WO2017183509A1

WO2017183509A1 - Bite block

Info

Publication number: WO2017183509A1
Application number: PCT/JP2017/014755
Authority: WO
Inventors: 利定鈴木; 宗裕鈴木; 鈴木　明; 総一郎御室; 哲朗木村
Original assignee: 国立大学法人浜松医科大学; ショーダテクトロン株式会社
Priority date: 2016-04-22
Filing date: 2017-04-11
Publication date: 2017-10-26
Also published as: JPWO2017183509A1; JP6996054B2

Abstract

Provided is a bite block that can be worn stably while preventing positional and directional displacements in the mouth. The bite block 100 is provided with an occlusion member 101 and an upper/lower interdental cover member 110. The upper/lower interdental cover member 110 is composed of an elastic material. The upper/lower interdental cover member 110 has a right-left interval which is wider than the interval of the right and left rows of teeth. Accordingly, the upper/lower interdental cover member 110 is able to press the respective inner surface sides of upper teeth UT and lower teeth LT of the wearer. The occlusion member 101 is provided with irregular-shaped movement regulating structure portions 103, 104 on a surface that receives the front teeth on at least one of the sides of the upper and lower front teeth so as to regulate movement in the mouth.

Description

Byte block

The present invention relates to a bite block that is placed between upper and lower teeth when undergoing surgery or examination with the mouth open, and prevents injuries in the mouth and damage to medical devices due to occlusion.

Conventionally, bite blocks have been used to prevent injuries in the mouth and damage to medical devices due to occlusion by being placed between the upper and lower teeth when undergoing surgery or examination with the mouth open. Yes. For example, Patent Literature 1 below discloses an example of a conventional oral medical device insertion guide (bite block). In this bite block, a lip pad piece protruding in a flange shape is provided at one end of a cylindrical sandwiched portion that is bitten by upper and lower front teeth. Also, a flange-like preventing collar that is smaller than the lip piece is provided at the other end of the sandwiched portion.

Japanese Patent Laid-Open No. 08-243074

However, in the bite block described in Patent Document 1, when the bite block tries to enter the throat side, there is a problem in that the lip pad is pressed against the lips, causing discomfort to the wearer. Further, in the escape preventing collar extending in a direction perpendicular to the end of the sandwiched part, only the left and right ends of the removal preventing collar are caught on the teeth, and there is a problem that the effect of preventing the withdrawal is low. In particular, during medical treatment such as treatment or surgery for a wearer of a bite block, the wearer may open his / her mouth consciously or unconsciously. In such a case, there is a problem that the position or orientation of the byte block may be shifted, and dropout is likely to occur.

The present invention has been made to cope with the above-described problems, and an object of the present invention is to provide a bite block that can be stably mounted while preventing a deviation in position and orientation in the mouth.

The feature of the invention described in the means (means 1) for solving the above-mentioned object is that the occlusion body is arranged between the upper and lower front teeth and extends from the inside of the mouth to the outside, and the upper part from the inner part of the mouth in the occlusion body. An upper and lower interdental cover body extending in a plate shape on each of the left and right inner teeth while facing the inner side surfaces of the teeth and lower teeth, and the upper and lower interdental cover bodies are elastic members. The distance between the left and right upper and lower interdental cover bodies is such that the upper and lower interdental cover bodies face each other so as to press the inner surfaces of the upper teeth and lower teeth of the wearer. The occlusal body is formed wider than the interval, and the occlusal body is provided with an uneven movement restricting structure portion that restricts movement in the mouth on a surface receiving the front tooth on at least one of the upper and lower front teeth. .

According to the feature of the present invention configured as described above, the upper and lower interdental cover bodies extending in a plate shape along the back teeth side on the inner side surfaces of the upper and lower teeth of the bite block wearer, Omission is prevented. At the same time, the uneven movement restricting structure provided on the surface of the occlusal body to which the front teeth are pressed restricts the bite block from entering the front teeth (inner side). Further, the left and right upper and lower interdental cover bodies are formed of an elastic member, and the distance between them is wider than the left and right distances between the upper and lower tooth rows in the wearer. For this reason, the upper and lower interdental cover body is pressed against each inner surface side of the upper and lower teeth of the wearer and elastically deforms. Then, the bite block is held on the inner surfaces of the upper teeth and the lower teeth by the reaction force of the elastic deformation acting on the upper and lower interdental cover body. From the above, it is possible to prevent the position and orientation in the mouth from being displaced and to stably attach the bite block.
Further, the feature of the invention described in another means (means 2) for achieving the above object is that it can be mounted in a state of being arranged between the upper front teeth and the lower front teeth, and can be placed inside the mouth at the time of mounting. An occlusal body having a rear end that is positioned, a front end that is located outside the mouth when mounted, an upper tooth receiving portion that receives the upper front teeth, and a lower tooth receiving portion that receives the lower front teeth, and a tension on the rear end side of the occlusal body And an upper and lower interdental cover body that is formed in a plate shape that is curved so that the rear side is a concave surface, and is disposed to face the inner teeth from the front teeth to the left and right back teeth when mounted. The upper and lower interdental cover bodies are made of an elastic member, and the distance between the left and right upper and lower interdental cover bodies is the same so as to press the inner surfaces of the upper and lower teeth of the wearer. Left and right dentition facing the upper and lower interdental cover Widely than the gap, the occlusion body, at least one of the upper tooth receiving portion and the lower tooth receiving unit is to comprise an uneven movement restricting structure that restricts the movement of the mouth.
According to the feature of the present invention configured as described above, it is provided so as to protrude on the rear end side of the occlusal body and is formed in a curved plate shape so that the rear side becomes a concave surface. The bite block is prevented from coming out to the outside of the mouth by the upper and lower interdental cover bodies arranged opposite to each other along the inner side surface of the back teeth. At the same time, the movement of the bite block to the front tooth side (inner side) is restricted by the uneven movement restricting structure provided on the upper and lower teeth receiving portions of the occlusal body to which the front teeth are pressed. Further, the left and right upper and lower interdental cover bodies are formed of an elastic member, and the distance between them is wider than the left and right distances between the upper and lower tooth rows in the wearer. For this reason, the upper and lower interdental cover body is pressed against each inner surface side of the upper and lower teeth of the wearer and elastically deforms. Then, the bite block is held on the inner surfaces of the upper teeth and the lower teeth by the reaction force of the elastic deformation acting on the upper and lower interdental cover body. From the above, it is possible to prevent the position and orientation in the mouth from being displaced and to stably attach the bite block.
In addition, the feature of the invention described in another means (means 3) for achieving the above object is that it can be mounted in a state of being arranged between the upper front teeth and the lower front teeth, and is placed inside the mouth at the time of mounting. An occlusal body having a rear end that is positioned, a front end that is located outside the mouth when mounted, an upper tooth receiving portion that receives the upper front tooth, and a lower tooth receiving portion that receives the lower front tooth, and extends to the rear end side of the occlusal body And an upper and lower interdental cover body that is formed in a curved plate shape having a concave rear side and is disposed to face the inner teeth from the front teeth to the left and right back teeth when mounted. The body is formed of an elastic member and is formed in a shape capable of pressing the inner surfaces of the upper and lower teeth of the wearer, and the occlusal body includes the upper tooth receiving portion and the lower tooth receiving portion. Restrict movement in the mouth to at least one of the In providing the uneven movement restricting structure that.
According to the feature of the present invention configured as described above, it is provided so as to protrude on the rear end side of the occlusal body and is formed in a curved plate shape so that the rear side becomes a concave surface. The bite block is prevented from coming out to the outside of the mouth by the upper and lower interdental cover bodies arranged opposite to each other along the inner side surface of the back teeth. At the same time, the movement of the bite block to the front tooth side (inner side) is restricted by the uneven movement restricting structure provided on the upper and lower teeth receiving portions of the occlusal body to which the front teeth are pressed. From the above, it is possible to prevent the position and orientation in the mouth from being displaced and to stably attach the bite block.

