US5047041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical apparatus for the excision of vein valves in situ
Assignee: Individual
•
Filing: 1990-03-23
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Granted: 1991-09-10
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Expires: 2010-03-23
Abstract
Abstract An improved surgical device for cutting and removing venous valves is disclosed. The valve cutter is provided with a circular cutting head and a dilating segment affixed to a cable or wire. The circular cutting edge promotes engagement of the valve cusps and does not require orientation within the vein during surgery. A serrated or toothed cutting edge further promotes engagement of the valve leaflets and helps to prevent slippage of the valve leaflet pairs. The serrated cutting edge is tapered inward to prevent trauma to or tearing of the venous wall.
Inventors
- 👤 Peter B. Samuels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/32075; A61B17/22; A61B2017/22097
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
A device for cutting venous valve leaflets, comprising: (a) a cylindrical cutting head having a front end and a hollow rear end, said rear end having rearwardly projecting, inwardly tapered, guide teeth separating several self-locating cutting grooves adapted to engage and sever the valve leaflets; (b) cable means secured to the cutting head and extending from said hollow rear end for permitting insertion and withdrawal of the cutting head within a vein, said guide teeth causing the cutting grooves properly to engage and sever the valve leaflets as the cutting head moves past the valve leaflets during its withdrawal from the vein; and (c) a centering segment secured to said cable means adjacent to said rear end of the cutting head for centering the cutting head and for preventing it from engaging side branches of the vein.
Claim 2
Independent Claim
137 words
A device for cutting venous valve leaflets, comprising: (a) a cylindrical cutting head having a front end and a hollow rear end, said rear end having rearwardly projecting, inwardly tapered, guide teeth separating several self-locating cutting grooves adapted to engage and sever the valve leaflets; (b) cable means secured to the cutting head and extending from said hollow rear end for permitting insertion and withdrawal of the cutting head within a vein, said guide teeth causing the cutting grooves properly to engage and sever the valve leaflets as the cutting head moves past the valve leaflets during its withdrawal from the vein; and (c) a centering segment secured to said cable means adjacent to said rear end of the cutting head for centering the cutting head and for preventing it from engaging side branches of the vein.
Claim 3
Dependent Claim
13 words
The invention of claim 1 wherein said centering segment is an ovoid body.
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) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |