Patent US4661094A successfully refreshed from Google Patents.
US4661094A
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Perfusion catheter and method
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1985-05-03
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Granted: 1987-04-28
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Expires: 2005-05-03
Abstract
Abstract Perfusion catheter adapted to be positioned in at least a partially occluded blood vessel having a lesion or restriction therein comprising an elongate flexible plastic tubular member having a flow passage extending therethrough. The member has proximal and distal ends and a fitting carried by the proximal end. The member has a plurality of holes spaced apart longitudinally from the distal end and permitting the flow of liquid from and into the flow passage through the holes when the catheter is positioned in the lesion or restriction so that at least some of the holes are on one side of the lesion or restriction and other holes are on the other side of the lesion or restriction.
Inventors
- 👤 John B. Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:23
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B90/00; A61B90/39; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1097
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
In a method for maintaining blood flow across a stenosis in a blood vessel by the use of a perfusion catheter comprised of a flexible tubular member having a flow passage extending longitudinally of the same and having a plurality of spaced apart holes spaced longitudinally from the distal extremity of the tubular member and in communication with the flow passage in the tubular member, the method comprising inserting the perfusion catheter into the blood vessel of the patient so that the perfusion catheter extends through the stenosis so that at least one of the holes in the perfusion catheter is disposed on one side of the stenosis and at least one of the holes is disposed on the other side of the stenosis and at least one of the holes is disposed on the other side of the stenosis so that blood can flow into and out of at least certain of the holes in the tubular member and through the flow passage in the tubular member and across the stenosis to thereby permit blood to continue to flow through the blood vessel and across the stenosis.
Claim 2
Dependent Claim
188 words
In a method for maintaining blood flow across a stenosis in a blood vessel by the use of a perfusion catheter comprised of a flexible tubular member having a flow passage extending longitudinally of the same and having a plurality of spaced apart holes spaced longitudinally from the distal extremity of the tubular member and in communication with the flow passage in the tubular member, the method comprising inserting the perfusion catheter into the blood vessel of the patient so that the perfusion catheter extends through the stenosis so that at least one of the holes in the perfusion catheter is disposed on one side of the stenosis and at least one of the holes is disposed on the other side of the stenosis and at least one of the holes is disposed on the other side of the stenosis so that blood can flow into and out of at least certain of the holes in the tubular member and through the flow passage in the tubular member and across the stenosis to thereby permit blood to continue to flow through the blood vessel and across the stenosis.
Claim 3
Dependent Claim
204 words
In a method for maintaining blood flow across a stenosis in a blood vessel by the use of a perfusion catheter comprised of a flexible tubular member having a flow passage extending longitudinally of the same and having a plurality of spaced apart holes spaced longitudinally from the distal extremity of the tubular member and in communication with the flow passage in the tubular member and a guide wire, the method comprising inserting a guide wire into a vessel of the patient so that the distal extremity of the guide wire crosses the stenosis in the blood vessel, and introducing the perfusion catheter into the blood vessel over the guide wire so that the perfusion catheter extends through the stenosis so that at least one of the holes in the perfusion catheter is disposed on one side of the stenosis and at least one of the holes is disposed on the other side of the stenosis so that blood can flow into and out of at least certain of the holes in the tubular member and through the flow passage in the tubular member and across the stenosis to thereby permit blood to continue to flow through the blood vessel and across the stenosis.
Claim 4
Dependent Claim
204 words
In a method for maintaining blood flow across a stenosis in a blood vessel by the use of a perfusion catheter comprised of a flexible tubular member having a flow passage extending longitudinally of the same and having a plurality of spaced apart holes spaced longitudinally from the distal extremity of the tubular member and in communication with the flow passage in the tubular member and a guide wire, the method comprising inserting a guide wire into a vessel of the patient so that the distal extremity of the guide wire crosses the stenosis in the blood vessel, and introducing the perfusion catheter into the blood vessel over the guide wire so that the perfusion catheter extends through the stenosis so that at least one of the holes in the perfusion catheter is disposed on one side of the stenosis and at least one of the holes is disposed on the other side of the stenosis so that blood can flow into and out of at least certain of the holes in the tubular member and through the flow passage in the tubular member and across the stenosis to thereby permit blood to continue to flow through the blood vessel and across the stenosis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |