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Coronary artery edge protective stent

A coronary artery and edge protection technology, applied in the direction of stents, balloon catheters, etc., can solve the problems of local drugs that cannot reach the effective concentration, uneven drug distribution, and ineffective inhibition of intimal hyperplasia, so as to reduce drug-eluting stents Edge effect, suppression of hyperplasia, effect of reducing the chance of re-intervention of coronary artery

Pending Publication Date: 2020-11-20
中山大学附属第八医院
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Problems solved by technology

However, there is increasing evidence that drug-eluting stents have edge effects similar to radio-radiated stents.
The edge effect refers to the restenosis of blood vessels adjacent to both ends of the stent within a certain period of time after surgery. From the perspective of pharmacokinetics, it is currently believed that the drug distribution is uneven due to blood flow, so that the local drug cannot reach the effective concentration. ineffective in inhibiting intimal hyperplasia

Method used

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0020] see Figure 1-3 , an embodiment provided by the present invention: a coronary artery edge-protected stent, including a drug-eluting stent 1 and a drug-eluting balloon 2, the drug-eluting stent 1 includes a stent main body 3 and a delivery system 4, the drug-eluting stent The balloon 2 includes a balloon body 5 which is cylindrical in shape, a catheter 6 is arranged on one end of the balloon body 5 , and a plurality of filling grooves 7 are arranged on the outer wall of the balloon body 5 .

[0021] A method for operating a coronary artery edge-protected stent, comprising the following steps:

[0022] Step 1, first perform angiography on the coronary arteries;...

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Abstract

The invention discloses a coronary artery edge protective stent. The coronary artery edge protective stent comprises a drug-eluting stent and a drug-eluting balloon, wherein the drug-eluting stent comprises a stent body and a delivery system, the drug-eluting balloon comprises a balloon body, the balloon body is cylindrical, a catheter is arranged at one end of the balloon body, a plurality of filling grooves are formed in the outer wall of the balloon body. On the basis of treatment of coronary artery disease by original coronary artery drug-eluting stent implantation, the drug-eluting balloon is used to deliver an anti-proliferative drug to a key part of coronary artery drug-eluting stent implantation, the occurrence of the edge effect of the drug-eluting stent is reduced, the risk of edge restenosis of the stent for a patient is reduced, and the probability of percutaneous coronary intervention is decreased again.

Description

technical field [0001] The invention relates to the field of medical device-related products, in particular to a coronary artery edge-protecting stent. Background technique [0002] The emergence of drug-eluting stents has reduced the rate of in-stent restenosis after intervention. However, more and more evidence shows that drug-eluting stents have edge effects similar to radioactive stents. The edge effect refers to the restenosis of blood vessels adjacent to both ends of the stent within a certain period of time after surgery. From the perspective of pharmacokinetics, it is currently believed that the drug distribution is uneven due to blood flow, so that the local drug cannot reach the effective concentration. Thus, intimal hyperplasia cannot be effectively inhibited. Contents of the invention [0003] The purpose of the present invention is to provide a coronary artery edge-protected stent by applying a drug-eluting balloon on the edge of the stent to expand the edge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61M25/10
CPCA61F2/82A61M25/10A61M2025/105
Inventor 许文敏吴剑胜
Owner 中山大学附属第八医院
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