Blood pump with pivotable housing

Patent metadata

Field	Value
Publication number	US-12076548-B2
Application number	US-202117189932-A
Country	US
Kind code	B2
Filing date	Mar 2, 2021
Priority date	Mar 3, 2020
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

Various aspects of the present invention are directed towards apparatuses, systems, and methods that may include a blood pump. The blood pump may include an impeller assembly housing, an impeller assembly having an impeller configured to cause blood to flow through the pump, a motor housing, a motor configured to drive the impeller, and a pivotable housing connector.

First claim

We claim:

1. A blood pump, comprising:
an impeller assembly housing;
an impeller assembly disposed within the impeller assembly housing and having an impeller configured to cause blood to flow through the pump;
a motor housing;
a motor disposed within the motor housing and configured to drive the impeller; and
a pivotable housing connector coupled, at a first end, to a distal end of the motor housing and, at a second end, to a proximal end of the impeller assembly housing, and
wherein the impeller assembly housing and the motor housing are configured to be delivered through an aorta of a patient;
wherein the pivotable housing connector comprises a first portion and a second portion, wherein the first portion is coupled to the second portion by a mechanical pivot joint.

2. The blood pump of claim 1 , the pivotable housing connector comprising a flexible membrane.

3. The blood pump of claim 1 , the motor comprising a driving magnet assembly and the impeller assembly comprising a driven magnet assembly coupled to the impeller and configured to rotate with the impeller, wherein the driving magnet assembly is configured to cause the driven magnet assembly to rotate.

4. A blood pump, comprising:
an impeller assembly housing;
an impeller assembly disposed within the impeller assembly housing and having an impeller configured to cause blood to flow through the pump;
a motor housing;
a motor disposed within the motor housing and configured to drive the impeller; and
a pivotable housing connector coupled, at a first end, to a distal end of the motor housing and, at a second end, to a proximal end of the impeller assembly housing, and
wherein the impeller assembly housing and the motor housing are configured to be delivered through an aorta of a patient;
the motor comprising a driving magnet assembly and the impeller assembly comprising a driven magnet assembly coupled to the impeller and configured to rotate with the impeller, wherein the driving magnet assembly is configured to cause the driven magnet assembly to rotate;
the driving magnet assembly comprising a primary driving surface and the driven magnet assembly comprising a primary driven surface, wherein the primary driving surface and primary driven surface are configured so that the driving magnet assembly and the driven magnet assembly achieve a maximum magnetic coupling when the impeller assembly housing is in a coupling position with respect to the motor housing.

5. The blood pump of claim 4 , wherein when the impeller assembly is in the coupling position, the primary driving surface is parallel to the primary driven surface.

6. The blood pump of claim 5 , further comprising a pivot stop configured to prevent the impeller assembly housing from moving beyond the coupling position.

7. The blood pump of claim 4 , wherein the impeller assembly housing is configured to be moved into one or more additional coupling positions, each of the one or more additional coupling positions corresponding to a specified torque response.

8. A blood pump, comprising:
an impeller assembly housing;
an impeller assembly disposed within the impeller assembly housing and having an impeller configured to cause blood to flow through the pump;
a motor housing;
a motor disposed within the motor housing and configured to drive the impeller; and
a pivotable housing connector coupled, at a first end, to a distal end of the motor housing and, at a second end, to a proximal end of the impeller assembly housing, wherein the impeller assembly housing is configured to be moved into one or more coupling positions, each of the one or more coupling positions corresponding to a specified torque response.

9. The blood pump of claim 8 , the pivotable housing connector comprising a mechanical pivot joint or a flexible membrane.

10. The blood pump of claim 8 , the motor comprising a driving magnet assembly and the impeller assembly comprising a driven magnet assembly coupled to the impeller and configured to rotate with the impeller, wherein the driving magnet assembly is configured to cause the driven magnet assembly to rotate.

11. The blood pump of claim 10 , the driving magnet assembly comprising a primary driving surface and the driven magnet assembly comprising a primary driven surface, wherein the primary driving surface and primary driven surface are configured so that the driving magnet assembly and the driven magnet assembly achieve a maximum magnetic coupling when the impeller assembly housing is in a first coupling position with respect to the motor housing.

12. The blood pump of claim 11 , wherein when the impeller assembly is in the first coupling position, the primary driving surface is parallel to the primary driven surface.

13. The blood pump of claim 12 , further comprising a pivot stop configured to hold the impeller assembly in each of the one or more coupling positions.

14. A blood pump, comprising:
an impeller assembly housing;
an impeller assembly disposed within the impeller assembly housing and having an impeller configured to cause blood to flow through the pump;
a motor housing;
a motor disposed within the motor housing and configured to drive the impeller; and
a pivotable housing connector coupled, at a first end, to a distal end of the motor housing and, at a second end, to a proximal end of the impeller assembly housing, wherein the pivotable housing connector comprises a flexible membrane, and
wherein the pivotable housing connector is configured to accommodate a curvature of an aortic arch of a patient as the impeller assembly housing and the motor housing are delivered through an aorta of the patient;
wherein the impeller assembly housing is configured to be moved into one or more coupling positions, each of the one or more coupling positions corresponding to a specified torque response.

15. The blood pump of claim 14 , the motor comprising a driving magnet assembly and the impeller assembly comprising a driven magnet assembly coupled to the impeller and configured to rotate with the impeller, wherein the driving magnet assembly is configured to cause the driven magnet assembly to rotate.

16. The blood pump of claim 15 , the driving magnet assembly comprising a primary driving surface and the driven magnet assembly comprising a primary driven surface, wherein the primary driving surface and primary driven surface are configured so that the driving magnet assembly and the driven magnet assembly achieve a maximum magnetic coupling when the impeller assembly housing is in a coupling position with respect to the motor housing.

17. The blood pump of claim 14 , the motor comprising a driving magnet assembly and the impeller assembly comprising a driven magnet assembly coupled to the impeller and configured to rotate with the impeller, wherein the driving magnet assembly is configured to cause the driven magnet assembly to rotate.

Assignees

• Boston Scient Scimed Inc

Inventors

• Struthers Brett
• Jancaric Thomas P
• Boyer Matthew

Classifications

• A61M60/804

  Impellers · CPC title

• A61M60/419

  the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets · CPC title

• A61M60/81

  Pump housings · CPC title

• A61M60/237

  the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps · CPC title

• A61M60/216 Primary

  including a rotating member acting on the blood, e.g. impeller · CPC title