CA2247754A1 - Electrosurgical forceps - Google Patents

Electrosurgical forceps

Info

Publication number
CA2247754A1
CA2247754A1 CA2247754A CA2247754A CA2247754A1 CA 2247754 A1 CA2247754 A1 CA 2247754A1 CA 2247754 A CA2247754 A CA 2247754A CA 2247754 A CA2247754 A CA 2247754A CA 2247754 A1 CA2247754 A1 CA 2247754A1
Authority
CA
Canada
Prior art keywords
forceps
tissue
tines
electrically insulative
spacer assembly
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
CA2247754A
Other languages
French (fr)
Other versions
CA2247754C (en
Inventor
Philip E. Eggers
Andrew R. Eggers
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.)
Eggers and Associates Inc
Original Assignee
Eggers and Associates 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
Priority to US08/878,400 priority Critical patent/US5891142A/en
Application filed by Eggers and Associates Inc filed Critical Eggers and Associates Inc
Priority to CA002247754A priority patent/CA2247754C/en
Priority to EP98630052A priority patent/EP0986990A1/en
Priority to AU86152/98A priority patent/AU8615298A/en
Priority to JP10273936A priority patent/JP2000102545A/en
Publication of CA2247754A1 publication Critical patent/CA2247754A1/en
Application granted granted Critical
Publication of CA2247754C publication Critical patent/CA2247754C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/0088—Material properties ceramic
    • 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
    • A61B2018/00107—Coatings on the energy applicator
    • 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
    • A61B2018/00107—Coatings on the energy applicator
    • A61B2018/00136—Coatings on the energy applicator with polymer
    • 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
    • A61B2018/1246—Generators therefor characterised by the output polarity
    • A61B2018/126—Generators therefor characterised by the output polarity bipolar
    • 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
    • A61B2018/1425—Needle
    • A61B2018/143—Needle multiple needles
    • 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
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B2018/1462—Tweezers

Abstract

Surgical forceps which are configured having oppositely disposed tissue grasping surfaces at the tip regions of corresponding tines. An electrically insulative spacer assembly is positioned on and supported from at least one of the tissue grasping surfaces to space the tissue contacting surfaces apart an optimized distance, T, when the tines are in a substantially closed orientation. A preferred, strip form of spacer assembly formed of an electrically insulative material is employed and improved current paths are defined between the grasping surfaces to derive an efficient and effective hemostasis substantially without sticking of tissue to the surfaces. The geometric configuration of the spacer regions functions to enhance cleanability of the forceps and the tines of the forceps additionally are formed with side and nose surfaces at the tip regions having effective side surface current delivery areas improving forceps performance when used in a coagulative painting modality.
CA002247754A 1996-12-06 1998-09-18 Electrosurgical forceps Expired - Fee Related CA2247754C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US08/878,400 US5891142A (en) 1996-12-06 1997-06-18 Electrosurgical forceps
CA002247754A CA2247754C (en) 1997-06-18 1998-09-18 Electrosurgical forceps
EP98630052A EP0986990A1 (en) 1997-06-18 1998-09-18 Electrosurgical forceps
AU86152/98A AU8615298A (en) 1997-06-18 1998-09-22 Electrosurgical forceps
JP10273936A JP2000102545A (en) 1997-06-18 1998-09-28 Electric tweezers for surgery

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US08/878,400 US5891142A (en) 1996-12-06 1997-06-18 Electrosurgical forceps
CA002247754A CA2247754C (en) 1997-06-18 1998-09-18 Electrosurgical forceps
EP98630052A EP0986990A1 (en) 1997-06-18 1998-09-18 Electrosurgical forceps
AU86152/98A AU8615298A (en) 1997-06-18 1998-09-22 Electrosurgical forceps
JP10273936A JP2000102545A (en) 1997-06-18 1998-09-28 Electric tweezers for surgery

Publications (2)

Publication Number Publication Date
CA2247754A1 true CA2247754A1 (en) 1999-04-08
CA2247754C CA2247754C (en) 2000-06-06

Family

ID=27507283

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002247754A Expired - Fee Related CA2247754C (en) 1996-12-06 1998-09-18 Electrosurgical forceps

Country Status (5)

Country Link
US (1) US5891142A (en)
EP (1) EP0986990A1 (en)
JP (1) JP2000102545A (en)
AU (1) AU8615298A (en)
CA (1) CA2247754C (en)

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