Surgery – Diagnostic testing – Sensitivity to vibration
Patent
1997-08-11
1999-03-09
O'Connor, Carey E.
Surgery
Diagnostic testing
Sensitivity to vibration
600595, A01B 500
Patent
active
058793097
ABSTRACT:
A motion detection device for monitoring patient movement. The device includes a sensor adapted to generate a voltage from mechanical vibrations and a circuit in operable relationship with the voltage for generating an alarm upon detection of a predetermined signal. The circuit provides a fixed impedance to the sensor. A micro controller is used for analyzing the signal to select from first and second conditions by sensing activity within sequences of preselected time intervals. The first condition represents a medical condition and the second condition represents casual motion. A switch is used for setting a time interval and a total sampling time for the micro controller. An alarm signal generates an alarm upon detection by the microprocessor of a predetermined activity. The preferred sensor comprises a housing having an outer shell and a hollow spherical opening therein. A plurality of inner spherical bodies are adapted to move freely inside the spherical opening to produce detectable mechanical vibration in the outer shell. A piezoelectric film is attached to a portion of the outer shell to generate a voltage from the mechanical vibrations.
REFERENCES:
patent: 5008654 (1991-04-01), Callaway
patent: 5146206 (1992-09-01), Callaway
patent: 5247939 (1993-09-01), Sioquist et al.
Cote Paul J.
Johnson Mark A.
Moran John F.
O'Connor Carey E.
Sachs Michael C.
Wingood Pamela L.
LandOfFree
Personal motion event monitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Personal motion event monitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Personal motion event monitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1315400