Bending angle adjusting jig for endoscope

Abstract

The utility model relates to the technical field of medical instruments, in particular to an endoscope bending angle adjusting jig. The endoscope bending angle adjusting jig comprises a fixing base used for fixing an endoscope handle, a sliding block arranged on the fixing base in a sliding mode and a locking piece used for locking the sliding block on the fixing base. A rotating hub is rotationally arranged in the endoscope handle, and at least one traction rope is wound on each of the two sides of the rotating hub; and one end of any pulling rope can be locked on the sliding block. According to the endoscope bending angle adjusting jig, the assembling size error and the part size error can be neglected, the bending part of the endoscope can be accurately adjusted to the required angle, and therefore the consistency and the yield of products and the assembling efficiency of the products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an endoscope bending angle adjustment fixture. Background Art

[0002] The disposable medical endoscope is mainly composed of a bending part and a handle part; the bending part includes a snake bone, the front end of which contains a camera and an LED light or a fiber optic light guide, and the handle part contains a rotating hub and a push handle; at least one steel wire rope is inserted into each side of the snake bone, and the other end of the steel wire rope is wound around the rotating hub of the handle part and fixed, and the rotating hub is rotated by the push handle to pull the steel wire rope to achieve the bending of the snake bone. The tightness of the steel wire rope directly affects the accuracy of the bending angle of the snake bone. Therefore, during the assembly process of the endoscope, it is crucial to adjust the steel wire rope so that the steel wire rope is at a suitable tightness after installation, which is crucial to the bending accuracy of the bending part of the endoscope.

[0003] There are two main ways to adjust the bending angle in the prior art during the assembly of the endoscope; the first way is to adjust the angle by tightening the steel wire with pliers. This method is inconvenient to operate and can easily cause hand fatigue and the problem of the steel wire being pinched off, and the product has a large bending angle error and poor consistency; the second way is to measure the length of the steel wire with a jig, and then clamp the steel wire at a fixed position with an aluminum sleeve, and then fix the aluminum sleeve on the winding reel. Although this method can save labor, it is easily affected by the assembly and size errors of parts, resulting in errors in the bending angle, and there is still a problem of poor consistency. Utility Model Content

[0004] The utility model aims to provide an endoscope bending angle adjustment jig to solve the technical problems of low efficiency, large error and poor consistency in the prior art when adjusting the bending angle accuracy of the endoscope.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An endoscope bending angle adjustment jig comprises a fixing seat for fixing the endoscope handle, a slider slidably arranged on the fixing seat, and a locking member for locking the slider on the fixing seat;

[0007] A rotating hub is rotatably arranged inside the endoscope handle, and at least one traction rope is respectively wound around two sides of the rotating hub; one end of any one of the traction ropes can be locked on the sliding block.

[0008] Furthermore, the fixing seat includes a main supporting platform and a movable limiting platform, and the endoscope handle is clamped between the main supporting platform and the movable limiting platform.

[0009] Furthermore, the sliding block is slidably arranged on the end surface of the movable limiting platform away from the main supporting platform.

[0010] Furthermore, a slot is provided on the end surface of the main supporting platform close to the movable limiting platform, and the endoscope handle is clamped in the slot.

[0011] Furthermore, a push handle connected to the rotating hub is arranged on the outside of the endoscope handle; a plurality of push handle limiting grooves are arranged at the bottom of the slot, and the push handle can be clamped in one of the push handle limiting grooves.

[0012] Furthermore, the push handle limit slot includes a first limit slot, a reset slot and a second limit slot; wherein, the first limit slot and the second limit slot are respectively located on both sides of the reset slot and are respectively used to correspond to the two limit rotation positions of the rotating wheel hub, and the reset slot is used to correspond to the middle rotation position of the rotating wheel hub.

[0013] Furthermore, the movable limiting platform is provided with a wire hole for allowing the traction rope to pass through.

[0014] Furthermore, a plurality of limit blocks are arranged on the end surface of the main support platform close to the movable limit platform, and the movable limit platform is engaged with the limit blocks.

