US5620451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead extraction system for transvenous defibrillation leads and for endocardial pacing leads
Assignee: Intermedics Inc
•
Filing: 1995-04-25
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Granted: 1997-04-15
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Expires: 2015-04-25
Abstract
Abstract A system for lead removal of both heart pacemaker leads and cardioverter-defibrillator endocardial leads comprising a flexible coil of flattened ribbon. Preferably, the ribbon is comprised of polyethylene or another suitable biologically compatible material. At a distal end of the coil, a cutting surface may be provided, such as a chisel-like edge at the distal end of the coil. A handle may be provided for twisting the coil onto the lead. The coil should be at least partially radiopaque or provided with a surface which is radiopaque so that its use may be observed in the body by fluoroscopy or other suitable means.
Inventors
- 👤 John P. Rosborough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057; A61N2001/0578
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
86 words
A lead extraction system comprising a coiled, flexible ribbon having a distal end and a proximal end, said flexible ribbon forming a tube adapted to fit over an implanted lead, successive turns of said ribbon lying adjacent one another and spaced apart from one another such that said lead can be passed between two successive turns of said ribbon from an outside of said tube to an inside thereof, and means attached to said distal end of said ribbon for severing fibrous ingrowth surrounding said lead.
Claim 2
Dependent Claim
86 words
A lead extraction system comprising a coiled, flexible ribbon having a distal end and a proximal end, said flexible ribbon forming a tube adapted to fit over an implanted lead, successive turns of said ribbon lying adjacent one another and spaced apart from one another such that said lead can be passed between two successive turns of said ribbon from an outside of said tube to an inside thereof, and means attached to said distal end of said ribbon for severing fibrous ingrowth surrounding said lead.
Claim 3
Dependent Claim
16 words
The lead extraction system according to claim 1 further comprising a handle at said proximal end.
Claim 4
Dependent Claim
20 words
The lead extraction system according to claim 2 further comprising means for selectively attaching said handle at said proximal end.
Claim 5
Dependent Claim
24 words
The lead extraction system according to claim 3 wherein said means for severing comprise a chisel edge at a distal end of said ribbon.
Claim 6
Dependent Claim
36 words
The lead extraction system according to claim 4 wherein said chisel edge has a relatively long bevel on an outward side of said ribbon and a relatively short bevel on an inward side of said ribbon.
Claim 7
Dependent Claim
17 words
The lead extraction system according to claim 5 wherein said ribbon is comprised of a bio-compatible polymer.
Claim 8
Dependent Claim
18 words
The lead extraction system according to claim 6 wherein at least a part of said ribbon is radiopaque.
Claim 9
Dependent Claim
17 words
The lead extraction system according to claim 5 wherein said ribbon is comprised of a bio-compatible metal.
Claim 10
Dependent Claim
18 words
The lead extraction system according to claim 8 wherein at least a part of said ribbon is radiopaque.
Claim 11
Dependent Claim
24 words
The lead extraction system according to claim 1 wherein said means for severing comprise an abrasive edge at a distal end of said ribbon.
Claim 12
Dependent Claim
23 words
The lead extraction system according to claim 10 wherein said abrasive edge comprises a distal edge having a plurality of circumferentially spaced teeth.
Claim 13
Dependent Claim
17 words
The lead extraction system according to claim 11 wherein said ribbon is comprised of a bio-compatible polymer.
Claim 14
Dependent Claim
18 words
The lead extraction system according to claim 12 wherein at least a part of said ribbon is radiopaque.
Claim 15
Dependent Claim
17 words
The lead extraction system according to claim 11 wherein said ribbon is comprised of a bio-compatible metal.
Claim 16
Dependent Claim
18 words
The lead extraction system according to claim 14 wherein at least a part of said ribbon is radiopaque.
Claim 17
Dependent Claim
24 words
The lead extraction system according to claim 1 wherein said means for severing comprise a chisel edge at a distal end of said ribbon.
Claim 18
Dependent Claim
36 words
The lead extraction system according to claim 16 wherein said chisel edge has a relatively long bevel on an outward side of said ribbon and a relatively short bevel on an inward side of said ribbon.
Claim 19
Dependent Claim
17 words
The lead extraction system according to claim 17 wherein said ribbon is comprised of a bio-compatible polymer.
Claim 20
Dependent Claim
18 words
The lead extraction system according to claim 18 wherein at least a part of said ribbon is radiopaque.
Claim 21
Dependent Claim
17 words
The lead extraction system according to claim 16 wherein said ribbon is comprised of a bio-compatible metal.
Claim 22
Dependent Claim
18 words
The lead extraction system according to claim 20 wherein at least a part of said ribbon is radiopaque.
Claim 23
Dependent Claim
17 words
The lead extraction system according to claim 1 further comprising a blunt end at said proximal end.
Claim 24
Dependent Claim
45 words
The lead extraction system according to claim 22 further comprising a handle adapted to be selectively attached at either said proximal or said distal end, whereby either said means for severing or said blunt end can be selectively advanced into the body of a patient.
Claim 25
Dependent Claim
17 words
The lead extraction system according to claim 1 wherein said ribbon is comprised of a bio-compatible polymer.
Claim 26
Dependent Claim
18 words
The lead extraction system according to claim 24 wherein at least a part of said ribbon is radiopaque.
Claim 27
Dependent Claim
17 words
The lead extraction system according to claim 1 wherein said ribbon is comprised of a bio-compatible metal.
Claim 28
Dependent Claim
18 words
The lead extraction system according to claim 26 wherein at least a part of said ribbon is radiopaque.
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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) | 2000-04-14 | 2000-10-14 | 2001-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-14 | 2004-10-14 | 2005-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-14 | 2008-10-14 | 2009-04-15 | $7700.00 | Window Closed / Lapsed |