Film-shaped product penetrating power testing device

Abstract

The utility model relates to the technical field of medical tests, in particular to a membrane-shaped product penetrating power testing device which comprises a clamp. The needle holding clamp is fixed through the clamp; the fixing device is located under the needle holder and comprises a first fixing block, the upper portion of the first fixing block is connected with a second fixing block through a fastening assembly, the lower end of the first fixing block is fixedly connected with a mounting rod, and a first positioning hole is formed in the side wall of the mounting rod; one end of the supporting device is connected with a test bed, a second positioning hole is formed in the side wall of the supporting device, and the mounting rod is inserted into the supporting device and fixed through a positioning pin inserted into the first positioning hole and the second positioning hole; through the arrangement, the test device has the advantages of modular design, convenience in installation, low operation difficulty, convenience in storage and strong adaptability, the production and manufacturing cost is effectively reduced, the test efficiency is improved, and the test accuracy is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of membrane product penetration force test devices, belong to medical test technical field. BACKGROUND

[0002] As a kind of ideal shell surgical tissue repair membrane product, easy to penetrate easy to suture is one of its characteristics, commonly used suture strength is used to characterize the mechanical properties of membrane product. In general, suture strength test is used to reflect the mechanical situation when the membrane product is torn, but it cannot reflect whether the clinician can easily penetrate when suture the membrane product. And the existing test device is complex to operate, poor applicability, and there is a problem of poor test accuracy caused by external shaking. Therefore, a new membrane product penetration force test device is urgently needed to solve the above problems. SUMMARY

[0003] The utility model provides a kind of membrane product penetration force test device in view of the deficiency of prior art.

[0004] The technical scheme for solving the above technical problems of the utility model is as follows: a kind of membrane product penetration force test device, comprising: clamp, the clamp includes the installation part connected with the movable end of elevator and the clamping part articulated on the installation part;Needle holder, the needle holder is fixed by the clamp, which includes first clamp arm and second clamp arm articulated with the first clamp arm;Fixing device, the fixing device is located below the needle holder, including first fixed block, the first fixed block is connected with second fixed block above by fastening assembly, the center of the first fixed block and second fixed block is correspondingly provided with through hole, the lower end of the first fixed block is fixedly connected with mounting rod, the first positioning hole of the lateral wall of the mounting rod is provided with the first positioning hole of the lateral wall of the mounting rod, the axis of the positioning hole is perpendicular to the axis of the mounting rod;Support device, the support device is hollow rod structure, one end of the support device is connected with test table and its lateral wall is provided with the second positioning hole of the support device, the mounting rod is inserted into the support device and fixed by the positioning pin inserted into the first positioning hole and the second positioning hole.

[0005] Further, the mounting rod is provided with a threaded anti-moving block, and the anti-moving block can be movably abutted on the upper surface of the support device.

[0006] Further, the mounting rod is a hollow structure with open ends, and the inner diameter of the mounting rod is greater than the inner diameter of the through hole.

[0007] Further, the cross section of the mounting rod is circular or polygonal, and the cross section of the mounting rod is the same shape as the cross section of the support device.

[0008] Further, the fastening assembly comprises fastening holes formed on the first fixing block and the second fixing block, a fastening bolt is rotatably arranged in the fastening hole on the second fixing block, and the fastening hole on the first fixing block is provided with threads matched with the fastening bolt.

[0009] Further, the fastening assembly comprises fastening holes formed on the first fixing block and the second fixing block, the first fixing block is provided with first clamping blocks symmetrically arranged in the fastening hole, the second fixing block is rotatably provided with a fastening rod in the fastening hole, the fastening rod is symmetrically provided with second clamping blocks matched with the first clamping blocks on the outer surface, the first clamping blocks and the second clamping blocks are both provided with one side with a greater axial height than the other side, and the first fixing block and the second fixing block are fastened by rotating the fastening rod to make the first clamping blocks and the second clamping blocks matched.

[0010] Further, at least two groups of fastening assemblies are uniformly arranged around the through hole.

[0011] Further, a driving motor is arranged in the mounting portion, an adjusting screw is connected to the output end of the driving motor, the clamping portion comprises two first connecting rods hingedly connected to the mounting portion at one end, one end of each of two second connecting rods is hingedly connected to the other end of each of the two first connecting rods, and each of two clamping blocks is hingedly connected to the other end of each of the two second connecting rods, and the clamping blocks are provided with threaded holes matched with the adjusting screw.

[0012] Further, the first clamping arm and the second clamping arm are provided with anti-dropping clamping blocks matched with each other, and the contact surfaces of the two anti-dropping clamping blocks are provided with clamping strips.

[0013] Further, the height H1 of the second fixing block ranges from 5mm to 7mm, and the height H2 of the first fixing block is 2.8-3.2 times the height H1 of the second fixing block.

[0014] The utility model discloses the beneficial effect is:

[0015] (1) the test device modular design, convenient to install, the operation is difficult low, is convenient for saving, after completing the test, can fast disassembly separation, and strong adaptability, when needing to change test condition, only need to change the specific component alone according to test requirement, effectively reduce the production manufacturing cost, improve the test efficiency.

[0016] (2) by setting up the supporting device, make the fixed device get stable support, avoid the fixed device shaking in the process of pricking and lead to the test precision to be poor, and further improve the adaptability, when matching the fixed device of different size parameters can be stably supported. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The fixing device and the supporting device installation structure schematic view provided by the utility model have the advantages of simple structure, convenient use and high stability.

[0018] Figure 2 The fixing device sectional structure schematic view provided by the utility model has the advantages of simple structure, convenient use and high stability.

[0019] Figure 3 The clamp structure schematic view provided by the utility model has the advantages of simple structure, convenient use and high stability.

[0020] Figure 4 The needle holder clamp structure schematic view provided by the utility model has the advantages of simple structure, convenient use and high stability.

[0021] Figure 5 The fastening rod bottom view provided by the utility model embodiment 2 has the advantages of simple structure, convenient use and high stability.

[0022] Figure 6 The fastening rod front view provided by the utility model embodiment 2 has the advantages of simple structure, convenient use and high stability.

[0023] The mounting part 1, the clamping part 2, the needle holder clamp 3, the first fixed block 6, the second fixed block 7, the through hole 8, the mounting rod 9, the first positioning hole 10, the supporting device 11, the second positioning hole 12, the positioning pin 13, the anti-moving block 14, the fastening bolt 15, the adjusting screw 16, the first connecting rod 17, the second connecting rod 18, the clamping block 19, the adjusting block 20, the anti-coming-off block 21, the clamping strip 22, the fastening rod 23, the second clamping block 24 and the test bench 25. DETAILED DESCRIPTION

[0024] The specific embodiments of the utility model will be described in detail below. The utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, therefore the utility model is not limited by the disclosed specific embodiments.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terms used are only for describing specific embodiments, not for limiting the utility model.

[0026] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to a specific orientation, structure and operation, therefore cannot be understood as limiting the utility model.

[0027] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, term " install " " link " " connect " " set " should do broad sense understanding, for example, can be fixed link, set, also can be detachable connection, set, or integrally connected, set. For ordinary skilled in the art, can understand the concrete meaning of the above-mentioned term in the utility model according to specific circumstances.

