KR20120014374A - Drill for lateral sinus graft surgical operation - Google Patents

Abstract

PURPOSE: A drill for maxillary sinus graft surgical operation is provided to prevent the lifetime of a drill from being reduced. CONSTITUTION: A drill(1) for maxillary sinus graft surgical operation comprises a drill rod(100), a cutter, a saline solution supply hole, and a punch unit. The cutter(211) cuts the alveolar bone when punching the maxillary sinus. The saline solution supply hole supplies saline solution to the inner side of the cutter in order to cool heat generated by the friction between a cutter and the alveolar bone. The punch unit(200) is prepared in one side of the drill rod.

Description

Drill for lateral sinus graft surgical operation

The present invention relates to a drill for maxillary sinus elevation surgery, and more particularly, to cut the alveolar bone to form a window on the side of the maxillary sinus so that the maxillary sinus elevation can be performed smoothly, the alveolar bone and the cutter during cutting The present invention relates to a drill for maxillary sinus elevation surgery that can cool down the heat generated by friction to prevent shortening of the life of the drill.

Implants are originally meant to be a substitute for recovery when tissue is lost, but in dentistry, implants are made of artificial teeth. In order to replace the lost root (root), a tooth root made of titanium (titanium), which is not rejected by the human body, is planted in the alveolar bone where the tooth falls out, and the artificial tooth is fixed to restore the function of the tooth.

In the case of a general prosthesis or denture, the surrounding teeth and bones are damaged after time, but the implant does not damage the surrounding dental tissues, and the same shape and function as the natural teeth does not cause tooth decay.

Implants also enhance the function of dentures and improve the aesthetic aspects of dental prosthetic restorations, as well as in single brace restorations, and in partial and complete teeth. Furthermore, it disperses excessive stress on surrounding supportive bone tissue and helps stabilize teeth.

On the other hand, the implant success rate in the maxillary posterior part is known to be relatively low compared to the success rate in other parts, for example, the mandibular posterior part during such implantation procedure, because the maxillary posterior part is relatively weak in bone and has the maxillary sinus inside. This is because it is not easy to implant.

In other words, the maxillary sinus, which is located between the upper molar and, more precisely, the upper molar and the side of the nose, is a space surrounded by the mucous membrane and expands downward when the tooth is lost physiologically. As a result of the bone absorption, the amount of bone that can be implanted is insufficient due to the downward expansion, which makes it difficult to implant the implant into the maxillary posterior molar.

In this case, after forming a space by elevating the maxillary sinus lining, a bone graft material is implanted in the secured space, and implantation is implanted therein. Such methods include a vertical approach and a lateral approach.

First, the vertical approach is a method of securing a certain amount of bone remaining at the implant site, and tapping the maxilla several times with a device called a osteotomy in the form of a chisel and hammer to prevent damage to the maxillary sinus lining. Then, a little bit of bone graft material through the hole.

On the other hand, the lateral approach is to expose the inner lining of the maxillary sinus by forming a circular or square hole on the side of the maxillary sinus, and then elevate the exposed maxillary lining of the maxillary sinus and gradually insert a bone graft material.

In this lateral approach, a hole formed in a circular or square side of the maxillary sinus is generally called a window, which is formed by drilling a side of the maxillary sinus with a drill and then removing the perforated part (wall, wall). do.

However, conventionally, when removing the drilled wall in order to use the lateral approach, the wall was separated from the surrounding maxillary sinus using a round bur, and the wall was used using the round bur. When the wall was removed from the surrounding maxillary sinus, it was not easy to separate without damaging the lining of the maxillary sinus, and the alveolar bone was not flat when cutting the alveolar bone for perforation of the maxillary sinus.

Therefore, when drilling the maxillary sinus to the side of the maxillary sinus, the alveolar bone can be cut at the correct position without shaking the center, and when cutting the alveolar bone, a new tool is needed to prevent damage caused by heat generated by friction with the alveolar bone. .

An object of the present invention is to cut the alveolar bone to form a window on the side of the maxillary sinus so that the maxillary sinus elevation can be performed smoothly, and the heat generated by the friction of the alveolar bone and the cutter during the alveolar bone cutting operation, the life of the drill It is to provide a drill for maxillary sinus elevation surgery that can prevent this shortening.

