Making closed end tubes for surgical instruments
CA 2385585 A1 · Owner: O'Brien, John L. · Inventors: Hoekstra, Joop F.; Dion, Ernest; O'Brien, John L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Techniques are described for making one-piece tubes for surgical instruments in which an inner tube (204) that carries a cutting implement (208) is disposed for movement within an outer tube (200) having a cutting window (206) that exposes the cutting implement to tissue. Swaging is performed to close an end (86) of a tubular member (80) that is to serve as either the inner tube or the outer tube. Other processing steps are also performed. For example a , selected amount of a protrusion (87) formed by swaging is cut away the tube , material is fused together at a seam (89) formed by the swaging and the , closed distal end of the tubular member (80) is formed into a selected shape. For …
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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 September 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 13, 2022.
- 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.