[0028] Example 1

[0029] As Figures 1-4 The utility model provides a kind of membrane product penetration test device, comprising: clamp, the clamp includes with the installation part 1 of the movable end connection of elevator and the clamping part 2 articulated on the installation part 1;Hold needle clamp 3, the hold needle clamp 3 is fixed by the clamp, it includes first clamp arm 4 and the second clamp arm 5 articulated with the first clamp arm 4;Fixing device, the fixing device is located below hold needle clamp 3, including first fixed block 6, the second fixed block 7 is connected on the first fixed block 6 by fastening assembly, the first fixed block 6 and second fixed block 7 center are all correspondingly set through hole 8, the membrane product to be tested is placed between the first fixed block 6 and second fixed block 7 and is clamped by first fixed block 6 and second fixed block 7, the first fixed block 6 lower end is fixedly connected with installation rod 9, the first positioning hole 10 that is transversely through installation rod 9 is provided on the lateral wall of installation rod 9, the positioning hole axis is perpendicular to the installation rod 9 axis;Support device 11, the support device 11 is hollow rod structure, one end of the support device 11 is connected with test table 25 and its lateral wall is set with the second positioning hole 12 that is transversely through support device 11, installation rod 9 is inserted into the support device 11 and is fixed by the positioning pin 13 inserted in the first positioning hole 10 and the second positioning hole 12.

[0030] Need to point out that the elevator is the conventional technical means in the art, therefore, the fixture and the elevator are not shown in the figure, the fixture and the elevator are fixed in the form of clamping or screwing, and the specific structure of the connection between the fixture and the elevator can be designed based on the specific structure of the elevator to be connected, which will not be described here; The needle holder 3 is used for clamping the needle, and the needle is a straight needle or a bent needle (not shown in the figure). When the needle is a bent needle, the film-shaped product to be tested covers half of the area of the central through hole 8 of the first fixed block 6 and the second fixed block 7. The cross-sectional shape of the first fixed block 6 and the second fixed block 7 can be the same or different. In order to facilitate processing and storage, the cross-sectional shape of the first fixed block 6 and the second fixed block 7 is preferably the same. The first fixed block 6 is detachably connected to the second fixed block 7 through a fastening assembly. The through holes 8 on the first fixed block 6 and the second fixed block 7 are concentric and have the same inner diameter. According to different test conditions, first fixed blocks 6 and second fixed blocks 7 with different size parameters can be provided. The mounting rod 9 is fixed to the lower end of the first fixed block 6 by integral molding or welding. One end of the supporting device 11 is fixedly connected to the test table 25 by welding or screwing. The first positioning hole 10 and the second positioning hole 12 have the same shape. The cross-sectional shape of the positioning pin 13 is designed based on the shape of the first positioning hole 10 and the second positioning hole 12, which will not be described here.

[0031] Through the above settings, it plays a variety of roles. First, modular design, convenient installation, low operation difficulty, easy to save, after completing the test, it can be quickly disassembled and separated, and has strong adaptability. When the test conditions need to be changed, only the specific parts need to be replaced according to the test requirements, which effectively reduces the production cost and improves the test efficiency. Second, by providing the supporting device 11, the fixing device is stably supported, avoiding the shaking of the fixing device during the piercing process, which leads to poor test accuracy, and further improving the adaptability when matching fixing devices with different size parameters.

[0032] Specifically, as shown in Figures 1-2 , a threaded anti-moving block 14 is sleeved on the mounting rod 9, and the anti-moving block 14 can be movably abutted on the upper surface of the supporting device 11. It should be pointed out that the anti-moving block 14 can be moved up and down by rotating it, so as to move away from or abut against the upper surface of the supporting device 11, further ensuring stable support and improving test accuracy.

[0033] Specifically, as shown in Figure 2 , the mounting rod 9 is a hollow structure with open ends, and the inner diameter of the mounting rod 9 is greater than the inner diameter of the through hole 8. The mounting rod 9 is fixedly connected to the periphery of the through hole 8. Through this setting, not only the manufacturing cost is saved, but also the probability of damage caused by the contact between the needle and the mounting rod 9 during the test process is reduced.

[0034] Specific, the mounting rod 9 cross section shape is circular or polygonal, the mounting rod 9 cross section and the support device 11 cross section are same shape.By above setting, can avoid installation rod 9 radial swing in the test process, further improve the support, the embodiment of the utility model preferably cross section shape is circular, by this setting, both simplify production technology, reduce manufacturing cost, also can be installed, through rotating fixing device to coordinate the cooperation error between the first positioning hole 10 and the second positioning hole 12 due to machining.

