Balloon, balloon dilatation catheter and balloon preparation method

A technology for dilating catheters and balloons, which is applied in the direction of balloon catheters, etc., and can solve problems such as difficult to predict the actual position of the balloon, large outer diameter value, and difficult to pass through

Inactive Publication Date: 2017-05-31
SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The positioning of the balloon in existing balloon dilatation catheters requires contrast agents and imaging markers sleeved on the outside of the balloon to assist. , the relative positions of the visual markers are different for different sizes of balloons, so it is more difficult to predict the actual position of the balloon for a balloon with a single visual marker
In addition, balloons sleeved with visualization markers tend to have larger outer diameter values ​​at the visualization markers, making it difficult to traverse tortuous stenotic lesions

Method used

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  • Balloon, balloon dilatation catheter and balloon preparation method
  • Balloon, balloon dilatation catheter and balloon preparation method
  • Balloon, balloon dilatation catheter and balloon preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: Preparation of 1.50mm*20.0mm (diameter of the straight part of the balloon * length of the straight part of the balloon) imaging balloon dilatation catheter

[0041] The blend ratio Pebax70D: (BiO) 2 CO 3 =70:30 The blended material is extruded through the extrusion equipment to an original pipe with a size of 0.0205inch*0.0105inch (OD*ID), where OD is the outer diameter of the original pipe, ID is the inner diameter of the original pipe, and the balloon is selected for molding The mold length is a straight mold of 21.5 mm, the original pipe is put into the balloon forming mold, one end of the original pipe is fed with 35 atm high-pressure nitrogen, and the other end is closed. Heat the original tubing to 70 degrees, apply a pulling force of 100N to both ends, stretch 15mm at both ends at a stretching speed of 120mm / s, and form a straight part of the balloon, then stretch 5mm at both ends to obtain a ball The constriction of the balloon and the balloon t...

Embodiment 2

[0043] Embodiment 2: Preparation of 5.00mm*15.0mm (diameter of the straight part of the balloon * length of the straight part of the balloon) imaging balloon dilatation catheter

[0044] Extrude the blended material with the blend ratio Pebax70D:BiOCL=60:40 through the extrusion equipment to extrude the original pipe with a size of 0.0615inch*0.0350inch (OD*ID), and select a straight mold with a length of 16.0mm for the balloon forming mold , put the original tubing into the balloon forming mold, one end of the original tubing is fed with 28atm high-pressure nitrogen, and the other end is closed. Heat the original tubing to 95 degrees, apply a pulling force of 150N at both ends, and stretch 12mm at both ends at a stretching speed of 160mm / s. After forming the main part of the balloon, stretch 4mm at both ends to obtain a balloon cone. Department and balloon tube segment. Finally, the balloon is heated to 126 degrees and shaped for 45 seconds under a pressure of 30atm, and the...

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PUM

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Abstract

The invention provides a balloon, a balloon dilatation catheter and a balloon preparation method. The balloon comprises gradual contraction parts at two ends and a straight part in the middle, wherein a raw material for preparing the balloon is designed, so that the manufactured balloon has self-developing property; a developing sign does not need to be additionally arranged or a developing agent does not need to be used, but the actual position of the balloon can be obtained; and meanwhile, the balloon dilatation catheter has small crossing outer diameter and excellent ability of crossing circuitous lesions, so that doctors can operate with high proficiency in a surgery process.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a balloon, a balloon dilation catheter and a preparation method of the balloon. Background technique [0002] In the past ten years, with the aging population in my country and the increase in the incidence of diabetes, the prevalence of cardiovascular and cerebrovascular and peripheral blood vessels has also been increasing. In vascular diseases, arterial stenosis will directly endanger the life safety of patients. In the 1970s, balloon dilatation technology appeared. Under the guidance of medical imaging equipment, the balloon catheter was inserted into the narrow part of the blood vessel by percutaneous puncture technology, and the balloon was expanded under strict monitoring to make the blood vessel The stenosis is expanded to restore the diameter of the lumen. Compared with traditional surgery, this method only needs local anesthesia and a small opening of 1-2mm. It...

Claims

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Application Information

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IPC IPC(8): A61M25/10
Inventor 徐亚鹏岳斌李俊菲
Owner SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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