Title :
Implantable Blood Pressure Telemetry System
Author :
Casadei, Freddy W. ; Gerold, Marcel ; Baldinger, Ernst
Author_Institution :
Institute of Applied Physics, University of Basel, Basel, Switzerland.
Abstract :
A telemetry system for long-term monitoring of the blood pressure of unrestrained animals is described. The wholly implantable transmitter is equipped with a pressure transducer suitable for chronic intravascular use. To achieve high performance and long battery life, a greater number of components were used than in conventional implantable devices. Pulse interval modulation is used with a mean sampling rate significantly higher than twice the maximum signal frequency. Together with a controlled pulse window in the receiver, an effective reduction of ignition spark interferences with the weak transmitted signal could therewith be achieved.
Keywords :
Animals; Batteries; Biomedical monitoring; Blood pressure; Frequency; Pulse modulation; Sampling methods; Telemetry; Transducers; Transmitters; Animals; Blood Pressure Determination; Dogs; Methods; Radio; Telemetry; Transducers;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1972.324136
