RESERVOIR CONNECTOR

• US 20100049135A1
• Filed: 11/06/2009
• Published: 02/25/2010
• Est. Priority Date: 10/29/1998
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Moberg, Sheldon B., Adair, Randy W., Srisathapat, Chalirmkiert
• Granted Patent: US 7,998,131 B2
• Time in Patent Office: Days
• US Class Current: 604/154
• CPC Class Codes: A61M 2005/1623 Details of air intake
• CPC Class Codes: A61M 2039/1033 Swivel nut connectors, e.g. threaded connectors, bayonet-connectors
• CPC Class Codes: A61M 2039/1072 with a septum present in the connector
• CPC Class Codes: A61M 2039/205 comprising air venting means
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 39/12 for joining a flexible tube to a rigid attachment
• 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 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/162 Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14
• 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
• CPC Class Codes: Y10T 29/49764 with testing or indicating
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/53 Means to assemble or disassemble

Abstract

A method and apparatus for a connection interface between a reservoir or syringe, infusion set tubing, and an infusion pump is provided. A base is provided which is adapted to receive a reservoir. The base has a base engagement member, such as a detent, projecting therefrom. A cap is provided which is adapted to receive the base. The cap includes a first cap engagement member, such as a detent opening, which is adapted to removably engage the base detent. The cap further includes a second cap detent opening which is adapted to removably engage the base detent. A piercing member, such as a needle, is disposed in the interior of the cap in such a manner that the needle is separated from the reservoir septum when the base detent is in the first cap detent opening, and the needle pierces the reservoir septum when the base detent is in the second cap detent opening. When the reservoir, the base and the cap are connected to form an integrated unit, this unit is then capable of being inserted and secured in the infusion pump housing.

Claims

1. A system for connecting a fluid medication reservoir to a medication pump housing, comprising:

a housing engagement interface adapted to be inserted into a corresponding opening in the medication pump housing;

an external needle disposed at and extending outwards from a first end of the housing engagement interface, wherein the needle is adapted to draw fluid from a supply vial;

a housing engagement member disposed on the exterior of the housing engagement interface, wherein the housing engagement member is adapted to engage the medication pump housing;

a first tab disposed at the first end of the housing engagement interface so as to provide a first surface for a user to grip and twist the housing engagement interface to rotatably engage or disengage the housing engagement member within the opening of the medication pump housing, wherein the housing engagement interface is configured to at least partially fit inside the opening of the medication pump housing; and

a cylindrical fluid medication reservoir disposed at a second end of the housing engagement interface to store the fluid drawn from the supply vial, wherein the housing engagement member is disposed on the housing engagement interface so that the cylindrical fluid medication reservoir is disposed within the opening of the medication pump housing when the housing engagement interface is operatively engaged with the medication pump housing.

2. The system of claim 1, wherein the housing engagement member comprises a tab or a thread.

3. The system of claim 1, wherein the housing engagement interface comprises a shoulder that forms a seal with the medication pump housing when the housing engagement interface is operatively engaged with the medication pump housing.

4. The system of claim 1, wherein the housing engagement interface comprises a detent opening disposed on the exterior of the housing engagement interface.

5. The system of claim 1, wherein the housing engagement interface comprises a fluid medication reservoir engagement member adapted to engage the fluid medication reservoir.

6. The system of claim 5, wherein:

the fluid medication reservoir engagement member is adapted to slide over an annular shoulder of the fluid medication reservoir to engage the fluid medication reservoir;

the fluid medication reservoir engagement member allows for a snap fit engagement with the fluid medication reservoir;

or

engaging the fluid medication reservoir results in tactile or visual feedback to the user when the fluid medication reservoir engagement member is engaged with the fluid medication reservoir.

7. The system of claim 1, wherein the external needle is disposed in an axis around which the housing engagement interface rotates to releasably secure the housing engagement interface within the opening in the medication pump housing.

8. The system of claim 1, further comprising infusion set tubing, wherein the infusion set tubing is in fluid communication with the fluid medication reservoir when the housing engagement interface is operatively engaged with the medication pump housing.

9. The system of claim 1, further comprising a vent port disposed on the housing engagement interface for venting the medication pump housing to the atmosphere without permitting liquid to pass through the vent port.

