Device and method for safe location and marking of a cavity and sentinel lymph nodes
CA 2715331 C · Owner: Devicor Medical Products, Inc. · Inventors: Wilson, Peter M.; Bush, Mary Elizabeth; Sirimanne, D. Laksen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cavity and sentinel lymph node marking devices marker delivery devices, and methods are disclosed. More particularly upon insertion into a body, the cavity marking device and method enable one to determine the center orientation, and periphery of the cavity by radiographic mammography, echogenic, or other noninvasive imaging techniques. A composition and method are disclosed for locating the sentinel lymph node in a mammalian body to determine if cancerous cells have spread thereto. The composition is preferably a fluid composition consisting of a carrier fluid and some type of contrast agent; alternatively the contrast agent may itself be a fluid and therefore not need a separate carrier …
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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 December 23, 1999 and granted January 12, 2016. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2021.
- 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.