The above object, according to the present invention, a drill rod; And a cutter for cutting the alveolar bone during perforation of the maxillary sinus, and a saline supply hole for supplying saline solution to the inside of the cutter to cool the heat generated by friction between the alveolar bone and the cutter when the alveolar bone is cut by the cutter. It is provided by a drill for maxillary sinus elevation surgery, characterized in that it comprises a perforation provided on one side of the drill rod.

Here, the drilling portion, has a central axis and the same as the drill rod, the drilling body connected to the drill rod and the cutter is formed along the circumferential direction; And a stopper extending in the radial direction from the outer circumferential surface of the perforated body and formed along the circumferential direction of the perforated body.

The perforated body, the cross-sectional area of the cross section which crosses in the longitudinal direction of the perforated body gradually decreases from the cutter side toward the drill rod side, may be provided with a shielding plate for connecting the perforated body and the drill rod.

The perforation part may further include a pointer coupled to an inner surface of the shield plate to protrude in a direction in which the cutter is formed.

The length of the pointer may be longer than the length from the inner surface of the shield plate to the tip of the cutter.

The pointer may be provided with a groove recessed from the surface symmetrically with respect to the central axis of the pointer.

The saline supply hole is formed through the shield plate, it may be provided in a plurality of spaced apart from each other in the circumferential direction from the central axis of the drill rod.

The length from the tip of the cutter to the inner surface of the shielding plate may be longer than the length from the tip of the cutter to the tip of the stopper.

The cutter may be formed to be inclined toward the drill rod at the tip of the cutter, and may be provided with a double inclined portion having different acute angles with respect to the cross line in the longitudinal direction of the drill rod.

The double inclined portion may include: a first inclined portion formed to be inclined toward the drill rod in a length direction of the drill rod at one end of the cutter; And a second inclined portion inclined toward the drill rod side in a length direction of the drill rod from an end point of the first inclined portion.

An inclination angle of the second inclined portion may be greater than an inclination angle of the first inclined portion.

The present invention is to cut the alveolar bone to form a window (window) on the side of the maxillary sinus so that the maxillary sinus elevation can be performed smoothly, the heat generated by the friction of the alveolar bone and the cutter during the cutting operation of the alveolar bone cools the life of the drill The effect which can prevent shortening can be obtained.

1 is a perspective view of a drill for maxillary sinus elevation procedure according to a first embodiment of the present invention.
Figure 2 is a side view of the drill for maxillary sinus elevation procedure according to FIG.
3 is a cross-sectional perspective view showing a cross section of the drill for maxillary sinus elevation surgery according to FIG.
Figure 4 is a perspective view of a drill for maxillary sinus lift according to a second embodiment of the present invention.
5 is a side view of the drill for maxillary sinus elevation according to FIG.
6 is a cross-sectional perspective view showing a cross section of the drill for maxillary sinus elevation surgery according to FIG.
7 and 8 are perspective and partially enlarged perspective views of the window opener.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

Prior to describing the drill for maxillary sinus elevation procedure according to the present invention, a lateral approach of the maxillary sinus elevation is used.

The maxilla is a dental term for the upper jaw, the molar area of the maxilla is often the thickness of the alveolar bone after the tooth is extracted because the maxillary sinus is located in the molar area of the maxilla (upper jaw). Therefore, to compensate for this, the maxillary sinus elevation is performed, and the lateral approach of the maxillary sinus elevation means that the word is performed on the side of the maxilla.

To implement the lateral approach of maxillary sinus elevation, a hole is formed on the side of the maxillary sinus to expose the maxillary lining of the maxillary sinus, which is generally called the window.

The process of forming a window on the side of the maxillary sinus consists of a process of forming a wall by using a drill on the side of the maxillary sinus and separating and removing the wall from the surrounding maxillary sinus. Here, the drill used for the maxillary sinus elevation procedure according to the present invention is used in the process of cutting the alveolar bone to pierce the side of the maxillary sinus.

In the process of separating and removing the wall, a tool for maxillary sinus elevation, which is newly developed by the present applicant, is used together with the drill for maxillary sinus elevation procedure according to the present invention.

Separating the wall with the window opener inserts the window opener between the wall and the surrounding maxillary sinus so that the wall is partially caught in the window opener and then tilts the window opener to close the wall around the maxillary sinus. It is separated and removed.

