US5395311A
Expired / Lapsed
US
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Atherectomy catheter
Assignee: Individual
•
Filing: 1992-08-17
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Granted: 1995-03-07
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Expires: 2012-08-17
Abstract
Abstract An atherectomy catheter including an expandable cutter head having spaced apart blades radially extending from a cutter sleeve at a leading end of the cutter head. A torque tube is attached to and surrounds the blades at an expanding end of the cutter head opposite the leading end. An expander cable is attached to a bushing within the cutter head adjacent to the cutter sleeve and blades with the expander tube axially displaceable through the torque tube. A guide wire slidably extends through the bushing and expander tube. A guiding catheter substantially encloses the torque tube with the torque tube rotatable and axially displaceable within the guiding catheter, to rotate the cutter head as it engages a blockage in a blood vessel, An inflatable low pressure balloon around the torque tube applies a bio-active agent directly to tissues of the blood vessel cut during atherectomy. A stent with bio-active agent promotes healing of the vessel.
Inventors
- 👤 Winston A. Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:06
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/95; A61F2/958; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61L; A61L31/00; A61L31/02; A61L31/022; A61L31/04; A61L31/06; A61L31/14; A61L31/16; A61B17/22; A61B2017/22038; A61B2017/22051; A61B2017/22054; A61B2017/22082; A61B2217/00; A61B2217/002; A61B2217/005; A61F2/82; A61F2/86; A61F2/90; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2210/00; A61F2210/0004; A61L2300/00; A61L2300/40; A61L2300/412; A61L2300/414; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0662; A61M2025/0681; A61M25/09; A61M2025/09175; A61M2025/09183; A61M25/10; A61M2025/1043; A61M2025/1052; A61M25/1011; A61M25/104
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
An atherectomy catheter comprising: a cutter head; a torque tube attached to the cutter head; means for spinning the torque tube; a first inflatable balloon fixedly attached to the torque tube adjacent the cutter head; a second inflatable balloon fixedly attached to the torque tube and spaced apart from the first inflatable balloon; a first port and a second port each extending through the torque tube, in between the first balloon and the second balloon; and a first tube leading to the first port and a second tube leading to a second port.
Claim 2
Dependent Claim
93 words
An atherectomy catheter comprising: a cutter head; a torque tube attached to the cutter head; means for spinning the torque tube; a first inflatable balloon fixedly attached to the torque tube adjacent the cutter head; a second inflatable balloon fixedly attached to the torque tube and spaced apart from the first inflatable balloon; a first port and a second port each extending through the torque tube, in between the first balloon and the second balloon; and a first tube leading to the first port and a second tube leading to a second port.
Claim 3
Dependent Claim
26 words
The atherectomy catheter of claim 1 further comprising an inflation line supported by the torque tube and leading into the first balloon and the second balloon.
Claim 4
Dependent Claim
32 words
The atherectomy catheter of claim 1 wherein the cutter head includes a cutter sleeve, a plurality of substantially rigid and straight blades, and a front flexure linking each blade to the sleeve.
Claim 5
Dependent Claim
18 words
The atherectomy catheter of claim 3 further comprising a rear flexure linking each blade with the torque tube.
Claim 6
Dependent Claim
25 words
The atherectomy catheter of claim 1 further comprising a split ring assembly attached to an inner surface of the torque tube adjacent the cutter head.
Claim 7
Dependent Claim
16 words
The atherectomy catheter of claim 1 further comprising a guiding catheter substantially overlying the torque tube.
Claim 8
Dependent Claim
22 words
The atherectomy catheter of claim 1 wherein the first tube is an infusion tube and the second tube is a vacuum tube.
Claim 9
Dependent Claim
17 words
The atherectomy catheter of claim 1 further comprising means for reversibly and variably expanding the cutter head.
Claim 10
Dependent Claim
122 words
An atherectomy catheter comprising: a variably expandable cutter head; a torque tube attached to the cutter head; a motor for turning the torque tube; means for reversibly and variably expanding the cutter head; a first inflatable balloon fixedly attached to the torque tube adjacent the cutter head; a second inflatable balloon fixedly attached to the torque tube and spaced apart from the first inflatable balloon; a first port and a second port each extending through the torque tube, in between the first balloon and the second balloon; and a first tube leading to the first port and a second tube leading to second port, for infusing and removing a fluid into a space in between the first balloon and the second balloon.
Claim 11
Dependent Claim
122 words
An atherectomy catheter comprising: a variably expandable cutter head; a torque tube attached to the cutter head; a motor for turning the torque tube; means for reversibly and variably expanding the cutter head; a first inflatable balloon fixedly attached to the torque tube adjacent the cutter head; a second inflatable balloon fixedly attached to the torque tube and spaced apart from the first inflatable balloon; a first port and a second port each extending through the torque tube, in between the first balloon and the second balloon; and a first tube leading to the first port and a second tube leading to second port, for infusing and removing a fluid into a space in between the first balloon and the second balloon.
Claim 12
Dependent Claim
159 words
An atherectomy catheter comprising: a guide wire; a variably expandable cutter head having a cutter sleeve rotatably supported on the guide wire, the cutter head including a plurality of blades, each blade having a front end and a back end, with the front end of each blade attached to the cutter sleeve; a torque tube having a radially expanding leading end attached to and overlying the back end of each of the blades; a pullback cable attached to the cutter sleeve; a first inflatable balloon fixedly attached to the torque tube immediately adjacent to the leading end of the torque tube; a second inflatable balloon fixedly attached to the torque tube and spaced apart from the first inflatable balloon; a first port and a second port each extending through the torque tube, in between the first balloon and the second balloon; and a first tube leading to the first port and a second tube leading to the second port.
Claim 13
Dependent Claim
159 words
An atherectomy catheter comprising: a guide wire; a variably expandable cutter head having a cutter sleeve rotatably supported on the guide wire, the cutter head including a plurality of blades, each blade having a front end and a back end, with the front end of each blade attached to the cutter sleeve; a torque tube having a radially expanding leading end attached to and overlying the back end of each of the blades; a pullback cable attached to the cutter sleeve; a first inflatable balloon fixedly attached to the torque tube immediately adjacent to the leading end of the torque tube; a second inflatable balloon fixedly attached to the torque tube and spaced apart from the first inflatable balloon; a first port and a second port each extending through the torque tube, in between the first balloon and the second balloon; and a first tube leading to the first port and a second tube leading to the second port.
References Cited (Backward Citations)
US4610662A
Cited
US4445509A
Cited
US4636195A
Cited
US4790813A
Cited
US5000185A
Cited
US4886061A
Cited
US4895560A
Cited
US4950238A
Cited
US4885003A
Cited
US4966604A
Cited
US5030201A
Cited
US5178625A
Cited
US5213577A
Cited
US5135484A
Cited
US5224945A
Cited
US5250060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |