Patent ID: 7828720

Claim:
A surgical system comprising: a device body including a working channel providing a pathway for an instrument; an extension adjuster engaged with said device body, the extension adjuster having a mounting bracket, a first extension member, and a second extension member; wherein the mounting bracket includes a wall member defined by a distal surface and a proximal surface; wherein the first extension member is defined by a distal end and a proximal end, the distal end being fixedly connected to the mounting bracket such that the first extension member extends from the mounting bracket in a proximal direction, away from proximal surface of the mounting bracket, the first extension member further comprising a passage extending therethrough; wherein the second extension member is defined by a distal end and a proximal end and includes an interior chamber, wherein the proximal end of the second extension member further includes an outer opening that is in communication with the interior chamber; wherein the first extension member is received within the interior chamber of the second extension member so as to mate the first and second extension members together such that the second extension member is selectively moveable over the first extension member; wherein the second extension member is disposed a predetermined distance from the working channel such that the second extension member and the distal end of the working channel cooperate to define an effective working channel length; and whereby the instrument may be inserted through the passage and working channel such that the instrument protrudes outwardly from the distal end of the working channel by a predetermined length, the extent of the protrusion limited by the effective working channel length whereby the second extension member prevents further insertion of the instrument.