An end effector assembly of a tissue-resecting device, the end effector assembly comprising: an outer shaft including a hub housing disposed about a proximal end portion thereof; an inner shaft disposed within and rotatable relative to the outer shaft, the inner shaft including a sun gear disposed about a proximal end portion thereof; and a drive assembly rotatably disposed within the hub housing, the drive assembly including: a first driver rotatably disposed about the inner shaft distally of the sun gear; a second driver rotatably disposed about the inner shaft proximally of the sun gear; a plurality of planetary gears radially disposed about the sun gear in meshed engagement therewith, each planetary gear of the plurality of planetary gears rotatably mounted on a post extending between the first and second drivers (184, 182); and a locking clip positioned proximally of the plurality of planetary gears and the sun gear, rotationally keyed to the second driver, and engaged with the first driver via at least one snap-fit engagement to thereby retain the first and second drivers (184, 182) and the plurality of planetary gears in operable engagement with one another and the sun gear such that a rotational input provided to the second driver drives rotation of the first driver, the plurality of planetary gears, and the sun gear to thereby drive rotation of the inner shaft. an outer shaft including a hub housing disposed about a proximal end portion thereof; an inner shaft disposed within and rotatable relative to the outer shaft, the inner shaft including a sun gear disposed about a proximal end portion thereof; and a drive assembly rotatably disposed within the hub housing, the drive assembly including: a first driver rotatably disposed about the inner shaft distally of the sun gear; a second driver rotatably disposed about the inner shaft proximally of the sun gear; a plurality of planetary gears radially disposed about the sun gear in meshed engagement therewith, each planetary gear of the plurality of planetary gears rotatably mounted on a post extending between the first and second drivers (184, 182); and a locking clip positioned proximally of the plurality of planetary gears and the sun gear, rotationally keyed to the second driver, and engaged with the first driver via at least one snap-fit engagement to thereby retain the first and second drivers (184, 182) and the plurality of planetary gears in operable engagement with one another and the sun gear such that a rotational input provided to the second driver drives rotation of the first driver, the plurality of planetary gears, and the sun gear to thereby drive rotation of the inner shaft. a first driver rotatably disposed about the inner shaft distally of the sun gear; a second driver rotatably disposed about the inner shaft proximally of the sun gear; a plurality of planetary gears radially disposed about the sun gear in meshed engagement therewith, each planetary gear of the plurality of planetary gears rotatably mounted on a post extending between the first and second drivers (184, 182); and a locking clip positioned proximally of the plurality of planetary gears and the sun gear, rotationally keyed to the second driver, and engaged with the first driver via at least one snap-fit engagement to thereby retain the first and second drivers (184, 182) and the plurality of planetary gears in operable engagement with one another and the sun gear such that a rotational input provided to the second driver drives rotation of the first driver, the plurality of planetary gears, and the sun gear to thereby drive rotation of the inner shaft.