Medical instrument strength detection device

By designing a medical device strength detection device including a platform, mounting vertical plate, telescopic flat pusher and a pressing table, the problem of staggered position of the detection point in the intensity detection of electrocoagulation surgical forceps or electrocoagulation surgical shears is solved, and high-precision and safe detection effect is achieved.

CN222704426UActive Publication Date: 2025-04-01CENT TESTING INT GRP CO LTD
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Patent Information

Application Number
CN202420911840.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-28
Publication Date
2025-04-01
Estimated Expiration
2034-04-28

AI Technical Summary

Technical Problem

In the prior art, the intensity detection of electrocoagulation surgical forceps or electrocoagulation surgical shears has the problem of staggering the detection point position, resulting in inaccurate detection and possible damage to the surgical instrument.

Method used

A medical device strength detection device is designed, including a platform, a mounting plate, a telescopic flat pusher and a pressing table. The supporting strip of the mounting plate supports the part to be tested, and the rear end of the part to be tested is pushed up by the telescopic flat pusher, so that the part to be tested is moved forward synchronously with the mounting plate until the pressure value detected by the detection head meets the preset strength requirements.

Benefits of technology

This device can ensure the accuracy and safety of detection, avoid the lifting and lifting of the parts to be tested during the stress process, improve the detection efficiency, and is suitable for parts to be tested of different specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a medical instrument intensity detection device, including platform, installation vertical plate, telescopic horizontal pushing piece and abutting platform, installation vertical plate rear side is connected with the bearing strip that is used for bearing the piece to be detected, is equipped with front vertical plate and rear vertical plate above platform, abutting platform is equipped with the rear side of front vertical plate, abutting platform is equipped with the detection head, the detection head is equipped with the telescopic horizontal pushing piece, and the telescopic horizontal pushing piece is equipped with the telescopic horizontal pushing piece. The telescopic horizontal pushing piece is connected to the front side of the rear vertical plate in the front-back direction and used for abutting against the rear side of the holding end of the to-be-detected piece and pushing the mounting vertical plate and the to-be-detected piece to synchronously move forwards till the to-be-detected piece abuts against the detection head. According to the medical instrument strength detection device provided by the utility model, the telescopic horizontal pushing piece on the rear vertical plate is used for pushing the rear end face of the to-be-detected piece, so that the to-be-detected piece and the mounting vertical plate synchronously move forwards until the to-be-detected piece is propped against the detection head of the propping table until a pressure value detected by the detection head meets a preset strength requirement; the structure is simple and convenient to operate, the detection precision is ensured, and the detection efficiency is improved.
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Description

Technical Field

[0001] The utility model belongs to the technical field of strength detection equipment, and more specifically, relates to a strength detection device for medical equipment. Background Art

[0002] When using laparoscopic surgery to treat patients, surgical tools such as electrocoagulation forceps and electrocoagulation scissors are often used. The above tools are mainly used to stop bleeding and remove tissues, and are commonly used in various minimally invasive surgeries and endoscopic surgeries. Electrocoagulation forceps are connected to the power supply through a socket, and high-frequency current is transmitted to the front working end of the forceps to produce an electrothermal effect, which heats the forceps and coagulates tissue, effectively stops bleeding and removes tissue, and is convenient for reducing the risk of bleeding and tissue damage. It eliminates the need for manual suturing in traditional surgery, reduces the incidence of postoperative infection and complications, and reduces the operation time and surgical trauma.

[0003] Before leaving the factory, the electrocoagulation surgical forceps or electrocoagulation surgical scissors need to be tested for structural strength of a single clamp body or scissor blade (collectively referred to as the test piece) to ensure that the component meets the standard strength requirements. In the prior art, the detection is often performed by pressing down the working end of the test piece with a detection head. However, since the thickness of the front end of the clamp body or the scissor blade is not consistent and has a tendency to gradually become thinner from back to front, the detection head is likely to cause the rear gripping end of the clamp body to be tested to move up when pressing down, resulting in positional displacement of the detection point, which not only affects the accuracy of the strength detection of the test piece, but also causes scratches and damage to the surface of the component, affecting the accuracy of the detection and the safety of the instrument. Utility Model Content

[0004] The utility model aims to provide a medical instrument strength detection device, which can conveniently detect the strength of surgical instruments and ensure the safety of the use of surgical instruments.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a medical device strength testing device, including a platform, a mounting plate, a telescopic push member and a pressure platform, the mounting plate is arranged above the platform, the plate surface of the mounting plate is arranged perpendicular to the front-to-back direction, the rear side of the mounting plate is connected with a supporting bar for supporting the piece to be tested, a front plate and a rear plate which are respectively arranged parallel to the mounting plate are arranged above the platform, the pressure platform is arranged on the rear side of the front plate, and a testing head which corresponds horizontally to the working end of the piece to be tested is arranged on the pressure platform, the telescopic push member is connected to the front side of the rear plate along the front-to-back direction, and is used to press against the rear side of the holding end of the piece to be tested, and push the mounting plate and the piece to be tested to move forward synchronously until the piece to be tested is in contact with the testing head.

