Michael Joseph Blackhurst,Laurence Gulliver,Robert Ashton Murphy
申请号：
US14746518
公开号：
US09993146B2
申请日:
2015.06.22
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A warming device (30) for warming the lens portion (2) of an optical instrument (I), such as a laparoscope, to a temperature above ambient to prevent lens fogging comprising: a double walled cylindrical tube (3) having an intemal wall (3b), and an external wall (3a), an upper surface and an open distal portion (7) with a central cavity (4) therebetween a protrusion (9) extending from said upper surface, sized and shaped to receive the lens portion a circular cap (5) sized to attach to said distal portion of said double walled cylindrical tube and, a heating element (15) enclosed within said central cavity and thermally coupled to said insulation layer.
