CA2168860A1 - Method and Apparatus for R-F Ablation - Google Patents

Method and Apparatus for R-F Ablation

Info

Publication number
CA2168860A1
CA2168860A1 CA2168860A CA2168860A CA2168860A1 CA 2168860 A1 CA2168860 A1 CA 2168860A1 CA 2168860 A CA2168860 A CA 2168860A CA 2168860 A CA2168860 A CA 2168860A CA 2168860 A1 CA2168860 A1 CA 2168860A1
Authority
CA
Canada
Prior art keywords
ablation
tissue
electrode
needle
hollow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2168860A
Other languages
French (fr)
Other versions
CA2168860C (en
Inventor
Peter M. J. Mulier
Michael F. Hoey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medtronic Inc
Original Assignee
Peter M. J. Mulier
Michael F. Hoey
Medtronic, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peter M. J. Mulier, Michael F. Hoey, Medtronic, Inc. filed Critical Peter M. J. Mulier
Publication of CA2168860A1 publication Critical patent/CA2168860A1/en
Application granted granted Critical
Publication of CA2168860C publication Critical patent/CA2168860C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

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    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
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    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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    • A61B2017/22077—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with an instrument channel, e.g. for replacing one instrument by the other the instrument being only slidable in a channel, e.g. advancing optical fibre through a channel with a part piercing the tissue
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    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—Ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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Abstract

An ablation cathetere 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.
CA002168860A 1993-08-27 1994-07-25 Method and apparatus for r-f ablation Expired - Fee Related CA2168860C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/113,441 US5431649A (en) 1993-08-27 1993-08-27 Method and apparatus for R-F ablation
US08/113,441 1993-08-27
PCT/US1994/008251 WO1995005781A1 (en) 1993-08-27 1994-07-25 Method and apparatus for r-f ablation

Publications (2)

Publication Number Publication Date
CA2168860A1 true CA2168860A1 (en) 1995-03-02
CA2168860C CA2168860C (en) 2000-02-08

Family

ID=22349430

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002168860A Expired - Fee Related CA2168860C (en) 1993-08-27 1994-07-25 Method and apparatus for r-f ablation

Country Status (7)

Country Link
US (2) US5431649A (en)
EP (1) EP0774926B1 (en)
JP (1) JP2761440B2 (en)
AU (1) AU676630B2 (en)
CA (1) CA2168860C (en)
DE (1) DE69419038T2 (en)
WO (1) WO1995005781A1 (en)

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AU676630B2 (en) 1997-03-13
US5431649A (en) 1995-07-11
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WO1995005781A1 (en) 1995-03-02
AU1427995A (en) 1995-03-21
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US6016809A (en) 2000-01-25

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