A surgical instrument , comprising: a housing ; an elongated body portion extending distally from the housing , the elongated body portion defining a longitudinal axis; a tool assembly in mechanical cooperation with a distal end of the elongated body portion ; and a shroud comprising a proximal end , a distal end , a central body portion and having a rounded atraumatic distal configuration, the shroud being positioned on the elongated body portion and being movable between a first position in which a distal portion of the shroud extends beyond a distal end of the tool assembly and a second position in which the distal portion of the shroud is positioned proximal to the distal end of the tool assembly, wherein the distal end of the shroud includes a plurality of distal segments , having distal tips , which define a plurality of slits , the distal segments being flexible to facilitate movement of the shroud between the first and second positions, and wherein the proximal end of the shroud includes a plurality of flexible proximal segments which define a plurality of slits , the flexible proximal segments being outwardly flexible to facilitate positioning of the shroud on the surgical instrument , characterized in that the proximal end of the tool assembly has a diameter greater than the diameter of the distal end of the elongated body portion to form a ledge, the distal tips of the plurality of distal segments are configured to abut the ledge, such that the shroud is maintained on the surgical instrument upon movement between the first and second position and prevented from moving from the second position to the first position. a housing ; an elongated body portion extending distally from the housing , the elongated body portion defining a longitudinal axis; a tool assembly in mechanical cooperation with a distal end of the elongated body portion ; and a shroud comprising a proximal end , a distal end , a central body portion and having a rounded atraumatic distal configuration, the shroud being positioned on the elongated body portion and being movable between a first position in which a distal portion of the shroud extends beyond a distal end of the tool assembly and a second position in which the distal portion of the shroud is positioned proximal to the distal end of the tool assembly, wherein the distal end of the shroud includes a plurality of distal segments , having distal tips , which define a plurality of slits , the distal segments being flexible to facilitate movement of the shroud between the first and second positions, and wherein the proximal end of the shroud includes a plurality of flexible proximal segments which define a plurality of slits , the flexible proximal segments being outwardly flexible to facilitate positioning of the shroud on the surgical instrument , characterized in that the proximal end of the tool assembly has a diameter greater than the diameter of the distal end of the elongated body portion to form a ledge, the distal tips of the plurality of distal segments are configured to abut the ledge, such that the shroud is maintained on the surgical instrument upon movement between the first and second position and prevented from moving from the second position to the first position. <EOS>