Medical device for fluid delivery having low fluid flow rate
CA 2470771 C · Owner: Russell, Scott M. · Inventors: Russell, Scott M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for delivering a drug includes a body having a proximal end and a distal end and an opening in the distal end thereof. An orifice mechanism at the distal , end of the body communicates with the opening. The orifice mechanism includes an , inner member having a proximal end and a distal end; a winding helically wound around the inner member; and wherein the winding and the inner member define a first , channel for carrying a drug therethrough. An inlet is at the proximal end of the , winding and an outlet is at the distal end of the inner member.
Read the whole patent
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 June 11, 2004 and granted November 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2026.
- 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.