[0035] Specific, as shown in Figures 1-2 The fastening assembly includes fastening holes opened in the first fixed block 6 and the second fixed block 7, and a fastening bolt 15 is rotatably arranged in the fastening hole of the second fixed block 7, and the fastening hole of the first fixed block 6 has a thread matched with the fastening bolt 15. The first fixed block 6 and the second fixed block 7 are connected by the fastening assembly, so that the film-shaped product to be tested is firmly fixed between the first fixed block 6 and the second fixed block 7, and the loosening of the film-shaped product during the test is avoided to affect the test accuracy. Preferably, not less than two groups of fastening assemblies are uniformly arranged around the through hole 8.

[0036] Specific, as shown in Figure 3 The mounting portion 1 is detachably provided with a reversible driving motor, the driving motor is prior art, not shown in the figure, the output end of the driving motor is connected with an adjusting screw 16, the clamping portion 2 includes two first connecting rods 17 hinged at one end to the mounting portion 1, the other ends of the two first connecting rods 17 are each hingedly connected with one end of a second connecting rod 18, the other ends of the two second connecting rods 18 are each hingedly connected with a clamping block 19, and the clamping portion 2 further includes an adjusting block 20 hingedly connected with the two second connecting rods 18 at two ends, and the adjusting block 20 is provided with a threaded hole matched with the adjusting screw 16. The driving motor drives the adjusting screw 16 to rotate, and then drives the adjusting block 20 matched with the adjusting screw 16 to move, so that the clamping block 19 is clamped or loosened by driving the adjusting block 20 to move.

[0037] Specific, as shown in Figure 4 The first clamping arm 4 and the second clamping arm 5 are provided with mutually matched anti-escape clamping blocks 21, and the contact surfaces of the two anti-escape clamping blocks 21 are each provided with a clamping strip 22. The clamping strip 22 is a plurality of protruding strip-shaped objects integrally formed on the anti-escape clamping block 21, and during installation, the anti-escape clamping block 21 is clamped between the two clamping blocks 19. Preferably, the contact surfaces of the anti-escape clamping block 21 and the clamping block 19 are also provided with clamping strips 22. By this arrangement, the lancet can be pre-clamped, avoiding the problem of lancet falling during installation, affecting test efficiency or causing personal injury, further ensuring the clamping stability of the test lancet, and further avoiding the influence of lancet loosening or shaking on the test result during the test.

[0038] Specifically, as shown in Figure 1 the second fixed block 7 height H1 is 5mm-7mm, and the first fixed block 6 height H2 is 2.8-3.2 times the second fixed block 7 height H1. Through the above relationship, it plays a role in further coordinating the stability of the test process. If the second fixed block 7 height H1 is less than 5mm, it will lead to insufficient structural strength, and stress fatigue will occur at the matching part of the fastening assembly, causing the second fixed block 7 to crack and damage, which is not conducive to reducing production and operation costs. If the second fixed block 7 height H1 is greater than 7mm, although the structural strength is improved, it is too thick and heavy, which not only leads to waste of manufacturing materials, but also limits the observation field during testing, increases the probability of collision damage of the needle, and also makes the fastening assembly size longer, increasing the probability of damage due to uneven stress distribution. By limiting the first fixed block 6 height H2 to be 2.8-3.2 times the second fixed block 7 height H1, it can not only ensure the stable connection of the first fixed block 6 and the second fixed block 7, but also ensure the test accuracy, and reduce the pressure stress on the support device 11.

