US4950277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atherectomy cutting device with eccentric wire and method
Assignee: Boston Scientific Scimed Inc
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Filing: 1989-01-23
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Granted: 1990-08-21
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Expires: 2009-01-23
Abstract
Abstract An atherectomy cutting device for removing obstructive tissue from the lumen of a body vessel comprises a guide wire positionable in the lumen of the vessel, and a rotatable cutter supported on an eccentric wire. The eccentric wire has a distal portion extension establishing a substantially right angle with the eccentric wire and having a ring to permit sliding movement of the eccentric wire and cutter along the guide wire. The extension and eccentric wire also permit manipulative movement of the rotatable cutter in an arc around the guide wire. There is included a dual lumen sheath having a first lumen for supporting the guide wire and a second lumen for supporting the eccentric wire carrying the rotatable cutter. Also included is a method for removing obstructive tissue which involves manipulating the eccentric wire about the guide wire to move the cutter in an arc about the guide wire and thus increase the portion of obstructive tissue contacted by the cutter.
Inventors
- 👤 Andrew F. Farr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:02
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/22; A61B2017/22038
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
51 words
A device for removing obstructive tissue from a lumen of a body vessel which comprises: a first wire positionable in said lumen; a second wire having a distal end slidably engaged with said first wire; and a rotatable cutter supported by said second wire for movement therewith along said first wire.
Claim 2
Independent Claim
51 words
A device for removing obstructive tissue from a lumen of a body vessel which comprises: a first wire positionable in said lumen; a second wire having a distal end slidably engaged with said first wire; and a rotatable cutter supported by said second wire for movement therewith along said first wire.
Claim 3
Dependent Claim
32 words
A device for removing obstructive tissue from the lumen of a body vessel as recited in claim 1 further comprising means for moving said cutter in an arc around said first wire.
Claim 4
Dependent Claim
40 words
A device for removing obstructive tissue from the lumen of a body vessel as recited in claim 1 further comprising a sheath having a first lumen for supporting said first wire and a second lumen for supporting said second wire.
Claim 5
Dependent Claim
38 words
A device for removing obstructive tissue from the lumen of a body vessel as recited in claim 1 wherein said distal end of said second wire is formed with a ring for slidable engagement along said first wire.
Claim 6
Dependent Claim
39 words
A device for removing obstructive tissue from the lumen of a body vessel as recited in claim 4 wherein said distal end of said second wire is bent to establish an extension oriented substantially perpendicular to said first wire.
Claim 7
Independent Claim
86 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery which comprises: an eccentric wire for supporting said cutter, said eccentric wire having a proximal end and a distal end; an extension attached to said distal end to establish a substantially right angle with said eccentric wire; a ring attached to said extension; and a guide wire positioned in said ring to permit sliding movement of said eccentric wire along said guide wire.
Claim 8
Independent Claim
86 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery which comprises: an eccentric wire for supporting said cutter, said eccentric wire having a proximal end and a distal end; an extension attached to said distal end to establish a substantially right angle with said eccentric wire; a ring attached to said extension; and a guide wire positioned in said ring to permit sliding movement of said eccentric wire along said guide wire.
Claim 9
Dependent Claim
42 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery as recited in claim 6 further comprising means for moving said cutter in an arc around said guide wire.
Claim 10
Dependent Claim
37 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery as recited in claim 6 wherein said extension is integral with said eccentric wire.
Claim 11
Dependent Claim
50 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery as recited in claim 6 further comprising a sheath having a first lumen for supporting said guide wire and a second lumen for supporting said eccentric wire.
Claim 12
Dependent Claim
47 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery as recited in claim 6 further comprising torque means positioned over said eccentric wire and fixedly attached to said cutter for rotating said cutter.
Claim 13
Dependent Claim
36 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery as recited in claim 10 wherein said torque means comprises a hollow tube.
Claim 14
Dependent Claim
48 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery as recited in claim 11 further comprising suction means operatively connected to said torque means for removing clippings from the artery through said torque means.
Claim 15
Dependent Claim
34 words
An apparatus for operably positioning an atherectomy cutter against obstructive tissue in the lumen of an artery to remove clippings of the artery as recited in claim 6 wherein said guide wire is steerable.
Claim 16
Independent Claim
114 words
A method for removing obstructive tissue from the lumen of a vessel which comprises the steps of: inserting a first wire into the vessel across the obstructive tissue; engaging an end of a second wire with said first wire for sliding movement of said end along said first wire; positioning a cutter on said second wire for movement of said cutter with said second wire along said first wire to bring said cutter into contact with the obstructive tissue; rotating said cutter to cut the obstructive tissue; and manipulating said second wire to move said cutter in an arc about said first wire to increase the portion of obstructive tissue contacted by said cutter.
Claim 17
Independent Claim
114 words
A method for removing obstructive tissue from the lumen of a vessel which comprises the steps of: inserting a first wire into the vessel across the obstructive tissue; engaging an end of a second wire with said first wire for sliding movement of said end along said first wire; positioning a cutter on said second wire for movement of said cutter with said second wire along said first wire to bring said cutter into contact with the obstructive tissue; rotating said cutter to cut the obstructive tissue; and manipulating said second wire to move said cutter in an arc about said first wire to increase the portion of obstructive tissue contacted by said cutter.
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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) | 1993-08-20 | 1994-02-19 | 1994-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-20 | 1998-02-19 | 1998-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-20 | 2002-02-19 | 2002-08-21 | $7700.00 | Window Closed / Lapsed |