Injector device with force lock-out and injection rate limiting mechanisms

US9486581B2 · kind B2 · utility

Assignee

• Becton, Dickinson and Company · US

Inventors

• John Lovell · North Bergen, US
• Robert E. West · Berkeley Heights, US
• Todd M. Chelak · Waldwick, US
• William A Easterbrook · Hackettstown, US
• Mark Follman · Glen Rock, US
• Edward P. Browka · Chapel Hill, US

Key dates

• Filing date: Apr 11, 2005
• Grant date: Nov 8, 2016
• Expiry date: Nov 8, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2005/2013
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An injectable substance delivery device comprising a pen device body, a cartridge, a plunger, a drive mechanism, and at least one of a lock-out mechanism and a rate-limiting mechanism. The lock-out mechanism is provided through a ratchet engagement between the body and the plunger to restrict plunger movement and to ensure that the required needle puncture depth is realized prior to injection by locking out the injection mechanism from advancing until a specified force is applied to the skin. A rate-limiting mechanism is also provided through a user compressed plunger drive spring to ensure that a specific rate of injection is realized during the injection of a medicament.