Medicament dry powder inhaler dispensing device

US6752148B1 · kind B1 · utility

Assignee

• Delsys Pharmaceutical Company · US

Inventors

• Joseph Thomas McGinn · Flemington, US
• Suggy Chrai · Cranbury, US
• Bogdan Brycki · Maple Shade, US
• Bawa Singh · Cherry Hill, US
• Peter Coyle · Newtown, US
• Gary Santonastaso · Montgomery, US
• Hoi-Cheong Steve Sun · Tampa, US

Key dates

• Filing date: Sep 1, 2000
• Grant date: Jun 22, 2004
• Expiry date: Sep 1, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M15/0055
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An inhaler disc cartridge comprises a carrier disc with radially outwardly extending resilient fingers, each with a medicament powder dosage. A sealing disc and an indexing ring are bonded to the disc. A cam sequentially and manually deflects a selected finger causing it to snap against an anvil to release the dosage by momentum energy transfer. In other embodiments, a cassette includes a carrier substrate reel of deposited powder dosages with a dosage sealing tape. The substrate comprises a belt with a plurality of transversely extending triangular fingers, each finger tip with a dosage thereon. Each finger is snapped in sequence against an anvil while a clamp secures the belt as the fingers are deflected. The spring fingers are corrugated in one embodiment cooperating with an anvil having channels and a device for inducing agglomeration breakup air streams through the channels. Other embodiments are for impact deflection of a dosage carrying substrate in a cartridge or cassette against an anvil to release the dosages.