Catheter having a variable length shaft segment and method of use
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United States of America Patent
Stats
-
Aug 8, 2000
Grant Date -
N/A
app pub date -
Sep 30, 1998
filing date -
Sep 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a catheter device and a method of use to enable catheter exchange over a conventional length guidewire without the use of a guidewire extension or exchange wire. The catheter device includes an elongated inflation shaft having a longitudinal inflation lumen, an extension shaft having a longitudinal extension lumen coupled in fluid communication with the inflation lumen, a balloon member disposed at the distal end of the extension shaft and in fluid communication with the inflation lumen, a guidewire shaft having a longitudinal guidewire lumen which extends from the distal end of the balloon member, through the balloon member and extension shaft, to the proximal end of the extension shaft, and a variable length shaft coupled to the proximal end of the extension shaft. The variable length shaft comprises an elastomeric material which may be stretched from a relaxed state of about 10 centimeters to a fully extended state of about 140 centimeters.
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