Patent US5609151A successfully refreshed from Google Patents.
US5609151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for R-F ablation
Assignee: Medtronic Inc
•
Filing: 1994-09-08
•
Granted: 1997-03-11
•
Expires: 2014-09-08
Abstract
Abstract A method and apparatus for ablation of body tissue. A catheter provided with a hollow needle is employed both for mapping the location to be ablated by injection of an excitability reducing agent and for ablating tissue, employing RF energy in conjunction with an injected, conductive fluid.
Inventors
- 👤 Peter M. J. Mulier
- 👤 Michael F. Hoey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:20
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1492; A61B18/1477; A61B18/1402; A61B17/00; A61B17/00234; A61B2017/00292; A61B2018/00005; A61B2018/00011; A61B2018/00023; A61B2018/00029; A61B2018/00035; A61B2018/00041; A61B2018/00053; A61B2018/00059; A61B2018/00065; A61B2018/00071; A61B2018/00077; A61B18/1206; A61B2018/1246; A61B2018/1253; A61B2018/126; A61B2018/1405; A61B2018/1425; A61B2018/1435; A61B2018/1472; A61B18/16; A61B2018/162; A61B2218/00; A61B2218/001; A61B2218/002
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
78 words
A method of mapping cardiac tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends comprising a first tube having an internal longitudinal lumen open to the distal end of said catheter body to a desired tissue location; delivering fluid to said internal lumen and to said desired tissue location through said internal lumen; cooling said fluid while in said internal lumen; and monitoring the response of said tissue to said cooled fluid.
Claim 2
Independent Claim
78 words
A method of mapping cardiac tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends comprising a first tube having an internal longitudinal lumen open to the distal end of said catheter body to a desired tissue location; delivering fluid to said internal lumen and to said desired tissue location through said internal lumen; cooling said fluid while in said internal lumen; and monitoring the response of said tissue to said cooled fluid.
Claim 3
Dependent Claim
54 words
A method according to claim 1, wherein; said advancing step comprises advancing a catheter provided with a hollow needle coupled to the distal end of said internal lumen to said desired tissue location and penetrating tissue with said needle; and wherein said delivering step comprises delivering said fluid into said tissue through said needle.
Claim 4
Dependent Claim
42 words
A method according to claim 2, wherein; said advancing step comprises advancing a catheter provided with a hollow helical needle coupled to the distal end of said internal lumen to said desired tissue location and screwing said helical needle into said tissue.
Claim 5
Independent Claim
102 words
A method of ablating tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends and having an internal longitudinal lumen and a hollow conductive electrode mounted to the distal end of said catheter body and having an internal lumen coupled to the internal lumen of said catheter body to a desired tissue location; delivering a conductive fluid to said internal lumen of said catheter body and to said desired tissue location through said internal lumen of said electrode; heating said fluid while in said internal lumen of said catheter body; and delivering R-F energy to said electrode.
Claim 6
Independent Claim
102 words
A method of ablating tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends and having an internal longitudinal lumen and a hollow conductive electrode mounted to the distal end of said catheter body and having an internal lumen coupled to the internal lumen of said catheter body to a desired tissue location; delivering a conductive fluid to said internal lumen of said catheter body and to said desired tissue location through said internal lumen of said electrode; heating said fluid while in said internal lumen of said catheter body; and delivering R-F energy to said electrode.
Claim 7
Dependent Claim
58 words
A method according to claim 4, wherein; said advancing step comprises advancing a catheter provided with a hollow needle coupled to the distal end of said internal lumen of said catheter body to said desired tissue location and penetrating tissue with said needle; and wherein said delivering step comprises delivering said fluid into said tissue through said needle.
Claim 8
Dependent Claim
46 words
A method according to claim 5, wherein; said advancing step comprises advancing a catheter provided with a hollow helical needle coupled to the distal end of said internal lumen of said catheter body to said desired tissue location and screwing said helical needle into said tissue.
Claim 9
Independent Claim
96 words
A method of ablating tissue comprising: advancing an elongated catheter including a catheter body having proximal and distal ends and having an internal longitudinal lumen and a hollow member mounted to the distal end of said catheter body and having an internal lumen coupled to the internal lumen of said catheter body to a desired location and inserting said hollow member into tissue; delivering a fluid to said internal lumen of said catheter body and to said desired location through said hollow member; and heating said fluid while in said internal lumen of said catheter body.
Claim 10
Independent Claim
96 words
A method of ablating tissue comprising: advancing an elongated catheter including a catheter body having proximal and distal ends and having an internal longitudinal lumen and a hollow member mounted to the distal end of said catheter body and having an internal lumen coupled to the internal lumen of said catheter body to a desired location and inserting said hollow member into tissue; delivering a fluid to said internal lumen of said catheter body and to said desired location through said hollow member; and heating said fluid while in said internal lumen of said catheter body.
References Cited (Backward Citations)
US4506680A
Cited
US4920980A
Cited
US5165421A
Cited
US5030204A
Cited
SU1690786A1
Cited
US5104393A
Cited
US5222938A
Cited
US5060660A
Cited
US5122137A
Cited
US5083565A
Cited
WO1992020290A1
Cited
WO1993004724A1
Cited
US5281213A
Cited
US5334193A
Cited
US5348554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-10 | 2008-09-09 | 2009-03-11 | $7700.00 | Window Closed / Lapsed |