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Medical alloy and stent

An alloy, medical technology, applied in medical science, surgery, etc., can solve problems such as excessive rebound of stents

Pending Publication Date: 2021-06-11
SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a single austenitic alloy material with excellent biocompatibility, and the stent prepared by the alloy material can solve the technical problem of excessive rebound of the stent in the prior art

Method used

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  • Medical alloy and stent
  • Medical alloy and stent
  • Medical alloy and stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 12

[0074]

[0075] The Profile test comparison curves of the corresponding cardiovascular stent products of different stent materials (Co-based alloy and iron-based alloy of the present invention) are shown in figure 1 , where the abscissa is the time (the unit is week, week), and the ordinate is the radial rebound size (the unit is inch, inch). The test is performed once a week for a total of 67 weeks, that is, the data test period is about 1.3 years. Wherein, embodiment 12 alloy stent Profile-1, embodiment 12 alloy stent Profile-2 are respectively 2 parallel samples of the alloy stent prepared by the medical alloy of embodiment 12; Comparative example 2 alloy stent Profile-1, comparative example 2 alloy Stent Profile-2 is two parallel samples of alloy stents prepared from the medical alloy of Comparative Example 2. From figure 1 It can be seen from the figure that the profile of the alloy of the present invention is significantly smaller than that of the Co-based alloy L605...

Embodiment 14

[0077] Embodiment 14: alloy density test

[0078]

[0079]

Embodiment 15

[0080] Embodiment 15: Corrosion resistance test

[0081] The present invention further tests the corrosion resistance of cardiovascular stent products corresponding to different stent materials. Among them, the alloy stent sample 1 of Example 12, the alloy stent sample 2 of Example 12, and the alloy stent sample 3 of Example 12 are three parallel samples of the alloy stent prepared by using the medical alloy of Example 12 above. Alloy stent sample 1 of Comparative Example 2, alloy stent sample 2 of Comparative Example 2, and alloy stent sample 3 of Comparative Example 2 are three parallel samples of alloy stents prepared from the medical alloy of Comparative Example 2, respectively. The obtained corrosion resistance diagram is as follows image 3 As shown, where the abscissa is the current, current, Log(i / A); the ordinate is the voltage, Potential, E(V).

[0082] From image 3 It can be seen that the corrosion resistance of the alloy cardiovascular stent of the present inve...

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Abstract

The invention relates to a medical alloy. The medical alloy comprises the following ingredients of, in percentage by weight, 9.0Wt%-16.0Wt% of manganese, 12.0Wt%-20.0Wt% of chromium, 1.8Wt%-5.0Wt% of molybdenum, 0.3Wt%-1.0Wt% of nitrogen, not more than 0.3Wt% of nickel, 10.0Wt%-25.0Wt% of X and the balance iron, and the X is selected from one or combination of the following metals of platinum, iridium and tungsten. The invention discloses a stent at the same time.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201911174468.1 and the invention title "Medical Alloy and Stent" filed with the China Patent Office on November 26, 2019, the entire contents of which are incorporated herein by reference. technical field [0002] The invention relates to the technical field of medical devices, in particular to a medical alloy and a bracket. Background technique [0003] Cardiovascular disease represented by atherosclerosis has become the primary factor threatening life worldwide. For patients with moderate and severe coronary heart disease, the minimally invasive interventional treatment of percutaneous transluminal coronary angioplasty (PTCA) combined with coronary stenting (coronary stenting) has less trauma, quicker recovery, and a wide range of applications. It is one of the hotspots and the most effective treatment methods for coronary heart disease treatment. [0004] In 1977, Gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/44C22C38/02C22C38/48C22C38/22C22C38/26C22C38/38A61L31/02
CPCC22C38/001C22C38/58C22C38/44C22C38/002C22C38/02C22C38/48C22C38/22C22C38/26C22C38/38A61L31/022
Inventor 王姣姣姚瑶周奇李俊菲庞璐
Owner SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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