Medical device formed of ultrahigh molecular weight polyolefin

Details Medical device formed of ultrahigh molecular weight polyolefin Medical device formed of ultrahigh molecular weight polyolefin

2005-05-10

2005-05-10

Kennedy, Sharon (Department: 3762)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C264S127000, C264S291000, C264S323000, C264S345000

Reexamination Certificate

active

06890395

ABSTRACT:
Medical devices having at least a component, such as a catheter balloon, stent cover and vascular graft, formed of ultrahigh molecular weight polyolefin, such as ultrahigh molecular weight polyethylene. The device component is formed from ultrahigh molecular weight polyethylene that has been processed so that it is microporous and has an oriented node and fibril structure. The device component expands compliantly at low strains and are substantially less compliant at higher strains. The invention also comprises methods for making such medical devices, including the steps of compacting a polyethylene powder and deforming it to impart the oriented structure.

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