A kind of inspection tool and method for endoscopic snake bone

Abstract

The present invention provides a tool and method for testing endoscopic serpentines, relating to the field of tool testing technology. The tool comprises a serpentine inspection workbench and a serpentine fixing seat. The serpentine inspection workbench includes a serpentine angle test plate, a test plate holder, and a base. The serpentine angle test plate is provided with test scale lines and a serpentine inspection guide rail. The serpentine fixing seat includes a serpentine profiling fixing platform, which is slidably connected to the serpentine inspection guide rail via a slide structure and is provided with a clamping mechanism. The inspection method includes: installing the serpentine to be tested in the clamping mechanism; suspending a preset weight block on a drive wire rope; sliding the serpentine fixing seat so that the serpentine's curved portion aligns with the test scale line; and reading the angle value and comparing it with a theoretical value to determine whether it passes the test. The present invention utilizes a purely mechanical structural design, which not only enables simultaneous testing of the serpentine's bending angle and bending force, but also has the advantages of simple structure and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of tool testing, and in particular to a tool and method for testing endoscopic snake bones. Background Art

[0002] Endoscopes are widely used in medical diagnosis and treatment, and the serpentine is a core component. Existing serpentines are typically assembled from multiple segments riveted manually, with angle control achieved via a steel cable drive. The angle and bending force of the serpentine directly impact the operability of endoscopes, making quality inspection of the serpentine crucial.

[0003] Currently, existing snake bone testing tools are primarily used for life testing. For example, Chinese patent application number CN115144281A discloses a device and method for testing the bending fatigue of endoscope snake bones. This type of tool typically includes over a dozen components, such as a drive motor and sensors, resulting in a complex structure and high manufacturing costs. Furthermore, since the snake bones are assembled using manual riveting, the inherent problem of poor consistency in micro-multi-point riveting inevitably arises, resulting in variations in the bending force and angle of the snake bones. Summary of the Invention

[0004] The purpose of the present invention is to provide an inspection tool and method for an endoscopic snake bone, which can accurately inspect the snake bone angle and bending strength with high cost performance to meet the actual needs of snake bone research and development, testing and endoscope manufacturing.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] An inspection tool for endoscopic snake bones, comprising:

[0007] A snake bone inspection workbench, comprising a snake bone angle test plate, a test plate holder and a base, wherein the snake bone angle test plate is provided with a test scale line and a snake bone inspection guide rail;

[0008] The serpentine bone fixing seat comprises a serpentine bone profiling fixing platform, the serpentine bone profiling fixing platform is slidably connected to the serpentine bone inspection guide rail through a sliding platform structure, and the serpentine bone profiling fixing platform is provided with a clamping mechanism for fixing the serpentine bone.

[0009] Furthermore: the clamping mechanism includes:

[0010] A fixed clamp, fixedly arranged on the snake bone profiling fixing platform;

[0011] A movable clamp is slidably arranged on the snake bone profiling fixing platform;

[0012] One end of the elastic member is connected to the movable clamp, and the other end is fixed on the snake-bone profiling fixing platform. The elastic force of the elastic member provides power for the movable clamp to move toward the fixed clamp.

[0013] Furthermore: the snake bone profiling fixing platform is also provided with:

[0014] a snake bone pre-fixation platform, located between the fixed clamp and the movable clamp;

[0015] The wire rope through hole is used for the driving wire rope of the snake bone to pass through.

[0016] Furthermore, the serpentine fixing seat further comprises an adjusting screw, and the serpentine profiling fixing platform is locked at a designated position of the serpentine inspection guide rail through the adjusting screw.

[0017] Furthermore: the angle test range of the test scale lines on the snake bone angle test plate is 90° to 360°.

[0018] Furthermore: the test board holder and the base are fixedly connected by fastening screws.

[0019] The present invention also provides a method for inspecting endoscopic snake bones, which uses the above-mentioned inspection tool and includes the following steps:

[0020] S1: Install the snake bone to be tested in the clamping mechanism of the snake bone fixing seat;

[0021] S2: Hanging a weight block corresponding to the optimal bending strength of the snake bone on the driving wire rope of the snake bone to be tested;

[0022] S3: Sliding the serpentine bone fixing seat on which the serpentine bone to be tested is installed along the serpentine bone inspection guide rail until the curved portion of the serpentine bone to be tested corresponds to the test scale line on the serpentine bone angle testing plate;

[0023] S4: Read the angle value corresponding to the bending portion of the snake bone to be tested, and compare it with the preset theoretical bending angle to determine whether the snake bone to be tested is qualified.

[0024] Furthermore, in step S2, the weight m of the weight block and the optimal bending strength f of the snake bone satisfy the following relationship:

[0025] f=mg

[0026] where g is the acceleration due to gravity.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This device utilizes an angle test plate mounted on a serpentine inspection workbench, which slides into the contoured mounting platform of the serpentine mounting base. This allows the inspection tool to simultaneously measure both the serpentine's bending angle and bending force. The scale lines on the angle test plate provide direct readings of the serpentine's bending angle, while a suspended weight applies a standardized bending force. This significantly simplifies the inspection tool's structure while ensuring accurate testing.

