Date of download: 10/29/2017 Copyright © ASME. All rights reserved. From: Mechanical Evaluation of Polyvinyl Alcohol Cryogels for Covered Stents J. Med. Devices. 2010;4(3):031002-031002-6. doi:10.1115/1.4001863 Figure Legend: Uniaxial tensile test apparatus (left) and puncture test apparatus (right)
Date of download: 10/29/2017 Copyright © ASME. All rights reserved. From: Mechanical Evaluation of Polyvinyl Alcohol Cryogels for Covered Stents J. Med. Devices. 2010;4(3):031002-031002-6. doi:10.1115/1.4001863 Figure Legend: Typical stress-stretch ratio curves during uniaxial tension testing of a 10% and 20% PVA cryogel membrane (both at 0.1 mm/s). The ultimate stretch ratios fall within the lower half of typical BMS expansion range .
Date of download: 10/29/2017 Copyright © ASME. All rights reserved. From: Mechanical Evaluation of Polyvinyl Alcohol Cryogels for Covered Stents J. Med. Devices. 2010;4(3):031002-031002-6. doi:10.1115/1.4001863 Figure Legend: Puncture pressure versus probe displacement for two typical PVA cryogels. Puncture pressure was calculated by dividing the load by the cross-sectional area of the drilled hole. Probe displacement is given as a fraction of the test mandrel radius. A fractional displacement of 1.0 is set as the safety requirement.
Date of download: 10/29/2017 Copyright © ASME. All rights reserved. From: Mechanical Evaluation of Polyvinyl Alcohol Cryogels for Covered Stents J. Med. Devices. 2010;4(3):031002-031002-6. doi:10.1115/1.4001863 Figure Legend: Push-through displacement versus membrane thickness for all puncture tests. Push-through displacement does not depend on membrane thickness within the range tested. The dashed line represents the push-through displacement safety requirement.
Date of download: 10/29/2017 Copyright © ASME. All rights reserved. From: Mechanical Evaluation of Polyvinyl Alcohol Cryogels for Covered Stents J. Med. Devices. 2010;4(3):031002-031002-6. doi:10.1115/1.4001863 Figure Legend: Close-up view of an expanded PVA cryogel covered Express (top) and Palmaz Genesis stent (bottom)