Process for forming medical device balloons
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United States of America Patent
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May 4, 2010
Grant Date -
Apr 16, 2009
app pub date -
Dec 16, 2008
filing date -
Jan 7, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Medical device balloons are formed from a tubular parison by a process or apparatus which establishes a controlled location (initiation zone) on the parison where radial expansion is initiated. Initiation within the initiation zone is achieved by heating the parison in that location to a higher temperature than the remainder of the parison for at least a portion of the blowing time. A variety of apparatus configurations are provided, some of which allow for the size and location of the initiation zone to be readily reconfigured. Balloons can also be modified, post-blowing, using heating apparatus and methods described.
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