Abstract: A medical system is provided comprising a medical device including a handle and a mechanism for moving a distal end of the medical device; an auxiliary medical device comprising a basket retrieval device including a basket sheath disposed over a basket wire and received into a working channel of the medical device; a knob assembly in communication with the basket retrieval device, the knob assembly rotatable so that the basket sheath, wire, or both move within the working channel; and a base removably connecting the auxiliary medical device to the handle wherein the handle and the base are configured to be simultaneously gripped with a hand, and wherein the mechanism is configured to be moved with a first finger to move the distal end of the medical device and the knob assembly is configured to be rotated with a second finger to move the basket sheath wire, or both.

Abstract: An endoscope including an insertion tube, a working, channel located within the insertion tube, and a protecting feature disposed within at least a portion, of the working channel The protecting feature may be adapted to protect the working-channel from thermal damage and/or from mechanical damage caused by a medical instrument located in the working channel. The protecting feature may be adapted to determine presence or absence of a medical instrument within the working channel, arid/or a location of the medical instrument within the working channel.

Abstract: An endoscope including an insertion tube, a working, channel located within the insertion tube, and a protecting feature disposed within at least a portion, of the working channel The protecting feature may be adapted to protect the working-channel from thermal damage and/or from mechanical damage caused by a medical instrument located in the working channel.