Device for detecting force transmission coefficient of endoscope operating forceps

Abstract

The utility model relates to the field of medical instrument detection equipment, in particular to a device for detecting the force transmission coefficient of endoscope operating forceps, which comprises a detection table, a force application structure, a handle assembly and a jaw assembly, the force application structure is arranged in the detection table, the handle assembly is connected with the force application structure, a first force sensor is arranged on the handle assembly, and a second force sensor is arranged on the jaw assembly. A second force sensor is arranged on the jaw assembly; the multi-angle adjusting platform is independently arranged, and the jaw assembly is arranged on the multi-angle adjusting platform. According to the detection device, the multi-angle adjusting platform is set as an independent element, and the jaw assembly is detachably arranged on the multi-angle adjusting platform, so that the angle and the distance between the jaw assembly and the handle assembly can be greatly adjusted, and the force transmission coefficients of endoscope operating forceps with different lengths and specifications can be detected.

Description

Technical Field

[0001] This utility model relates to the field of medical device testing equipment, and more specifically, to a device for detecting the force transmission coefficient of endoscopic surgical forceps. Background Technology

[0002] Endoscopic surgical forceps are widely used in minimally invasive surgery. Common endoscopic surgical forceps include dissecting forceps and grasping forceps. During surgery, dissecting forceps and grasping forceps enter the body's natural orifices or surgical incisions through channels that are the same as or different from those of the endoscope to access human tissue for examination, diagnosis, or treatment. Endoscopic surgical forceps differ from ordinary surgical instruments in that they operate within a narrow tube, representing remote operation, and their input-output relationship is more complex than that of ordinary instruments. The force transmission coefficient is the ratio of the input force at the handle to the output force at the forceps head, reflecting the surgeon's tactile feedback during clinical practice. According to the standards YY / T0944-2014 "Medical Endoscopes, Endoscopic Instruments, and Separating Forceps" and YY / T 0940-2014 "Medical Endoscopes and Endoscopic Instrument Grasping Forceps," the closing force transmission coefficient and opening force transmission coefficient are key indicators for evaluating product quality and performance. These reflect the magnitude of resistance during the opening and closing process of the separating forceps and grasping forceps. Therefore, the opening and closing force transmission coefficients of separating forceps and grasping forceps should be tested before use. However, currently, there are numerous domestic and imported endoscopic separating forceps and grasping forceps samples, with significant differences in specifications and materials. The distance and angle between the jaw detection component and the handle detection component of existing testing equipment are relatively fixed, making it difficult to meet the testing needs of different specifications of endoscopic surgical forceps. This can easily lead to situations where the sample and testing equipment are incompatible, preventing the completion of the test. Utility Model Content

[0003] This invention aims to overcome at least one of the defects (deficiencies) of the prior art and provides a device for detecting the force transmission coefficient of endoscopic surgical forceps. It solves the problem that the distance and angle between the jaw detection component and the handle detection component of the existing detection equipment are relatively fixed, making it difficult to meet the needs of detecting endoscopic surgical forceps of different specifications, and easily leading to the problem that the sample and the detection equipment are mismatched and the detection cannot be completed.

[0004] The technical solution adopted by this utility model is a device for detecting the force transmission coefficient of endoscopic surgical forceps, including a testing table, a force-applying structure, a handle assembly, and a jaw assembly. The force-applying structure is disposed inside the testing table, and the handle assembly is connected to the force-applying structure. A first force sensor is disposed on the handle assembly. A second force sensor is disposed on the jaw assembly. The device for detecting the force transmission coefficient of endoscopic surgical forceps also includes a multi-angle adjustment platform, which is independently disposed, and the jaw assembly is disposed on the multi-angle adjustment platform.

[0005] A force-applying structure drives the handle assembly to move, thereby applying force to the handle of the endoscopic surgical forceps. A first force sensor on the handle assembly detects the magnitude of the applied force. A jaw assembly and a second force sensor detect the magnitude of the force on the jaws. The jaw assembly is mounted on a multi-angle adjustment platform, which is independently configured. Compared to existing devices for detecting the force transmission coefficient of endoscopic surgical forceps, the multi-angle adjustment platform is an independent component, allowing for significant adjustments to its position and height to accommodate endoscopic surgical forceps of different lengths and sizes.

[0006] Furthermore, the multi-angle adjustment platform includes an adjustment rod base, an adjustment rod, and a support platform. The adjustment rod is mounted on the adjustment rod base, the support platform is mounted on the adjustment rod and can move up and down along the adjustment rod, and the jaw assembly is mounted on the support platform.

