CN218792200U

CN218792200U - Medical instrument and bending locking device

Info

Publication number: CN218792200U
Application number: CN202222270204.XU
Authority: CN
Inventors: 张志全; 荆峰; 徐薇
Original assignee: Sonoscape Medical Corp
Current assignee: Sonoscape Medical Corp
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-04-07
Anticipated expiration: 2032-08-26

Abstract

The application discloses a medical instrument and a bending locking device, and relates to the technical field of medical equipment, wherein the bending locking device comprises a winding seat and a winding wheel, an operating wire is wound on the winding wheel and connected with a bending part of the medical instrument, the bending part is pulled to be bent by the operating wire through rotating the winding wheel, an adjusting block, a rotating sheet, a lifting sheet, a friction sheet and a friction block are sequentially arranged between the winding seat and the winding wheel, the lifting sheet, the friction sheet and the friction block can be close to or move away from the winding wheel along the axial direction of the winding wheel, the adjusting block is abutted against the rotating sheet, and the adjusting block is used for adjusting the position of the rotating sheet in the axial direction; the inclined protrusions are respectively arranged on the opposite end faces of the rotating sheet and the lifting sheet, the inclined protrusions of the rotating sheet and the lifting sheet are abutted through rotation of the rotating sheet, so that the lifting sheet, the friction block and the winding wheel are abutted in sequence to fix the rotation movement of the winding wheel through friction force. Above-mentioned crooked locking device can solve the winding wheel and fix insecure problem.

Description

Medical instrument and bending locking device

Technical Field

The application relates to the technical field of medical equipment, in particular to a medical instrument and a bending locking device.

Background

Endoscopes, which are invasive instruments among medical instruments, are used by inserting an insertion body of the endoscope into a diseased part inside a human body to perform observation and treatment.

For practical purposes, the insertion body should have a bending portion capable of being flexibly bent, and the bending portion should be maintained in a specific state to achieve a corresponding purpose.

Obviously, in order to ensure that the bending portion is maintained in a specific bending state, the winding wheel needs to be fixed, in the prior art, the fixing manner of the winding wheel is often realized through gear engagement, for example, the winding wheel and the pressing member are in gear engagement, when the pressing member is stationary, the winding wheel is controlled to stop rotating, however, a certain gap exists between the engaged gears, although the pressing member is kept in the stationary state, the winding wheel can still rotate within a certain range, and thus the bending state of the bending portion is changed, and the use effect is affected.

On this basis, how to improve the fixing reliability of the winding wheel is a technical problem that needs to be considered by the skilled person.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to provide a medical instrument and a bending lock device which can solve the problem of unreliable fixation of the winding wheel.

To achieve the above object, the present application provides a bending locking device, which comprises a winding seat and a winding wheel, wherein the winding wheel is rotatably disposed on the winding seat, the winding wheel is wound with an operating wire, the distal end of the operating wire is used for connecting with a bending portion of a medical instrument, the bending portion is pulled by the operating wire to bend by rotating the winding wheel,

the winding device comprises a winding seat, a winding wheel, a winding seat, a winding plate, a lifting plate, a friction plate and a friction block, wherein the winding seat is arranged on the winding wheel;

the inclined protrusions are respectively arranged on the opposite end faces of the rotating sheet and the lifting sheet and extend obliquely along the rotating direction of the rotating sheet, the inclined protrusions abut against the rotating sheet and the lifting sheet to drive the lifting sheet to move close to the friction sheet along the axial direction, so that the lifting sheet, the friction block and the winding wheel abut against each other in sequence, and the friction force is used for fixing the rotary motion of the winding wheel.

In some embodiments, the winding seat is provided with a limiting adjusting hole, the adjusting block is provided with a sunken groove matched with the position of the limiting adjusting hole, a limiting part is arranged in the sunken groove, one end of the limiting part penetrates through the limiting adjusting hole, and the limiting part is moved in the axial direction to drive the adjusting block to move close to or away from the rotating sheet in the axial direction. In some embodiments, the lifting piece and the friction piece are circumferentially provided with extending bodies, the winding seat is provided with limiting slideways, the limiting slideways extend along the axial direction of the winding wheel, and the extending bodies are slidably arranged in the limiting slideways.

In some embodiments, the winding seat is provided with a spindle hole, one end of the winding seat is provided with a spindle bushing, the spindle bushing and the adjusting block are respectively located at two ends of the winding seat, a spindle is rotatably connected in the spindle hole and the spindle bushing, the adjusting block, the rotating plate, the lifting plate, the friction plate and the friction block are respectively provided with a through hole through which the spindle can penetrate, one end of the spindle is connected with the winding wheel, and the other end of the spindle penetrates through the spindle hole and then is sleeved in the spindle bushing. In some embodiments, the spindle bushing includes a disk body and an axial extension body connected to each other, the disk body is disposed on the winding base, the disk body and the axial extension body are provided with coaxial holes for the spindle sleeve to be disposed, a limit pin is circumferentially disposed at an end portion of the spindle sleeve disposed in the axial extension body, a sliding groove is circumferentially disposed on the axial extension body, and one end of the limit pin extends out of the axial extension body through the sliding groove.

In some embodiments, the end surface of the winding seat facing away from the winding wheel is provided with two limiting clamping seats, the two limiting clamping seats are arranged around the axial extension body, one end of the limiting pin extending out of the axial extension body is located between the two limiting clamping seats, and the two limiting clamping seats are used for limiting the rotation angle of the limiting pin. In some embodiments, the winding seat and the disk body are provided with coaxial mounting holes, a fastening piece is arranged in each mounting hole to enable the winding seat to be connected with the disk body, each fastening piece is provided with an end penetrating through the corresponding mounting hole, each end is located between the corresponding winding seat and the corresponding adjusting block, each adjusting block is provided with an avoiding groove, each avoiding groove is arranged towards the corresponding winding seat, and the projection surface of each avoiding groove on the corresponding winding seat in the axial direction covers the corresponding end, so that the avoiding grooves avoid the ends. In some embodiments, the winding device further comprises a seat cover connected with the winding seat, the winding seat is provided with an axial boss, a mounting piece is arranged on part of the seat cover in the circumferential direction, and the mounting piece is connected with the axial boss to form a containing cavity for containing the adjusting block, the rotating piece, the lifting piece, the friction block and the winding wheel.

In some embodiments, the winding seat is provided with a poking rod hole, the rotation axis of the poking rod hole deviates from the rotation axis of the rotating sheet, a poking rod is rotatably arranged in the poking rod hole, the end, facing the winding wheel, of the poking rod is provided with an eccentric clamping column, the adjusting block is provided with a notch avoiding the eccentric clamping column, the rotating sheet is provided with a connecting hole rotatably connected with the eccentric clamping column, and the poking rod deviates from the end of the winding wheel through rotation so that the rotating sheet rotates.

The application also provides a medical instrument comprising the bending and locking device.

For above-mentioned background, the crooked locking device that this application embodiment provided, be equipped with the regulating block between coiling seat and coiling wheel in proper order, the rotor plate, the lifting piece, friction disc and clutch blocks, it is rotatory through the control rotor plate, the protruding butt of slope between rotor plate and the lifting piece, thereby the axial of drive lifting piece along the coiling wheel deviates from the rotor plate and moves, move towards the friction disc along the axial of coiling wheel promptly, the lifting piece supports holds and drives the friction disc and move, the friction disc supports and drives the clutch blocks and moves, can drive friction disc and clutch blocks in proper order like this and move along the direction of orientation coiling wheel, until the clutch blocks support and hold the coiling wheel, utilize frictional force to fix the coiling wheel. In addition, the adjusting block is abutted with the rotating sheet, the position of the rotating sheet in the axial direction of the winding wheel can be adjusted through the adjusting block, and the lifting sheet, the friction sheet and the friction block can move close to or depart from the winding wheel along the axial direction of the winding wheel, so that the initial gap and the pre-pressure between the friction sheet and the friction block can be adjusted, the application universality is improved, it can be seen that the friction sheet and the friction block are arranged between the lifting sheet and the winding wheel, the friction area is increased, the friction force can be obviously improved, the friction failure phenomenon is avoided to the maximum extent, therefore, the winding wheel is fixed and reliable under the abutting action of the friction block, the winding wheel is prevented from rotating, the current bending state of the inserting body is ensured, and the use reliability is improved.

The medical instrument comprising the bending and locking device provided by the embodiment of the application has the beneficial effects that the bending and locking device is not unfolded.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of an angle of a bend lock mechanism provided in accordance with an embodiment of the present application;

FIG. 2 is a schematic view of another angle of the bend lock apparatus provided in accordance with an embodiment of the present application;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an exploded view of a buckle latch provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic view of a rotating blade of a buckle latch provided in accordance with an embodiment of the present application;

FIG. 6 is a schematic view of a lift tab of a buckle latch according to an embodiment of the present application;

FIG. 7 is a schematic view of a winding nest of a buckle latch provided in an embodiment of the present application;

FIG. 8 is a schematic view of an adjustment block of the buckle latch provided in an embodiment of the present application;

FIG. 9 is a schematic view of a spindle bushing of a bend locking apparatus provided in an embodiment of the present application;

wherein:

a winding seat 10, an adjusting limit hole 101, a limit slideway 102, a spindle hole 103, a limit clamping seat 104, an adjusting groove 1041, an axial boss 105, a deflector rod hole 106, a positioning hole 107, a positioning groove,

A winding wheel 20, an operating wire 201,

An adjusting block 30, a sinking groove 301, a limiting part 3011, an avoiding groove 302, a notch 303,

A rotating piece 40, a connecting hole 401,

A lifting piece 50,

A friction plate 60,

A friction block 70,

Spindle bushing 80, disk 801, fitting hole 8011, axial extension 802, slide groove 8021, coaxial hole 803, and fitting hole,

A main shaft 90, a limit pin 91,

Seat cover 100, mounting piece 1001,

A main shaft sleeve 110,

A shift lever 120, an eccentric clamping column 1201,

A toggle rod shaft sleeve 130,

An inclined bulge 01,

An extension body 02,

A through hole 03,

A mounting hole 04,

Fastener 05,

A first locking piece 06,

A second locking piece 07,

And a third locking member 08.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 3, the bending locking device includes a winding seat 10 and a winding wheel 20, the winding seat 10 can be regarded as an installation reference, the winding wheel 20 is installed on the winding seat 10, the winding wheel 20 can rotate relative to the winding seat 10, an operating wire 201 is wound on the winding wheel 20, a distal end of the operating wire 201 is connected with a bending portion of a medical instrument, when the winding wheel 20 rotates, the operating wire 201 moves synchronously with the winding wheel 20, and the bending portion is pulled to be bent by the operating wire 201, so that different positions inside a human body can be observed or treated.

Referring to fig. 3 and 4, an adjusting block 30, a rotating plate 40, a lifting plate 50, a friction plate 60 and a friction block 70 are sequentially arranged between the winding seat 10 and the winding wheel 20, the adjusting block 30 is arranged adjacent to the winding seat 10, and the friction block 70 is arranged adjacent to the winding wheel 20, so that the axial directions of the winding seat 10, the winding wheel 20, the adjusting block 30, the rotating plate 40, the lifting plate 50, the friction plate 60 and the friction block 70 are considered to be the same direction, and the axial axes are the same straight line.

The adjusting block 30 abuts against the rotating plate 40, and the axial position of the rotating plate 40 is adjusted by the adjusting block 30, for example, when the adjusting block 30 abuts against the rotating plate 40 and the adjusting block 30 moves close to the winding wheel 20 along the axial direction of the winding wheel 20, the adjusting block 30 drives the rotating plate 40 to move close to the winding wheel 20, and then can sequentially drive the lifting plate 50, the friction plate 60 and the friction block 70 to move close to the winding wheel 20, so that the initial gaps and the pre-pressure among the rotating plate 40, the lifting plate 50, the friction plate 60 and the friction block 70 can be adjusted.

Referring to fig. 5 and 6 together, the end surfaces of the rotating plate 40 and the lifting plate 50 are provided with inclined protrusions 01, and the heights of the inclined protrusions 01 gradually increase along the rotating direction of the rotating plate 40, that is, one ends of the inclined protrusions 01 gradually incline to the other ends of the inclined protrusions 01 along the axial direction of the winding wheel 20 while the inclined protrusions 01 extend along the rotating direction of the rotating plate 40; here, since the rotating piece 40 rotates around the axis of the winding wheel 20, the rotating direction of the rotating piece 40 is in an arc shape, the inclined protrusion 01 is provided in an arc-shaped strip shape, and both ends of the inclined protrusion 01 are both ends of the rotating piece 40 in the rotating direction, respectively. When the rotating plate 40 is rotated, the inclined protrusions 01 of the rotating plate 40 and the lifting plate 50 are abutted, so that the axial distance between the rotating plate 40 and the lifting plate 50 is gradually increased, and because the rotating plate 40 is abutted by the adjusting block 30, the rotating plate 40 cannot move towards the adjusting block 30, so that the lifting plate 50 can only move towards the winding wheel 20, and thus, the lifting plate 50 abuts against the friction plate 60 and drives the friction plate 60 to move towards the winding wheel 20, the friction plate 60 abuts against the friction block 70 and drives the friction block 70 to move towards the winding wheel 20, finally, the friction block 70 abuts against the winding wheel 20, and the winding wheel 20 is fixed by using friction force.

