US4020847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating cutter catheter
Assignee: Individual
•
Filing: 1975-11-05
•
Granted: 1977-05-03
•
Expires: 1995-11-05
Abstract
Abstract An elongate blunt-ended hollow tube is affixed on the distal end of a flexible catheter. A cutting edge along one side of a lengthwise slot in the tube wall cuts off irregularities from the inside of a vessel and feeds them into the hollow interior of the tube as the catheter is rotated.
Inventors
- 👤 William T. Clark, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/320708; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0069; A61B17/320783
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A catheter comprising a flexible shaft, an elongate hollow tube formed by a concavo-convex wall having one end attached to said shaft and the other end being blunt, said tube having at least one lengthwise slot in the wall thereof and a cutting edge along one side of said slot, said tube being of circular cross-section, said cutting edge being disposed not outside of the circle of the tube cross section and being an edge of the tube wall.
Claim 2
Dependent Claim
79 words
A catheter comprising a flexible shaft, an elongate hollow tube formed by a concavo-convex wall having one end attached to said shaft and the other end being blunt, said tube having at least one lengthwise slot in the wall thereof and a cutting edge along one side of said slot, said tube being of circular cross-section, said cutting edge being disposed not outside of the circle of the tube cross section and being an edge of the tube wall.
Claim 3
Dependent Claim
12 words
A catheter as claimed in claim 1, said cutting edge being serrated.
References Cited (Backward Citations)
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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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |