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Expired Canadian patentCanada

Partial aortic occlusion devices and methods for cerebral perfusion augmentation

CA 2444878 C · Owner: Berhow, Steven W. · Inventors: St. Germain, Jon P.; Keith, Peter T.; Barbut, Denise R.

CIPO record

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Abstract From the Canadian patent

Methods are provided for partial aortic obstruction for cerebral perfusion augmentation in patients suffering from global or focal cerebral ischemia. Alternatively, the methods can be used to partially obstruct aortic blood flow to condition the spinal cord to secrete neuroprotective agents prior to abdominal aortic aneurysm repair. Partial obstruction of a vessel can be accomplished by a device comprising an elongate catheter (102) and a distally mounted expandable member (104).The expandable member (104) may comprise one or two balloons. Other medical devices such as an angioplasty, stent, or , atherectomy catheter can be inserted distal the expandable member to provide …

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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 19, 2002 and granted February 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 19, 2002
GrantedFebruary 1, 2011
Term endedApril 19, 2022
Patent numberCA 2444878 C
Classification (IPC)A61M25/00 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedApril 19, 2002Patent grantedFeb 1, 2011Term endedApril 19, 2022

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.