Further, another feature of the present invention is that, in the bite block, the movement restricting structure portion has a convex portion including an inclined surface inclined inward of the mouth.

According to another aspect of the present invention configured as described above, the bite block has a convex portion including an inclined surface in which the movement restricting structure portion is inclined toward the inner side of the mouthpiece. The bite block can be restricted from moving toward the front teeth (inner side) even if it is bitten at any position. Therefore, the mounting stability of the bite block can be improved.

Another feature of the present invention is that, in the bite block, the movement restricting structure has a groove-like recess into which a front end of each front tooth can be inserted.

According to another feature of the present invention configured as described above, the bite block has a groove-like recess having a width and a depth into which the front end portion of the front tooth can be inserted into the bite block. A shift in the position or orientation of the block can be prevented more reliably.

According to another aspect of the present invention, in the bite block, the occlusal body includes an upper tooth movement restricting structure portion having a convex portion including an inclined surface inclined to the inner side of the mouth on a surface receiving the upper front tooth, And a lower tooth movement restricting structure portion having a groove-like recess into which the front end portion of each front tooth can be inserted on a surface for receiving the lower front tooth.

According to another feature of the present invention configured as described above, the bite block includes a movement restricting structure portion for the upper teeth on the surface for receiving the upper front teeth in the occlusal body, and the lower teeth on the surface for receiving the lower front teeth. The movement regulation structure part for is provided. For this reason, the front teeth of the upper jaw that become the fixed side when the mouth is opened and closed can be secured by the upper teeth movement restricting structure. Further, the front teeth on the lower jaw side, which becomes the movable side when the mouth is opened and closed, can be fixedly held by the lower tooth movement restricting structure portion having a groove-like recess.

Further, another feature of the present invention is that, in the bite block, a plurality of the groove-like recesses are formed so as to be aligned in the front-rear direction in which the occlusal body extends.

According to another feature of the present invention configured as described above, since the bite block is formed in a plurality so that the groove-like recesses are arranged in the front-rear direction in which the occlusal body extends, the lower jaw with respect to the front teeth of the upper jaw having individual differences Depending on the position of the front teeth, any one of a plurality of groove-shaped recesses can be selected. Therefore, the mounting stability of the bite block can be improved. At the same time, the inclination angle in the front-rear direction of the bite block at the time of wearing can be adjusted by a groove-like recess into which the front teeth of the lower jaw are inserted.

Further, another feature of the present invention is that, in the bite block, the movement restricting structure portion has a concave portion formed in a curved shape curved along a dentition.

According to another feature of the present invention configured as described above, the bite block has a concave portion formed in a curved shape in which the movement restricting structure portion is curved along the dentition. Can increase the sex.

Further, another feature of the present invention is that in the bite block, the occlusal body is formed wider on the outer side of the mouth than on the inner side of the mouth.

According to another feature of the present invention configured as described above, since the bite block is formed so that the outside of the mouth is wider than the inside of the mouth, the occlusal area of the upper and lower front teeth can be increased. It is possible to reduce the burden on the teeth and make it easier to bite.
Another feature of the present invention is that in the bite block, the upper and lower interdental cover body includes an upper front region in contact with the upper tooth receiving portion and a lower front region in contact with the lower tooth receiving portion. And a rear region protruding rearward from these regions, and in the occlusal body, the shortest distance from the front end to the upper front region is 25 mm or more. If the size of the occlusal body in the front-rear direction is short, the bite block is hidden by the lip when the bite block is placed in the oral cavity, so that there is no allowance when it is desired to fix the bite block with a medical tape or the like. In that respect, according to another feature of the present invention configured as described above, since the shortest distance from the front end to the upper front region in the occlusion body is 25 mm or more, the distal end side of the occlusion body is placed at the time of indwelling in the oral cavity. The length of the tape can be wound up (for example, 10 mm or more), and it can be always exposed from the lips.
Another feature of the present invention is that the bite block is made of a transparent material. According to another feature of the present invention configured as described above, the occlusal body and the upper and lower interdental cover body constituting the bite block become transparent, so that the tongue contacting the occlusal body and the upper and lower interdental cover body when placed in the oral cavity. And the condition of the oral mucosa can be easily observed. This makes it easy to manage intraoperative incidents such as congestion and pressure ulcers.
Another feature of the present invention is that, in the bite block, a groove portion extending from the front end side to the rear end side is formed at a central portion in the left-right direction when the bite body is viewed from the front end side. There is to be. If the occlusal body becomes wider in the left-right direction, most of the mouth opening is blocked, so that a medical device such as a saliva suction pipe cannot be used. In addition to this, there is a problem that a large bite block is difficult to insert into the oral cavity as compared with the conventional product. In that respect, according to another feature of the present invention configured as described above, since the groove portion extending from the front end side to the rear end side is formed in the central portion of the occlusal body, even when the bite block is placed in the oral cavity. Medical devices can be inserted into the oral cavity. In addition, since the occlusal body can be compressed and deformed by pressing from both the left and right sides, the bite block can be easily inserted into the oral cavity.
Another feature of the present invention is that, in the bite block, a groove portion extending from the front end side to the rear end side is formed in a central portion in the left-right direction when the bite body is viewed from the front end side. The bottom of the groove is cut away at a position on the front end side of the occlusal body. According to another feature of the present invention configured as described above, if there is a notched portion at the above position in the bottom of the groove, the degree of freedom that allows the medical device inserted into the groove to be pulled out in the vertical direction The degree can be secured.
Another feature of the present invention is that, in the bite block, the inclined surface of the convex portion is further inclined toward the center side of the occlusal body. According to the other feature of the present invention configured as described above, not only the movement of the bite block in the front-rear direction but also the movement in the left-right direction can be restricted. Therefore, the bite block is less likely to be displaced in the front-rear direction and the left-right direction, and the mounting stability can be further improved.
Another feature of the present invention is that in the bite block, the occlusal body has a cross-sectional shape in which the dimension in the left-right direction is larger than the dimension in the vertical direction, and the front end side of the occlusal body is The reason is that the corners are rounded. According to another feature of the present invention configured as described above, since the cross-sectional shape is larger in the horizontal direction than in the vertical direction, the occlusal area of the upper and lower front teeth can be increased. It is possible to ease the bite by reducing the burden. Further, since the front end side corner of the occlusal body is formed to be rounded, there is no possibility of irritating or damaging the lip or the inner surface of the oral cavity even when placed in the oral cavity.
Another feature of the present invention is that in the bite block, the occlusal body is made of an elastic member, and the vertical dimension of the occlusal body is in a cross section perpendicular to the longitudinal direction of the medical device inserted into the groove. It is larger than the maximum dimension. A conventional bite block is made of a hard resin material and has a simple and long block shape. With such a shape, the medical device is protected when it is strongly occluded, while the tooth that is in strong occlusal contact may be damaged. In this respect, according to another feature of the present invention configured as described above, the occlusal body is made of a flexible elastic member, so that damage to the tooth can be avoided by elastically compressing and deforming even if the bite is strongly bitten. . In addition, since the vertical dimension of the occlusal body is larger than the maximum dimension in the cross section of the medical device, the medical device may be damaged even if the occlusal body is compressed in the vertical direction during occlusion. Disappear.
Another feature of the present invention is that in the bite block, the upper and lower interdental cover body includes an upper front region in contact with the upper tooth receiving portion and a lower front region in contact with the lower tooth receiving portion. And a rear region protruding rearward from these regions, the rear region having an upper corner portion, a lower corner portion, and a central portion located therebetween, and the central portion of the rear region Has a conductive notch. At the time of surgery, a medical device such as a tracheal tube may be simultaneously present in the oral cavity. Since the upper and lower interdental cover body is placed so as to surround the entire inner surface of the oral dentition, a means for guiding the tracheal tube from the pharynx to the outside of the oral cavity is required. In that respect, according to another feature of the present invention configured as described above, since the conduction notch is formed in the center of the rear region of the upper and lower interdental cover body, the tracheal tube is provided via the conduction notch. Can be conducted outside the oral cavity.
Another feature of the present invention is that in the bite block, the upper and lower interdental cover body includes an upper front region in contact with the upper tooth receiving portion and a lower front region in contact with the lower tooth receiving portion. And a rear region protruding rearward from these regions, the rear region has an upper corner portion and a lower corner portion, and the upper corner portion and the lower corner portion have rounded corners. The peripheral edge of the upper and lower interdental cover body is formed to have a round cross-sectional shape. The upper and lower interdental cover body contacts the oral mucosa, but if the contact portion has a corner, pressure ulcers and the like may occur due to stimulation caused by contact when used for a long time. In this respect, according to another feature of the present invention thus configured, the upper corner portion and the lower corner portion are formed to have rounded corners, and the peripheral portion of the upper and lower interdental cover body is rounded. Since it is formed to have a cross-sectional shape, there is little contact irritation to the oral mucosa, and the occurrence of pressure ulcers and the like can be suppressed even when used for a long time.
Another feature of the present invention is that in the bite block, the upper and lower interdental cover body includes an upper front region in contact with the upper tooth receiving portion and a lower front region in contact with the lower tooth receiving portion. And a rear region protruding rearward from these regions, and a gap is formed in the center of the lower front region to divide the lower front region into left and right. . The upper and lower interdental cover body contacts the oral dentition or the upper and lower gums. Therefore, there is a possibility that the salivary glands existing in the sublingual or other oral cavity may be unnecessarily stimulated, which may cause an increase in the amylase level after the operation. Amylase is also used as a monitor for postoperative evaluation of related organs, but the increase in amylase value due to the use of bite block hinders accurate postoperative evaluation. In this regard, according to another feature of the present invention thus configured, there is a gap in the center of the lower front region of the upper and lower interdental cover body, so that contact and irritation to the sublingual salivary glands are avoided. And an increase in amylase level during surgery can be avoided.
Another feature of the present invention is that in the bite block, the upper and lower interdental cover body includes an upper front region in contact with the upper tooth receiving portion and a lower front region in contact with the lower tooth receiving portion. And a rear region projecting rearward from these regions, and the position of the lower front region is shifted from the position of the upper front region to the rear end side. is there. In the bite block, the contact between the upper and lower interdental cover bodies in the vicinity of the front teeth is not considered in the longitudinal direction between the front teeth of the upper jaw and the front teeth of the lower jaw, and sufficient stability is ensured when worn. Cannot be improved. In that respect, according to another feature of the present invention configured as described above, the position of the lower front region in the upper and lower interdental cover body is shifted from the position of the upper front region to the rear end side. Therefore, the stability at the time of wearing can be improved sufficiently.

