JP2018171190A - Endoscope stand, and set of endoscope and endoscope stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope stand in which a holder part holding an endoscope is easily attached/detached to/from a support rod extending from a ball joint part, and inhibits rotation of the holder part, around a shaft of the support rod.SOLUTION: An endoscope stand comprises a stand body part raised from a base part, and a holder part provided at a tip side of the stand body part and holding an operation part of an endoscope. The stand body part has a ball joint part and a support rod supporting the holder part extending from a ball of the ball joint part. The support rod has an anisotropic cross-sectional shape part having anisotropy around the shaft of the support rod. The holder part is provided with an insertion hole into which the support rod is inserted. The insertion hole includes an installation part detachably installing the holder part on the support rod due to having an internal diameter corresponding to change in an external diameter in an axial direction of the support rod, and a rotation inhibiting part having an anisotropic cross-sectional shape and engaged with the anisotropic cross-sectional shape part.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an endoscope stand that supports an endoscope, and a set of an endoscope and an endoscope stand.

  In recent years, observation of a living tissue and surgery are generally performed using an endoscope. The practitioner operates while holding the endoscope during the procedure. Although endoscopes have become smaller and more compact in recent years, they are still heavy and bulky. In particular, during the treatment, the practitioner presses an operation button provided on the operation unit of the endoscope while holding the endoscope, or projects a dedicated tool from the distal end of the endoscope to perform a treatment of the living tissue. In order to perform this, an operation of inserting a dedicated tool into the forceps hole from the operation part provided with the forceps hole and performing a treatment on the living tissue is performed.

In order to solve such a problem, there is known an endoscope holding apparatus that is improved in usability without being restricted by a practitioner's standing position (Patent Document 1).
The endoscope holding apparatus grips an endoscope at the end of a distal end arm, a plurality of openable arms provided in series at a distal end portion of the stand, and an end of the distal end arm. A gripping part and a housing are provided. The housing and the gripping portion are connected to the tip arm via a ball joint mechanism.

JP 2004-275203 A

In the endoscope holding apparatus, a motor and various gears are provided in a housing connected to a tip arm and a ball joint portion, and the endoscope gripped by the grip portion can be moved in three directions. .
Since an endoscope is inserted into a human body and used for diagnosis or treatment of living tissue, a part of the living tissue or body fluid adheres to the insertion portion of the endoscope as filth. For this reason, the filth attached to the insertion part collected from the human body is scattered on the gripping part or the housing, or the filth adheres to the housing or the gripping part due to contact with the insertion part and the gripping part or the housing. Is likely to be contaminated. For this reason, it is preferable that the housing and gripping portion on the tip side from the ball joint portion are detachable from the ball joint portion so that the contaminated housing and gripping portion can be easily replaced.

  However, the endoscope holding device does not have a configuration in which the housing and the grip portion can be easily replaced. In order to obtain a replaceable structure, when the housing is not provided, it is preferable that the gripping part can be easily attached to and detached from the support rod that supports the gripping part and extends from the ball joint part. However, if the degree of fixing of the grip portion to the support bar is loosened in order to facilitate attachment / detachment, the grip portion is likely to rotate around the axis of the support rod. Originally, the endoscope holding device needs to be maintained in the same direction except that it is moved in order to change the direction of the endoscope. It is not preferable that the direction of the endoscope changes.

  Therefore, the present invention allows the gripping part (holder part) for gripping the endoscope to be easily attached to and detached from the support rod extending from the ball joint part, and even if the gripping part (holder part) receives force, It is an object of the present invention to provide an endoscope stand that can prevent rotation of a gripping portion (holder portion) around an axis of a support bar, and a set of an endoscope and an endoscope stand.

One embodiment of the present invention is an endoscope stand that holds an endoscope. The endoscope stand is
A base part in contact with the floor surface;
A long stand main body erected from the base,
A holder portion that is provided on the distal end portion side of the stand main body portion and holds an operation portion of an endoscope that is operated by a practitioner for a surgical operation.
The stand main body part includes a ball joint part including a ball for freely changing the orientation of the holder part, and a support bar that supports the holder part extending from the ball of the ball joint part,
The support bar has an anisotropic cross-sectional portion having an anisotropic cross section having anisotropy around an axis of the support bar.
The holder part is provided with an insertion hole into which the support bar is inserted.
The insertion hole has an inner diameter corresponding to a change in the outer diameter of the support rod in the axial direction, so that the holder portion can be detachably attached to the support rod, and an axis around the support rod. A rotation preventing portion having an anisotropic hole cross-sectional shape fitted to the anisotropic cross-sectional shape portion so as to prevent the holder portion from rotating.

