CA2088828A1 - Electrosurgical Trocar Assembly - Google Patents

Electrosurgical Trocar Assembly

Info

Publication number
CA2088828A1
CA2088828A1 CA2088828A CA2088828A CA2088828A1 CA 2088828 A1 CA2088828 A1 CA 2088828A1 CA 2088828 A CA2088828 A CA 2088828A CA 2088828 A CA2088828 A CA 2088828A CA 2088828 A1 CA2088828 A1 CA 2088828A1
Authority
CA
Canada
Prior art keywords
trocar
trocar assembly
cutting element
cannula
trocar device
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
CA2088828A
Other languages
French (fr)
Other versions
CA2088828C (en
Inventor
John S. Gentelia
Frank R. Williams
William C. Wheatley
Sharyn E. Longo
Deborah E. Forbey
Ernesto G. Sevilla
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.)
Conmed Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2088828A1 publication Critical patent/CA2088828A1/en
Application granted granted Critical
Publication of CA2088828C publication Critical patent/CA2088828C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3476—Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
    • 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
    • A61B18/1487—Trocar-like, i.e. devices producing an enlarged transcutaneous opening
    • 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
    • A61B18/1233—Generators therefor with circuits for assuring patient safety
    • 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
    • A61B2018/00738—Depth, e.g. depth of 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
    • A61B18/1206—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
    • 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
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0801—Prevention of accidental cutting or pricking
    • A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs

Abstract

A trocar assembly includes an elongate trocar device and a surrounding cannula. The trocar device incorporates an electrosurgical cutting element which is used to make a guide hole for the cannula and thus enables the remainder of the trocar assembly to enlarge the puncture. An electronic control circuit senses the current flow to the cutting element and, when the trocar device breaks through the wall of the organ being cut, this circuit cuts off the connection to the associated electrosurgical generator. Further control circuitry prevents a surgeon from resuming electrosurgery until a predetermined time period has elapsed. Multiple trocars of different diameters are provided for the same assembly.
CA002088828A 1992-03-17 1993-02-04 Electrosurgical trocar assembly Expired - Lifetime CA2088828C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85314992A 1992-03-17 1992-03-17
US853,149 1992-03-17

Publications (2)

Publication Number Publication Date
CA2088828A1 true CA2088828A1 (en) 1993-09-18
CA2088828C CA2088828C (en) 1999-07-20

Family

ID=25315205

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002088828A Expired - Lifetime CA2088828C (en) 1992-03-17 1993-02-04 Electrosurgical trocar assembly

Country Status (8)

Country Link
US (2) US5300070A (en)
JP (1) JPH067367A (en)
AU (1) AU663147B2 (en)
CA (1) CA2088828C (en)
DE (1) DE4308170A1 (en)
FR (1) FR2688683A1 (en)
GB (1) GB2266245B (en)
IT (1) IT1261902B (en)

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Publication number Publication date
IT1261902B (en) 1996-06-03
ITGE930016A0 (en) 1993-03-05
AU663147B2 (en) 1995-09-28
FR2688683A1 (en) 1993-09-24
CA2088828C (en) 1999-07-20
US5599348A (en) 1997-02-04
AU3182493A (en) 1993-09-23
US5300070A (en) 1994-04-05
GB2266245A (en) 1993-10-27
ITGE930016A1 (en) 1994-09-05
GB2266245B (en) 1996-02-07
GB9302191D0 (en) 1993-03-24
JPH067367A (en) 1994-01-18
FR2688683B1 (en) 1995-02-24
DE4308170A1 (en) 1993-09-23

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