It is a front perspective view showing the outline of the appearance composition of the bite block concerning one embodiment of the present invention. It is a back perspective view which shows the outline of the external appearance structure of the bite block shown in FIG. It is a front perspective view which shows the outline of the external appearance structure of the bite block shown in FIG. 1 in the attitude | position which orient | assigned the lower tooth receiving part side upwards. It is a front view which shows the outline of the external appearance structure of the bite block shown in FIG. It is a top view which shows the outline of the external appearance structure of the byte block shown in FIG. It is a right view which shows the outline of the external appearance structure of the bite block shown in FIG. It is a rear view which shows the outline of the external appearance structure of the bite block shown in FIG. It is a bottom view which shows the outline of the external appearance structure of the bite block shown in FIG. FIG. 9 is a cross-sectional view of the bite block as seen from line 9-9 in FIG. FIG. 7 is a right side view showing a state where the wearer bites and wears the bite block shown in FIG. 6. It is the top view which looked at the state which mounted | wore the wearer's mouth with the bite block shown in FIG. 1 from the upper teeth. It is the top view which looked at the state which equipped the bite block shown in Drawing 1 in a wearer's mouth from the upper part of a lower tooth. It is the rear view which showed the elastic deformation state which crushed the occlusion body in the bite block shown in FIG. 7 from the left-right direction. It is a front perspective view which shows the outline of the external appearance structure of the bite block which concerns on the modification of this invention. FIG. 9 is a cross-sectional view of a bite block as seen from the 9-9 line in FIG. 5 of the outline configuration of the bite block according to a modification of the present invention. It is a front perspective view of the upper surface side which shows the outline of the external appearance structure of the bite block which concerns on the modification of this invention. It is a front perspective view which shows the outline of the external appearance structure of the bite block which concerns on the modification of this invention in the attitude | position which orient | assigned the lower tooth receiving part side upwards. It is a front perspective view of the bottom side shown. It is a bottom view which shows the outline of the external appearance structure of the bite block which concerns on the modification of this invention.

Hereinafter, an embodiment of a byte block according to the present invention will be described with reference to the drawings. FIG. 1 is a front perspective view showing an outline of an external configuration of a bite block 100 according to the present invention. FIG. 2 is a rear perspective view schematically showing the external configuration of the bite block 100 shown in FIG. FIG. 3 is a front perspective view showing an outline of the external configuration of the bite block shown in FIG. 1 in a posture in which the lower tooth receiving portion side is directed upward. FIG. 4 is a front view showing an outline of the external configuration of the bite block 100 shown in FIG. FIG. 5 is a plan view showing the outline of the external configuration of the bite block 100 shown in FIG. FIG. 6 is a right side view showing the outline of the external configuration of the bite block 100 shown in FIG. FIG. 7 is a rear view schematically showing the external configuration of the byte block 100 shown in FIG. FIG. 8 is a bottom view schematically showing the external configuration of the bite block 100 shown in FIG. FIG. 9 is a cross-sectional view of the bite block 100 taken along line 9-9 of FIG. FIG. 10 is a right side view showing a state in which the wearer bites and wears the bite block 100 shown in FIG.

In the drawings referred to in the present specification, the curved surface portion is appropriately represented by a diagram in order to clarify the shape of the round portion of the bite block 100. The bite block 100 is provided between the upper teeth UT and lower teeth LT of a wearer (not shown) when performing diagnosis, treatment or surgery (hereinafter referred to as “treatment”) with the mouth open. It is an instrument placed in the. The bite block 100 serves to prevent injuries in the mouth due to occlusion and damage to the medical device while allowing insertion of the medical device.

