Method of using a catheter sleeve
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United States of America Patent
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-
Jun 3, 1997
Issued Date -
N/A
app pub date -
Oct 20, 1994
filing date -
Nov 2, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A balloon catheter assembly (2) includes a catheter (8) having a catheter shaft (10) with a balloon (12) at its distal end. A sleeve assembly (16) has a diametrically expanding balloon enlargement sleeve (18) at its distal end sized to be positionable over the balloon when the balloon is deflated. The enlargement sleeve can expand from a relaxed condition, at which it is placed over the deflated balloon, to an expanded condition surrounding the fully inflated balloon. The enlargement sleeve is sufficiently thick when expanded for an enlarged dilatation of the vessel when the balloon is reinflated. The enlargement sleeve can be made of elastic or substantially inelastic material; it can also include a porous matrix material with a drug interspersed therein so the drug is applied topically when the vessel is redilated.
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