A tissue property sensing system , comprising: an adapter assembly including a drive interface ; a drive screw coupled to the drive interface and extending from the adapter assembly; and a sensing assembly movable along the drive screw, the sensing assembly including: an outer shaft ("OS"); an anvil supported on a distal portion of the outer shaft; a center drive movable within the outer shaft and defining a longitudinal bore ("B"); a piston movable within the outer shaft and including a distal arm having a distal portion, and a head extending from the distal portion of the distal arm, the piston being movable within the outer shaft to move the head in relation to the anvil between an open configuration and a closed configuration, wherein the head of the piston and the anvil are configured to clamp and occlude blood flow in tissue in the closed configuration; one or more sensors configured to sense one or more of the tissue properties; and a tension spring coupled to the center drive and to the piston to urge the piston towards the center drive and to urge the head of the piston towards the anvil, characterized in that at least a portion of the tension spring is disposed within the longitudinal bore of the center drive, wherein the center drive supports a fixation pin that is disposed within the longitudinal bore, the tension spring being coupled to the fixation pin. an adapter assembly including a drive interface ; a drive screw coupled to the drive interface and extending from the adapter assembly; and a sensing assembly movable along the drive screw, the sensing assembly including: an outer shaft ("OS"); an anvil supported on a distal portion of the outer shaft; a center drive movable within the outer shaft and defining a longitudinal bore ("B"); a piston movable within the outer shaft and including a distal arm having a distal portion, and a head extending from the distal portion of the distal arm, the piston being movable within the outer shaft to move the head in relation to the anvil between an open configuration and a closed configuration, wherein the head of the piston and the anvil are configured to clamp and occlude blood flow in tissue in the closed configuration; one or more sensors configured to sense one or more of the tissue properties; and a tension spring coupled to the center drive and to the piston to urge the piston towards the center drive and to urge the head of the piston towards the anvil, characterized in that at least a portion of the tension spring is disposed within the longitudinal bore of the center drive, an outer shaft ("OS"); an anvil supported on a distal portion of the outer shaft; a center drive movable within the outer shaft and defining a longitudinal bore ("B"); a piston movable within the outer shaft and including a distal arm having a distal portion, and a head extending from the distal portion of the distal arm, the piston being movable within the outer shaft to move the head in relation to the anvil between an open configuration and a closed configuration, wherein the head of the piston and the anvil are configured to clamp and occlude blood flow in tissue in the closed configuration; one or more sensors configured to sense one or more of the tissue properties; and a tension spring coupled to the center drive and to the piston to urge the piston towards the center drive and to urge the head of the piston towards the anvil, characterized in that at least a portion of the tension spring is disposed within the longitudinal bore of the center drive, wherein the center drive supports a fixation pin that is disposed within the longitudinal bore, the tension spring being coupled to the fixation pin. <EOS>