Method and instrument for establishing the receiving site of a coronary artery bypass graft
CA 2179508 C · Owner: Rygaard, Jorgen A. · Inventors: Rygaard, Jorgen A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for locating an ar-, terial construction and performing an arteriotomy distally thereof, especially with a view to establishing a bypass, connection between the aorta (52) and a part of the coronary artery (51) distally of a constriction in the artery, the most important steps are: (a) locating the site of the constriction in the artery (51), preferably by using an instrument (9) with a head (3) carrying an ultrasonic transducer array (not shown), and (b) making an incision in the artery, (51) closely distally of the constriction preferably by using a knife (not shown) placed in said head (3). By proceeding in this manner, it is possible to perform the initial steps of a …
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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 12, 1994 and granted June 27, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2016.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.