FR2332035A1 - Shrt:circuit projected supply to surgical equipment - is disconnected by differencing circuit coupled to transformer primary monitoring load coupled to transformer secondary - Google Patents

Shrt:circuit projected supply to surgical equipment - is disconnected by differencing circuit coupled to transformer primary monitoring load coupled to transformer secondary

Info

Publication number
FR2332035A1
FR2332035A1 FR7633891A FR7633891A FR2332035A1 FR 2332035 A1 FR2332035 A1 FR 2332035A1 FR 7633891 A FR7633891 A FR 7633891A FR 7633891 A FR7633891 A FR 7633891A FR 2332035 A1 FR2332035 A1 FR 2332035A1
Authority
FR
France
Prior art keywords
circuit
coupled
shrt
disconnected
transformer
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
FR7633891A
Other languages
French (fr)
Other versions
FR2332035B1 (en
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2332035A1 publication Critical patent/FR2332035A1/en
Application granted granted Critical
Publication of FR2332035B1 publication Critical patent/FR2332035B1/fr
Granted 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
    • A61B18/1206—Generators therefor

Abstract

The HF surgical apparatus has power supply to surgical electrodes automatically cut off when these electrodes are short circuited. The normal load varies between 50 and 2000 ohms. The load (Rp) is coupled to the secondary of an output transformer (6) whose primary is connected to a resistance monitoring circuit (12-20). This circuit monitors the resistance of the load in the secondary circuit. It produces a turn-off signal for the HF generator (1) when the resistance drops below a given value. The monitor consists of a differencing circuit.
FR7633891A 1975-11-19 1976-11-10 Shrt:circuit projected supply to surgical equipment - is disconnected by differencing circuit coupled to transformer primary monitoring load coupled to transformer secondary Granted FR2332035A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752551942 DE2551942C3 (en) 1975-11-19 1975-11-19 High-frequency surgical device

Publications (2)

Publication Number Publication Date
FR2332035A1 true FR2332035A1 (en) 1977-06-17
FR2332035B1 FR2332035B1 (en) 1980-06-27

Family

ID=5962128

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7633891A Granted FR2332035A1 (en) 1975-11-19 1976-11-10 Shrt:circuit projected supply to surgical equipment - is disconnected by differencing circuit coupled to transformer primary monitoring load coupled to transformer secondary

Country Status (2)

Country Link
DE (1) DE2551942C3 (en)
FR (1) FR2332035A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805921A1 (en) * 1988-02-25 1989-09-07 Flachenecker Gerhard HIGH FREQUENCY POWER GENERATOR
DE3911416A1 (en) * 1989-04-07 1990-10-11 Delma Elektro Med App ELECTRO-SURGICAL HIGH-FREQUENCY DEVICE

Also Published As

Publication number Publication date
DE2551942A1 (en) 1977-05-26
DE2551942B2 (en) 1977-09-29
FR2332035B1 (en) 1980-06-27
DE2551942C3 (en) 1978-05-03

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Legal Events

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