JPS4831556B1 - - Google Patents

Info

Publication number
JPS4831556B1
JPS4831556B1 JP44015900A JP1590069A JPS4831556B1 JP S4831556 B1 JPS4831556 B1 JP S4831556B1 JP 44015900 A JP44015900 A JP 44015900A JP 1590069 A JP1590069 A JP 1590069A JP S4831556 B1 JPS4831556 B1 JP S4831556B1
Authority
JP
Japan
Prior art keywords
endoscope
source
light unit
endoscopic apparatus
current
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.)
Pending
Application number
JP44015900A
Other languages
English (en)
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 filed Critical
Publication of JPS4831556B1 publication Critical patent/JPS4831556B1/ja
Pending 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)
JP44015900A 1968-03-05 1969-03-04 Pending JPS4831556B1 (ja)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
JPS4831556B1 true JPS4831556B1 (ja) 1973-09-29

Family

ID=26247601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44015900A Pending JPS4831556B1 (ja) 1968-03-05 1969-03-04

Country Status (5)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5078863A (ja) * 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

Families Citing this family (2)

* 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
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5078863A (ja) * 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

Also Published As

Publication number Publication date
FR2003235A1 (ja) 1969-11-07
GB1191414A (en) 1970-05-13
DE1910810B2 (de) 1974-08-29
DE1910810A1 (de) 1969-10-02
SE359224B (ja) 1973-08-27
DE1910810C3 (de) 1975-04-10

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