Non-contact vital signs monitor
Patent 4958638 Issued on September 25, 1990. Estimated Expiration Date: 
June 30, 2008. 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.
June 30, 2008. 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 References 3483860 Apparatus and method for remotely monitoring and altering brain waves Method for measuring physiological parameter Apparatus and method for measuring lung water content Circuit for separating one type signal component from another Patent #: 4638808 InventorsAssigneeApplicationNo. 213783 filed on 06/30/1988US Classes:600/407, Detecting nuclear, electromagnetic, or ultrasonic radiation600/430, With microwave carrier signal600/484, Detecting respiratory condition600/534Detecting body movement attending breathingExaminersPrimary: Howell, Kyle L.Assistant: Pfaffle, K. M. Attorney, Agent or FirmInternational ClassesA61B 005/02A61B 005/08 AbstractAn apparatus for measuring simultaneous physiological parameters such as heart rate and respiration without physically connecting electrodes or other sensors to the body. A beam of frequency modulated continuous wave radio frequency energy is directed towards the body of a subject. The reflected signal contains phase information representing the movement of the surface of the body, from which respiration and heartbeat information can be obtained. The reflected phase modulated energy is received and demodulated by the apparatus using synchronous quadrature detection. The quadrature signals so obtained are then signal processed to obtain the heartbeat and respiratory information of interest. | |
