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Coronary artery medicinal-coating stent

A technology of drug coating and coronary artery, applied in stent, medical science, prosthesis, etc., can solve problems such as unsatisfactory overall effect

Inactive Publication Date: 2007-03-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above mechanism, the clinical use of antiplatelet drugs and anticoagulant drugs has greatly reduced the chance of thrombosis, and for neointimal hyperplasia, intravascular brachytherapy has also been tried in recent years, but the overall effect is not satisfactory

Method used

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  • Coronary artery medicinal-coating stent
  • Coronary artery medicinal-coating stent
  • Coronary artery medicinal-coating stent

Examples

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Embodiment Construction

[0023] A coronary drug-coated stent for inhibiting intimal proliferation and preventing in-stent restenosis, comprising: an expandable stent base 1, an inner coating 2 is coated on the expandable stent base 1, and the inner coating 2 Composed of drug carrier and ligustrazine, its mass ratio is: 3:1~1:3, in this embodiment, its mass ratio can be selected as 3:1, 1:3 or 2:2, the above-mentioned drug carrier is methyl acrylate ester, methyl methacrylate copolymer, polylactic acid (PLLA), polyglycolic acid, poly-racemic lactic acid, polylactide-glycolide polymer, phosphorylcholine, polyurethane, inorganic microporous A combination of one or more of aluminum oxide and cellulose. In this embodiment, the inner coating 2 can also be coated with an outer coating 3, and the outer coating 3 is methyl acrylate, methyl methacrylate copolymer, polylactic acid (PLLA), polyglycolic acid, poly-sterile A composition coating of one or more of spiral lactide, polylactide-glycolide polymer, phosp...

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Abstract

The present invention discloses a coronary artery medicine coating scaffold for inhibiting endometrial hyperplasia and preventing restenosis in the scaffold. It includes dilating scaffold base body and inner coating layer coated on the dilating scaffold base body, the above-mentioned inner coating layer is formed from medicine carrier and ligustrazine, their mass ratio is 3:1-1:3, the above-mentioned inner coating layer is one of methyl acrylate, methyl methacrylate copolymer, polylactic acid, polyglycollic acid, polymonoracemic lactic acid, polylactide-diglycolide polymer, phosphorylcholine, ethyl polyurethane inorganic micropore aluminium oxide and cellulose or their composite.

Description

technical field [0001] The invention relates to a stent implanted in a human body, in particular to a coronary drug-coated stent for inhibiting intima proliferation and preventing restenosis in the stent. Background technique [0002] In the past ten years, coronary artery stent implantation has become an important method with definite curative effect in the treatment of coronary heart disease, and it has been more and more widely used in the treatment of coronary heart disease. development of. [0003] Clarifying the pathophysiology and pathogenesis of in-stent restenosis is the key to preventing in-stent restenosis. In recent years, it has been agreed that the early stage of stent implantation can cause endothelial stripping, exposing components such as collagen, vWF factor, fibronectin and laminin to the blood, promoting platelet adhesion and aggregation, and forming thrombus in the stent; The injury to the vessel wall or the rupture of the lipid core after entry can ca...

Claims

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Application Information

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IPC IPC(8): A61L27/54A61L27/40A61L31/16A61L31/12A61F2/82
Inventor 马根山冯毅陈忠张晓黎丁澍陈立娟
Owner SOUTHEAST UNIV
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