Encapsulated catheter with friction-reducing skids

An end effector of a medical device, the end effector comprising:

• a framework;
• a flexible circuit comprising a plurality of electrodes;
• an insulative material defining a first lumen, the framework and the flexible circuit being disposed on the insulative material, and the insulative material comprising:
• a first sheet of insulative material comprising a first surface and a second surface;
• and
• a second sheet of insulative material comprising a first surface and a second surface,
• the second surface of the first sheet and the second surface of the second sheet being joined such that the first lumen is defined at least partially by the second surface of the first sheet and the second surface of the second sheet.

An end effector of a medical device, the end effector comprising:

• a first framework;
• a second framework;
• a first flexible circuit disposed between the first framework and the second framework and comprising a plurality of first electrodes;
• and
• an insulative material,
• the first framework, the second framework, and the first flexible circuit being at least partially encapsulated by the insulative material.