US 10,376,635 B2
Drug infusion system and method
James M. Haase, Maplewood, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Mar. 5, 2018, as Appl. No. 15/912,024.
Application 15/912,024 is a division of application No. 14/301,909, filed on Jun. 11, 2014, granted, now 9,974,901.
Prior Publication US 2018/0193556 A1, Jul. 12, 2018
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/00 (2006.01); A61M 5/142 (2006.01); A61M 5/145 (2006.01)
CPC A61M 5/14276 (2013.01) [A61M 5/1452 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An actuator for an infusion drive mechanism, the actuator comprising: a piston defining a first axis and being movable within a passageway of the infusion drive mechanism to convey at least one infusion medium, the passageway defining a longitudinal axis; a pole being connected to the piston and defining at least one cavity disposed adjacent to and non-concentric with the piston; and a biasing member located within the at least one cavity and engaged with a surface of the infusion drive mechanism to orient the first axis transverse relative to the longitudinal axis.