Handswitch cord and circuit
CA 2198313 A1 · Owner: Heard, David N. · Inventors: Lindemann, Russell W.; Heard, David N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A replaceable accessory and cord set (10) for an electrosurgical instrument (11) that has a proximal end (15) handle (26) for holding by the surgeon and distal end (16) effectors for delivery of electrosurgery to a patient (12). A cord (17)electrically couples an electrosurgical generator (14) to the instrument with two or more conductors (18). A handswitch (19) with normally open contacts (20) is near the proximal end (15). One of the contacts (20) attaches to an active conductor and another of the conductors connected to the other contact (21). A receptacle (22) on the handswitch (19) connects electrically to the contact (20). A terminal (23) on the electrosurgical instrument (11) …
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 February 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 2019.
- 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.