Vascular Prostheses Performance Assessment of Vascular Prosthesis Failure

Wesolow, Adam

doi:10.1111/j.1525-1594.1986.tb02598.x

Cited by 2 publications

(1 citation statement)

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“…Early experience with conventional aortic prostheses during the 1960s and 1970s demonstrated some device failures directly due to problems with strength of materials. [24][25][26][27] This lesson might still be relevant in the investigation of aortic endografts today.…”

Section: Casementioning

confidence: 99%

Late Failures of Devices Used for Endovascular Treatment of Abdominal Aortic Aneurysm: What Have We Learned and What is the Task for the Future?

Beebe¹

2001

Perspectives in Vascular Surgery

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Since their introduction in 1991, endografts for the exclusion of abdominal aortic aneurysms have evolved by "learning from failures." As significant device failure modes are reported, manufacturers modify device design to improve effectiveness and durability based on analysis of clinical results. This article summarizes what has been learned from a variety of device failures with a view toward understanding the implications for future activity in the continuing development of endovascular technology. Secondary interventions have been used to improve late outcomes of many devices. Long-term durability remains an issue because the limited data on follow-up beyond 3 or 4 years show gradually accumulating device failures in ways that were not anticipated. The future of successful endografting requires more and longer-term follow-up data, better understanding of the interaction between aortoiliac morphology and device design, improved imaging techniques, development of physiologic methods for endograft assessment, investigation of adjunctive measures to control the abdominal aortic aneurysm (AAA) sac environment, and expansion of the dialogue between clinicians and industry.

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Section: Casementioning

confidence: 99%

Late Failures of Devices Used for Endovascular Treatment of Abdominal Aortic Aneurysm: What Have We Learned and What is the Task for the Future?

Beebe¹

2001

Perspectives in Vascular Surgery

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Porosity of porcine small‐intestinal submucosa for use as a vascular graft

Hiles

Badylak

Geddes

et al. 1993

J. Biomed. Mater. Res.

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The porosity of a vascular graft material has been suggested as a major factor affecting the rate and degree of neovascularization of newly implanted grafts, with higher porosities generally associated with better performance. The objective of this study was to determine the water porosity of a new vascular graft material, small-intestinal submucosa (SIS), and to compare the values to those reported for other common vascular graft materials. In addition, the porosity of SIS was investigated with respect to applied pressure and applied uniaxial tension. Both rectangular, flat specimens and tubular specimens of SIS were subjected to static water pressure, and water was collected as it passed through the SIS material. SIS has a typical porosity of 0.52 mL/min.cm-2 at an applied pressure of 120 mm Hg. Although porosity appeared to be unaffected by uniaxial tension, it increased in proportion to applied pressure at a rate of 4.8 x 10(-3) mL/min.cm-2/mm Hg. These low porosity values and the past success of SIS as a vascular graft material suggest that high-porosity materials are not required for implant success.

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Vascular Prostheses Performance Assessment of Vascular Prosthesis Failure

Cited by 2 publications

References 0 publications

Late Failures of Devices Used for Endovascular Treatment of Abdominal Aortic Aneurysm: What Have We Learned and What is the Task for the Future?

Late Failures of Devices Used for Endovascular Treatment of Abdominal Aortic Aneurysm: What Have We Learned and What is the Task for the Future?

Porosity of porcine small‐intestinal submucosa for use as a vascular graft

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