Abstract:
PROBLEM TO BE SOLVED: To provide a pump which can operate delicate movement fluid such as blood, is efficient in hydraulic pressure and has preferably efficient power.SOLUTION: A blood pump includes: a pump housing 110 which regulates a pump chamber 112 having an inlet port 114 and an outlet port 116; a rotor 120 arranged within the pump housing 110; and an axial magnetic bearing 180 which is arranged within the pump chamber 112 and at least partially supports the rotor 120. Therein, the axial magnetic bearing 180 includes a first magnet, the first magnet is turned into such a shape that the mass center of the first magnet shifts from a shaft 190 of the axial magnetic bearing 180 and the first magnet generates a magnetic force in a specified radial direction.
Abstract:
A system for pumping or mixing a fluid using a levitating, rotating pumping or mixing element and various other components for use in a pumping or mixing system as disclosed. The pumping or mixing element is placed in a fluid-containing vessel in close proximity to a superconducting element. A cooling source thermally linked to the superconducting element provides the necessary cooking to induce levitation in the pumping or mixing element. The superconducting element may be thermally isolated, such that the pumping or mixing element, the vessel, and any fluid contained therein are not exposed to the cold temperatures required to produce the desired superconductive effects and the resulting levitation. By using means external to the vessel to rotate and/or stabilize the pumping or mixing element levitating in the fluid, including possibly rotating the superconducting element itself or moving it relative to the vessel, the desired effective pumping or mixing action may be provided.
Abstract:
A kit for assisting in the set-up of a fluid pumping or mixing system including a superconducting element capable of reaching a transition temperature during a field cooling process is disclosed. In one embodiment, the kit comprises at least one pumping or mixing element including a levitation magnet and at least one charging magnet substantially corresponding in size, shape, and magnetic field distribution to the levitation magnet. The presence of the charging magnet adjacent the superconducting element during the field cooling process enables stable levitation of the pumping or mixing element, including when in a fluid-filled vessel positioned adjacent the superconducting element.
Abstract:
An apparatus for circulating a purge solution in an artificial organ (1) has an ultrafiltration filter (71) or reverse osmosis filter (71) in a purge solution circulation route (90, 91) to inhibit passage of substances having molecular weights of 340,000 or more. A portion of the purge solution circulated by a purge solution circulation pump (58) is passed through this filter (71) to remove proteins that have mixed in the purge solution. The purge solution free from the proteins is supplied and circulated through the artificial organ (1). Proteins that have externally mixed in the purge solution can be prevented from coagulating and depositing on a seal mechanism and the like of the artificial organ (1).
Abstract:
PROBLEM TO BE SOLVED: To measure the flow rate and lift of a centrifugal pump and evaluate a circulation function during circulation assistance by the centrifugal pump. SOLUTION: In the centrifugal pumps 10, 30, 60, 70, 80 which keeps impellers 14 rotating, the flow rate and lift of the pump are estimated on the basis of the lateral force applied to the impeller 14 during the rotation of the impeller 14, and the circulation state of a pulsing circulation system is evaluated. COPYRIGHT: (C)2007,JPO&INPIT