Novel heart stent of improved structure

A heart stent and structure improvement technology, which is applied in the field of coronary stents, can solve the problems of unsatisfactory support performance and ductility flexibility of the heart stent, and achieve the effects of increasing the amount of drug application, reliable bending, and improving the use effect

Inactive Publication Date: 2019-03-08
刘永华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: in order to solve the technical problems of unsatisfactory supporting performance, ductility and flexibility of the existing heart stent, the present invention provides a novel heart stent with improved structure

Method used

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  • Novel heart stent of improved structure
  • Novel heart stent of improved structure

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a new type of heart stent with improved structure includes a multi-layer metal stent 1 and a connecting piece 2 connecting adjacent metal stents 1. The metal stent 1 is composed of a plurality of non-elastic first structures 1.1 and a plurality of The elastic second structure 1.2 is composed of circular and alternate connections. The first structure 1.1 and the second structure 1.2 are both bar-shaped and connected to form peaks 1.1.1 and troughs 1.2.1 respectively. The peaks 1.1.1 of the first structure 1.1 are arcs The radius is greater than the arc radius of the wave trough 1.2.1 of the second structure 1.2, the first structure 1.1 and the second structure 1.2 of the adjacent metal bracket 1 are arranged in the same direction and facing the same direction, the connecting piece 2 is strip-shaped, and one end of the connecting piece 2 is connected In the middle of the first structure 1.1 of one metal bracket 1 and the other end is connected t...

Embodiment 2

[0025] Such as figure 1 As shown, this embodiment is further optimized on the basis of embodiment 1, specifically:

[0026] The connecting piece 2 is wrapped with a biological coating 2.2, which is arranged on the semi-circular part of the third structure 2.1. The biological coating 2.2 is an antithrombotic agent and has a thickness of 650-1100 nanometers.

[0027] The biological coating 2.2 is set on the connector 2 instead of the metal stent 1. The metal stent 1 is the main stress-bearing part, which can ensure the supporting performance of the metal stent 1. The drug is set on the semicircular part, and the position is more clear and convenient. Manufactured, the semi-circular structure can also ensure that the amount of medicine set is sufficient; the thickness of the nano-unit level is used, and the coating film is more accurate.

Embodiment 3

[0029] Such as Figure 1 to Figure 2 As shown, this embodiment is further optimized on the basis of embodiment 2, specifically:

[0030] A plurality of tie wires 3 are added between adjacent metal brackets 1, and the tie wires 3 are arranged at intervals between adjacent connectors 2, and one end of the tie wires 3 is connected to the middle part of the first structure 1.1 of a metal bracket 1 And the other end is connected to the middle part of the first structure 1.1 of the next metal stent 1, the middle part of the tie wire 3 is bent back and forth multiple times, the number of bends is 2-4, and the tie wire 3 is provided with an antithrombotic agent.

[0031] The pull wire 3 can be in direct contact with the blood vessel, thereby assisting the metal stent 1 to play an effective supporting role, so that the blood can flow smoothly in the blood vessel, and the structure of bending back and forth improves the flexibility and increases the amount of drug application. Improve ...

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Abstract

The invention discloses a novel heart stent of an improved structure, and relates to the technical field of condenser devices. The technical problem that an existing heart stent is not ideal in supporting performance, ductility and flexibility is mainly solved. The novel heart stent comprises multiple layers of metal supports and connectors for connecting the adjacent metal supports. Each metal support is formed by cyclically and alternately connecting a plurality of first structures without elasticity and a plurality of second structures with elasticity, the first structures and the second structures are each in a strip shape and form crests and troughs respectively after being connected, and the crest circular arc radius of the first structures is larger than the trough circular arc radius of the second structures. The first structures and the second structures of the adjacent metal supports are oppositely and neatly arrayed and have the same direction. The connectors are each in a strip shape. The connectors between the adjacent metal supports are arranged at intervals and staggered with the connectors of the same metal supports. The middle of each connector is formed by connecting two staggered third structures, and the third structures are each in a semicircular shape. The novel heart stent has the advantages of being high in ductility and flexibility, stable, reliable andlong in service life.

Description

technical field [0001] The invention relates to the technical field of coronary stents, and more particularly relates to a novel cardiac stent with improved structure. Background technique [0002] Cardiac stent, also known as coronary artery stent, is a commonly used medical device in cardiac interventional surgery. On the basis of lumen balloon expansion, an internal stent is placed in the diseased segment to support the stenotic and occluded segment of the vessel, reducing the elastic recoil of the vessel and Reshaping has the effect of dredging arteries and blood vessels and restoring the normal transport function of blood vessels. However, when the body regards the stent as a foreign body, and regards the contact between the stent and the arterial membrane as a trauma area, the human body will repair it if there is a trauma. As a result, there will be an inflammatory reaction at the stent of the artery. Many patients, especially those with diabetes, develop severe sca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/915
CPCA61F2/915A61F2002/91558
Inventor 刘永华
Owner 刘永华
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