US5403334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atherectomy device having helical blade and blade guide
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1993-10-01
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Granted: 1995-04-04
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Expires: 2013-10-01
Abstract
Abstract An atherectomy catheter includes a catheter body having a cylindrical housing at its distal end. The cylindrical housing includes an elongate cutting aperture on one side thereof and a mechanism for severing atheroma which enters within the opening. In a first embodiment, the cutting mechanism comprises a circular cutting blade which is advanced over an elongate guide member which defines a path for the blade. Use of the guide means helps assure that the cutting blade will not be lost from the housing during use. In a second embodiment, a rotatable helical cutting blade is mounted within the housing. In that particular embodiment, the helical cutting blade can serve as the guide member for the circular cutting blade.
Inventors
- 👤 Michael Evans
- 👤 Richard L. Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61B17/320758; A61B2017/00681; A61B2017/00685; A61B17/22; A61B2017/22051; A61B2017/22054; A61B2017/320052
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
109 words
An atherectomy catheter comprising: a catheter body having a lumen extending between proximal and distal ends thereof; a cylindrical housing secured to the distal end of the catheter body, said housing having a substantially open interior and an axially-aligned, elongate aperture on one side thereof; a circular cutting blade disposed within the housing; an elongate guide frame disposed within the housing adjacent the elongate aperture, said guide frame defines an exterior which receives and guides the circular cutting blade and an interior volume; and means for translating the circular cutting blade over the elongate guide frame, whereby the elongate guide frame acts as a guide for the cutting blade.
Claim 2
Dependent Claim
109 words
An atherectomy catheter comprising: a catheter body having a lumen extending between proximal and distal ends thereof; a cylindrical housing secured to the distal end of the catheter body, said housing having a substantially open interior and an axially-aligned, elongate aperture on one side thereof; a circular cutting blade disposed within the housing; an elongate guide frame disposed within the housing adjacent the elongate aperture, said guide frame defines an exterior which receives and guides the circular cutting blade and an interior volume; and means for translating the circular cutting blade over the elongate guide frame, whereby the elongate guide frame acts as a guide for the cutting blade.
Claim 3
Dependent Claim
23 words
An atherectomy catheter as in claim 1, further comprising means in the catheter body for rotating the cutting blade as it is translated.
Claim 4
Dependent Claim
13 words
An atherectomy catheter as in claim 1, wherein the cylindrical housing is flexible.
Claim 5
Dependent Claim
14 words
An atherectomy catheter as in claim 3, wherein the flexible cylindrical housing is segmented.
Claim 6
Dependent Claim
15 words
An atherectomy catheter as in claim 1, wherein the elongate frame is a helical coil.
Claim 7
Dependent Claim
16 words
An atherectomy catheter as in claim 1, wherein the guide frame has a generally cylindrical exterior.
Claim 8
Dependent Claim
22 words
An atherectomy catheter as in claim 6, wherein the cylindrical exterior includes one or more indentations to facilitate the intrusion of atheroma.
Claim 9
Dependent Claim
29 words
An atherectomy catheter as in claim 6, wherein the cylindrical exterior is open along the axial face adjacent the aperture in the housing to facilitate the intrusion of atheroma.
Claim 10
Dependent Claim
28 words
An atherectomy catheter as in claim 1, wherein the circular cutting blade includes a cylindrical shank portion which receives the elongate guide frame as the blade is translated.
Claim 11
Dependent Claim
35 words
An atherectomy catheter as in claim 9, wherein the means for translating includes a flexible drive cable attached at a distal end to the cutter shank and extending through the lumen of the catheter body.
Claim 12
Dependent Claim
17 words
An atherectomy catheter as in claim 9, wherein the cylindrical shank of the cutting blade is flexible.
Claim 13
Dependent Claim
15 words
An atherectomy catheter as in claim 11, wherein the flexible shank comprises a coiled ribbon.
Claim 14
Dependent Claim
25 words
An atherectomy device as in claim 1, further comprising an inflatable balloon secured to the housing on a side substantially opposite to the elongate aperture.
Claim 15
Dependent Claim
41 words
An atherectomy catheter as in claim 1, further comprising: a tamping surface disposed within the helical coil; and means for axially translating the tamping surface, whereby material within the helical coil may be moved to one end of the cylindrical housing.
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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) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |