Implantable blood pump
First Claim
Patent Images
1. An implantable blood pump comprising:
- a housing defining an inlet opening and an outlet opening oriented at an angle from the inlet opening;
a dividing wall within the housing defining a blood flow conduit for carrying blood, the blood flow conduit extending between the inlet opening and the outlet opening of the housing; and
a rotary motor including a stator and a rotor, the stator comprising coils configured to interact with the rotor, the stator being disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator, the stator being disposed circumferentially about at least a part of the rotor and being positioned relative to the rotor such at least portions of the coils are located upstream of the rotor, the rotor having a rotor axis of rotation and including a rotor magnet for driving the rotor, and the stator including pole pieces that axially overlap with the rotor magnet with respect to the rotor axis of rotation.
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0 Petitions
Accused Products
Abstract
An implantable blood pump includes a housing defining an inlet opening and an outlet opening. Within the housing, a dividing wall defines a blood flow conduit extending between the inlet opening and the outlet opening of the housing. The blood pump has a rotary motor that includes a stator and a rotor. The stator is disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator.
123 Citations
41 Claims
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1. An implantable blood pump comprising:
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a housing defining an inlet opening and an outlet opening oriented at an angle from the inlet opening; a dividing wall within the housing defining a blood flow conduit for carrying blood, the blood flow conduit extending between the inlet opening and the outlet opening of the housing; and a rotary motor including a stator and a rotor, the stator comprising coils configured to interact with the rotor, the stator being disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator, the stator being disposed circumferentially about at least a part of the rotor and being positioned relative to the rotor such at least portions of the coils are located upstream of the rotor, the rotor having a rotor axis of rotation and including a rotor magnet for driving the rotor, and the stator including pole pieces that axially overlap with the rotor magnet with respect to the rotor axis of rotation. - 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, 30, 31)
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32. An implantable blood pump comprising:
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a housing defining an inlet opening and an outlet opening; a dividing wall within the housing defining a blood flow conduit, the blood flow conduit extending between the inlet opening and the outlet opening of the housing; a rotary motor including a stator and a rotor, the stator being disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator, the stator being disposed circumferentially about at least a part of the rotor and being positioned relative to the rotor such that in use blood flows within the blood flow conduit through the stator before reaching the rotor, and the rotor having permanent magnetic poles for magnetic levitation of the rotor; a passive magnetic control system configured to control an axial position of the rotor relative to the stator; and an active electromagnetic control system configured to radially center the rotor within the inner blood flow conduit.
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33. An implantable blood pump comprising:
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a housing defining an inlet opening and an outlet opening; a dividing wall within the housing defining a blood flow conduit for carrying blood, the blood flow conduit extending between the inlet opening and the outlet opening of the housing; and a rotary motor including a stator and a rotor, the stator being disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator, the stator being disposed circumferentially about at least a part of the rotor and being positioned relative to the rotor such that the blood flow conduit extends through the stator before reaching the rotor, and the rotor having permanent magnetic poles for magnetic levitation of the rotor; wherein the stator includes a back iron; wherein the stator includes pole pieces arranged at intervals around the dividing wall and each of the pole pieces is L-shaped; and wherein each of the pole pieces has a first leg that contacts the back iron and extends from the back iron, and each of the pole pieces has a second leg that extends from the first leg toward the dividing wall. - View Dependent Claims (34, 35, 36)
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37. An implantable blood pump comprising:
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a housing defining an inlet opening and an outlet opening; a dividing wall within the housing defining a blood flow conduit for carrying blood, the blood flow conduit extending between the inlet opening and the outlet opening of the housing; a rotary motor including a stator and a rotor, the stator being disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator, the stator being disposed circumferentially about at least a part of the rotor and being positioned relative to the rotor such that the blood flow conduit extends through the stator before reaching the rotor, and the rotor having permanent magnetic poles for magnetic levitation of the rotor; a passive magnetic control system configured to act as an axial bearing for magnetic levitation of the rotor; and an active electromagnetic control system configured to act as a radial bearing for magnetic levitation of the rotor.
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38. An implantable blood pump comprising:
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a housing defining an inlet opening and an outlet opening oriented at an angle from the inlet opening; a dividing wall within the housing defining a blood flow conduit for carrying blood, the blood flow conduit extending between the inlet opening and the outlet opening of the housing; and a rotary motor including a stator and a rotor, the stator comprising coils configured to interact with the rotor, the stator being disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator, the stator being disposed circumferentially about at least a part of the rotor and being positioned relative to the rotor such that the blood flow conduit extends through the stator before reaching the rotor, and the rotor having a rotor axis of rotation and including a rotor magnet for driving the rotor, and the stator including pole pieces that axially overlap with the rotor magnet with respect to the rotor axis of rotation; wherein the implantable blood pump comprises a back iron located within the housing, the back iron being positioned such that in use blood flows within the blood flow conduit through the back iron before reaching the coils. - View Dependent Claims (39)
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40. An implantable blood pump comprising:
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a housing defining an inlet opening and an outlet opening oriented at an angle from the inlet opening; a dividing wall within the housing defining a blood flow conduit for carrying blood, the blood flow conduit extending between the inlet opening and the outlet opening of the housing; and a rotary motor including a stator and a rotor, the stator comprising coils configured to interact with the rotor, the stator being disposed within the housing circumferentially about the dividing wall such that the inner blood flow conduit extends through the stator, the stator being disposed circumferentially about at least a part of the rotor and being positioned relative to the rotor such that the blood flow conduit extends through the stator before reaching the rotor, and the rotor having a rotor axis of rotation and including a rotor magnet for driving the rotor, and the stator including pole pieces that axially overlap with the rotor magnet with respect to the rotor axis of rotation; wherein the rotor comprises a central hole such that in use blood flows through the central hole of the rotor. - View Dependent Claims (41)
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Specification