Systems and methods for metered delivery of medication using stored energy
Systems and methods for storing and dispensing a fluid on-demand includes a reservoir; an energy storage device coupled to the reservoir to store energy, wherein the energy is mechanically generated by a user's action; a cannula assembly adapted to be positioned on a patient and coupled to the reservoir prior to use; and a sequencer coupled to the reservoir and the energy storage device to allow the fluid to be dispensed upon command.
1 . An apparatus to store and dispense a fluid on-demand, comprising:
a reservoir;
an energy storage device coupled to the reservoir to store energy, wherein the energy is mechanically generated by a user's action;
a cannula assembly adapted to be positioned on a patient and coupled to the reservoir prior to use; and
a sequencer coupled to the reservoir and the energy storage device to allow the fluid to be dispensed upon command.
2 . The apparatus of claim 1 , comprising a metering assembly coupled to the reservoir.
3 . The apparatus of claim 2 , wherein the metering assembly comprises:
a. an input valve;
b. a metering chamber coupled to the input valve; and
c. an output valve coupled to the metering chamber.
4 . The apparatus of claim 1 , wherein the reservoir is configured as a ring.
5 . The apparatus of claim 4 , wherein the reservoir comprises a rolling bellows.
6 . The apparatus of claim 1 , comprising a metering assembly coupled to the reservoir, wherein the metering assembly is encircled by the reservoir.
7 . The apparatus of claim 1 , wherein the energy storage device stores energy when the reservoir is filled or when the reservoir is placed on the patient.
8 . The apparatus of claim 1 , wherein the energy storage device comprises a spring wound or compressed by the user's action.
9 . The apparatus of claim 1 , comprising an interlocked user interface adapted to be actuated by a user.
10 . The apparatus of claim 9 , wherein the interlocked user interface comprises an energy delivery button and an energy release button.
11 . The apparatus of claim 10 , wherein the energy delivery button charges an energy storage device.
12 . The apparatus of claim 10 , wherein the energy delivery button winds or compresses a spring.
13 . The apparatus of claim 10 , wherein the release button allows energy to be discharged from a dispensing energy storage device to dispense the fluid.
14 . The apparatus of claim 9 , comprising:
a. an energy delivery button to wind a spring;
b. a release button to allow energy to be released from the spring; and
c. a metering assembly coupled to the reservoir, wherein the metering assembly comprises:
i. an input valve;
ii. a metering chamber coupled to the input valve; and
iii. an output valve coupled to the metering chamber,
wherein the spring provides energy to actuate each valve in a predetermined sequence to dispense the fluid.
15 . The apparatus of claim 14 , wherein the spring provides energy to activate the metering chamber.
16 . The apparatus of claim 14 , comprising a metering spring to provide energy to activate the metering chamber.
17 . The apparatus of claim 1 , comprising a dispensing feedback unit to indicate fluid dispensing.
18 . The apparatus of claim 1 , wherein the cannula assembly comprises one of: a cannula, a micro-needle, a needle.
19 . The apparatus of claim 1 , comprising a receiving port to receive a second medication.
20 . An apparatus to store and dispense a fluid on-demand, comprising:
a reservoir;
a metering assembly coupled to and powered by the reservoir;
an energy storage device coupled to the reservoir to store energy, wherein the energy is mechanically generated by a user's action;
a cannula assembly adapted to be positioned on a patient and coupled to the reservoir prior to use; and
a sequencer coupled to the reservoir, the metering assembly, and the energy storage device to control fluid dispensing upon command.