[0006] In a possible implementation, a positioning shaft extending backward is provided on the mounting plate, and the positioning shaft is used to pass through the mounting hole of the piece to be tested to position the piece to be tested.

[0007] In some embodiments, the positioning shaft includes a shaft body and a limit platform connected to the rear end of the shaft body, the limit platform is arranged to protrude out of the shaft body toward the outer circumference, the mounting plate is provided with a positioning hole that slides with the limit platform and a sliding hole that slides with the shaft body, the positioning hole is provided with an elastic member that is sleeved on the outer circumference of the shaft body and abuts against the front end surface of the limit platform, the elastic member is used to elastically push the limit platform so that the limit platform protrudes backward from the mounting plate, and the shaft body is provided with a locking pin that extends radially and is located on the front side of the mounting plate.

[0008] In some embodiments, the limiting platform includes a first step, a second step, and a third step arranged in sequence from front to back, the first step is connected to the shaft body, the diameter of the second step is smaller than the first step, and the diameter of the third step is smaller than the second step;

[0009] The shaft body is provided with three radially penetrating locking holes, which are spaced apart along the axial direction of the shaft body, and the locking pin is used to penetrate into one of the locking holes.

[0010] In a possible implementation, the pressing platform is slidably connected to the front vertical plate in a horizontal direction, and the pressing platform is locked to the front vertical plate through a locking member.

[0011] In one possible implementation, a lever micrometer is also provided on the front side of the rear vertical plate for detecting the deformation of the workpiece to be tested. The lever micrometer is slidably connected to the rear vertical plate along the front-to-back direction. The lower part of the lever micrometer has a detection needle that can abut against the rear end surface of the workpiece to be tested. The lever micrometer is located on the side of the detection head away from the telescopic push member.

[0012] In some embodiments, a plurality of mounting guide columns extending forward are provided on the rear vertical plate, a mounting slide for mounting a lever micrometer is slidably connected to the mounting guide columns, and a telescopic drive member for pushing the mounting slide forward is provided on the rear vertical plate.

[0013] In one possible implementation, at least two telescopic push members are provided, and at least two telescopic push members are spaced apart along the extension direction of the supporting bar. A horizontally extending translation track is provided on the front side of the rear vertical plate, and the telescopic push member away from the pressure platform is slidably connected to the translation track.

[0014] In some embodiments, a pressing platform abutting against the rear end surface of the workpiece to be tested is disposed at the extended end of the telescopic push member, and the pressing platform is a rectangular plate-shaped component.

[0015] In a possible implementation, a sliding guide rail extending in the front-rear direction is provided on the platform, the mounting vertical plate is slidably connected to the top of the sliding guide rail, and a limit stop block is provided at the end of the sliding guide rail.

[0016] Compared with the prior art, the solution shown in the embodiment of the present application uses the supporting bar of the mounting vertical plate to support the workpiece to be tested, and uses the telescopic horizontal push member on the rear vertical plate to push the rear end surface of the workpiece to be tested, so that the workpiece to be tested and the mounting vertical plate are synchronously moved forward until the workpiece to be tested abuts against the detection head of the pressure platform until the pressure value detected by the detection head meets the preset strength requirement, and it is determined that the strength performance of the test piece to be tested meets the standard requirement, and then it is determined whether the workpiece to be tested is qualified. The above structure is simple and convenient to operate, and has high positioning accuracy, which avoids lifting and warping of the workpiece to be tested during the force application process, ensures detection accuracy, and improves detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the top view of the medical device strength detection device provided in an embodiment of the utility model;

[0019] Figure 2 For the utility model embodiment Figure 1 The partially enlarged structural diagram of middle Ⅰ;

[0020] Figure 3 For the utility model embodiment Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0021] Figure 4 For the utility model embodiment Figure 1 A schematic diagram of the main structure of a strength testing device for Chinese medical instruments;