[0015] Furthermore, it also includes a slide rail mounted on the fixed seat, and the slider is slidably arranged on the slide rail;

[0016] One end of the locking member passes through and is screwed to the side wall of the sliding block and can abut against the sliding rail.

[0017] Furthermore, it also includes a first locking screw threaded on the slider, and one end of the traction rope can be locked on the slider through the first locking screw.

[0018] Beneficial effects of the utility model:

[0019] The endoscope bending angle adjustment jig provided by the utility model comprises a fixing seat for fixing the endoscope handle, a slider slidably arranged on the fixing seat, and a locking piece for locking the slider on the fixing seat; a rotating hub is rotatably arranged in the endoscope handle, and at least one traction rope is respectively wound around the two sides of the rotating hub; one end of the traction rope can be locked on the slider. The endoscope bending angle adjustment jig provided by the application can ignore the assembly size error and the part size error, and accurately adjust the bending part of the endoscope to the required angle, thereby improving the consistency and yield rate of the product and the assembly efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the internal structure of the endoscope handle;

[0022] Figure 2 for Figure 1 A magnified view at point A;

[0023] Figure 3 A schematic diagram of the assembly structure of the endoscope bending angle adjustment fixture provided by an embodiment of the utility model during use;

[0024] Figure 4 A schematic diagram of the connection structure of a slider, a slide rail and a locking screw provided in an embodiment of the utility model;

[0025] Figure 5 A schematic diagram of the structure of the main support platform provided by an embodiment of the utility model;

[0026] Figure 6 for Figure 3 Enlarged view at B;

[0027] Figure 7 A schematic structural diagram of a movable limiting platform provided in an embodiment of the utility model.

[0028] icon:

[0029] 101-endoscope handle; 102-rotating wheel hub; 103-traction rope; 104-push handle; 105-second locking screw;

[0030] 1-fixed seat; 11-main support platform; 111-card slot; 112-limiting block; 113-pushing handle limiting slot; 12-movable limiting platform; 121-wire hole;

[0031] 2- Slider;

[0032] 3-locking piece;

[0033] 4- Slide rail;

[0034] 5-First locking screw. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] It should be noted that in the description of the present invention, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "", "" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] It should be noted that in the description of the present invention, the terms "connection" and "installation" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or connected through an intermediate medium; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Reference Figure 1 The disposable medical endoscope is mainly composed of a bending portion (not shown in the drawings) and a handle portion, wherein the bending portion includes a bendable snake bone; the handle portion includes an endoscope handle 101, a rotating hub 102 rotatably arranged inside the endoscope handle 101, and a push handle 104 installed outside the endoscope handle 101 and connected to the rotating hub 102. Figure 2 At least one traction rope 103 is wound around both sides of the rotating hub 102, and the traction rope 103 is usually a steel wire rope. After the endoscope is assembled, the ends of the traction ropes 103 on one side of the rotating hub 102 away from the rotating hub 102 are fixed to one side of the snake bone, and the ends of the traction ropes 103 on the other side of the rotating hub 102 away from the rotating hub 102 are fixed to the other side of the snake bone; thus, pushing the push handle 104 can rotate the rotating hub 102, and then pull the traction ropes 103 on both sides of the rotating hub 102 to achieve the bending of the snake bone.

[0039] During the use of the endoscope, the tightness of the traction rope 103 directly affects the bending accuracy of the bending portion. Therefore, how to adjust the traction rope 103 to a suitable tightness during the assembly of the endoscope is a technical problem that technical personnel in this field need to solve urgently.

[0040] Based on the above technical problems, the present application provides an endoscope bending angle adjustment fixture, referring to Figure 2 and Figure 3 The fixture includes a fixing seat 1 for fixing the endoscope handle 101, a slider 2 slidably disposed on the fixing seat 1, and a locking member 3 for locking the slider 2 on the fixing seat 1;

[0041] A rotating hub 102 is rotatably disposed inside the endoscope handle 101 , and at least one traction rope 103 is respectively wound around two sides of the rotating hub 102 ; one end of any traction rope 103 can be locked on the slider 2 .

