Stock material or miscellaneous articles – Composite – Of fluorinated addition polymer from unsaturated monomers
Patent
1987-04-28
1989-03-28
Swisher, Nancy A. B.
Stock material or miscellaneous articles
Composite
Of fluorinated addition polymer from unsaturated monomers
428422, 623 1, 623 11, 623 66, 427 2, A61F 124
Patent
active
048163392
ABSTRACT:
Biologically compatible materials capable of being formed into implants, comprising layers of poly(tetrafluoroethylene) and mixtures of poly(tetrafluoroethylene) and elastomer, having excellent compliance, strength, elasticity and suturability are disclosed. The materials are preferably prepared as implants or vascular grafts by co-extruding a relatively thin luminal layer of poly(tetrafluoroethylene) having a distinct fibral nodal microstructure within a layer of a mixture of poly(tetrafluoroethylene) and elastomer to impart elasticity to the implant. A preferred embodiment comprises a radially asymmetric composite vascular graft having a luminal layer of poly(tetrafluoroethylene), a second layer of poly(tetrafluoroethylene)/elastomer mixture, a third layer of elastomer, and a fourth layer of a monomer fibrous elastomer matrix with each layer having a distinctive pore size, pore shape and porosity to promote tissue ingrowth and periprosthetic tissue anchoring.
REFERENCES:
patent: 3527650 (1970-09-01), Block
patent: 4193138 (1980-03-01), Okita
patent: 4229838 (1980-10-01), Mano
patent: 4286341 (1981-09-01), Greer et al.
patent: 4718907 (1988-01-01), Karwoski et al.
Tu Roger H.
Wang Edwin
Baxter International Inc.
Drehkoff W. Dennis
Myers Richard L.
Schiffer Michael C.
Swisher Nancy A. B.
LandOfFree
Multi-layered poly(tetrafluoroethylene)/elastomer materials usef does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-layered poly(tetrafluoroethylene)/elastomer materials usef, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-layered poly(tetrafluoroethylene)/elastomer materials usef will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1658474