Endoscope and method of use

An endoscope for use with a tool, the endoscope comprising:

• an elongated shaft having a central axis extending from a proximal end to a working end;
• an image sensor by the working end;
• a channel extending from said proximal end to said working end, wherein a distal portion of the channel comprises a superior surface spaced from an inferior surface, the inferior surface having a living hinge, wherein a lateral sidewall comprising an elastomeric material allows the distal portion of the channel to have a first cross-sectional shape that provides an open pathway through the elongated shaft, and wherein advancement of the tool through the channel and against the superior surface and the inferior surface deflects the living hinge without deflecting the tool to expand the channel away from the image sensor to assume a second cross-sectional shape larger than the first cross-sectional shape such that the image sensor remains stationary upon assuming the second cross-sectional shape.