  It is preferable that the mounting portion is provided on the opening side of the insertion hole in the depth direction of the insertion hole with respect to the rotation blocking portion.

  On the inner wall surface of the insertion hole, a cut reaching the outer surface of the holder portion is provided at least on the opening side of the insertion hole in the depth direction of the insertion hole with respect to the mounting portion. However, it is preferable to extend to the opening of the insertion hole.

  It is preferable that the mounting portion is provided in the middle of the notch extending to the opening along the depth direction of the insertion hole.

The support rod has an outer diameter step portion in which the outer diameter of the support rod is thinned in a step shape,
The insertion hole has an inner diameter step portion in which the inner diameter of the insertion hole is reduced stepwise, and the inner diameter step portion is provided as the mounting portion so as to lock the outer diameter step portion. Is preferable.

The support rod has an outer diameter reduction portion that maintains an outer diameter that is reduced in a stepped manner with respect to the outer diameter of the support rod on both sides in the axial direction, and maintains the reduced outer diameter.
The insertion hole has an inner diameter reduction portion that reduces the inner diameter of the insertion hole stepwise with respect to the inner diameter of the insertion hole on both sides in the depth direction of the insertion hole, and maintains the reduced inner diameter,
It is also preferable that the inner diameter reduced portion is provided as the mounting portion so as to be fitted to the outer diameter reduced portion.

  It is preferable that the anisotropic cross-sectional shape portion has a cross-sectional shape that is contoured by an arc shape and a linear shape.

  The insertion length of the support rod inserted into the insertion hole is preferably 50 to 70% of the projection length of the support rod protruding from the ball.

  The rotation blocking portion extends from the bottom of the insertion hole toward the opening side of the insertion hole, and the rotation blocking portion extends in the depth direction toward the opening side of the insertion hole. The extending length is preferably 15 to 25% of the insertion length of the support rod inserted into the insertion hole.

  In the mounting part, the extension length of the mounting part in which the mounting part extends in the depth direction of the insertion hole is 8 to 16% of the insertion length of the support rod inserted into the insertion hole. It is preferable.

The ball joint portion includes the ball and a ball receiving portion that receives and presses the ball,
It is preferable to include a cover member that is detachably provided on the support bar or the holder part so as to cover the ball and the gap between the ball and the ball receiving part.

Another aspect of the present invention is an endoscope stand that holds an endoscope. The endoscope stand is
A base part in contact with the floor surface;
A long stand main body erected from the base,
A holder portion that is provided at a distal end portion of the stand main body portion and grips an operation portion of an endoscope that is operated by a practitioner for a surgical operation.
The stand body portion includes a ball joint portion including a ball for freely changing the orientation of the holder portion and a ball receiving portion for receiving and pressing the ball, and the holder portion extending from the ball of the ball joint portion. And a support rod for supporting.
The holder part is provided with an insertion hole into which the support bar is inserted,
The insertion hole includes a mounting portion that allows the holder portion to be detachably mounted on the support rod with respect to the axial direction of the support rod.
The endoscope stand includes a cover member that is detachably provided on the support bar or the holder part so as to cover the ball and a gap between the ball and the ball receiving part.

Another aspect of the present invention is a set of an endoscope and an endoscope stand that holds the endoscope. The endoscope of the set includes an operation unit that is operated by a practitioner for a surgical operation.
The endoscope stand is
A base part in contact with the floor surface;
A long stand main body erected from the base,
A holder portion provided at a distal end portion of the stand main body portion and holding the operation portion of the endoscope.
The stand main body part includes a ball joint part including a ball for freely changing the orientation of the holder part, and a support bar that supports the holder part extending from the ball of the ball joint part,
The support bar has an anisotropic cross-sectional portion having an anisotropic cross section having anisotropy around an axis of the support bar.
The holder part is provided with an insertion hole into which the support bar is inserted.
The insertion hole prevents the holder portion from rotating around the support rod, and a mounting portion for attaching the holder portion to the support rod so as to be detachable with respect to the axial direction of the support rod. And an anti-rotation portion having an anisotropic hole cross-sectional shape fitted to the anisotropic cross-sectional shape portion.

  According to the above-described endoscope stand and the set of the endoscope and the endoscope stand, the holding portion (holder portion) for holding the endoscope can be easily attached to and detached from the support rod extending from the ball joint portion. Even if the gripping part (holder part) receives a slight force, rotation of the gripping part (holder part) around the axis of the support rod can be prevented.