(Configuration of byte block 100)
The bite block 100 includes an occlusal body 101. The occlusal body 101 is a portion that is disposed between the front teeth of the upper jaw and the front teeth of the lower jaw in the mouth of the wearer wearing the bite block 100 and receives the occlusion of the upper teeth UT and the lower teeth LT. It is formed in a rod shape extending to In the present embodiment, the end located on the inside of the mouth at the time of mounting in the occlusal body 101 is referred to as a rear end 101e, and the end positioned on the outside of the mouth at the time of mounting is referred to as a front end 101d. More specifically, the occlusal body 101 includes an upper tooth receiving portion 101a and a lower tooth receiving portion 101b formed to face the upper and lower front teeth of the wearer. The occlusal body 101 is formed in a solid block shape in which an upper tooth receiving portion 101a and a lower tooth receiving portion 101b are connected via two side portions 101c, a front end 101d, and an upper and lower interdental cover body 110, respectively.

In this case, the occlusal body 101 is made of a colorless and transparent synthetic resin material that is elastically deformed by the bite force of the wearer. In this case, as the elastic member, various elastomers such as thermosetting elastomers (for example, silicone materials, rubber materials) and thermoplastic elastomers (for example, styrene resins, olefin resins, vinyl chloride resins, urethane resins, amides). Resin) can be used alone or in appropriate combination. In addition, a wearer's front tooth is comprised including at least 1 sort (s) of a middle incisor, a side incisor, and a canine tooth. Here, the occlusal body 101 is preferably made of a colorless and transparent synthetic resin material, but may be made of a translucent synthetic resin material, for example.

The upper tooth receiving portion 101a is a planar portion that receives the front teeth of the upper jaw of the wearer, and is formed with a penetration portion (groove portion 102) and a movement restricting structure portion 103 for upper teeth. The groove portion 102 is a portion through which a medical instrument (for example, a tracheal tube or an endoscope for artificial respiration) inserted into the body from the wearer's mouth when performing treatment or the like of the wearer is inserted. At the same time, it is a part for facilitating bending deformation of the bite block 100. In this case, the groove part 102 is formed in the width | variety and depth which can penetrate the medical device inserted in a body.

The groove 102 is disposed at the center of the lateral width direction (left and right direction of the wearer's mouth) when the occlusal body 101 is viewed from the front end 101d side, and from the front end 101d side to the rear end 101e side of the occlusal body 101 (In the direction of the inside and outside of the wearer's mouth). Thereby, the upper tooth receiving part 101a is formed in two rows in a state where it is divided on both sides of the groove part 102. The bottom of the groove 102 is formed in a U-shaped curved surface.

The upper tooth movement restricting structure 103 is formed in an uneven shape in order to prevent the position and orientation of the front teeth of the upper jaw from deviating from the upper tooth receiving part 101a (that is, restricting movement in the mouth). Part. More specifically, the upper-tooth movement restricting structure 103 includes a bottom (groove-shaped recess) 103a, a convex portion 103b as a front inclined portion, and a convex portion 103c as a rear inclined portion. ing.

The bottom portion 103a is the lowest portion on the upper teeth movement restricting structure portion 103, and is formed as a substantially U-shaped concave portion in plan view along the dentition of the upper front teeth. The bottom portion 103a is linearly formed between the convex portion 103b as a front inclined portion and the convex portion 103c as a rear inclined portion formed in front of an upper and lower interdental cover body 110 described later. Thus, the tip of each front tooth has a shape that can be inserted. The convex portion 103b on the front side is configured to include an upward inclined surface (that is, an inclined surface inclined inward of the mouth) from the bottom 103a toward the tip of the upper tooth receiving portion 101a. In the present embodiment, the inclination angle α of the inclined surface of the convex portion 103b at the front is set to 5 ° with respect to the horizontal direction on the groove portion 102 side, and is set to 10 ° with respect to the horizontal direction on the side portion 101c side. It is set (see FIG. 5). In other words, the inclined surface of the convex portion 103b on the front side is also an upward inclined surface from the center portion of the occlusal body 101 to both side portions 101c. In other words, the inclined surface of the convex portion 103 b at the front is also inclined toward the center side of the occlusal body 101.

Further, as shown in FIG. 6 when the bite block 100 is viewed from the right side surface, the horizontal length with reference to the bottom 103a of the convex portion 103b on the front (hereinafter simply referred to as “the length of the convex portion 103b”). Is longer than the length in the horizontal direction of the convex portion 103c at the rear with respect to the bottom 103a (hereinafter simply referred to as “the length of the convex portion 103c”). In this case, the length of the convex portion 103b is preferably 10 times or more and 50 times or less the length of the convex portion 103c. The rear convex portion 103c is configured to include an upward inclined surface (that is, an inclined surface inclined outward) from the bottom portion 103a toward the upper and lower interdental cover body 110 of the upper tooth receiving portion 101a. In the present embodiment, the inclination angle β of the convex portion 103c at the rear is set to be 35 ° with respect to the horizontal direction (see FIG. 5).

The lower tooth receiving portion 101b is a planar portion that receives the front teeth of the lower jaw of the wearer, and a movement restricting structure portion 104 for the lower teeth is formed. More specifically, the lower-tooth movement restricting structure portion 104 includes a plurality of bottom portions (groove-like concave portions) 104a and convex portions 104b.

The groove-shaped concave portion 104a is the lowest portion of the lower tooth movement restricting structure portion 104, and as shown in FIG. 7, has a curved shape that is parabolically curved in plan view along the dentition of the lower jaw front teeth. Is formed. In this case, the groove-like recess 104a is formed to have a depth and a width into which the tip of the anterior tooth of the lower jaw is inserted. In the present embodiment, the groove-like recess 104a has a depth from the upper surface of the protrusion 104b set to 1.5 mm, and a width between the adjacent protrusions 104b set to 1.5 mm. A plurality of the groove-like recesses 104 a are formed so as to be arranged at equal intervals along the front-rear direction in which the occlusal body 101 extends. The plurality of groove-like recesses 104a gradually increase in curvature from the front end 101d side of the occlusal body 101 toward the rear end 101e side.

The convex portion 104b is a portion protruding from the groove-shaped concave portion 104a, and is formed to be parabolically curved in plan view along the dentition of the lower jaw front teeth. As for the plurality of convex portions 104b, the curvature gradually increases from the front end 101d side to the rear end 101e side of the occlusal body 101, similarly to the plurality of groove-shaped concave portions 104a. In addition, the width of the convex portion 104b is the same as that of the groove-shaped concave portion 104a in the present embodiment. In addition, the movement restricting structure 104 for lower teeth in the present embodiment is composed of seven convex portions 104b and six groove-shaped concave portions 104a, thereby forming an uneven portion. The plurality of groove-like recesses 104a may not be parabolic, and may be, for example, an arc shape or an elliptical arc shape.

The two side portions 101c are portions constituting the left and right side surfaces of the occlusal body 101, and are constituted by planes extending in the vertical direction. Each boundary portion between each side portion 101c and the upper tooth receiving portion 101a and the lower tooth receiving portion 101b is formed in a curved shape with rounded corners. In this case, in this embodiment, the curvature of the boundary part between each side part 101c and the lower tooth receiving part 101b is made larger than the curvature of the boundary part between each side part 101c and the upper tooth receiving part 101a, and the wearing The lower lip of the person is soft. Note that the front end 101d side of the occlusal body 101 is also formed to have rounded corners.

The front end 101d of the occlusal body 101 is a tip portion that always protrudes from the outside of the wearer's mouth in the occlusion body 101 when the bite block 100 is worn in the wearer's mouth, and is configured by a plane extending in the vertical direction. . In other words, the occlusal body 101 is formed in such a length that the front end 101d always protrudes from the outside of the wearer's mouth. The groove 102 is formed with the front end 101d as a starting end and the rear end 101e on the opposite side of the front end 101d as a termination.

