초록 ▼

A blood pump intended to be carried by a freely moving patient uses perpendicular magnetic and electrical fields to propel blood. A rod mounted coaxially inside a tube has electrodes in blood contact for establishing a radial electric field, and an inductor having windings parallel to the axis of th

A blood pump intended to be carried by a freely moving patient uses perpendicular magnetic and electrical fields to propel blood. A rod mounted coaxially inside a tube has electrodes in blood contact for establishing a radial electric field, and an inductor having windings parallel to the axis of the tube is used to establish a circumferential magnetic field. To avoid the evolution of gas at the electrode surfaces the magnetic and electric fields are periodically reversed, and the electrodes are made to have very high surface areas. The blood pump is powered by batteries or fuel cells (or a combination of both) to provide long service between recharging and to reduce the weight carried by the patient.

대표청구항 ▼

1. A blood pump comprising:a conduit having an inner electrically conductive surface and an outer surface, said conductive inner surface forming a first electrode; a rod having a central axis and an electrically conductive outer surface forming a second electrode, said rod located within the extents

1. A blood pump comprising:a conduit having an inner electrically conductive surface and an outer surface, said conductive inner surface forming a first electrode; a rod having a central axis and an electrically conductive outer surface forming a second electrode, said rod located within the extents of said conduit; a blood flow channel formed by said rod outer surface and said conduit inner surface; an elongate toroid having an inner surface and an outer surface, said conduit outer surface located substantially within the extents of said toroid inner surface; a current-carrying conductor applied around said toroid, said conductor producing a circumferential magnetic field around said rod central axis; a voltage source connected between said first electrode and said second electrode; a current source furnishing current through said current carrying conductor.