[0039] Example 2

[0040] As shown in Figure 1 , 5 , 6, different from example 1, the fastening assembly includes fastening holes opened on the first fixed block 6 and the second fixed block 7, the fastening holes on the first fixed block 6 are symmetrically provided with first clamping blocks, and the fastening holes on the second fixed block 7 are rotatably provided with fastening rods 23, the outer surfaces of the fastening rods 23 are symmetrically provided with second clamping blocks 24 matched with the first clamping blocks, and the first clamping blocks and the second clamping blocks 24 are both one side axial height greater than the other side axial height. By rotating the fastening rod 23, the first clamping block and the second clamping block 24 are matched to fasten the first fixed block 6 and the second fixed block 7. It should be pointed out that during the rotation process, the first clamping block and the second clamping block 24 are in surface contact between the inclined surfaces. It can be understood that the first clamping block and the second clamping block 24 are structurally identical, so the first clamping block is not shown in the drawing.

[0041] Other structures are the same as example 1.

[0042] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not exhaustively listed, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0043] For those skilled in the art, without departing from the concept of the present application, a number of variations and improvements can be made, which all belong to the protection scope of the present application, and the protection scope of the present application is subject to the appended claims.

Claims

1. A device for testing the penetration power of a film-like product, characterized in that, The utility model relates to a kind of needle holding clamps and fixing devices, including: clamp, the clamp includes installation part connected with the movable end of elevator and clamping part articulated on the installation part;Hold needle clamp, the hold needle clamp is fixed by the clamp, including first clamp arm and second clamp arm articulated with the first clamp arm;Fixing device, the fixing device is located below the hold needle clamp, including first fixed block, second fixed block is connected with the first fixed block above by fastening assembly, the center of the first fixed block and second fixed block is correspondingly provided with through-hole, the lower end of the first fixed block is fixedly connected with installation rod, the lateral wall of the installation rod is provided with first positioning hole that passes through installation rod horizontally, the axis of the positioning hole is perpendicular to the axis of the installation rod;Support device, the support device is hollow rod structure, one end of the support device is connected with test table and the lateral wall of the support device is provided with second positioning hole that passes through support device horizontally, the installation rod is inserted into the support device and is fixed by positioning pin inserted in the first positioning hole and the second positioning hole. The installation rod is provided with anti-moving block of threaded connection, and the anti-moving block can be movably abutted on the upper surface of the support device. The installation rod is hollow structure with both ends being open, and the inner diameter of the installation rod is greater than the inner diameter of the through-hole. The cross section of the installation rod is circular or polygonal, and the cross section of the installation rod is the same shape as the cross section of the support device. The fastening assembly includes fastening holes provided in the first fixed block and the second fixed block, a fastening bolt is rotatably arranged in the fastening hole of the second fixed block, and the fastening hole of the first fixed block has a thread matched with the fastening bolt.

2. The film product penetration test apparatus according to claim 1, wherein The fastening assembly includes fastening holes provided in the first fixed block and the second fixed block, a fastening bolt is rotatably arranged in the fastening hole of the second fixed block, and the fastening hole of the first fixed block has a thread matched with the fastening bolt.

3. A film product penetration test apparatus according to claim 2, wherein At least two groups of fastening assemblies are uniformly arranged around the through-hole.

4. The film product penetration test apparatus according to claim 3, wherein The installation part is provided with a driving motor, the output end of the driving motor is connected with an adjusting screw, the clamping part includes two first connecting rods articulated at one end to the installation part, one end of each of two second connecting rods is articulated to the other end of each of the two first connecting rods, and each of two clamping blocks is articulated to the other end of each of the two second connecting rods, and the adjusting block is provided with a threaded hole matched with the adjusting screw.

5. The film product penetration test apparatus according to claim 1, wherein The first clamp arm and the second clamp arm are provided with anti-dropping blocks matched with each other, and the contact surfaces of the two anti-dropping blocks are provided with clamping strips.

6. The film product penetration test apparatus according to claim 1, wherein The height H1 of the second fixed block is in the range of 5mm-7mm, and the height H2 of the first fixed block is 2.8-3.2 times the height H1 of the second fixed block.

7. A film product penetration force testing apparatus according to claim 5 or 6, wherein ​ 8. The film product penetration test apparatus according to claim 1, wherein ​ 9. The film product penetration test apparatus according to claim 1, wherein ​ 10. The film product penetration test apparatus according to claim 1, wherein ​

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