Surgical tool end effectors with replaceable blades

A method of replacing blades of an end effector of a surgical tool, comprising:

• moving the end effector distally from an assembled state, where the end effector is rotatably mounted to a clevis of a wrist of the surgical tool, to an extended state, where an axle of the end effector is dislodged from open-ended slots defined in opposing first and second arms of the clevis, the end effector including:
• opposing first and second blades;
• and
• first and second blade holders rotatably mounted to the axle, the first blade being mounted to the first blade holder, and the second blade being mounted to the second blade holder;
• separating the first and second blade holders from the first and second blades in opposing lateral directions until the first and second blade holders are removed from the axle;
• removing the first and second blades and the axle from remaining portions of the end effector;
• assembling a new blade set comprising first and second new blades and a new axle;
• mounting the first and second blade holders to the new axle and thereby mounting the first and second new blades to the first and second blade holders, respectively;
• and
• moving the end effector proximally and back to the assembled state by receiving the new axle within the open-ended slots.