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medical stents

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001841
EISBN: 978-1-62708-241-9
... deflection amplitudes at near-resonance conditions can result in fatigue crack initiation and growth. A medical device manufacturer noted occasional strut fractures during balloon expansion tests associated with the validation of a new stent geometry. These stents had been subjected to typical...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006811
EISBN: 978-1-62708-329-4
... to the success or failure of a medical device Fig. 8 Scanning electron microscopy micrographs showing (a) fatigue fracture surface in a nitinol stent and (b) fracture origin emanating from a surface inclusion Fig. 6 Scanning electron microscopy image showing microvoid coalescence...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006836
EISBN: 978-1-62708-329-4
... nickel-titanium shape memory alloys used in medical devices and surgical implants. A nitinol stent subjected to an unintentionally long ultrasonic cleaning treatment fractured during bend testing ( Ref 11 ). SEM analysis showed that striations were present on the fracture surface, indicating...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001690
EISBN: 978-1-62708-226-6
... on Nitinol has shifted to its superelastic behavior, and there are several applications in the medical device industries, including hip implants, bone spacers, bone staples, bone anchors, skull plates, vascular and nonvascular stents, and medical guidewires. 29 , 30 Nitinol alloys contain...