Priming method for infusion device

• US 9,682,199 B2
• Filed: 12/06/2013
• Issued: 06/20/2017
• 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
• Primary Examiner(s): STIGELL, THEODORE J
• Application Number:
  US14/098,967
• Publication Number:
  US 20140171867A1
• Time in Patent Office: 1,292 Days
• 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 pump having a housing, a cartridge for holding medication, a cartridge cap for securing the cartridge to the housing, at least two housing contacts disposed proximate to the cartridge cap, a microprocessor having a pre-programmed priming sequence, and a conductivity sensor within the housing in electrical communication with the microprocessor and the at least two housing contacts;

an infusion set comprising an adhesive patch and 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 releasably attachable to the cartridge cap;

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 attached to the upper housing or 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; and

wherein the pre-programmed priming sequence is disabled when the conductivity sensor detects a closed circuit across the housing contacts.

2. The medical infusion system of claim 1, wherein the pre-programmed priming sequence is enabled when the conductivity sensor detects an open circuit across the housing contacts.