DE1910810C3 - Endoskop mit einer über einen Transformator gespeisten distalen Glühbirne - Google Patents

Endoskop mit einer über einen Transformator gespeisten distalen Glühbirne

Info

Publication number
DE1910810C3
DE1910810C3 DE19691910810 DE1910810A DE1910810C3 DE 1910810 C3 DE1910810 C3 DE 1910810C3 DE 19691910810 DE19691910810 DE 19691910810 DE 1910810 A DE1910810 A DE 1910810A DE 1910810 C3 DE1910810 C3 DE 1910810C3
Authority
DE
Germany
Prior art keywords
endoscope
oscillator
transformer
voltage
patient
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
DE19691910810
Other languages
German (de)
English (en)
Other versions
DE1910810B2 (de
DE1910810A1 (de
Inventor
John Harold London Blackett
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.)
MATBURN (HOLDINGS) Ltd LONDON
Original Assignee
MATBURN (HOLDINGS) Ltd LONDON
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 MATBURN (HOLDINGS) Ltd LONDON filed Critical MATBURN (HOLDINGS) Ltd LONDON
Publication of DE1910810A1 publication Critical patent/DE1910810A1/de
Publication of DE1910810B2 publication Critical patent/DE1910810B2/de
Application granted granted Critical
Publication of DE1910810C3 publication Critical patent/DE1910810C3/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/282—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
    • A61B1/00006—Operational features of endoscopes characterised by electronic signal processing of control signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0661—Endoscope light sources
    • A61B1/0676—Endoscope light sources at distal tip of an endoscope
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/282—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable
    • H03K3/2823—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator astable using two active transistor of the same conductivity type

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Power Engineering (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Signal Processing (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
DE19691910810 1968-03-05 1969-03-04 Endoskop mit einer über einen Transformator gespeisten distalen Glühbirne Expired DE1910810C3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1055868 1968-03-05
GB3931568A GB1191414A (en) 1968-03-05 1968-03-05 Endoscopic Supply Unit.

Publications (3)

Publication Number Publication Date
DE1910810A1 DE1910810A1 (de) 1969-10-02
DE1910810B2 DE1910810B2 (de) 1974-08-29
DE1910810C3 true DE1910810C3 (de) 1975-04-10

Family

ID=26247601

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691910810 Expired DE1910810C3 (de) 1968-03-05 1969-03-04 Endoskop mit einer über einen Transformator gespeisten distalen Glühbirne

Country Status (5)

Country Link
JP (1) JPS4831556B1 (https=)
DE (1) DE1910810C3 (https=)
FR (1) FR2003235A1 (https=)
GB (1) GB1191414A (https=)
SE (1) SE359224B (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595221A (en) * 1969-03-04 1971-07-27 Matburn Holdings Ltd Endoscopic having illumination supply unit
JPS5078863A (https=) * 1973-11-16 1975-06-26
JPS6273793A (ja) * 1985-09-27 1987-04-04 山水電気株式会社 プリント配線基板
JPS6381897A (ja) * 1986-09-25 1988-04-12 日本シイエムケイ株式会社 プリント配線板
CN111990945B (zh) * 2020-09-17 2023-03-14 河南省中医院（河南中医药大学第二附属医院） 一种肛肠科内窥镜信号管理系统

Also Published As

Publication number Publication date
FR2003235A1 (https=) 1969-11-07
SE359224B (https=) 1973-08-27
DE1910810B2 (de) 1974-08-29
GB1191414A (en) 1970-05-13
JPS4831556B1 (https=) 1973-09-29
DE1910810A1 (de) 1969-10-02

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee