T-tube
CA 1280658 C · Owner: Tretbar, Lawrence L. · Inventors: Tretbar, Lawrence L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
T-TUBE, Abstract of the Disclosure, A flexible T-tube for utilization in surgical procedures and the like includes a flexible crossbar comprising two generally planar and intersecting walls joined at an apex and forming a V-shaped channel communicating with the stem near the center of the apex. The stem has an elliptical outer cross-section near the juncture thereof with the crossbar channel and is aligned such that the major axis of the elliptical cross-section of the stem is aligned generally parallel to the longitudinal axis of the crossbar channel. The walls of the crossbar channel are trimmed prior to insertion into a body duct such that the walls fit generally snugly within the duct.
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
- Granted February 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2008.
- 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.