Patent ID: 11918778
Assignee: INNOVATIVE HEALTH STRATEGIES LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A wearable device for automatically injecting a fluid into a wearer of the wearable device, the wearable device comprising, in combination:
an enclosure including a base portion, and top portion closing a top of the base portion;
an attachment for securing the enclosure to the wearer;
a fluid cylinder within the base portion of the enclosure and having an open top closed by the top portion of the enclosure;
an injection cylinder within the base portion of the enclosure and having an open top closed by the top portion of the enclosure;
a fluid piston within the fluid cylinder configured for longitudinal movement within the fluid cylinder;
an injection piston within the injection cylinder configured for longitudinal movement within the injection cylinder;
a passage connecting the fluid cylinder above the fluid piston with the injection cylinder above the injection piston;
at least one hypodermic needle carried by the injection piston for insertion into the wearer;
wherein the injection piston divides the injection cylinder into a first portion containing the fluid to be injected and a second portion containing an insertion end of the at least one hypodermic needle;
wherein the fluid piston divides the fluid cylinder into a first portion containing the fluid to be injected and a second portion;
a valve member located within the first portion of the injection cylinder containing the fluid to be injected and blocking flow of the fluid to be injected to the at least one hypodermic needle; and
at least one tether secured to the valve member to limit movement of the valve member so that the valve member permits flow of the fluid to be injected from the injection cylinder above the injection piston to the at least one hypodermic needle when the injection piston moves a distance adequate to insert the at least one hypodermic needle into the wearer.