The occlusal body 101 is formed in a length that is exposed from the inside of the mouth to the outside of the mouth while being disposed between the upper and lower front teeth of the wearer. Further, the occlusal body 101 is formed to a thickness that does not cut even when deformed by being bitten by the upper and lower front teeth, and the medical device disposed in the groove 102 is damaged or functioned. It is formed to a thickness that does not cause deformation that leads to a decrease. In the present embodiment, the shortest distance from the front end 101d of the occlusal body 101 to the upper front region R1 (described later) is set to 25 mm or more, and specifically set to about 30 mm. In the present embodiment, the upper and lower thicknesses (vertical dimension) of the occlusal body 101 are set to be larger than the maximum dimension in the cross section perpendicular to the longitudinal direction of the medical device to be inserted, specifically about 18 mm. Is set to

Further, in the present embodiment, the width of the occlusal body 101 is formed to a length corresponding to the left and right first premolars of the wearer. In this case, in this embodiment, the lateral width of the occlusal body 101 is formed so as to increase from the upper and lower interdental cover body 110 side (that is, the rear end 101e side) toward the front end 101d side. Specifically, the lateral width of the occlusal body 101 is 40 mm on the rear end 101 e side and 45 mm on the front end 101 d side, and continuously widens from the upper and lower interdental cover body 110 side to the front end 101 d side. It is formed to become. Of course, the dimensions of each part of the occlusal body 101 are appropriately determined according to the specifications of the bite block 100.

The upper and lower interdental cover body 110 is a part for fixing the occlusal body 101 in the wearer's mouth and preventing the wearer's tongue from entering between the upper teeth UT and the lower teeth LT. . The upper and lower interdental cover body 110 is formed in a plate shape that extends from the left and right portions at the end of the occlusal body 101, in other words, from both sides of the opening of the groove 102. It can also be understood that the upper and lower interdental cover body 110 is provided so as to project on the rear end 101e side of the occlusal body 101. It can also be understood that the upper and lower interdental cover body 110 is curved so that the rear side is concave.

More specifically, as shown in FIGS. 11 and 12, the pair of left and right upper and lower interdental cover bodies 110 are arranged so that when the occlusal body 101 is disposed between the upper and lower front teeth of the wearer, Each of the left and right upper teeth UT and the lower teeth LT has a length that reaches each of the left and right back teeth, and is formed into a curved shape that is convex. In this case, the left and right upper and lower interdental cover bodies 110 are formed in a shape that can cover the inner surfaces of the wearer's upper teeth UT and lower teeth LT when the wearer bites the occlusal body 101. ing. The upper and lower interdental cover body 110 includes an upper front region R1 in contact with the upper tooth receiving portion 101a, a lower front region R2 in contact with the lower tooth receiving portion 101b, and a rear portion protruding rearward from these regions. Region R3.

Also, in the upper and lower interdental cover body 110, the position of the lower front region R2 is shifted from the position of the upper front region R1 to the rear end 101e side (that is, the mouth inner side). The amount of shift depends on the person, but is set to about 3 mm to 5 mm (about 10 mm at the maximum). 10 to 12, the upper teeth UT, lower teeth LT, and their gums of the wearer are indicated by two-dot chain lines.

Further, the left and right upper and lower interdental cover bodies 110 are formed so that the interval between them is wider than the left and right intervals of the upper and lower dental rows in the wearer. In this case, the interval between the left and right upper and lower interdental cover bodies 110 may be set for each individual wearer who wears this bite block 100, but the average human (even for each gender or age). It may be set based on the interval between the left and right sides of the dentition. Further, the interval between the left and right upper and lower interdental cover bodies 110 may be formed wider than the left and right intervals of the dentition of the wearer over the entire length, or part of the wearer between the same length. You may make it form wider than the space | interval of the left and right of a dentition. In the present embodiment, the left and right upper and lower interdental cover body 110 is formed with a length in which each tip reaches the second left and right second molars, and the distance between the left and right tips is the first left and right first molars. The interval is set to be approximately the same as the interval.

These upper and lower interdental cover bodies 110 are made of a material such as a colorless and transparent synthetic resin material (for example, silicone material) or a rubber material that can be easily elastically deformed by a human finger. In this case, the hardness of the upper and lower interdental cover body 110 can be configured so as to be easily elastically deformable even by the force of the human tongue, but cannot be easily elastically deformed by the force of the human tongue. A degree of hardness is preferred. Further, the thickness of the upper and lower interdental cover body 110 is also set within a range where elastic deformation is possible. In the present embodiment, the upper and lower interdental cover body 110 is configured with a uniform thickness of 2 mm.

In the center of the lower front region R2 in the upper and lower interdental cover body 110, a gap 111 that divides the lower front region R2 left and right is cut out. The gap 111 is a portion for facilitating bending of the occlusal body 101 and the upper and lower interdental cover body 110, and is formed in a U shape or a V shape on the opposite side to the groove portion 102. Further, the presence of the gap 111 prevents the lower front region R2 from contacting and stimulating the sublingual salivary gland. The two rear regions R3 in the upper and lower interdental cover body 110 each have an upper corner portion R31, a lower corner portion R32, and a central portion R33 located between them, and the central portion R33 has a conduction cutout portion 112. Are formed. The conduction notch portion 112 is formed in a substantially U shape so that each rear region R3 can be easily bent and a medical device such as a tracheal tube can be easily conducted outside the oral cavity when performing treatment of the wearer. ing. The conduction cutout 112 may be formed only in one of the two rear regions R3, and may be omitted when it is not necessary (for example, when it is not necessary to insert a medical instrument). You can also. Further, the upper corner portion R31 and the lower corner portion R32 of the upper and lower interdental cover body 110 are formed so that the corners are rounded so as to reduce contact stimulation to the oral mucosa. Further, the peripheral edge portion of the upper and lower interdental cover body 110 is formed to have a round cross-sectional shape over the entire circumference, that is, a cross-sectional shape having no edge.

(Operation of byte block 100)
Next, the operation of the byte block 100 configured as described above will be described. An operator who wears the bite block 100 with respect to the wearer (for example, a doctor or a person who assists the doctor's work) prepares the bite block 100 and then wears the bite block 100 in the mouth of the wearer. In this case, when it is necessary for the worker to wear a medical instrument in the body from the mouth of the wearer, the worker wears the bite block 100 after wearing the medical instrument on the wearer.

Specifically, the operator inserts the occlusal body 101 and the upper and lower interdental cover body 110 in the bite block 100 into the wearer's mouth. In this case, as shown by the broken-line arrows in FIG. 13, the operator presses the occlusal body 101 from the left and right directions to crush the groove portion 102 from both sides and bring the left and right upper and lower interdental cover bodies 110 close to each other. As a result, the bite block 100 can be easily inserted into the mouth.

Next, the operator brings the outer surfaces of the left and right upper and lower interdental cover bodies 110 into contact with the inner surfaces of the wearer's upper teeth UT and lower teeth LT. Specifically, the operator holds the occlusal body 101 in the bite block 100 and pulls it toward the outside of the mouth. Then, each outer surface of the upper and lower interdental cover body 110 can be brought into contact with each inner surface of the wearer's upper teeth UT and lower teeth LT (see FIGS. 11 and 12).

Further, the operator places the upper teeth movement restricting structure 103 in the occlusal body 101 on the upper teeth on the wearer's upper jaw side, then closes the lower jaw on the wearer and lowers the lower teeth on the lower teeth. It goes to the groove-like recess 104a of the tooth movement restricting structure 104. In this case, the operator can place the front teeth of the upper jaw of the wearer at any position of the upper teeth movement restricting structure 103, but it is desirable to place them on the bottom 103a. In this case, the operator selects one of the plurality of groove-shaped recesses 104a according to the position of the front teeth on the lower jaw side of the wearer and the posture of the bite block 100 to be worn.

