CN218960677U

CN218960677U - Locking mechanism for endoscope and endoscope

Info

Publication number: CN218960677U
Application number: CN202222304069.6U
Authority: CN
Inventors: 韩沁驰; 徐根如
Original assignee: Suzhou Keqin Micro Vision Medical Equipment Co ltd
Current assignee: Suzhou Keqin Micro Vision Medical Equipment Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-05-05
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a locking mechanism for an endoscope and the endoscope. The locking mechanism comprises a first locking component used for locking the first driving plate and/or a second locking component used for locking the second driving plate, wherein the first locking component comprises a knob shell, a first locking disk and a second locking disk, the second locking disk is arranged between the first locking disk and the first driving plate, the knob shell is connected with the first locking disk and synchronously rotates, and the friction force between the second locking disk and the first driving plate is gradually increased along with the rotation of the first locking disk along a preset direction; the second locking assembly comprises a lifting piece and a deflector rod, the lifting piece is positioned between the second driving plate and the deflector rod, and friction force between the lifting piece and the second driving plate is gradually increased along with rotation of the deflector rod along a preset direction. The utility model can realize the locking of the first driving plate and/or the second driving plate and has the advantages of simple structure and convenient operation.

Description

Locking mechanism for endoscope and endoscope

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a locking mechanism for an endoscope and the endoscope with the locking mechanism.

Background

An endoscope is an instrument capable of observing the states of tissues and organs in a human body, and a camera capable of shooting images can be sent to corresponding tissues and organs in the human body through a pipeline so as to observe the states of the tissues and organs in the human body. Currently, endoscopes are equipped with a control mechanism that controls the bending of the bending portion thereof. The bending part is controlled to bend towards a required direction by the control mechanism so as to observe a required position. However, in the conventional endoscope, the control mechanism generally does not have a locking function, and thus the bending portion cannot be kept fixed in a certain direction. Even though some endoscope control mechanisms have lock control, the structure and operation of the control mechanism are relatively complex.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a locking mechanism for an endoscope, which has a simple structure and is convenient to operate.

To achieve the above object, an embodiment of the present utility model provides a locking mechanism for an endoscope including a first locking assembly for locking a first dial and/or a second locking assembly for locking a second dial, wherein,

the first locking assembly comprises a knob shell, a first locking disc and a second locking disc, wherein the second locking disc is arranged between the first locking disc and the first driving plate, the knob shell is connected with the first locking disc and rotates synchronously, and the friction force between the second locking disc and the first driving plate is gradually increased along with the rotation of the first locking disc along a preset direction;

the second locking assembly comprises a lifting piece and a deflector rod, wherein the lifting piece is positioned between the second driving plate and the deflector rod, and the friction force between the lifting piece and the second driving plate is gradually increased along with the rotation of the deflector rod along the preset direction.

In one or more embodiments of the present utility model, a first guiding portion is disposed on an end face of the first locking disc facing the second locking disc, a second guiding portion is disposed on an end face of the second locking disc facing the first locking disc, and cooperation of the first guiding portion and the second guiding portion can enable the first locking disc to drive the second locking disc to move in a direction of the first driving plate in a rotation process.

In one or more embodiments of the present utility model, the first guide portion is a guide slope, the second guide portion is a guide protrusion, or the first guide portion is a guide protrusion, and the second guide portion is a guide slope.

In one or more embodiments of the present utility model, at least one first limiting portion is disposed in the knob housing, and a second limiting portion that cooperates with the first limiting portion to enable the knob housing and the first locking disk to rotate synchronously is disposed on the first locking disk.

In one or more embodiments of the present utility model, the first limiting portion is a limiting groove formed in the knob housing, and the second limiting portion is a limiting protrusion formed on the first locking disc.

In one or more embodiments of the present utility model, a third guiding portion is provided on the lever, and a fourth guiding portion is provided on the lifting member, and cooperation of the third guiding portion and the fourth guiding portion can enable the lifting member to move in the direction of the second driving plate along with rotation of the lever.

In one or more embodiments of the present utility model, the third guide portion is a guide protrusion formed on the lever, the fourth guide portion is a guide slope formed on the lifting member, or the third guide portion is a guide slope formed on the lever, and the fourth guide portion is a guide protrusion formed on the lifting member.

In one or more embodiments of the utility model, an elastic member is provided between the lifting member and the second dial.

In one or more embodiments of the present utility model, a fifth guide portion is provided on the handle housing of the endoscope, and a sixth guide portion is provided on the lifting member to be engaged with the fifth guide portion, and engagement of the fifth guide portion with the sixth guide portion allows the lifting member to be moved only in the axial direction thereof.

The utility model also discloses an endoscope, which comprises the locking mechanism for the endoscope.

