Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
  • A61B5/30—Input circuits therefor
  • A61B5/307—Input circuits therefor specially adapted for particular uses
  • A61B5/308—Input circuits therefor specially adapted for particular uses for electrocardiography [ECG]
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/38—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
  • H03F3/387—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only
  • H03F3/393—DC amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only with field-effect devices
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03G—CONTROL OF AMPLIFICATION
  • H03G3/00—Gain control in amplifiers or frequency changers
  • H03G3/20—Automatic control
  • H03G3/30—Automatic control in amplifiers having semiconductor devices
  • H03G3/34—Muting amplifier when no signal is present
  • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
  • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
  • A61B5/7217—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise originating from a therapeutic or surgical apparatus, e.g. from a pacemaker
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
  • A61B5/7235—Details of waveform analysis
  • A61B5/7239—Details of waveform analysis using differentiation including higher order derivatives

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Molecular Biology (AREA)
• General Health & Medical Sciences (AREA)
• Biophysics (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Medical Informatics (AREA)
• Cardiology (AREA)
• Surgery (AREA)
• Animal Behavior & Ethology (AREA)
• Pathology (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Power Engineering (AREA)
• General Physics & Mathematics (AREA)
• Electrotherapy Devices (AREA)
• Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
• Noise Elimination (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5856829

Family Applications (1)

Country Status (5)

Families Citing this family (5)

• 1972
  • 1972-09-20 DE DE2246100A patent/DE2246100C3/de not_active Expired
• 1973
  • 1973-09-07 NL NL7312380A patent/NL7312380A/xx not_active Application Discontinuation
  • 1973-09-18 SE SE7312702A patent/SE395772B/xx unknown
  • 1973-09-19 FR FR7333579A patent/FR2200526B1/fr not_active Expired
  • 1973-09-20 GB GB4429273A patent/GB1450081A/en not_active Expired

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