IP Library › Patent Application 16035259
Patent Application
App. No. 16/035,259

INTRADERMAL INJECTION DEVICE

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Quick Facts
Patent No.
US None
App. No.
16/035,259
Abstract

Embodiments herein relate to the field of injections, for instance needle-free injections, and more specifically, to methods and apparatus for spring-driven intramuscular and intradermal injections. Provided in some embodiments are needle-free injectors adapted to deliver intradermal injections, as well as vial adaptors that are adapted to function as spacers when used with a needle-free injection device.

Claims (10)

1 .- 19 . (canceled)

20 . A needle-free injection device, comprising:

a body terminating in a nozzle;

a fluid reservoir housed within the body, the fluid reservoir being adapted to receive a fluid injectate;

a plunger disposed within the fluid reservoir;

a shaft to which the plunger is mounted such that when the shaft is driven forward, the plunger is responsively driven forward;

a spring-driven propulsion system having a first spring adapted to apply force to the shaft and thus to the plunger to cause ejection of the fluid injectate through the nozzle;

a lever adapted to arm the spring-driven propulsion system;

a rod extending between the lever and the shaft to transmit force between the lever and the shaft via the body of the rod to compress the first spring; and

a second spring in operable communication with the lever, the second spring configured to bias the lever towards a home position.