Multilayer extrusion of angioplasty balloons
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United States of America Patent
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Dec 14, 1993
Issued Date -
N/A
app pub date -
Jul 9, 1991
filing date -
Sep 25, 1989
priority date (Note) -
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status (Latency Note)
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Abstract
A method of producing laminated inflatable, substantially inextensible expander members having composite properties enhancing their use on intravascular catheters, such as angioplasty catheters is described. Diverse polymeric compounds of differing properties are coextruded to create a multilayer parison. The parison is subsequently drawn and expanded in a blow molding operation to yield an expander member exhibiting enhanced properties including lubricity, burst-strength, limited radial expansion, bondability, and rupture characteristics.
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