[0042] The number of traction ropes on both sides of the rotating hub 102 can be set to one or more according to the strength requirements of the traction ropes in actual use, and there is no limitation here.

[0043] The steps for using the above-mentioned fixture include the following:

[0044] 1. Rotate and install the rotating hub 102 inside the endoscope handle 101, and fix the endoscope handle 101 on the fixing seat 1;

[0045] 2. Take out a traction rope 103 to be installed, fix one end of the traction rope 103 to one side of the snake bone, and pass the other end of the traction rope 103 around one side of the rotating hub 102 and lock it on the slider 2;

[0046] 3. After the rotating hub 102 is rotated and adjusted to the required angle, its rotation is restricted, and the slider 2 is controlled to slide relative to the fixed seat 1. The traction rope 103 moves synchronously with the slider 2 and drives the snake bone to bend. When the bending angle of the snake bone reaches the required angle (that is, when it matches the rotation angle of the rotating hub 102), the sliding is stopped and the slider 2 is locked. At this time, the tightness of the traction rope 103 is adjusted to a suitable degree; then, the traction rope 103 is fixed on the rotating hub 102, and the adjustment and installation of a traction rope 103 are completed;

[0047] 4. Remove the adjusted traction rope 103 from the slider 2 to prepare for adjusting the next traction rope 103 to be installed; repeat the above steps 2 and 3 to adjust the tightness of each traction rope 103 of the endoscope to a suitable degree.

[0048] Through the above adjustment steps, each traction rope 103 of the endoscope can be adjusted to a suitable tightness.

[0049] The endoscope bending angle adjustment jig provided in the present application can ignore assembly dimension errors and part dimension errors, and accurately adjust the bending portion of the endoscope to the required angle, thereby improving the consistency and yield rate of the product and the assembly efficiency of the product.

[0050] In the embodiment where a plurality of traction ropes 103 are respectively disposed on both sides of the rotating hub 102, the plurality of traction ropes 103 on one side of the rotating hub 102 are combed or twisted into a rope, and then the tightness of the ropes is adjusted according to the above steps.

[0051] Preferably, the sliding direction of the slider 2 is parallel to the length direction of the snake bone in an unbent state.

[0052] It should be noted that the present application does not limit the sliding direction of the slider 2; the sliding direction of the slider 2 only needs to satisfy the requirement that the slider 2 can drive the snake bone to bend through the traction rope 103 when the slider 2 slides. In addition, after the traction rope 103 is adjusted to a suitable tightness, it can be fixed to the rotating hub 102 by fastener connection or welding, etc., which is not limited here.

[0053] Reference Figure 2 For some endoscopes, each traction rope 103 is fixed to the rotating hub 102 by at least one second locking screw 105. Specifically, the second locking screw 105 is screwed to the rotating hub 102, one end of the traction rope 103 is fixed to the snake bone, and the end of the traction rope 103 away from the snake bone is clamped and fixed between the nut of the second locking screw 105 and the rotating hub 102. When the tension of the traction rope 103 is adjusted to a suitable degree, the second locking screw 105 is installed or tightened, so that the traction rope 103 is fixed to the rotating hub 102, and the adjustment and installation of one traction rope 103 are completed.

[0054] Reference Figure 3 The fixed seat 1 includes a main support platform 11 and a movable limit platform 12, and the endoscope handle 101 is limited between the main support platform 11 and the movable limit platform 12. The main support platform 11 and the movable limit platform 12 limit the position of the endoscope handle 101 relative to the fixed seat 1.

[0055] On the basis of the above structure, the sliding block 2 is slidably arranged on the end surface of the movable limiting platform 12 away from the main supporting platform 11 .

[0056] Reference Figure 3 and Figure 4 The endoscope bending angle adjustment fixture provided in the present application also includes a slide rail 4 installed on the fixed seat 1. Specifically, the slide rail 4 is fixed on the end surface of the movable limit platform 12 away from the main support platform 11; the slider 2 is slidably arranged on the slide rail 4, and the slider 2 is slidably arranged on the fixed seat 1 through the slide rail 4.