10. A system for connecting a fluid medication reservoir to a medication pump housing, comprising:

a housing engagement interface adapted to be inserted into a corresponding opening in the medication pump housing, the housing engagement interface having a circumference;

a conduit disposed in the housing engagement interface and adapted to allow fluid flow through the housing engagement interface, wherein the conduit is formed about an axis around which the housing engagement interface rotates, the axis being perpendicular to a plane defined by the circumference of the housing engagement interface;

a needle disposed on and extending outwards from a first end of the housing engagement interface, wherein the needle is adapted to draw fluid from a supply vial;

a housing engagement member disposed on the exterior of the housing engagement interface, wherein the housing engagement member is adapted to engage the medication pump housing;

a first tab disposed at the first end of the housing engagement interface so as to provide a first surface for a user to grip and twist the housing engagement interface to rotatably engage or disengage the housing engagement member within the opening of the medication pump housing, wherein the housing engagement interface is configured to at least partially fit inside the opening of the medication pump housing; and

a cylindrical fluid medication reservoir disposed at a second end of the housing engagement interface to store the fluid drawn from the supply vial, wherein the housing engagement member is disposed on the housing engagement interface so that the cylindrical fluid medication reservoir is disposed within the opening of the medication pump housing when the housing engagement interface is operatively engaged with the medication pump housing.

11. The system of claim 10, further comprising infusion set tubing, wherein the infusion set tubing is in fluid communication with the fluid medication reservoir when the housing engagement interface is operatively engaged with the medication pump housing.

12. The system of claim 11, wherein the infusion set tubing is adapted to be in operable contact with the conduit disposed in the housing engagement interface when the housing engagement interface is operatively engaged with the medication pump housing.

13. The system of claim 10, wherein the conduit comprises the needle.

14. The system of claim 10, further comprising a vent port disposed on the housing engagement interface for venting the medication pump housing to the atmosphere without permitting liquid to pass through the vent port.

15. The system of claim 10, further comprising a reservoir engagement member disposed on the housing engagement interface.

16. The system of claim 15, wherein:

the reservoir engagement member is adapted to slide over an annular shoulder of the fluid medication reservoir to engage the fluid medication reservoir;

the reservoir engagement member allows for a snap fit engagement with the fluid medication reservoir;

or

engaging the fluid medication reservoir results in tactile or visual feedback to the user when the fluid medication reservoir engagement member is operably engaged with the fluid medication reservoir.

17. The system of claim 10, further comprising a second tab disposed at the first end of the housing engagement interface so as to provide a second surface for the user to grip and twist the housing engagement interface to rotatably engage or disengage the housing engagement member within the opening of the medication pump housing.

18. The system of claim 10, wherein the needle is coaxial with the conduit.

19. The system of claim 10, wherein the tab projects outward from the housing engagement interface such that the first surface of the first tab is disposed in an orientation perpendicular to the plane defined by the circumference of the housing engagement interface.

20. A method of connecting a fluid medication reservoir to a medication pump housing, the method comprising releasably coupling the fluid medication reservoir to the medication pump housing using a system comprising:

a housing engagement interface adapted to be inserted into a corresponding opening in the medication pump housing;

infusion set tubing adapted to connect with the housing engagement interface;

an external needle disposed at and extending outwards from a first end of the housing engagement interface, wherein the needle is adapted to draw fluid from a supply vial;

a housing engagement member disposed on the exterior of the housing engagement interface, wherein the housing engagement member is adapted to engage the medication pump housing;

a first tab disposed at the first end of the housing engagement interface so as to provide a first surface for a user to grip and twist the housing engagement interface to rotatably engage or disengage the housing engagement member within the opening of the medication pump housing, wherein the housing engagement interface is configured to at least partially fit inside the opening of the medication pump housing; and

a cylindrical fluid medication reservoir disposed at a second end of the housing engagement interface to store the fluid drawn from the supply vial, wherein the housing engagement member is disposed on the housing engagement interface so that the cylindrical fluid medication reservoir is disposed within the opening of the medication pump housing when the housing engagement interface is operatively engaged with the medication pump housing,

so that the fluid medication reservoir is connected to the medication pump housing.

21. The method of claim 20, wherein the external needle is disposed in an axis around which the housing engagement interface rotates to releasably secure the housing engagement interface within the opening in the medication pump housing.

22. The method of claim 20, further comprising flexibly deflecting the housing engagement interface over an annular shoulder of the fluid medication reservoir to engage the reservoir.

23. The method of claim 22, wherein engaging the reservoir provides tactile or audible feedback to a user when the housing engagement interface is engaged with the fluid medication reservoir.

24. The method of claim 20, wherein;

the housing engagement interface further comprises a vent port disposed on the housing engagement interface for venting the pump housing to the atmosphere without permitting liquid to pass through the vent port; and

the method further comprises venting the pump housing to the atmosphere.

25. The method of claim 20, further comprising a second tab disposed at the first end of the housing engagement interface so as to provide a second surface for the user to grip and twist the housing engagement interface to rotatably engage or disengage the housing engagement member within the opening of the medication pump housing.