Dilatation method
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United States of America Patent
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-
Sep 13, 1983
Issued Date -
N/A
app pub date -
Mar 26, 1982
filing date -
Oct 20, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dilatation catheter is provided with a double lumen tube and inner and outer inflatable and deflatable balloon elements, one within the other. The inner bag element is twisted for retraction while the outer bag element is inflated. Subsequent deflation of the outer bag element serves to further laterally compress the inner bag element and provide a smooth buffering surface for engagement with blood vessel walls as the catheter is moved past them.
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