It is a block diagram of an example of composition of an endoscope system of this embodiment. It is a figure explaining the example of the endoscope stand of this embodiment held by the endoscope. It is an enlarged view which expands and shows an example of the ball joint part used by this embodiment. It is a figure explaining an example of composition of a ball joint part used by this embodiment. It is a figure explaining an example of composition of a ball joint part used by this embodiment. (A), (b) is the front view and side view which show the example of the support rod used by this embodiment. It is a figure explaining the example of the support bar inserted in the insertion hole of the holder part used by this embodiment. It is a figure explaining the example of the covering member used by this embodiment.

Hereinafter, the endoscope stand of the present embodiment will be described with reference to the drawings.
FIG. 1 is an external perspective view of an example of an endoscope stand 10. FIG. 2 is a diagram illustrating an example of the endoscope stand 10 that holds the endoscope 2.
The endoscope stand 10 holds and holds the endoscope when a practitioner performs a treatment. The endoscope stand 10 mainly includes a holder portion 3, a stand main body portion 6, and a base portion 7.

  The base portion 7 is a portion in contact with the floor surface. Even if the endoscope is gripped and held, and even when a force is applied to the operation portion of the endoscope, the endoscope tilts or changes its position. We have weight and size so that there is no. For example, the base portion has a weight of 5 to 10 kg.

  The stand main body 6 is a long portion erected from the base portion 7. The length can be adjusted according to the practitioner so that the practitioner can perform the treatment while standing or sitting on a chair.

  The stand main body portion 6 includes a ball joint portion 5 including a ball 12 for freely changing the orientation of the holder portion 3, a support rod 13 extending from the ball 12 of the ball joint portion 5 and supporting the holder portion 3, Is provided. The ball joint portion 5 and the support rod 13 will be described later.

The holder portion 3 is provided on the side of the distal end portion of the stand main body portion 6 and holds the operation portion 2A of the endoscope 2 that is operated by a practitioner for a surgical operation. Since the holder portion 3 holds and holds the endoscope 2, it is not necessary for the practitioner to hold and hold the endoscope 2, and the operator pushes the operation button of the operation portion 2A or inserts it through the forceps hole. We can concentrate on the treatment using a special tool protruding from the tip.
For this reason, the endoscope 2 can be arranged at an optimal position and orientation by rotating or moving the support bar 13 in the X direction, the Y direction, and the Z direction. Further, the ball joint portion 5 has a mechanism for maintaining a fixed state so that the endoscope 2 arranged at the optimum position and orientation does not change.

FIG. 3 is an enlarged view showing an example of the ball joint portion 5. 4 and 5 are diagrams for explaining an example of the configuration of the ball joint portion 5.
The ball joint portion 5 includes a ball 12 and a ball receiving portion 27 that houses the ball 12 and receives and presses the ball 12. The ball 12 is made of, for example, resin. The ball receiving portion 27 has a cylindrical shape, and is configured such that the ball 12 is disposed in the cylindrical shape. The diameter of one cylindrical opening 27A of the ball receiving portion 27 is smaller than the inner diameter of the cylindrical shape and smaller than the diameter of the ball 12 so that the ball 12 does not jump out of the opening 27A. An end portion 26 of the cylindrical stand main body 6 is inserted into the other cylindrical opening 27B side of the ball receiving portion 27. That is, the ball 12 is disposed between the opening 27 </ b> A and the end portion 26. Protrusions 26 </ b> A and 26 </ b> B are provided on the cylindrical outer peripheral surface of the end portion 26 at positions where the end portion 26 faces each other. Corresponding to the protrusions 26A and 26B, grooves 27C and 27D are provided on the inner wall surface of the ball receiving portion 27 at positions facing each other. FIG. 4 is a cutaway view of a part of the ball receiving portion 27, so that a groove 27 </ b> C corresponding to the protrusion 26 </ b> A is shown on the inner wall surface of the ball receiving portion 27.

  The grooves 27C and 27D extend from the opening 27B in the cylindrical central axis direction of the ball receiving portion 27, and then bend and extend in a direction slightly inclined with respect to the plane perpendicular to the central axis direction to be closed. Yes. Between the bent portions and the closed portions of the grooves 27C and 27D, the grooves 27C and 27D are inclined so as to go to the opening 27A side as the closed portion is advanced. The protrusion 26A engages with the groove 27C, and the protrusion 26B engages with the groove 27D. When the practitioner rotates the ball receiving portion 27 around the central axis, the protrusion 26A moves along the inclined portion of the groove 27C, and the protrusion 26B moves along the inclined portion of the groove 27D. The ball receiving portion 27 approaches the ball 12 side. Therefore, the ball 12 is pressed between the end portion 26 and the peripheral portion of the opening 27 </ b> A of the ball receiving portion 27. Thereby, the ball 12 is fixed by a frictional force caused by pressing of the end portion 26 and the ball receiving portion 27 so as not to rotate freely. That is, the ball joint portion 5 is in a fixed state.

