Medical device with an end effector including connecting hubs and an electrode array

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

• a plurality of spines extending along a longitudinal axis and configured to move between an expanded configuration and a collapsed configuration, each spine comprising a proximal end and a distal end;
• a plurality of electrodes connected to each spine;
• a connecting hub defining a hub lumen and comprising a first terminal end, a second terminal end, and a plurality of recesses that are radially disposed about an outer circumferential surface of the connecting hub and extend parallel to the longitudinal axis, each recess of the plurality of recesses being open along the longitudinal axis at or proximal the first terminal end, each recess of the plurality of recesses mating with one of the proximal end and the distal end of a respective spine of plurality of spines to prevent relative movement between the connecting hub and the spine, adjacent recesses of the plurality of recesses defining a T-shaped formation therebetween, each recess of the plurality of recesses spacing adjacent T-shaped formations, opposing upper lateral sides of each T-shaped formation each defining a groove, with adjacent grooves of adjacent T-shaped formations forming a groove pair, each groove pair being disposed above the respective recess of the plurality of recesses that spaces the respective adjacent T-shaped formations;
• a respective electrical tube cooperatively received in each groove pair radially aligned with a respective end of a respective spine of the plurality of spines mated in a respective recess of the plurality of recesses;
• and
• an actuator member connected to the connecting hub and the plurality of spines so that translation of actuator member along the longitudinal axis moves the spines from the expanded configuration to the collapsed configuration.