Analysis of selected utility properties of biomaterials used in coronary stents

• Autorzy: Jurkiewicz W. , Paszenda Z. , Basiaga M. , Walke W.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The study analysed influence of the selected functional properties of metallic biomaterials on selected functional properties of coronary stents used in invasive cardiology. Design/methodology/approach: Pitting corrosion resistance tests were performed by means of potentiodynamic method. Corrosion resistance tests were performed on the ground of registered anodic polarisation curves and Stern method. The research also comprised galvanic corrosion resistance tests with application of Evans method. Measurements were made with VoltaLab® PGP 201 system. Tests were performed in artificial blood plasma at the temperature T = 37.0±1°C and pH = 7.0±0.2. Measurements of fluoroscopic visibility with application of cardiovascular imaging system Integris 5000 by Philips were also performed. Findings: Application of Ta layer in composite stents made of Cr-Ni-Mo steel is an effective method used for improvement of their functional properties, and in particular of their fluoroscopic visibility, at the same time decreasing their corrosion resistance. It is of crucial meaning for increasing effectiveness and safety of low-invasive percutaneous transluminal coronary angioplasty. Practical implications: Improvement of fluoroscopic visibility of coronary stents is possible through application of materials with increased X-ray absorptivity for their production. Within this scope you can consider certain form of implant created as a whole from one biomaterial or mixture of two biomaterials (layer implants), on the assumption that one of them features greater X-ray absorptivity. Originality/value: Application of middle layer made of tantalum in composite stent does not influence initiation of galvanic corrosion process but it produces better fluoroscopic visibility that brings forth improved safety of coronary angioplasty.

Słowa kluczowe

EN

biomaterials; stent; corrosion resistance; fluoroscopy

PL

biomateriały; stent; odporność na korozję; fluoroskopia

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2013
• Tom: Vol. 56, nr 1
• Strony: 7--13
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Jurkiewicz W.

• DRG MedTek, ul. Wita Stwosza 24, 02-661 Warszawa, Poland

autor

Paszenda Z.

• Faculty of Biomedical Engineering, Department of Biomaterials and Medical Engineering Devices, Silesian University of Technology, ul. Gen. de Gaulle’a 66, 41-800 Zabrze, Poland

autor

Basiaga M.

• Faculty of Biomedical Engineering, Department of Biomaterials and Medical Engineering Devices, Silesian University of Technology, ul. Gen. de Gaulle’a 66, 41-800 Zabrze, Poland

autor

Walke W.

• Faculty of Biomedical Engineering, Department of Biomaterials and Medical Engineering Devices, Silesian University of Technology, ul. Gen. de Gaulle’a 66, 41-800 Zabrze, Poland

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