A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 27/00 (2006.01) A61L 27/48 (2006.01) B29C 47/00 (2006.01) C08L 27/12 (2006.01) C08L 27/18 (2006.01) C08L 41/00 (2006.01)
Patent
CA 2146056
Synthetic composite materials for surgical implantation are disclosed which are manufactured from a fluoropolymer and a copolymer of a perfluorosulfonate and a perfluorinated monomer. The materials may be manufactured by coextrusion of the fluoropolymer and the perfluorosulfonate copolymer. Alternatively, the perfluorosulfonate copolymer may be attached to the surface of an extruded fluoropolymer material. Preferably, the fluoropolymer is polytetrafluoroethylene and the perfluorosulfonate copolymer is a copolymer of perfluro-3,6-dioxa-4-methyl-7-octane sulfonyl fluoride and tetrafluoroethylene. In a preferred embodiment a synthetic vascular graft is prepared from extruded and expanded polytetrafluoroethylene, coated with a perfluorosulfonate copolymer optionally converted to an alkali salt form and subsequently heated to a temperature above the crystalline melting point of polytetrafluoroethylene.
Lentz David J.
Patnaik Birendra K.
Zdrahala Richard J.
Meadox Medicals Inc.
Piasetzki & Nenniger Llp
LandOfFree
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