US5876398A
Expired / Lapsed
US
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Method and apparatus for R-F ablation
Assignee: Medtronic Inc
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Filing: 1995-12-19
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Granted: 1999-03-02
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Expires: 2015-12-19
Abstract
Abstract An ablation catheter particularly adapted for use in ablation of cardiac tissue. The catheter is provided with an elongated electrode, intended to make contact with tissue to be ablated, in the heart, along its length. The electrode is mounted to a segment of the catheter which is porous, and the catheter is provided with an internal lumen for delivery of a conductive fluid such as Ringer's solution, to the porous portion of the catheter body, so that the conductive solution may be delivered along the entire length of the electrode.
Inventors
- 👤 Peter M. J. Mulier
- 👤 Michael F. Hoey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:09
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B2018/00053; A61B2018/00059; A61B2018/00065; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00571; A61B2018/00577; A61B2018/1405; A61B2018/1425; A61B2018/1435; A61B2018/1437; A61B2018/1472; A61B2218/00; A61B2218/001; A61B2218/002
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A method of ablation comprising: advancing a catheter, having a distal end carrying means extending distally therefrom for fixing said catheter to body tissue and an electrode extending at least two centimeters along an outer surface said catheter proximal to said distal end, to a desired location in a patient's body; fixing said distal end of said catheter to body tissue using said fixing means; after said fixing step, applying said electrode along a desired line of said body tissue; and thereafter ablating said body tissue along said desired line using said electrode.
Claim 2
Independent Claim
93 words
A method of ablation comprising: advancing a catheter, having a distal end carrying means extending distally therefrom for fixing said catheter to body tissue and an electrode extending at least two centimeters along an outer surface said catheter proximal to said distal end, to a desired location in a patient's body; fixing said distal end of said catheter to body tissue using said fixing means; after said fixing step, applying said electrode along a desired line of said body tissue; and thereafter ablating said body tissue along said desired line using said electrode.
Claim 3
Dependent Claim
42 words
A method according to claim 1 wherein said advancing step comprises advancing a catheter, having a tissue penetrating member extending distally from said distal end of said catheter and wherein said fixing step comprises advancing said penetrating member into said body tissue.
Claim 4
Dependent Claim
20 words
A method according to claim 2 wherein said advancing step comprises advancing a catheter having a helical tissue penetrating member.
Claim 5
Dependent Claim
23 words
A method according to claim 1 or claim 2 or claim 3 wherein said ablating step comprises applying R-F energy to said electrode.
Claim 6
Independent Claim
111 words
A method of ablation, comprising: advancing a catheter having a distal end and having a helical, tissue penetrating member extending from said distal end of said catheter and an elongated electrode, located proximal to said helical member and extending along a distal segment of an outer surface of said catheter, to a desired location in a patient's body; fixing said distal end of said catheter to body tissue by rotating said helical member into body tissue; after said fixing step applying said elongated electrode along said distal segment of said catheter to a desired line along said body tissue; and ablating said body tissue along said desired line using said electrode.
Claim 7
Independent Claim
111 words
A method of ablation, comprising: advancing a catheter having a distal end and having a helical, tissue penetrating member extending from said distal end of said catheter and an elongated electrode, located proximal to said helical member and extending along a distal segment of an outer surface of said catheter, to a desired location in a patient's body; fixing said distal end of said catheter to body tissue by rotating said helical member into body tissue; after said fixing step applying said elongated electrode along said distal segment of said catheter to a desired line along said body tissue; and ablating said body tissue along said desired line using said electrode.
Claim 8
Dependent Claim
17 words
A method according to claim 5 wherein said ablating step comprises applying electrical energy to said electrode.
Claim 9
Dependent Claim
17 words
A method according to claim 6 wherein said ablating step comprises applying R-F energy to said electrode.
Claim 10
Dependent Claim
29 words
A method according to claim 5 or claim 7 wherein said advancing step comprises advancing a catheter having an elongated electrode extending at least two centimeters along said catheter.
Claim 11
Dependent Claim
30 words
A method according to claim 5 or claim 7 wherein said advancing step comprises advancing a catheter having an elongated coil electrode extending at least two centimeters along said catheter.
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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) | 2002-03-01 | 2002-08-31 | 2003-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-01 | 2006-08-31 | 2007-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-01 | 2010-08-31 | 2011-03-02 | $7700.00 | Window Closed / Lapsed |