Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
  • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
  • G01N33/483—Physical analysis of biological material
  • G01N33/4833—Physical analysis of biological material of solid biological material, e.g. tissue samples, cell cultures
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
  • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
  • A61B5/4504—Bones
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
  • A61B5/4504—Bones
  • A61B5/4509—Bone density determination
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
  • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
  • A61B5/6813—Specially adapted to be attached to a specific body part
  • A61B5/6824—Arm or wrist
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
  • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance

Definitions

• the step of measuring a potential difference resulting from the screening current may comprise measuring the potential between the screening current injection electrodes or between a separate pair of probe electrodes forming part of the bio-impedance measurement system.
• a control circuit for electrodes in a bio-impedance measurement system comprising screening current injecting electrodes and measuring current injecting electrodes, the control circuit comprising:
• Figure 6 shows the connection of electrodes to the control circuit of Figure 3 in accordance with a third configuration
• FIG. 3 illustrates one example of a control circuit 10 in accordance with the present invention.
• the control circuit comprises a screening current generator 30, consisting of the digital voltage generator 34 driving a current source which consists of the differential amplifier 31 and the separation amplifier 32.
• the screening current l e which depends on the values of the voltage from the voltage generator 34 and the precision resistor 36, is output to the pin F of the measurement socket 40.
• the electrodes are each separable from the sockets of the control circuit, it should be clear that it is possible to have one or all of the electrodes fixed to the control circuit.
• the measuring current injecting electrode 1 may be electrically fixed to the output of the control circuit 10, connected to the pin C of the measurement socket 40.
• At least one electrode may be integrated with the apparatus casing.

Landscapes

• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Biomedical Technology (AREA)
• Pathology (AREA)
• General Health & Medical Sciences (AREA)
• Biophysics (AREA)
• Molecular Biology (AREA)
• Veterinary Medicine (AREA)
• Surgery (AREA)
• Medical Informatics (AREA)
• Heart & Thoracic Surgery (AREA)
• Animal Behavior & Ethology (AREA)
• Public Health (AREA)
• Chemical & Material Sciences (AREA)
• General Physics & Mathematics (AREA)
• Immunology (AREA)
• Biochemistry (AREA)
• Analytical Chemistry (AREA)
• Dentistry (AREA)
• Rheumatology (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Orthopedic Medicine & Surgery (AREA)
• Food Science & Technology (AREA)
• Medicinal Chemistry (AREA)
• Urology & Nephrology (AREA)
• Hematology (AREA)
• Optics & Photonics (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Radiology & Medical Imaging (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

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ID=46052831

Family Applications (1)

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Citations (4)

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• 2012
  • 2012-02-29 PL PL398277A patent/PL398277A1/pl unknown
  • 2012-03-29 US US14/382,267 patent/US10041929B2/en not_active Expired - Fee Related
  • 2012-03-29 WO PCT/IB2012/051529 patent/WO2013128243A1/en not_active Ceased
  • 2012-03-29 EP EP12720279.4A patent/EP2819576B1/en active Active
  • 2012-03-29 KR KR1020147025644A patent/KR101968375B1/ko not_active Expired - Fee Related
  • 2012-03-29 AU AU2012372049A patent/AU2012372049B2/en not_active Ceased
  • 2012-03-29 CA CA2866014A patent/CA2866014A1/en not_active Abandoned
  • 2012-03-29 IN IN7955DEN2014 patent/IN2014DN07955A/en unknown

Patent Citations (4)

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