Grasping cap for over-the-scope applications

A method for treating tissue, comprising:

• mounting an end cap over a distal end of a scope device and inserting the distal end of the scope device, with the end cap in a closed configuration, to a target area within a body lumen to be treated, the end cap including a proximal portion defining a proximal channel therein and a distal portion including a plurality of flaps, a proximal end of each of the flaps pivotally coupled to the proximal portion, the plurality of flaps contacting one another to define a distal channel therebetween, in the closed configuration;
• moving the end cap from the closed configuration toward an expanded configuration by pivoting the flaps relative to the proximal portion so that distal ends of the flaps are moved away from one another to expand a distal opening of the proximal channel, the end cap movable between the closed configuration and the expanded configuration by moving a plurality of control members relative to the scope device, a distal end of each of the control members including a ball received within a correspondingly shaped socket of a yoke component that is connected to the corresponding one of the plurality of flaps;
• moving the end cap from the expanded configuration toward the closed configuration, via the control members and sliding an over-the-scope clip, positioned over the proximal portion of the end cap, distally off of the end cap.