Puncture force testing device of puncture outfit

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a puncture force testing device of a puncture outfit. The utility model provides a puncture outfit puncture force testing device, which aims at solving the problem that in the prior art, a puncture outfit puncture force test is carried out by being matched with a universal testing machine, and comprises a puncture outfit fixing device used for locking a puncture outfit and a bottom plate fixedly connected to the lower section of the universal testing machine. The puncture outfit fixing device is connected to the upper section of the universal testing machine through a linear driving mechanism, the bottom plate is fixedly connected with a testing platform used for placing a testing material, and the testing platform is located between the puncture outfit fixing device and the bottom plate. The linear driving mechanism can drive the puncture outfit fixing device 1 to move in the vertical direction and enable the puncture outfit to penetrate into a test material or be pulled out of the test material. The device is simple in structure and convenient to disassemble and assemble, and simple movement of experimental materials can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a puncture force testing device of a puncture device. Background Art

[0002] Laparoscopic surgery is the mainstream of minimally invasive surgery and has broad development prospects in the future. In laparoscopic surgery, various instruments and tools in the trocar need to be punctured before they are introduced into the abdominal cavity to provide a channel for the surgical instruments; whether the puncture force of the trocar is qualified is related to the difficulty of the doctor's surgery, so the puncture force performance of the trocar needs to be tested before it is put on the market to see if it meets the requirements.

[0003] The universal testing machine is an instrument used for mechanical property testing. It is commonly found in laboratories of various manufacturers. The instrument can be used to measure the mechanical properties of products by fixing the puncture device and test materials using a fixing device.

[0004] A Chinese invention patent discloses a device for detecting the puncture force of a puncture device [application number: CN202310521558.3]. The invention includes a workbench, and support columns are fixedly installed on the top outer wall of the workbench near the four corners, and the same top plate is fixedly installed on the top outer wall of the four support columns, characterized in that a support component is arranged at the center of the top outer wall of the workbench, and the support component is used for pressure test sensing, and the top outer wall of the workbench is provided with card slots on both sides of the support component, and the inner walls of the two card slots are provided with clamping mechanisms, and a detection mechanism is arranged on the bottom outer wall of the top plate, and the detection mechanism includes a lateral adjustment component, a pressure component and a fine-tuning component, and the fine-tuning component is used to fine-tune the distance of the puncture point and adjust the puncture angle. .

[0005] Although the invention has the function of testing the puncture force of the puncture device and adjusting the puncture direction, the invention has a complex structure and a single purpose, and has a high maintenance cost, and does not solve the problem of using the existing technical equipment universal testing machine to conduct a puncture force test of the puncture device. Summary of the invention

[0006] The purpose of the utility model is to solve the above problems and provide a testing device which can be used in conjunction with a universal testing machine to test the puncture force of a puncture device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a puncture force testing device of a puncture device, comprising a puncture device fixing device and a bottom plate for locking the puncture device, wherein the bottom plate is fixedly connected to the lower section of a universal testing machine, the puncture device fixing device is connected to the upper section of the universal testing machine through a linear drive mechanism, a test platform for placing a test material is fixedly connected to the bottom plate, the test platform is located between the puncture device fixing device and the bottom plate, and the linear drive mechanism can drive the puncture device fixing device to move in a vertical direction and make the puncture device pierce into the test material or be pulled out of the test material.

[0009] In the puncture force testing device of the puncture device as described above, the bottom surface of the bottom plate 3 is also provided with a sliding structure, and the bottom plate is slidably connected to the universal testing machine through the sliding structure.

[0010] In the puncture force testing device of the puncture device as described above, the sliding structure comprises a groove arranged on the bottom surface of the bottom plate and a panel slidably connected in the groove, and the panel is fixedly connected to the lower section of the universal testing machine.

[0011] In the puncture force testing device of the puncture device as described above, the grooves are provided with two grooves which are interconnected, and the two grooves are perpendicular to each other.

[0012] In the puncture force testing device of a puncture device as described above, the puncture device fixing device is composed of an adjustable top plate and an adjustable bottom plate, and the puncture device bottom plate has a puncture device sleeve through hole, which can be adapted to puncture devices of different specifications and sizes.

[0013] In the puncture force testing device of the puncture device as described above, the adjusting top plate and the adjusting bottom plate are provided with adjusting screw holes of the same specification around them, and the adjusting top plate and the adjusting bottom plate are adjustably connected via a limiting screw and a nut.