A support bar 13 protrudes from the ball 12 of such a ball joint portion 5.
The holder portion 3 is detachably attached to the distal end side of the support bar 13 protruding from the ball 12. The reason why the holder portion 3 is detachably mounted is to allow easy replacement with a new holder portion 3 for each treatment. After the treatment, fragments of biological tissue, body fluids, and the like are attached to the insertion portion of the endoscope 2 collected from the inside of the human body as filth. This filth may adhere to the holder part 3 and contaminate the holder part 3 in some cases. It is not preferable to perform the treatment using the contaminated holder part 3.

FIGS. 6A and 6B are a front view and a side view showing an example of the support bar 13.
The support bar 13 has a circular section and a non-circular section. 6A and 6B, the end E1 is inserted into the ball 12. The end E2 is inserted into an insertion hole 8 (see FIG. 7) provided in the holder portion 3. Here, the support bar 13 is provided with an anisotropic cross-section portion 13A and an outer diameter reduction portion 13B in order from the end E2 toward the end E1. The anisotropic cross-sectional shape portion 13A and the outer diameter reduction portion 13B are provided in the axial direction of the support bar 13 with a space therebetween. The anisotropic cross-sectional shape portion 13A and the outer diameter reduction portion 13B are inserted into the insertion hole 8 provided in the holder portion 3.

The anisotropic cross-sectional shape portion 13 </ b> A has an anisotropic cross section having anisotropy around the axis of the support bar 13. Here, the anisotropic shape means that it is not an isotropic circular shape around the axis, and means a non-circular shape. Here, the circular shape means a perfect circular shape that does not include an elliptical shape. In the example shown in FIGS. 6A and 6B, the cross-sectional shape includes a contour in which a part of a circular arc that is a cylindrical cross-sectional shape is a straight line in two places. Specifically, the cross-sectional shape of the anisotropic cross-sectional shape portion 13A is a shape in which a so-called D-cut is applied at two positions facing each other in a cylindrical shape.
The outer diameter reducing portion 13B has two outer diameter step portions in which the outer diameter of the support bar 13 is reduced stepwise when proceeding from the end E2 toward the end E1 and from the end E1 toward the end E2. 13C and maintenance part 13D which maintains the reduced outer diameter.

  An insertion hole 8 is provided so that the holder portion 3 is attached to such a support rod 13. FIG. 7 is a view for explaining an example of the support bar 13 inserted into the insertion hole 8.

  The insertion hole 8 includes a rotation preventing portion 8A having an anisotropic hole cross-sectional shape corresponding to the cross-sectional shape of the anisotropic cross-sectional portion 13A of the support bar 13. The rotation blocking portion 8A and the anisotropic cross-sectional shape portion 13A are locked to each other, so that the rotation of the excavator portion 3 around the axis of the support bar 13 is blocked.

Further, the insertion hole 8 maintains an inner diameter stepped portion 8C having an inner diameter reduced stepwise corresponding to the outer diameter stepped portion 13C in which the outer diameter of the support bar 13 is reduced stepwise. A mounting portion 8B including a maintaining portion 8D is provided. That is, the mounting portion 8B has an inner diameter corresponding to a change in the outer diameter of the support bar 13 in the axial direction. The holder 3 is fixed to the support bar 13 so that the holder part 3 does not move in the axial direction of the support bar 13 by locking the outer diameter reduction part 13B to the mounting part 8B.
The outer diameter of the portion on the end E2 side with respect to the outer diameter reduced portion 13B of the support bar 13 is larger than the outer diameter of the outer diameter reduced portion 13B. When the support bar 13 is inserted into the insertion hole 8, this portion hardly passes through the mounting portion 8B having a small inner diameter. For this reason, the inner wall surface of the insertion hole 8 is provided with a cut 9 (see FIG. 3) that reaches the outer surface of the holder portion 3. The notch 9 extends to the opening of the insertion hole 8. For this reason, a portion having an outer diameter larger than the outer diameter of the outer diameter reducing portion 13B on the side of the end E2 with respect to the outer diameter reducing portion 13B of the support bar 13 is widened by the notch 9 to expand the inner diameter of the mounting portion 8B The part 8B can be passed. At this time, a portion near the notch 9 between the inner wall surface of the mounting portion 8 and the outer surface of the holder portion 3 functions as an elastic member, and the inner wall surface of the mounting portion 8B tends to press the support rod 13. For this reason, when the outer diameter reduced portion 8B comes into contact with the mounting portion 18B, the outer diameter reduced portion 18B is engaged with the mounting portion 8B and is engaged with the mounting portion 8B. As a result, the support bar 13 is mounted (fixed) in the insertion hole 13.

