Patent ID: 11925790
Assignee: ELI LILLY AND COMPANY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A device for delivering a therapeutic fluid by chemical reaction, the device comprising:
a barrel having a first chamber containing a first reagent, a second chamber containing a second reagent and an absorbent powder, and a third chamber containing the therapeutic fluid;
a piston positioned between the first and second chambers of the barrel;
a plunger positioned between the second and third chambers of the barrel; and
an actuator configured to move the piston to place the first chamber in communication with the second chamber such that the first and second reagents react to form a liquid mixture and a gas, wherein at least a portion of the liquid mixture is absorbed by the absorbent powder, and wherein the gas drives the plunger to deliver the therapeutic fluid from the third chamber.