CA2260577A1 - Tag and system for patient safety monitoring - Google Patents

Tag and system for patient safety monitoring Download PDF

Info

Publication number
CA2260577A1
CA2260577A1 CA 2260577 CA2260577A CA2260577A1 CA 2260577 A1 CA2260577 A1 CA 2260577A1 CA 2260577 CA2260577 CA 2260577 CA 2260577 A CA2260577 A CA 2260577A CA 2260577 A1 CA2260577 A1 CA 2260577A1
Authority
CA
Canada
Prior art keywords
tag
patient
electrodes
circuit
alarm
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
CA 2260577
Other languages
French (fr)
Other versions
CA2260577C (en
Inventor
Vladimir Federman
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.)
Xmark Corp
Original Assignee
eXI Wireless Systems 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 eXI Wireless Systems Inc filed Critical eXI Wireless Systems Inc
Priority to CA 2260577 priority Critical patent/CA2260577C/en
Publication of CA2260577A1 publication Critical patent/CA2260577A1/en
Application granted granted Critical
Publication of CA2260577C publication Critical patent/CA2260577C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V15/00—Tags attached to, or associated with, an object, in order to enable detection of the object
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The tag includes: a tag for monitoring the security of a patient, the tag comprising, a housing having a wall, the wall having an inner surface and an outer surface, an electronic circuit located in the housing, the electronic circuit including an alarm circuit, including a capacitance measuring circuit, the capacitance measuring circuit having first and second electrodes, the first and second electrodes located adjacent the inner surface and in spaced relation from one another to form a capacitor, the alarm circuit having means for generating an alarm signal upon the capacitance measuring circuit detecting a level of capacitance corresponding to an alarm condition, whereby the outer surface of the housing is placed in contact with the patient, with the first and second electrodes capacitively coupled to the patient, but without the first and second electrodes in physical contact with the patient, the capacitance measuring circuit detects an alarm condition when the patient is no longer in contact with the outer surface of the tag.
CA 2260577 1999-02-01 1999-02-01 Tag and system for patient safety monitoring Expired - Lifetime CA2260577C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2260577 CA2260577C (en) 1999-02-01 1999-02-01 Tag and system for patient safety monitoring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2260577 CA2260577C (en) 1999-02-01 1999-02-01 Tag and system for patient safety monitoring

Publications (2)

Publication Number Publication Date
CA2260577A1 true CA2260577A1 (en) 2000-08-01
CA2260577C CA2260577C (en) 2002-07-23

Family

ID=4163244

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2260577 Expired - Lifetime CA2260577C (en) 1999-02-01 1999-02-01 Tag and system for patient safety monitoring

Country Status (1)

Country Link
CA (1) CA2260577C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005025278A1 (en) * 2003-09-04 2005-03-17 Vernon George Houle A method of controlling movement on the inside and around the outside of a facility

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005025278A1 (en) * 2003-09-04 2005-03-17 Vernon George Houle A method of controlling movement on the inside and around the outside of a facility

Also Published As

Publication number Publication date
CA2260577C (en) 2002-07-23

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20190201