Unlock instant, AI-driven research and patent intelligence for your innovation.

Multifunctional testing device for penetrating performance of artificial blood vessel

A technology for testing devices and artificial blood vessels, which is used in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems of water inlet pressure and insufficient stability, so as to achieve the effect of low maintenance cost, saving the space occupied by the device, and reducing the experimental error.

Inactive Publication Date: 2017-11-07
NANTONG TEXTILE & SILK IND TECH RES INST
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the device described in the Chinese Patent Publication No. CN1460847A utilizes the gravity of a certain height water column to meet the static pressure of 120 mmHg, but this method is greatly affected by the gravity field, and ensures a certain pressure by flowing water, which is not stable enough; in addition , the device cannot test the overall water permeability and water inlet pressure
Such as the device for the overall water permeability of artificial blood vessels described in Chinese Patent Publication No. CN105021510A, the pressure of the device is controllable, and it is used to test the overall water permeability of artificial blood vessels, but it cannot be used to test the cross-sectional permeability and water permeability of artificial blood vessels. Inlet pressure, and the shape and size range of the sample to be tested has a certain

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multifunctional testing device for penetrating performance of artificial blood vessel
  • Multifunctional testing device for penetrating performance of artificial blood vessel
  • Multifunctional testing device for penetrating performance of artificial blood vessel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see Figure 1 to Figure 3 , figure 1 It is a structural schematic diagram of a multifunctional artificial blood vessel permeability testing device described in Example 1 of the present invention; figure 2 It is an enlarged schematic diagram of a cross-sectional test port of a multifunctional artificial blood vessel permeability testing device described in Embodiment 1 of the present invention; image 3 It is an enlarged schematic diagram of the overall test port of a multifunctional artificial blood vessel permeability testing device described in Example 1 of the present invention. Such as figure 1As shown, the water tank 9 used for testing in this device has a main body made of plexiglass, and the length, width and height need to be controlled between 40 and 50 cm; the air intake pipe 13 on the water tank 9 is provided with an air intake valve and The air pressure valves 14 and 15 that control the air pressure can stabilize the air pressure at a set value; the wate...

Embodiment 2

[0048] see Figure 4 , Figure 4 It is a schematic diagram of the water tank structure of a multifunctional artificial blood vessel permeability testing device described in Example 2 of the present invention. Such as Figure 4 Shown, change the original water tank 9 structure to be the water tank 26 of stepped structure, control the height of liquid level constant. Basically the same as the original parts, change the position of the water inlet 18 to the position of the water inlet 24, change the position of the corresponding first water valve 19 to the first water valve 25, change the position of the water guide pipe 7 to the position of the water guide pipe 27, and the position of the air intake pipe 13 The position is basically consistent with the position of the intake pipe 23 . The pressure at a certain point on the bottom of the water is only related to the vertical water surface height corresponding to this point, so as long as the water surface height at a certain p...

Embodiment 3

[0052] see Figure 5 , Figure 5 It is an enlarged schematic diagram of the cross-sectional test port of a multifunctional artificial blood vessel permeability testing device described in Embodiment 3 of the present invention, as Figure 5 As shown, the cross-section test port of the artificial blood vessel permeability test can be connected with the nut 28 by screws, and sealed with a silica gel gasket in the middle, so that a simple water-tight cross-section test port can be made. The test port only needs to cut the sample into a simple square or circle to be clamped and tested, and will not affect the tissue structure of the artificial blood vessel wall.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a multifunctional testing device for penetrating performance of an artificial blood vessel. The multifunctional testing device comprises a test switch, an integral water permeability testing device, a section water permeability testing device, a water receiver, a water guide pipe, a water pressure meter, a water tank, a water outlet, a water inlet, an air inlet, an air outlet, an air inlet pipe, an air pressure valve, an air pump, a buoyancy piston and a water valve, wherein a switch of the air inlet is closed after the testing is started and has good closing-sealing property; the pressure of water is changed through adjusting an air pressure adjuster at the air inlet and can be read out by virtue of a pressure meter; in a section water permeability testing process, a second test switch is opened, and a first test switch is closed; in an integral water permeability and water inlet pressure testing process, the first test switch is opened, and the second test switch is closed; in a testing process, a switch of a second water valve is always in a closing state until the testing is finished and is opened to discharge water. The multifunctional testing device can be used for measuring the section water permeability, integral water permeability and water inlet pressure of the artificial blood vessel online and is convenient to operate, simple in structure and easy for repair and maintain.

Description

technical field [0001] The invention belongs to the field of testing instruments for biomedical materials and products, and in particular relates to a multifunctional artificial blood vessel permeability testing device, which aims to test the water permeability, overall water permeability and water ingress pressure of the pipe wall section of the artificial blood vessel. Background technique [0002] Blood vessels are important organs that transport blood, distribute blood, and exchange nutrients in the human body. When the vascular tissue in the human body becomes diseased, it is necessary to use the corresponding replacement artificial blood vessel and the artificial blood vessel for isolation. According to the international standard ISO 7198:2016, the artificial blood vessel must meet the clinical requirements of permeability. If the permeability is too large, it is easy to ooze blood; if it is too small, the material and nutrient exchange cannot be performed, and the blo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 李刚周书法刘泽堃韩植芬王晓沁
Owner NANTONG TEXTILE & SILK IND TECH RES INST