[0007] The adjusting rod and support platform are mounted on the base of the adjusting rod. Moving the base of the adjusting rod allows for adjustment of the position of the multi-angle adjusting platform, making it suitable for endoscopic surgical forceps of different lengths and sizes. The support platform is mounted on the adjusting rod, and the jaw assembly is mounted on the support platform. Moving the vertical position of the support platform allows for adjustment of the height of the jaw assembly.

[0008] Furthermore, the jaw assembly is detachably mounted on the support platform.

[0009] The jaw assembly is equipped with a second force sensor, which needs to be electrically connected to the test bench. Therefore, the range of motion of the jaw assembly is limited. The jaw assembly can be detachably mounted on the support platform. After detachment, the multi-angle adjustment platform can be moved arbitrarily, or one multi-angle adjustment platform can be used for multiple testing devices.

[0010] Furthermore, the support platform has mounting holes, and the jaw assembly is mounted on the mounting base, which is located inside the mounting holes; fasteners are also provided inside the mounting holes.

[0011] Mounting holes are made on the support platform, and the jaw assembly is set on the mounting base. The mounting base is placed in the mounting holes and fastened with fasteners, thus achieving a detachable connection between the jaw assembly and the support platform.

[0012] Furthermore, the fastener is a threaded rod with an external thread on its outer surface; a threaded hole is provided on one side of the support platform, the threaded hole extends to the mounting hole, and an internal thread matching the external thread of the threaded rod is provided in the threaded hole, and the threaded rod is disposed in the threaded hole.

[0013] The threaded rod can be screwed in and out of the threaded hole. When the threaded rod is screwed in, it secures the mounting base, ensuring the jaw assembly is stably mounted on the support platform. When the threaded rod is screwed out, it releases the restriction on the mounting base, allowing the jaw assembly to be removed from the support platform. Using a threaded rod as a fastener, the jaw assembly can be installed and removed simply by screwing it in and out, making the operation simple and convenient.

[0014] Furthermore, the support platform is square, with round holes at each of its four corners. Multiple adjusting rods are respectively installed in the round holes at the four corners. Each adjusting rod has an external thread, and each adjusting rod has a nut that matches the adjusting rod.

[0015] By creating round holes at the corners of the support platform, it is fitted onto the support rod, allowing the platform to move up and down along the adjusting rod. Once the support platform is adjusted to the appropriate height, nuts can be used to secure it and prevent it from sliding down.

[0016] Furthermore, the jaw assembly includes a first mounting block and a second mounting block. The first mounting block is horizontally movable relative to the second mounting block. A first clamping block is provided on the first mounting block, and a second force sensor is provided on the second mounting block. The second force sensor is provided with a second clamping block.

[0017] The first clamping block and the second clamping block are respectively mounted on the first mounting block and the second mounting block. Adjusting the horizontal distance between the first mounting block and the second mounting block will adjust the horizontal distance between the first clamping block and the second clamping block to adapt to the size of the jaws. When force is applied to the handle of the surgical forceps, it can cooperate with the second force sensor to detect the magnitude of the force on the jaws.

[0018] Furthermore, the handle assembly includes a third mounting block and a fourth mounting block. The third mounting block is horizontally movable relative to the fourth mounting block. A first handle retainer is provided on the third mounting block, a first force sensor is provided on the fourth mounting block, and a second handle retainer is provided on the first force sensor.

[0019] The two handles of the endoscopic surgical forceps are respectively fitted onto the first handle retainer and the second handle retainer. The third mounting block and the fourth mounting block move horizontally under the action of the force-applying structure, thereby causing the first handle retainer and the second handle retainer to apply force to the handles of the surgical forceps. The first force sensor detects the magnitude of the applied force.

[0020] Furthermore, the first handle retainer and the second handle retainer are detachably mounted on the third mounting block and the first force sensor, and there are multiple sets of the first handle retainer and the second handle retainer, with different sizes for the multiple sets of the first handle retainer and the second handle retainer.

[0021] Currently, there are numerous domestic and imported endoscopic surgical forceps samples with varying specifications and materials. The equipment and fixtures used for testing the transmission coefficient of closing and opening forces are relatively limited. By detachably mounting the first and second handle retainers on the third and fourth mounting blocks and equipping them with various specifications, the appropriate first and second handle retainers can be selected according to different endoscopic surgical forceps, resulting in more even force distribution on the handles and thus improving the accuracy of the test.

[0022] Furthermore, a multi-angle adjustment platform for the aforementioned device for detecting the force transmission coefficient of endoscopic surgical forceps.