  Thus, since the insertion hole 8 has the mounting portion 8B having an inner diameter that changes in accordance with the change in the axial direction of the outer diameter of the support rod 13, the holder portion 3 can be moved with respect to the axial direction of the support rod 13. The support rod 13 can be detachably attached. The support bar 13 has an anisotropic cross section 13A having an anisotropic cross section having anisotropy around the axis of the support bar 13, and the insertion hole 8 of the holder part 3 has an anisotropic cross section. Since the rotation preventing portion 8A having an anisotropic hole cross-sectional shape fitted to the shape portion 13A is provided, the holder portion 3 rotates around the axis of the support rod 13 when the holder portion 3 is mounted on the support rod 13. Can be prevented. That is, even if the holder part 3 receives force, the rear rudder part 3 can be prevented from rotating around the axis of the support bar 13. For this reason, it is possible to prevent the endoscope 2 held by the holder unit 3 from changing its position and orientation when the ball joint unit 3 is fixed.

  As shown in FIG. 7, the mounting portion 8B is preferably provided on the opening side of the insertion hole 8 in the depth direction of the insertion hole 8 with respect to the rotation prevention portion 8A. Since the mounting portion 8B is on the opening side, the support rod 13 is fixed on the opening side of the insertion hole 8 and is different from the rotation prevention portion 8A having a cross-sectional shape that fits on the bottom side of the insertion hole 8. Since the anisotropic cross-sectional shape portion 13 </ b> A is present, the holder portion 3 can be securely attached to the support rod 13 without wobbling.

  At this time, the inner wall surface of the insertion hole 8 is provided with a notch 9 reaching the outer surface of the holder part 8, and the notch 9 extends to the opening of the insertion hole 8, so that the elastic characteristics of the material of the holder part 3 Since the inner wall surface of the mounting portion 8B of the insertion hole 8 is pressed against the outer diameter reduced portion 13B of the support bar 13 using the urging force generated by the above, the mounting portion 8B and the outer diameter reduced portion 13B are more reliably fitted. Moreover, when the support bar 13 is inserted into the insertion hole 8, the inner diameter can be expanded by the notch 9 when a portion having a larger outer diameter than the outer diameter reducing portion 13 B passes through the mounting portion 8 B having a smaller inner diameter. A portion having a larger outer diameter than the reduced portion 13B can easily pass through the mounting portion 8B having a smaller inner diameter.

  Moreover, it is preferable that the mounting portion 8 </ b> B is provided in the middle of the cut 9 extending to the opening along the depth direction of the insertion hole 8. Thereby, the small inner diameter of the mounting portion 8B can be expanded by the notch 9, and the biasing force due to the elastic characteristics of the material of the peripheral holder portion 3 provided with the notch 9 is effectively used for the mounting portion 8B. Since the inner wall surface of the mounting portion 8B of the insertion hole 8 can be pressed against the outer diameter reduced portion 13B of the support bar 13, the mounting portion 8B and the outer diameter reduced portion 13B can be more reliably fitted.

  The support rod 13 has an outer diameter step portion 13C in which the outer diameter of the support rod 13 is thinned in a step shape, and the insertion hole 8 has an inner diameter step portion 8C in which the inner diameter of the insertion hole 8 is made smaller in a step shape. The inner diameter step portion 13C is preferably provided as the mounting portion 8B so as to lock the outer diameter step portion 13C. Since the outer step 13C and the inner step 8C are locked, the support bar 13 can be configured not to be pulled out to the opening side of the insertion hole 8. In the case where only one outer shape step 13C and one inner diameter step portion 8C are provided, the support rod 13 inserted into the hole bottom of the insertion hole 8 is configured to abut so that the insertion hole 8 moves toward the hole bottom. Can be prevented.

  Further, as shown in FIG. 7, the support rod 13 has a smaller outer diameter of the support rod 13 along the axial direction with respect to the outer diameter of the support rod 13 on both sides in the axial direction. The insertion hole 8B has an outer diameter reducing portion 13B that maintains the outer diameter, and the inner diameter of the insertion hole 8 is stepwise smaller than the inner diameter of the insertion hole 8 on both sides in the depth direction of the insertion hole 8. It has an inner diameter reduced portion (mounting portion 8B) that maintains the reduced inner diameter, and the inner diameter reduced portion (mounting portion 8B) is provided as the mounting portion 8B so as to be fitted to the outer diameter reduced portion 13B. Is preferred. Thereby, it is possible to reliably prevent the holder portion 3 from moving in the axial direction of the support rod 13.

