Cassette for a hidden injection needle

US8177749B2 · kind B2 · utility

Assignee

• AVANT MEDICAL CORP. · US

Inventors

• John B. Slate · San Diego, US
• Michael W. Burk · San Marcos, US
• Richard J. Koerner · San Diego, US
• Corey M. Magers · Oceanside, US
• Andrew C. Barnes · San Diego, US

Key dates

• Filing date: May 20, 2008
• Grant date: May 15, 2012
• Expiry date: Jul 15, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/6045
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A system for injecting a fluid medicament into a patient includes a drive mechanism, and a cassette loaded with a pre-filled hypodermic syringe. When the cassette is loaded, the syringe is held firmly inside and the cassette can be selectively engaged with the drive mechanism. The drive mechanism has two motors. A first motor initially moves the hypodermic syringe from a position inside the cassette where its needle is concealed, to a position where the needle extends from the cassette for insertion into a patient for an injection. With the needle inserted, a second motor pushes the syringe stopper to expel a fluid medicament from the syringe. After an injection, the first motor withdraws the syringe back into concealment inside the cassette, to again firmly hold the syringe on the cassette. The cassette and syringe, in combination, can then be removed from the drive mechanism and discarded.