[0023] Compared with existing technologies, the advantages of this invention are as follows: By setting the multi-angle adjustment platform as an independent component and placing the jaw assembly on the multi-angle adjustment platform, the angle and distance between the jaw assembly and the handle assembly can be adjusted significantly, thereby enabling the detection of force transmission coefficients for endoscopic surgical forceps of different lengths and specifications. The detachable connection between the multi-angle adjustment platform and the jaw assembly allows the multi-angle adjustment platform to be disassembled and used in multiple testing devices as needed. This testing device is also equipped with various specifications of first and second handle retainers, which can be selected according to different endoscopic surgical forceps, thereby making the force on the handle more uniform and improving the accuracy of the test. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the present invention.

[0025] Figure 2 This is a structural diagram of the force application structure and handle assembly inside the testing platform of this utility model.

[0026] Figure 3 This is a structural diagram of the multi-angle adjustment platform.

[0027] Figure 4 A structural diagram showing the mounting bracket and jaw assembly.

[0028] Figure 5 This is a structural diagram of the jaw assembly mounted on a multi-angle adjustment platform. Detailed Implementation

[0029] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0030] Example 1

[0031] like Figure 1As shown, this embodiment provides a device for detecting the force transmission coefficient of endoscopic surgical forceps, including a detection table 1, a force-applying structure 2, a handle assembly 3, and a jaw assembly 4. The force-applying structure 2 is disposed inside the detection table 1, and the handle assembly 3 is connected to the force-applying structure 2. A first force sensor 31 is disposed on the handle assembly 3. A second force sensor 41 is disposed on the jaw assembly 4. The device for detecting the force transmission coefficient of endoscopic surgical forceps also includes a multi-angle adjustment platform 5, which is independently disposed, and the jaw assembly 4 is disposed on the multi-angle adjustment platform 5.

[0032] like Figure 2 As shown, the force-applying structure 2 includes a slide rail 21, a first slider 22, a second slider 23, a stepper motor 24, and a handwheel 26. The slide rail 21 is fixedly connected to the detection platform 1. The first slider 22 and the second slider 23 are both mounted on the slide rail 21. A first lead screw 25 is connected to the output shaft of the stepper motor 24, and the first lead screw 25 is connected to the first slider 22. The handwheel 26 is connected to the second slider 23 via a second lead screw 27. When the stepper motor 24 operates, the first slider 22 can move horizontally relative to the second slider 23.

[0033] The handle assembly 3 includes a third mounting block 31 and a fourth mounting block 32. The third mounting block 31 is disposed on the first slider 22, and the fourth mounting block 32 is disposed on the second slider 23. A first force sensor 35 is disposed on the third mounting block 31, and a first handle retainer 33 is disposed on the first force sensor 35. A second handle retainer 34 is disposed on the fourth mounting block 32. The first handle retainer 33 and the second handle retainer 34 are threadedly connected to the first force sensor 35 and the fourth mounting block 32, respectively, to facilitate the disassembly and replacement of the first handle retainer 33 and the second handle retainer 34.

[0034] Both the first handle retainer 33 and the second handle retainer 34 are cylindrical and come in various sizes. The diameters of the first handle retainer 33 and the second handle retainer 34 can be 18mm, 20mm, 22mm, and 24mm, to suit the specifications of commonly used endoscopic separation forceps or grasping forceps on the market.

[0035] like Figure 3 As shown, the multi-angle adjustment platform 5 includes an adjustment rod base 51, adjustment rods 52, and a support platform 53. Multiple adjustment rods 52 are mounted on the adjustment rod base 51. The support platform 53 is square, with circular holes at each of its four corners, and the adjustment rods 52 are positioned within these holes. External threads are provided on the outer surface of each adjustment rod 52, and two nuts 54 are provided on each rod. The two nuts 54 are respectively positioned on the upper and lower sides of the support platform 53 for adjusting and fixing the height of the support platform 53.

[0036] A mounting hole 55 is provided in the middle of the support platform 53. The support platform 53 has a certain thickness, and a horizontal threaded hole 56 is provided on one side, which extends into the mounting hole 55 in the middle. A threaded rod 57 is provided in the threaded hole 56, and the threaded rod 57 can be screwed in and out along the threaded hole 56. A knob 58 is also provided at the end of the threaded rod 57 away from the mounting hole 55 to facilitate the screwing in and out of the threaded rod 57.

