WO1999058070A3 - A radio-frequency generator for an ablation device - Google Patents

A radio-frequency generator for an ablation device Download PDF

Info

Publication number
WO1999058070A3
WO1999058070A3 PCT/US1999/009904 US9909904W WO9958070A3 WO 1999058070 A3 WO1999058070 A3 WO 1999058070A3 US 9909904 W US9909904 W US 9909904W WO 9958070 A3 WO9958070 A3 WO 9958070A3
Authority
WO
WIPO (PCT)
Prior art keywords
ablation
transformation circuit
radio frequency
frequency signal
level
Prior art date
Application number
PCT/US1999/009904
Other languages
French (fr)
Other versions
WO1999058070A2 (en
Inventor
Bruno Strul
Csaba Truckai
Russel Mahlon Sampson
Mark Leo Kane
Original Assignee
Novacept
Bruno Strul
Csaba Truckai
Russel Mahlon Sampson
Mark Leo Kane
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 Novacept, Bruno Strul, Csaba Truckai, Russel Mahlon Sampson, Mark Leo Kane filed Critical Novacept
Priority to DE69940599T priority Critical patent/DE69940599D1/en
Priority to CA002331321A priority patent/CA2331321A1/en
Priority to AU39730/99A priority patent/AU3973099A/en
Priority to JP2000547924A priority patent/JP2003526385A/en
Priority to EP99922822A priority patent/EP1076516B1/en
Publication of WO1999058070A2 publication Critical patent/WO1999058070A2/en
Publication of WO1999058070A3 publication Critical patent/WO1999058070A3/en
Priority to NO20005623A priority patent/NO20005623L/en
Priority to HK01105168.4A priority patent/HK1034655A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • 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
    • A61B18/1206—Generators therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • 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
    • A61B18/1485—Probes or electrodes therefor having a short rigid shaft for accessing the inner body through natural openings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00559—Female reproductive organs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00684—Sensing and controlling the application of energy using lookup tables
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00702—Power or energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00761—Duration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00779—Power or energy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00875—Resistance or impedance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/0091—Handpieces of the surgical instrument or device
    • A61B2018/00916—Handpieces of the surgical instrument or device with means for switching or controlling the main function of the instrument or device
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • 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
    • A61B18/1206—Generators therefor
    • A61B2018/124—Generators therefor switching the output to different electrodes, e.g. sequentially
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
    • A61B2218/007—Aspiration

Abstract

An apparatus and method for use in performing ablation of organs and other tissues includes a radio frequency generator which provides a radio frequency signal to ablation electrodes. The power level of the radio frequency signal is determined based on the subject area of ablation. The radio frequency signal is coupled with the ablation electrodes through a transformation circuit. The transformation circuit includes a transformer having a double secondary windings that can be connected into or out of use depending upon the load condition, creating this way a high impedance transformation circuit and a low impedance transformation circuit. The high or low impedance transformation circuit is selected based on the impedance of the ablation electrodes in contact with the subject tissue. Vacuum level, impedance level, resistance level, and time are measured during ablation. If these parameters exceed determinable limits the ablation procedure is terminated.
PCT/US1999/009904 1998-05-08 1999-05-07 A radio-frequency generator for an ablation device WO1999058070A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE69940599T DE69940599D1 (en) 1998-05-08 1999-05-07 RADIO FREQUENCY GENERATOR FOR AN ABLATION REQUIREMENT
CA002331321A CA2331321A1 (en) 1998-05-08 1999-05-07 A radio-frequency generator for an ablation device
AU39730/99A AU3973099A (en) 1998-05-08 1999-05-07 A radio-frequency generator for an ablation device
JP2000547924A JP2003526385A (en) 1998-05-08 1999-05-07 Radio frequency generator for ablation device
EP99922822A EP1076516B1 (en) 1998-05-08 1999-05-07 A radio-frequency generator for an ablation device
NO20005623A NO20005623L (en) 1998-05-08 2000-11-07 Radio frequency generator for an ablation device
HK01105168.4A HK1034655A1 (en) 1998-05-08 2001-07-24 A radio-frequency generator for an ablation device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8471298P 1998-05-08 1998-05-08
US60/084,712 1998-05-08

Publications (2)

Publication Number Publication Date
WO1999058070A2 WO1999058070A2 (en) 1999-11-18
WO1999058070A3 true WO1999058070A3 (en) 2000-02-17

Family

ID=22186749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/009904 WO1999058070A2 (en) 1998-05-08 1999-05-07 A radio-frequency generator for an ablation device

Country Status (10)

Country Link
US (5) US6508815B1 (en)
EP (1) EP1076516B1 (en)
JP (1) JP2003526385A (en)
CN (1) CN1308510A (en)
AT (1) ATE425702T1 (en)
AU (1) AU3973099A (en)
CA (1) CA2331321A1 (en)
HK (1) HK1034655A1 (en)
NO (1) NO20005623L (en)
WO (1) WO1999058070A2 (en)

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US9554853B2 (en) 1998-05-08 2017-01-31 Hologic, Inc. Radio-frequency generator for powering an ablation device

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AU3973099A (en) 1999-11-29
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