  The anisotropic cross-sectional shape portion 13A of the support bar 13 has, for example, a cross-sectional shape that is contoured in an arc shape and a linear shape. An anisotropic cross-sectional shape can be easily formed by cutting out a part of the circular cross-section and making the arc-shaped portion a straight line. Such a straight line shape is provided in parallel at the opposite position of the cross-sectional shape, so that rotation around the axis of the support bar 13 of the holder portion 3 can be reliably prevented.

  According to one embodiment, in addition to the configuration of the holder part 3 and the support bar 13 described above, it is preferable to include a covering member 20 that is detachably provided on the support bar 13 or the holder part 3. FIG. 8 is a diagram illustrating an example of the covering member 20.

  In the example shown in FIG. 8, the cover member 20 is a member that is attached to the support rod 13 and spreads in an umbrella shape from the attachment position on the support rod 13 toward the ball 12, and is made of a deformable resin material. Yes. The covering member 20 covers at least the ball 12 and the gap between the ball 12 and the ball receiving portion 27 so as not to be exposed. In this way, when the covering member 20 covers the ball 12 and the gap between the ball 12 and the ball receiving portion 27 so as not to be exposed, when the insertion portion of the endoscope 2 is recovered from the inside of the human body, It is possible to prevent the attached dirt from adhering to the ball 12 or entering the gap between the ball 12 and the ball receiving portion 27 to contaminate the endoscope stand 10. In addition, since the practitioner wears a glove or the like to perform the treatment, it is possible to prevent the lubricant applied to the surface of the glove, such as a silicon lubricant, from adhering to the ball 12. When the lubricant adheres to the ball 12, the frictional force between the ball 12 and the ball receiving portion 27 is reduced, and as a result, the fixed state of the endoscope 2 and the holder portion 3 by the ball receiving portion 27 does not sufficiently function, It becomes difficult to keep the endoscope 2 fixed at a predetermined position and orientation.

Thus, providing the covering member 20 is important in the endoscope stand 10.
The cover member 20 includes a hole having an inner diameter slightly smaller than the outer diameter of the support bar 13, and the cover member 20 can be attached to the support bar 13 by extending the hole and passing the support bar 13. That is, the covering member 20 is a detachable and replaceable part. It is preferable to replace the covering member 20 with a new covering member 20 for each treatment. After the treatment, fragments of biological tissue, body fluids, and the like are attached to the insertion portion of the endoscope 2 collected from the inside of the human body as filth. This dirt may adhere to the ball 12 and contaminate the ball 12 in some cases. It is not preferable to perform the treatment using the contaminated endoscope stand 10.

  In the example shown in FIG. 8, the covering member 20 is configured to extend downward from the support bar 13 in an umbrella shape. However, according to one embodiment, the covering member 20 is configured such that the holder portion 3 is viewed from the inside. It is also preferable that the mirror 2 is provided in a gripping part that grips the operation part 2A of the mirror 2 so as to wrap. In this case, the covering member 20 is provided so as to hang downward from the grip portion. In this case, since the covering member 20 blocks between the insertion portion of the endoscope 2 collected from the inside of the human body and the ball 12 or the ball receiving portion 27, the filth adhering to the insertion portion is removed from the ball 12 or the ball receiving portion. 27 can be prevented from being scattered. In this respect, the ball 12 and the gap between the ball 12 and the ball receiving portion 27 may be exposed from the covering member 20, but the ball 12 and the ball receiving portion 27 are reliably prevented from being contaminated. From the point of view, it is preferable that the covering member 20 is configured to cover at least the ball 12 and the gap between the ball 12 and the ball receiving portion 27. According to one embodiment, the covering member 20 is a sheet-like member, is sandwiched between the gripping surface of the grip portion of the holder portion 3 and the operation portion 2A, and hangs downward from the grip portion of the holder portion 3. It is preferable to set it as the structure extended to.

