# US 2024/0198084 A1 · Pump for delivering a fluid and method of manufacturing a pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2024/0198084 A1 - Document ID: US20240198084A1 - Status: Published application - Kind: A1 - Application number: 18/591,825 - Filed: 2024-02-29 - Published: 2024-06-20 - Earliest claimed: 2020-01-31 - Assignees: Kardion GmbH - Applicants: Kardion GmbH - Inventors: Ingo Stotz - Web page: https://patentgrep.com/patent/US20240198084A1 ## CPC - A61M 60/827: Sealings between moving parts - A61M 60/13: by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system - A61M 60/139: inside the aorta, e.g. intra-aortic balloon pumps - A61M 60/216: including a rotating member acting on the blood, e.g. impeller - A61M 60/221: the blood flow through the rotating member having both radial and axial components, e.g. mixed flow pumps - A61M 60/408: the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable - A61M 60/416: transmitted directly by the motor rotor drive shaft - A61M 60/81: Pump housings - A61M 60/825: Contact bearings, e.g. ball-and-cup or pivot bearings - A61M 60/861: Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body - F04D 7/00: Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts (F04D11/005, F04D29/22 take precedence) - F04D 29/043: Shafts - F04D 29/106: {especially adapted for liquid pumps} - F04D 29/18: Rotors (specially for elastic fluids F04D29/26) - F04D 29/406: {especially adapted for liquid pumps} - F04D 29/605: {specially adapted for liquid pumps} - A61M 2207/00: Methods of manufacture, assembly or production - 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)} - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract The approach presented here concerns a pump for delivering a fluid. The pump comprises an impeller, a drive device with a shaft, a shaft housing and a sealing device. The impeller is shaped to deliver the fluid. The drive device with the shaft is designed to drive the impeller. The shaft housing is shaped to receive the shaft and/or the drive device. The sealing device comprises at least one casing sealing element and/or an impeller sealing element which is received between the drive device and the impeller and which is designed to prevent fluid from entering the drive device and/or the shaft casing during operation of the pump. ## Claims ### Claim at position 1 1-15. (canceled) ### Claim 16 A cardiac pump for delivering a fluid, the cardiac pump comprising: an impeller configured to convey the fluid; a drive comprising a shaft configured to drive the impeller; a shaft housing configured to receive the shaft; and at least one housing sealing element disposed between the shaft and the shaft housing and configured to prevent fluid from penetrating the shaft housing and the drive during operation of the cardiac pump, wherein the at least one housing sealing element comprises a closed side facing the impeller and an open side facing away from the impeller. ### Claim 17 (depends on 16) The cardiac pump according to claim 16, further comprising a spring configured to pre-load the at least one housing sealing element toward the shaft. ### Claim 18 (depends on 16) The cardiac pump according to claim 16, wherein the at least one housing sealing element is C-shaped. ### Claim 19 (depends on 16) The cardiac pump according to claim 16, wherein the at least one housing sealing element is fixed to an inner side of the shaft housing or is arranged around the shaft. ### Claim 20 (depends on 16) The cardiac pump according to claim 16, wherein the at least one housing sealing element comprises a sealing ring. ### Claim 21 (depends on 16) The cardiac pump according to claim 16, further comprising at least one bearing configured to support the shaft. ### Claim 22 (depends on 6) The cardiac pump according to claim 6, further comprising an at least one second housing sealing element arranged between the at least one housing sealing element and the at least one bearing. ### Claim 23 (depends on 16) The cardiac pump according to claim 16, wherein the at least one housing sealing element comprises a liquid or partially liquid medium. ### Claim 24 (depends on 16) The cardiac pump according to claim 16, wherein the shaft is straight. ### Claim 25 (depends on 16) The cardiac pump according to claim 16, wherein the shaft housing is tubular. ### Claim 26 (depends on 16) The cardiac pump according to claim 16, wherein the shaft housing is configured to receive a motor of the drive. ### Claim 27 (depends on 16) The cardiac pump according to claim 16, wherein the at least one housing sealing element comprises a rotary shaft seal. ### Claim 28 (depends on 16) The cardiac pump according to claim 16, wherein the at least one housing sealing element is made of an elastic material. ### Claim 29 (depends on 16) The cardiac pump according to claim 16, wherein the at least one housing sealing element is in contact with the shaft and the housing. ### Claim 30 A method of manufacturing a cardiac pump for delivering a fluid, the method comprising: providing an impeller configured to convey the fluid, a drive device with a shaft configured to drive the impeller, a shaft housing configured to receive the shaft, and at least one housing sealing element comprising a closed side and an open side; and assembling the impeller, the drive device, the shaft housing, and the at least one housing sealing element to produce the cardiac pump, wherein in the step of assembling the at least one housing sealing element is received between the shaft and the shaft housing to prevent fluid from entering at least one of the shaft housing or the drive device during operation of the cardiac pump, and wherein the closed side of the at least one housing sealing element faces the impeller and the open side of the at least one housing sealing element faces away from the impeller. ### Claim 31 (depends on 30) An apparatus configured to perform and/or control the steps of the method according to claim 30 in corresponding units. ### Claim 32 (depends on 30) A non-transitory computer-readable storage comprising instructions that, when executed, direct a processor to perform the method according to claim 30. ### Claim 33 (depends on 30) The method according to claim 30, wherein the at least one housing sealing element is C-shaped. ### Claim 34 (depends on 30) The method according to claim 30, further comprising arranging at least one second housing sealing element between the at least one housing sealing element and at least one bearing. ### Claim 35 (depends on 30) The method according to claim 30, wherein the shaft housing is configured to receive a motor of the drive device.