US 12,005,230 B2
Drive unit for a liquid handling device and liquid handling device
Michael Harms, Frankfurt am Main (DE)
Assigned to Sanofi, Paris (FR)
Appl. No. 17/054,378
Filed by SANOFI, Paris (FR)
PCT Filed May 13, 2019, PCT No. PCT/EP2019/062136
§ 371(c)(1), (2) Date Nov. 10, 2020,
PCT Pub. No. WO2019/219564, PCT Pub. Date Nov. 21, 2019.
Claims priority of application No. 18305593 (EP), filed on May 15, 2018.
Prior Publication US 2021/0220554 A1, Jul. 22, 2021
Int. Cl. A61M 5/145 (2006.01); A61M 5/142 (2006.01)
CPC A61M 5/14566 (2013.01) [A61M 5/14248 (2013.01); A61M 2005/14268 (2013.01); A61M 2205/8206 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A drive unit for a medical device, comprising:
a drive unit housing;
a drive member retained in the drive unit housing and movable relative to the drive unit housing to drive an operation of the medical device, the drive member comprising a coupler output portion configured to be operatively connected to a liquid handling unit;
a drive mechanism retained in the drive unit housing, wherein the drive mechanism is coupleable to the drive member via a mechanism interface and configured to transfer a driving force or torque to the drive member; and
a sealing member configured to establish a sealed interface with the drive member, the drive member being movable relative to the sealing member from a first position to a second position, and a tightness of the sealed interface being different in the first position than in the second position, wherein the sealed interface defines a sealed section of an interior of the drive unit housing,
wherein the mechanism interface is arranged within the sealed section and the coupler output portion is arranged outside of the sealed section.