WO2002080784A8 - Electrosurgical instrument reducing thermal spread - Google Patents

Electrosurgical instrument reducing thermal spread

Info

Publication number
WO2002080784A8
WO2002080784A8 PCT/US2001/011230 US0111230W WO02080784A8 WO 2002080784 A8 WO2002080784 A8 WO 2002080784A8 US 0111230 W US0111230 W US 0111230W WO 02080784 A8 WO02080784 A8 WO 02080784A8
Authority
WO
WIPO (PCT)
Prior art keywords
insulating substrate
end effectors
electrosurgical instrument
thermal spread
volts
Prior art date
Application number
PCT/US2001/011230
Other languages
French (fr)
Other versions
WO2002080784A1 (en
Inventor
Kate Ryland Lawes
Steven Paul Buysse
Sean T Dycus
Kristin D Johnson
Michael C Moses
Dave A Schechter
Original Assignee
Sherwood Serv Ag
Kate Ryland Lawes
Steven Paul Buysse
Sean T Dycus
Kristin D Johnson
Michael C Moses
Dave A Schechter
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 Sherwood Serv Ag, Kate Ryland Lawes, Steven Paul Buysse, Sean T Dycus, Kristin D Johnson, Michael C Moses, Dave A Schechter filed Critical Sherwood Serv Ag
Priority to AU2001249912A priority Critical patent/AU2001249912B9/en
Priority to EP01923197A priority patent/EP1372505B1/en
Priority to US10/474,273 priority patent/US7160298B2/en
Priority to DE60121050T priority patent/DE60121050T2/en
Priority to CA2443246A priority patent/CA2443246C/en
Priority to JP2002578823A priority patent/JP4394880B2/en
Publication of WO2002080784A1 publication Critical patent/WO2002080784A1/en
Publication of WO2002080784A8 publication Critical patent/WO2002080784A8/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical 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
    • A61B18/14Probes or electrodes therefor
    • A61B18/1442Probes having pivoting end effectors, e.g. forceps
    • A61B18/1445Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28Surgical forceps
    • A61B17/29Forceps for use in minimally invasive surgery
    • A61B2017/2926Details of heads or jaws
    • A61B2017/2945Curved jaws
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053Mechanical features of the instrument of device
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053Mechanical features of the instrument of device
    • A61B2018/00059Material properties
    • A61B2018/00071Electrical conductivity
    • A61B2018/00083Electrical conductivity low, i.e. electrically insulating
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345Vascular system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345Vascular system
    • A61B2018/00404Blood vessels other than those in or around the heart
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00619Welding
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/0063Sealing
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical 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
    • A61B18/1206Generators therefor
    • A61B2018/1246Generators therefor characterised by the output polarity
    • A61B2018/126Generators therefor characterised by the output polarity bipolar
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12Surgical 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
    • A61B18/14Probes or electrodes therefor
    • A61B2018/1405Electrodes having a specific shape
    • A61B2018/1425Needle
    • A61B2018/1432Needle curved

Abstract

An electrosurgical instrument which includes opposing end effectors and a handle for effecting movement of the end effectors relative to one another. The instrument includes a housing and a pair of electrodes. Each electode preferably includes an electrically conductive surface (e.g., which can be dimensioned for sealing, clamping and/or cutting) and an insulating substrate which is dimensioned to be engageable with the end effectors such that the electrodes reside in opposing relation relative to one another. The dimensions of the insulating substrate are different from the dimensions of the electrically conductive surface to reduce thermal spread to adjacent tissue structures. The insulating substrate is made from a material having a Comparative Tracking Index of about 300 volts to about 600 volts to reduce the incidence of flashover.
PCT/US2001/011230 1997-11-12 2001-04-06 Electrosurgical instrument reducing thermal spread WO2002080784A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU2001249912A AU2001249912B9 (en) 2001-04-06 2001-04-06 Electrosurgical instrument reducing thermal spread
EP01923197A EP1372505B1 (en) 1999-09-01 2001-04-06 Electrosurgical instrument reducing thermal spread
US10/474,273 US7160298B2 (en) 1997-11-12 2001-04-06 Electrosurgical instrument which reduces effects to adjacent tissue structures
DE60121050T DE60121050T2 (en) 2001-04-06 2001-04-06 A HEAT EXCHANGE REDUCING, ELECTRO-SURGICAL INSTRUMENT
CA2443246A CA2443246C (en) 2001-04-06 2001-04-06 Electrosurgical instrument reducing thermal spread
JP2002578823A JP4394880B2 (en) 2001-04-06 2001-04-06 Electrosurgical instruments to reduce thermal diffusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38788399A 1999-09-01 1999-09-01

Publications (2)

Publication Number Publication Date
WO2002080784A1 WO2002080784A1 (en) 2002-10-17
WO2002080784A8 true WO2002080784A8 (en) 2003-04-17

Family

ID=23531705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/011230 WO2002080784A1 (en) 1997-11-12 2001-04-06 Electrosurgical instrument reducing thermal spread

Country Status (4)

Country Link
US (1) US7135020B2 (en)
EP (1) EP1372505B1 (en)
ES (1) ES2261392T3 (en)
WO (1) WO2002080784A1 (en)

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