Drive mechanism for a drug delivery device
CA 2582976 C · Owner: Terumo Corporation · Inventors: Saiki, Masaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drive mechanism suitable for the efficient transmission of an actuation force in drug delivery devices, which allows dispensing of large doses of drug and which provides an easy to use correction of a set dose. The drive mechanism comprises a plunger rod (26) having a non-circular cross section and being hollow and being prevented from rotation; a lead screw (25) engaged with the plunger rod (26) a dose setting dial (22) rotatably moving towards the proximal end during dose setting and rotatably moving towards the distal end during dose dispensing; an inner cylinder (23) being releasable connected to the dose setting dial (22) such that relative rotation between the dose setting …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 14, 2005 and granted October 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.