title: Preliminary validation of a new magnetic wireless blood pump.
abstract: In general, a blood pump must be small, have a simple configuration, and have sufficient hydrodynamic performance. Herein, we introduce new mechanisms for a wireless blood pump that is small and simple and provides wireless and battery-free operation. To achieve wireless and battery-free operation, we implement magnetic torque and force control methods that use two external drivers: an external coil and a permanent magnet with a DC-motor, respectively. Power harvesting can be used to drive an electronic circuit for wireless monitoring (the observation of the pump conditions and temperature) without the use of an internal battery. The power harvesting will be used as a power source to drive other electronic devices, such as various biosensors with their driving circuits. To have both a compact size and sufficient pumping capability, the fully magnetic impeller has five stages and each stage includes four backward-curved blades. The pump has total and inner volumes of 20 and 9.8 cc, respectively, and weighs 52 g. The pump produces a flow rate of approximately 8 L/min at 80 mm Hg and the power generator produces 0.3 W of electrical power at 120 Ω. The pump also produces a minimum flow rate of 1.5 L/min and a pressure of 30 mm Hg for circulation at a maximum distance of 7.5 cm.
authors: Research Institute of Electrical Communication, Tohoku University, Sendai, Japan.
authors: Sung Hoon
authors: SH
authors: Kim
authors: Kazushi
authors: K
authors: Ishiyama
authors: Shuichiro
authors: S
authors: Hashi
authors: Yasuyuki
authors: Y
authors: Shiraishi
authors: Yukihiro
authors: Y
authors: Hayatsu
authors: Masatoshi
authors: M
authors: Akiyama
authors: Yoshikatsu
authors: Y
authors: Saiki
authors: Tomoyuki
authors: T
authors: Yambe
mesh_terms: D000818:Animals; D011211:Electric Power Supplies; D006353:Heart-Assist Devices; D006801:Humans; D057446:Hydrodynamics; D060328:Magnetic Phenomena; D011474:Prosthesis Design; D059015:Wireless Technology
keywords: Centrifugal pump; Implantable device; Magnetic torque and force control; Power harvesting; Wireless blood pump