Hereinafter, a drill for maxillary sinus elevation surgery according to the present invention will be described with reference to the drawings.

1 is a perspective view of a drill for maxillary sinus elevation procedure according to a first embodiment of the present invention, Figure 2 is a side view of the drill for maxillary sinus elevation procedure according to Figure 1, Figure 3 is a drill for maxillary sinus elevation procedure according to Figure 1 Sectional perspective view showing the cross section.

First, referring to these drawings, the drill 1 for maxillary sinus elevation procedure according to the first embodiment of the present invention includes a drill rod 100 and a perforation portion 200 coupled to one side of the drill rod 100. do. And the perforation part 200 is generated in the cutter 211 due to the friction of the cutter 211 and the alveolar bone when cutting the alveolar bone to cut the maxillary sinus for forming a window (window), The saline solution supply hole 213a may be provided to supply the saline solution to the inside of the cutter 211 to cool the heat.

The drill rod 100 in the present embodiment is formed in the shape of a circular column, the drill rod 100 is generally formed in a circular column shape so as not to hurt the oral cavity of the patient because the drill rod is introduced into the oral cavity of the patient. However, the present invention is not limited thereto and may be provided in various forms.

And the drill rod 100 is coupled to one side of the drill rod 100 as described above, the other side opposite to the one side of the hand piece (tool) for working the drill 1 according to the first embodiment of the present invention Shank portion 110 that can be mounted is provided, in the handpiece to supply the saline solution to the cutter 211 when cutting the alveolar bone.

On the other hand, the perforation 200 has a cylindrical shape that is relatively short in length with the drill rod 100 has the same central axis as the drill rod 100, the perforated body 210 is connected to one side of the drill rod 100, It further comprises a stopper 230 extending in the radial direction from the outer circumferential surface of the perforated body 210.

As described above, the drilling part 200 includes a cutter 211 and a saline supply hole 213, which will be described together with the drilling body 210. The perforated body 210 has a cross-sectional area larger than the cross-sectional area of the drill rod 100, has a length shorter than that of the drill rod 100, and has a perforated body opposite to one end of the perforated body 210, that is, the drill rod 100. Cutter 211 is formed at one end of the 210, the cutter 211 is formed along the circumferential direction of the perforated body 210 at one end of the perforated body 210.

On the other hand, the perforated body 210 is provided with a shielding plate 213 which gradually decreases the area of the cross section crossing in the longitudinal direction of the perforated body 210 from the cutter 211 side toward the drill rod 100 side.

The puncture body 210 and the drill rod 100 are connected by the shielding plate 213, and the alveolar bone that is cut when the alveolar bone is cut by the cutter 211 may be prevented from splashing into the oral cavity.

The saline solution supply hole 213a is formed in the shielding plate 213, and the saline supply hole 213a is formed through the shielding plate 213, and the drill rod 100 is drilled with the center axis as the center. A plurality of angles are formed to be spaced apart at regular angles along the radial direction of the rod 100.

The saline supply hole 213a according to the present embodiment has three saline supply holes 213a formed in the shield plate 213 along a predetermined radial direction with respect to the drill rod 100, but need not be limited thereto. It may be formed any number within the range that the strength of the plate 213 is not excessive, or may be formed less than the number of the saline supply holes 213a of the present embodiment.

The outer circumferential surface 210a of the perforated body 210 is provided with a stopper 230 as described above, the stopper 230 extends in a radial direction from the outer circumferential surface 210a of the perforated body 210, the perforated body 210 It is provided with a structure surrounding the outer peripheral surface (210a) of the circumferential direction.

The depth from the tip of the cutter 211 to the inner surface of the shielding plate 213 is formed deeper than the depth from the tip of the cutter 211 to the tip of the stopper 230 facing the cutter 211, thereby providing a cutter ( When cutting the alveolar bone 211, the inner surface of the shielding plate 213 does not come into contact with the stopper 230.

On the other hand, in the present embodiment, the punching unit 200 is connected to the inner surface of the shielding plate 213, and further includes a pointer 250 protruding in one direction of the punching body 210, that is, the cutter 211 is formed. do. The pointer 250 is formed in a cylindrical body and its end is formed in a conical shape. When the alveolar bone is cut by the cutter 211, the pointer 250 is inserted into the alveolar bone when the center of the perforated body 210 is not shaken. The alveolar bone can be cut accurately.

