US4559927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endarterectomy apparatus and process
Assignee: Individual
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Filing: 1981-06-15
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Granted: 1985-12-24
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Expires: 2001-06-15
Abstract
Abstract A center-pull cutting annulus which is radially expansible is employed to achieve complete removal of arteriosclerotic material from occluded arteries.
Inventors
- 👤 Albert K. Chin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/22; A61B2017/22038; A61B17/3205; A61B17/3207; A61B2017/320741
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A method for excising arteriosclerotic occlusions from arteries comprising positioning an annular cutting knife within an artery in position to excise an occlusion upon movement of said knife along said artery, said knife being split longitudinally and having overlapped end portions, said knife being radially compressible and expansible while said end portions are overlapped and having a wire carrier fixedly attached thereto along substantially the central axis thereof, and pulling said carrier through a distal incision in said artery.
Claim 2
Independent Claim
79 words
A method for excising arteriosclerotic occlusions from arteries comprising positioning an annular cutting knife within an artery in position to excise an occlusion upon movement of said knife along said artery, said knife being split longitudinally and having overlapped end portions, said knife being radially compressible and expansible while said end portions are overlapped and having a wire carrier fixedly attached thereto along substantially the central axis thereof, and pulling said carrier through a distal incision in said artery.
Claim 3
Independent Claim
89 words
A method for excising arteriosclerotic occlusions from arteries comprising positioning an annular cutting knife within an artery in position to excise an occlusion upon movement of said knife along said artery, said knife being split longitudinally and having overlapped end portions provided with complemental means to maintain said end portions overlapped, said knife being radially compressible and expansible while said end portions are overlapped and having a wire carrier fixedly attached thereto along substantially the central axis thereof, and pulling said carrier through a distal incision in said artery.
Claim 4
Independent Claim
89 words
A method for excising arteriosclerotic occlusions from arteries comprising positioning an annular cutting knife within an artery in position to excise an occlusion upon movement of said knife along said artery, said knife being split longitudinally and having overlapped end portions provided with complemental means to maintain said end portions overlapped, said knife being radially compressible and expansible while said end portions are overlapped and having a wire carrier fixedly attached thereto along substantially the central axis thereof, and pulling said carrier through a distal incision in said artery.
Claim 5
Independent Claim
127 words
A method for excising arteriosclerotic occlusions from arteries comprising positioning an annular cutting knife within an artery in position to excise an occlusion upon movement of said knife along said artery, said knife being split longitudinally and having overlapped end portions, said knife being radially compressible and expansible while said end portions are overlapped and having a wire carrier fixedly attached thereto along substantially the central axis thereof, and pulling said carrier through a distal incision in said artery, said wire carrier being emplaced in said occlusion by threading a wire reinforced catheter along the central path of least resistance of said occlusion, removing the wire reinforcement from the catheter, threading said wire carrier through said catheter, removing said catheter, and pulling said carrier through said incision.
Claim 6
Independent Claim
127 words
A method for excising arteriosclerotic occlusions from arteries comprising positioning an annular cutting knife within an artery in position to excise an occlusion upon movement of said knife along said artery, said knife being split longitudinally and having overlapped end portions, said knife being radially compressible and expansible while said end portions are overlapped and having a wire carrier fixedly attached thereto along substantially the central axis thereof, and pulling said carrier through a distal incision in said artery, said wire carrier being emplaced in said occlusion by threading a wire reinforced catheter along the central path of least resistance of said occlusion, removing the wire reinforcement from the catheter, threading said wire carrier through said catheter, removing said catheter, and pulling said carrier through said incision.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |