GB819994A - Improvements in or relating to surgical diathermy apparatus - Google Patents

Improvements in or relating to surgical diathermy apparatus

Info

Publication number
GB819994A
GB819994A GB2227656A GB2227656A GB819994A GB 819994 A GB819994 A GB 819994A GB 2227656 A GB2227656 A GB 2227656A GB 2227656 A GB2227656 A GB 2227656A GB 819994 A GB819994 A GB 819994A
Authority
GB
United Kingdom
Prior art keywords
electrodes
oscillator
diathermy apparatus
relating
tuned circuit
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.)
Expired
Application number
GB2227656A
Inventor
Cleavnor Horne
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.)
STANLEY COX Ltd
Original Assignee
STANLEY COX 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 STANLEY COX Ltd filed Critical STANLEY COX Ltd
Priority to GB2227656A priority Critical patent/GB819994A/en
Publication of GB819994A publication Critical patent/GB819994A/en
Expired 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
    • 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
    • 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
    • A61B2018/0066—Sensing and controlling the application of energy without feedback, i.e. open loop control

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

819,994. Diathermy apparatus. COX Ltd., S. Sept. 16, 1957 [July 18, 1956], No. 22276/56. Class 81 (2). In diathermy apparatus for coagulation purposes, the electrodes are connected to form part of the oscillator feed-back circuit, so that the variation in the output load, as coagulation proceeds, does not interfere with the operation of the apparatus. In the form described, a triode 1 is connected as a modified Hartley oscillator with its tuned circuit 3, 4 connected through a coupling condenser 9 and inductance 10, providing the effect of a high impedance source of oscillations, to a tuned circuit 11, 12 across which the electrodes are coupled by means of coaxial cable 13, 14. Thus the tapping on oscillator coil 3 is connected to the cathode through the patient's electrodes.
GB2227656A 1956-07-18 1956-07-18 Improvements in or relating to surgical diathermy apparatus Expired GB819994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2227656A GB819994A (en) 1956-07-18 1956-07-18 Improvements in or relating to surgical diathermy apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2227656A GB819994A (en) 1956-07-18 1956-07-18 Improvements in or relating to surgical diathermy apparatus

Publications (1)

Publication Number Publication Date
GB819994A true GB819994A (en) 1959-09-09

Family

ID=10176756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2227656A Expired GB819994A (en) 1956-07-18 1956-07-18 Improvements in or relating to surgical diathermy apparatus

Country Status (1)

Country Link
GB (1) GB819994A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299892A (en) * 1963-07-15 1967-01-24 Dynapower Systems Corp Therapeutic pulse generation, control and transmission circuit
US3329148A (en) * 1965-09-21 1967-07-04 Dynapower Systems Corp Of Cali Control of electrotherapeutic apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299892A (en) * 1963-07-15 1967-01-24 Dynapower Systems Corp Therapeutic pulse generation, control and transmission circuit
US3329148A (en) * 1965-09-21 1967-07-04 Dynapower Systems Corp Of Cali Control of electrotherapeutic apparatus

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