US5906613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for R-F ablation
Assignee: Medtronic Inc
•
Filing: 1997-12-03
•
Granted: 1999-05-25
•
Expires: 2017-12-03
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 11:42
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: 16
Claim 1
Independent Claim
103 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 and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; delivering fluid to said internal lumen and to said desired tissue location through said aperture; cooling said fluid while in said internal lumen; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle; and repeating said delivering and monitoring steps.
Claim 2
Independent Claim
103 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 and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; delivering fluid to said internal lumen and to said desired tissue location through said aperture; cooling said fluid while in said internal lumen; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle; and repeating said delivering and monitoring steps.
Claim 3
Dependent Claim
38 words
A method according to claim 1 wherein said advancing step comprises advancing an elongated catheter having a hollow helical needle having a laterally opening aperture and wherein said rotating step comprises screwing said helical needle into said tissue.
Claim 4
Independent Claim
140 words
A method of mapping and ablating 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 and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; delivering fluid to said internal lumen and to said desired tissue location through said aperture; cooling said fluid while in said internal lumen; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle to a different position; repeating said delivering and monitoring steps until a desired response of said tissue is obtained; while said needle is in the position in which said desired response is obtained, applying electrical energy to said tissue via said needle.
Claim 5
Independent Claim
140 words
A method of mapping and ablating 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 and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; delivering fluid to said internal lumen and to said desired tissue location through said aperture; cooling said fluid while in said internal lumen; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle to a different position; repeating said delivering and monitoring steps until a desired response of said tissue is obtained; while said needle is in the position in which said desired response is obtained, applying electrical energy to said tissue via said needle.
Claim 6
Dependent Claim
21 words
A method according to claim 3, wherein said applying electrical energy step comprises delivery of a conductive fluid through said aperture.
Claim 7
Dependent Claim
20 words
A method according to claim 3 wherein said fluid delivering step comprises delivery of a conductive fluid through said aperture.
Claim 8
Dependent Claim
44 words
A method according to claim 3 or claim 4 or claim 5 wherein said advancing step comprises advancing an elongated catheter having a hollow helical needle having a laterally opening aperture and wherein said rotating step comprises screwing said helical needle into said tissue.
Claim 9
Independent Claim
94 words
A method of mapping tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends comprising a first tube having an internal longitudinal lumen and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; cooling a fluid; delivering said cooled fluid to said desired tissue location through said aperture; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle; and repeating said delivering and monitoring steps.
Claim 10
Independent Claim
94 words
A method of mapping tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends comprising a first tube having an internal longitudinal lumen and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; cooling a fluid; delivering said cooled fluid to said desired tissue location through said aperture; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle; and repeating said delivering and monitoring steps.
Claim 11
Dependent Claim
38 words
A method according to claim 7 wherein said advancing step comprises advancing an elongated catheter having a hollow helical needle having a laterally opening aperture and wherein said rotating step comprises screwing said helical needle into said tissue.
Claim 12
Independent Claim
131 words
A method of mapping and ablating tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends comprising a first tube having an internal longitudinal lumen and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; cooling a fluid; delivering said cooled fluid to said desired tissue location through said aperture; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle to a different position; repeating said delivering and monitoring steps until a desired response of said tissue is obtained; while said needle is in the position in which said desired response is obtained, applying electrical energy to said tissue via said needle.
Claim 13
Independent Claim
131 words
A method of mapping and ablating tissue, comprising: advancing an elongated catheter including a catheter body having proximal and distal ends comprising a first tube having an internal longitudinal lumen and a hollow needle having a laterally opening aperture coupled to the distal end of said internal lumen to a desired tissue location and inserting said needle into said tissue; cooling a fluid; delivering said cooled fluid to said desired tissue location through said aperture; monitoring the response of said tissue to said cooled fluid; rotating said hollow needle to a different position; repeating said delivering and monitoring steps until a desired response of said tissue is obtained; while said needle is in the position in which said desired response is obtained, applying electrical energy to said tissue via said needle.
Claim 14
Dependent Claim
21 words
A method according to claim 9, wherein said applying electrical energy step comprises delivery of a conductive fluid through said aperture.
Claim 15
Dependent Claim
20 words
A method according to claim 9 wherein said fluid delivering step comprises delivery of a conductive fluid through said aperture.
Claim 16
Dependent Claim
44 words
A method according to claim 9 or claim 10 or claim 11 wherein said advancing step comprises advancing an elongated catheter having a hollow helical needle having a laterally opening aperture and wherein said rotating step comprises screwing said helical needle into said tissue.
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
US5609151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-05-24 | 2002-11-23 | 2003-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-24 | 2006-11-23 | 2007-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-24 | 2010-11-23 | 2011-05-25 | $7700.00 | Window Closed / Lapsed |