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Device for testing antiwear performance of evaluating artificial blood vessel of inner cavity insulation and its test method

A technology for artificial blood vessels and intracavitary isolation, which is applied in the direction of measuring devices, testing wear resistance, and mechanical devices, etc. It can solve the problem that the artificial blood vessels used for intracavitary isolation are small in diameter and cannot provide ordinary fabric friction instrument samples, ordinary fabrics, etc. The movement mode of the friction instrument does not conform to the movement mode, etc., to achieve the effect of scientific evaluation

Inactive Publication Date: 2006-06-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] After reviewing domestic and foreign patent documents, no test device suitable for the wear resistance of artificial blood vessels for endoluminal isolation has been found, and the friction instrument for general fabrics cannot be used for testing artificial blood vessels for endoluminal isolation. , this is because first of all, the ordinary fabric friction instrument is the friction between two fabrics, not the friction between the metal and the fabric; secondly, the ordinary fabric friction instrument needs a larger sample size during the test, which is very important for the isolation of the cavity. It is difficult to use artificial blood vessels. The diameter of artificial blood vessels for intraluminal isolation is generally small, and cannot provide the samples required by ordinary fabric friction instruments; The movement of blood vessels in the body under the friction of metal stents

Method used

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  • Device for testing antiwear performance of evaluating artificial blood vessel of inner cavity insulation and its test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The specific operation steps for testing the wear resistance of artificial blood vessels for endoluminal isolation are as follows:

[0039] (1) Before the test, first check the state between the connecting rod 5 and the left and right rod end joint bearings 4, 4' and the slider with screw holes 6 and the front plate 23 with guide rails. If there is any movement that is not flexible enough, start Refuel and adjust in time before the test to avoid the error of the speed when the instrument is moving;

[0040] (2) The warp and weft density are 1000 threads / 10cm, and the woven plain fabric with a thickness of 0.08mm is used to make sample F, the length of sample F is cut into 6cm, and the radial expansion width of sample F is cut into 3cm;

[0041] (3) Spin down the metal friction rod 8 with external thread to press down the horizontal sample F to 5 mm, and then fix the position of the metal friction rod 8 with external thread with upper and lower fixing nuts 9, 9';

[004...

Embodiment 2

[0046] Its test procedure of carrying out abrasion resistance test is identical with embodiment 1, and difference is (1) will be 1400 / 10cm by warp density, and weft density is 1300 / 10cm, and the test of the woven twill fabric that thickness is 0.09mm The length of the sample F is 9cm, and the radial expansion width is 3.5cm. (2) The metal friction rod with external thread is 8 down-spinned and the horizontal sample F is 8mm. (3) The weight is 650g. (4 ) the frequency is 40Hz, (5) the test time is 50 minutes, (6) the friction stroke is 8cm;

[0047] Finally, the average value of the water penetration test data of 5 samples F is calculated to be 265.7ml / cm 2 / min, the test data is less than 300-400ml / cm of water penetration of artificial blood vessels recognized by the medical field 2 / min, 300~400ml / cm 2 / min, has good wear resistance and can be safely used on patients.

Embodiment 3

[0049] Its test procedure of carrying out abrasion resistance test is identical with embodiment 1, and difference is (1) with warp density being 1700 / 10cm, weft density being 1500 / 10cm, the test of the woven twill fabric that thickness is 0.10mm The length of the sample F is 12cm, and the radial expansion width is 4cm. (2) The metal friction rod with external thread is 8 down-spinned and the horizontal sample F is 10mm. (3) The weight is 800g. (4) The frequency used is 50Hz, (5) the test time is 60 minutes, (6) the friction stroke is 10cm;

[0050] Finally, the average value of the water penetration test data of 5 samples F is calculated to be 286.4ml / cm 2 / min, the test data is less than 300-400ml / cm of water penetration of artificial blood vessels recognized by the medical field 2 / min, has good wear resistance and can be safely used on patients.

[0051] It can be seen from the above examples that the present invention can scientifically evaluate the durability of the art...

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Abstract

A device for testing wear ¿C resistance property of artificial blood vessel used for intracavity isolation consists of motor, box, crank cam, oscillating bearing on left and right rod end, link, sliding block with screw hole, T ¿C form friction frame with screw hole, metal friction rod with external thread, top and bottom fixing nut, left and right test sample support, test sample holder, weight and frequency transformer. A method for testing wear ¿C resistance property of said blood vessel is also disclosed.

Description

Technical field: [0001] The invention belongs to the field of textile testing, and relates to a testing device and a testing method for evaluating the wear resistance of an artificial blood vessel used for intracavity isolation. Background technique: [0002] With the development of my country's economy and the improvement of people's living standards, the incidence of vascular diseases (such as abdominal aortic aneurysm AAA) caused by "rich diseases" such as hypertension, diabetes and arteriosclerosis continues to rise. Various vascular diseases have become a major killer of human health. In the past forty years, artificial blood vessels have been widely used in the fields of vascular tumors, trauma, and organ reconstruction. [0003] Abdominal aortic aneurysm is a tumor that grows on the main artery of the blood vessel at the lower end of the heart. It is the most common type of arterial dilatation. A section of the abdominal aorta is spherical or fusiform. Generally, sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N19/00
Inventor 王璐杨文亮
Owner DONGHUA UNIV