Patent ID: 8579804

Claim:
A medical device adapted for insertion into a body of a patient for maintaining a passageway therein, the device comprising: a first hollow member having a proximal end, a distal end, and defining a lumen therethrough and a longitudinal axis, at least a portion of the proximal end configured to remain outside of the body; a second hollow member having a proximal end and a distal end and being disposable within the lumen of the first hollow member for slidable movement along the longitudinal axis of the first hollow member, the second hollow member defining a lumen sized to receive a medical instrument therethrough; and a wedge disposable within the lumen of the first hollow member, the wedge slides between positions including a first position in which the wedge is disposed entirely within the lumen of the first hollow member and is spaced from the second hollow member and a second position in which the wedge is disposed entirely within the lumen of the first hollow member and contacts the first hollow member and second hollow member to wedge the members together to inhibit relative axial movement of the two members.