In vitro test device and test method for fatigue performance of self-expanding tunnel stent

A technology for in vitro testing and fatigue performance, applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc.

Inactive Publication Date: 2011-12-14
SOUTHEAST UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Technical problem: In view of the diversity of sizes of existing self-expanding lumen stents and the complexity of various lumen peristalsis and peripheral vascul

Method used

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  • In vitro test device and test method for fatigue performance of self-expanding tunnel stent
  • In vitro test device and test method for fatigue performance of self-expanding tunnel stent
  • In vitro test device and test method for fatigue performance of self-expanding tunnel stent

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Embodiment Construction

[0021] The device for in vitro testing the fatigue performance of the self-expanding cavity stent of the present invention comprises four parts: a man-machine interface, a control device, an execution device and a machine vision device; the input terminal of the PC in the man-machine interface is connected to the image acquisition card in the machine vision device Output terminal, the output terminal of the PC is connected to the input terminal of the data acquisition card in the control device, the execution device mainly includes a loading device, a peristaltic device and a thermostat, the data acquisition card controls the operation of the execution device, and the machine vision device collects the operation signal of the execution device .

[0022] The execution device is composed of a loading device, a peristaltic device and a thermostat; the loading device includes a fixed splint, a bracket, a group of wires arranged in parallel, a moving splint and a vertical lifting me...

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Abstract

The in vitro test device and test method for the fatigue performance of the self-expanding cavity stent is a complete set of methods suitable for testing the fatigue performance parameters of the stent in vitro. The self-expanding cavity stent fatigue performance testing device is mainly composed of four parts: man-machine Interfaces, controls, actuators, and machine vision. The PC of the human-machine interface is connected to the output port of the data acquisition card and the input port of the image acquisition card. The data acquisition card controls the operation of the execution device. The execution device mainly includes a loading device, a peristaltic device and a thermostat. The loading device is arranged in parallel The wires are used to fix the stent, and the stent is loaded to simulate the long-term radial annular contraction pressure of various lumens on the stent.

Description

technical field [0001] The invention relates to the fatigue performance of a self-expanding lumen stent, and belongs to the technical field of medical device performance testing. Background technique [0002] For most patients with tumors or other lesions in non-vascular lumens such as esophagus, intestinal tract, and biliary tract, the early symptoms are not obvious, and the chance of radical surgery is often lost when they are discovered in the late stage. Lumen obstruction symptoms, to restore smooth, is the most important treatment. At present, stent placement is a good palliative treatment method for improving the quality of life of patients and prolonging the life of patients. [0003] For various self-expanding stents used in human lumens, its function is to expand benign or malignant narrow lumens caused by lesions or trauma, such as esophagus, biliary tract, intestinal tract and blood vessels. The stent has a diameter larger than the target lumen, is compressed an...

Claims

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Application Information

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IPC IPC(8): G01M13/00
Inventor 龙志红顾兴中易红倪中华金富康倪晓宇
Owner SOUTHEAST UNIV
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