Bloodless catheter
CA 2054547 A1 · Owner: Bonaldo, Jean M. · Inventors: Bonaldo, Jean M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A medical device which prevents the backflow of fluid therethrough is particularly useful as a bloodless catheter assembly, that is, prevents the backflow of blood through the catheter by utilization of a self-closing valve carried in a hollow catheter housing to one end of which a catheter is fixed so as to provide a fluid passage through the catheter and catheter housing. The fluid passage in the catheter housing is sealed by a self-sealing valve element extending transversely across the passage upstream from the catheter. A hollow needle is held in the catheter housing downstream of and pointed at the valve element. Attachment of a fluid dispensing medical appliance to the other catheter …
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 October 30, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2013.
- 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.