# US 11,077,295 B2 · System for connecting a blood pump to a heart > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,295 B2 - Document ID: US11077295B2 - Status: Granted - Kind: B2 - Application number: 15/758,919 - Filed: 2016-09-12 - Published: 2019-02-07 - Granted: 2021-08-03 - Earliest claimed: 2015-09-11 - Assignees: Berlin Heart GmbH - Applicants: Berlin Heart GmbH - Inventors: Nedim Arslan; Heiko Gundlach; Benjamin Daniel Kaebe; Gerhard Lauterbach; Michael Matthes; Kim Peter Winterwerber - Web page: https://patentgrep.com/patent/US11077295B2 ## CPC - A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices - A61M 60/178: drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices - A61M 60/183: drawing blood from both ventricles, e.g. bi-ventricular assist devices [BiVAD] - A61M 60/232: Centrifugal pumps - A61M 60/861: Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body - A61M 60/863: Apex rings - 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 A system is provided for connecting a blood pump to a heart, the system comprising: a blood pump for conveying blood, wherein the blood pump comprises a first tubular portion and a second tubular portion, and between the first and the second tubular portion, there is a flange-shaped portion; and comprising a connector having a tubular connector portion extending in an axial direction between a distal end and a proximal end having a lumen for receiving the first tubular portion of the blood pump, and having a flange-shaped connector portion arranged at the distal end for fastening the connector to an organ. ## Claims ### Claim 1 A system for connecting a blood pump to a heart, the system comprising: the blood pump for conveying blood, wherein the blood pump further comprises a flange-shaped portion, a first tubular portion, and a second tubular portion, wherein the flange-shaped portion is between the first and the second tubular portions; a connector including a tubular connector portion, a distal end, a proximal end, a lumen, and a flange-shaped connector portion, the tubular connector portion extending in an axial direction between the distal end and the proximal end, the lumen for receiving the first tubular portion of the blood pump, and the flange-shaped connector portion arranged at the distal end for fastening the connector to an organ; and a locking ring; wherein the blood pump further comprises a first toothed portion and the connector further comprises a second toothed portion corresponding to the first toothed portion, such that the blood pump is rotationally fixed relative to the connector when the first and the second toothed portions engage in one another; and wherein the locking ring is configured to axially hold the blood pump on the connector. ### Claim 2 (depends on 1) The system of claim 1, wherein the locking ring engages a side of a region arranged on the blood pump or on the connector. ### Claim 3 (depends on 1) The system of claim 1, wherein a wall of the tubular connector portion surrounding the lumen comprises an expansion having the form of a latching lug surrounding the wall, at least sectionally, wherein the locking ring is arranged in the flange-shaped portion of the blood pump and is expandable in a guiding gap, and is guidable in the guiding gap such that in a first state, the locking ring engages the wall on a first side of the expansion and, in a second, expanded state, does not engage the wall on the first side of the expansion, wherein the locking ring is configured to move axially from a second side of the expansion to the first side of the expansion in the expanded state. ### Claim 4 (depends on 3) The system of claim 3, wherein the expansion surrounds the wall fully. ### Claim 5 (depends on 3) The system of claim 3, wherein the latching lug comprises a flat portion at a proximal end, which flat portion corresponds with the flange-shaped portion of the blood pump. ### Claim 6 (depends on 3) The system of claim 3, wherein the guiding gap has a width corresponding to a height of the locking ring, such that the blood pump is fixed in the axial direction in the first state. ### Claim 7 (depends on 3) The system of claim 3, wherein the guiding gap is open in a radial direction. ### Claim 8 (depends on 3) The system of claim 3, wherein a portion of the flange-shaped portion of the blood pump further comprises a stop ring, which centres the locking ring in the second, expanded state. ### Claim 9 (depends on 3) The system of claim 3, wherein the locking ring comprises a portion engaging the first side of the expansion and a further portion angled relative to the portion engaging the first side of the expansion, wherein the angled portion of the locking ring is formed in such a way that the angled portion in the first state is radially supported on a partial segment of the flange-shaped portion or of the first tubular portion. ### Claim 10 (depends on 1) The system of claim 1, wherein the locking ring is fixed to one end of the blood pump. ### Claim 11 (depends on 1) The system of claim 1, wherein the locking ring is an open circlip. ### Claim 12 (depends on 1) The system of claim 1, wherein the flange-shaped portion of the blood pump comprises openings to the second tubular portion. ### Claim 13 (depends on 12) The system of claim 12, further comprising a casing that is configured to be drawn over the blood pump, the casing comprising at least one tongue, which protrudes into at least one of the openings. ### Claim 14 (depends on 1) The system of claim 1 further comprising a sealing element, wherein the first tubular portion further comprises a groove, in which the sealing element is arranged in such a way that the sealing element lies sealingly against an inner face of a wall of the tubular connector portion. ### Claim 15 (depends on 1) The system of claim 1, wherein the first tubular portion is an inlet port of the blood pump.