Abstract: A generic implantable puck that can be used with a number of biosensor configurations. This generic implantable potentiostat telemetry unit (the puck) can also be part of a system to detect glucose concentrations. An electrochemical system partially implantable into a body for detecting glucose concentrations therein is presented. The system comprises an electrochemical sensor, a transmitting puck including an electric circuit connected to the electrochemical sensor for transmitting a signal indicative of the glucose concentrations in the body. There is at least one receiver for receiving the signal from the transmitting puck and a computer system coupled tlo the at least one receiver for processing the signal for patient diagnosis and treatment.

Abstract: A motion sensor for monitoring the activity of a body in motion includes a pair of force detecting sensors capable of detecting both magnitude and direction of an applied force. These sensors are configured to enable translational or rotational motion resulting from travel in a vehicle to be suppressed from any general motion signal leaving only a rotational or translational component. The active compensation of an electrical circuit is provided to aid in the calibration of a non-ideal sensor pair and reduce the leakage of translational motion into rotational motion or rotational motion into translational motion due to any differences between the pair.

Abstract: A comparator for comparing the operation of activity monitors of the type having internal sensors responsive to excitation forces in order to record the activity of a wearer, includes a housing having a test platform and a monitor-receiving test fixture for holding an activity monitor motionless during testing. The comparator further includes an electromagnet for applying an excitation force to the monitor, by converting a prerecorded digital signal, or waveform, into analog voltage signals which are applied to the electromagnet for testing the monitor. The monitor may be subjected to a variety of test patterns of activity.

Abstract: An activity monitor adapted to be worn on the non-dominant wrist of a subject includes a bimorphous beam motion sensor. The output signal of the sensor is amplified in an amplifier circuit having a selectable amplification factor, and filtered by highpass and lowpass filter circuits having individually selectable cut-off frequencies to obtain an analog signal for processing having a bandpass and amplitude characteristic corresponding to a particular body activity under observation. A control and processing circuit within the monitor includes a microprocessor which responds to either resident internal operating instructions or to externally supplied operating instructions, or to designated data signal parameters, to provide configuration control signals to the amplifier and filter circuits, and processing of the collected data, appropriate to the particular activity being monitored.

Abstract: An activity monitor adapted to be worn on the non-dominant wrist of a subject includes a bimorphous beam motion sensor. The output signal of the sensor is amplified in an amplifier circuit having a selectable amplification factor, and filtered by highpass and lowpass filter circuits having individually selectable cut-off frequencies to obtain an analog signal for processing having a bandpass and amplitude characteristic corresponding to a particular body activity under observation. A control and processing circuit within the monitor includes a microprocessor which responds to either resident internal operating instructions or to externally supplied operating instructions, or to designated data signal parameters, to provide configuration control signals to the amplifier and filter circuits, and processing of the collected data, appropriate to the particular activity being monitored.