Patent US3892438A successfully refreshed from Google Patents.
US5366464A
Expired / Lapsed
US
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Atherectomy catheter device
Assignee: Individual
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Filing: 1993-07-22
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Granted: 1994-11-22
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Expires: 2013-07-22
Abstract
Abstract An atherectomy catheter device including a flexible casing, an elongated flexible tubular coil in the casing, a window extending axially in the flexible tubular coil and casing for placement in contiguous relationship to a lesion in a blood vessel, a cutting edge on the coil in the window, and an actuator having structure therein for both rotating and reciprocating the catheter to cause the cutting edge to excise the lesion from the blood vessel. The elongated tubular member may be a flexible corrugated member. An atherectomy catheter including a flexible casing, an elongated flexible tubular coil in the casing, a window extending axially in the flexible tubular coil and casing, a rotatable knife member in the flexible coil, and a drive for rotating and advancing the knife axially through the window.
Inventors
- 👤 John C. Belknap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:13
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/22; A61B2017/22038; A61B2017/22072; A61B2017/22074; A61B2017/22075; A61B2017/22082; A61B2017/320004; A61B2017/320733
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
130 words
An atherectomy catheter comprising elongated flexible tubular means having a longitudinal axis and a circumference for placement next to a lesion in a blood vessel, window means defining an opening of less than 360 degrees in said circumference of said elongated flexible tubular means for receiving said lesion, a flexible edge portion on said window means, flexible cutting edge means on said flexible edge portion for flexing with the curvature of said blood vessel and for excising said lesion which enters said window means, said elongated tubular means comprising a flexible helical coil member, said flexible cutting edge means comprising exposed adjacent severed ends of said flexible coil member, and a flexible casing on said flexible coil member for retaining said coil member in assembled relationship at said window means.
Claim 2
Dependent Claim
130 words
An atherectomy catheter comprising elongated flexible tubular means having a longitudinal axis and a circumference for placement next to a lesion in a blood vessel, window means defining an opening of less than 360 degrees in said circumference of said elongated flexible tubular means for receiving said lesion, a flexible edge portion on said window means, flexible cutting edge means on said flexible edge portion for flexing with the curvature of said blood vessel and for excising said lesion which enters said window means, said elongated tubular means comprising a flexible helical coil member, said flexible cutting edge means comprising exposed adjacent severed ends of said flexible coil member, and a flexible casing on said flexible coil member for retaining said coil member in assembled relationship at said window means.
Claim 3
Dependent Claim
17 words
An atherectomy catheter as set forth in claim 1 wherein said flexible cutting edge means is serrated.
Claim 4
Dependent Claim
37 words
An atherectomy catheter as set forth in claim 1 wherein said flexible coil member has inner and outer surfaces, and wherein said flexible cutting edge means is located at said inner surface of said flexible coil member.
Claim 5
Dependent Claim
37 words
An atherectomy catheter as set forth in claim 1 wherein said flexible coil member has inner and outer surfaces, and wherein said flexible cutting edge means is located at said outer surface of said flexible coil member.
Claim 6
Dependent Claim
16 words
An atherectomy catheter as set forth in claim 1 including means for rotating said tubular means.
Claim 7
Dependent Claim
16 words
An atherectomy catheter as set forth in claim 5 including means for reciprocating said tubular means.
Claim 8
Dependent Claim
16 words
An atherectomy catheter as set forth in claim 6 wherein said cutting edge means is serrated.
Claim 9
Dependent Claim
34 words
An atherectomy catheter as set forth in claim 7 wherein said cutting edge means has an uniform serration, and wherein the distance of said reciprocation is greater than the pitch of said uniform serration.
Claim 10
Dependent Claim
23 words
An atherectomy catheter as set forth in claim 1 including means for rotating said elongated flexible tubular means at a selectively variable speed.
Claim 11
Dependent Claim
23 words
An atherectomy catheter as set forth in claim 9 including means for reciprocating said elongated flexible tubular means at a selectively variable speed.
Claim 12
Dependent Claim
20 words
An atherectomy catheter as set forth in claim 10 wherein said selectively variable speeds can be held at constant speeds.
Claim 13
Dependent Claim
18 words
An atherectomy catheter as set forth in claim 1 including means for reciprocating said elongated flexible tubular means.
Claim 14
Dependent Claim
19 words
An atherectomy catheter as set forth in claim 1 including an elongated flexible guide member within said tubular means.
Claim 15
Dependent Claim
20 words
An atherectomy catheter as set forth in claim 1 including means for conducting fluid into said elongated flexible tubular means.
Claim 16
Dependent Claim
20 words
An atherectomy catheter as set forth in claim 14 including means for withdrawing fluid from said elongated flexible tubular means.
Claim 17
Dependent Claim
20 words
An atherectomy catheter as set forth in claim 1 including means for applying suction to said elongated flexible tubular means.
Claim 18
Dependent Claim
20 words
An atherectomy catheter as set forth in claim 16 including means for conducting fluid into said elongated flexible tubular means.
Claim 19
Dependent Claim
47 words
An atherectomy catheter as set forth in claim 1 including, a second opening in said casing, a dye-carrying lumen in said coil, a guide wire in said lumen, a drive motor for reciprocating and rotating said atherectomy catheter, and means for injecting dye into said dye-carrying lumen.
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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) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |