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Non-stick syringe needles: Beneficial effects of thin film metallic glass coating.

ABSTRACT: This paper reports on the use of Zr-based (Zr53Cu33Al9Ta5) thin film metallic glass (TFMG) for the coating of syringe needles and compares the results with those obtained using titanium nitride and pure titanium coatings. TFMG coatings were shown to reduce insertion forces by ?66% and retraction forces by ?72%, when tested using polyurethane rubber block. The benefits of TFMG-coated needles were also observed when tested using muscle tissue from pigs. In nano-scratch tests, the TFMG coatings achieved a coefficient of friction (COF) of just ?0.05, which is about one order of magnitude lower than those of other coatings. Finite-element modeling also indicates a significant reduction in injection and retraction forces. The COF can be attributed to the absence of grain boundaries in the TFMG coating as well as a smooth surface morphology and low surface free energy.

SUBMITTER: Chu JP

PROVIDER: S-EPMC5004157 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Non-stick syringe needles: Beneficial effects of thin film metallic glass coating.

Chu Jinn P JP Yu Chia-Chi CC Tanatsugu Yusuke Y Yasuzawa Mikito M Shen Yu-Lin YL

Scientific reports 20160830

This paper reports on the use of Zr-based (Zr53Cu33Al9Ta5) thin film metallic glass (TFMG) for the coating of syringe needles and compares the results with those obtained using titanium nitride and pure titanium coatings. TFMG coatings were shown to reduce insertion forces by ∼66% and retraction forces by ∼72%, when tested using polyurethane rubber block. The benefits of TFMG-coated needles were also observed when tested using muscle tissue from pigs. In nano-scratch tests, the TFMG coatings ach ...[more]

PMID: 27573062

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