Method of manufacturing a pump, fluid pump, and dialysis machine
OwnerTobias Wuerschmidtinventor
Life of this patent
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Abstract
A method of manufacturing pumps of different performances for use in a blood treatment device, preferably a dialysis machine, having a pump housing or a pump housing portion for supportingly holding two gear wheels in meshing engagement. The method includes the step of primary shaping of a universal pump housing blank with all features common to the different pumps as well as with such oversizes as to allow machining for manufacturing all different pumps from the same primary-shaped pump housing blank. The method also includes the step of individualizing the universal pump housing blank by machining in the region of the oversizes to achieve the respective performance.
Claims20
A method of manufacturing pumps, each pump having a unique performance for use in a blood treatment device having a pump housing or a pump housing portion for supportingly holding gear wheels in meshing engagement, the method comprising the steps of:
- primary shaping of a universal pump housing blank or a universal pump housing portion blank with housing features common to the pumps and with an oversize to allow machining for manufacturing the pumps from the primary-shaped universal pump housing blank or the universal pump housing portion blank;
- and
- individualizing the universal pump housing blank or the universal pump housing portion blank by machining in a region of the oversize to achieve the unique performance.
A method of manufacturing a degassing pump comprising the following steps:
- primary shaping of a universal pump housing blank or a universal pump housing portion blank;
- milling of a gear wheel contact surface, bearing fits and a sealing surface into the primary shaped universal pump housing blank or the universal pump housing portion blank;
- thread cutting of threads for a separating can;
- and
- drilling of a receiving pocket for gear wheels.
A method of manufacturing a pump, the pump being a dialysis fluid inlet pump for a dialysis machine, the method comprising the following steps:
- primary shaping of a universal pump housing blank or a universal pump housing portion blank for the pump;
- milling of a gear wheel contact surface, bearing fits and a sealing surface into the primary shaped universal pump housing blank or the universal pump housing portion blank;
- thread cutting of threads for a separating can;
- drilling of a receiving pocket for gear wheels;
- and
- boring of channels for a check valve between the receiving pocket and an outer side of the pump.
Dependencies are inferred from the claim text.