Method for preparing cardiovascular drug eluting stent

A drug coating and cardiovascular technology, which is applied in the direction of drug devices, cardiovascular system diseases, pharmaceutical formulations, etc., can solve the problem that the coating is easy to fall off, so that it is not easy to fall off, improves the infiltration and spreadability, improves the uniformity and The effect of binding firmness
CN1569270AActive Publication Date: 2005-01-26SHANGHAI REBONE BIOMATERIALS +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI REBONE BIOMATERIALS
Publication Date
2005-01-26

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Abstract

A process for preparing cardiovascular stent with a drug coating layer on its surface is disclosed. It includes the steps of: 1. pretreatment for the stent surface by plasma 2. dipping or spraying of the stent surface in routine method by hyperplasia proof drug and coating polymer containing solution The drug coated stent prepared by the present invention can endure long period washing by all kinds of stress and body fluid in the stent transportation and dilation process, with the coating layer not easy to falling off.
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Description

technical field

[0001] The invention relates to a medical material for interventional therapy, in particular to a preparation method for a stent with a drug coating on the surface for interventional therapy of human coronary heart disease. technical background

[0002] The concept of PTCA (Percutaneous transluminal coronary angioplasty, PTCA) was proposed in 1964 and Gruentzing successfully implemented the first case of PTCA in 1977, creating a new era of human interventional cardiology. PTCA is an innovative technique that does not require surgery and bleeding, which can greatly reduce the pain of patients. At that time, due to the limitations of equipment and technical level, the indication was single-vessel coronary artery disease, and the success rate was only 70%. In the 1980s, with the development of catheter technology and the improvement of operating technology, especially the advent of balloon catheters with controllable and movable guide wires, the indications for...

Claims

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