PRIMING METHOD FOR INFUSION DEVICE

• US 20140171867A1
• Filed: 12/06/2013
• Published: 06/19/2014
• Est. Priority Date: 12/19/2012
• Status: Active Grant

• Current Assignee: LifeScan IP Holdings, LLC
• Original Assignee: Animas Corporation (Johnson & Johnson)
• Inventors: Walsh, Ryan, Baker, Daniel L., Clemente, Matthew, King, William, Kuehl, Gerald
• Granted Patent: US 9,682,199 B2
• Time in Patent Office: Days
• US Class Current: 604/111
• CPC Class Codes: A61M 2005/1402 Priming
• CPC Class Codes: A61M 2039/1022 additionally providing electrical connection
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/6027 Electric-conductive bridges closing detection circuits, with or without identifying elements, e.g. resistances, zener-diodes
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/5086 for indicating if defective, used, tampered with or unsterile

Abstract

Described is drug infusion device and lineset for delivering medication. The novel pump and lineset described herein eliminate the ability of the pump and lineset from being primed when the cartridge reservoir is in fluid communication with the drug-delivering cannula, through which medication is delivered, is inserted into the skin of a patient. The system and method of the invention include a lineset having a plurality of electrical leads for allowing electrical communication between the infusion pump and the infusion set and for allowing the pump to determine whether the lineset is connected to the infusion set when a priming operation is initiated.

Claims

1. A medical infusion system, comprising:

an infusion set comprising an adhesive patch, an upper housing attached to the adhesive patch, and at least two contact plugs, the at least two contact plugs in electrical communication with one another;

an infusion set connector releasably attachable to the upper housing;

at least two connector contacts in the connector configured for electrical communication with the at least two contact plugs when the connector is attached to the upper housing;

a lineset comprising flexible tubing attached to the connector;

at least two electrical wires contained within or attached to the lineset, each of the at least two electrical wires in electrical communication with one of the at least two connector contacts;

a luer connector attached to the lineset; and

at least two lineset contacts disposed proximate to the luer connector, wherein a closed electrical circuit is detected across the at least two lineset contacts when the infusion set connector is releasably attached to the upper housing, and wherein an open electrical circuit is detected across the at least two lineset contacts when the infusion set connector is not attached to the upper housing.

2. The medical infusion system of claim 1, comprising an infusion pump having a housing, a display, a data entry keypad, a cartridge for holding medication, a cartridge cap for securing the cartridge in the housing, and at least two housing contacts disposed proximate to the cartridge cap.

3. The medical infusion system of claim 2, comprising a conductivity sensor disposed in the housing and in electrical communication with the at least two housing contacts.

4. The medical infusion system of claim 3 wherein the conductivity sensor is in electrical communication with a microprocessor in the housing.

5. The medical infusion system of claim 4 wherein the infusion pump includes a pre-programmed priming sequence.

6. The medical infusion system of claim 5 wherein the pre-programmed priming sequence is disabled when the conductivity sensor detects a closed circuit across the housing contacts.

7. The medical infusion system of claim 5 wherein the pre-programmed priming sequence is enabled when the conductivity sensor detects an open circuit across the housing contacts.

8. A medical infusion system, comprising:

an infusion set comprising an adhesive patch, an upper housing attached to the adhesive patch, and a separator extending from the upper housing;

an infusion set connector releasably attachable to the upper housing;

at least two connector contacts in the connector pre-biased to be in electrical communication with each other when the connector is not attached to the upper housing;

a lineset comprising flexible tubing attached to the connector;

at least two electrical wires contained within or attached to the lineset, each of the at least two electrical wires in electrical communication with one of the at least two connector contacts;

a luer connector attached to the lineset; and

at least two lineset contacts disposed proximate to the luer connector, wherein when the connector is releasably attached to the upper housing, the separator is inserted between the at least two connector contacts breaking the electrical connection between them, and wherein an open electrical circuit is detected across the at least two lineset contacts when the infusion set connector is attached to the upper housing.

9. The medical infusion system of claim 8, comprising an infusion pump having a housing, a display, a data entry keypad, a cartridge for holding medication, a cartridge cap for securing the cartridge in the housing, and at least two housing contacts disposed proximate to the cartridge cap.

10. The medical infusion system of claim 9, comprising a conductivity sensor disposed in the housing and in electrical communication with the at least two housing contacts.

11. The medical infusion system of claim 10 wherein the conductivity sensor is in electrical communication with a microprocessor in the housing.

12. The medical infusion system of claim 11 wherein the infusion pump includes a pre-programmed priming sequence.

13. The medical infusion system of claim 12 wherein the pre-programmed priming sequence is disabled when the conductivity sensor detects an open circuit across the housing contacts.

14. The medical infusion system of claim 13 wherein the pre-programmed priming sequence is enabled when the conductivity sensor detects a closed circuit across the housing contacts.

15. A medical infusion system, comprising:

an infusion set comprising an adhesive patch, an upper housing attached to the adhesive patch;

an infusion set connector releasably attachable to the upper housing;

a lineset comprising flexible tubing attached to the connector;

a luer connector attached to the lineset;

an infusion pumping comprising a housing, a data entry keypad, a display, and a microprocessor comprising a pre-programmed priming sequence; and

a harness configured for releasable attachment to the connector, the harness comprising a sensing element for determining when the connector is releasably attached to the harness,

wherein the pre-programmed priming sequence is enabled by the microprocessor when the sensing element provides a signal to the microprocessor indicating that the harness is releasably attached to the connector.

16. The medical infusion system of claim 15, wherein the sensing element comprises one or more of a hall effect sensor, a pressure sensor, and an optical sensor.

17. The medical infusion system of claim 15 wherein the connector comprises one or more magnets.

18. The medical infusion system of claim 17 wherein the sensing element comprises a hall effect sensor that if configured to provide a signal to the microprocessor when sensing the one or more magnets in connector.