Systems and methods for delivering medication

• US 20090062768A1
• Filed: 08/29/2007
• Published: 03/05/2009
• Est. Priority Date: 08/29/2007
• Status: Abandoned Application

• Current Assignee: Calibra Medical, Inc. (CeQur SA)
• Original Assignee: Seattle Medical Technologies
• Inventors: Saul, Tom A.
• Application Number:
  US11/897,525
• Publication Number:
  US 20090062768A1
• Time in Patent Office: Days
• US Class Current: 604/506
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/145 using pressurised reservoirs, e.g. pressurised by means of pistons
• CPC Class Codes: A61M 5/16809 by repeated filling and emptying of an intermediate volume pressure infusion using positive displacement pumps A61M5/142
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/16877 Adjusting flow; Devices for setting a flow rate

Abstract

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.

Claims

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.