Disposable infusion device with dual valve system

• US 20090088694A1
• Filed: 09/28/2007
• Published: 04/02/2009
• Est. Priority Date: 09/28/2007
• Status: Active Grant

• Current Assignee: Calibra Medical, Inc. (CeQur SA)
• Original Assignee: Seattle Medical Technologies, Inc. (CeQur SA)
• Inventors: Carter, Brett J., Adams, John M.
• Granted Patent: US 8,226,607 B2
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 5/1424 Manually operated pumps
• 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

Abstract

A wearable infusion device comprises a first control movable between a first position and a second position that when in the first position, establishes a first fluid path between a reservoir and a pump and when in the second position, establishes a second fluid path between the pump and an outlet. A second control actuates the pump only when the second fluid path has been established by the first control.

Claims

1. A wearable infusion device comprising:

a reservoir that holds a liquid medicament;

an outlet port that delivers the liquid medicament to a patient;

a pump that holds a volume of the liquid medicament received from the reservoir and displaces substantially all of the volume of the liquid medicament when actuated;

a first control movable between a first position and a second position, the first control, when in the first position, establishing a first fluid path between the reservoir and the pump, and when in the second position, establishing a second fluid path between the pump and the outlet; and

a second control that actuates the pump only when the second fluid path has been established by the first control.

2. The device of claim 1, further comprising a first valve and a second valve operable by the first control for establishing the first and second fluid paths.

3. The device of claim 2, wherein the valves are arranged to preclude the valves from being concurrently opened.

4. The device of claim 3, further comprising a linkage between the valves that precludes the valves from being concurrently opened.

5. The device of claim 4, wherein the linkage is a toggle linkage.

6. The device of claim 5, wherein the toggle linkage is directly coupled to the first control.

7. The device of claim 2, wherein the first and second valves comprise a shuttle valve.

8. The device of claim 7, wherein the shuttle valve is directly coupled to the first control.

9. The device of claim 2, wherein the first and second valves are operable independently from the pump.

10. The device of claim 2, wherein the valves and the pump are operable solely by manual force applied to the first and second control.

11. The device of claim 2, wherein one of the first and second valves is a safety valve that provides a tighter closed seal with increased pressure from the reservoir.

12. The device of claim 11, wherein the one of the first and second valves is between the reservoir and the outlet.

13. The device of claim 1, wherein the pump is a piston pump comprising a piston and a cylinder and wherein the piston is directly coupled to the second control.

14. The device of claim 2, wherein one of the first and second valves provides a tighter closed seal with increased pressure from the pump.

15. A wearable infusion device comprising:

a reservoir that holds a liquid medicament;

an outlet port that delivers the liquid medicament to a patient;

a pump that holds a volume of the liquid medicament received from the reservoir and displaces substantially all of the volume of the liquid medicament when actuated;

a first valve between the reservoir and the pump;

a second valve between the outlet and the pump;

a first actuator that, when activated, closes the first valve and opens the second valve;

a second actuator that, when activated, actuates the pump; and

a linkage that precludes the second actuator from being activated until the first actuator is activated.

16. The device of claim 15, wherein the valves are arranged to preclude the valves from being concurrently opened.

17. The device of claim 16, further comprising a second linkage between the valves that precludes the valves from being concurrently opened.

18. The device of claim 17, wherein the second linkage is a toggle linkage.

19. The device of claim 15, wherein the first and second valves comprise a shuttle valve.

20. The device of claim 19, wherein the shuttle valve is directly coupled to the first actuator.

21. The device of claim 15, wherein the first and second valves are operable independently from the pump.

22. The device of claim 15, wherein the valves and the pump are operable solely by manual force applied to the first and second actuator.

23. The device of claim 15, wherein the second valve is a safety valve that provides a tighter closed seal with increased pressure from the reservoir.

24. The device of claim 15, wherein the pump is a piston pump comprising a piston and a cylinder and wherein the piston is directly coupled to the second actuator.

25. The device of claim 15, wherein the first valve provides a tighter closed seal with increased pressure from the pump.