Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-05-27
1996-07-09
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604102, 606194, A61M 2900
Patent
active
055339689
ABSTRACT:
An intravascular catheter such as a dilatation catheter for angioplasty with a catheter shaft having an outer tubular member with an expandable distal section which expands elasticly upon the introduction of fluid under a pressure within a first pressure range to a larger diameter and which contracts by elastic recoil upon the withdrawal of the inflation fluid. The expandable distal section is relatively noncompliant at pressures above the first pressure range. Preferably, the dilatation catheter has an inflatable member or balloon disposed distal to the expandable distal section which is formed of the same polymeric material as the expandable distal section and is in fluid communication with the expandable inner lumen within the expandable distal section. In one preferred embodiment the catheter has a distal section which includes an outer tubular member bonded or otherwise secured (e.g. heat bonding or adhesive bonding) to an inner tubular member over a length to provide a catheter shaft having small transverse dimensions and improved flexibility with no loss in pushability. The unbonded or unsecured portion of the outer tubular member is expandable and when expanded forms with the inner tubular member an inflation lumen in fluid communication with the interior of the balloon.
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Muni Ketan P.
Sirhan Motasim M.
Advanced Cardiovascular Systems Inc.
Cermak Adam J.
Yasko John D.
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