[0022] Figure 5 For the utility model embodiment Figure 1 Schematic diagram of the left side structure of the strength testing device for traditional Chinese medical instruments.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Platform; 11. Front vertical plate; 12. Rear vertical plate; 13. Translation track; 14. Sliding guide rail; 15. Limit block; 2. Mounting vertical plate; 21. Positioning hole; 22. Sliding hole; 23. Support bar; 3. Telescopic push member; 31. Pressing platform; 4. Pressing platform; 41. Detection head; 42. Locking member; 5. Positioning shaft; 51. Shaft body; 52. Limiting platform; 521. First step; 522. Second step; 523. Third step; 53. Locking pin; 54. Locking hole; 55. Elastic member; 56. Push handle; 6. Lever micrometer; 61. Detection needle; 7. Mounting guide column; 71. Telescopic drive member; 72. Mounting slide; 8. Part to be tested; 81. Mounting hole. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model 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 utility model. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0027] Please also read Figures 1 to 5, the medical device strength testing device provided by the utility model is now described. The medical device strength testing device includes a platform 1, a mounting plate 2, a telescopic horizontal push member 3 and a pressing platform 4. The mounting plate 2 is arranged above the platform 1, and the plate surface of the mounting plate 2 is arranged perpendicular to the front-to-back direction. The rear side of the mounting plate 2 is connected with a supporting bar 23 for supporting the test piece 8. The platform 1 is provided with a front plate 11 and a rear plate 12 respectively arranged parallel to the mounting plate 2. The pressing platform 4 is arranged on the rear side of the front plate 11. The pressing platform 4 is provided with a detection head 41 corresponding to the working end of the test piece 8. The telescopic horizontal push member 3 is connected to the front side of the rear plate 12 along the front-to-back direction, and is used to press against the rear side of the gripping end of the test piece 8, and push the mounting plate 2 and the test piece 8 to move forward synchronously until the test piece 8 abuts against the detection head 41.

[0028] Compared with the prior art, the medical device strength testing device provided in the present embodiment supports the workpiece 8 to be tested by using the supporting strip 23 of the mounting vertical plate 2, and pushes the rear end surface of the workpiece 8 to be tested by using the telescopic horizontal push member 3 on the rear vertical plate 12, so that the workpiece 8 to be tested and the mounting vertical plate 2 are synchronously moved forward until the workpiece 8 to be tested abuts against the detection head 41 of the pressure platform 4, until the pressure value detected by the detection head 41 meets the preset strength requirement, and it is determined that the strength performance of the workpiece 8 to be tested meets the standard requirement, and then it is determined whether the workpiece 8 to be tested is qualified. The above structure is simple and convenient to operate, with high positioning accuracy, which avoids the lifting and tilting of the workpiece 8 to be tested during the force application process, ensures the detection accuracy, and improves the detection efficiency.

[0029] It should be noted that, for the convenience of description, the extension direction of the telescopic push member 3 is defined as the front, and the retraction direction is defined as the rear. When the test piece 8 is installed, the working end is installed at a position corresponding to the detection head 41 (the corresponding direction is right), and the gripping end of the test piece 8 is installed at a position away from the detection head 41 (the corresponding direction is left). The medical device strength testing device is mainly used to perform strength testing on the working end of a single clamp body or a single scissor blade.

[0030] In this embodiment, after the workpiece to be tested 8 is initially placed on the supporting bar 23, the telescopic push member 3 is used to contact the rear end surface of the holding end of the workpiece to be tested 8, so as to cooperate with the supporting bar 23 to limit the workpiece to be tested 8 and ensure that the workpiece to be tested 8 has good stability above the supporting bar 23.

[0031] During testing, the telescopic push piece 3 is used to further push the test piece 8 and the mounting plate 2 forward, so that pressure is generated between the front end surface of the working end of the test piece 8 and the detection head 41, and the pressure is gradually increased to the required pressure value, thereby realizing pressure testing of the test piece 8. The above structure is simple to operate, easy to use, and improves the convenience of testing.

[0032] In one possible implementation, see Figures 1 to 5A positioning shaft 5 extending backward is provided on the mounting plate 2 , and the positioning shaft 5 is used to penetrate into the mounting hole 81 of the test piece 8 to position the test piece 8 .

[0033] In this embodiment, the positioning shaft 5 provided on the mounting plate 2 is used to limit the position of the test piece 8 in the left and right directions. The test piece 8 has a mounting hole 81 for installing the rotating shaft. The positioning shaft 5 is passed through the mounting hole 81 to achieve effective limitation of the left and right positions of the test piece 8, thereby reducing the difficulty of positioning the test piece 8 during installation and improving the installation efficiency.

