High pressure resistant sacculus molding technology

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...

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