Ultrasoft embolism devices and process for using them
CA 2127713 C · Owner: Chee, U. Hiram · Inventors: Zenzen, Wendy; Berenstein, Alejandro; Chee, U. Hiram
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is an exceptionally flexible ultrasoft vaso-occlusive or , embolism forming device. It is made of radiopaque material which maybe a braid (200), coil (100); or chain (600) which forms a long, thin thread-like device having little rigidity or column strength. The diameter of the device may be less than about 0.010 inches. The filamentary material making up the device used to form the coil (100), braid (200) or chain (600) is typically of a , diameter less than about 0.002 inches. The device is sufficiently flexible and small that it maybe hydraulically delivered to a site within the vasculature of the human body using an injected drug or fluid flush through a catheter …
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 October 15, 1993 and granted February 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2015.
- 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.