In addition, grooves 251 (see FIG. 1) which are symmetrical to each other are further formed on the outer circumferential surface of the pointer 250 based on the central axis of the pointer 250. Since the pointer 250 is connected to the inner surface of the shield plate 213, the pointer 250 is also rotated when the alveolar bone is cut. The pointer 250 is formed by forming the groove 251 as described above in the pointer 250. The overload may be prevented from occurring when the pointer 250 rotates.

Therefore, the length of the pointer 250 is formed longer than the length from the inner surface of the shielding plate 213 to the tip of the cutter 211 formed in the perforated body 210 so that the pointer 250 is formed in the shielding plate 213. When connected to the side so that the end of the cone-shaped pointer 250 is projected more than the tip of the cutter (211).

On the other hand, Figure 4 is a perspective view of the maxillary sinus lift procedure drill according to a second embodiment of the present invention, Figure 5 is a side view of the maxillary sinus lift procedure drill according to Figure 4, Figure 6 is for maxillary sinus lift procedure according to Figure 4 Sectional perspective view showing the cross section of the drill.

4 to 6, the drill rod 3 for maxillary sinus surgery according to the second embodiment is the drill rod 300 and the alveolar bone, similarly to the drill 1 for maxillary sinus elevation surgery according to the first embodiment. When cutting the alveolar bone with the cutter 411 to cut and the cutter 411, a saline solution that can cool the heat generated by the cutter 411 due to the friction between the cutter 411 and the alveolar bone may be supplied to the inside of the cutter 411. It includes a drilling portion 400 having a saline supply hole (413a) to be able to.

The perforation part 400 further includes a perforation body 410 and a stopper 430 protruding from the outer circumferential surface of the perforation body 410 as in the first embodiment, and the stopper 430 in the first embodiment. Since it is formed in the same manner as the stopper 430 of the description thereof will be omitted.

On the other hand, the cutter 411 is formed at one end of the perforated body 410 as in the first embodiment, the cutter 411 in this embodiment is from the tip of the cutter 411 than the cutter 411 in the first embodiment. The length to the tip of the stopper 430 is longer and the spacing between the cutters 411 is wider.

The cutter 411 is formed to be inclined toward the drill rod 300 at the tip portion, and includes a double inclined portion 411 ′ having different acute angles with respect to the cross line in the longitudinal direction of the drill rod 300.

The double inclined portion 411 'is provided to prevent the cutter 411 from being excessively loaded when the alveolar bone is cut by the cutter 411, and from the tip of the cutter 411. If the length to the tip of the stopper 430 is short, the machining of the double inclined portion 411 'may not be formed on the cutter 411.

Here, the length from the tip of the cutter 411 to the tip of the stopper 430, which is difficult to machine the double inclined portion 411 ', is 0.5 mm or less, and in the first embodiment, the stopper 230 from the tip of the cutter 211. Since the length to the front end of the head) becomes 0.5 mm, the double inclined portion is not formed in the cutter 211 in the first embodiment.

The double inclined portion 411 ′ is formed at an end of the cutter 411, that is, the first inclined portion 411 ′ formed to be inclined along the longitudinal direction of the drill rod 300 opposite to the cutter 411 at the tip of the cutter 411. a) and a second inclined portion 411'b inclined along the longitudinal direction of the drill rod 300 from the end point of the first inclined portion 411'a.

The inclination angle θ ₁ of the first inclined portion 411 ′ a and the inclination angle θ ₂ of the second inclined portion 411 ′ _b have different acute angles as described above. The inclination angle θ ₁ of 411 ′ a is smaller than the inclination angle θ ₂ of the second inclined portion 411 _b .

The drill 3 for maxillary sinus elevation surgery in this embodiment is also provided with a shielding plate 413 and a saline supply hole 413a formed in the shielding plate 413 and capable of supplying saline, as in the first embodiment. . Since these components are configured in the same manner as in the first embodiment, detailed description thereof will be omitted. On the other hand, the drill 3 for maxillary sinus elevation surgery in this embodiment does not include a pointer provided in the first embodiment.

After cutting the maxillary sinus to form a window with the drills 1 and 3 for the maxillary sinus lift procedure according to the first and second embodiments as described above, a wall formed due to the cutting of the maxillary sinus is removed. It is necessary to separate it from the surrounding maxillary sinus. A tool called a window opener as described above is used for this operation.

