1. An endoscope comprising: a) a fiber optic image bundle; b) a sleeve having proximal and distal ends and having a bore formed therein such that said fiber optic image bundle is insertible through the proximal end into said bore; c) a window formed proximate the distal end of said sleeve; d) a contractile member for biasing the distal end of said sleeve in the proximal direction so as to position the fiber optic image bundle in abutment with said window; and e) wherein said sleeve and said window isolate said fiber optic image bundle from a patient such that said fiber optic image bundle need not be sterilized prior to use.