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

Volume

4

fYear

1998

fDate

29 Oct-1 Nov 1998

Firstpage

1943

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE

Conference_Location

Hong Kong

ISSN

1094-687X

Print_ISBN

0-7803-5164-9

Type

conf

DOI

10.1109/IEMBS.1998.746980

Filename

746980