[0029] Second, by setting a clamping mechanism consisting of a fixed clamp, a movable clamp and an elastic member on the snake bone profiling fixing table, and cooperating with the setting of the pre-fixing table, the snake bone to be tested can be firmly fixed, and the pressing force of the elastic member can make the stress state of the snake bone during testing consistent with its actual working state in the endoscope, thereby improving the reliability of the test results.

[0030] Third, the present invention utilizes a purely mechanical design, eliminating the need for electronic components such as drive motors and sensors. This not only reduces manufacturing and maintenance costs but also improves the reliability of the inspection tool. Furthermore, the simple and intuitive inspection method significantly reduces the operator's operational complexity and learning curve, enabling the inspection tool to be widely used in a variety of fields, including snake bone research and development, testing, and endoscope manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a diagram of the structure of a common snake bone;

[0032] Figure 2 The figure is a schematic diagram of the overall structure of the inspection tool for endoscopic snake bones;

[0033] Figure 3 This is a side view structural diagram of the snake bone inspection workbench;

[0034] Figure 4 This is a schematic diagram of the structure of the snake bone angle test board;

[0035] Figure 5 It is the structural diagram a of the snake bone fixing seat;

[0036] Figure 6 It is the structural diagram b of the snake bone fixing seat;

[0037] Figure 7 It is the structural diagram c of the snake bone fixing seat;

[0038] Figure 8 This is a functional diagram of the snake bone fixing seat;

[0039] Figure 9 The figure is a schematic diagram of the assembly relationship between the snake bone fixing seat and the snake bone inspection workbench;

[0040] Figure 10Schematic diagram of the snake bone to be tested being installed in the clamping mechanism of the snake bone fixing seat;

[0041] Figure 11 This is a schematic diagram of the snake bone bending angle test;

[0042] In the picture:

[0043] 1. Snake bone inspection workbench; 11. Snake bone angle test plate; 11a. Graduation mark; 11b. Snake bone inspection guide rail; 11c. Scale line; 12. Test plate holder; 13. Base; 14. Fastening screw; 2. Snake bone fixing seat; 21. Snake bone profiling fixing platform; 21a. Fixed clamp; 21b; Snake bone pre-fixing platform; 21c. Active clamp guide groove; 21d. Active clamp mounting seat; 21e. Wire rope through hole; 21f. Screw mounting seat; 21g. Mounting hole; 22. Active clamp; 23. Spring; 24. Adjusting screw; 3. Snake bone; 4. Weight block. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] like Figure 1 The following figure shows the structure of a typical snake bone 3. The snake bone 3 is a core component in endoscope products. It is typically composed of multiple segments assembled together through manual riveting, with angle control achieved via a steel cable drive. Manual riveting inevitably results in inconsistent micro-riveting, leading to variations in the bending force and angle of the snake bone 3.

[0047] like Figure 2 The figure shows the overall structure of the inspection tool for endoscope snake bone provided by the present invention. The inspection tool comprises two main parts: snake bone inspection workbench 1 and snake bone fixing seat 2.

[0048] like Figure 3 The figure shows a side view of the structure of the snake bone inspection workbench 1. The snake bone inspection workbench 1 includes a snake bone angle test plate 11, a test plate holder 12 and a base 13. The test plate holder 12 is fixedly connected to the base 13 by fastening screws 14. Figure 4 As shown, the snake bone angle test plate 11 is provided with scale lines 11c and 90° graduation marks 11a. The test range is 90° to 360°, covering the test range of common snake bones. The snake bone angle test plate 11 is also provided with a snake bone inspection guide 11b for cooperating with the snake bone fixing seat 2 to achieve sliding positioning.

[0049] like Figure 5-Figure 7 The figure shows the structure of the serpentine bone holder 2. The serpentine bone holder 2 includes a serpentine bone contoured fixing platform 21, a movable clamp 22, a spring 23, and an adjustment screw 24. The serpentine bone contoured fixing platform 21 is manufactured based on the shape of the serpentine bone to be inspected. It is equipped with a fixed clamp 21a, a serpentine bone pre-fixing platform 21b, a guide groove 21c for the movable clamp 22, a mounting base 21d for the movable clamp 22, a wire rope passage hole 21e, and a slide structure. The fixed clamp 21a and the movable clamp 22 cooperate to form a clamping mechanism, with the movable clamp 22 sliding within the guide groove. One end of the spring 23 is connected to the movable clamp 22, and the compressive force exerted by the spring 23 enables the movable clamp 22 to securely clamp the serpentine bone. The slide structure includes a screw mounting base 21f and a mounting hole 21g provided in the screw mounting base 21f to facilitate mounting with the adjustment screw 24. The slide structure is in sliding cooperation with the serpentine inspection guide rail 11 b , and the serpentine fixing seat 2 can be locked at a specified position of the guide rail by adjusting the screw 24 .

