Multiple cross section needle and elastic plug assembly for a medical device
CA 2203348 A1 · Owner: Thoresen, Stephen L. · Inventors: Brimhall, Greg L.; Thoresen, Stephen L.; Steinman, Christopher P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The assembly of this invention comprises an elastic plug that is retained in a medical device, such as a catheter. A needle having a distal portion and a proximal portion resides in the elastic plug. The proximal portion has a different cross-section than the distal portion. In one embodiment, the cross-section of the proximal portion is smaller than the distal portion. Upon removal of the needle from the catheter and the elastic plug, the space in the elastic plug that had been occupied by the proximal portion of the needle is closed to effectively achieve the sealing function of the plug. The needle may include one or more notches in fluid communication with the needle lumen. One notch is …
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 April 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2019.
- 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.