Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1994-05-02
1995-10-31
Cannon, James C.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
128DIG14, 216 58, 216 67, 20415761, 20415763, 20419211, 20419236, 427534, 427551, 427554, 427569, 428 364, 428 369, 428 3692, 428224, 4283084, 4283115, 428376, 428398, 428409, 428422, 600 36, 606231, 623 1, 623 8, 623 11, 623 12, 623 66, 623901, A61F 201, A61F 204, A61F 206, A61F 252, A61L 2700, B32B 3300
Patent
active
054627818
ABSTRACT:
An implantable porous expanded polytetrafluoroethylene material having a microstructure of nodes interconnected by fibrils wherein a surface of the material has been modified by the removal of fibrils from the surface so that under magnification the surface has the appearance of freestanding node portions not interconnected by fibrils but rather having open valleys disposed between the freestanding node portions. Unmodified material beneath the surface maintains the original microstructure of nodes interconnected by fibrils. The modification is preferably done by exposing the surface to radio frequency gas plasma discharge with a reactive etching gas for a lengthy amount of time such as about ten minutes. The depth of fibril removal from the surface is substantially a function of the duration and amount of energy applied to the surface.
REFERENCES:
patent: 4187390 (1980-02-01), Gore
Morra et al, Langmuir, 1989; 5; 872-876.
Cannon James C.
House Wayne D.
W. L. Gore & Associates, Inc.
LandOfFree
Surface modified porous expanded polytetrafluoroethylene and pro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface modified porous expanded polytetrafluoroethylene and pro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface modified porous expanded polytetrafluoroethylene and pro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1770923