[0034] Furthermore, in order to make the above device applicable to test pieces 8 of different specifications, the support bar 23 can also be set to be adjustable up and down, so that the distance between the support bar 23 and the axis of the positioning shaft 5 is adjustable, thereby improving the applicability of the device.

[0035] For some examples, see Figures 1 to 5 The positioning shaft 5 includes a shaft body 51 and a limit platform 52 connected to the rear end of the shaft body 51. The limit platform 52 is arranged to protrude from the shaft body 51 toward the outer circumference. The mounting plate 2 is provided with a positioning hole 21 that slidably cooperates with the limit platform 52 and a sliding hole 22 that slidably cooperates with the shaft body 51. An elastic member 55 is provided in the positioning hole 21, which is sleeved on the outer circumference of the shaft body 51 and abuts against the front end surface of the limit platform 52. The elastic member 55 is used to elastically push the limit platform 52 so that the limit platform 52 protrudes backward from the mounting plate 2. The shaft body 51 is provided with a locking pin 53 that extends radially and is located on the front side of the mounting plate 2.

[0036] In this embodiment, the positioning hole 21 and the sliding hole 22 are coaxially arranged, and the positioning hole 21 is connected to the rear side of the sliding hole 22. The positioning shaft 5 is in the form of a combination of a shaft body 51 and a limit platform 52. The limit platform 52 is used to penetrate into the mounting hole 81 of the test piece 8. By adjusting the exposed length of the limit platform 52, it is ensured that the limit platforms 52 of different diameters match the size of the mounting hole 81 of the test piece 8, thereby meeting the positioning requirements of the test piece 8 in the left and right directions.

[0037] On the basis of the above structure, the limit platform 52 can be elastically pushed backwards by the elastic member 55 arranged in the positioning hole 21, and the axial position of the shaft body 51 is locked by means of the abutment between the locking pin 53 and the front side wall of the mounting plate 2, so that the protruding size of the limit platform 52 toward the rear side of the mounting plate 2 remains stable, which is convenient for the installation of the test piece 8 of the same specification.

[0038] Furthermore, a push handle 56 is provided at the front end of the shaft body 51 , so as to facilitate adjustment of the front and rear position of the positioning shaft 5 by operating the push handle 56 . The push handle 56 is a rod-shaped component extending radially along the shaft body 51 .

[0039] For some examples, see Figures 1 to 5The limiting platform 52 includes a first step 521, a second step 522 and a third step 523 arranged in sequence from front to back. The first step 521 is connected to the shaft body 51, the diameter of the second step 522 is smaller than the first step 521, and the diameter of the third step 523 is smaller than the second step 522.

[0040] In this embodiment, the limit platform 52 adopts a structure with different diameters, which can be suitable for the drilling of installation holes 81 with different diameters, realize the positioning of the test piece 8 in the left and right directions, improve the applicability of the structure, and meet the detection requirements of test pieces 8 of various specifications.

[0041] Correspondingly, the shaft body 51 is provided with three radially penetrating locking holes 54, which are arranged at intervals along the axial direction of the shaft body 51, and the locking pin 53 is used to penetrate into one of the locking holes 54. The three locking holes 54 correspond to the states when the first step 521, the second step 522 and the third step 523 are respectively protruded from the rear side wall of the mounting plate 2, and the corresponding locking hole 54 is selected according to the diameter of the mounting hole 81 of the test piece 8 itself, and then the axial position of the positioning shaft 5 is locked by the locking pin 53, so as to realize the reliable positioning of the test piece 8.

[0042] In one possible implementation, see Figures 1 to 5 The pressing platform 4 is slidably connected to the front vertical plate 11 in the horizontal direction, and the pressing platform 4 is locked with the front vertical plate 11 by a locking member 42. In order to meet the detection requirements of the test pieces 8 of different lengths, the pressing platform 4 can slide left and right relative to the front vertical plate 11, which is convenient for adjusting the left and right position of the detection head 41. The left and right position of the pressing platform 4 is locked by the locking member 42, which further improves the applicability of the device and can be applied to the strength detection of the test pieces 8 of different specifications.

