Title :
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
fDate :
9/1/1996 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
