Micro piston pump
AssigneeInsulet Corporation
InventorsDaniel ALLIS, Ian MCLAUGHLIN, Kenneth Phillips
Life of this patent
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Abstract
A low-force, non-displacement, micro/miniature valve and/or pump assembly is provided. A tube component having a first side port coupled to an inlet portion and a second side port coupled to an outlet portion can be selectively moved to alternatively couple the side ports to a first or second piston pump chamber. First and second pistons can be actuated after positioning the tube component to either draw in fluid or push out fluid from either the first or second piston pump chambers during each actuation of the pistons. The fluid can be drawn in from a reservoir and can be expelled to a patient for providing a dose of the fluid to the patient.
Claims20
A drug delivery device, comprising:
- a reservoir configured to store a liquid drug;
- a fluid path component fluidly coupled to a cannula;
- and
- a pump assembly coupled to the reservoir and to the fluid path component, the pump assembly including:
- an actuator linkage (106), and
- a piston pump block (206) positioned between a first piston plate and a second piston plate, the piston pump block including a tube component (318) extending through the piston pump block, a first septum, and a second septum and positioned between a first piston and a second piston, wherein the tube component has a first side port, a second side port, and a center plug positioned between the first side port and the second side port.
Dependencies are inferred from the claim text.