Method, instrument and anastomotic fitting for use when performing an end-to-side anastomosis
CA 2179507 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
An end-to-side anastomosis, between a first vessel (27) and a second vessel (51) is carried out, using an anastomosis instrument comprising a tube (20) in which, the first vessel (27) is inserted and everted at the end of the, tube (20) to form a collar (28) a springy anastomotic fitting (30), with outwardly directed spikes (32) having previously been, placed under elastic bending in a circumferential recess (22). The, tube (20) is inserted in a previously made incision in the second vessel, (51) a guide member (35) ensuring, that the wall region (53) around the incision contacts the everted, collar (28). Then an ejector (23), is operated to liberate the fitting (30) from the recess (22), …
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 April 12, 1994 and granted August 3, 1999. 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
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.