US5078723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atherectomy device
Assignee: Medtronic Inc
•
Filing: 1990-12-19
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Granted: 1992-01-07
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Expires: 2010-12-19
Abstract
Abstract A device for removing stenosis from arteries includes a catheter body for delivering a cutter to the area of the stenosis. A screw is mounted on the distal end of the body for entering and fixedly holding the stenosis. An annular cutting means is moved forward around the screw to cut the stenosis which is held by the screw. The catheter is then removed with the cut stenosis trapped inside the cutter.
Inventors
- 👤 Creg Dance
- 👤 Kevin Larkin
- 👤 Lynn Jabbusch
- 👤 John V. Hoek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:04
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B2017/00681; A61B2017/00685; A61B17/22; A61B2017/22072; A61B2017/22074; A61B2017/22075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
An atherectomy device comprising: a hollow torque cable comprising a first coil of wire wound at a first angle, and a second coil of wire wound concentrically around the first coil at a second angle in an opposite direction; the second coil being stretched at its distal end to form a helical screw, the tip segment of the screw portion of second coil being sharpened to facilitate entry of the screw into stenosis tissue; a cutter coil slidably mounted concentrically over the torque cable for reciprocal movement in the proximal and distal direction, the cutter coil having a cutting edge mounted on the distal tip of the flat ribbon coil for close scissor-like interaction with the screw; control means having rotation means attached to the proximal end of the torque cable for rotating the torque cable to advance the screw into stenosis tissue; and cutter advancement means mounted on the cutter coil for moving the cutter coil longitudinally relative to the torque cable.
Claim 2
Dependent Claim
163 words
An atherectomy device comprising: a hollow torque cable comprising a first coil of wire wound at a first angle, and a second coil of wire wound concentrically around the first coil at a second angle in an opposite direction; the second coil being stretched at its distal end to form a helical screw, the tip segment of the screw portion of second coil being sharpened to facilitate entry of the screw into stenosis tissue; a cutter coil slidably mounted concentrically over the torque cable for reciprocal movement in the proximal and distal direction, the cutter coil having a cutting edge mounted on the distal tip of the flat ribbon coil for close scissor-like interaction with the screw; control means having rotation means attached to the proximal end of the torque cable for rotating the torque cable to advance the screw into stenosis tissue; and cutter advancement means mounted on the cutter coil for moving the cutter coil longitudinally relative to the torque cable.
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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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |