Compressible motor, implantation arrangement, and method for positioning the motor

Patent metadata

Field	Value
Publication number	US-9750860-B2
Application number	US-201415028588-A
Country	US
Kind code	B2
Filing date	Oct 9, 2014
Priority date	Oct 11, 2013
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

The invention relates to a motor with a stator ( 2, 2 ′) and a rotor ( 1, 1 ′), which can be driven about an axial direction ( 4 ). The invention is characterized in that at least one of the stator and the rotor, in particular the stator, which has a winding arrangement that can be supplied with a current, can be radially compressed and expanded.

First claim

The invention claimed is:

1. A motor, comprising:
a rotor that can be driven about an axial direction; and
a stator, which has a winding arrangement that can be supplied with a current;
wherein the stator is radially compressible and expandable, and wherein the winding arrangement has at least one sub-winding, which is reversibly deformable.

2. The motor according to claim 1 , wherein the rotor and the stator can be displaced relative to one another in the axial direction between a first position, in which the stator is radially compressible, and a second position, in which the stator is radially expanded.

3. The motor according to claim 1 , wherein the rotor is compressible in the radial direction.

4. The motor according to claim 3 , wherein the rotor has a plurality of magnet elements, which are reversibly movable relative to one another.

5. The motor according to claim 1 , wherein the winding arrangement has at least two sub-windings, which are reversibly displaceable relative to one another.

6. The motor according to claim 5 , wherein the sub-windings can be slid one over the other.

7. The motor according to claim 1 , wherein the winding arrangement has at least one sub-winding cast in a resilient material.

8. The motor according to claim 1 , wherein the winding arrangement has at least two sub-windings which are cast in separate sub-bodies and are movable relative to one another.

9. The motor according to claim 1 , wherein the winding arrangement has leads consisting at least partially of a memory alloy.

10. The motor according to claim 1 , wherein the winding arrangement has elements movable relative to one another and bend and/or kink regions defined between said elements.

11. The motor according to claim 1 , further comprising a connection element, which extends away from the motor and by means of which the rotor and stator are displaceable relative to one another in the axial direction.

12. The motor according to claim 1 , wherein the rotor is radially compressible and
expandable.

13. The motor according to claim 1 , wherein the stator comprises a plurality of sub-windings arranged in succession along an axis, wherein the stator is compressible by tilting the sub-windings relative to said axis.

14. An implantation arrangement having a hollow catheter and a motor according to claim 1 compressed therein.

15. A method for positioning a motor, the method comprising:
inserting a stator and a rotor through a channel to a target position, wherein at least the stator is radially compressed,
radially expanding at least the stator thereafter, and
after inserting the stator and the rotor through a channel into the target position, displacing the stator and rotor relative to one another in the axial direction.

16. A pump, in particular blood pump, comprising:
a motor having a stator and a rotor, wherein the rotor can be driven about an axial direction, wherein the stator, which has a winding arrangement that can be supplied with a current, is radially compressible and expandable, the motor having a connection element, which extends away from the motor and by means of which the rotor and the stator are displaceable relative to one another in the axial direction.

17. The pump according to claim 16 , wherein the rotor is connected to a pump rotor, wherein the pump rotor has a blading for conveying fluids.

18. The pump according to claim 17 , wherein the pump rotor in the operating state is located at least partially within the stator.

19. The pump according to claim 17 , wherein the pump rotor is radially compressible.

20. The pump according to claim 17 , wherein the pump rotor is radially resiliently compressible.

21. The pump according to claim 16 , wherein the rotor is radially compressible and expandable.

Assignees

• Ecp Entw Mbh

Inventors

• Schumacher Joerg

Classifications

• A61M2205/0266

  Shape memory materials · CPC title

• H02K99/20

  Motors · CPC title

• A61M2205/04

  implanted · CPC title

• A61M60/416

  transmitted directly by the motor rotor drive shaft · CPC title

• A61M60/414

  transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter · CPC title