US 10,500,321 B2Granted

Implantable blood pump

AssigneeTc1 LLC

InventorKevin Bourque

Life of this patent

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Abstract

A method for assisting blood circulation in a patient includes drawing a flow of blood from a patient's heart into a blood flow channel formed by a housing. The flow of blood is passed through a motor stator to a rotor disposed within the blood flow channel. The motor stator is arranged circumferentially around the blood flow channel. The rotor has permanent magnetic poles for magnetic levitation and rotation of the rotor. The motor stator is controlled to act as a radial bearing for magnetic levitation of the rotor and to rotate the rotor within the blood flow channel. The rotor is levitated within the blood flow channel in the direction of the rotor axis of rotation via passive magnetic interaction between the rotor and the motor stator. The flow of blood is output from the blood flow channel to the patient.

Claims16

Dependent claims

A method for assisting blood circulation in a patient, the method comprising:

drawing a flow of blood from a patient's heart into a blood flow channel formed by a housing;
passing the flow of blood through a motor stator to a rotor disposed within the blood flow channel, the motor stator being arranged circumferentially around the blood flow channel, the rotor having permanent magnetic poles for magnetic levitation and rotation of the rotor;
passing a first portion of the flow of blood through a central aperture formed through the rotor;
passing a second portion of the flow of blood through a gap formed between the rotor and the housing;
controlling delivery of current to the motor stator to control a radial position of the rotor within the blood flow channel and to control rotation of the rotor within the blood flow channel, the rotor being rotated around a rotor axis of rotation;
levitating the rotor within the blood flow channel in the direction of the rotor axis of rotation via only a passive magnetic interaction between the rotor and the motor stator;
and
outputting the flow of blood from the blood flow channel to the patient.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/594,373Filed 12 May 2017 · division
Priority: 20 Aug 2010
Published: US 2017/0246365 A131 Aug 2017
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

A61M 60/419
For non-positive displacement blood pumps: the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic…
A61M 60/148
Implantable via, into, inside, in line, branching on, or around a blood vessel: in line with a blood vessel using resection or like techniques,…
A61M 60/178
Implantable in, on, or around the heart: drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to…
A61M 60/232
The blood flow through the rotating member having mainly radial components: centrifugal pumps

Family

Application61/375,504Us provisional application · filed 20 Aug 2010
Application13/212,813Parent of this continuation · filed 18 Aug 2011
Application14/735,990Parent of this division · filed 10 Jun 2015
US 2017/0246365 A1Pre-grant publication · published 31 Aug 2017
US 9,675,741 B2Parent of this division
US 9,091,271 B2Parent of this continuation
Application14/735,990Parent of this continuation
US 2012/0046514 A1Published application
US 2015/0273125 A1Published application
US 10,500,321 B2This patent

From the US filing history. Foreign family members aren’t listed.

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