Infusion device capable of providing multiple liquid medicaments

• US 20070299398A1
• Filed: 02/12/2007
• Published: 12/27/2007
• Est. Priority Date: 03/16/2006
• Status: Abandoned Application

• Current Assignee: Calibra Medical, Inc. (CeQur SA)
• Original Assignee: Seattle Medical Technologies
• Inventors: Adams, John, Hawkins, Daniel, Alferness, Clifton
• Application Number:
  US11/705,813
• Publication Number:
  US 20070299398A1
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 2005/1405 Patient controlled analgesia [PCA]
• CPC Class Codes: A61M 2005/1426 with means for preventing access to the needle after use
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 2025/0266 using pads, patches, tapes or the like
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/14526 the piston being actuated by fluid pressure
• CPC Class Codes: A61M 5/1454 spring-actuated, e.g. by a clockwork
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28

Abstract

A disposable infusion device comprises a base arranged to adhere to a patient'"'"'s skin and a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient. The device further includes a first source arranged to provide the cannula with a first liquid medicament and a second source arranged to provide the cannula with a second liquid medicament.

Claims

1. A disposable infusion device comprising:

a base arranged to adhere to a patient'"'"'s skin;

a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient;

a first source arranged to provide the cannula with a first liquid medicament; and

a second source arranged to provide the cannula with a second liquid medicament.

2. The device of claim 1, wherein one of the first and second sources is arranged to provide its liquid medicament in fixed volume increments.

3. The device of claim 2, wherein the one of the first and second sources includes a reservoir for holding the liquid medicament and a fixed volume pump that delivers the liquid medicament to the cannula in the fixed volume increments.

4. The device of claim 3, wherein the fixed volume pump comprises a piston pump.

5. The device of claim 3, wherein the fixed volume pump comprises a dome pump.

6. The device of claim 3, wherein the fixed volume pump comprises a squeezable tube.

7. The device of claim 1, wherein one of the first and second sources comprises a reservoir.

8. The device of claim 7, wherein the first source comprises a reservoir and a pump and wherein the second source includes a port.

9. The device of claim 8, wherein the port is arranged to communicate with the cannula and to receive the second liquid medicament from an instrument external to the device.

10. The device of claim 7 wherein the one of the first and second sources includes a pump communicating with the reservoir and arranged to deliver the liquid medicament to the cannula and a mechanical motor that drives the pump.

11. The device of claim 10, wherein the motor includes a wind-up spring.

12. The device of claim 7 wherein the one of the first and second sources includes a pump and a fill port communicating with the reservoir to enable the reservoir to be filled by an instrument external to the device.

13. The device of claim 7, wherein the reservoir is formed of flexible material.

14. The device of claim 1, wherein the first source comprises a first reservoir, wherein the second source comprises a second reservoir, and wherein the device further includes a valve that selectively communicates the first reservoir with the cannula or the second reservoir with the cannula.

15. The device of claim 1, wherein the first source comprises a first reservoir arranged to hold the first liquid medicament and a first pump arranged to deliver the first liquid medicament to the cannula, and wherein the second source comprises a second reservoir arranged to hold the second liquid medicament and a second pump arranged to deliver the second liquid medicament to the cannula.

16. The device of claim 1, wherein one of the first and second sources is arranged to provide its associated liquid medicament at a substantially constant rate.

17. The device of claim 16, further comprising a rate adjuster that renders the substantially constant rate adjustable.

18. The device of claim 1, wherein one of the first and second sources includes a replaceable reservoir.

19. A disposable infusion device comprising:

a base arranged to adhere to a patient'"'"'s skin;

a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient;

a first source arranged to provide the cannula with a first liquid medicament; and

a second source arranged to provide the cannula with a second liquid medicament,

wherein the first source is a reservoir and a pump that pumps the first liquid medicament from the reservoir to the cannula, and

wherein the second source is a port that receives the second liquid medicament form an instrument external to the device and conveys the second liquid medicament to the cannula.

20. The device of claim 19, wherein the pump is a fixed volume pump that delivers the liquid medicament to the cannula in fixed volume increments.

21. The device of claim 20, wherein the fixed volume pump comprises a piston pump.

22. The device of claim 20, wherein the fixed volume pump comprises a dome pump.

23. The device of claim 20, wherein the fixed volume pump comprises a squeezable tube.

24. A disposable infusion device comprising:

a base arranged to adhere to a patient'"'"'s skin;

a cannula arranged to extend from the base to beneath the patient'"'"'s skin to deliver a liquid medicament to the patient;

a first source arranged to provide the cannula with a first liquid medicament;

a second source arranged to provide the cannula with a second liquid medicament,

wherein the first source is a first reservoir that holds the first liquid medicament,

wherein the second source is a second reservoir that holds the second liquid medicament; and

a pump that pumps the first and/or second liquid to the cannula.

25. The device of claim 24, wherein the pump is a single pump communicating with the cannula and wherein the device further includes a valve that selectively couple the first and second reservoirs to the pump.

26. The device of claim 24, wherein the pump comprises a first pump that pumps the first liquid medicament from the first reservoir to the cannula and a second pump that pumps the second liquid medicament from the second reservoir to the cannula, and wherein the device further includes a valve that selectively couples the first pump and the second pump to the cannula.