Blood pump with in-situ attaching motor stators
AssigneeHeartWare, Inc.
InventorsJeffrey A. Larose, Gill B. Bearnson, Stanley P. Mack, Charles R. Shambaugh
Life of this patent
Estimating the term…
Abstract
A housing having an interior and an exterior. A pump rotor is configured to be received within the interior of the housing, the pump rotor includes a magnet. A stator having a delivery configuration and an operative configuration is included, the stator in the delivery configuration has a delivery diameter, the stator in the operative configuration being configured to be disposed around the exterior of the housing and to form an assembled pump having a diameter greater than the delivery diameter.
Claims20
A blood pump, comprising:
- a housing having an interior and an exterior, the housing defining a housing axis and an axial direction along the housing axis;
- a pump rotor configured to be received within the interior of the housing, the pump rotor including a magnet;
- and
- a stator having a plurality of stator units, each stator unit having a coil and a delivery configuration and an operative configuration, the plurality of stator units in the delivery configuration having a delivery diameter, the plurality of stators units in the operative configuration being configured to:
- be disposed around the exterior of the housing;
- and
- form an assembled pump having a diameter greater than the delivery diameter.
A blood pump implantation assembly, comprising:
- a delivery device;
- a pump mounted to the delivery device proximate a distal end thereof, the pump including a pump housing, a rotor configured to be disposed within the pump housing and a stator having stator units, the pump in the operative configuration having the stator units disposed around the housing axis with the coil axes of the stator units transverse to the housing axis;
- the pump in a delivery condition having the stator units offset from the pump housing and having the stator define a first diameter, the delivery device being configured to transition the pump from the delivery condition to an operative condition in which the stator is in an operative configuration disposed around the pump housing and defines a second diameter larger than the first diameter.
A method of implanting a blood pump in the body of a living subject, comprising:
- advancing the pump into the body of the subject to a target location, the pump being in a delivery condition in which a stator of the pump has stator units separate from a pump housing and the pump has a delivery diameter, each stator unit having a coil;
- and
- transitioning the stator units to an operative condition in which the stator is disposed around the pump housing and the pump has an operative diameter greater than the delivery diameter when in the operative condition.
Dependencies are inferred from the claim text.