It can be seen that, under the rotation action of the rotating plate 40, the lifting plate 50, the friction plate 60 and the friction block 70 are sequentially driven to move towards the winding wheel 20, and based on the arrangement mode of the inclined protrusion 01, the rotation motion of the rotating plate 40 is converted into a linear motion along the axis direction, so that the winding wheel 20 is supported and fixed, the bending part is further ensured to keep the current bending state, and the bending locking effect of the medical apparatus is realized.

The rotating sheet 40 and the lifting sheet 50 can be made of metal specifically, the inclined protrusion 01 can be made of a punch forming mode, the friction sheet 60 and the winding wheel 20 can also be made of metal, the adjusting block 30 and the friction block 70 can be made of resin specifically, the friction sheet 60 and the friction block 70 are arranged between the lifting sheet 50 and the winding wheel 20, the friction sheet 60 and the friction block 70 are made of different materials, the friction performance of the resin material is superior to that of the metal, namely the friction performance of the friction block 70 is superior to that of the friction sheet 60, the friction block 70 is used for abutting and fixing the winding wheel 20, so that large abnormal sound is avoided when the winding wheel 20 is abutted, and the phenomena of friction force reduction and the like caused by material fatigue are reduced; meanwhile, since the lifting plate 50 and the inclined protrusion 01 of the rotating plate 40 need to be matched with each other, the thickness of the lifting plate 50 is not suitable for being thicker, so that the friction plate 60 can play a role of thickening the lifting plate 50, and if the lifting plate 50 is directly utilized to be in contact with the friction block 70, the friction block 70 is easily deformed, so that friction failure is caused, and the purpose of fixing the winding wheel 20 cannot be realized; of course, the lifting piece 50 and the winding wheel 20 cannot be directly contacted, and since both are made of metal, large area of the same material will generate great abnormal sound after contacting, thereby reducing reliability. Therefore, the friction plate 60 and the friction block 70 are arranged between the winding wheel 20 and the lifting plate 50, so that the friction failure phenomenon can be avoided to the maximum extent, and the use reliability is obviously improved.

Referring to fig. 7 and 8 together, the winding seat 10 is provided with an adjustment limiting hole 101, the adjustment limiting hole 101 penetrates through an end surface of the winding seat 10, an end surface of the adjusting block 30 facing the winding seat 10 is provided with a sinking groove 301, the sinking groove 301 and the adjustment limiting hole 101 can be coaxially arranged, a limiting piece 3011 is arranged in the sinking groove 301 and the adjustment limiting hole 101, one end of the limiting piece 3011 penetrates through the adjustment limiting hole 101 and then abuts against the sinking groove 301, and the abutting force of the limiting piece 3011 against the sinking groove 301 can be increased and decreased by adjusting the axial position of the limiting piece 3011 in the adjustment limiting hole 101, so that the adjusting block 30 is driven to move close to or away from the rotating plate 40 along the axial direction of the winding wheel 20, and the initial gap and the pre-pressure between the adjusting block 30, the rotating plate 40, the lifting plate 50, the friction plate 60 and the friction plate 70 are adjusted.

In some embodiments, the adjustment limiting hole 101 may be specifically a threaded hole, the limiting piece 3011 is configured as a bolt, and by screwing or loosening the limiting piece 3011, the axial position of the limiting piece 3011 in the adjustment limiting hole 101 changes, so that the axial position of the adjusting block 30 is adjusted by using the limiting piece 3011, and the initial gap and the pre-pressure between the adjusting block 30, the rotating plate 40, the lifting plate 50, the friction plate 60, and the friction block 70 are changed.

In addition, a certain damping force can be provided between the adjusting limiting hole 101 and the limiting piece 3011, that is, the limiting piece 3011 can be maintained in any axial direction relative to the adjusting limiting hole 101, and when the axial position of the limiting piece 3011 needs to be adjusted, a certain acting force needs to be applied to the limiting piece 3011, where the acting force is greater than the damping force between the adjusting limiting hole 101 and the limiting piece 3011, so that the above technical effects can also be achieved.

