Implantable cerebral spinal fluid drainage device and method of draining cerebral spinal fluid
CA 2574679 C · Owner: Harper, Derek J. · Inventors: Scheer, Ron D.; Harper, Derek J.; Kiehl, Andrew R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a drainage system that includes a ventricular catheter a drainage catheter, and a positive displacement pump that can function to actively drain CSF from the ventricles of the brain of a patient. Methods of using a drainage system in accordance with the invention are also provided as , well as kits.
Read the whole patent
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 July 20, 2005 and granted June 4, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 20, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.