Systems and methods for reservoir filling

• US 8,434,528 B2
• Filed: 04/29/2008
• Issued: 05/07/2013
• Est. Priority Date: 04/30/2007
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Ibranyan, Arsen, Kavazov, Julian D., Hezzell, David, Griffin, Christopher G., Shen, Benjamin X., Lee, Mike, Miller, Thomas
• Primary Examiner(s): Niesz, Jason K
• Application Number:
  US12/111,751
• Publication Number:
  US 20080269680A1
• Time in Patent Office: 1,834 Days
• Field of Search: 222/394, 222/386, 222/386.5, 141/2, 141/18, 141/23, 141/24, 141/25, 141/285, 141/329, 141/330
• US Class Current: 141/18
• CPC Class Codes: A61J 1/20 Arrangements for transferring or mixing fluids, e.g. from vial to syringe
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2013 having two piercing ends
• CPC Class Codes: A61J 1/2062 with directional valves
• CPC Class Codes: A61J 1/2075 for external venting
• CPC Class Codes: A61J 1/2089 Containers or vials which are to be joined to each other in order to mix their contents combinations of vial and syringe for mixing their contents A61J1/2096
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2209/045 for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/165 Filtering accessories, e.g. blood filters, filters for infusion liquids A61M1/14 , A61M1/34, A61M1/3627, A61M1/3679, A61M1/3687 take precedence; needle sets with incorporated air inlet filters A61M5/162
• CPC Class Codes: A61M 5/1782 Devices aiding filling of syringes in situ combination of a vial and a syringe for transferring or mixing their contents A61J1/2096, filling of medical containers in general B65B3/003
• CPC Class Codes: A61M 5/36 with means for eliminating or preventing injection or infusion of air into body dialysis systems, blood oxygenators A61M1/14; haemofiltration equipment A61M1/34; automatic tube cut-off A61M39/281

Abstract

Systems and methods allow for limiting a presence of air bubbles in a fluidic medium filled into a reservoir. A fluidic medium may be forced from a vial into a reservoir. A vial may be degassed prior to being used to fill a reservoir. A filling process may be automated and a membrane may be located in a fluid flow path to trap air bubbles in a fluidic medium being filled into a reservoir.

Claims

1. A system for use in filling one or more reservoirs, the system comprising:

a vial having an interior volume for containing a liquid;

a diaphragm arranged in the vial, the diaphragm defining a pressurizable volume, the diaphragm separating the interior volume of the vial from the pressurizable volume, the diaphragm inflatable to expel liquid from the interior volume in a case where a pressure within the pressurizable volume is increased to inflate the diaphragm; and

a reservoir having an interior volume;

said diaphragm being inflatable to force liquid out of the interior volume of the vial and into the interior volume of the reservoir in a case where the interior volume of the vial is holding the liquid and the interior volume of the vial is connected to the interior volume of the reservoir by a needle and the pressure within the pressurizable volume is increased;

wherein a flow path between the interior volume of the vial and the interior volume of the reservoir is configured to reduce air bubbles from passing in the liquid as the liquid is transferred from the interior volume of the vial to the interior volume of the reservoir.

2. The system of claim 1,

said diaphragm deflatable to increase the interior volume of the vial in a case where the pressure within the pressurizable volume is decreased.

3. The system of claim 1,

said diaphragm attached to an inner surface of the vial.

4. The system of claim 1, further comprising:

a pressure providing device for changing a pressure within the pressurizable volume.

5. The system of claim 4,

said pressure providing device including a syringe;

said syringe connectable to the vial such that in a case where the syringe is filled with air and is connected to the vial and a plunger head within the syringe is advanced, a pressure within the pressurizable volume is increased so as to cause the diaphragm to inflate and reduce the interior volume of the vial.

6. The system of claim 1, further comprising:

a reservoir having an interior volume;

said diaphragm deflatable to evacuate air from the interior volume of the reservoir into the interior volume of the vial in a case where the interior volume of the reservoir and the interior volume of the vial are connected by a needle and a vacuum is applied to the pressurizable volume of the vial.

7. The system of claim 1, said vial further comprising:

a first port for allowing liquid to be expelled from the interior volume of the vial; and

a second port for allowing a gas to be injected into the pressurizable volume of the vial.

13. The system of claim 1, further comprising:

a filter arranged in the flow path to filter air bubbles so as to reduce air bubbles from passing in the liquid as the liquid is transferred from the interior volume of the vial to the interior volume of the reservoir.

14. The system of claim 4,

wherein the pressure providing device is in communication with the pressurizable volume;

and

wherein the pressure providing device is external the vial.

8. A method for filling a reservoir, comprising:

providing a fluid flow path between an interior volume of a vial and an interior volume of the reservoir;

applying a pressure to a pressurizable volume of the vial so as to inflate a diaphragm to cause liquid to be expelled from the interior volume of the vial into the interior volume of the reservoir; and

filtering air from liquid as the liquid is expelled from the interior volume of the vial to the interior volume of the reservoir.

9. The method of claim 8, said applying the pressure comprising:

injecting at least one of a gas and a liquid from a pressure providing device into the pressurizable volume of the vial.

10. The method of claim 9,

said pressure providing device including a syringe;

said injecting comprising injecting the at least one of the gas and the liquid from the syringe into the pressurizable volume of the vial by advancing a plunger head within the syringe.

11. The method of claim 8, further comprising:

applying a vacuum to the pressurizable volume of the vial so as to deflate the diaphragm to cause air to be evacuated from the interior volume of the reservoir into the interior volume of the vial.

12. The method of claim 11,

said applying the vacuum occurring before said applying the pressure.