[0014] In the puncture force testing device of the puncture device as described above, an upper clamping plate is welded on the top of the adjusting top plate, the upper clamping plate is clamped and fixed to the linear drive mechanism, and a lower clamping plate is welded on the lower end of the inlay plate, and the lower clamping plate is clamped and fixed to the base of the universal testing machine.

[0015] In the puncture force testing device of the puncture device as described above, the test platform is connected to the bottom plate via a support.

[0016] In the puncture force testing device of the puncture device as described above, the test platform has a plurality of material positioning holes and a puncture hole for accommodating the puncture device to penetrate the test material portion, and the material positioning holes have corresponding positioning pins.

[0017] In the puncture force testing device of the puncture device as described above, the bottom plate has a locking hole, the panel has a matching hole, and the locking hole and the matching hole can be locked using fixing bolts of the same specification.

[0018] Compared with the existing technology, the advantages of the utility model are:

[0019] 1. The puncture force testing device provided by the utility model can be used in conjunction with a universal testing machine to measure the puncture force using the driving mechanism and mechanical measuring device of the universal testing machine.

[0020] The sliding structure provided by the utility model is easy to assemble and disassemble, and can realize the adjustment of the relative position between the experimental material and the puncture device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the working state structure of the utility model;

[0022] Figure 2 It is an exploded view of the utility model;

[0023] Figure 3 This is a schematic diagram of the bottom plate structure of the utility model;

[0024] Figure 4 It is a schematic diagram of the panel structure of the utility model;

[0025] In the figure: fixing device 1, test platform 2, bottom plate 3, panel 4, universal testing machine 5, pillar 6, screw hole 7, limit screw 8, nut 9, test material 10, positioning pin 11, fixing bolt 12, material positioning hole 21, puncture hole 22, groove 31, locking hole 32, lower clamping plate 41, matching hole 42, linear drive mechanism 51, universal testing machine base 52, puncture device c, adjusting top plate 1a, adjusting bottom plate 1b, upper clamping plate 1a1, puncture device sleeve through hole 1b1, sliding structure h. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The utility model is a puncture force testing device for a puncture device. Figure 1-2 As shown, the main body of the test device consists of a fixing device 1, a test platform 2, and a bottom plate 3. The fixing device 1 is connected to the linear drive mechanism 51 of the upper section of the universal testing machine 5 and locks the puncture device c. The bottom plate 3 is connected to the universal testing machine base 52 through a sliding structure h.

[0028] In the present utility model, when in use, the linear drive mechanism 51 of the universal testing machine 5 drives the fixing device 1 and thus drives the puncture device c to perform linear up and down motion; the test material 10 is fixed on the test platform 2. During the test, the linear drive mechanism 51 drives the fixing device 1 to drive the puncture device c to penetrate the test material 10. During the penetration of the test material 10, the reaction force applied by the test material 10 to the puncture device c is continuously transmitted to the universal testing machine 5 through the fixing device 1, and is received and analyzed by the built-in mechanical sensor thereof, thereby realizing the measurement of the puncture force of the puncture device.

[0029] Preferably, the fixing device 1 is composed of an adjustable top plate 1a and an adjustable bottom plate 1b, both of which are provided with screw holes 7 of the same specification. The puncture device c passes through the puncture device sleeve through hole 1b1 provided on the adjustable bottom plate 1b; the upper and lower spacings of the adjustable top plate 1a and the adjustable bottom plate 1b can be adjusted by the cooperation of the limit screw 8 and the nut 9, so that the upper part of the puncture device c is closely attached to the adjustable top plate 1a for force transmission.

[0030] The test platform 2 is connected to the base plate 3 via the support 6. Figure 3-4 As shown, a groove 31 is provided at the bottom of the base plate 3 to accommodate the panel 4 fixed to the base 52 of the universal testing machine. There are two grooves 31, which are perpendicular to each other; the base plate 3 and the panel 4 are slidably connected through the groove 31, and the two can achieve relative sliding in the front-back and left-right directions as needed. There are several locking holes 32 on the base plate 3, and several matching holes 42 on the panel 3. When moving to some specific positions, the base plate 3 and the panel 4 can be locked by passing the fixing bolts 12 through the locking holes 32 and matching holes 42 whose centers are in the same straight line, so as to fix the test platform 2 and the test material 10 thereon.

