# US 9,750,860 B2 · Compressible motor, implantation arrangement, and method for positioning the motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,750,860 B2 - Document ID: US9750860B2 - Status: Granted - Kind: B2 - Application number: 15/028,588 - Filed: 2014-10-09 - Published: 2016-09-01 - Granted: 2017-09-05 - Earliest claimed: 2013-10-11 - Assignees: Ecp Entwicklungsgesellschaft Mbh - Applicants: Ecp Entwicklungsgesellschaft Mbh - Inventors: Joerg Schumacher - Web page: https://patentgrep.com/patent/US9750860B2 ## CPC - H02K 3/47: Air-gap windings, i.e. iron-free windings - A61M 60/122: Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body - A61M 60/216: including a rotating member acting on the blood, e.g. impeller - A61M 60/416: transmitted directly by the motor rotor drive shaft - A61M 60/419: the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets - A61M 60/422: the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps - A61M 60/825: Contact bearings, e.g. ball-and-cup or pivot bearings - A61M 60/865: Devices for guiding or inserting pumps or pumping devices into the patient's body - H02K 99/20: {Motors} - A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices - A61M 60/414: transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter - A61M 2205/0266: Shape memory materials - A61M 2205/04: implanted - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 1) The motor according to claim 1, wherein the rotor is compressible in the radial direction. ### Claim 4 (depends on 3) The motor according to claim 3, wherein the rotor has a plurality of magnet elements, which are reversibly movable relative to one another. ### Claim 5 (depends on 1) The motor according to claim 1, wherein the winding arrangement has at least two sub-windings, which are reversibly displaceable relative to one another. ### Claim 6 (depends on 5) The motor according to claim 5, wherein the sub-windings can be slid one over the other. ### Claim 7 (depends on 1) The motor according to claim 1, wherein the winding arrangement has at least one sub-winding cast in a resilient material. ### Claim 8 (depends on 1) 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. ### Claim 9 (depends on 1) The motor according to claim 1, wherein the winding arrangement has leads consisting at least partially of a memory alloy. ### Claim 10 (depends on 1) 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. ### Claim 11 (depends on 1) 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. ### Claim 12 (depends on 1) The motor according to claim 1, wherein the rotor is radially compressible and expandable. ### Claim 13 (depends on 1) 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. ### Claim 14 (depends on 1) An implantation arrangement having a hollow catheter and a motor according to claim 1 compressed therein. ### Claim 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. ### Claim 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. ### Claim 17 (depends on 16) 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. ### Claim 18 (depends on 17) The pump according to claim 17, wherein the pump rotor in the operating state is located at least partially within the stator. ### Claim 19 (depends on 17) The pump according to claim 17, wherein the pump rotor is radially compressible. ### Claim 20 (depends on 17) The pump according to claim 17, wherein the pump rotor is radially resiliently compressible. ### Claim 21 (depends on 16) The pump according to claim 16, wherein the rotor is radially compressible and expandable.