US 12,766,248 B2 · Dispensing device for wearable drug delivery device

Abstract

Embodiments of the present disclosure relate to techniques, processes, devices or systems for pump devices for providing a fixed volume of fluid, which is delivered and refilled within one pumping cycle. In one approach, a wearable drug delivery device may include a reservoir for storing a liquid drug, and a delivery pump device including a drive mechanism coupled to the reservoir. The drive mechanism may include a housing having a pump chamber fluidly connected with a channel chamber, an inlet channel operable to deliver the liquid drug from the reservoir to the channel chamber, and an outlet channel operable to expel the liquid drug from the channel chamber. The drive mechanism may further include a resilient sealing member sealing the pump chamber, and a plunger adjacent the resilient sealing member, wherein the plunger is operable to enter the pump chamber to displace the liquid drug from the pump chamber.

Claims17

Dependent claims

A wearable therapeutic agent delivery device, comprising:

a reservoir configured to store a liquid therapeutic agent;
a delivery pump device including a drive mechanism coupled to the reservoir for receiving the liquid therapeutic agent, the drive mechanism comprising:
a housing comprising:
a pump chamber fluidly connected with a channel chamber;
an inlet channel operable to deliver the liquid therapeutic agent from the reservoir to the channel chamber;
and
an outlet channel operable to expel the liquid therapeutic agent from the channel chamber;
a resilient sealing member sealing the pump chamber;
a plunger operable to enter the pump chamber to displace the liquid therapeutic agent from the pump chamber;
a second resilient sealing member positioned within the channel chamber, wherein the second resilient sealing member is operable to seal the inlet channel and the outlet channel;
and
a switching device, wherein in a first position the switching device biases the second resilient sealing member against an entrance of the inlet channel, and wherein in a second position the switching device biases the second resilient sealing member against an entrance of the outlet channel.

9 more elements

A method, comprising:

coupling a drive mechanism to a reservoir configured to store a liquid therapeutic agent, the drive mechanism comprising:
a housing comprising:
a pump chamber fluidly connected with a channel chamber;
an inlet channel operable to deliver the liquid therapeutic agent from the reservoir to the channel chamber;
an outlet channel operable to expel the liquid therapeutic agent from the channel chamber;
a resilient sealing member sealing the pump chamber;
a plunger operable to enter the pump chamber to displace the liquid therapeutic agent from the pump chamber;
a second resilient sealing member positioned within the channel chamber, wherein the second resilient sealing member is operable to seal the inlet channel and the outlet channel;
and
a switching device, wherein in a first position the switching device biases the second resilient sealing member against an entrance of the inlet channel, and wherein in a second position the switching device biases the second resilient sealing member against an entrance of the outlet channel;
and
biasing the plunger into the pump chamber to displace the liquid therapeutic agent from the pump chamber.

9 more elements

Dependencies are inferred from the claim text.

Dispensing device for wearable drug delivery device

Life of this patent

Dispensing device for wearable drug delivery device

Life of this patent

Abstract

Claims17