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Recyclable heart stent

A heart stent and main body technology, which is applied in the field of recyclable heart stents, can solve the problems of inflammatory reaction, non-recyclable heart stent, stimulation of blood vessels, etc., achieve fast curing speed, flexible solid-liquid phase transition, and reduce difficulty

Inactive Publication Date: 2018-02-02
YUNAN JINGCHUANG LIQUID METAL THERMAL CONTROL TECH RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a recyclable heart stent to solve the problem that the existing heart stent is not recyclable and will stimulate blood vessels to produce inflammatory reactions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 , 2 As shown, a recyclable cardiac stent provided in this embodiment includes a stent main body and a heating device. The stent main body is made of solidified liquid metal, and the surface of the stent main body is coated with a drug film, and the heating device is used for heating the stent main body.

[0034] The specific process will be described in further detail below.

[0035] The stent main body 2 coated with the drug film 1 reaches the vascular blockage site through cardiac stent interventional surgery; when the operation fails or there is a need to take out the stent main body 2, the heating device can be used to heat the position of the stent main body 2; reaching the melting point of liquid metal Finally, the stent body 2 changes from a solid state to a liquid state, and a catheter is used to suck out the liquid metal from the blood vessel to realize recovery.

[0036] Wherein, the heating device is an induction heating device, a microwave h...

Embodiment 2

[0043] This embodiment is basically the same as Embodiment 1. For the sake of brevity, in the description process of this embodiment, the same technical features as Embodiment 1 will not be described, and only the differences between this embodiment and Embodiment 1 will be described:

[0044] like image 3 , 4 As shown, in the recyclable heart stent provided by this embodiment, the main body 2 of the stent is an interconnected regular hexagonal network structure.

[0045] This embodiment provides a recyclable cardiac stent. The main body of the stent is an interconnected regular hexagonal network structure, so that the main body of the stent is fully in contact with the inner wall of the blood vessel, and the stress between the two is increased. The fixing ability is strong, it is not easy to shift, and the mechanical strength High, suitable for some parts that can bear a large load.

[0046] Biocompatibility means that a material elicits the appropriate response in a speci...

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Abstract

The present invention provides a recyclable heart stent, which comprises a stent body and a heating device, the stent body is prepared by curing a liquid metal, the surface of the stent body is coatedwith a drug film, and the heating device is used for heating the stent body. The recyclable heart stent has the advantages of flexible liquid metal solid-liquid phase conversion, fast liquid metal curing speed and stable mechanical property after curing; if the recyclable heart stent needs to be taken out, the position where the stent body is located is heated by local heating, so that the liquidmetal is transformed into a liquid state, and is completely sucked out of blood vessels by a catheter to achieve recovery. The liquid metal is good in biocompatibility, anti-thrombosis, corrosion-resistant and non-damage to vessel walls, and avoids inflammatory reaction caused by stimulating of the blood vessels. In addition, the surface of the stent body is coated with the drug film, the concernthat the stent body acts as a foreign body to stimulate a local tissue can be eliminated, and the normal growth of tissues around contact areas between the stent body and the arteries can be ensured.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a recoverable heart stent. Background technique [0002] Heart stent, also known as coronary artery stent, is a commonly used high-value consumable medical device that needs long-term intervention in the heart and has physiological and mechanical functions consistent with the beating heart. The role of heart surgery and future stabilization of the disease has a vital purpose. [0003] At present, cardiac stents have gone through the development process of metal stents, coated stents, and dissolvable stents. At present, the development of the third-generation stents is not yet mature, and the market is still dominated by the second-generation coated stents. The main materials are stainless steel, nickel-titanium alloy or cobalt-chromium alloy. [0004] For patients with myocardial infarction, stent implantation is an immediate treatment. However, the current heart stent...

Claims

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Application Information

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IPC IPC(8): A61L31/18A61L31/16A61L31/14A61L31/02A61F2/82A61F2/90
CPCA61F2/82A61F2/90A61F2250/0067A61L31/022A61L31/14A61L31/16A61L31/18A61L2300/216
Inventor 张海洋盛磊刘静
Owner YUNAN JINGCHUANG LIQUID METAL THERMAL CONTROL TECH RES & DEV CO LTD
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