초록 ▼

A wireless patient monitoring apparatus uses low frequency inductive coupling to couple signals from a transducer to monitoring and analysis instrumentation. Signals indicative of physiological functions are modulated onto a low frequency carrier and output from a self-contained portable transducer

A wireless patient monitoring apparatus uses low frequency inductive coupling to couple signals from a transducer to monitoring and analysis instrumentation. Signals indicative of physiological functions are modulated onto a low frequency carrier and output from a self-contained portable transducer assembly via a transducer coil. A corresponding receiver coil receives the signals by electromagnetic induction. The received signals are demodulated and processed by instrumentation coupled to the receiver coil. A mattress pad containing the receiver coil is also disclosed. In a fetal monitor implementation, both wireless ultrasound and tocodynamometer transducers are provided.

대표청구항 ▼

[ We claim:] [1.] Wireless patient monitoring apparatus comprising:a transducer configured to detect a physiological function and to provide an output signal indicative of the physiological function;a modulator configured to modulate a carrier having a frequency at or below 10 kHz by the output sign

[ We claim:] [1.] Wireless patient monitoring apparatus comprising:a transducer configured to detect a physiological function and to provide an output signal indicative of the physiological function;a modulator configured to modulate a carrier having a frequency at or below 10 kHz by the output signal;a transducer coil associated with said modulator for coupling the modulated carrier to a corresponding receiver coil by electromagnetic induction; anda monitoring circuit coupled to receive the modulated carrier from the receiver coil;wherein said transducer is designed for placement adjacent to a region of a patient to be monitored and provides the output signal to said monitoring circuit when the patient is in proximity to the receiver coil.