Compared with the prior art, according to the locking mechanism for the endoscope, the locking assembly is arranged to lock the first driving plate and/or the second driving plate, so that the bending part of the endoscope is kept unchanged in a certain direction, and the human body organ can be observed conveniently. In addition, the direction control mechanism and the endoscope have the advantages of simple structure and convenient operation.

Drawings

FIG. 1 is a perspective view of an endoscope according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an endoscope in accordance with an embodiment of the present utility model;

FIG. 3 is an exploded view of an endoscope according to an embodiment of the present utility model;

fig. 4 is an exploded view of an endoscope according to an embodiment of the present utility model.

The main reference numerals illustrate:

10-shaft assembly, 11-center shaft, 12-first shaft sleeve, 13-second shaft sleeve, 20-first gear, 30-second gear, 40-first timing belt, 50-second timing belt, 60-first dial, 70-second dial, 80-first locking assembly, 81-knob housing, 82-first locking disc, 82 a-first guide, 83-second locking disc, 83 a-second guide, 90-second locking assembly, 91-toggle, 91 a-third guide, 91 b-third limit, 92-lifter, 92 a-fourth guide, 92 b-sixth guide, a-handle housing, a 1-fifth guide, a 2-fourth limit, b-bolt, c-nut, d-spring.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.

As shown in fig. 1 to 4, a locking mechanism for an endoscope according to a preferred embodiment of the present utility model can realize locking of a first dial and/or a second dial in an endoscope direction control mechanism. Specifically, the endoscope direction control mechanism includes a shaft assembly 10, a first gear 20, a second gear 30, a first timing belt 40, a second timing belt 50, a first dial 60, and a second dial 70. The locking mechanism for an endoscope includes a first locking assembly 80 and a second locking assembly 90, the first locking assembly 80 being operable to effect locking of the first dial 60 and the second locking assembly 90 being operable to effect locking of the second dial 70. Wherein, the liquid crystal display device comprises a liquid crystal display device,

the shaft assembly 10 includes a central shaft 11, a first sleeve 12 and a second sleeve 13. One end of the center shaft 11 is fixed in the handle housing a by a bolt b, and the opposite end extends out of the handle housing a. In this embodiment, the central shaft 11 is made of metal, and has the advantage of high strength. And in order to prevent the center shaft 11 from rotating along its axis, the center shaft 11 is also fitted to the handle housing a by a polygonal fixing member while being fixed to the handle housing a by the bolts b. Further, in the shaft assembly 10, there is a point contact between the first sleeve 12 and the central shaft 11, and there is a point contact between the second sleeve 13 and the first sleeve 12. Since the first sleeve 12 is in surface contact with the center shaft 11 or the second sleeve 13 is in surface contact with the first sleeve 12, abrasion is easily generated during actual operation and resistance is large. Instead, the surface contact is changed into point contact, so that friction and loss can be reduced. In this embodiment, the outer wall of the central shaft 11 protrudes in the radial direction to form a first protruding point, through which the central shaft 11 contacts with the inner wall of the first shaft sleeve 12; the inner wall of the second sleeve 13 protrudes in the radial direction to form a second bump, by means of which the second sleeve 13 is in contact with the outer wall of the first sleeve 12. Of course, in other embodiments, the inner wall of the first shaft sleeve 12 may be protruded to form a first bump along the radial direction, so as to achieve the contact between the first shaft sleeve 12 and the central shaft 11; the outer wall of the first sleeve 12 is protruded in a radial direction to form a second bump to achieve contact between the second sleeve 13 and the first sleeve 12.

The first shaft sleeve 12 is sleeved outside the central shaft 11 and can rotate along the axial direction relative to the central shaft 11; the second sleeve 13 is sleeved outside the first sleeve 12, and can rotate along the axial direction relative to the first sleeve 12.

The first gear 20 is located in the handle housing a and is sleeved outside the central shaft 11, and is connected to the end of the first shaft sleeve 12 located in the handle housing a. The second gear 30 is located in the handle housing a and sleeved outside the first shaft sleeve 12, and is located above the first gear 20, and is connected to the end of the second shaft sleeve 13 located in the handle housing a. In this embodiment, the first gear 20 and the first shaft sleeve 12 are integrally formed, and the second gear 30 and the second shaft sleeve 13 are integrally formed, so that the assembly of parts can be reduced, and the assembly efficiency can be improved.