An endoscope stand 10 that holds an endoscope 2 according to an embodiment includes a base portion 7 that is in contact with a floor surface, a long stand main body portion 6 that is erected from the base portion 7, and a tip of the stand main body portion 6. And a holder portion 3 that grips an operation portion 2A of an endoscope that is provided to the operator and is operated by a practitioner for a surgical operation.
At this time, the stand main body portion 6 includes a ball joint portion 5 including a ball 12 for freely changing the orientation of the holder portion 3 and a ball receiving portion 27 for receiving and pressing the ball 12, and a ball of the ball joint portion 3. And a support bar 13 that supports the holder part 3 extending from the line 12.
The holder portion 3 is provided with an insertion hole 8 into which the support bar 13 is inserted.
The insertion hole 8 includes a mounting portion 8B that allows the holder portion 3 to be detachably mounted on the support rod 13 with respect to the axial direction of the support rod 13.
At this time, the covering member 20 detachably provided on the support portion 13 or the holder portion 3 covers the ball 12 and the gap between the ball 12 and the ball receiving portion 27 so as not to be exposed.

  In the endoscope stand 10 as described above, according to one embodiment, the insertion length of the support bar 13 inserted into the insertion hole 8 is 50 to 70 of the protruding length of the support bar 13 protruding from the ball 12. % Is preferred. By setting the insertion length of the support rod 13 inserted into the insertion hole 8 within the above range, the support rod 13 is inserted into the insertion hole 8 by a sufficient length, so that the rotation preventing portion 8A supports the holder portion 3. The rotation around the axis of the rod 13 can be effectively suppressed.

  According to one embodiment, the rotation prevention portion 8A extends from the bottom of the insertion hole 8 toward the opening side of the insertion hole 8, and the rotation prevention portion 8A extends toward the opening side of the insertion hole 8. The extending length of the portion 8A in the depth direction is preferably 15 to 25% of the insertion length of the support bar 13 inserted into the insertion hole 8. By setting the extension length of the rotation prevention portion 8A within the above range, the rotation prevention portion 8A can rotate around the axis of the support rod 13 of the holder portion 3 even when the holder portion 3 receives a large force from the endoscope 2. Can be reliably prevented. In particular, since the operation portion 2A of the endoscope 2 has forceps holes for inserting operation buttons and dedicated tools, the holder portion 3 is likely to receive force from the practitioner during operation by the practitioner. In such a case, the rotation preventing portion 8A can reliably prevent rotation of the holder portion 3 around the axis of the support bar 13.

According to one embodiment, the mounting portion 8B has an extension length of the mounting portion 8B in which the mounting portion 8B extends in the depth direction of the insertion hole 8 is the insertion length of the support bar 13 inserted into the insertion hole 8. It is preferable that it is 8 to 16%. By setting the extending length of the mounting portion 8B within the above range, the holder portion 3 can be securely mounted (fixed) without wobbling the support rod 13, and can be easily removed. That is, it can be easily attached and detached.
In particular, the portion near the notch 9 between the inner wall surface of the mounting portion 8 of the insertion hole 8 and the outer surface of the holder portion 3 functions as an elastic member, and this portion presses the inner diameter reduced portion 13B. 3 can be securely mounted (fixed) without wobbling the support rod 13.

  According to one embodiment, the endoscope stand 10 can be provided as a set together with the endoscope 2. According to such a set, the practitioner does not need to operate the operation unit 2A while always holding the endoscope 2, so that the physical fatigue of the practitioner can be reduced.

  As described above, the endoscope stand of the present embodiment and the set of the endoscope and the endoscope stand have been described. However, the present invention is not limited to the above-described configuration, and is within the scope of the technical idea of the present invention. Various modifications are possible.

2 Endoscope 2A Operation part 3 Holder part 5 Ball joint part 6 Stand main body part 7 Base part 8 Insertion hole 8A Rotation prevention part 8B Mounting part 9 Cut 10 Endoscope stand 12 Ball 13 Support rod 13A Anisotropic cross-sectional shape part 13B Outer diameter reduction part 13C Outer diameter step part 13D Maintenance part 20 Cover member 26 End part 26A, 26B Protrusion 27 Ball receiving part 27A, 27B Opening 27C, 27D Groove

Claims (13)

