Device for supporting an endoscopic tool

A device for supporting an endoscopic tool, the device comprising:

• opposite first and second arms extending along a first axis from a proximal end to a distal end,
• an attachment system configured to attach the first arm and the second arm to an endoscope at the proximal end,
• a deployment system operable to translate the first and second arms relative to each other in a direction cross to the first axis to adjust a spacing between the first and second arms,
• a guide for the endoscopic tool coupled to the first arm, the guide comprising an outlet for launching the endoscopic tool,
• a tissue support surface provided on the second arm, facing the outlet, and
• a recess adjacent the tissue support surface,
• wherein the tissue support surface projects from the second arm in a direction transverse to the first axis,
• wherein the outlet is fixable or fixed in a working orientation relative to the first axis, and in the working orientation, the recess is configured to accept the endoscopic tool when launched from the outlet,
• wherein, in the working orientation, a centerline of the guide is curved between the proximal end and the outlet with a radius of curvature being at least 12.5 mm in a direction towards the tissue support surface, and
• wherein the tissue support surface is oriented at one or more second angles between 35° and 120° relative to the first axis.