WO2000024463A3 - Directional reflector shield assembly for a microwave ablation instrument - Google Patents

Directional reflector shield assembly for a microwave ablation instrument Download PDF

Info

Publication number
WO2000024463A3
WO2000024463A3 PCT/US1999/024047 US9924047W WO0024463A3 WO 2000024463 A3 WO2000024463 A3 WO 2000024463A3 US 9924047 W US9924047 W US 9924047W WO 0024463 A3 WO0024463 A3 WO 0024463A3
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
shield assembly
microwave ablation
ablation instrument
directional reflector
Prior art date
Application number
PCT/US1999/024047
Other languages
French (fr)
Other versions
WO2000024463A2 (en
Inventor
Dany Berube
Robert E Woodard
Theodore C Ormsby
Original Assignee
Fidus Med Tech Corp
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 Fidus Med Tech Corp filed Critical Fidus Med Tech Corp
Priority to DE69925621T priority Critical patent/DE69925621T2/en
Priority to EP99954926A priority patent/EP1123135B1/en
Priority to AT99954926T priority patent/ATE296666T1/en
Publication of WO2000024463A2 publication Critical patent/WO2000024463A2/en
Publication of WO2000024463A3 publication Critical patent/WO2000024463A3/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
    • A61B18/14—Probes or electrodes 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
    • A61B18/1402—Probes for open surgery
    • 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
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • 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
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
    • 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
    • A61B2018/00273—Anchoring means for temporary attachment of a device to tissue
    • A61B2018/00291—Anchoring means for temporary attachment of a device to tissue using suction
    • 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
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • 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
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • A61B2018/00363—Epicardium
    • 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
    • A61B2018/00571—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
    • 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
    • A61B2018/1405—Electrodes having a specific shape
    • A61B2018/1435—Spiral
    • A61B2018/1437—Spiral whereby the windings of the spiral touch each other such as to create a continuous surface

Abstract

A directional reflective shield assembly (25) is provided for a microwave ablation instrument (20) having an antenna (23) coupled to a transmission line (21). The antenna (23) is formed to generate an electric field sufficiently strong to cause tissue ablation. The shield assembly (25) includes a cradle device (26) disposed about the antenna (23) in a manner substantially shielding a surrounding area of the antenna (23) from the electric field radially generated therefrom. The cradle device (26) further provides a window portion (27) communicating with the antenna (23) which is strategically located relative the antenna to direct a majority of the field generally in a predetermined direction.
PCT/US1999/024047 1998-10-23 1999-10-22 Directional reflector shield assembly for a microwave ablation instrument WO2000024463A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69925621T DE69925621T2 (en) 1998-10-23 1999-10-22 DIRECTIONAL, REFLECTIVE SHIELDING FOR A MICROWAVE DISCOVERING DEVICE
EP99954926A EP1123135B1 (en) 1998-10-23 1999-10-22 Directional reflector shield assembly for a microwave ablation instrument
AT99954926T ATE296666T1 (en) 1998-10-23 1999-10-22 DIRECTIONAL REFLECTIVE SHIELD FOR A MICROWAVE ABLATION DEVICE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/178,066 1998-10-23
US09/178,066 US6245062B1 (en) 1998-10-23 1998-10-23 Directional reflector shield assembly for a microwave ablation instrument

Publications (2)

Publication Number Publication Date
WO2000024463A2 WO2000024463A2 (en) 2000-05-04
WO2000024463A3 true WO2000024463A3 (en) 2000-09-28

Family

ID=22651049

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/024047 WO2000024463A2 (en) 1998-10-23 1999-10-22 Directional reflector shield assembly for a microwave ablation instrument

Country Status (6)

Country Link
US (8) US6245062B1 (en)
EP (1) EP1123135B1 (en)
AT (1) ATE296666T1 (en)
DE (1) DE69925621T2 (en)
ES (1) ES2241336T3 (en)
WO (1) WO2000024463A2 (en)

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US20030036754A1 (en) 2003-02-20
US20060015094A1 (en) 2006-01-19

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