Apparatus for intubation of lacrimal ducts
CA 1070586 A · Owner: Hospital For Sick Children (The) · Inventors: Wainman, Roy; Crawford, John S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a probe set for use particularly in the canaliculus intubation of the lacrimal duct, the probe set comprising: a probe of a light wire which can be readily deflected through an angle of at least 90 degrees to permit the probe to pass from the nasolacrimal duct to the inferior meatus the, probe having an enlarged end portion which is rounded to limit the possibility of damage to tissue when the probe is inserted; and a very flexible tube of minimal rigidity having a first end attached to an end of the probe remote from the end portion and having an outside diameter comparable to that of the end portion so that in use the probe can be inserted and used to draw the tube …
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 January 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 1997.
- 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.