EP1601396A2 — Improvements in and relating to drive mechanisms suitable for use in drug delivery devices
Assigned to Sanofi Aventis Deutschland GmbH · Expires 2005-12-07 · 20y expired
What this patent protects
The invention relates to a drive mechanism for use in a drug delivery device comprising: a housing (2); a dose dial sleeve (40) having a helical thread of a first lead; and a two-part piston rod (14). The said two-part piston rod (14) comprises an outer part (18) having a helical…
USPTO Abstract
The invention relates to a drive mechanism for use in a drug delivery device comprising: a housing (2); a dose dial sleeve (40) having a helical thread of a first lead; and a two-part piston rod (14). The said two-part piston rod (14) comprises an outer part (18) having a helical thread of a second lead and an inner part (16) having a helical thread of a third lead, whereby the first lead of the thread of the dose dial sleeve (40) is equal to the sum of the second lead of the thread of the outer part (18) of the piston rod (14) and the third lead of the thread of the inner part (16) of the piston rod (14).
Drugs covered by this patent
- Ozempic (semaglutide) · Novo Nordisk
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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