US 12,070,743 B2
Displacement device and method for displacing fluid volumes
Philipp Ott, Steg (CH); Adrian Sager, Mannedorf (CH); and Thomas Geiges, Mannedorf (CH)
Assigned to TECAN TRADING AG, Mannedorf (CH)
Appl. No. 17/626,385
Filed by TECAN TRADING AG, Mannedorf (CH)
PCT Filed Jul. 29, 2020, PCT No. PCT/EP2020/071425
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/018977, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 19189463 (EP), filed on Jul. 31, 2019.
Prior Publication US 2022/0258152 A1, Aug. 18, 2022
Int. Cl. B01L 3/02 (2006.01)
CPC B01L 3/0231 (2013.01) [B01L 2200/02 (2013.01); B01L 2400/0478 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A pipetting system comprising a pipetting device (60) and a displacement device (1),
wherein said pipetting device (60) is in particular an air pipetting device or a fluid pipetting device or a VCP pipetting device,
wherein said displacement device (1) comprises
a first fluid space (11) separated into a first chamber (111) and a second chamber (112) by a first piston displacement area (A1) of a first piston (21) arranged in a movable manner within said first fluid space (11), wherein said first piston (21) provides for a fluid-sealing separation of said first chamber (111) and said second chamber (112) of said first fluid space (11), said first chamber (111) of said first fluid space (11) being connectable to said pipetting device, and said first piston (21) being actuatable by an actuation volume (Va) of working fluid of said pipetting device; and
a second fluid space (12) separated into a first chamber (121) and a second chamber (122) by a second piston displacement area (A2) of a second piston (22) arranged in a movable manner within said second fluid space (12), wherein said second piston (22) provides for a fluid-sealing separation of said first chamber (121) and said second chamber (122) of said second fluid space (12) at the same time that said first piston (21) provides for the fluid-sealing separation of said first chamber (111) and said second chamber (112) of said first fluid space (11), said second piston (22) being constructed to displace a displacement volume (Vd) of a fluid located within said second chamber (122) of said second fluid space (12) when being actuated in dependence on said first piston (21) being actuated by said actuation volume (Va);
wherein said actuation volume (Va) is different from said displacement volume (Vd), and
wherein said displacement device (1) is connected to said pipetting device (60), in particular by means of removable sticking to a pipette tube of said pipetting device.