Tubular microsurgery cutting apparatus
CA 1297372 C · Owner: Shapiro, Henry · Inventors: Shapiro, Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tubular microsurgery cutting apparatus is disclosed having an outer tubular member and an inner tubular sleeve reciprocatable within the outer tubular member. The inner tubular sleeve is formed near its cutting end with an enlarged diameter plated and lapped area, having a spiral axial slot extending away from the cutting end along the sleeve. This construction provides for a smooth friction, reducing engagement between the sleeve and the inside of the outer tubular member at the cutting end and a substantially non-frictional relationship of the inner sleeve and outer member throughout the remainder of the apparatus.
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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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.