WO2002100247A3 - Non-invasive method and apparatus for tissue detection - Google Patents

Non-invasive method and apparatus for tissue detection Download PDF

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Publication number
WO2002100247A3
WO2002100247A3 PCT/US2002/018649 US0218649W WO02100247A3 WO 2002100247 A3 WO2002100247 A3 WO 2002100247A3 US 0218649 W US0218649 W US 0218649W WO 02100247 A3 WO02100247 A3 WO 02100247A3
Authority
WO
WIPO (PCT)
Prior art keywords
waveform
apply
sampling
impedance
electrode
Prior art date
Application number
PCT/US2002/018649
Other languages
French (fr)
Other versions
WO2002100247A2 (en
Inventor
Philip C Cory
Joan M Cory
Original Assignee
Ckm Diagnostics Inc
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 Ckm Diagnostics Inc filed Critical Ckm Diagnostics Inc
Priority to CA002449567A priority Critical patent/CA2449567A1/en
Priority to EP02739850A priority patent/EP1401332A4/en
Priority to JP2003503077A priority patent/JP2004528935A/en
Publication of WO2002100247A2 publication Critical patent/WO2002100247A2/en
Publication of WO2002100247A3 publication Critical patent/WO2002100247A3/en

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Classifications

    • 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 
    • 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
    • A61B5/0536—Impedance imaging, e.g. by tomography

Abstract

An apparatus and method for non-invasively determining tissue structure by applying a periodic waveform to an external or internal body part. A microprocessor (16) provides instruction to a waveform generator (8) to generate a plurality of different periodic waveforms to at least one sampling electrode (12) electrically connected to at least on return electrode (14) through the tissue structure. The impedance of the tissue structures are selectively determined for each generated waveform. After determining a plurality of impedance measurements various calculations are performed, including determining a ratio of impedance change and the applied current change. The apparatus may apply the same waveform to all sampling electrodes (12) simultaneously, or apply the waveform to a few as one sampling electrode (12) at a time. The apparatus may also simultaneously apply a plurality of waveforms to a plurality of electrodes to maintain the same current waveform on each sampling electrode (12).
PCT/US2002/018649 2001-06-13 2002-06-13 Non-invasive method and apparatus for tissue detection WO2002100247A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002449567A CA2449567A1 (en) 2001-06-13 2002-06-13 Non-invasive method and apparatus for tissue detection
EP02739850A EP1401332A4 (en) 2001-06-13 2002-06-13 Non-invasive method and apparatus for tissue detection
JP2003503077A JP2004528935A (en) 2001-06-13 2002-06-13 Non-invasive detection method and detection device for tissue

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29769401P 2001-06-13 2001-06-13
US60/297,694 2001-06-13

Publications (2)

Publication Number Publication Date
WO2002100247A2 WO2002100247A2 (en) 2002-12-19
WO2002100247A3 true WO2002100247A3 (en) 2003-11-27

Family

ID=23147353

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/018649 WO2002100247A2 (en) 2001-06-13 2002-06-13 Non-invasive method and apparatus for tissue detection

Country Status (5)

Country Link
US (1) US20030009111A1 (en)
EP (1) EP1401332A4 (en)
JP (1) JP2004528935A (en)
CA (1) CA2449567A1 (en)
WO (1) WO2002100247A2 (en)

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Also Published As

Publication number Publication date
WO2002100247A2 (en) 2002-12-19
US20030009111A1 (en) 2003-01-09
JP2004528935A (en) 2004-09-24
CA2449567A1 (en) 2002-12-19
EP1401332A4 (en) 2007-06-20
EP1401332A2 (en) 2004-03-31

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