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 |
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. |