A surgical instrument (10, 1010, 2010, 3010, 4010), comprising: a housing; a shaft extending distally from the housing; an end effector assembly (100, 1100, 3100, 4100) supported at the distal end of the shaft and including first and second jaw members (110, 120), at least one of the first or second jaw members movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween; a sheath (210, 1210, 2210, 3210, 4210) slidably disposed about the shaft and movable relative to the end effector assembly between a retracted position, wherein the sheath is positioned proximally of the first and second jaw members (110, 120), and an extended position, wherein the sheath is disposed about the first and second jaw members; and an energizable member (220, 2220, 3220) coupled to the sheath (210, 2210, 3210) and extending distally therefrom, the energizable member configured to move with the sheath between the retracted position, wherein the energizable member is positioned proximally of the first and second jaw members (110, 120), and an extended position, wherein the energizable member extends distally from the first and second jaw members, characterized in that the surgical instrument further comprises: a fluid port disposed on the housing, the fluid port configured to connect to a source of at least one of suction or irrigation; and an internal fluid line disposed within the housing and fluidly coupling the sheath with the fluid port, whereby the sheath (210, 1210, 2210, 3210, 4210) is configured to fluidly couple to a source of at least one of suction or irrigation to provide at least one of suction or irrigation at a surgical site. a housing; a shaft extending distally from the housing; an end effector assembly (100, 1100, 3100, 4100) supported at the distal end of the shaft and including first and second jaw members (110, 120), at least one of the first or second jaw members movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween; a sheath (210, 1210, 2210, 3210, 4210) slidably disposed about the shaft and movable relative to the end effector assembly between a retracted position, wherein the sheath is positioned proximally of the first and second jaw members (110, 120), and an extended position, wherein the sheath is disposed about the first and second jaw members; and an energizable member (220, 2220, 3220) coupled to the sheath (210, 2210, 3210) and extending distally therefrom, the energizable member configured to move with the sheath between the retracted position, wherein the energizable member is positioned proximally of the first and second jaw members (110, 120), and an extended position, wherein the energizable member extends distally from the first and second jaw members, characterized in that the surgical instrument further comprises: a fluid port disposed on the housing, the fluid port configured to connect to a source of at least one of suction or irrigation; and an internal fluid line disposed within the housing and fluidly coupling the sheath with the fluid port, whereby the sheath (210, 1210, 2210, 3210, 4210) is configured to fluidly couple to a source of at least one of suction or irrigation to provide at least one of suction or irrigation at a surgical site. a fluid port disposed on the housing, the fluid port configured to connect to a source of at least one of suction or irrigation; and an internal fluid line disposed within the housing and fluidly coupling the sheath with the fluid port, whereby the sheath (210, 1210, 2210, 3210, 4210) is configured to fluidly couple to a source of at least one of suction or irrigation to provide at least one of suction or irrigation at a surgical site.