DISPOSABLE INFUSION DEVICE WITH RESETTABLE LAST DOSE LOCK-OUT

• US 20100286602A1
• Filed: 05/05/2009
• Published: 11/11/2010
• Est. Priority Date: 05/05/2009
• Status: Active Grant

• Current Assignee: Calibra Medical, Inc. (CeQur SA)
• Original Assignee: Calibra Medical, Inc. (CeQur SA)
• Inventors: Carter, Brett J., Adams, John M.
• Granted Patent: US 7,976,493 B2
• Time in Patent Office: Days
• US Class Current: 604/67
• CPC Class Codes: A61M 2039/0205 for injecting media
• CPC Class Codes: A61M 5/1424 Manually operated pumps
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/16854 by monitoring line pressure

Abstract

A wearable infusion device comprises a reservoir that holds a liquid medicament, an outlet that delivers the liquid medicament to a patient, and a pump that displaces a volume of the liquid medicament to the outlet when actuated. The device further includes a lock-out that disables actuation of the device responsive to a predetermined condition of the device. The lock-out is resettable.

Claims

1. A wearable infusion device comprising:

a reservoir that holds a liquid medicament;

an outlet that delivers the liquid medicament to a patient;

a pump that displaces a volume of the liquid medicament to the outlet when actuated; and

a lock-out that disables actuation of the device responsive to a predetermined condition of the device, the lock-out being resettable.

2. The device of claim 1, wherein the lock out is a last dose lock-out.

3. The device of claim 1, wherein the predetermined condition of the device is the reservoir being substantially empty.

4. The device of claim 3, further comprising a fill port communicating with the reservoir to permit liquid medicament to be introduced into the reservoir and wherein the lock-out is resettable through the fill port.

5. The device of claim 1, further comprising a control that actuates the pump and wherein the lock-out disables the control.

6. The device of claim 1, wherein the lock-out includes a pressure sensor and the predetermined condition is a reduced pressure sensed by the pressure sensor.

7. The device of claim 6, wherein the reduced pressure is below ambient pressure.

8. The device of claim 6, wherein the reduced pressure is less than a predetermined pressure below ambient pressure.

9. The device of claim 6, wherein the pump produces the reduced pressure when the reservoir is empty.

10. The device of claim 9, wherein the pump is a piston pump.

11. The device of claim 10, wherein the piston pump produces the reduced pressure during a recharge stroke when the reservoir is empty.

12. The device of claim 11, further comprising a fill port communicating with the reservoir to permit liquid medicament to be introduced into the reservoir and wherein the reduced pressure is releasable to reset the lock-out by venting the fill port.

13. The device of claim 11, further comprising a fill port communicating with the reservoir to permit liquid medicament to be introduced into the reservoir and wherein the reduced pressure is releasable to reset the lock-out by venting the fill port and actuating the piston pump through a recharge cycle.

14. The device of claim 6, wherein the pressure sensor is between the pump and the reservoir.

15. A wearable infusion device comprising:

a reservoir that holds a liquid medicament;

an outlet that delivers the liquid medicament to a patient;

a pump that displaces a volume of the liquid medicament to the outlet when actuated; and

a lock-out including a pressure sensor that disables actuation of the device responsive to the pressure sensor sensing a reduced pressure, the reduced pressure being releasable to reset the lock out.

16. The device of claim 15, wherein the pump produces the reduced pressure when the reservoir is empty.

17. The device of claim 16, wherein the pump is a piston pump.

18. The device of claim 17, wherein the piston pump produces the reduced pressure during a recharge stroke when the reservoir is empty.

19. The device of claim 18, further comprising a fill port communicating with the reservoir to permit liquid medicament to be introduced into the reservoir and wherein the reduced pressure is releasable to reset the lock-out by venting the fill port.

20. The device of claim 18, further comprising a fill port communicating with the reservoir to permit liquid medicament to be introduced into the reservoir and wherein the reduced pressure is releasable to reset the lock-out by venting the fill port and actuating the piston pump through a recharge cycle.

21. The device of claim 15, wherein the pressure sensor is between the pump and the reservoir.

22. A wearable infusion device comprising:

a reservoir that holds a liquid medicament;

a fill port permitting a medicament to be introduced into the reservoir;

an outlet that delivers the liquid medicament to a patient;

a piston pump that displaces a volume of the liquid medicament to the outlet when actuated, the piston pump being operable through a recharge cycle and producing a reduced pressure during the recharge cycle when the reservoir is empty; and

a lock-out including a pressure sensor that disables actuation of the device responsive to the pressure sensor sensing the reduced pressure, the reduced pressure being releasable through the fill port to reset the lock-out.