A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 1/313 (2006.01) A61B 1/12 (2006.01) G02B 23/24 (2006.01) G02B 27/00 (2006.01)
Patent
CA 2307434
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, wet patient tissue.
Platts David
Seitzinger Michael R.
Blake Cassels & Graydon Llp
Innovative Surgical Technology Inc.
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