Retracting tip trocar assembly
CA 2129332 C · Owner: Roth, Alex T. · Inventors: Roth, Alex T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retracting tip trocar assembly (1) including a trocar tube (4) and a shaft (3) having a piercing tip (5) at one end thereof. The device includes a retracting mechanism (A) which allows the piercing tip (5) to be held in a cutting position upon application of an insertion force such as when the piercing tip (5) is pressed against a wall of a human body cavity. Upon release of the insertion force, such as when the piercing tip (5) passes through the wall the , retracting mechanism (A) causes the piercing tip (5) to be retracted into the trocar tube (4). The retracting mechanism includes two links (1) pivoting at one end to each other and at the other end respectively to the proximal end …
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 March 1, 1993 and granted August 26, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 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.