Patent US1785287A successfully refreshed from Google Patents.
Patent US5980516A successfully refreshed from Google Patents.
US5980516A
Expired / Lapsed
US
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Method and apparatus for R-F ablation
Assignee: Medtronic Inc
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Filing: 1998-03-09
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Granted: 1999-11-09
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Expires: 2018-03-09
Abstract
Abstract An ablation catheter and a method of performing cardiac ablation. The catheter is provided with a hollow, helical electrode, which is screwed into cardiac tissue at a desired ablation site and connected to a source of R-F electrical energy to ablate the tissue adjacent the electrode. Prior to ablation, a conductive fluid may be injected through the hollow needle, both to provide for cooling of the tissue adjacent the needle and to increase the conductivity of the tissue in the area 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 14:03
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B18/1492; A61B10/00; A61B10/02; A61B17/00; A61B2017/00017; A61B2017/00022; A61B2017/00084; A61B2017/00092; A61B2017/00097; A61B17/00234; A61B2017/00238; A61B2017/00274; A61B2017/00292; A61B17/22; A61B2017/22072; A61B2017/22074; A61B2017/22077; A61B2018/00005; A61B2018/00011; A61B2018/00023; A61B2018/00029; A61B2018/00053; A61B2018/00059; A61B2018/00065; A61B2018/00214; A61B2018/0022; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00452; A61B2018/00476; A61B2018/00547; A61B2018/00571; A61B2018/00577; A61B2018/00636; A61B2018/00773; A61B2018/00791; A61B2018/00821; A61B18/1206; A61B2018/1246; A61B2018/1253; A61B2018/126; A61B2018/1405; A61B2018/1425; A61B2018/1435; A61B2018/1472; A61B90/00; A61B90/06; A61B2090/064; A61B90/39; A61B2090/3925; A61B2218/00; A61B2218/001; A61B2218/002; A61M; A61M25/00; A61M25/0067; A61M25/0082; A61M25/0084; A61M2025/0089; A61M2230/00; A61M2230/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
90 words
A catheter system, comprising a catheter and a fluid reservoir, wherein said catheter comprises: a catheter body proximal end, a distal end, an internal longitudinal lumen; a hollow helical needle mounted to the distal end of said catheter body, in fluid communication with said longitudinal lumen; and a fluid coupling mounted to the proximal end of the catheter body, in fluid communication with said longitudinal lumen; and wherein said fluid reservoir is coupled to said fluid coupling whereby fluid in said reservoir can be delivered through said hollow helical needle.
Claim 2
Dependent Claim
90 words
A catheter system, comprising a catheter and a fluid reservoir, wherein said catheter comprises: a catheter body proximal end, a distal end, an internal longitudinal lumen; a hollow helical needle mounted to the distal end of said catheter body, in fluid communication with said longitudinal lumen; and a fluid coupling mounted to the proximal end of the catheter body, in fluid communication with said longitudinal lumen; and wherein said fluid reservoir is coupled to said fluid coupling whereby fluid in said reservoir can be delivered through said hollow helical needle.
Claim 3
Dependent Claim
20 words
A system according to claim 1 further comprising means for regulating flow from said reservoir to said hollow helical needle.
Claim 4
Dependent Claim
16 words
A system according to claim 1 or claim 2 wherein said reservoir contains a saline solution.
Claim 5
Dependent Claim
21 words
A system according to claim 3 wherein said catheter body further comprises an electrical conductor, coupled to said hollow helical needle.
Claim 6
Dependent Claim
16 words
A system according to claim 1 or claim 2 wherein said reservoir contains a conductive fluid.
Claim 7
Dependent Claim
29 words
A system according to claim 5 wherein said catheter body further comprises an electrical conductor, coupled to said hollow helical needle and extending proximally therefrom in said catheter body.
Claim 8
Dependent Claim
24 words
A system according to claim 1 or claim 2 wherein said catheter body comprises a torque transfer member, coupled to said hollow helical needle.
Claim 9
Dependent Claim
29 words
A system according to claim 7 wherein said torque transfer member comprises a torque cable, coupled to said hollow helical needle and extending proximally therefrom in said catheter body.
Claim 10
Dependent Claim
21 words
A system according to claim 7 wherein said torque transfer member is coupled to the proximal end of the catheter body.
Claim 11
Dependent Claim
17 words
A system according to claim 7 wherein said torque transfer member is fabricated of a conductive material.
Claim 12
Dependent Claim
13 words
A system according to claim 7 wherein said reservoir contains a conductive solution.
Claim 13
Dependent Claim
29 words
A system according to claim 11 wherein said catheter body further comprises an electrical conductor coupled to said hollow helical needle and extending proximally therefrom in said catheter body.
Claim 14
Dependent Claim
13 words
A system according to claim 7 wherein said reservoir contains a saline solution.
References Cited (Backward Citations)
US4026301A
Cited
US4674499A
Cited
US4564054A
Cited
US4799495A
Cited
US4886060A
Cited
US5165421A
Cited
US5003990A
Cited
US5030204A
Cited
US5002067A
Cited
US5003992A
Cited
US5104393A
Cited
US5060660A
Cited
US5122137A
Cited
US5083565A
Cited
US5122138A
Cited
US5433708A
Cited
WO1993004722A2
Cited
US5246014A
Cited
US5437660A
Cited
US5281218A
Cited
US5353800A
Cited
US5403311A
Cited
US5542944A
Cited
US5454807A
Cited
US5431649A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2002-11-08 | 2003-05-10 | 2003-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-08 | 2007-05-10 | 2007-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-08 | 2011-05-10 | 2011-11-09 | $7700.00 | Window Closed / Lapsed |