[0050] like Figure 8 The figure shows the function of the snake bone fixing base 2. The fixed clamp 21a, the movable clamp 22, and the pre-fixing platform cooperate to firmly fix the snake bone 3 to be tested on the snake bone profiling fixing base 21. The wire rope hole 21e is used to pass the driving wire rope of the snake bone 3, facilitating the subsequent suspension of the weight block 4.

[0051] like Figure 9 The figure shows the assembly relationship between the serpentine fixed seat 2 and the serpentine inspection workbench 1. The serpentine fixed seat 2 cooperates with the guide rail on the serpentine angle test plate 11 through the slide structure, can slide along the guide rail and lock the position by adjusting screw 24.

[0052] The present invention also provides a method for detecting endoscopic snake bones. Figure 10 As shown, first the snake bone 3 to be tested is installed in the clamping mechanism of the snake bone fixing seat 2, and a weight block 4 is hung on its driving wire rope. The weight of the weight block 4 is pre-calibrated and determined according to the optimal bending strength of the snake bone to be tested.

[0053] like Figure 11 As shown, the bracket with the serpentine 3 installed is assembled into the guide rail of the inspection workbench. By sliding the serpentine bracket 2, the bending portion of the serpentine 3 is aligned with the test scale line 11c on the angle test plate. By reading the angle value corresponding to the bending portion of the serpentine 3 and comparing it with the preset theoretical bending angle, the qualified serpentine 3 can be determined.

[0054] The above-described inspection tool and method not only simultaneously inspects the bending angle and strength of the serpentine bone 3, but also faithfully reproduces the stress state of the serpentine bone 3 within the endoscope through contour-based fixation, thereby ensuring the reliability of the inspection results. Furthermore, due to its purely mechanical design, the inspection tool has the advantages of simple structure, low cost, and easy operation.

[0055] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An inspection tool for endoscope snake bones, characterized in that: include: A snake bone inspection workbench, comprising a snake bone angle test plate, a test plate holder and a base, wherein the snake bone angle test plate is provided with a test scale line and a snake bone inspection guide rail; A serpentine bone fixing seat, comprising a serpentine bone profiling fixing platform, the serpentine bone profiling fixing platform being slidably connected to the serpentine bone inspection guide rail via a sliding platform structure, and the serpentine bone profiling fixing platform being provided with a clamping mechanism for fixing the serpentine bone; the serpentine bone fixing seat with the serpentine bone to be tested installed thereon slides along the serpentine bone inspection guide rail until the curved portion of the serpentine bone to be tested corresponds to the test scale line on the serpentine bone angle test plate; The clamping mechanism comprises: A fixed clamp, fixedly arranged on the snake bone profiling fixing platform; A movable clamp is slidably arranged on the snake bone profiling fixing platform; An elastic member, one end of which is connected to the movable clamp and the other end of which is fixed to the snake-bone profiling fixing platform, wherein the elastic force of the elastic member provides power for the movable clamp to move toward the fixed clamp; The snake bone profiling fixing platform is also provided with: a snake bone pre-fixation platform, located between the fixed clamp and the movable clamp; The wire rope through hole is used for the driving wire rope of the snake bone to pass through, so as to facilitate the hanging of weight blocks on the driving wire rope during subsequent inspections; The test scale lines on the snake bone angle test board are used to directly read the bending angle of the snake bone, and the suspended weight block is used to apply a standard bending force.

2. The inspection tool for endoscopic snake bones according to claim 1, characterized in that: The serpentine fixing seat further comprises an adjusting screw, through which the serpentine profiling fixing platform is locked at a designated position of the serpentine inspection guide rail.

3. The inspection tool for endoscope snake bones according to claim 1, characterized in that: The angle test range of the test scale lines on the snake bone angle test plate is 90° to 360°.

4. The inspection tool for endoscopic snake bones according to claim 1, characterized in that: The test board holder and the base are fixedly connected by fastening screws.

5. A method for endoscopic snake bone inspection, characterized in that: The inspection tool according to any one of claims 1 to 4 comprises the following steps: S1: Install the snake bone to be tested in the clamping mechanism of the snake bone fixing seat; S2: Hanging a weight block corresponding to the optimal bending strength of the snake bone on the driving wire rope of the snake bone to be tested; S3: Sliding the serpentine bone fixing seat on which the serpentine bone to be tested is installed along the serpentine bone inspection guide rail until the curved portion of the serpentine bone to be tested corresponds to the test scale line on the serpentine bone angle testing plate; S4: Read the angle value corresponding to the bending portion of the snake bone to be tested, and compare it with the preset theoretical bending angle to determine whether the snake bone to be tested is qualified.

6. The method for endoscopic snake bone inspection according to claim 5, characterized in that: In step S2, the weight m of the weight block and the optimal bending strength f of the snake bone satisfy the relationship: f=mg where g is the acceleration due to gravity.

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