SYSTEMS AND METHODS ALLOWING FOR RESERVOIR AIR BUBBLE MANAGEMENT

• US 20110230834A1
• Filed: 05/27/2011
• Published: 09/22/2011
• Est. Priority Date: 04/30/2007
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Hezzell, David, Lee, Mike, Kavazov, Julian D., Bikovsky, Rafael, Luan, Truong Gia, Ibranyan, Arsen, Miller, Thomas, Griffin, Christopher G., Shen, Benjamin X.
• Granted Patent: US 8,172,929 B2
• Time in Patent Office: Days
• US Class Current: 604/140
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2075 for external venting
• CPC Class Codes: A61J 1/2096 Combination of a vial and a syringe for transferring or mixing their contents
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/341 angularly adjustable or angled away from the axis of the injector
• 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 5/36 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
• CPC Class Codes: A61M 5/38 using hydrophilic or hydrophobic filters
• CPC Class Codes: Y10T 29/494 Fluidic or fluid actuated device making

Abstract

Various embodiments of the present invention are directed to limiting a presence of air bubbles in fluidic media in a reservoir. Air passages may allow air to escape from fluidic media in a reservoir. Membranes may allow for trapping air bubbles in fluidic media before fluidic media enters a reservoir. A membrane may allow air to flow from a first reservoir containing fluidic media to a second reservoir while plunger heads within each of the reservoirs are moved within the reservoirs. An inner reservoir with a membrane may be moveable within an outer reservoir to allow air to move from the outer reservoir to the inner reservoir. An inner reservoir containing pressurized gas may allow fluidic media to be transferred to an outer reservoir.

Claims

1-31. -31. (canceled)

32. A system for transferring fluidic media, the system comprising:

an outer reservoir having an interior volume for containing fluidic media; and

an inner reservoir having an interior volume, the inner reservoir having a septum pierceable by a needle, the needle for providing a path from a vial containing fluidic media to the interior volume of the inner reservoir in a case where a first end of the needle is in the vial and a second end of the needle opposite the first end of the needle is in the interior volume of the inner reservoir;

the outer reservoir having a septum pierceable by the needle, the needle for providing a fluid path from the vial containing fluidic media to the interior volume of the outer reservoir in a case where the first end of the needle is in the vial and the second end of the needle is in the interior volume of the outer reservoir;

at least a portion of the inner reservoir configured to be moveable in the outer reservoir between at least a first inner reservoir position and a second inner reservoir position.

33. The system of claim 32,

wherein the inner reservoir is in the first inner reservoir position when the second end of the needle is in the interior volume of the inner reservoir;

and

wherein the inner reservoir is in the second inner reservoir position when the second end of the needle is in the interior volume of the outer reservoir.

34. The system of claim 32, wherein pressure in the interior volume of the inner reservoir is substantially equal to pressure in the vial when the inner reservoir is in the first inner reservoir position.

35. The system of claim 34, wherein pressure in the vial is greater than pressure in the interior volume of the outer reservoir when the inner reservoir is in the second inner reservoir position.

37. The system of claim 32, the system further comprising:

a seal member positioned between the outer reservoir and the inner reservoir.

38. The system of claim 37, wherein the interior volume of the inner reservoir is on one side of the seal member, and a chamber of the inner reservoir is on an opposite side.

39. The system of claim 32, the system further comprising:

a handle arranged to move the inner reservoir within the outer reservoir.

40. The system of claim 32, wherein the interior volume of the inner reservoir contains pressurized gas.

41. The system of claim 40, wherein the pressurized gas comprises compressed air.

42. The system of claim 40, wherein at least some of the pressurized gas passes through the needle into the vial when the needle pierces the septum of the inner reservoir to increase pressure in the vial.

43. The system of claim 42, wherein a portion of the pressurized gas continues to pass through the needle into the vial when the needle pierces the septum of the inner reservoir until pressure in the interior volume of the inner reservoir is substantially equal to the pressure in the vial.

44. The system of claim 42, wherein the at least some of the pressurized gas forces at least some fluidic media from the vial into the interior volume of the outer reservoir when the second end of the needle is in the interior volume of the outer reservoir.

45. The system of claim 32, wherein pressure in the interior volume of the inner reservoir is greater than pressure in the inner reservoir before the septum of the inner reservoir is pierced by the needle.

46. The system of claim 35, wherein pressure in the interior volume of the inner reservoir is substantially greater than pressure in the vial before the inner reservoir is in the first inner reservoir position.

47. The system of claim 32,

the needle for providing the path from the vial to the interior volume of the inner reservoir in a case where the first end of the needle is in contact with fluidic media in the vial and the second end of the needle is in the interior volume of the inner reservoir;

the needle for providing the fluid path from the vial to the interior volume of the outer reservoir in a case where the first end of the needle is in contact with fluidic media in the vial and the second end of the needle is in the interior volume of the outer reservoir.

36. A method of making a system for transferring fluidic media, the method comprising:

providing an outer reservoir having an interior volume for containing fluidic media;

providing an inner reservoir having an interior volume, the inner reservoir having a septum pierceable by a needle, the needle for providing a path from a vial containing fluidic media to the interior volume of the inner reservoir in a case where a first end of the needle is in the vial and a second end of the needle opposite the first end of the needle is in the interior volume of the inner reservoir;

configuring the outer reservoir to include a septum pierceable by the needle, the needle for providing a fluid path from the vial containing fluidic media to the interior volume of the outer reservoir in a case where the first end of the needle is in the vial and the second end of the needle is in the interior volume of the outer reservoir; and

configuring at least a portion of the inner reservoir to be moveable in the outer reservoir between at least a first inner reservoir position and a second inner reservoir position.

48. A method of manufacturing a system for transferring fluidic media, the system comprising:

providing an outer reservoir having an interior volume for containing fluidic media;

providing an inner reservoir having an interior volume, the inner reservoir having a septum pierceable by a needle, the needle for providing a path from a vial containing fluidic media to the interior volume of the inner reservoir in a case where a first end of the needle is in the vial and a second end of the needle opposite the first end of the needle is in the interior volume of the inner reservoir;

providing the outer reservoir with a septum pierceable by the needle, the needle for providing a fluid path from the vial containing fluidic media to the interior volume of the outer reservoir in a case where the first end of the needle is in the vial and the second end of the needle is in the interior volume of the outer reservoir; and

configuring at least a portion of the inner reservoir to be moveable in the outer reservoir between at least a first inner reservoir position and a second inner reservoir position.