Method for preventing laparoscope fogging
CA 2307434 A1 · Owner: Innovative Surgical Technology, Inc. · Inventors: Platts, David; Seitzinger, Michael R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention includes maintaining the region of the proximal lens of a, laparoscope at greater than ambient temperature in order to prevent fogging during use. Heating is accomplished using commercially available chemical heat packs generally, used for heating boots or gloves or by using electrically powered heating tape. The, invention differs from other anti-fogging devices which either immerse the , distal lens region of the laparoscope in a warm fluid or treat this lens with anti-fogging solutions, in, that above-ambient temperature is continuously maintained throughout the laparoscope, since it is known that a cool laparoscope fogs when placed in the vicinity of warm, …
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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 May 3, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2022.
- 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.