초록 ▼

A blood pump used for heart-lung machines comprising an impeller, a casing having a suction inlet and a delivery outlet and rotatably encasing the impeller, a magnetic driver disposed outside the casing, and a magnetic attraction force adjuster. The impeller has a rotationally symmetric shape, such

A blood pump used for heart-lung machines comprising an impeller, a casing having a suction inlet and a delivery outlet and rotatably encasing the impeller, a magnetic driver disposed outside the casing, and a magnetic attraction force adjuster. The impeller has a rotationally symmetric shape, such as a conical shape, is equipped with vanes having a pumping function on the side surface thereof and is also equipped with magnets, such as permanent magnets. The magnetic driver for rotating the impeller in cooperation with the magnets comprises a magnet assembly magnetically connected to the magnets and a rotation driver for rotating the magnet assembly. The magnetic attraction force adjuster adjusts the magnetic attraction force generated between the magnets and the magnet assembly by adjusting the gap between the magnets and the magnet assembly or by adjusting the exciting current of electromagnets when electromagnets are used for the magnet assembly. One of the pivot and pivot bearing for supporting the rotation shaft of the impeller is made of ceramics and the other is made of synthetic resin.

대표청구항 ▼

A blood pump, comprising: a rotationally symmetric impeller comprising a plurality of vanes and magnetic means for rotating the impeller, a casing in which the impeller is rotatably encasable, the casing having an inlet and an outlet, magnetic drive means disposed outside the casing for rotating the

A blood pump, comprising: a rotationally symmetric impeller comprising a plurality of vanes and magnetic means for rotating the impeller, a casing in which the impeller is rotatably encasable, the casing having an inlet and an outlet, magnetic drive means disposed outside the casing for rotating the impeller in cooperation with the magnetic means, the magnetic drive means comprising a magnet assembly magnetically connectable with the magnetic means and rotation drive means for rotating the magnet assembly, the magnet assembly and the magnetic means generating a magnetic attraction force therebetween, and magnetic attraction force adjustment means for adjusting the magnetic attraction force between the magnet assembly and the magnetic means and for substantially balancing the magnetic attraction force and a lifting force applied to the impeller.