US4957482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atherectomy device with a positive pump means
Assignee: Surgical Systems and Instruments Inc
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Filing: 1989-03-22
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Granted: 1990-09-18
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Expires: 2009-03-22
Abstract
Abstract An atherectomy system for cutting, ingesting and removing an obstruction from within a patient's artery, comprising a flexible guide-wire insertable into the artery, a flexible rotary-catheter rotatably disposed and slidable over the flexible guide-wire, a blade forming a distal end of the flexible rotary-catheter having teeth on its periphery which are bent inward, a continuous passage for ingesting the cut obstruction material between the flexible rotary-catheter and the flexible guide-wire, means at the proximal end of the flexible rotary-catheter for rotating it and positive displacement pump means connected to the continuous passage to pull the cut obstruction material proximally.
Inventors
- 👤 Samuel Shiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:10
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/22; A61B17/22004; A61B17/22012; A61B17/320758; A61B17/320783; A61B18/00; A61B18/04; A61B18/08; A61B18/082; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; F; F16; F16C; F16C1/00; F16C1/02; F16D; F16D7/00; F16D7/02; A61B2017/22038; A61B2017/22051; A61B2017/22052; A61B90/00; A61B90/36; A61B90/361; A61B2090/3614; A61B2217/00; A61B2217/002; A61B2217/005; A61M; A61M1/00; A61M1/71; A61M1/74; A61M1/75; F16C2316/00; F16C2316/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
An atherectomy system for cutting, ingesting and removing an obstruction from within a patient's artery, comprising in combination: a flexible guide-wire insertable into said artery, a flexible rotary-catheter being rotatably disposed and slidable over said flexible guide-wire, a blade forming a distal end of said flexible rotary-catheter having at least one tooth on its periphery which is bent inward, a continuous passage surrounding said flexible guide-wire for ingesting the cut obstruction material, said continuous passage being defined between said flexible rotary-catheter and said flexible guide-wire, coupling means at said proximal end of said flexible rotary-catheter for coupling it to a rotating means, and suction means connected to said continuous passage to pull said cut obstruction material proximally.
Claim 2
Dependent Claim
117 words
An atherectomy system for cutting, ingesting and removing an obstruction from within a patient's artery, comprising in combination: a flexible guide-wire insertable into said artery, a flexible rotary-catheter being rotatably disposed and slidable over said flexible guide-wire, a blade forming a distal end of said flexible rotary-catheter having at least one tooth on its periphery which is bent inward, a continuous passage surrounding said flexible guide-wire for ingesting the cut obstruction material, said continuous passage being defined between said flexible rotary-catheter and said flexible guide-wire, coupling means at said proximal end of said flexible rotary-catheter for coupling it to a rotating means, and suction means connected to said continuous passage to pull said cut obstruction material proximally.
Claim 3
Dependent Claim
18 words
An atherectomy system as in claim 1, wherein said suction is provided by a positive displacement pump means.
Claim 4
Dependent Claim
36 words
An atherectomy system as in claim 1, wherein said flexible rotary-catheter has an increased wall thickness and increased torque carrying capacity at the vicinity of its proximal end compared with the same at its distal end.
Claim 5
Dependent Claim
19 words
An atherectomy system as in claim 1, wherein said flexible rotary-catheter has a wall reinforced with a spiral member.
Claim 6
Dependent Claim
15 words
An atherectomy system as in claim 4, wherein said spiral member is made of metal.
Claim 7
Dependent Claim
18 words
An atherectomy system as in claim 4, wherein said spiral member is made of a flat metal ribbon.
Claim 8
Dependent Claim
29 words
An atherectomy system as in claim 1, said flexible guide-wire having distal barrier means to counter distal movement of surrounding obstruction material while said blade cuts the obstruction material.
Claim 9
Dependent Claim
14 words
An atherectomy system as in claim 1, said flexible guide-wire containing a optical fiber.
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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) | 1993-09-17 | 1994-03-19 | 1994-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-17 | 1998-03-19 | 1998-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-17 | 2002-03-19 | 2002-09-18 | $7700.00 | Window Closed / Lapsed |