[0057] In this embodiment, the locking member 3 is specifically a bolt, one end of which passes through and is screwed to the side wall of the slider 2 and can abut against the slide rail 4. When in use, the slider 2 can be locked on the slide rail 4 by rotating the locking member 3 inwards, and the slider 2 can be released by rotating the locking member 3 outwards, so that the slider 2 can slide on the slide rail 4.

[0058] The endoscope bending angle adjustment fixture provided by the present application further includes a first locking screw 5 screwed on the slider 2, and one end of the traction rope 103 can be locked on the slider 2 through the first locking screw 5. Optionally, the first locking screw 5 is a butterfly-shaped hand screw; the above configuration can facilitate the staff to turn the first locking screw 5, so as to control the number of turns of the traction rope 103 wrapped around the first locking screw 5.

[0059] In other embodiments, a boss may be provided on the slider 2 , and one end of the traction rope 103 may be locked on the slider 2 by winding the traction rope 103 around the boss.

[0060] Reference Figure 5 A slot 111 is provided on the end surface of the main support platform 11 close to the movable limiting platform 12, and the endoscope handle 101 is clamped in the slot 111. The movable limiting platform 12 is arranged at the opening of the slot 111, so as to restrict the endoscope handle 101 on the fixing seat 1.

[0061] Reference Figure 6 The outside of the endoscope handle 101 is provided with a push handle 104 connected to the rotating hub 102; the bottom of the slot 111 is provided with a plurality of push handle limiting grooves 113, and the push handle 104 can be clamped in one of the push handle limiting grooves 113.

[0062] Furthermore, the push handle limit slot 113 includes a first limit slot, a reset slot and a second limit slot; wherein the first limit slot and the second limit slot are respectively located on both sides of the reset slot and are respectively used to correspond to the two limit rotation positions of the rotating hub 102, and the reset slot is used to correspond to the middle rotation position of the rotating hub 102. After the tension of the traction rope 103 is adjusted, when the rotating hub 102 is respectively at the two limit rotation positions, the snake bones are respectively in a state of being bent toward both sides to the maximum bending angle.

[0063] The structure of the push handle limiting groove 113 is described in detail below with reference to a specific embodiment of the present application:

[0064] In this embodiment, the number of the push handle limiting grooves 113 is three, and the three push handle limiting grooves 113 are arranged in sequence at angles around the same axis; after the endoscope handle 101 is placed in the slot 111, the rotation axis of the rotating hub 102 coincides with the axis around which the three push handle limiting grooves 113 are located; when the push handle 104 is clamped in any one of the push handle limiting grooves 113, the push handle limiting groove 113 can limit the rotation of the push handle 104, thereby limiting the rotation of the rotating hub 102.

[0065] For the convenience of description, the three push handle limit slots 113 are named the first limit slot, the reset slot and the second limit slot in sequence; when the push handle 104 is clamped in the first limit slot, the rotating hub 102 is in the first limit rotation position, and the tightness of the traction rope 103 on one side of the snake bone is adjusted by adjusting the fixture until the snake bone is in the first bending limit state; when the push handle 104 is clamped in the second limit slot, the rotating hub 102 is in the second limit rotation position, and the tightness of the traction rope 103 on the other side of the snake bone is adjusted by adjusting the fixture until the snake bone is in the second bending limit state; when the push handle 104 is clamped in the reset slot, the rotating hub 102 is in the middle rotation position, and the snake bone should be in a nearly straight unbent state; wherein, when the snake bone is in the first bending limit state and the second bending limit state, respectively, the snake bone is in a state of being bent toward both sides to the maximum bending angle.

[0066] The first limit slot and the second limit slot are used to limit the rotation of the push handle 104, and then limit the rotation of the rotating hub 102. The first limit slot and the second limit slot can accurately fix the rotating hub 102 at two limit rotation positions, eliminating the installation error caused by the operator's judgment of the hub position based on experience, and further improving the assembly efficiency and assembly accuracy of the endoscope; the setting of the reset slot can test the adjusted traction rope 103, that is, after each traction rope 103 is adjusted, the push handle 104 is snapped into the reset slot, and it is observed whether the snake bone is in a nearly straight state, so as to determine whether the traction ropes 103 on both sides of the rotating hub 102 are adjusted to standard.

[0067] It should be noted that in the embodiment where the push handle limiting groove 113 is not provided, the rotation of the rotating hub 102 can be limited by manual pressing during the adjustment process.

[0068] Reference Figure 7 The movable limit platform 12 is provided with a wire hole 121 for the traction rope 103 to pass through. In this embodiment, the number of the wire holes 121 is set to two, and the two wire holes 121 are respectively used for the traction ropes 103 on both sides of the rotating hub 102 to pass through; the wire holes 121 can play a guiding role to guide one end of the traction rope 103 to the first locking screw 5.

[0069] Reference Figure 5 and Figure 7 The main support platform 11 and the movable limit platform 12 are detachably connected. In this embodiment, a plurality of limit blocks 112 are arranged on the end surface of the main support platform 11 close to the movable limit platform 12, and the movable limit platform 12 is engaged with the limit blocks 112, thereby limiting the relative position of the main support platform 11 and the movable limit platform 12.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An endoscope bending angle adjustment fixture, characterized in that: It comprises a fixing seat (1) for fixing an endoscope handle (101), a sliding block (2) slidably arranged on the fixing seat (1), and a locking member (3) for locking the sliding block (2) on the fixing seat (1); A rotating hub (102) is rotatably arranged inside the endoscope handle (101), and at least one traction rope (103) is respectively wound around two sides of the rotating hub (102); one end of any one of the traction ropes (103) can be locked on the slider (2).

2. The endoscope bending angle adjustment jig according to claim 1, characterized in that: The fixing seat (1) comprises a main supporting platform (11) and a movable limiting platform (12), and the endoscope handle (101) is limited between the main supporting platform (11) and the movable limiting platform (12).

3. The endoscope bending angle adjustment jig according to claim 2, characterized in that: The sliding block (2) is slidably arranged on the end surface of the movable limiting platform (12) away from the main supporting platform (11).

4. The endoscope bending angle adjustment jig according to claim 2, characterized in that: A card slot (111) is provided on the end surface of the main support platform (11) close to the movable limiting platform (12), and the endoscope handle (101) can be carded in the card slot (111).

5. The endoscope bending angle adjustment jig according to claim 4, characterized in that: The endoscope handle (101) is provided with a push handle (104) connected to the rotating hub (102) on the outside; the bottom of the slot (111) is provided with a plurality of push handle limiting slots (113), and the push handle (104) can be locked in one of the push handle limiting slots (113).

6. The endoscope bending angle adjustment jig according to claim 5, characterized in that: The push handle limit slot (113) comprises a first limit slot, a reset slot and a second limit slot; wherein the first limit slot and the second limit slot are respectively located on both sides of the reset slot and are respectively used to correspond to two limit rotation positions of the rotating hub (102), and the reset slot is used to correspond to the middle rotation position of the rotating hub (102).

7. The endoscope bending angle adjustment jig according to claim 2, characterized in that: The movable limiting platform (12) is provided with a wire hole (121) for the traction rope (103) to pass through.

8. The endoscope bending angle adjustment jig according to claim 2, characterized in that: A plurality of limit blocks (112) are arranged on the end surface of the main support platform (11) close to the movable limit platform (12), and the movable limit platform (12) is snap-fitted with the limit blocks (112).

9. The endoscope bending angle adjustment jig according to any one of claims 1 to 8, characterized in that: It also includes a slide rail (4) mounted on the fixed seat (1), and the slider (2) is slidably mounted on the slide rail (4); One end of the locking member (3) passes through and is screwed to the side wall of the sliding block (2) and can abut against the sliding rail (4).

10. The endoscope bending angle adjustment jig according to any one of claims 1 to 8, characterized in that: It also comprises a first locking screw (5) threadedly connected to the slider (2), and one end of the traction rope (103) can be locked on the slider (2) through the first locking screw (5).

Images