Patent ID: 7967789

Claim:
An insertion device with an insertion axis, comprising: an axial actuator with a first portion and a second portion, the first portion being moveable along the insertion axis relative to the second portion; a first tube coupled to the first portion of the axial actuator wherein the first tube is movable along the insertion axis in response to movement of the first portion relative to the second portion along the insertion axis; a second tube having a radially biased distal end, wherein: the distal end of the second tube is substantially contained within the first tube in a first state; the second tube is rotatable with respect to the first tube; and the second tube is axially movable to a second state, a portion of a distal end of the second tube being exposed from a distal end of the first tube in the second state; and an indexing system that allows rotational movement of the second tube relative to the first tube at discrete increments, the indexing system including at least an index engaging feature and at least one index slot that selectively receives the index engaging feature.