Method and apparatus for monitoring cerebral physiology
CA 2317442 A1 · Owner: Curators Of The University Of Missouri · Inventors: Huckfeldt, Roger Eugene; Phillips, Jeffrey Owen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method, and apparatus for predicting the outcome of head injury trauma by monitoring the pH of cerebrospinal fluid (CSF). The apparatus includes a pH probe (3) for reception in a patient's brain ventricle and capable of , monitoring the pH of CSF; calculator for calculating the pH at the probe at sequential times; a comparator for comparing the calculated pH values with stored values, a device for displaying and/or recording the resulting values.
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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 January 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2021.
- 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.