Arrangement for a bladed surgical instrument

A robotic surgical instrument comprising:

• an end effector with opposing first and second end effector elements, each end effector element comprising a first portion for enabling rotation of that end effector element about a respective joint and a second portion with a surface configured to interface with a corresponding surface of the opposing end effector element;
• and
• an articulation comprising:
• a first joint permitting rotation of the first end effector element about a first axis, the first joint being drivable by a first pair of driving elements;
• a second joint permitting rotation of the second end effector element about a second axis, the second joint being drivable independently from the first joint by a second pair of driving elements;
• and
• a supporting body comprising opposing first and second tines within which the first portions of the first and second end effector elements are permitted to rotate;
• wherein the first portion of the first end effector element is proximal to the first tine, and the second portion of the first end effector element is proximal to the second tine.