Development of an implantable motor-driven assist pump system
- 1 January 1990
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 37 (2), 146-156
- https://doi.org/10.1109/10.46254
Abstract
A motor-driven artificial pump and its transcutaneous energy transmission (TET) system have been developed. The artificial pump consists of a high-speed dc brushless motor driving a ball screw and magnetic coupling mechanism between the blood pump and ball screw. The ball screw transfers high-speed rotary motion into low-speed rectilinear motion by a single component. Magnetic coupling enables active blood filling without applying an excess negative pressure to the pump. The transcutaneous transformer is formed from a pair of concave/convex ferrite cores. This design minimizes lateral motion of the external core. Information on motor voltage is transmitted through the skin by infrared pulses. The motor voltage is regulated by controlling the duty ratio of the square pulse supplied to the primary coil. Pump flow of 5.6 l/min was obtained with a mean outlet pressure of 100 mmHg at a drive rate of 100 bpm under preload of 15 mmHg. The performance of synchronous pumping has been very satisfactory. Continuous pumping was maintained by the backup battery in the case of interruption of TET. 24 W were transmitted by TET system with 78 percent of efficiency. Temperature rise of the internal core was 0.2 C. The developed system is promising as an implantable assist pump system.Keywords
This publication has 8 references indexed in Scilit:
- Percutaneous Access Devices in Calves Receiving an Artificial HeartArtificial Organs, 1988
- The Novacor heart assist system: Development, testing and initial clinical evaluationPublished by Springer Science and Business Media LLC ,1988
- Linear electromagnetic actuators for implantable artificial heartPublished by Springer Science and Business Media LLC ,1988
- Development of transcutaneous energy transmission system for totally implantable artificial heartPublished by Springer Science and Business Media LLC ,1988
- A Totally Implantable Ventricular Assist Device for End-Stage Heart DiseasePublished by Springer Science and Business Media LLC ,1984
- An Inductively Coupled RF System for the Transmission of 1 kW of Power Through the SkinIEEE Transactions on Biomedical Engineering, 1971
- The Skin Tunnel Transformer: A New System that Permits Both High Efficiency Transfer of Power and Telemetry of Data Through the Intact SkinIEEE Transactions on Biomedical Engineering, 1968
- Apparatus for Efficient Power Transfer Through a Tissue BarrierIEEE Transactions on Biomedical Engineering, 1968