Patent US3823422A successfully refreshed from Google Patents.
Patent US3996938A successfully refreshed from Google Patents.
US3996938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding mesh catheter
Assignee: Individual
•
Filing: 1975-07-10
•
Granted: 1976-12-14
•
Expires: 1995-07-10
Abstract
Abstract The diameter of a normally cylindrical mesh on the distal end of a flexible catheter is increased by a manually operated plunger so as to remove a clot from the vessel as the catheter is withdrawn.
Inventors
- 👤 William T. Clark, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:24
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0108; A61M25/02; A61M25/04; A61M25/09; A61M25/09016; A61M25/09033; A61M29/00; A61M29/02; A61B17/22031; A61B2017/22034; A61B2017/2212; A61B90/00; A61B90/39; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3008
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A catheter comprising a guide tube having an elongate flexible portion, flexible plunger slidably disposed in said tube, and having one end portion extending outwardly beyond an end of the flexible portion of said guide tube, a rounded tip member on the outer end of said plunger, a mesh sleeve surrounding said outwardly extending end portion of said plunger and having opposite ends respectively connected to said tip member and said end of said guide tube, and means on the other end of said tube and the other end of said plunger for manipulating the same and for pulling said tip towards said guide tube whereby to expand said mesh sleeve.
Claim 2
Dependent Claim
111 words
A catheter comprising a guide tube having an elongate flexible portion, flexible plunger slidably disposed in said tube, and having one end portion extending outwardly beyond an end of the flexible portion of said guide tube, a rounded tip member on the outer end of said plunger, a mesh sleeve surrounding said outwardly extending end portion of said plunger and having opposite ends respectively connected to said tip member and said end of said guide tube, and means on the other end of said tube and the other end of said plunger for manipulating the same and for pulling said tip towards said guide tube whereby to expand said mesh sleeve.
Claim 3
Dependent Claim
15 words
A catheter as claimed in claim 1, said mesh sleeve being comprised of tubular braid.
Claim 4
Dependent Claim
14 words
A catheter as claimed in claim 1, said tip being generally of bullet shape.
References Cited (Backward Citations)
GB190726119A
Cited
FR592182A
Cited
US2836181A
Cited
US3435826A
Cited
GB1205743A
Cited
US3509883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |