Surgical instrument for impact insertion of an intraosseous trocar-needle
CA 2135099 C · Owner: Waismed Ltd · Inventors: Waisman, Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surgical instrument serves to insert a trocar needle into the bone marrow of a patient for connection of a syringe an infusion set or the like. The instrument includes a cylindrical housing containing a sliding bolt and the trocar needle configured to bra forcefully shot through the bone material into the marrow by release of a compressed helical spring. The bolt holds the rear end of the needle in a releasable grip permitting the needle to be released and to remain in the bone. The helical spring is positioned in the rear of the housing and of the bolt and is held in com- pressed state by a catch which is releasable by pressure on a trigger. This shoots the bolt and the needle forwards a …
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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 November 4, 1994 and granted April 15, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2016.
- 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.