Injection-assisting probe for medical injector assembly

US7108675B2 · kind B2 · utility

Assignees

• Antares Pharma, Inc. · US
• Becton, Dickinson and Company · US

Inventors

• David M. DeBoer · Waconia, US
• Peter L. Sadowski · Woodbury, US
• Paul Lesch · St. Peter, US
• Claude L. Berman · Effingham, US
• Lucio Giambattista · Lighthouse Point, US

Key dates

• Filing date: Oct 29, 2001
• Grant date: Sep 19, 2006
• Expiry date: Apr 15, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M5/3232
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A probe and nozzle assembly for reducing the pressure at which a needleless injector must deliver medicament for proper delivery are disclosed. In one embodiment of the probe, the probe is retractably located within an injector nozzle assembly. Upon activation of the energy source a portion of the probe extends past the nozzle assembly to deliver the medicament through a discharge channel. After activation the probe retracts back into the nozzle assembly. In another embodiment, the probe is fixed to the end of the nozzle assembly. In both embodiments the ratio of discharge channel length to diameter is greater than 6/1.