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Viscoelastic memory and self-expansion of self-reinforced bioabsorbable stents

Paper ID Volume ID Publish Year Pages File Format Full-Text
13297 849 2002 8 PDF Available
Title
Viscoelastic memory and self-expansion of self-reinforced bioabsorbable stents
Abstract

The possibility to decide the speed and rate of expansion of stents is of great clinical importance by reason of the varying requirements for different indications to use stents. Self-reinforced bioabsorbable stents can be made self-expanding owing to the viscoelastic memory of the material. Stents are stable at room temperature and expansion occurs at body temperature. The level at which the expansion stops depends on the material, crystallinity, initial diameter of spiral and annealing temperature. The expansion rate can be estimated by logarithmic equation, if material, draw ratio and diameter of stent wire are constant. This is, however, possible only if processing parameters are constant. Based on the present results annealing temperature and expansion time were seen to be directly proportional to the expansion rate of the stent.

Keywords
Bioabsorbable; Polymer; Stents; Viscoelastic memory; Self-expansion
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Viscoelastic memory and self-expansion of self-reinforced bioabsorbable stents
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 23, Issue 17, September 2002, Pages 3575–3582
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us