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1. WO2003009752 - ELECTROMAGNETIC SENSORS FOR BIOLOGICAL TISSUE APPLICATIONS

Publication Number WO/2003/009752
Publication Date 06.02.2003
International Application No. PCT/US2002/023877
International Filing Date 26.07.2002
IPC
A61B 5/053 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
05Measuring for diagnosis by means of electric currents or magnetic fields
053Measuring electrical impedance or conductance of a portion of the body
A61M 5/168 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
168Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters
H01Q 1/40 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
40Radiating elements coated with, or embedded in, protective material
H01Q 9/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
9Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
04Resonant antennas
H01Q 13/18 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
13Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
10Resonant slot antennas
18the slot being backed by, or formed in boundary wall of, a resonant cavity
CPC
A61B 2562/02
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2562Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
02Details of sensors specially adapted for in-vivo measurements
A61B 2562/046
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2562Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
04Arrangements of multiple sensors of the same type
046in a matrix array
A61B 2562/143
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2562Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
14Coupling media or elements to improve sensor contact with skin or tissue
143for coupling microwaves
A61B 5/05
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
A61B 5/0507
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
0507using microwaves or terahertz waves
A61B 5/0537
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
05Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
053Measuring electrical impedance or conductance of a portion of the body
0537Measuring body composition by impedance, e.g. tissue hydration or fat content
Applicants
  • BOUTON, Chad, Edward [US]/[US]
Inventors
  • BOUTON, Chad, Edward
Agents
  • STEVENS, Richard, C.
Priority Data
60/308,01226.07.2001US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTROMAGNETIC SENSORS FOR BIOLOGICAL TISSUE APPLICATIONS
(FR) CAPTEURS ELECTROMAGNETIQUES DESTINES A DES APPLICATIONS SUR DES TISSUS BIOLOGIQUES ET TECHNIQUES D'UTILISATION
Abstract
(EN)
Tissue sensors house one or more sensor elements. Each element has a housing mounted substrate and a superstrate with a planar antenna between. A transitional periphery (TP) of a superstrate outer surface interconnects a base to a plateau. At least some of the TP has a generally smooth transition. Plural elements are spaced by the housing. Alternately, the superstrate TP is flat, the housing extends to the outer superstrate surface and a shield surrounds the element. The housing is flush with or recessed below the superstrate and defines a TP between the housing and superstrate. A method converts a reference signal to complex form; plots it in a complex plane as a reference point (RP); converts a measurement signal to complex form; plots it in the complex plane as a measurement point (MP); determine a complex distance between the MP and the RP; and compares complex distance to a threshold.
(FR)
Des capteurs de tissus abritent un ou plusieurs éléments capteur. Chaque élément possède un substrat monté dans un boîtier et une superstrate avec une antenne planar placée entre ce substrat et cette superstrate. Une périphérie de transition (TP) d'une surface extérieure de la superstrate interconnecte une base à un plateau. Au moins une partie de cette périphérie de transition possède une transition généralement lisse. Plusieurs éléments sont espacés dans le boîtier. Dans un mode de réalisation de l'invention, la TP de superstrate est plate, le boîtier se prolonge sur la surface de la superstrate extérieure et un blindage entoure l'élément. Le boîtier est à niveau avec la superstrate ou décalé en dessous de la superstrate et il définit une TP entre lui et cette superstrate. Une technique transforme un signal de référence en une forme complexe, le représente dans un plan complexe sous forme de point de référence (RP), transforme un signal de mesure en forme complexe, le représente dans le plan complexe sous forme de point de mesure (MP), détermine une distance complexe entre le MP et le RP et compare la distance complexe à un seuil.
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