Apparatus for joint fluid decompression and filtration
CA 2125409 A1 · Owner: Jasty, Murali · Inventors: Jasty, Murali; Schmalzried, Thomas P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A prosthetic low pressure reservoir (48) for joint fluid (30) and removal of particulate debris from arthritic joints or joints containing artificial, man-made prostheses filters the fluid (30) and traps any particles therein, thus removing them from the periprosthetic space. The extraarticular location of the reservoir (48) is at a lower pressure than the intraarticular space (31). Increases in intraarticular joint fluid (30) pressure during normal joint activities will cause fluid (30) and particulate debris to preferentially flow into the low pressure reservoir (48). In this manner, intraarticular fluid pressures are reduced joint fluid, is filtered, and the particulate and/or solute …
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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 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2014.
- 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.