1) Celioscope 2) Coeloscope 
<instrument> Rarely used term for an optical device for examining the interior of a body cavity. ... Origin: G. Koilos, hollow, + skopeo, to view ... (05 Mar 2000) ... 
Type: Term Pronunciation: sē′lō-skōp Definitions: 1. Rarely used term for an optic device for examining the interior of a body cavity.
celoscope An instrument for examining a body cavity.
an instrument for examining a body cavity.