Dilatation catheter and method for widening of strictures
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United States of America Patent
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Nov 17, 1992
Issued Date -
N/A
app pub date -
Mar 12, 1992
filing date -
Sep 27, 1988
priority date (Note) -
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status (Latency Note)
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Abstract
A dilatation catheter intended in particular for treatment of strictures in the carotid artery has at its front end a dilatation balloon, which is inserted in the folded state into the carotid artery and is inflated in order to widen the stricture. In front of the dilatation balloon a sealing balloon is arranged which serves to seal off the carotid artery downstream of the stricture, in order thereby to prevent a migration of any stricture material which may become detached during treatment, and thus to avoid the risk of an embolism. Between the dilatation balloon and the sealing balloon there is a draw-off and inlet opening through which, after widening and with the sealing balloon inflated, detached stricture material can be drawn off or washed away.
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