Patch-sized fluid delivery systems and methods
First Claim
1. A delivery device for delivering an infusion medium to a user, the device comprising:
- a first housing portion adapted to be secured to a user comprising a reservoir wherein the reservoir is formed by the first housing portion;
a second housing portion configured to be selectively engaged with and disengaged from the first housing portion to allow disposal of the first housing portion without disposing of the second housing portion;
a lever supported by the first housing portion for movement in a generally linear dimension;
a shape-memory actuator supported by the first housing portion to selectively move the lever in the generally linear dimension; and
a pumping assembly supported by the first housing portion, the pumping assembly comprising;
a barrel having a generally linear, longitudinal axis, a port in fluid flow communication with the barrel and configured for connection to the reservoir, and an outlet port in fluid flow communication with the barrel and configured for connection in fluid flow communication with an injection site;
a plunger located in the barrel the plunger having a surface for operable engagement with the lever when the second housing portion and first hosing portion are engaged,wherein the plunger is moveable with movement of the lever along the longitudinal axis of the barrel between fill and dispense positions.
1 Assignment
0 Petitions
Accused Products
Abstract
A patch-sized fluid delivery device may include a reusable portion and a disposable portion. The disposable portion may include components that come into contact with the fluid, while the reusable portion may include only components that do not come into contact with the fluid. Redundant systems, such as redundant controllers, power sources, motor actuators, and alarms, may be provided. Alternatively or additionally, certain components can be multi-functional, such a microphones and loudspeakers that may be used for both acoustic volume sensing and for other functions and a coil that may be used as both an inductive coupler for a battery recharger and an antenna for a wireless transceiver. Various types of network interfaces may be provided in order to allow for remote control and monitoring of the device.
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Citations
8 Claims
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1. A delivery device for delivering an infusion medium to a user, the device comprising:
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a first housing portion adapted to be secured to a user comprising a reservoir wherein the reservoir is formed by the first housing portion; a second housing portion configured to be selectively engaged with and disengaged from the first housing portion to allow disposal of the first housing portion without disposing of the second housing portion; a lever supported by the first housing portion for movement in a generally linear dimension; a shape-memory actuator supported by the first housing portion to selectively move the lever in the generally linear dimension; and a pumping assembly supported by the first housing portion, the pumping assembly comprising; a barrel having a generally linear, longitudinal axis, a port in fluid flow communication with the barrel and configured for connection to the reservoir, and an outlet port in fluid flow communication with the barrel and configured for connection in fluid flow communication with an injection site; a plunger located in the barrel the plunger having a surface for operable engagement with the lever when the second housing portion and first hosing portion are engaged, wherein the plunger is moveable with movement of the lever along the longitudinal axis of the barrel between fill and dispense positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification