Heart pump controller
First Claim
1. A heart pump including:
- a) first and second cavity portions, each cavity portion including a respective inlet and outlet;
b) a connecting tube extending between the first and second cavity portion;
c) an impeller including;
i) a first set of vanes mounted on a first rotor in the first cavity portions;
ii) a second set of vanes mounted on a second rotor in the second cavity portion; and
,iii) a shaft connecting the first and second rotors, the shaft extending through the connecting tube;
iv) a first magnetic material mounted in the first rotor; and
v) a second magnetic material mounted in the second rotor;
d) a drive for rotating the impeller, the drive being positioned adjacent the second cavity, the drive and second magnetic material being configured to result in an attractive force between the drive and the second rotor; and
,e) a magnetic bearing including at least one bearing coil for controlling an axial position of the impeller, the magnetic bearing being positioned adjacent the first cavity, the magnetic bearing and first magnetic material being configured to result in an attractive force between the magnetic bearing and the first rotor; and
wherein at least one of the drive and magnetic bearing being provided at least partially between the first and second cavity portions.
3 Assignments
0 Petitions
Accused Products
Abstract
A heart pump including first and second cavities, each cavity including a respective inlet and outlet, a connecting tube extending between the first and second cavities, an impeller including: a first set of vanes mounted on a first rotor in the first cavity portion; a second set of vanes mounted on a second rotor in the second cavity portion; and, a shaft connecting the first and second rotors, the shaft extending through the connecting tube, a drive for rotating the impeller and a magnetic bearing including at least one bearing coil for controlling an axial position of the impeller, at least one of the drive and magnetic bearing being mounted outwardly of the connecting tube, at least partially between the first and second cavity portions.
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Citations
34 Claims
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1. A heart pump including:
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a) first and second cavity portions, each cavity portion including a respective inlet and outlet; b) a connecting tube extending between the first and second cavity portion; c) an impeller including; i) a first set of vanes mounted on a first rotor in the first cavity portions; ii) a second set of vanes mounted on a second rotor in the second cavity portion; and
,iii) a shaft connecting the first and second rotors, the shaft extending through the connecting tube; iv) a first magnetic material mounted in the first rotor; and v) a second magnetic material mounted in the second rotor; d) a drive for rotating the impeller, the drive being positioned adjacent the second cavity, the drive and second magnetic material being configured to result in an attractive force between the drive and the second rotor; and
,e) a magnetic bearing including at least one bearing coil for controlling an axial position of the impeller, the magnetic bearing being positioned adjacent the first cavity, the magnetic bearing and first magnetic material being configured to result in an attractive force between the magnetic bearing and the first rotor; and
wherein at least one of the drive and magnetic bearing being provided at least partially between the first and second cavity portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of controlling a heart pump, the heart pump including:
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a) first and second cavity portions, each cavity portion including a respective inlet and outlet; b) a connecting tube extending between the first and second cavity portion; c) an impeller including; i) a first set of vanes mounted on a first rotor in the first cavity portions; ii) a second set of vanes mounted on a second rotor in the second cavity portion; and
,iii) a shaft connecting the first and second rotors, the shaft extending through the connecting tube; d) a drive for rotating the impeller; and
,e) a magnetic bearing including at least one bearing coil for controlling an axial position of the impeller, at least one of the drive and magnetic bearing being provided at least partially between the first and second cavity portions, the method including; i) determining movement of the impeller in a first axial direction; ii) causing the magnetic bearing to move the impeller in a second axial direction opposite the first axial direction; iii) determining an indicator indicative of the power used by the magnetic bearing; and
,iv) causing the magnetic bearing to control the axial position of the impeller in accordance with the indicator to thereby control a fluid flow between the inlets and the outlets.
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31. A pump apparatus comprising:
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a) a stator; b) an upper rotor arranged spaced apart above the stator; c) a lower rotor arranged spaced apart under the stator; d) connecting means provided rotatably and vertically movable at the stator to connect the upper rotor and the lower rotor; e) first electromagnetic means that is provided on one surface of the stator opposed to either one of permanent magnets, which are provided on a bottom surface of the upper rotor and a top surface of the lower rotor, cooperates with the permanent magnet, and that generates an acting force with respect to the rotor in an axial direction to thereby levitate the rotor; f) second electromagnetic means that is provided on the other surface of the stator opposed to the other permanent magnet, and that cooperates with the permanent magnet to thereby rotationally drive the rotor; g) first pumping means at which a first impeller provided on a top surface of the upper rotor rotates in a first pump chamber; and h) second pumping means at which a second impeller provided on a bottom surface of the lower rotor rotates in a second pump chamber. - View Dependent Claims (32, 33)
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34. A heart pump including:
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a) first and second cavity portions, each cavity portion including a respective inlet and outlet; b) a connecting tube extending between the first and second cavity portion; c) an impeller including; i) a first set of vanes mounted on a first rotor in the first cavity portions; ii) a second set of vanes mounted on a second rotor in the second cavity portion; and
,iii) a shaft connecting the first and second rotors, the shaft extending through the connecting tube; iv) a first magnetic material mounted in the first rotor; and v) a second magnetic material mounted in the second rotor; d) a drive for rotating the impeller, the drive being positioned adjacent the second cavity, the drive and second magnetic material being configured to result in an attractive force between the drive and the second rotor; and
,a magnetic bearing including at least one bearing coil for controlling an axial position of the impeller, the magnetic bearing being positioned adjacent the first cavity, the magnetic bearing and first magnetic material being configured to result in an attractive force between the magnetic bearing and the first rotor.
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Specification