Patient ambulation motion detector
Patent 5008654 Issued on April 16, 1991. Estimated Expiration Date: 
November 7, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 7, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesApparatus for detecting unauthorized egress by patient from position of confinement Patent #: 4536755 InventorApplicationNo. 432867 filed on 11/07/1989US Classes:340/573.1, Human or animal340/573.7, Posture alarm600/595Body movement (e.g., head or hand tremor, motility of limb, etc.)ExaminersPrimary: Eisenzopf, Reinhard J.Assistant: Sutcliffe, Geoff Attorney, Agent or FirmInternational ClassG08B 021/00AbstractA patient ambulation motion detector is intended for attachment to a lateral generally vertical surface of a patient'body. The detector includes a motion sensor switch and a detachment detector switch which are mounted on a circuit board, the circuit board being in turn enclosed within an attachment casing which is attachable to a lateral surface of the patient's body. The motion sensor switch is a mercury switch mounted to the circuit board and having the axis of movement of the mercury contained therein oriented generally parallel to the circuit board so as to be responsive to declination of that portion of the patient's body to which the detector is attached and which declination is indicative of impending ambulation. The detachment detector switch is a spring contact switch which is openable and closable by a plunger acting thereon and sensitive to detachment of the detector from the patient's body. The detector may be wired to a conventional switched nurse call system. | |
