Fluid delivery device needle retraction mechanisms, cartridges and expandable hydraulic fluid seals

US8740847B2 · kind B2 · utility

Assignee

• VALERITAS, INC. · US

Inventors

• Steven F. Levesque · Hanson, US
• Geoffrey Jenkins · Wellesley, US
• Robert L. Standley · Acton, US
• Matthew Johnson · Boylston, US
• Daniel A. Dube, Jr. · Putnam, US

Key dates

• Filing date: Jun 9, 2011
• Grant date: Jun 3, 2014
• Expiry date: Mar 22, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/3128
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A fluid delivery device includes an automatic needle retraction mechanism configured to automatically retract a delivery end of a needle into a housing. In one embodiment, the needle assembly is configured to automatically withdraw the delivery end of the needle into the housing upon an actuator moving from the first position to the second position. In one embodiment, the needle assembly is configured to automatically withdraw the delivery end of the needle into the housing upon decoupling a bottom surface of the housing from a skin surface.