# US 10,478,540 B2 · Pump, in particular a blood pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,540 B2 - Document ID: US10478540B2 - Status: Granted - Kind: B2 - Application number: 15/033,409 - Filed: 2014-10-31 - Published: 2016-09-29 - Granted: 2019-11-19 - Earliest claimed: 2013-11-01 - Assignees: Ecp Entwicklungsgesellschaft Mbh - Applicants: Ecp Entwicklungsgesellschaft Mbh - Inventors: Mario Scheckel; Robert Decke - Web page: https://patentgrep.com/patent/US10478540B2 ## CPC - A61M 60/414: transmitted by a rotating cable, e.g. for blood pumps mounted on a catheter - A61M 60/13: by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system - A61M 60/237: the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps - A61M 60/808: specially adapted for deformable impellers, e.g. expandable impellers - A61M 60/81: Pump housings - A61M 60/825: Contact bearings, e.g. ball-and-cup or pivot bearings - A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices - A61M 2205/0238: the material being a coating or protective layer - A61M 2205/0266: Shape memory materials - 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 present invention relates to a pump, in particular a blood pump having a proximal and a distal end and a pump housing arranged therebetween, a driveshaft arranged in an interior of the pump housing along the longitudinal direction, a conveying element arranged on the driveshaft, and a cannula. Here, the pump housing, the shaft arrangement and the conveying element are coordinated with one another in such a way that these guarantee the best possible efficiency and longevity of the pump. ## Claims ### Claim 1 A pump, in particular a blood pump, comprising a proximal and a distal end and a pump housing arranged therebetween, a driveshaft arranged in an interior of the pump housing along a longitudinal direction, a conveying element arranged on the driveshaft, and a cannula, wherein the pump housing is formed in such a way that the pump housing can be transferred at least in part into the cannula under application of a force acting at the proximal end of the pump, and in doing so is transferred at least along a radial direction extending transversely to the longitudinal direction from an expandable state into a compressed state; and wherein the pump housing also has at least one portion which in the expanded state comprises structures extending along the longitudinal axis helically around the longitudinal axis and wound in a first direction as considered from the proximal to the distal end of the pump; and wherein the conveying element comprises at least one foldable segment, wherein the structures extending helically are formed in such a way that a torque directed against the first direction acts on the at least one foldable segment causing it to collapse. ### Claim 2 (depends on 1) The pump according to claim 1, wherein the at least one foldable segment of the conveying element is formed in such a way that the torque is directed in the same direction as a rotational direction of the conveying element for conveying a fluid from the distal to the proximal end of the pump. ### Claim 3 (depends on 1) The pump according to claim 1, wherein the at least one foldable segment of the conveying element is formed in such a way that the torque is directed opposite to a conveying direction of the conveying element for conveying a fluid from the distal to the proximal end of the pump. ### Claim 4 (depends on 1) The pump according to claim 1, wherein an unfolding direction of the at least one foldable segment extends in the first direction during the unfolding. ### Claim 5 (depends on 1) The pump according to claim 1, wherein an unfolding direction of the at least one foldable segment extends in a direction opposite to the first direction during the unfolding. ### Claim 6 (depends on 1) The pump according to claim 1, wherein the pump housing is produced from a memory-shape material. ### Claim 7 (depends on 1) The pump according to claim 1, wherein the pump housing comprises a pump-receiving portion and a proximal portion arranged proximally of the pump-receiving portion, wherein an inner diameter of the proximal portion is reduced from a diameter of the pump-receiving portion in the expanded state of the pump housing towards a proximal end of the proximal portion. ### Claim 8 (depends on 7) The pump according to claim 7, wherein the helical structures are arranged in the proximal portion. ### Claim 9 (depends on 7) The pump according to claim 7, wherein the helical structures are arranged in the pump-receiving portion. ### Claim 10 (depends on 7) The pump according to claim 7, wherein the pump housing comprises a further, distal portion arranged distally of the pump-receiving portion, the inner diameter of said further, distal portion is preferably reduced from a diameter of the pump-receiving portion in the expanded state of the pump housing towards a distal end of the distal portion. ### Claim 11 (depends on 10) The pump according to claim 10, wherein the helical structures are arranged in the distal portion. ### Claim 12 (depends on 1) The pump according to claim 1, wherein the driveshaft is pivoted at least in a region of a proximal end of the pump housing. ### Claim 13 (depends on 12) The pump according to claim 12, wherein the driveshaft is pivoted additionally in a region of a distal end of the pump housing. ### Claim 14 (depends on 1) The pump according to claim 1, wherein the helical structures comprise helical struts.