Systems and methods for delivering medication
Systems and methods for delivering medication to a patient are disclosed. The system has a reservoir, a sequencer/monitor, and an insertion set which are mated during use.
1 . A method for dispensing medication, comprising:
storing medication in a reservoir;
storing energy in a storage device coupled to the reservoir;
applying the energy to the reservoir to transfer an amount of medication through an input valve to fill a metering reservoir having a predetermined volume, to transfer the predetermined volume of medication through an output valve and to transfer the predetermined volume of medication to a patient.
2 . The method of claim 1 , wherein the predetermined volume is user-adjustable.
3 . The method of claim 1 , comprising transferring the predetermined volume through a cannula assembly.
4 . The method of claim 1 , comprising delivering the medication across an input septum and storing the medication in a reservoir.
5 . The method of claim 1 , comprising filling the reservoir with medication using a syringe.
6 . The method of claim 1 , comprising storing sufficient mechanical energy to deliver one or more doses of medication.
7 . The method of claim 1 , comprising storing sufficient mechanical energy to provide a basil delivery.
8 . The method of claim 1 , comprising receiving a second medication at a receiving port.
9 . The method of claim 1 , comprising counting user actuations and displaying dispensed dosage.
10 . An apparatus for dispensing fluid, comprising:
a. a pressurized reservoir arranged to contain the fluid to be dispensed;
b. a metering chamber having a predetermined volume coupled to the pressurized reservoir;
c. an output interface in fluid communication with the metering chamber,
d. a cannula assembly coupled to the output interface, and
e. a sequencer coupled to the reservoir to cause the predetermined volume of the fluid to be transferred from the reservoir to the cannula assembly under reservoir pressure.
11 . The apparatus of claim 10 further comprising an input interface across which a fluid charge is received by the reservoir.
12 . The apparatus of claim 10 , further comprising a pressure source comprising one of a spring, a gas source, and a phase change material that pressurizes the reservoir.
13 . The apparatus of claim 10 , wherein the sequencer is arranged to be user actuated.
14 . The apparatus of claim 10 , wherein the metering chamber comprises first and second chambers, wherein alternately a flow of medication into one chamber drives medication from the other chamber into a patient.
15 . The apparatus of claim 10 , wherein the sequencer comprises one or more control valves coupled to the metering chamber to sequence fluid flow.
16 . The apparatus of claim 10 , wherein the cannula assembly comprises one of a cannula, a micro-needle, and a needle.
17 . The apparatus of claim 10 , wherein the reservoir has a storage volume, the reservoir further having a first configuration where the storage volume is maximized and a second configuration where the storage volume is minimized.
18 . The apparatus of claim 10 , comprising one or more valves associated with the metering chamber, the valves receiving power from the pressurized reservoir.
19 . The apparatus of claim 10 , further comprising a pressure source that pressurizes the reservoir and wherein the pressure source is arranged to be enabled from a user actuation.
20 . The apparatus of claim 19 , wherein the user actuation comprises one of mounting the reservoir on a patient, filling the reservoir, and actuating an interlocked user interface.