Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Applying indicia or design
Patent
1991-08-28
1992-04-14
Pellegrino, Stephen C.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Applying indicia or design
264127, 264136, 264146, 264309, 264310, 428421, B32B 2700, B28B 1116, B29C 6700, B27J 500
Patent
active
051044005
ABSTRACT:
A vascular patch for closing an incision in a blood vessel includes a base layer of expanded polytetrafluoroethylene (PTFE) having an outer coating of an elastomeric, biocompatible material such as polyurethane to minimize suture hole bleeding. Suture guidelines are formed upon the ablumenal side of the PTFE base layer prior to application of the elastomeric coating to facilitate proper and consistent placement of sutures. A colorant is added to the elastomeric coating to identify the ablumenal side of the vascular patch. The vascular patch is made by mounting an expanded PTFE tube upon a mandrel and applying a water based PTFE ink as a helical stripe about the outer surface of the PTFE tube to form the suture guidelines. The striped PTFE tube is then dip-coated or spray-coated with the elastomeric coating to which the colorant has been added. The PTFE tube is slit to form a flat sheet from which vascular patches are cut.
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Berguer Ramon
Colone William M.
Della Corna Linda V.
Farnan Robert C.
Kowligi Rajagopal R.
Impra, Inc.
Jackson Gary
Pellegrino Stephen C.
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