Improved o-ring for incrementally adjustable incision liner and retractor
CA 2462541 A1 · Owner: Rambo, Robert D. · Inventors: Rambo, Robert D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An O-ring (10, 12) is provided for use in an adjustable surgical wound protector having a solid cross-section including a cross-sectional center (20) that is spaced from a central longitudinal axis and a resilient configuration for squeezing into an oblong shape that is insertable into a surgical shape. At least one recess (26, 28) is defined in the O-ring that is selectively sized and shaped to enable a snap action rolling of the O-ring about the crosssectional center in predetermined increments. The recess may comprise various cross-sectional shapes, such as, at least one circumferential groove a , plurality of circumferentially positioned recesses (70) or be shaped such , that the …
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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 July 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2024.
- 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.