Medical patient condition monitoring system
First Claim
1. A medical patient condition monitoring system comprising:
- (a) a portable battery-powerable transmitter module including;
(i) medical electrode means coupleable to the human anatomy for receiving electrical signals generated thereby;
(ii) battery means for providing power from a battery source to power said transmitter module;
(iii) a pulse position modulator circuit coupled to said medical electrodes, said pulse position modulator circuit includes timing means for generating pulses controllably positioned in time from a reference frequency in dependence upon the input signal generated by said medical electrode means; and
(iv) an infrared light-emitting device coupled to said pulse position modulator circuit for receiving pulses generated thereby, said light-emitting device generating infrared energy bursts in synchronism with the pulses generated by said modulator circuit; and
(b) a receiver module including;
(i) an infrared photodetector device for altering an electrical signal in accordance with received bursts of infrared energy generated by said light-emitting device to provide an electrical signal pulsed in synchronism with said bursts of infrared energy;
(ii) a demodulator circuit coupled to said photodetector device for generating an output signal indicative of the deviation of the pulses of said electrical signal from said reference frequency, said output signal corresponding to the electrical signal generated by said medical electrode means; and
(iii) monitoring means coupled to said modulator circuit, said monitoring means being responsive to said output signal for monitoring and/or displaying the patient'"'"'s condition.
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Accused Products
Abstract
A medical patient condition monitoring system includes a portable battery-operable transmitter module which transmits monitored conditions of the patient via infrared energy to the receiver input stage of a medical monitoring and display unit. In one embodiment, the transmitter module which may be worn on the patient'"'"'s person includes medical electrodes which are coupled to the patient'"'"'s skin to receive electrical signals generated by the patient'"'"'s anatomy. A voltage-controlled pulse position modulator circuit is coupled to the medical electrodes for generating pulses controllably positioned in time from a reference frequency in dependence upon the amplitude of the signal generated by the medical electrodes. An infrared light-emitting device is coupled to the output of the pulse position modulator circuit for generating infrared energy bursts in synchronism with the pulses generated by the modulator circuit. A receiver module having an infrared photodetector device located in the patient'"'"'s room receives the infrared energy, and provides an electrical signal pulsed in synchronism with the bursts of infrared energy. A demodulator circuit coupled to the photodetector device generates an output signal which corresponds to the electrical signals received via the medical electrodes. This output signal is coupled to the monitoring and/or display unit for monitoring the patient'"'"'s condition.
299 Citations
17 Claims
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1. A medical patient condition monitoring system comprising:
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(a) a portable battery-powerable transmitter module including; (i) medical electrode means coupleable to the human anatomy for receiving electrical signals generated thereby; (ii) battery means for providing power from a battery source to power said transmitter module; (iii) a pulse position modulator circuit coupled to said medical electrodes, said pulse position modulator circuit includes timing means for generating pulses controllably positioned in time from a reference frequency in dependence upon the input signal generated by said medical electrode means; and (iv) an infrared light-emitting device coupled to said pulse position modulator circuit for receiving pulses generated thereby, said light-emitting device generating infrared energy bursts in synchronism with the pulses generated by said modulator circuit; and (b) a receiver module including; (i) an infrared photodetector device for altering an electrical signal in accordance with received bursts of infrared energy generated by said light-emitting device to provide an electrical signal pulsed in synchronism with said bursts of infrared energy; (ii) a demodulator circuit coupled to said photodetector device for generating an output signal indicative of the deviation of the pulses of said electrical signal from said reference frequency, said output signal corresponding to the electrical signal generated by said medical electrode means; and (iii) monitoring means coupled to said modulator circuit, said monitoring means being responsive to said output signal for monitoring and/or displaying the patient'"'"'s condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification