Pump and method for mixed flow blood pumping

Patent metadata

Field	Value
Publication number	US-2017232168-A1
Application number	US-201615359231-A
Country	US
Kind code	A1
Filing date	Nov 22, 2016
Priority date	Oct 13, 2011
Publication date	Aug 17, 2017
Grant date	—

Abstract

A blood pump includes a hub having an axis of rotation and a generally cylindrical shape. The hub has an upstream end region, a central region, and a downstream end region, and the hub includes a magnetic material. Blades that are disposed on the downstream end region of the hub extend downstream of the hub.

First claim

What is claimed is:

1 . A blood pump assembly, comprising:
an implantable blood pump having a motor stator with phase windings for at least three phases, each of the phase windings having a first end and a second end, each of the second ends of the phase windings being connected to a common loadable point; a pump controller; and a percutaneous lead for connecting the blood pump to the pump controller, the percutaneous lead including a set of conductors comprising: a first conductor for connecting the pump controller and the first end of a first of the phase windings, a second conductor for connecting the pump controller and the first end of a second of the phase windings, a third conductor for connecting the pump controller and the first end of a third of the phase windings, and an additional conductor for connecting the pump controller and the common loadable point; wherein the pump controller is configured to independently control the current in the first, second, third, and additional conductors.

2 . The blood pump assembly of claim 1 , wherein the pump controller is configured to allow operation of the pump with the additional conductor as a neutral connection to the common loadable point.

3 . The blood pump assembly of claim 1 , wherein the pump controller is configured to operate the pump in a three-phase mode, a two-phase mode, or a one-phase mode.

4 . The blood pump assembly of claim 3 , wherein the pump controller is configured to:
operate the blood pump in the three-phase mode; detect a fault condition in which one of the first, second, or third conductors is disconnected; and in response to detecting the fault condition in which one of the first, second, or third conductors is disconnected, change from operating the blood pump in the three-phase to operating the blood pump in the two-phase mode.

5 . The blood pump assembly of claim 3 , wherein the pump controller is configured to:
detect a fault condition in which two of the first, second, or third conductors are disconnected; and in response to detecting the fault condition in which two of the first, second, or third conductors are disconnected, operate the blood pump in the one-phase mode.

6 . The blood pump assembly of claim 3 , wherein the pump controller is configured to:
detect a fault condition in which one of the first, second, or third conductors and the additional conductor are disconnected; and in response to detecting the fault condition in which one of the first, second, or third conductors and the additional conductor are disconnected, operate the blood pump in the one-phase mode.

Assignees

• Tc1 Llc

Inventors

• Reichenbach Steven H
• Briana Stephen G
• Hodges William V
• Lee Eric
• Woo Yi-Ren
• Dur Onur
• Eldridge David Gary
• Le Blanc Pieter W C J

Classifications

• F04D13/06

  the pump being electrically driven · CPC title

• A61M1/1013

  Human Necessities · mapped topic

• F04D15/0077

  Safety measures (F04D15/02 takes precedence) · CPC title

• A61M2205/702

  automatically during use · CPC title

• A61M1/1086

  Human Necessities · mapped topic