A first timing belt 40 is located within the handle housing a, disposed around the first gear 20 and engaged with the first gear 20. The first timing belt 40 has a non-closed structure (i.e., a non-loop structure), and both ends thereof are connected to a bending portion of the endoscope by means of a pulling rope 110, respectively. In practice, the first gear 20 rotates to drive the first synchronous belt 40 to move, and the first synchronous belt 40 further drives the traction rope 110 to move, so that the bending portion can be controlled to bend in the first direction or the opposite direction of the first direction through the traction rope 110. A second timing belt 50 is located within the handle housing a, disposed around the second gear 30 and engaged with the second gear 30. The second timing belt 50 is also in a non-closed structure (i.e., a non-loop structure), and both ends thereof are connected to the bending portion by traction ropes 110, respectively. In practice, the second gear 30 drives the second synchronous belt 50 to move when rotating, and the second synchronous belt 50 further drives the traction rope 110 to move, so that the bending portion can be controlled to bend in the second direction or the opposite direction of the second direction by the traction rope 110. The first direction and the second direction may be perpendicular or approximately perpendicular.

The first driving plate 60 is located outside the handle housing a and sleeved outside the central shaft 11, and is connected to an end portion of the first shaft sleeve 12 located outside the handle housing a, and is used for controlling the first gear 20 to rotate through the first shaft sleeve 12, that is, the first gear 20 rotates synchronously with the first driving plate 60. The second driving plate 70 is located outside the handle housing a and sleeved outside the first shaft sleeve 12, and is connected to an end portion of the second shaft sleeve 13 located outside the handle housing a, and is used for controlling the second gear 30 to rotate through the second shaft sleeve 13, that is, the second driving plate 70 rotates synchronously with the second gear 30.

The first locking assembly 80 is used to control the locking of the first dial 60, i.e. the first dial 60 cannot rotate under the action of the first locking assembly 80. The first locking assembly 80 includes a knob housing 81, a first locking plate 82 and a second locking plate 83, the first locking plate 82 is assembled on the central shaft 11 through a nut c, the second locking plate 83 is assembled on the central shaft 11, the second locking plate 83 is disposed between the first locking plate 82 and the first dial 60, the second locking plate 83 is in contact with the first dial 60, and the knob housing 81 is connected with the first locking plate 82 to drive the first locking plate 82 to rotate, i.e., the knob housing 81 and the locking plate 82 rotate synchronously. The friction force between the second locking disc 83 and the first driving plate 60 increases gradually along with the rotation of the first locking disc 82 along the preset direction, in this embodiment, a sealing member (not shown) is arranged between the second locking disc 83 and the first driving plate 60, and in the process that the second locking disc 83 moves downwards, the sealing member is pressed by the second locking disc 83, so that the friction force between the sealing member and the first driving plate 60 increases, and further, the friction force between the second locking disc 83 and the first driving plate 60 increases gradually along with the rotation of the first locking disc 82 along the preset direction. During implementation, the first locking disc 82 is driven to rotate in the rotation process of the locking knob 81, and the second locking disc 83 is driven to continuously move towards the first driving plate 60 in the rotation process of the first locking disc 82, so that the friction force between the second locking disc and the first driving plate 60 is increased along with the rotation of the first locking disc 82 along the preset direction, and finally the first driving plate 60 cannot rotate, so that the locking of the first driving plate 60 is realized.

The second locking assembly 90 is used to control the locking of the second dial 70, i.e. the second dial 70 cannot rotate under the action of the second locking assembly 90. The second locking assembly 90 includes a shift lever 91 and a lifting member 92, the lifting member 92 and the shift lever 91 are both sleeved outside the second sleeve 13, the lifting member 92 is located between the second dial 70 and the shift lever 91, and the friction force between the lifting member 92 and the second dial 70 increases gradually as the shift lever 91 rotates in a preset direction. In practice, the shift lever 91 moves along the preset direction, and the shift lever 91 further drives the lifting member 92 to continuously move toward the second dial 70 and press against the second dial 70. When the lever 91 is rotated into position, the frictional force between the lifter 92 and the second dial 70 is maximized, and the second dial 70 cannot be rotated, thereby achieving locking of the second dial 70.

As shown in fig. 2 to 4, in order to realize that the first lock disk 82 drives the second lock disk 83 to move in the direction of the first dial 60 during rotation. The end face of the first locking disc 82 facing the second locking disc 83 is provided with a first guiding part 82a, the end face of the second locking disc 83 facing the first locking disc 82 is provided with a second guiding part 83a, and the first guiding part 82a and the second guiding part 83a are matched to drive the second locking disc 83 to move towards the first driving plate 60 in the rotation process of the first locking disc 82. In this embodiment, the first guiding portion 82a is a guiding inclined plane, the second guiding portion 83a is a guiding protrusion, or the first guiding portion 82a is a guiding protrusion, and the second guiding portion 83a is a guiding inclined plane, which can be set according to actual requirements.

Further, in order to realize synchronous rotation of the knob housing 81 and the locking disc 82, at least one first limiting portion is provided in the knob housing 81a, and a second limiting portion matched with the first limiting portion is provided on the first locking disc 82. In this embodiment, the first limiting portion is a limiting groove formed in the knob housing 81a, the second limiting portion is a limiting protrusion formed on the first locking disc 82, and the limiting protrusion can be assembled into the limiting groove.

