关键词: 人工气管, 生物材料, 气管支架, 镍钛记忆合金, 顺应性

Abstract:

OBJECTIVE: To evaluate the performance and application of tracheobronchial stent materials, to find a more safe and effective tracheal stent materials.
METHODS: Using “artificial airway, tracheal stent, biological material” in Chinese and “trachus, bronchus, stent” in English as the key words, a computer-based online search of Pubmed database (http://www.ncbi.nlm .nih.gov/PubMed) and the VIP database (http://www.cqvip.com/) from January 1995 to October 2008 was performed by the first author for articles about tracheal stent biomaterials, repeated study or Meta analysis were excluded. Eighteen articles mainly focused on the types and properties of tracheobronchial stent materials.
RESULTS: A total of more than 50 articles were screened out, 18 of them were involved in the evaluation after reading the title, abstract and full text, including 16 English literatures and 12 Chinese literatures. Various materials for tracheal stent have their characteristics, and cannot be completely denied. Nickel-titanium shape memory alloy stent is most used in China, which has been widely used for the treatment of airway stenosis due to various reasons, can be radially stretched, at this time the diameter becomes thinner and easy to load into catheter. After release, it automatically return to the original diameter, indicating a good compliance, and can be placed in various parts of the airway, better relieve short breath symptoms, so as to reduce the suffering of patients.
CONCLUSION: In recent years, artificial tracheal stents are rapidly developing, and metal stents even more. Nickel-titanium shape memory alloy stent is the ideal scaffold material, it is safe, reliable, easy to operate and affordable, has been widely used in treatment of various types of airway stenosis.