CA2264805A1 - Device for monitoring the presence of a person using proximity induced dielectric shift sensing - Google Patents

Device for monitoring the presence of a person using proximity induced dielectric shift sensing

Info

Publication number
CA2264805A1
CA2264805A1 CA002264805A CA2264805A CA2264805A1 CA 2264805 A1 CA2264805 A1 CA 2264805A1 CA 002264805 A CA002264805 A CA 002264805A CA 2264805 A CA2264805 A CA 2264805A CA 2264805 A1 CA2264805 A1 CA 2264805A1
Authority
CA
Canada
Prior art keywords
circuit
control module
array
monitoring
person
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.)
Granted
Application number
CA002264805A
Other languages
French (fr)
Other versions
CA2264805C (en
Inventor
Paul Newham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2264805A1 publication Critical patent/CA2264805A1/en
Application granted granted Critical
Publication of CA2264805C publication Critical patent/CA2264805C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1113—Local tracking of patients, e.g. in a hospital or private home
    • A61B5/1115—Monitoring leaving of a patient support, e.g. a bed or a wheelchair
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/22—Status alarms responsive to presence or absence of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
    • A61B2562/0214—Capacitive electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/22—Arrangements of medical sensors with cables or leads; Connectors or couplings specifically adapted for medical sensors
    • A61B2562/225—Connectors or couplings
    • A61B2562/227—Sensors with electrical connectors
    • 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
    • A61B5/683—Means for maintaining contact with the body
    • A61B5/6838—Clamps or clips
    • 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
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6892—Mats
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/90—Identification means for patients or instruments, e.g. tags

Abstract

A capacitive array (26) is housed within a polyester mat or other appropriate nonconductive substrate material (28) and interconnected with a control module (10). The control module (10) supplies to the capacitive array (26) a suitable oscillator driver current and concurrently senses capacitance value changes within the capacitive array (26) induced through dielectric shifts within the array (26) brought about by the proximity or absence thereof of the patient's body mass. The control module (10) includes a power supply (16), a driver/sensor circuit (18), a calibration/comparator logic circuit (20), a system interconnection integrity circuit (24), and an alarm generation circuit (22).
It may also optionally contain a nurse call relay circuit (32) for interconnection to a facility's nurse call system (34).
CA 2264805 1996-09-04 1997-09-04 Device for monitoring the presence of a person using proximity induced dielectric shift sensing Expired - Fee Related CA2264805C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US70839796A 1996-09-04 1996-09-04
US08/708,397 1996-09-04
US08/871,363 1997-06-09
US08/871,363 US6025782A (en) 1996-09-04 1997-06-09 Device for monitoring the presence of a person using proximity induced dielectric shift sensing
PCT/US1997/015495 WO1998010391A1 (en) 1996-09-04 1997-09-04 Device for monitoring the presence of a person using proximity induced dielectric shift sensing

Publications (2)

Publication Number Publication Date
CA2264805A1 true CA2264805A1 (en) 1998-03-12
CA2264805C CA2264805C (en) 2008-01-22

Family

ID=27108075

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2264805 Expired - Fee Related CA2264805C (en) 1996-09-04 1997-09-04 Device for monitoring the presence of a person using proximity induced dielectric shift sensing

Country Status (5)

Country Link
US (2) US6025782A (en)
AU (1) AU4410197A (en)
CA (1) CA2264805C (en)
GB (1) GB2332063B (en)
WO (1) WO1998010391A1 (en)

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Also Published As

Publication number Publication date
US6025782A (en) 2000-02-15
GB2332063A (en) 1999-06-09
GB9904954D0 (en) 1999-04-28
US6297738B1 (en) 2001-10-02
AU4410197A (en) 1998-03-26
GB2332063B (en) 2000-11-01
WO1998010391A1 (en) 1998-03-12
CA2264805C (en) 2008-01-22

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Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130904