Preparation method of balloon of dilatation balloon catheter
The invention provides a balloon preparation method of an expansion balloon catheter, which comprises the following steps: mixing pebax granules, TPU granules and nanoscale barium sulfate to obtain blended granules; injecting the blended granules into a material blank through a high-pressure injecti...
Saved in:
Main Authors | , |
---|---|
Format | Patent |
Language | Chinese English |
Published |
29.04.2022
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The invention provides a balloon preparation method of an expansion balloon catheter, which comprises the following steps: mixing pebax granules, TPU granules and nanoscale barium sulfate to obtain blended granules; injecting the blended granules into a material blank through a high-pressure injection molding machine to obtain the material blank; the material blank is placed in a drying oven, constant-temperature preheating is conducted, the material blank is preheated to be crystallized, and the crystallinity is 70%-80%; putting the preheated material blank into a mold, and pressing to obtain a blastocyst for preparing the balloon; the blastocyst is fixed in an upper clamp and a lower clamp, the clamps are placed in a drying oven, the blastocyst is fixed and preheated, stretching is conducted at the speed of 10-20 mm/min, stretching is stopped when the stretching ratio is 5-6 times, the two clamps continue to clamp the blastocyst, natural cooling is conducted, and the blastocyst with the orientation degree b |
---|---|
Bibliography: | Application Number: CN202210104627 |