Scanning device for evaluating cleanliness and integrity of medical and dental instruments
CA 2268473 A1 · Owner: Steris Corporation · Inventors: Malchesky, Paul S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Medical and other instruments and devices (16 44) may have a build-up of , biological residue film even after sterilizing. Dead cell membranes in this film can give off endotoxins. To check for the presence of biological residue film, light from a source (10, 40) travels along an optical path and is focused by a prism (22) or lens (92) on a surface (24) to be examined. Reflected and transmitted light is conveyed by optical fibers (12 42) to an , opto-electrical analyzing device (30 48, 100). In one embodiment, the optoelectrical device (30) senses the intensity of reflected light to provide an indication of reflectivity attributable to the biological film build-up. In another …
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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 October 16, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 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.