[0043] In one possible implementation, see Figures 1 to 5 A lever micrometer 6 for detecting the deformation of the test piece 8 is also provided on the front side of the rear vertical plate 12. The lever micrometer 6 is slidably connected to the rear vertical plate 12 along the front-to-back direction. The lower part of the lever micrometer 6 has a detection needle 61 that can abut against the rear end surface of the test piece 8. The lever micrometer 6 is located on the side of the detection head 41 away from the telescopic push piece 3.

[0044] On the basis of using the detection head 41 to detect the structural strength of the working end of the test piece 8, the lever micrometer 6 is also used to detect the structural deformation size of the test piece 8. Before the detection, the detection needle 61 below the lever micrometer 6 is used to press against the rear end surface of the working end of the test piece 8, and the telescopic horizontal push piece 3 is used to apply a forward thrust. At this time, under the action of the detection head 41, if the right end of the test piece 8 is deformed backward, it will act on the detection needle 61. At this time, the lever micrometer 6 can be used to read and display. If the above reading is within the required range, the deformation is qualified. If it exceeds the required range, the deformation is judged to be unqualified. This is used as another standard for judging the quality of the test piece 8, which improves the accuracy of the detection.

[0045] For some examples, see Figures 1 to 5 , a plurality of installation guide posts 7 extending forward are provided on the rear vertical plate 12, and an installation slide 72 for installing the lever dial gauge 6 is slidably connected to the installation guide post 7, and a telescopic driving member 71 for pushing the installation slide 72 forward is provided on the rear vertical plate 12. The installation slide 72 and the lever dial gauge 6 are driven to move forward and backward by the telescopic driving member 71, and the installation slide 72 and the lever dial gauge 6 can be moved backward during the non-detection period to avoid the test piece 8, so as to facilitate the installation and positioning of the test piece 8, and avoid bumping the lever dial gauge 6 and the detection needle 61.

[0046] In one possible implementation, see Figures 1 to 5 At least two telescopic push members 3 are provided, and at least two telescopic push members 3 are arranged at intervals along the extension direction of the supporting bar 23. A horizontally extending translation track 13 is provided on the front side of the rear vertical plate 12, and the telescopic push member 3 away from the pressure platform 4 is slidably connected to the translation track 13.

[0047] In this embodiment, two telescopic push members 3 are provided, which can perform multi-point pressure limiting on the left side of the test piece 8, so that the two telescopic push members 3 can synchronously push the installation plate 2 and the test piece 8 forward, avoid single-point force causing jamming between the installation plate 2 and the translation track 13, and improve the smoothness of the drive.

[0048] For some examples, see Figures 1 to 5 The extended end of the telescopic push member 3 is provided with a clamping platform 31 that abuts against the rear end surface of the test piece 8. The clamping platform 31 is a rectangular plate-shaped component. The clamping platform 31 provided at the outer end of the telescopic push member 3 can effectively increase the contact area with the rear end surface of the gripping end of the test piece 8, and avoid wear caused by excessive force on a local position of the test piece 8. The clamping platform 31 is a rectangular plate-shaped structure, which is convenient for matching the strip structure of the test piece 8, and is convenient for reducing the cross-sectional area of ​​the clamping platform 31 and reducing its material consumption.

[0049] In one possible implementation, see Figures 1 to 5The platform 1 is provided with a sliding guide rail 14 extending in the front-to-back direction, the mounting plate 2 is slidably connected to the top of the sliding guide rail 14, and a limit stopper 15 is provided at the end of the sliding guide rail 14. The sliding guide rail 14 provided on the platform 1 is used to guide the mounting plate 2 to move forward and backward, and the limit stopper 15 can prevent the mounting plate 2 from being separated from the sliding guide rail 14, and has a good limiting effect.

[0050] When the above-mentioned medical device strength testing device is used, the test piece 8 is installed on the supporting bar 23 of the mounting vertical plate 2, and the telescopic horizontal push piece 3 is used to push the test piece 8 forward, so that the test piece 8 and the mounting vertical plate 2 are synchronously moved forward until the test piece 8 abuts against the detection head 41 of the pressing platform 4, until the pressure value detected by the detection head 41 meets the preset strength requirement, and it is determined that the strength performance of the test piece 8 meets the standard requirements, and then it is determined whether the test piece 8 is qualified. In addition, the deformation of the test piece 8 is detected by the lever micrometer 6, and then it is assisted to judge whether the quality of the test piece 8 is qualified. The above-mentioned structure is simple and convenient to operate, ensures the detection accuracy, and improves the detection efficiency.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical device strength testing device, characterized in that: The invention comprises a platform (1), a mounting plate (2), a telescopic push member (3) and a pressing platform (4), wherein the mounting plate (2) is arranged above the platform (1), the plate surface of the mounting plate (2) is arranged perpendicular to the front-rear direction, the rear side of the mounting plate (2) is connected to a supporting bar (23) for supporting a test piece (8), and a front plate (11) and a rear plate (12) are arranged above the platform (1) and are respectively arranged parallel to the mounting plate (2). The pressing platform (4) is arranged at the rear side of the front vertical plate (11), and a detection head (41) is provided on the pressing platform (4) corresponding to the working end of the workpiece (8) to be tested. The telescopic horizontal push member (3) is connected to the front side of the rear vertical plate (12) along the front-to-back direction, and is used to press against the rear side of the gripping end of the workpiece (8) to push the mounting vertical plate (2) and the workpiece (8) to move forward synchronously until the workpiece (8) to be tested abuts against the detection head (41).