[0031] Preferably, the test material 10 is fixed by the positioning pin 11 penetrating the test material 10 and passing through the material positioning hole 21 .

[0032] Preferably, the test platform 2 is provided with a plurality of puncture holes 22 for the puncture device to pass through, so as to prevent the test platform 2 from being worn out too quickly.

[0033] Preferably, the bottom plate 3 and the test platform 2 are connected by pillars 6 to form a certain accommodation space to prevent the bottom plate 3 from being punctured by the puncture device.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although this article uses more terms such as fixing device 1, test platform 2, bottom plate 3, panel 4, universal testing machine 5, pillar 6, screw hole 7, limit screw 8, nut 9, test material 10, positioning pin 11, fixing bolt 12, material positioning hole 21, puncture hole 22, channel 31, locking hole 32, lower clamping plate 41, matching hole 42, linear drive mechanism 51, universal testing machine base 52, puncture device c, adjustment top plate 1a, adjustment bottom plate 1b, upper clamping plate 1a1, puncture device sleeve through hole 1b1, sliding structure h, etc., it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A puncture force testing device for a puncture device, characterized in that: The invention comprises a puncture fixture (1) for locking a puncture fixture (c) and a bottom plate (3), wherein the bottom plate (3) is connected to the lower section of a universal testing machine (5), and the puncture fixture (1) is connected to the upper section of the universal testing machine (5) via a linear drive mechanism (51). A test platform (2) for placing a test material (10) is fixedly connected to the bottom plate (3), and the test platform (2) is located between the puncture fixture (1) and the bottom plate (3). The linear drive mechanism (51) can drive the puncture fixture (1) to move in a vertical direction and enable the puncture fixture (c) to penetrate into the test material (10) or be pulled out of the test material (10).

2. A puncture force testing device for a puncture device as claimed in claim 1, characterized in that: The bottom surface of the bottom plate (3) is also provided with a sliding structure (h), and the bottom plate (3) is slidably connected to the universal testing machine (5) via the sliding structure (h).

3. A puncture force testing device for a puncture device as claimed in claim 2, characterized in that: The sliding structure (h) comprises a groove (31) arranged on the bottom surface of the bottom plate (3) and a panel (4) slidably connected in the groove (31); the panel (4) is fixedly connected to the lower section of the universal testing machine (5).

4. A puncture force testing device for a puncture device as claimed in claim 3, characterized in that: The grooves (31) are provided with two grooves (31) which are connected to each other, and the two grooves (31) are perpendicular to each other.

5. A puncture force testing device for a puncture device according to any one of claims 1 to 4, characterized in that: The trocar fixing device (1) is composed of an adjustable top plate (1a) and an adjustable bottom plate (1b), and the trocar bottom plate (1b) is provided with a trocar sleeve through hole (1b1).

6. A puncture force testing device for a puncture device as claimed in claim 5, characterized in that: The adjusting top plate (1a) and the adjusting bottom plate (1b) are provided with adjusting screw holes (7) of the same specification around their peripheries, and the adjusting top plate (1a) and the adjusting bottom plate (1b) are adjustably connected via a limiting screw (8) and a nut (9).

7. A puncture force testing device for a puncture device according to claim 6, characterized in that: An upper clamping plate (1a1) is welded to the top of the adjusting top plate (1a), and the upper clamping plate (1a1) is clamped and fixed to the linear drive mechanism (51). A lower clamping plate (41) is welded to the lower end of the insert plate (4), and the lower clamping plate (41) is clamped and fixed to the universal testing machine base (52).

8. A puncture force testing device for a puncture device according to claim 7, characterized in that: The test platform (2) and the base plate (3) are plugged together via pillars (6).

9. A puncture force testing device for a puncture device as claimed in claim 8, characterized in that: The test platform (2) has a plurality of material positioning holes (21) and a puncture hole (22) for accommodating a puncturer to penetrate a portion of the test material (10), and the material positioning holes (21) have corresponding positioning pins (11).

10. A puncture force testing device for a puncture device as claimed in claim 3, characterized in that: The base plate (3) has a locking hole (32), and the panel (4) has a matching hole (42). The locking hole (32) and the matching hole (42) can be locked using fixing bolts (12) of the same specification.

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