US 12,246,160 B2
Linear shuttle pump for drug delivery
Steven Cardinali, Tewksbury, MA (US); Daniel Allis, Boxford, MA (US); Ian Hanson, Wayne, PA (US); Maureen McCaffrey, Arlington, MA (US); and Chris Goetchius, San Diego, CA (US)
Assigned to Insulet Corporation, Acton, MA (US)
Filed by Insulet Corporation, Acton, MA (US)
Filed on Dec. 16, 2021, as Appl. No. 17/552,407.
Application 17/552,407 is a division of application No. 16/433,481, filed on Jun. 6, 2019, granted, now 11,229,736.
Claims priority of provisional application 62/681,165, filed on Jun. 6, 2018.
Prior Publication US 2022/0105260 A1, Apr. 7, 2022
Int. Cl. A61M 5/142 (2006.01); A61M 5/145 (2006.01); F04B 17/03 (2006.01)
CPC A61M 5/14212 (2013.01) [A61M 5/14244 (2013.01); A61M 5/1422 (2013.01); A61M 5/145 (2013.01); F04B 17/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A linear volume shuttle fluid pump, comprising:
a pump chamber component;
a piston positioned within the pump chamber component;
a chamber cap coupled to an end of the pump chamber component and positioned around the piston;
a piston crimp coupled to the piston;
a wire crimp coupled to the piston crimp; and
a shape memory alloy (SMA) wire coupled to the wire crimp.
 
11. A linear volume shuttle pump, comprising:
a guide component operable to pass a liquid drug;
a pump chamber component positioned with the guide component, wherein the pump chamber includes one or more openings;
a piston positioned within the pump chamber component;
a chamber cap coupled to an end of the pump chamber component and positioned around the piston;
a piston crimp coupled to the piston;
a wire crimp coupled to the piston crimp; and
a shape memory alloy (SMA) wire coupled to the wire crimp and operable to be activated and deactivated, wherein the SMA wire, when activated, is operable to:
pull the piston in a first direction toward the chamber cap to enable the liquid drug to enter a space created by the pulling of the piston in the first direction, wherein the created space is formed between the piston and the pump chamber component.