Expandable percutaneous sheath
CA 2491493 A1 · Owner: Nguyen, Thanh Van · Inventors: Pham, To V.; Nguyen, Thanh Van; Shaolian, Samuel M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an expandable percutaneous sheath (100) for introduction into , the body while in a first low cross-sectional area configuration and , subsequent expansion to a second enlarged cross-sectional configuration. The sheath is maintained in the first, low cross-sectional configuration by a removable tubular restraint (200). In one application the sheath is utilized , to introduce a formed in place orthopedic fixation rod such as for use in spinal fixation procedures.
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 July 1, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 1, 2025.
- 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.