2. The medical device strength testing device according to claim 1, characterized in that: The mounting vertical plate (2) is provided with a positioning shaft (5) extending backwards, and the positioning shaft (5) is used to penetrate into the mounting hole (81) of the test piece (8) to position the test piece (8).

3. The medical device strength testing device according to claim 2, characterized in that: The positioning shaft (5) comprises a shaft body (51) and a limiting platform (52) connected to the rear end of the shaft body (51); the limiting platform (52) is arranged to protrude from the shaft body (51) toward the outer circumference; the mounting vertical plate (2) is provided with a positioning hole (21) slidably matched with the limiting platform (52) and a sliding hole (22) slidably matched with the shaft body (51); an elastic member (55) is arranged in the positioning hole (21) and is sleeved on the outer circumference of the shaft body (51) and abuts against the front end surface of the limiting platform (52); the elastic member (55) is used to elastically push the limiting platform (52) so that the limiting platform (52) protrudes backward from the mounting vertical plate (2); the shaft body (51) is provided with a locking pin (53) extending radially and located at the front side of the mounting vertical plate (2).

4. The medical device strength testing device according to claim 3, characterized in that: The limiting platform (52) comprises a first step (521), a second step (522) and a third step (523) which are arranged in sequence from front to back, the first step (521) is connected to the shaft body (51), the diameter of the second step (522) is smaller than that of the first step (521), and the diameter of the third step (523) is smaller than that of the second step (522); The shaft body (51) is provided with three radially penetrating locking holes (54), the three locking holes (54) are arranged at intervals along the axial direction of the shaft body (51), and the locking pin (53) is used to penetrate into one of the locking holes (54).

5. The medical device strength testing device according to claim 1, characterized in that: The pressing platform (4) is slidably connected to the front vertical plate (11) in a horizontal direction, and the pressing platform (4) is locked with the front vertical plate (11) via a locking member (42).

6. The medical device strength testing device according to any one of claims 1 to 5, characterized in that: The front side of the rear vertical plate (12) is also provided with a lever micrometer (6) for detecting the deformation of the test piece (8). The lever micrometer (6) is slidably connected to the rear vertical plate (12) along the front-to-back direction. The lower part of the lever micrometer (6) has a detection needle (61) that can abut against the rear end surface of the test piece (8). The lever micrometer (6) is located on the side of the detection head (41) away from the telescopic push piece (3).

7. The medical device strength testing device according to claim 6, characterized in that: The rear vertical plate (12) is provided with a plurality of installation guide columns (7) extending forward, the installation guide columns (7) are slidably connected with an installation slide (72) for installing the lever micrometer (6), and the rear vertical plate (12) is provided with a telescopic driving member (71) for pushing the installation slide (72) forward.

8. The medical device strength testing device according to any one of claims 1 to 5, characterized in that: At least two telescopic push members (3) are provided, and at least two telescopic push members (3) are arranged at intervals along the extension direction of the test piece (8). A horizontally extending translation track (13) is provided on the front side of the rear vertical plate (12), and the telescopic push member (3) away from the pressing platform (4) is slidably connected to the translation track (13).

9. The medical device strength testing device according to claim 8, characterized in that: The extended end of the telescopic push member (3) is provided with a pressing platform (31) that abuts against the rear end surface of the test piece (8), and the pressing platform (31) is a rectangular plate-shaped component.

10. The medical device strength testing device according to any one of claims 1 to 5, characterized in that: The platform (1) is provided with a sliding guide rail (14) extending in the front-rear direction, the mounting vertical plate (2) is slidably connected above the sliding guide rail (14), and a limit stopper (15) is provided at the end of the sliding guide rail (14).