High pressure resistant sacculus molding technology

A molding process and high-pressure-resistant technology, applied in the field of high-pressure-resistant balloon molding process, can solve the problems of patient health risks, expansion of stenotic lesions, etc., and achieve the effects of good memory performance and excellent high-pressure resistance performance.

Inactive Publication Date: 2010-08-25
SINO MEDICAL SCI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In case of complicated lesions or severe calcified lesions, when the existing balloon dilation catheter expands under the rated working pressure, it may not be able to completely dilate the stenotic lesion. At this time, the doctor needs to increase the pressure to achieve dilation and dredging. effect, the applied pressure will approach or exceed the rated burst pressure
If the balloon dilatation catheter leaks or bursts, it presents a serious risk to the patient's health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Put the balloon tube into the balloon mold, one end of the balloon tube is connected to 5bar pressure gas, and the other end is closed; the balloon mold is heated to 50°C in a water bath, and the internal balloon tube is heated and softened; one end of the balloon tube is heated 5bar pressure, the balloon tubing is expanded and deformed, and the outer wall of the balloon tubing is close to the inner wall of the balloon mold; during the heating and pressing process, the balloon tubing is stretched longitudinally at the same time; the balloon is cooled immediately after forming to obtain a durable High pressure balloon.

Embodiment 2

[0015] Put the balloon tube into the balloon mold, one end of the balloon tube is connected to 50bar pressure liquid, and the other end is closed; the balloon mold is heated to 200°C by electricity, and the internal balloon tube is heated and softened; one end of the balloon tube is heated The pressure of 50bar makes the balloon tubing expand and deform, and the outer wall of the balloon tubing is close to the inner wall of the balloon mold; during the heating and pressing process, the balloon tubing is stretched longitudinally at the same time; the balloon is cooled immediately after forming to obtain a durable High pressure balloon.

Embodiment 3

[0017] Put the balloon tube into the balloon mold, one end of the balloon tube is connected to 27.5bar pressure gas, and the other end is closed; the balloon mold is heated to 125°C by infrared, and the internal balloon tube is heated and softened; one end of the balloon tube is heated The pressure of 27.5 bar makes the balloon tube expand and deform, and the outer wall of the balloon tube is close to the inner wall of the balloon mold; during the heating and pressing process, the balloon tube is stretched longitudinally at the same time; the balloon is cooled immediately after forming High pressure resistant balloon.

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PUM

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Abstract

The invention relates to a high pressure resistant sacculus molding technology. Sacculus tubing is put into a sacculus mould, one end of the sacculus tubing is connected with high-pressure air or liquid, and the other end is sealed; the sacculus mould is heated, and the internal sacculus tubing is heated and softened; one end of the sacculus tubing is acted with high pressure to ensure that the sacculus tubing expands and deforms; the outer wall of the sacculus tubing is tightly stuck to the inner wall of the sacculus mould; in the heating and pressurizing process, the sacculus tubing is lengthways stretched; after being molded, the sacculus is cooled to prepare the sacculus of the invention. The sacculus prepared with the technology has thin and even wall and favorable excellent pressure resistant performance and memory performance.

Description

technical field [0001] The invention relates to a molding process of a high-pressure resistant balloon, in particular to a molding process of a catheter-type medical device balloon. Background technique [0002] In recent years, with the rise of interventional therapy technology, interventional medical devices have been increasingly used in interventional therapy in the fields of heart and peripheral blood vessels. At the same time, interventional medical devices also expose many problems in materials science or design structure. Taking balloon dilatation catheters as an example, the rated burst pressure of balloon dilation catheter products at home and abroad is set between 12-18bar, and doctors often need to pressurize balloon dilation catheters according to actual conditions during the actual operation. In case of complicated lesions or severe calcified lesions, when the existing balloon dilation catheter expands under the rated working pressure, it may not be able to co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20
Inventor 孙箭华李天竹蔡文彬康小然
Owner SINO MEDICAL SCI TECH INC
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