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A degradable personalized non-cylindrical biomimetic drug-eluting coronary stent

A coronary artery and drug technology, applied in the field of medical devices, can solve the problems that the material and structure of the coronary stent cannot meet the clinical application, and achieve the effect of reducing the rate of revascularization, reducing the mortality rate, and saving the overall cost

Active Publication Date: 2017-12-26
BEIJING ADVANCED MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is to provide a degradable personalized non-columnar bionic drug-eluting coronary stent to solve the problem that the material and structure of the coronary stent in the prior art cannot meet the clinical application.

Method used

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  • A degradable personalized non-cylindrical biomimetic drug-eluting coronary stent
  • A degradable personalized non-cylindrical biomimetic drug-eluting coronary stent

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Embodiment Construction

[0026] like figure 1 As shown, an angiogram of a case of clinical tapered coronary artery disease is given. The circled part of the coronary angiography in the figure shows the diffuse lesion of the patient's left main-anterior descending artery, but the diameter of the left main lumen is about 4.5cm, and the anterior descending The diameter of the branches is about 2.0cm, showing a cone-shaped lesion shape. For the lesion structure shown in the figure, if a traditional cylindrical metal coronary stent with the same lumen diameter at both ends is used for interventional treatment, if the conical coronary artery is implanted in this way, it may cause malapposition or dissection of the stent. The emergence of serious complications such as internal thrombosis and even myocardial infarction makes the treatment incomplete.

[0027] like figure 2 shown, given the reference and figure 1 Schematic diagram of the structure of a suitable coronary artery stent for the shown coronary ...

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Abstract

The invention belongs to technical field of medical instruments and particularly relates to an individual non-column-shaped bionic medicine eluting coronary stent manufactured with a degradable material. The stent is a degradable stent manufactured with the degradable biological material. The stent is composed of a plurality of closed wavy ring-shaped units which are fixedly connected to form a bridging reticular structure. The stent is divided into a proximal end and a distal end according to the implanting direction. When the stent is in an expanding state, the outer diameter of the proximal end of the stent is different from the outer diameter of the distal end of the stent. Development of the bionic degradable coronary stent is oriented to multiple patients with the coronary heart disease and conforms to the trend of individualized treatment, multiple defects caused by mismatching between the shape of the stent and the blood vessel are overcome to the greatest extent, the influence on the coronary artery due to long-term existence of a metal stent is avoided, and the stent has higher scientific, economic and social value.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a non-columnar personalized bionic drug-eluting coronary stent made of degradable materials, in particular to a tapered or special-shaped stent. Background technique [0002] Coronary heart disease is one of the common cardiovascular diseases, which has the characteristics of high morbidity, high mortality, high readmission rate, and many surgical complications. The treatment of coronary heart disease is the most important thing in the treatment of cardiovascular disease, and coronary intervention is an important method for the treatment of coronary heart disease. [0003] Coronary interventional therapy has gone through three milestone stages: simple balloon dilation, implantation of bare metal stents and implantation of drug-eluting stents. However, in the existing clinical methods of treating coronary heart disease through coronary intervention, both bare stents and d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/90
CPCA61F2/90A61F2002/91575A61F2210/00A61F2250/0039A61F2250/0067
Inventor 周玉杰马茜
Owner BEIJING ADVANCED MEDICAL TECH
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