Neutron brachytherapy device and method
CA 2381996 A1 · Owner: Varian Medical Systems, Inc. · Inventors: Halpern, David S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A neutron source for neutron brachytherapy is disclosed that may generate neutrons to treat cancer and other tumors (24). The neutron source in accordance with the invention may include a capsule (38) into which the neutron emitting material is loaded and a guide wire (36). A coiled wire may be placed around the capsule (38) and the guide wire (36) to strengthen the capsule (38) and guide wire (36). In accordance with one embodiment the , capsule (38) containing the neutron emitting material is sufficiently thin so that the helium gas generated during the decay of the neutron emitting material may escape into the atmosphere. In a preferred embodiment the , neutron emitting material …
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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.