Transcutaneous DC-DC converter for totally implantable artificial heart using synchronous rectifier

Author

Matsuki, Hidetoshi ; Yamakata, Y. ; Chubachi, Noriyoshi ; Nitta, Shin-ichi ; Hashimoto, Hiroya

Author_Institution

Graduate Sch. of Eng., Tohoku Univ., Sendai, Japan

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

5118

Lastpage

5120

Abstract

To drive a totally implantable artificial heart for a long period with transcutaneous energy transmission, it is necessary that the temperature rise of devices implanted inside the human body is minimized. In this paper we study the properties of a transcutaneous DC-DC converter which transfers energy from an external source to a vibrating flow pump within the body, The temperature rise of the internal rectifying circuit has been rectified by as much as 30% to 50% by employing synchronous rectifiers rather than Schottky diodes, In addition, we have investigated a method for controlling the vibrating flow pump (VFP). This pump would be a constituent part of a totally implantable artificial heart. Also, the use and current limitation of an implanted rechargeable battery for emergency use is discussed

Keywords

DC-DC power convertors; artificial organs; biocontrol; cardiology; flow control; prosthetic power supplies; rectifying circuits; secondary cells; uninterruptible power supplies; Li; Li ion battery; emergency use; external source; human body; implanted rechargeable battery; internal rectifying circuit; long period; synchronous rectifier; temperature rise; totally implantable artificial heart; transcutaneous DC-DC converter; transcutaneous energy transmission; vibrating flow pump; Artificial heart; DC-DC power converters; Diodes; Humans; Rectifiers; Rectifying circuits; Skin; Switching circuits; Temperature; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539509

Filename

539509