Pump for delivering a fluid and method of manufacturing a pump
AssigneeKardion GmbH
InventorIngo Stotz
Life of this patent
Estimating the term…
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.
Claims18
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;
- a plurality of spacing elements disposed between the shaft and the shaft housing;
- and
- at least one housing sealing element disposed between the shaft and the shaft housing and configured to prevent the 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 and facing the plurality of spacing elements, the open side defined by:
- an inner wall adjacent to the shaft;
- and
- an outer wall adjacent to the shaft housing.
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, a plurality of spacing elements disposed between the shaft and the shaft housing, and at least one housing sealing element comprising a closed side, and an open side, the open side defined by an inner wall adjacent to the shaft and an outer wall adjacent to the shaft housing;
- 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 the 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 and faces the plurality of spacing elements.
Dependencies are inferred from the claim text.