Method and apparatus for providing external perfusion lumens on balloon catheters
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United States of America Patent
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Feb 4, 1997
Issued Date -
N/A
app pub date -
Sep 29, 1995
filing date -
Apr 1, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A catheter sleeve includes a radially expansible distal region having a plurality of axial blood perfusion lumens or channels formed thereon. The catheter sleeve may be introduced over a conventional angioplasty balloon catheter with the expansible region lying over the balloon. When the balloon of the angioplasty catheter is expanded, the perfusion lumens will provide a flow path for blood around the expanded balloon. Optionally, the catheter sleeve may further include drug infusion lumens over the radially expansible region. In this way, drugs can be delivered over prolonged periods while the underlying angioplasty balloon is inflated and blood flows through the lumens or channels to perfuse the distal myocardium.
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