Thus, the bite block 100 has the upper front teeth of the wearer positioned at the bottom 103a of the upper teeth movement restricting structure 103 of the occlusal body 101, and the lower jaw front teeth of the occlusal body 101 restricting movement of lower teeth. It will be in the state located in the groove-shaped recessed part 104a in the structure part 104 (refer FIG. 9). At this time, the outer surfaces of the upper and lower interdental cover body 110 are pressed against the inner surfaces of the upper teeth UT and lower teeth LT of the wearer, and are elastically deformed inward, respectively. Close contact with the inner surface.

In this case, the inner direction of each inner surface of the upper teeth UT and the lower teeth LT in which the upper and lower interdental cover body 110 is elastically deformed is a direction from the left-right direction of the dentition toward the center of the mouth, and a diagonally upper left and right of the dentition There is a direction from the diagonally downward to the central part of the mouth, and a direction from the diagonally lower left and right of the dentition to the central part of the mouth that is diagonally upward. That is, the bite block 100 is held in the wearer's mouth by the pressing force that the left and right upper and lower interdental cover bodies 110 press the inner surfaces of the wearer's upper teeth UT and lower teeth LT, respectively.

In this case, the operator can adjust the force with which the upper and lower interdental cover body 110 is held in the mouth in the depth direction in the mouth. That is, the operator can increase the amount of elastic deformation of the upper and lower interdental cover body 110 by positioning the upper and lower interdental cover body 110 on the front tooth side. At the same time, the contact areas of the upper teeth UT and the lower teeth LT with the respective inner surfaces are increased, and the holding force in the mouth of the upper and lower interdental cover body 110 can be increased.

Meanwhile, the operator can reduce the amount of elastic deformation of the upper and lower interdental cover body 110 by positioning the upper and lower interdental cover body 110 on the back tooth side. At the same time, the contact area of the upper teeth UT and the lower teeth LT with the inner surfaces can be reduced, and the holding force in the mouth of the upper and lower interdental cover body 110 can be reduced. In these cases, the contact positions of the upper and lower front teeth in the upper tooth movement restricting structure portion 103 and the lower tooth movement restricting structure portion 104 are the movement restricting portions on the upper tooth movement restricting structure portion 103 and lower teeth. It adjusts suitably on the structure part 104. FIG.

Next, when a medical instrument is inserted into the wearer's mouth, the operator pulls out the medical instrument to the outside of the mouth through the groove 102 in the bite block 100 or through the conduction notch 112. And pull it outward. In this case, the operator can also fix the medical device discharged from the wearer's mouth to the occlusal body 101 using a tape or a rubber band. Thereby, the worker can wear the bite block 100 in the wearer's mouth.

Thus, the bite block 100 mounted in the wearer's mouth prevents the wearer from biting. Specifically, in the bite block 100, the occlusal body 101 disposed between the upper and lower front teeth of the wearer prevents the upper teeth UT and the lower teeth LT from biting. In this case, the front teeth of the upper jaw come into contact with the convex portion 103b of the upper tooth movement restricting structure portion 103, and the convex portion 104b of the lower tooth movement restricting structure portion 104 (the convex portion 104b located on the front side with respect to the front tooth). When the front teeth of the lower jaw come into contact with each other, displacement of the bite block 100 toward the inside of the mouth is prevented.

Also, since the left and right upper and lower interdental cover bodies 110 are in contact with the inner surfaces of the upper teeth UT and the lower teeth LT, positional deviation of the bite block 100 toward the outer side of the bite block 100 is prevented. In this case, the front teeth of the upper jaw come into contact with the convex portion 103c of the upper tooth movement restricting structure portion 103, and the convex portion 104b of the lower tooth movement restricting structure portion 104 (the convex portion 104b located on the rear side with respect to the front tooth). ), The position of the bite block 100 toward the outside of the mouth is prevented.

Further, in the bite block 100, since the left and right upper and lower interdental cover bodies 110 cover the inner surfaces of the upper teeth UT and the lower teeth LT, the wearer's tongue is located between the upper teeth UT and the lower teeth LT. Can be prevented from being located. Moreover, since the bite block 100 has the occlusal body 101 formed in a substantially square shape when viewed from the front, it can be prevented from rotating in the mouth and maintain its posture.

Next, when removing the bite block 100 from the mouth, the operator can hold the bite block 100 in the bite block 100 with the mouth of the wearer open and pull the bite block 100 toward the outside of the mouth. . In this case, as in the case of the insertion, the operator presses the occlusal body 101 from the left and right directions to crush the groove 102 from both sides so that the left and right upper and lower interdental cover bodies 110 are brought close to each other. Then, the bite block 100 can be easily taken out from the mouth (see FIG. 13).

As can be understood from the above operation description, according to the above embodiment, the mouth of the bite block 100 is provided by the upper and lower interdental cover body 110 extending in a plate shape along the back tooth side on the inner surface of the upper and lower teeth of the wearer. Falling out is prevented. At the same time, the concave and convex

movement restricting structures

103 and 104 provided in the upper tooth receiving portion 101a and the lower tooth receiving portion 101b of the occlusion body 101 to which the front teeth are pressed are moved toward the front teeth side (inner side) of the bite block 100. Ingress is regulated. Further, the left and right upper and lower interdental cover bodies 110 are formed of an elastic member, and the distance between them is wider than the left and right distances between the upper and lower dental rows in the wearer. For this reason, the upper and lower interdental cover body 110 is pressed against each inner surface side of the upper tooth UT and the lower tooth LT of the wearer and elastically deforms. Then, the bite block 100 is held on the inner surfaces of the upper teeth UT and the lower teeth LT by a reaction force of elastic deformation acting on the upper and lower interdental cover body 110. As described above, the position and orientation in the mouth can be prevented from being displaced stably.

Furthermore, the implementation of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the object of the present invention. In the following modifications, the same reference numerals are given to the same components as those in the above embodiment, and the description thereof is omitted.

For example, in the bite block 100 of the above-described embodiment, the upper tooth movement restricting structure portion 103 and the lower tooth movement restricting structure portion 104 are respectively provided on the upper tooth receiving portion 101a and the lower tooth receiving portion 101b of the occlusal body 101, respectively. It was formed so as to prevent displacement of the position and orientation of the upper teeth UT and the lower teeth LT. However, the concavo-convex movement restricting structure may be formed on at least one of the upper tooth UT side and the lower tooth LT side of the occlusal body 101.

Further, in the above embodiment, the upper tooth movement restricting structure portion 103 is constituted by the two

convex portions

103b and 103c and the bottom portion 103a, and the lower tooth movement restricting structure portion 104 is formed by a plurality of groove-like recessed portions 104a. And a plurality of convex portions 104b. However, the movement restricting structure 103 for the upper teeth and the movement restricting structure 104 for the lower teeth prevent at least the position or orientation of the upper teeth UT or the lower teeth LT from deviating and the position and orientation of the bite block 100 from deviating. Is not necessarily limited to the structure as in the above embodiment.

Therefore, the movement restricting structure portion 103 for the upper teeth may be formed only by the convex portion 103b at the front, for example. In this case, the movement restricting structure portion 103 for the upper teeth may include two inclined surfaces that are inclined in the two directions of the front-rear direction and the lateral width direction as in the above-described embodiment. You may comprise including only one inclined surface which becomes an upward inclination from the inner side of a mouth toward the outer side of a mouth.

