Title :
An implantable telemetry system powered by a capacitor having high capacitance
Author :
Maki, Hiromichi ; Yonezawa, Yoshiharu ; Harada, Eiichi ; Ninomiya, Ishio
Author_Institution :
Dept. of Electron. Eng., Hiroshima Inst. of Technol., Japan
fDate :
29 Oct-1 Nov 1998
Abstract :
An implantable telemetry system, using a capacitor having high capacitance instead of the rechargeable batteries, has been designed for chronic unanaesthetized animal studies. This system can simultaneously record the cardiac sympathetic nerve activity and ECG. The power of the system is inductively coupled and transmitted to a 2.5 farad capacitor. The system, which is constructed by ultralow power analog and digital standard integrated circuits, has a transmission range up to 5 m, depending on intervening tissue depth and FM receiver characteristics. With the capacitor charging time of 5 minutes, the system can be driven for 120 minutes
Keywords :
biomedical telemetry; electrocardiography; patient monitoring; power capacitors; prosthetic power supplies; 2.5 F; ECG; FM receiver characteristics; capacitor charging time; capacitor powered; cardiac sympathetic nerve activity; cardiovascular neural control; digital standard integrated circuits; high capacitance; implantable telemetry system; inductively coupled power; intervening tissue depth; microcontroller; ultralow power analog IC; unanaesthetized animal studies; Batteries; Capacitance; Capacitors; Coils; Gain control; Low-noise amplifiers; Potentiometers; Switches; Switching circuits; Telemetry;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.746980