As shown in fig. 2 to 4, in order to enable the lifting member 92 to move continuously in the direction of the second dial 70 during rotation of the lever 91, the lever 91 is provided with a third guide portion 91a, and the lifting member 92 is provided with a fourth guide portion 92a. With the cooperation of the third guide portion 91a and the fourth guide portion 92a, the lifter 92 can be continuously moved in the direction of the second dial 70 with the rotation of the lever 91, so as to increase the friction force therebetween. In this embodiment, the third guiding portion 91a is a guiding protrusion formed on the lever 91, the fourth guiding portion 92a is a guiding inclined plane formed on the lifting member 92, and of course, in other embodiments, the third guiding portion 91a is a guiding inclined plane formed on the lever 91, and the fourth guiding portion 92a is a guiding protrusion formed on the lifting member 92, which can be selected according to practical requirements.

Further, in order to allow the lifting member 92 to be quickly restored or to facilitate its restoration, and to increase the friction between the lifting member 92 and the second dial 70, an elastic member d is provided between the lifting member 92 and the second dial 70. The elastic member d herein includes, but is not limited to, a shrapnel, a spring, and a rubber ring.

As shown in fig. 2 to 4, in order to move the lifter 92 only in the axial direction and not to rotate, a fifth guide portion a1 is provided in the handle housing a of the endoscope, and a sixth guide portion 92b that is engaged with the fifth guide portion a1 is provided in the lifter 92. With the fifth guide portion a1 and the sixth guide portion 92b engaged, it is possible to realize that the lifter 92 can move only in the axial direction thereof and cannot rotate. The fifth guide portion a1 is a guide projection formed on the handle housing a, and the sixth guide portion 92b is a guide groove formed on the lifter 92.

Further, in order to limit the rotation angle of the lever 91, a third limiting portion 91b is provided on the lever 91, and a fourth limiting portion a2 is provided on the handle housing a to be engaged with the third limiting portion 91 b. In this embodiment, the third limiting portion 91b is a protruding portion formed on the lever 91, and the fourth limiting portion a2 is a track groove formed on the handle housing a. In the implementation, the protruding part on the deflector rod 91 is inserted into the track groove of the handle shell a, the protruding part of the deflector rod 91 can be abutted with the groove wall of the track groove after rotating in place, the deflector rod 91 cannot rotate continuously, and further the rotation angle of the deflector rod 91 is limited.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.

Claims

1. A locking mechanism for an endoscope is characterized in that the locking mechanism for an endoscope comprises a first locking component for locking a first driving plate and/or a second locking component for locking a second driving plate, wherein,

2. The locking mechanism for an endoscope according to claim 1, wherein a first guide portion is provided on an end surface of the first locking disk facing the second locking disk, a second guide portion is provided on an end surface of the second locking disk facing the first locking disk, and cooperation of the first guide portion and the second guide portion enables the first locking disk to drive the second locking disk to move in a direction of the first dial in a rotation process.

3. The locking mechanism for an endoscope according to claim 2, wherein the first guide portion is a guide slope, the second guide portion is a guide projection, or the first guide portion is a guide projection, and the second guide portion is a guide slope.

4. The locking mechanism for an endoscope as set forth in claim 1, wherein at least one first limiting portion is provided in the knob housing, and a second limiting portion is provided on the first locking plate, which cooperates with the first limiting portion to allow the knob housing to rotate in synchronization with the first locking plate.

5. The locking mechanism for an endoscope according to claim 4, wherein the first limiting portion is a limiting groove formed in the knob housing, and the second limiting portion is a limiting protrusion formed on the first locking disk.

6. The locking mechanism for an endoscope according to claim 1, wherein the shift lever is provided with a third guide portion, the lifting member is provided with a fourth guide portion, and the engagement of the third guide portion and the fourth guide portion moves the lifting member in the direction of the second dial in response to the rotation of the shift lever.

7. The locking mechanism for an endoscope as defined in claim 6, wherein the third guide portion is a guide projection formed on the lever, the fourth guide portion is a guide slope formed on the lifting member, or the third guide portion is a guide slope formed on the lever, and the fourth guide portion is a guide projection formed on the lifting member.

8. The locking mechanism for an endoscope as described in claim 1, wherein an elastic member is provided between the lifting member and the second dial.

9. The locking mechanism for an endoscope according to claim 1, wherein a fifth guide portion is provided on a handle housing of the endoscope, a sixth guide portion is provided on the lifting member to be engaged with the fifth guide portion, and engagement of the fifth guide portion with the sixth guide portion allows the lifting member to be moved only in an axial direction thereof.

10. An endoscope comprising the lock mechanism for an endoscope according to any one of claims 1 to 9.