7 and 8 are perspective and partially enlarged perspective views of the window opener.

The maxillary sinus lift surgery window opener is a handle 510, which is directly wrapped by the hand when the operator performs the operation, and is connected to the handle 510, and the handle 110 when the operator rotates the handle 110. The removal unit 550 and the handle 510 which can be separated from the surrounding maxillary sinus and the wall formed by the drilling operation of the maxillary sinus elevation treatment drills 1 and 3 according to the present invention. It is provided between the removal unit 550 includes a connection portion 530 connecting the handle 510 and the removal unit 550.

An anti-slip groove 511 is formed on the outer circumferential surface of the handle 510 to prevent the handle 510 from slipping from the operator's hand. The non-slip grooves 511 are formed on the outer circumferential surface of the handle 510 along the radial direction of the handle 510, and a plurality of non-slip grooves 511 are spaced apart by a predetermined distance.

The connection part 530 extending from one side of the handle 510 serves to connect the handle 510 and the removal part 550 as described above. The connection part 530 has a slope section 533 and a first straight section 531 and a second straight section 535 on both sides of the slope section 533.

The first straight section 531 is a section connecting the handle 510 and the inclined section 533. The first straight section 531 is coaxial with the handle 510 and is formed side by side and intersects the length direction of the first straight section 531. The cross-sectional area is gradually decreased from the side connected to the handle 510 to the side connected to the inclined section 533.

The second straight section 535 is a section connecting the inclined section 533 and the removal unit 550, is formed parallel to the handle 510 at a position spaced apart from the axis of the handle 510 by a predetermined distance. A cross-sectional area intersecting the longitudinal direction of the second straight section 535 is formed the same over the entire section of the second straight section 535.

Removal portion 550 connected to the second straight section 535 of the connecting portion 530, the wall formed by the drilling operation of the maxillary sinus lift procedure (1, 3) according to the invention from the peripheral maxillary sinus The removal head 551, and the removal head 551 and the connecting portion 530, which is substantially used to separate and remove the wall, which is partially caught by the wall formed by the drills 1 and 3 for maxillary sinus elevation surgery. And a stopper 553 provided therebetween to limit the depth at which the removal head 551 is inserted when the removal head 551 is inserted between the wall and the surrounding maxillary sinus to separate and remove the perforated wall. do.

The stopper 553 and the removal head 551 of the removal part 550 are formed so that the cross section which crosses the longitudinal direction has the shape of a semicircle, and the virtual circular cross section which crosses the longitudinal direction of the removal part 550 especially removal The virtual circular cross section of the head 551 is formed larger than the cross section intersecting the longitudinal direction of the second straight section 535 connected to the removal unit 550.

The stopper 553 formed extending from the second straight section 535 may have the removal head 551 too inserted when the removal head 551 is inserted between the wall and the maxillary sinus to separate and remove the wall. It protrudes along the radial direction from the outer circumferential surface of the removal head 551 so that the removal head 551 can be inserted only by a predetermined depth in order to prevent it from being inserted deeply and damaging the maxillary sinus lining.

In addition, when the wall is removed and removed, the edge 553a of the stopper 553 is connected to the second straight section 535 to prevent damage to the maxillary sinus in contact with the stopper 553. Corner 553a is formed with rounding.

The removal head 551 is formed with an under cut 555 protruding inwardly of the removal head 551 along the radial direction of the removal head 551 on the side opposite to the side connected with the stopper 553. The undercut 555 serves to facilitate separation of the maxillary sinus lining from the wall when the wall is punctured by the removal head 551.

The undercut 555 is formed with an inclined surface 555a inclined upward so as to become thicker from the end toward the inner circumferential surface of the removal head 551, and the end of the undercut 555 is cut by the inclined surface 555a. It is provided with the blade 555b.

When the end of the undercut 555 is provided as the cutting edge 555b as described above, the operator rotates the handle 510 when the wall is not easily separated from the maxillary sinus lining by the rotation of the handle 510. As a result, the undercut 555 rotates so that the cutting edge 555b of the undercut 555 cuts between the wall and the maxillary sinus lining, so that the wall is easily separated.