Further, as shown in FIG. 14, for example, the upper-tooth movement restricting structure 103 has a structure composed of a plurality of groove-like recesses and a plurality of protrusions like the lower-tooth move restricting structure 104. You can also. In this case, the lower tooth receiving portion 101b may be formed with a convex portion having a downward inclined surface (that is, an inclined surface inclined inward of the mouth) toward the tip portion of the lower tooth receiving portion 101b. The part may not be formed. Furthermore, the upper-tooth movement restricting structure 103 can be configured, for example, by arranging a plurality of protrusions 103b in the front-rear direction of the occlusal body 101 as shown in FIG. Each of the convex portions 103b has an upward inclined surface (that is, an inclined surface inclined inward of the mouth) toward the tip of the upper tooth receiving portion 101a.

Further, the lower-tooth movement restricting structure 104 may be composed of, for example, only one groove-shaped recess 104a and two protrusions 104b, or like the upper-tooth move restricting structure 103. It can also be composed of one or a plurality of convex portions having an inclined surface. Further, the upper tooth movement restricting structure portion 103 and the lower tooth movement restricting structure portion 104 may be formed in a dimple shape having a large number of irregularities, for example. In other words, the upper tooth movement restricting structure portion 103 and the lower tooth movement restricting structure portion 104 may not include a linear structure. Further, the upper tooth movement restriction structure portion 103 and the lower tooth movement restriction structure portion 104 are configured by curved curves such as parabolas along the upper and lower front teeth, but are straight lines extending in the left-right direction of the wearer. It can also be formed into a shape.

Further, in the above embodiment, the occlusal body 101 is formed in a shape in which the width continuously increases from the inside of the mouth toward the outside of the mouth. As a result, the bite block 100 is formed so that the occlusal body 101 is wider on the outside of the mouth than on the inside of the mouth, so that the contact area of the upper and lower front teeth can be increased, and the burden on each tooth is reduced and occluded. Can be made easier. However, the occlusal body 101 may be formed in a shape in which the width gradually increases from the inner side of the mouth toward the outer side of the mouth, or may be formed with a constant width from the inner side of the mouth to the outer side of the mouth.

In the above-described embodiment, the left and right upper and lower interdental cover bodies 110 are spaced apart from each other so that the distance between the upper and lower dentitions on the wearer is such that the inner surfaces of the upper teeth UT and lower teeth LT are pressed. It was formed wider than the interval. However, as long as the left and right upper and lower interdental cover bodies 110 are formed so as to cover the inner surfaces of the upper teeth UT and the lower teeth LT, it is not always necessary to press the inner surfaces, and they simply touch the inner surfaces. It can also be formed.

Further, in the above-described embodiment, the upper and lower interdental cover body 110 is formed in a shape that covers the inner side surfaces of the upper teeth UT and lower teeth LT of the wearer. However, the upper and lower interdental cover body 110 can also be formed in a shape that covers the inner surfaces of the gums of the upper teeth UT and lower teeth LT of the wearer. According to this, even when the wearer consciously or unconsciously opens his / her mouth during a medical practice such as treatment for the wearer, the bite block 100 is not displaced in position or orientation. Dropout can be prevented more effectively.

Further, in the above embodiment, the left and right upper and lower interdental cover bodies 110 are formed with such lengths that the respective distal end portions reach the respective left and right second molar teeth, and the distance between the left and right distal end portions is set to the respective The interval is set substantially the same as the interval of one molar. However, the left and right upper and lower interdental cover bodies 110 may be formed to have a length that does not reach the left and right second molars, for example, a length that reaches the second premolars and the first molars. it can. In this case, the interval between the left and right tip portions of the left and right upper and lower interdental cover body 110 may be formed wider than the interval between the central portions of the left and right second premolars and the first molars. Note that it is desirable that the left and right upper and lower interdental cover bodies 110 be formed to have a length that reaches the left and right first molars in the wearer, so that they can be more stably mounted.

In the above embodiment, the upper and lower interdental cover body 110 is configured by forming a gap 111 at the center between the left and right upper and lower interdental cover bodies 110. However, since the upper and lower interdental cover body 110 is made of an elastic member, the gap 111 can be omitted.

Further, in the above-described embodiment, the occlusal body 101 is configured by forming the groove portion 102 in the central portion of the upper tooth receiving portion 101a. However, the occlusal body 101 is configured by forming the groove portion 102 in a portion other than the central portion of the upper tooth receiving portion 101a, for example, a position near one of the left and right in the upper tooth receiving portion 101a or the lower tooth receiving portion 101b. You can also. In addition, the occlusal body 101 can be used as a through-hole for a medical device by providing a through-hole penetrating the central portion of the occlusal body 101 instead of or in addition to the groove portion 102. In addition, the occlusal body 101 can be configured by omitting the groove 102 when the groove 102 is unnecessary.

In the above embodiment, the shortest distance from the front end 101d of the occlusal body 101 to the upper front region R1 is set to 30 mm. However, the occlusal body 101 only needs to be formed to have a length that extends into and out of the mouth of the wearer and always protrudes out of the mouth. May be set.

Further, in the above embodiment, the occlusal body 101 has a substantially square cross-sectional shape at the outer periphery. However, the occlusal body 101 can also be formed in a cross-sectional shape of the outer peripheral portion in a shape other than a substantially rectangular shape, for example, a circle, an ellipse, or a polygon (pentagon or hexagon).

In the above embodiment, each part of the bite block 100 is integrally formed of a colorless and transparent silicone material. However, in the bite block 100, the occlusal body 101, the upper tooth movement restricting structure portion 103, the lower tooth movement restricting structure portion 104, and the upper and lower interdental cover body 110 are formed of different materials according to the specifications of the respective portions. be able to. For example, the bite block 100 can be configured by arranging a silicone material around the metal rod of the occlusal body 101. According to this, the bite block 100 can improve the mechanical strength (bending or buckling) of the occlusal body 101.

Also, a configuration such as a modified byte block 101A as shown in FIGS. 16, 17, and 18 may be adopted. In this bite block 101A, the bottom of the groove 102 is cut out at a position on the front end 101d side of the occlusal body 101. If the notch 121 is present at such a position, a degree of freedom that allows the medical device inserted into the groove 102 to be pulled out in the vertical direction can be secured. Further, in the bite block 101A, the structure of the lower tooth movement restricting structure 104 is different from that shown in FIG. Specifically, the lower-tooth movement restricting structure portion 104 includes four convex portions 104b and three groove-shaped concave portions 104a that are slightly shorter in length.