With continued reference to fig. 4, 6 and 7, the lifting plate 50 and the friction plate 60 are circumferentially provided with extending bodies 02, the extending bodies 02 extend outward along respective radial directions, the winding seat 10 is provided with limiting slideways 102, the limiting slideways 102 are arranged on the circumferential inner side of the winding seat 10, the limiting slideways 102 extend along the axial direction of the winding wheel 20, and the extending bodies 02 of the lifting plate 50 and the friction plate 60 are slidably arranged in the limiting slideways 102.

In some embodiments, the winding seat 10 is provided with an axial boss 105, the limiting slide 102 is arranged on the circumferential inner side of the axial boss 105, one end of the limiting slide 102 facing the winding wheel 20 extends to the outer end face of the axial boss 105, one end of the limiting slide 102 facing away from the winding wheel 20 and the axial boss 105 form a step structure, the lifting plate 50 and the extending body 02 of the friction plate 60 are located in the limiting slide 102, the lifting plate 50 and the extending body 02 of the friction plate 60 are limited by the limiting slide 102 and cannot encroach on the space where the adjusting block 30 and the rotating plate 40 are located, so that the relative positions of the parts can be ensured to be reliable, meanwhile, both the lifting plate 50 and the friction plate 60 are limited by the limiting slide 102, and under the rotating action of the rotating plate 40, the lifting plate 50 and the friction plate 60 only move along the extending direction of the limiting slide 102, and the lifting plate 50 and the friction plate 60 are prevented from being skewed in the moving process; referring to fig. 6-7, the limiting slide 102 and the corresponding extending body 02 may be provided in several pairs, so as to ensure reliable movement of the lifting plate 50 and the friction plate 60, and improve the fixing reliability of the winding wheel 20.

With reference to fig. 4 to 8, a main shaft hole 103 is formed in the winding seat 10, the main shaft hole 103 penetrates through the thickness direction of the winding seat 10, a main shaft bushing 80 is disposed on an end surface of the main shaft hole 103 away from the winding wheel 20, the main shaft bushing 80 is disposed at one end of the winding seat 10, a main shaft 90 is rotatably connected in the main shaft bushing 80 and the main shaft hole 103, a through hole 03 is formed in the adjusting block 30, the rotating plate 40, the lifting plate 50, the friction plate 60 and the friction block 70, one end of the main shaft 90 is connected to the winding wheel 20 after sequentially penetrating through the through holes 03 of the adjusting block 30, the rotating plate 40, the lifting plate 50, the friction plate 60 and the friction block 70, the other end of the main shaft 90 is sleeved in the main shaft bushing 80 after penetrating through the main shaft hole 103, and the winding wheel 20 and the main shaft 90 can be connected through a first locking member 06.

The main shaft bushing 80 is fixedly connected with the winding seat 10, the main shaft bushing 80 can ensure that the main shaft 90 rotates stably, and meanwhile, the winding wheel 20 is driven to rotate along with the main shaft 90 under the rotating action of the main shaft 90, so that the reliable rotation of the winding wheel 20 can be ensured, and the accuracy of controlling the bending of the insert body is improved.

Referring to fig. 9, the spindle bushing 80 includes a disk body 801 and an axial extension body 802, the disk body 801 and the axial extension body 802 are connected to each other, the disk body 801 and the axial extension body 802 may be integrally disposed, the disk body 801 and the axial extension body 802 are provided with a coaxial hole 803, the spindle 90 is sleeved in the coaxial hole 803, an end of the spindle 90 away from the winding wheel 20 is sleeved in the axial extension body 802, a limit pin 91 is circumferentially disposed at an end of the spindle 90 located in the axial extension body 802, a sliding slot 8021 is circumferentially disposed on the axial extension body 802, and one end of the limit pin 91 extends out of the axial extension body 802 through the sliding slot 8021.

Referring to fig. 2, the stop pin 91 is located outside the main shaft bushing 80, the main shaft 90 and the stop pin 91 can rotate synchronously, and the rotation angle of the main shaft 90 can be determined by setting the position of the stop pin 91, so as to determine the bending degree of the bending portion. Meanwhile, the two ends of the sliding slot 8021 can limit the position of the limit pin 91, so as to avoid the main shaft 90 from over-rotating.

Further, the winding seat 10 may further include two limiting clamping seats 104, the two limiting clamping seats 104 are disposed on the end surface of the winding seat 10, the limiting clamping seats 104 and the adjusting block 30 are respectively located at two ends of the winding wheel 20, the two limiting clamping seats 104 are enclosed in the circumferential direction of the axial extending body 802, one end of the limiting pin 91 is located between the two limiting clamping seats 104, the rotating position of the limiting pin 91 is limited by the two limiting clamping seats 104, so as to limit the rotating angle of the main shaft 90, and further limit the bending degree of the bending portion.