An endoscope stand for holding an endoscope,
A base part in contact with the floor surface;
A long stand main body erected from the base,
A holder portion that is provided on the side of the distal end portion of the stand main body portion and grips an operation portion of an endoscope that is operated by a practitioner for a surgical operation;
The stand main body part includes a ball joint part including a ball for freely changing the orientation of the holder part, and a support bar that supports the holder part extending from the ball of the ball joint part,
The support bar has an anisotropic cross-section having an anisotropic cross section having anisotropy around the axis of the support bar,
The holder part is provided with an insertion hole into which the support bar is inserted,
The insertion hole has an inner diameter corresponding to a change in the outer diameter of the support rod in the axial direction, so that the holder portion can be detachably attached to the support rod, and an axis around the support rod. An endoscope comprising: a rotation blocking portion having an anisotropic hole cross-sectional shape fitted to the anisotropic cross-sectional shape portion so as to prevent the holder portion from rotating. stand.   The endoscope stand according to claim 1, wherein the mounting portion is provided on an opening side of the insertion hole in a depth direction of the insertion hole with respect to the rotation blocking portion.   On the inner wall surface of the insertion hole, a cut reaching the outer surface of the holder portion is provided at least on the opening side of the insertion hole in the depth direction of the insertion hole with respect to the mounting portion. The endoscope stand according to claim 1, which extends to an opening of the insertion hole.   The endoscope stand according to claim 3, wherein the mounting portion is provided in the middle of the cut extending along the depth direction of the insertion hole to the opening. The support rod has an outer diameter step portion in which the outer diameter of the support rod is thinned in a step shape,
The insertion hole has an inner diameter step portion in which the inner diameter of the insertion hole is reduced stepwise, and the inner diameter step portion is provided as the mounting portion so as to lock the outer diameter step portion. The endoscope stand according to any one of claims 1 to 4. The support rod has an outer diameter reduction portion that maintains an outer diameter that is reduced in a stepped manner with respect to the outer diameter of the support rod on both sides in the axial direction, and maintains the reduced outer diameter.
The insertion hole has an inner diameter reduction portion that reduces the inner diameter of the insertion hole stepwise with respect to the inner diameter of the insertion hole on both sides in the depth direction of the insertion hole, and maintains the reduced inner diameter,
The endoscope stand according to any one of claims 1 to 5, wherein the inner diameter reduction part is provided as the mounting part so as to be fitted to the outer diameter reduction part.   The endoscope stand according to any one of claims 1 to 6, wherein the anisotropic cross-sectional shape portion has a cross-sectional shape that is contoured by an arc shape and a linear shape.   8. The inner length according to claim 1, wherein an insertion length of the support bar inserted into the insertion hole is 50 to 70% of a protruding length of the support bar protruding from the ball. 9. Endoscope stand.   The rotation blocking portion extends from the bottom of the insertion hole toward the opening side of the insertion hole, and the rotation blocking portion extends in the depth direction toward the opening side of the insertion hole. The endoscope stand according to any one of claims 1 to 8, wherein an extension length is 15 to 25% of an insertion length of the support rod inserted into the insertion hole.   In the mounting part, the extension length of the mounting part in which the mounting part extends in the depth direction of the insertion hole is 8 to 16% of the insertion length of the support rod inserted into the insertion hole. The endoscope stand according to any one of claims 1 to 9. The ball joint portion includes the ball and a ball receiving portion that receives and presses the ball,
The cover according to any one of claims 1 to 10, further comprising a cover member that is detachably provided on the support bar or the holder part so as to cover the ball and the gap between the ball and the ball receiving part. The endoscope stand according to the item. An endoscope stand for holding an endoscope,
A base part in contact with the floor surface;
A long stand main body erected from the base,
A holder portion that is provided at a distal end portion of the stand main body portion and holds an operation portion of an endoscope that is operated by a practitioner for a surgical operation;
The stand body portion includes a ball joint portion including a ball for freely changing the orientation of the holder portion and a ball receiving portion for receiving and pressing the ball, and the holder portion extending from the ball of the ball joint portion. And a support rod for supporting
The holder part is provided with an insertion hole into which the support bar is inserted,
The insertion hole includes a mounting portion that allows the holder portion to be detachably mounted on the support rod with respect to the axial direction of the support rod,
The endoscope stand includes a cover member that is detachably provided on the support bar or the holder part, covering the ball and a gap between the ball and the ball receiving part so as not to be exposed. A featured endoscope stand. A set of an endoscope and an endoscope stand for holding the endoscope,
The endoscope includes an operation unit operated by a practitioner for a surgical operation,
The endoscope stand is
A base part in contact with the floor surface;
A long stand main body erected from the base,
A holder portion provided at a distal end portion of the stand main body portion and holding the operation portion of the endoscope;
The stand main body part includes a ball joint part including a ball for freely changing the orientation of the holder part, and a support bar that supports the holder part extending from the ball of the ball joint part,
The support bar has an anisotropic cross-section having an anisotropic cross section having anisotropy around the axis of the support bar,
The holder part is provided with an insertion hole into which the support bar is inserted,
The insertion hole prevents the holder portion from rotating around the support rod, and a mounting portion for attaching the holder portion to the support rod so as to be detachable with respect to the axial direction of the support rod. And a rotation blocking portion having an anisotropic hole cross-sectional shape that fits into the anisotropic cross-sectional shape portion.

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