Hereinafter, a method of using the drill for treating maxillary sinus elevation according to the present invention will be described in relation to the lateral approach of the maxillary sinus elevation, the drill for maxillary sinus elevation according to the first and second embodiments of the present invention (1) , 3) are provided with the thickness of the alveolar bone thick, and the lateral approach of maxillary sinus elevation will be described as an example.

Since the thickness of the alveolar bone is often low after the tooth is extracted, it is necessary to perform the maxillary sinus elevation to transplant the bone graft material.

In particular, when the thickness of the remaining bone is 4 ~ 5mm or less, the lateral approach of the maxillary sinus elevation is performed.In order to transplant the bone graft material after the lateral approach of the maxillary sinus elevation, a window must be formed on the side of the maxillary sinus. At this time, the maxillary sinus is drilled by using the maxillary sinus elevation procedure drills 1 and 3 on the side of the maxillary sinus corresponding to the position of the implant.

 As described above, the drill for maxillary sinus elevation procedure according to the present invention includes a drill 1 according to the first embodiment and a drill 3 according to the second embodiment, and since the thickness of the remaining bone varies from patient to patient, If the thickness of the alveolar bone is thick so that it is difficult to complete the drilling operation only by the drill 1 according to the first embodiment, the drill 3 according to the second embodiment after the first cutting with the drill 1 according to the first embodiment To make the second cut. However, when the alveolar bone thickness of the patient is not thick, the alveolar bone may be cut using only the drill 3 according to the first embodiment.

First, after specifying a position to form a window (window) on the side of the maxillary sinus, the alveolar bone is cut using the drill (1) according to the first embodiment of the drill (1) coupled to the hand piece (hand piece) The pointer 250 provided in the punching body 210 is inserted into the alveolar bone and then rotated.

In the drill 1 rotated by the handpiece operation, the cutter 211 formed at one end of the perforated body 210 interlocks with the handpiece operation to cut the alveolar bone so that the center is not shaken because the pointer 250 is inserted into the alveolar bone. The exact position can be cut without

In addition, since the grooves 251 that are symmetrical with each other based on the central axis of the pointer 250 are formed in the pointer 250, an overload may be prevented from occurring in the pointer 250 that is rotated together with the perforated body 210. have.

On the other hand, the cutter 211 for cutting the alveolar bone is generated due to friction with the alveolar bone, but if the heat is generated and a long time is prolonged, the cutter 211 may cause damage. Saline is supplied from the handpiece, and the saline solution is supplied to the inside of the perforated body 210 through the saline supply hole 213a formed in the shielding plate 213 of the perforated body 210 to friction between the cutter 211 and the alveolar bone. It is possible to cool the heat generated by.

By cutting the alveolar bone by the operation process as described above, if the alveolar bone thickness of the patient is thin, as described above, the drilling of the maxillary sinus can be completed only by the drill 1 according to the first embodiment. Further cutting operations are performed using the drill 3 according to the second embodiment.

The process of cutting the alveolar bone using the drill 3 according to the second embodiment is the same as the process of cutting the alveolar bone using the drill 3 according to the first embodiment. Even if (3) is not provided with the pointer provided in the drill 1 according to the first embodiment, since the first cutting operation has already been performed with the drill 1 according to the first embodiment, an accurate position can be cut.

As described above, after the drilling operation is completed with the maxillary sinus elevation surgery drills 1 and 3, a wall is separated / removed from the surrounding maxillary sinus using a window opener.

The operator grasps the handle 510 to remove the wall formed by the drilling operation, and inserts the removal head 551 of the removal unit 550 between the wall and the surrounding maxillary sinus. If it is not easy to insert the removal head 551 between the peripheral maxillary sinus and the operator, the operator beats the side opposite to the removal part 550 in the handle 110 with a hammer or the like to remove the head between the wall and the peripheral maxillary sinus ( 551).

One side of the removal head 551 is provided with a stopper 553 formed to protrude from the outer circumferential surface of the removal unit 150 so that the removal head 551 enters too deep between the wall and the surrounding maxillary sinus to damage the lining of the maxillary sinus. Can be prevented.

The removal head 551 protrudes to the inside of the removal head 551 on the side opposite to the stopper 553, and an under cut 555 is formed along the radial direction of the removal head 551. If the undercut 555 is not formed in the head 551, the removal head 551 is disposed between the wall and the surrounding maxillary sinus when the handle 510 is rotated to separate the wall from the surrounding maxillary sinus. Problems that can easily escape from may occur.

