Drainage system for cerebrospinal fluid
CA 2612440 C · Owner: Hoelper, Manfred · Inventors: Hoelper, Bernd M.; Hoelper, Manfred; Schroeter, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The object of providing a cerebrospinal fluid drainage system which reacts precisely to , changes in pressure in the cerebrospinal fluid with ease of operation, is , achieved by the present invention in that a pump is used for draining the cerebrospinal fluid (liquor), wherein operating measured values supplied by sensors act as controlled variable for the , operation of the pump. The pressure in the liquor line currently measured by a pressure , sensor, the liquor pressure in the intracranial cavity being treated measured , intracorporeally by a pressure sensor and/or the volume of liquor already pumped out, as , operating measured value can, for example, serve as the basis for …
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 March 24, 2006 and granted November 26, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2026.
- 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.