UT ... Upper teeth LT ... Lower teeth α ... Inclination angle β with respect to the horizontal direction of the front inclined portion ... Inclination angles 100, 100A with the rear inclined portion with respect to the horizontal direction ... Bite block 101 ... Occlusal body 101a ... Upper tooth receiving portion 101b ... Lower teeth Receiving portion 101c ... Side portion 101d ... Front end 101e ... Rear end 102 ... Groove portion 103 ... Upper tooth movement restricting structure portion 103a ... Bottom portion 103b ... Convex portion 103c ... Convex portion 104 ... Lower tooth movement restricting structure portion 104a ... Groove Concave portion 104b ... convex portion 110 ... upper and lower interdental cover body 111 ... notch portion 112 ... conduction notch portion 121 ... notch portion L1 ... shortest distance L2 ... vertical dimension L3 (of the occlusal body) ... left and right (of the occlusal body) Directional dimension R1 ... upper front region R2 ... lower front region R3 ... rear region

Claims

An occlusal body arranged between the upper and lower front teeth and extending from the inside of the mouth to the outside;
An upper and lower interdental cover body extending in a plate shape on each of the left and right back teeth while facing the inner surfaces along the inner surfaces of the upper teeth and lower teeth from the inner portion of the mouth in the occlusal body,
The upper and lower interdental cover bodies are made of an elastic member, and the upper and lower interdental cover bodies are spaced at the same upper and lower teeth so as to press the inner surfaces of the upper and lower teeth of the wearer. It is formed wider than the interval between the left and right dentition facing the cover body,
The bite block, wherein the occlusal body includes an uneven movement restricting structure portion that restricts movement in the mouth on a surface that receives at least one of the upper and lower front teeth.
In the byte block according to claim 1,
The bite block, wherein the movement restricting structure portion has a convex portion including an inclined surface inclined to the inner side of the mouth.
In the byte block according to claim 1 or 2,
The bite block, wherein the movement restricting structure portion has a groove-like recess into which a tip portion of each front tooth can be inserted.
In the byte block according to any one of claims 1 to 3,
The occlusal body is
A movement restricting structure portion for upper teeth having a convex portion including an inclined surface inclined to the inside of the mouth on a surface for receiving the upper front tooth;
A bite block comprising a lower tooth movement restricting structure portion having a groove-like recess into which a front end portion of each front tooth can be inserted on a surface for receiving the lower front tooth.
In the byte block according to claim 4,
The bite block, wherein a plurality of the groove-like recesses are formed along a front-rear direction in which the occlusal body extends.
In the byte block according to any one of claims 1 to 5,
The bite block characterized in that the movement restricting structure portion has a concave portion formed in a curved shape curved along a dentition.
In the byte block according to any one of claims 1 to 6,
The bite block is characterized in that the occlusal body is formed wider on the outside of the mouth than on the inside of the mouth.
A rear end located inside the mouth when mounted, a front end positioned outside the mouth when mounted, an upper tooth receiving portion for receiving the upper front tooth, An occlusal body having a lower tooth receiving portion for receiving a lower front tooth;
The occlusal body is provided so as to protrude on the rear end side and is formed in a curved plate shape so that the rear side is concave, and faces along the inner side surface from the front teeth to the left and right back teeth when mounted. An upper and lower interdental cover body disposed,
The upper and lower interdental cover body is made of an elastic member, and the distance between the upper and lower interdental cover bodies is the same as the upper and lower sides so as to press the inner surfaces of the upper and lower teeth of the wearer. Formed wider than the interval between the left and right dentition facing the interdental cover body,
The bite block is characterized in that the occlusal body includes an uneven movement restricting structure portion that restricts movement in the mouth in at least one of the upper tooth receiving portion and the lower tooth receiving portion.
In the byte block according to claim 8,
The bite block, wherein the movement restricting structure portion has a convex portion including an inclined surface inclined to the inner side of the mouth.
In the byte block according to claim 8 or 9,
The bite block, wherein the movement restricting structure portion has a groove-like recess into which a tip portion of each front tooth can be inserted.
In the byte block according to any one of claims 8 to 10,
The occlusal body is
A movement restricting structure portion for upper teeth having a convex portion including an inclined surface inclined to the inside of the mouth in the upper tooth receiving portion;
A bite block comprising: a lower tooth movement restricting structure portion having a groove-like concave portion into which the front end portion of each front tooth can be inserted in the lower tooth receiving portion.
In the byte block according to claim 11,
The bite block, wherein a plurality of the groove-like recesses are formed along a front-rear direction in which the occlusal body extends.
In the byte block according to any one of claims 8 to 12,
The bite block characterized in that the movement restricting structure portion has a concave portion formed in a curved shape curved along a dentition.
In the byte block according to any one of claims 8 to 13,
The bite block is characterized in that the occlusal body is formed wider in the left-right direction on the rear end side than on the front end side.
A byte block according to any one of claims 8 to 14,
The upper and lower interdental cover body has an upper front region in contact with the upper tooth receiving portion, a lower front region in contact with the lower tooth receiving portion, and a rear region protruding rearward from these regions. And
In the occlusal body, the shortest distance from the front end to the upper front region is 25 mm or more.
A byte block according to any one of claims 8 to 14,
A bite block made of a transparent material.
A byte block according to any one of claims 8 to 14,
A bite block, wherein a groove portion extending from the front end side to the rear end side is formed at a central portion in the left-right direction when the occlusal body is viewed from the front end side.
A byte block according to any one of claims 8 to 14,
In the central part in the left-right direction when the occlusal body is viewed from the front end side, a groove portion extending from the front end side to the rear end side is formed,
The bite block, wherein a bottom of the groove is cut out at a position on the front end side of the occlusal body.
In the byte block according to claim 9,
The bite block, wherein the inclined surface of the convex part is further inclined toward the center of the occlusal body.
A byte block according to any one of claims 8 to 14,
The occlusal body has a cross-sectional shape in which the dimension in the left-right direction is larger than the dimension in the vertical direction,
The bite block, wherein the front end side of the occlusal body is formed to have rounded corners.
A byte block according to any one of claims 8 to 14,
The bite block characterized in that the occlusal body is made of an elastic member, and the vertical dimension of the occlusal body is larger than the maximum dimension in a cross section perpendicular to the longitudinal direction of the medical device inserted into the groove.
A byte block according to any one of claims 8 to 14,
The upper and lower interdental cover body has an upper front region in contact with the upper tooth receiving portion, a lower front region in contact with the lower tooth receiving portion, and a rear region protruding rearward from these regions. And
The rear region has an upper corner portion, a lower corner portion and a central portion located therebetween,
A bite block characterized in that a conductive notch is formed in the central portion of the rear region.
A byte block according to any one of claims 8 to 14,
The upper and lower interdental cover body has an upper front region in contact with the upper tooth receiving portion, a lower front region in contact with the lower tooth receiving portion, and a rear region protruding rearward from these regions. And
The rear region has an upper corner portion and a lower corner portion,
The upper corner portion and the lower corner portion are formed so that the corners are rounded,
A bite block characterized in that a peripheral portion of the upper and lower interdental cover body is formed to have a rounded cross-sectional shape.
A byte block according to any one of claims 8 to 14,
The upper and lower interdental cover body has an upper front region in contact with the upper tooth receiving portion, a lower front region in contact with the lower tooth receiving portion, and a rear region protruding rearward from these regions. And
A bite block characterized in that a gap is formed at the center of the lower front region to divide the lower front region into left and right.
A byte block according to any one of claims 8 to 14,
The upper and lower interdental cover body has an upper front region in contact with the upper tooth receiving portion, a lower front region in contact with the lower tooth receiving portion, and a rear region protruding rearward from these regions. And
The bite block, wherein the position of the lower front area is shifted from the position of the upper front area to the rear end side.
A rear end located inside the mouth when mounted, a front end positioned outside the mouth when mounted, an upper tooth receiving portion for receiving the upper front tooth, An occlusal body having a lower tooth receiving portion for receiving a lower front tooth;
Between the upper and lower teeth that are extended to the rear end side of the occlusal body and are formed in a curved plate shape having a concave rear side, and are disposed to face each other along the inner side surface from the front teeth to the left and right back teeth when mounted. A cover body,
The upper and lower interdental cover body is composed of an elastic member, and is formed in a shape capable of pressing each inner surface side of the upper and lower teeth of the wearer,
The bite block is characterized in that the occlusal body includes an uneven movement restricting structure portion that restricts movement in the mouth in at least one of the upper tooth receiving portion and the lower tooth receiving portion.