Partially covered stent used for treating bifurcation lesion coronary perforation and provided with biological absorption film

A covered stent and absorbing membrane technology, applied in stents, drug devices, other medical devices, etc., can solve problems such as influence, sealing and blocking of side branch blood vessels, achieve complete degradation and absorption, reduce the formation of thrombus, and achieve good adhesion sexual effect
CN108158701APending Publication Date: 2018-06-15TIANJIN CHEST HOSPITAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN CHEST HOSPITAL
Publication Date
2018-06-15

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Abstract

The invention relates to a partially covered stent used for treating bifurcation lesion coronary perforation and provided with a biological absorption film. The partially covered stent comprises a stent body composed of a tubular inner layer stent and a tubular outer layer stent, wherein the tubular inner layer stent and the tubular outer layer have identical length concentric line engraved nettedstructures, a tubular covering film is clamped between the inner layer stent and the outer layer stent, and the partially covered stent is characterized in that one end of the covering film is flushwith the stent body, and the length of the covering film accounts for 30-50% that of the stent body; the covering film is the biological absorption film; the biological absorption film is a poly-DL-lactic acid film. The partially covered stent has the advantages of being capable of covering a blood vessel perforation part to form a complete blood flow channel, effectively preventing closing and plugging of side branches, meanwhile easily realizing endothelialization in a stent body, and effectively reducing forming of thrombi.
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Description

technical field

[0001] The invention relates to the field of medical interventional treatment equipment, in particular to a partially covered stent with a bioabsorbable film used for treating coronary artery perforation in bifurcation lesions. Background technique

[0002] Coronary artery perforation, referred to as coronary perforation is a rare but very dangerous complication in percutaneous coronary intervention. After coronary perforation, the incidence of acute cardiac tamponade in patients is 17%-24%, and the rate of emergency surgery is 24%. %-36%, the mortality rate can reach 10% or higher. Current measures to deal with coronary perforation include: intravenous administration of protamine to neutralize heparin, intermittent balloon filling and closure at the perforation site, discontinuation of platelet glycoprotein IIb / IIIa receptor antagonists, embolization (coils, gelatin sponge, autologous Fat, thrombin, etc.), stent graft implantation and surgical operations. ...

Claims

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