The relative positions of the two spacing cartridges 104 may also be adjusted, for example: the limiting clamping seat 104 is provided with an adjusting groove 1041, the winding seat 10 is provided with a positioning hole 107, the disc body 801 is provided with an adapting hole 8011, the positioning hole 107 and the adapting hole 8011 are coaxially arranged, the second locking part 07 is fastened to the adapting hole 8011 and the positioning hole 107 through the adjusting groove 1041, when the end of the second locking part 07 abuts against the end face of the adjusting groove 1041, the body of the second locking part 07 is fastened to the adapting hole 8011 and the positioning hole 107, at the moment, the limiting clamping seat 104 is fixed relative to the winding seat 10, when the second locking part 07 is loosened, the end of the second locking part 07 is separated from the end face of the adjusting groove 1041, and by moving the limiting clamping seat 104, the position of the second locking part 07 relative to the adjusting groove 1041 can be changed, so that the position of the limiting clamping seat 104 can be adjusted.

Referring to fig. 8 and 9, both the winding base 10 and the plate 801 may have mounting holes 04, and the plate 801 may be connected to the winding base 10 by fastening members 05 such as bolts, the fastening members 05 have ends penetrating the mounting holes 04, for example, the heads of the bolts abut against the plate 801, the ends of the bolts sequentially penetrate the two mounting holes 04 and are locked, and the ends of the bolts are located between the winding base 10 and the adjusting block 30, so as to ensure the reliable mounting and fixing of the winding base 10 and the plate 801.

The end face of the adjusting block 30 is provided with an avoiding groove 302, the avoiding groove 302 is arranged towards the winding seat 10, the end of the fastening piece 05 is covered by the avoiding groove 302 along the projection surface of the winding wheel 20 on the winding seat 10 in the axial direction, and the end is avoided by the avoiding groove 302. Obviously, the distance between the bottom of the avoiding groove 302 and the winding seat 10 should be greater than the length of the end of the fastener 05 extending out of the winding seat 10, so as to ensure that the fastener 05 is prevented from being interfered by the adjusting block 30 on the premise of firmly installing the disc body 801 and the winding seat 10. It can be seen that in order to avoid the fastener 05, an avoiding groove 302 is provided on the end surface of the adjusting block 30, so that the winding seat 10 and the spindle bushing 80 can be connected by the fastener 05, and the axial distance between the adjusting block 30 and the winding seat 10 is prevented from being too far, thereby increasing the volume.

With continued reference to fig. 1 to 4, the winding seat 10 is further connected to a seat cover 100, the winding seat 10 is provided with an axial boss 105, a mounting plate 1001 is disposed on a partial circumference of the seat cover 100, the mounting plate 1001 and the axial boss 105 may be connected by a third locking member 08, the winding seat 10 and the seat cover 100 form an accommodating cavity, the winding wheel 20, the adjusting block 30, the rotating plate 40, the lifting plate 50, the friction plate 60 and the friction block 70 are located in the accommodating cavity, and the operating wire 201 wound on the winding wheel 20 extends out of the accommodating cavity.

The winding base 10 and the base cover 100 form a semi-closed structure, so that each part is protected to the maximum extent from external interference, stable operation is ensured, and meanwhile, the operating wire 201 extends out of the accommodating cavity and is used for being connected with an inserting body.

With reference to fig. 2 to fig. 4, a spindle sleeve 110 may be further disposed on the periphery of the spindle hole 103 of the winding seat 10, the spindle sleeve 110 is disposed on the winding seat 10, the spindle sleeve 110 is disposed in the through hole 03 of the adjusting block 30, the rotating plate 40, the lifting plate 50, the friction plate 60, and the friction block 70, the spindle 90 is sleeved in the spindle sleeve 110, and the spindle 90 is capable of rotating relative to the spindle sleeve 110.

It can be seen that the spindle bushing 80 and the spindle sleeve 110 are respectively disposed at two ends of the winding base 10, and different axial positions of the spindle 90 are respectively sleeved in the spindle bushing 80 and the spindle sleeve 110, so that the reliable rotation of the spindle 90 can be ensured to the maximum extent, the spindle 90 is prevented from inclining in the rotation process, the rotation angle of the winding wheel 20 can be accurately controlled, and the accuracy of the insert bending control is further improved.

