US 12,403,464 B2
Integrated motor cassette for connection to and for use in a pipetting system, pipetting system, and method for exchanging an integrated motor cassette of a pipetting system
Hanspeter Romer, Hinwil (CH); Fridolin Gysel, Adliswil (CH); Silvio Walpen, Thalwil (CH); and Reto Ettinger, Uster (CH)
Assigned to HAMILTON BONADUZ AG, Bonaduz (CH)
Appl. No. 16/630,334
Filed by HAMILTON BONADUZ AG, Bonaduz (CH)
PCT Filed Jul. 2, 2018, PCT No. PCT/EP2018/067822
§ 371(c)(1), (2) Date Feb. 26, 2020,
PCT Pub. No. WO2019/011698, PCT Pub. Date Jan. 17, 2019.
Claims priority of application No. 102017115796.4 (DE), filed on Jul. 13, 2017.
Prior Publication US 2020/0298225 A1, Sep. 24, 2020
Int. Cl. B01L 3/02 (2006.01); G01N 35/04 (2006.01); G01N 35/10 (2006.01)
CPC B01L 3/0227 (2013.01) [G01N 35/04 (2013.01); G01N 35/10 (2013.01); B01L 2200/025 (2013.01); B01L 2400/043 (2013.01); G01N 2035/0477 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An integrated motor cartridge for connection to and for use in a pipetting system, comprising:
a guide tube;
a piston provided with a plurality of permanent magnets, the piston having a pressure tube facing side and a pressure tube distal side, wherein the piston is arranged in the guide tube and has at least one seal with respect to the guide tube;
a coil assembly by means of which the piston can be moved in the guide tube when current is supplied to the coil assembly,
a housing, wherein the guide tube, the piston and the coil assembly are arranged in the housing;
a plurality of magnetic field sensors arranged within the housing along the guide tube for determining the position of the piston;
a non-transitory memory element arranged within the housing, the memory element having calibration data stored thereon, the calibration data describing a correlation between measured values of the magnetic field sensors and the position of the piston;
a pressure tube connection by means of which the guide tube, on the pressure tube facing side, can be connected in a gastight manner to a pressure tube of the pipetting system;
a power connection coupled to the coil assembly and adapted to be coupled to a power supply arranged outside of the integrated motor cartridge; and
a cooling duct arranged within the housing along the guide tube and having a first opening through the housing on the pressure tube facing side of the housing and a second opening through the housing on the pressure tube distal side of the housing,
wherein the integrated motor cartridge can be introduced into and removed from the pipetting system as a unit.