Insertion mechanism for a drug delivery pump

US9511189B2 · kind B2 · utility

Assignee

• UNITRACT SYRINGE PTY LTD · AU

Inventors

• Sean M. O'Connor · San Diego, US
• Robert Decker · Dillsburg, US
• Gautam N. Shetty · Pikesville, US
• Mark A. Destefano · Collegeville, US
• Ian B. Hanson · San Fernando, US
• Paul F. Bente, IV · Wayne, US

Key dates

• Filing date: Aug 30, 2012
• Grant date: Dec 6, 2016
• Expiry date: Jan 8, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/1585
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An insertion mechanism for a drug pump includes an insertion mechanism housing; a manifold guide; an insertion biasing members initially held in an energized state; a retraction biasing member and a hub connected to a proximal end of a needle, wherein the retraction biasing member is held initially in an energized state between the hub and the manifold guide; and a manifold having a septum and a cannula, wherein the annular space between the septum and the cannula defines a manifold header. The needle and cannula are inserted into the body of a user by the insertion biasing member(s), after which only the needle is retracted. Retraction of the needle may open a fluid pathway from the manifold header to the body through the cannula. A drug delivery pump includes an activation mechanism, a drive mechanism, a fluid pathway connection, and the insertion mechanism. Assembly and operation methods are provided.