In some embodiments, the winding seat 10 may further be provided with a poking rod hole 106, the poking rod hole 106 is arranged through the thickness direction of the winding seat 10, and the rotation axis of the poking rod hole 106 is offset from the rotation axis of the rotating sheet 40, i.e. the rotation axis of the poking rod hole 106 and the rotation axis of the rotating sheet 40 are not collinear.

The poking rod 120 is rotatably arranged in the poking rod hole 106, two ends of the poking rod 120 are respectively located at two ends of the winding wheel 20, an eccentric clamping column 1201 is arranged at the end part, facing the winding wheel 20, of the poking rod 120, the adjusting block 30 is provided with a notch 303 avoiding the eccentric clamping column 1201, the rotating sheet 40 is provided with a connecting hole 401 rotatably connected with the eccentric clamping column 1201, and the poking rod 120 is rotated to deviate from the end part of the winding wheel 20 so that the rotating sheet 40 rotates.

When the winding wheel is used, after the angle of the winding wheel 20 is adjusted through the rotating main shaft 90, the bending degree of the inserted body meets the requirement, the poking rod 120 is rotated, so that the poking rod 120 drives the rotating sheet 40 to rotate, the lifting sheet 50, the friction sheet 60 and the friction block 70 are driven to move towards the winding wheel 20, and after the friction block 70 and the winding wheel 20 are abutted, locked and fixed, the winding wheel 20 cannot rotate, namely, the inserted body can be kept in the current bending state.

Referring to fig. 2, the winding base 10 is provided with a lever shaft sleeve 130, the lever shaft sleeve 130 is located at the periphery of the lever hole 106, the lever shaft sleeve 130 is located at an end surface of the winding base 10 facing away from the winding wheel 20, the lever 120 is sleeved in the lever shaft sleeve 130, an end of the lever 120 facing away from the winding wheel 20 extends out of the lever shaft sleeve 130, and the lever 120 can rotate relative to the lever shaft sleeve 130; by rotating the shift lever 120, the shift lever 120 drives the rotation piece 40 to rotate, so that the inclined protrusion 01 of the rotation piece 40 and the inclined protrusion 01 of the lifting piece 50 abut against each other, the lifting piece 50 is pushed towards the winding wheel 20, and the friction block 70 abuts against and fixes the winding wheel 20.

The embodiment of the present application further provides a medical apparatus, which includes the above bending locking device, the medical apparatus further includes a bending portion (not shown in the figure), the bending portion can be bent, the bending portion can be disposed on an insertion body of the medical apparatus, the insertion body is used for being inserted into a human body, under the bending action of the bending portion, an end portion of the insertion body can observe and treat a patient, the bending portion is connected with a distal end of the above operation wire 201, and the operation wire 201 pulls the bending portion to be bent by rotating the winding wheel 20; the medical instrument may be embodied as an endoscope, and the detailed construction of the medical instrument is described with reference to the prior art and will not be expanded herein. It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The medical instrument and the bend locking device provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.

Claims

1. A bending locking device comprises a winding seat (10) and a winding wheel (20), wherein the winding wheel (20) is rotatably arranged on the winding seat (10), an operating wire (201) is wound on the winding wheel (20), the distal end of the operating wire (201) is used for connecting a bending part of a medical instrument, and the operating wire (201) pulls the bending part to be bent by rotating the winding wheel (20),

an adjusting block (30), a rotating sheet (40), a lifting sheet (50), a friction sheet (60) and a friction block (70) are sequentially arranged between the winding seat (10) and the winding wheel (20), the lifting sheet (50), the friction sheet (60) and the friction block (70) can move close to or away from the winding wheel (20) along the axial direction of the winding wheel (20), the adjusting block (30) is abutted against the rotating sheet (40), and the adjusting block (30) is used for adjusting the position of the rotating sheet (40) in the axial direction;

the utility model discloses a take-up reel, including rotation piece (40), lifting piece (50), rotation piece (50) and rotation piece (60), be equipped with the inclined protrusion (01) of position adaptation on the relative terminal surface between them respectively, inclined protrusion (01) are followed the direction of rotation slope of rotation piece (40) is extended, through the rotation piece (40), rotation piece (40) with lifting piece (50) between them inclined protrusion (01) butt is in order to drive lifting piece (50) are followed the axial is close to friction disc (60) removes, makes lifting piece (50), friction disc (60) friction block (70) with coiling wheel (20) butt in proper order to frictional force is fixed the rotary motion of coiling wheel (20).

