A long term accelerating corrosion fatigue texting of coronary stents in vitro / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 398-401, 2008.
Artigo
em Chinês
| WPRIM
| ID: wpr-291225
ABSTRACT
According to the related standards, an in vitro corrosion fatigue testing of coronary stents was designed. The stents were fixed in the latex tubes, which were full of 0.9% saline solution, and radial stress was produced for simulating natural vessel. The accelerated fatigue test was performed with 4 x 10(8) cycles at a frequency of 60 Hz, which was equal to 10 years in vivo implantation. Twelve coronary stents made from stainless steel were adopted in the experiment. The bulk structure and surface morphology before and after testing were analysed by scanning electron microscopy. The structure damage and surface change caused by corrosion fatigue were identified and the probable reasons were proposed.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Aço Inoxidável
/
Fatores de Tempo
/
Materiais Biocompatíveis
/
Simulação por Computador
/
Teste de Materiais
/
Stents
/
Química
/
Análise de Falha de Equipamento
/
Corrosão
/
Modelos Cardiovasculares
Tipo de estudo:
Estudo prognóstico
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2008
Tipo de documento:
Artigo
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