And the end of the undercut 555 is provided with a cutting edge 155b, the cutting of the undercut 555 provided in the removal head 551 when the removal head 551 separates the wall from the surrounding maxillary sinus. Rotating the blade 555b between the wall and the maxillary sinus lining helps to facilitate the separation and removal of the wall by cutting between the wall and the maxillary sinus lining.

Finally, when the wall is completely removed from the surrounding maxilla, the operator grasps the handle 510 and rotates in the maxillary sinus direction so that the wall partially caught by the removal head 551 and the undercut 155 is removed. Separated from the maxillary sinus lining, it is removed from the surrounding maxillary sinus and finally a window is formed.

In addition, when this operation is performed, the stopper 553 of the removal unit 550 serves as a lever to help the wall separate from the maxillary sinus lining.

As described above, when the drills 1 and 3 for maxillary sinus lift surgery according to the present invention are used, the drill is provided when cutting the alveolar bone during the formation of a window (window), which is essential for the procedure by the lateral approach of the maxillary sinus lift. Since the center of rotation can be grasped with the pointer 250, the alveolar bone can be cut at the correct position.

In addition, when both the drills 1 and 3 for maxillary sinus acupuncture treatment according to the first and second embodiments are used, the maxillary sinus is only used using the drill 1 according to the first embodiment according to the thickness of the alveolar bone which is different for each patient. It is possible to puncture or drill the maxillary sinus by using the drill (1) according to the first embodiment and the drill (3) according to the second embodiment step by step to respond variously to the drilling operation for forming a window Can be obtained.

100,300: drill rod 110,310: shank portion
200,400: perforation 210,410: perforated body
211,411: cutter 213,413: shield plate
230,430: Stopper 250: Pointer
251: groove 411 ': double slope
411'a: first inclined portion 411'b: second inclined portion

Claims (11)

Drill rod; And
Cutter cutting alveolar bone during the drilling of the maxillary sinus, and saline supply hole for supplying saline solution into the cutter to cool the heat generated by friction between the alveolar bone and the cutter when cutting the alveolar bone with the cutter And a drilling portion for maxillary sinus lift, comprising a perforation provided on one side of the drill rod. The method of claim 1,
The perforation part,
A perforated body having the same central axis as the drill rod and connected to the drill rod and having the cutter formed along the circumferential direction; And
And a stopper extending radially from an outer circumferential surface of the perforated body, the stopper being formed along the circumferential direction of the perforated body. The method of claim 2,
The perforated body,
The cross-sectional area of the cross section which crosses the longitudinal direction of the perforated body gradually decreases from the cutter side to the drill rod side, and the shielding plate connecting the perforated body and the drill rod is provided. . The method of claim 3,
The perforation part,
The maxillary sinus lift procedure drill further comprises a pointer coupled to the inner surface of the shield plate protruding in the direction in which the cutter is formed. The method of claim 1,
The length of the pointer is a drill for maxillary sinus lift, characterized in that formed longer than the length from the inner surface of the shielding plate to the tip of the cutter. The method of claim 3,
The pointer for maxillary sinus lift surgery, characterized in that the groove is formed recessed from the surface symmetrically with respect to the center axis of the pointer. The method of claim 3,
The saline supply hole is formed through the shielding plate, the drill for maxillary sinus elevation treatment, characterized in that provided in a plurality of spaced apart from each other in the circumferential direction from the center axis of the drill rod. The method of claim 6,
And a length from the tip of the cutter to the inner surface of the shielding plate is longer than the length from the tip of the cutter to the tip of the stopper. The method of claim 7, wherein
In the cutter,
A drill for maxillary sinus elevation procedure, which is formed to be inclined toward the drill rod at the tip of the cutter, and has a double inclined portion having different acute angles with respect to the cross line in the longitudinal direction of the drill rod. The method of claim 6,
The double inclined portion,
A first inclined portion inclined toward one side of the drill rod along a length direction of the drill rod at one end of the cutter; And
A drill for maxillary sinus elevation procedure comprising a second inclined portion inclined toward the drill rod side in the longitudinal direction of the drill rod from the end point of the first inclined portion. The method of claim 10,
The inclination angle of the second inclined portion is greater than the inclination angle of the first inclined portion maxillary sinus lift treatment.

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