镍钛合金心脑血管支架的加工与表面处理

doi:10.11896/cldb.25030211

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Abstract Nickel-titanium (NiTi) alloy stents have become indispensable in the treatment of cardiovascular and cerebrovascular diseases due to their super elasticity, shape memory effect, and exceptional biocompatibility. However, their clinical efficacy critically hinges on the compatibility between fabrication methodologies and surface modification strategies. This review systematically evaluates the technical characteristics of two predominant NiTi stent processing techniques——laser cutting and fine braiding, and their application-specific discrepancies in cardiac valve stents, coronary stents, peripheral stents, and cerebrovascular stents. Laser-cutting stents, featuring closed-loop architectures with high geometric precision, demonstrate superior radial supportive strength, rendering them optimal for valvular and coronary pathologies requiring mechanical stability. In contrast, fine braiding stents achieve structural reconfigurability through tunable braiding patterns, prioritizing compliance with the biomechanical demands of intracranial aneurysms and tortuous peripheral vasculature. Surface functionalization strategies are further customized for distinct clinical scenarios:valvular stents emphasize inorganic coatings with anti-calcification capacity, coronary stents predominantly center on drug-eluting coatings, peripheral stents integrate antibacterial and antithrombogenic functions, while cerebrovascular stents employ ultra-thin graft layers to ba-lance immediate anticoagulation with neurological safety. This paper reveals the deep correlation between process selection and clinical needs, providing a theoretical basis for the precise design and application adaptation of nickel titanium stents. It also looks forward to the development trends of composite processes, intelligent materials, and dynamic functional integration in the processing and surface treatment of nickel titanium alloy stents in the future.

Key words： nickel-titanium alloy vascular stent processing surface modification

Published: 25 February 2026 Online: 2026-02-13

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TB34

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	Articles by authors
	LI Jingtong
	HAN Rizheng
	JIN Wei
	CHEN Song
	ZHANG Xing
	BAI Yun

Cite this article:

LI Jingtong,HAN Rizheng,JIN Wei, et al. Processing and Surface Treatment of Nickel-Titanium (NiTi) Alloy Cardiovascular/Cerebrovascular Stents[J]. Materials Reports, 2026, 40(4): 25030211-10.

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https://www.mater-rep.com/EN/10.11896/cldb.25030211 OR https://www.mater-rep.com/EN/Y2026/V40/I4/25030211

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