Patent US2349044A successfully refreshed from Google Patents.
Patent US5135484A successfully refreshed from Google Patents.
US5135484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing plaque from vessels
Assignee: LIGHTFOOT TOM L
•
Filing: 1990-05-09
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Granted: 1992-08-04
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Expires: 2010-05-09
Abstract
Abstract A method of removing plaque from vessels by at least partially isolating a portion of a vessel which is partially occluded by plaque from the remainder of the vessel, forcing a slurry to flow in contact with the plaque in the vessel to abrade the plaque, and withdrawing the slurry from the vessel, and apparatus for carrying out the method, are disclosed.
Inventors
- 👤 John T. M. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:16
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B2017/22051; A61B2017/22054; A61B17/32; A61B2017/320004; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1052; A61M2025/109; A61M25/1011
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
69 words
A method of removing plaque from vessels comprising the steps of: at least partially isolating a portion of a vessel which is partially occluded by plaque from the remainder of the vessel; and forcing a slurry formed of a physiologically acceptable liquid and particles which are insoluble in such liquid but soluble in blood serum to flow in contact with the plaque in the vessel to abrade the plaque.
Claim 2
Independent Claim
69 words
A method of removing plaque from vessels comprising the steps of: at least partially isolating a portion of a vessel which is partially occluded by plaque from the remainder of the vessel; and forcing a slurry formed of a physiologically acceptable liquid and particles which are insoluble in such liquid but soluble in blood serum to flow in contact with the plaque in the vessel to abrade the plaque.
Claim 3
Dependent Claim
36 words
The method of claim 1 further comprising the step of causing blood to flow through the catheter bypassing the isolated portion of the vessel while the slurry is forced to flow in contact with the plaque.
Claim 4
Independent Claim
96 words
A method of removing plaque from vessels comprising the steps of: at least partially isolating a portion of a vessel which is partially occluded by plaque from the remainder of the vessel; forcing a slurry formed of a physiologically acceptable liquid and particles which are insoluble in such liquid but soluble in blood serum to flow in contact with the plaque in the vessel to abrade the plaque; and withdrawing at least a portion of the slurry from the vessel while continuing to force said slurry to flow in contact with the plaque in the vessel.
Claim 5
Independent Claim
96 words
A method of removing plaque from vessels comprising the steps of: at least partially isolating a portion of a vessel which is partially occluded by plaque from the remainder of the vessel; forcing a slurry formed of a physiologically acceptable liquid and particles which are insoluble in such liquid but soluble in blood serum to flow in contact with the plaque in the vessel to abrade the plaque; and withdrawing at least a portion of the slurry from the vessel while continuing to force said slurry to flow in contact with the plaque in the vessel.
References Cited (Backward Citations)
US3401690A
Cited
US3565062A
Cited
DE2230283A1
Cited
DE3019115A1
Cited
US4573966A
Cited
US4445509A
Cited
US4423725A
Cited
WO1983003356A1
Cited
DE3421390A1
Cited
US4690672A
Cited
DE3438131A1
Cited
US4790813A
Cited
US4696668A
Cited
US4655746A
Cited
EP0232678B1
Cited
EP0229620A2
Cited
US4898574A
Cited
US4729763A
Cited
US4902276A
Cited
US4795438A
Cited
US4950238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-04 | 1996-02-03 | 1996-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-04 | 2000-02-03 | 2000-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-04 | 2004-02-03 | 2004-08-04 | $7700.00 | Window Closed / Lapsed |