DISPOSABLE PUMP RESERVOIR AND RELATED METHODS

• US 20090287180A1
• Filed: 05/19/2009
• Published: 11/19/2009
• Est. Priority Date: 05/19/2008
• Status: Abandoned Application

• Current Assignee: Tandem Diabetes Care Incorporated
• Original Assignee: Tandem Diabetes Care Incorporated
• Inventors: DiPerna, Paul M.
• Application Number:
  US12/468,795
• Publication Number:
  US 20090287180A1
• Time in Patent Office: Days
• US Class Current: 604/500
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 5/1483 using flexible bags externally pressurised by fluid pressure
• CPC Class Codes: A61M 5/16831 Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066

Abstract

A device comprises a reusable and a disposable comprising at least one first chamber holding a flow material and a second chamber holding a gas. The disposable is removable from the reusable and maintains sterility when removed from the reusable. Flow metering device provide safety and allow for variably stroke frequency thereby modulating flow rate.

Claims

1. A device comprising:

a reusable having at least one pressure sensor;

a disposable comprising at least one first chamber and at least one second chamber holding a pressurized gas; and

a slideable metering device;

wherein the disposable is removable from the reusable and maintains sterility when removed from the reusable and wherein when the disposable is interconnected with the reusable, the at least one second chamber is in fluid communication with the sensors.

2. The device of claim 1, wherein the slideable metering device comprises a plurality of chambers having a compressible member for receiving aliquots of flow material.

3. The device of claim 1, wherein the disposable assembly is disposed to receive disposable batteries.

4. The device of claim 1, wherein the device arrests flow when the disposable is disconnected from the reusable.

5. The device of claim 1, wherein the first chamber comprises a bag.

6. The device of claim 1, wherein the flow rate of the flow material is adjustable by changing the frequency of each stroke of the slideable metering device.

7. The device of claim 1, further comprising hardware on the reusable that calculates the flow rate of the flow material by determine the change in volume of the first chamber over a period of time;

wherein the data from the sensor is used to calculate the change in volume of the first chamber.

8. A device comprising:

a reusable having at least one pressure sensor; and

a disposable comprising at least one first chamber holding a flow material a second chamber, and a third chamber holding a pressurized gas; and

wherein the first chamber and second chamber are configured such that when the pressure in the second chamber increases, the volume of the second chamber increases and the volume of the third chamber decreases proportionally;

wherein the disposable is removable from the reusable and maintains sterility when removed from the reusable and wherein when the disposable is interconnected with the reusable, the at least one second chamber is in fluid communication with the sensors.

9. The device of claim 8, further comprising a valve assembly to communicate pressure between the first chamber and the second chamber.

10. A method comprising:

providing an infusion pump having a reusable having at least one pressure sensor;

a disposable comprising at least one first chamber and at least one second chamber holding a pressurized gas; and

a slideable metering device;

wherein the disposable is removable from the reusable and maintains sterility when removed from the reusable and wherein when the disposable is interconnected with the reusable, the at least one second chamber is in fluid communication with the sensors.

11. The method of claim 10, wherein the slideable metering device comprises a plurality of chambers having a compressible member for receiving aliquots of flow material.

12. The method of claim 10, wherein the disposable assembly is disposed to receive disposable batteries.

13. The method of claim 10, wherein the device arrests flow when the disposable is disconnected from the reusable.

14. The method of claim 10, where the first chamber comprises a bag.

15. The device of claim 10, wherein the flow rate of the flow material is adjustable by changing the frequency of each stroke of the slideable metering device.

16. The device of claim 10, further comprising hardware on the reusable that calculates the flow rate of the flow material by determine the change in volume of the first chamber over a period of time;

wherein the data from the sensor is used to calculate the change in volume of the first chamber.