Display device for indicating the internal pressure of the tube of an infusion pump
CA 2015559 C · Owner: Kawahara, Masafumi · Inventors: D'Silva, Edmund D.; Kramer, Larry; Lynn, Kenneth M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A display device for indicating the internal pressure of a tube employed in an infusion device has an infusion drive for supplying an infusion fluid from a solution container to the human body through the tube and a sensor for detecting the internal pressure of the tube. A message indicator includes a plurality of alphanumeric display elements which are respectively comprised of a plurality of segments and displays the internal pressure of the tube detected by the sensor. The display elements are used to display a value, in alphanumeric terms corresponding to the internal pressure of the tube as detected by the sensor. The segments of the display elements are partly used to display the …
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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 April 26, 1990 and granted June 10, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2012.
- 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.