Surgery – Male reproductory tract shields or birth control devices
Patent
1991-10-11
1994-08-09
Brown, Michael A.
Surgery
Male reproductory tract shields or birth control devices
128849, 514157, A61F 602, A61B 1900, A01N 5100
Patent
active
053356756
ABSTRACT:
A stress-softened thermoplastic elastomeric (TPE) film which has been subjected to tensional deformation comprising at least uniaxial strain, and having improved textural and thermal transmissivity characteristics, as compared to a native, unstretched material. Such stress-softened thermoplastic elastomeric film may be employed in a wide variety of articles, including condoms, finger cots, tubular bandages, and the like. Condoms comprising such stress-softened TPE film are described, including condoms having a main sheath comprising stress-softened and non-stress-softened areas in a pattern or other predetermined arrangement. A variety of methods and apparatus for forming stress-softened tubular articles of thermoplastic elastomeric film is disclosed.
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Hawley William D.
Wheeler, deceased Robert G.
Brown Michael A.
Family Health International
Hultquist Steven J.
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