Method of making a distensible dilatation balloon using a block copolymer
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United States of America Patent
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Mar 19, 1996
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N/A
app pub date -
Sep 30, 1992
filing date -
Sep 30, 1992
priority date (Note) -
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Abstract
Balloons and balloon catheters with a superior overall combination of distensibility, elastic stress response and strength. The improved properties of the balloons result from the method or process used to form the balloons, as well as the polymeric materials used in said balloon forming process. Additionally, the enhanced combination of properties of the balloons will not be adversely affected by the novel sterilization process contemplated by this invention. A process for forming a balloon involves providing a parison of a block copolymer, subjecting the parison to at least one axial stretch step and at least one radial expansion step, and heating the expanded parison to a temperature below the melting temperature of the block copolymer.
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