Patent ID: 7374295
Filing Date: 2008-05-20
Classification: A61B

Abstract:
1. A cover assembly for a lens of a surgical microscope, the cover assembly comprising: a cover element having a window section for passing a viewing beam path or an illuminating beam path of said surgical microscope; a holding device for holding said cover assembly on the lens of the surgical microscope; said cover element having a base in surrounding relationship to said window section thereof; said holding device having a receptacle for receiving said cover element so as to position said window section in front of said lens; said receptacle having a support surface for supporting said base when said cover element is seated in said receptacle; said receptacle further having a plurality of guide brackets formed on said holding device in spaced relationship to said support surface for holding said base on said support surface; said base having upper and lower surfaces and defining a predetermined substantially uniform first thickness over a substantial portion thereof; said base having a second thickness different from said first thickness; said second thickness being defined by said upper and lower surfaces of said base adjacent an edge portion thereof to facilitate an almost friction free sliding movement of said cover element into said receptacle between said support surface and said guide brackets; said guide brackets and said second thickness conjointly defining an interface; and, detent means formed at said interface for releasably holding said cover element in place in said receptacle when said cover element reaches its end position in said receptacle.