CA2854378A1 - Electrosurgical instrument - Google Patents

Electrosurgical instrument Download PDF

Info

Publication number
CA2854378A1
CA2854378A1 CA2854378A CA2854378A CA2854378A1 CA 2854378 A1 CA2854378 A1 CA 2854378A1 CA 2854378 A CA2854378 A CA 2854378A CA 2854378 A CA2854378 A CA 2854378A CA 2854378 A1 CA2854378 A1 CA 2854378A1
Authority
CA
Canada
Prior art keywords
distal end
shaft
sheath
electrosurgical instrument
end portion
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
CA2854378A
Other languages
French (fr)
Other versions
CA2854378C (en
Inventor
Richard John Hoodless
Richard John Keogh
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.)
Gyrus Medical Ltd
Original Assignee
Gyrus Medical Ltd
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 Gyrus Medical Ltd filed Critical Gyrus Medical Ltd
Publication of CA2854378A1 publication Critical patent/CA2854378A1/en
Application granted granted Critical
Publication of CA2854378C publication Critical patent/CA2854378C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61B18/1492—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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P17/00—Metal-working operations, not covered by a single other subclass or another group in this subclass
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00526—Methods of manufacturing
    • 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
    • A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe
    • 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
    • A61B2018/1472—Probes or electrodes therefor for use with liquid electrolyte, e.g. virtual electrodes
    • 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
    • A61B18/16—Indifferent or passive electrodes for grounding
    • A61B2018/162—Indifferent or passive electrodes for grounding located on the probe body
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing

Abstract

An electrosurgical instrument is provided for the treatment of tissue, the instrument (3) including a shaft (14) and a tip portion including at least one electrode (16), located at the distal end of the shaft. A fluid impermeable sheath (25) covers at least a proportion of the shaft and extends to the tip portion where it terminates in a distal end portion (26). A metallic shroud (29) is provided, comprising an annular ring portion (30) and a rearwardly extending cylindrical portion (31). The ring portion (30) is connected to the tip portion, and the cylindrical portion (31) overlies the distal end portion (26) of the sheath (25) so as to prevent ingress of fluids at the distal end portion of the sheath.
CA2854378A 2013-06-24 2014-06-16 Electrosurgical instrument Active CA2854378C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1311197.6 2013-06-24
GB1311197.6A GB2515493A (en) 2013-06-24 2013-06-24 Electrosurgical instrument

Publications (2)

Publication Number Publication Date
CA2854378A1 true CA2854378A1 (en) 2014-12-24
CA2854378C CA2854378C (en) 2021-08-10

Family

ID=48998848

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2854378A Active CA2854378C (en) 2013-06-24 2014-06-16 Electrosurgical instrument

Country Status (7)

Country Link
US (1) US9820809B2 (en)
EP (1) EP2821021B1 (en)
JP (1) JP6490353B2 (en)
CN (1) CN104224308B (en)
AU (1) AU2014203262B2 (en)
CA (1) CA2854378C (en)
GB (1) GB2515493A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11457978B2 (en) 2018-06-18 2022-10-04 Stryker Corporation Radiofrequency probe and methods of use and manufacture of same

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848339A (en) * 1984-09-17 1989-07-18 Xintec Corporation Laser heated intravascular cautery cap assembly
US4742818A (en) * 1986-10-17 1988-05-10 Baxter Travenol Laboratories, Inc. Soakable eyepiece for endoscopes
US5372138A (en) * 1988-03-21 1994-12-13 Boston Scientific Corporation Acousting imaging catheters and the like
US5211625A (en) * 1990-03-20 1993-05-18 Olympus Optical Co., Ltd. Ultrasonic treatment apparatus
CA2273467C (en) * 1998-06-04 2009-02-17 Cordis Webster, Inc. Catheter for injecting therapeutic and diagnostic agents
US6379350B1 (en) * 1999-10-05 2002-04-30 Oratec Interventions, Inc. Surgical instrument for ablation and aspiration
JP4324755B2 (en) * 2001-01-30 2009-09-02 日本ゼオン株式会社 Bipolar electrical treatment instrument
US7566333B2 (en) * 2003-08-11 2009-07-28 Electromedical Associates Llc Electrosurgical device with floating-potential electrode and methods of using the same
NL1024658C2 (en) * 2003-10-29 2005-05-02 Univ Medisch Centrum Utrecht Catheter and method, in particular for ablation and the like.
US20080091193A1 (en) * 2005-05-16 2008-04-17 James Kauphusman Irrigated ablation catheter having magnetic tip for magnetic field control and guidance
JP4682017B2 (en) * 2005-10-31 2011-05-11 Ｈｏｙａ株式会社 Endoscopic high-frequency incision tool
EP2217166B1 (en) * 2007-11-03 2017-11-22 Boston Scientific Scimed, Inc. Bipolar electrosurgical probe having insulated overlapping conductive elements
WO2009061860A1 (en) * 2007-11-05 2009-05-14 Stereotaxis, Inc. Magnetically guided energy delivery apparatus
US8255035B2 (en) * 2007-12-31 2012-08-28 St. Jude Medical, Atrial Fibrillation Division, Inc. Coated hypodermic needle
WO2010028053A1 (en) * 2008-09-02 2010-03-11 Medtronic Ablation Frontiers Llc Irrigated ablation catheter system and methods
DE102009007205A1 (en) * 2009-02-03 2010-08-05 Aesculap Ag Surgical instrument
JP5037727B2 (en) * 2010-01-29 2012-10-03 オリンパスメディカルシステムズ株式会社 Electrosurgical instrument
GB2477351B (en) * 2010-02-01 2015-11-04 Gyrus Medical Ltd Electrosurgical instrument

Also Published As

Publication number Publication date
CN104224308A (en) 2014-12-24
AU2014203262B2 (en) 2018-08-09
US20140378969A1 (en) 2014-12-25
CN104224308B (en) 2018-10-16
EP2821021A1 (en) 2015-01-07
CA2854378C (en) 2021-08-10
GB201311197D0 (en) 2013-08-14
JP6490353B2 (en) 2019-03-27
AU2014203262A1 (en) 2015-01-22
US9820809B2 (en) 2017-11-21
EP2821021B1 (en) 2019-09-18
JP2015006342A (en) 2015-01-15
GB2515493A (en) 2014-12-31

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Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20190328