[0037] like Figure 4 As shown, the jaw assembly 4 is mounted on the mounting bracket 6. The mounting bracket 6 includes a mounting base 61, a support rod 62, and a platform plate 63. The mounting base 61 is located at the lower end of the support rod 62, and the platform plate 63 is located at the upper end of the support rod 62. Two elongated holes 64 are formed on the platform plate 63. The shape and size of the mounting base 61 are the same as the mounting hole 55 in the middle of the support platform 53. In use, the mounting base 61 is placed in the mounting hole 55, and the threaded rod 57 is screwed in to firmly fix the mounting bracket 6 on the multi-angle adjustment platform 5.

[0038] The jaw assembly 4 includes a first mounting block 41 and a second mounting block 42. The first mounting block 41 and the second mounting block 42 are respectively connected to the platform plate 63 by bolts, and the bolts are positioned within an elongated hole 64, allowing the first mounting block 41 and the second mounting block 42 to move along the elongated hole 64, thereby adjusting the distance between them. A first clamping block 43 is provided on the first mounting block 41, and a second force sensor 45 is provided on the second mounting block 42. A second clamping block 44 is provided on the second force sensor. U-shaped grooves 46 are respectively formed on the first clamping block 43 and the second clamping block 44.

[0039] like Figure 1 As shown, during use, select the appropriate first handle retainer 33 and second handle retainer 34 according to the specifications of the endoscopic surgical forceps to be tested, adjust the distance between the first handle retainer 33 and the second handle retainer 34, and place the handle of the surgical forceps onto the first handle retainer 33 and the second handle retainer 34. Adjust the position of the multi-angle adjustment platform 5 and the height of the support platform 53 so that the front end of the surgical forceps jaws is located in the U-shaped grooves 46 of the first clamping block 43 and the second clamping block 44, respectively. Activate the force application structure 2 to apply force to the handle of the surgical forceps. The first force sensor 35 and the second force sensor 45 measure the magnitude of the force applied to the handle and the magnitude of the force on the jaws, respectively, thereby calculating the force transmission coefficient.

[0040] Example 2

[0041] like Figure 3 As shown, this embodiment provides a multi-angle adjustment platform for the device used to detect the force transmission coefficient of endoscopic surgical forceps as described above.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for detecting the force transmission coefficient of an endoscopic surgical forceps, comprising a detection table, a force applying structure, a handle assembly and a forceps jaw assembly, the force applying structure is arranged in the detection table, the handle assembly is connected with the force applying structure, a first force sensor is arranged on the handle assembly; a second force sensor is arranged on the forceps jaw assembly, characterized in that, The multi-angle adjusting platform is independently arranged, and the jaw assembly is arranged on the multi-angle adjusting platform.

2. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to claim 1, characterized in that, The multi-angle adjusting platform comprises an adjusting rod base, an adjusting rod and a supporting platform, the adjusting rod is arranged on the adjusting rod base, the supporting platform is arranged on the adjusting rod and can move up and down along the adjusting rod, and the jaw assembly is arranged on the supporting platform.

3. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to claim 2, characterized in that The jaw assembly is detachably arranged on the supporting platform.

4. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to claim 3, characterized in that An installation hole is arranged on the supporting platform, an installation seat is arranged below the jaw assembly, the installation seat is arranged in the installation hole, and a fastener is further arranged in the installation hole.

5. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to claim 4, characterized in that The fastener is a threaded rod, an external thread is arranged on the outer surface of the threaded rod, a threaded hole is arranged on one side of the supporting platform, the threaded hole extends to the installation hole, an internal thread matched with the external thread of the threaded rod is arranged in the threaded hole, and the threaded rod is arranged in the threaded hole.

6. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to claim 2, characterized by The supporting platform is square, a circular hole is arranged at each corner of the supporting platform, a plurality of adjusting rods are arranged in the circular holes of the four corners, an external thread is arranged on the adjusting rod, and a nut matched with the adjusting rod is arranged on each adjusting rod.

7. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to claim 1, characterized by The jaw assembly comprises a first installation block and a second installation block, the first installation block can move horizontally relative to the second installation block, a first clamping block is arranged on the first installation block, a second force sensor is arranged on the second installation block, and a second clamping block is arranged on the second force sensor.

8. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to any one of claims 1 to 6, characterized in that, The handle assembly comprises a third installation block and a fourth installation block, the third installation block can move horizontally relative to the fourth installation block, a first handle fixer is arranged on the third installation block, a first force sensor is arranged on the fourth installation block, and a second handle fixer is arranged on the first force sensor.

9. The device for detecting the force transmission coefficient of an endoscopic surgical forceps according to claim 8, characterized in that The first handle fixer and the second handle fixer are detachably arranged on the third installation block and the first force sensor, and the first handle fixer and the second handle fixer have a plurality of groups, and the sizes of the plurality of groups of the first handle fixer and the second handle fixer are inconsistent.

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