An adapter assembly for selectively interconnecting a surgical end effector that is configured to perform a function and a surgical device that is configured to actuate the end effector, the end effector including at least one axially translatable drive member, and the surgical device including at least one rotatable drive shaft, the adapter assembly comprising: - a housing configured and adapted for connection with the surgical device and to be in operative communication with each of the at least one rotatable drive shaft of the surgical device; - an inner housing tube having a proximal end supported by the housing, the inner housing tube defining an internal cavity and at least one aperture opening into the cavity, wherein the aperture provides an egress for fluid entering the cavity during at least one of a use and a cleaning of the adapter assembly; - a distal coupling assembly disposed at a distal end of the inner housing tube, wherein the distal coupling assembly is configured to selectively connect with the end effector; - at least one drive converter assembly for interconnecting a respective one of the at least one rotatable drive shaft of the surgical device and one of the at least one axially translatable drive member of the end effector, wherein the at least one drive converter assembly is at least partially disposed within the cavity of the inner housing tube, the at least one drive converter assembly including a drive tube at least partially disposed within the cavity of the inner housing tube, the drive tube including: a first end that is configured to be operably coupled to a first rotatable drive shaft of the surgical device; and a second end that is configured to be operably coupled to a first axially translatable drive member of the end effector; characterized in that the adapter assembly further comprises: - a plurality of seals disposed between the inner housing tube and the at least one drive converter assembly, wherein the plurality of seals includes a first seal interposed between the distal coupling assembly and the drive tube of the at least one drive converter assembly so as to prevent ingress of fluid into the cavity of the inner housing tube. - a housing configured and adapted for connection with the surgical device and to be in operative communication with each of the at least one rotatable drive shaft of the surgical device; - an inner housing tube having a proximal end supported by the housing, the inner housing tube defining an internal cavity and at least one aperture opening into the cavity, wherein the aperture provides an egress for fluid entering the cavity during at least one of a use and a cleaning of the adapter assembly; - a distal coupling assembly disposed at a distal end of the inner housing tube, wherein the distal coupling assembly is configured to selectively connect with the end effector; - at least one drive converter assembly for interconnecting a respective one of the at least one rotatable drive shaft of the surgical device and one of the at least one axially translatable drive member of the end effector, wherein the at least one drive converter assembly is at least partially disposed within the cavity of the inner housing tube, the at least one drive converter assembly including a drive tube at least partially disposed within the cavity of the inner housing tube, the drive tube including: a first end that is configured to be operably coupled to a first rotatable drive shaft of the surgical device; and a second end that is configured to be operably coupled to a first axially translatable drive member of the end effector; characterized in that the adapter assembly further comprises: - a plurality of seals disposed between the inner housing tube and the at least one drive converter assembly, a first end that is configured to be operably coupled to a first rotatable drive shaft of the surgical device; and a second end that is configured to be operably coupled to a first axially translatable drive member of the end effector; characterized in that the adapter assembly further comprises: - a plurality of seals disposed between the inner housing tube and the at least one drive converter assembly, - a plurality of seals disposed between the inner housing tube and the at least one drive converter assembly,