2. The bending locking device according to claim 1, wherein the winding seat (10) is provided with an adjusting limiting hole (101), the adjusting block (30) is provided with a sinking groove (301) matched with the adjusting limiting hole (101) in position, a limiting piece (3011) is arranged in the sinking groove (301), one end of the limiting piece (3011) penetrates through the adjusting limiting hole (101), and the limiting piece (3011) is moved along the axial direction to drive the adjusting block (30) to move close to or away from the rotating piece (40) along the axial direction.

3. The buckle locking device according to claim 1, characterized in that the lifting plate (50) and the friction plate (60) are provided with extension bodies (02) in the circumferential direction, the winding seat (10) is provided with a limiting slideway (102), the limiting slideway (102) extends along the axial direction of the winding wheel (20), and the extension bodies (02) are slidably arranged in the limiting slideway (102).

4. The bending and locking device according to any one of claims 1 to 3, wherein the winding seat (10) is provided with a spindle hole (103), one end of the winding seat (10) is provided with a spindle bushing (80), the spindle bushing (80) and the adjusting block (30) are respectively located at two ends of the winding seat (10), the spindle hole (103) and the spindle bushing (80) are rotatably connected with a spindle (90), the adjusting block (30), the rotating plate (40), the lifting plate (50), the friction plate (60) and the friction block (70) are respectively provided with a through hole (03) through which the spindle (90) can be inserted, one end of the spindle (90) is connected with the winding wheel (20), and the other end of the spindle (90) is inserted into the spindle hole (103) and then is sleeved in the spindle bushing (80).

5. The bending locking device according to claim 4, wherein the spindle bushing (80) comprises a disc body (801) and an axial extension body (802) which are connected with each other, the disc body (801) is arranged on the winding seat (10), the disc body (801) and the axial extension body (802) are provided with coaxial holes (803) for the spindle (90) to be sleeved, the spindle (90) is sleeved in the axial extension body (802), a limit pin (91) is circumferentially arranged at an end portion of the spindle (90) in the axial extension body (802), a sliding groove (8021) is circumferentially arranged on the axial extension body (802), and one end of the limit pin (91) extends out of the axial extension body (802) through the sliding groove (8021).

6. A bending locking device according to claim 5, wherein the end surface of the winding seat (10) facing away from the winding wheel (20) is provided with two limiting clamping seats (104), the two limiting clamping seats (104) are arranged around the axial extension body (802) in the circumferential direction, one end of the limiting pin (91) extending out of the axial extension body (802) is located between the two limiting clamping seats (104), and the two limiting clamping seats (104) are used for limiting the rotation angle of the limiting pin (91).

7. The bending locking device according to claim 5, wherein the winding seat (10) and the disc body (801) are provided with coaxial mounting holes (04), a fastener (05) is arranged in the mounting hole (04) so that the winding seat (10) and the disc body (801) are connected, the fastener (05) has an end penetrating through the mounting hole (04), the end is located between the winding seat (10) and the adjusting block (30), the adjusting block (30) is provided with an avoiding groove (302), the avoiding groove (302) is arranged towards the winding seat (10), the avoiding groove (302) covers the end along a projection surface of the axial direction on the winding seat (10) so that the avoiding groove (302) avoids the end.

8. A buckle lock device according to any one of claims 1 to 3, further comprising a cover (100) connected to the winding base (10), wherein the winding base (10) is provided with an axial projection (105), a mounting plate (1001) is provided on a part of the circumference of the cover (100), and the mounting plate (1001) is connected to the axial projection (105) to form a receiving cavity for receiving the adjusting block (30), the rotating plate (40), the lifting plate (50), the friction plate (60), the friction block (70) and the winding wheel (20).

9. The buckle-locking device according to any one of claims 1 to 3, characterized in that the winding seat (10) is provided with a toggle rod hole (106), the rotation axis of the toggle rod hole (106) is offset from the rotation axis of the rotary plate (40), a toggle rod (120) is rotatably provided in the toggle rod hole (106), the end of the toggle rod (120) facing the winding wheel (20) is provided with an eccentric clamping column (1201), the adjusting block (30) is provided with a notch (303) avoiding the eccentric clamping column (1201), the rotary plate (40) is provided with a connecting hole (401) rotatably connected with the eccentric clamping column (1201), and the rotary plate (40) is rotated by rotating the end of the toggle rod (120) away from the winding wheel (20).

10. A medical device comprising a bend locking device as claimed in any one of claims 1 to 9.