US Patent 11744985 Steerable catheter system with hub

A steerable catheter having a hub with a control feature includes a semi-rigid catheter with the hub attached at the proximal end. The distal end of the catheter includes a distal tip and a flexible portion adjacent the distal tip. The catheter includes a working channel, and further includes a channel through which a tension member or wire extends to the distal tip. Tension in the wire causes the distal tip to deflect and be steered. The hub includes a fixed member attached to the catheter, an inner member that moves axially relative to the fixed member, and an outer member that rotates relative to the inner member and the fixed member. Rotation of the outer member results in translation of the inner member, which is attached to the tension member and provides for controlled steering of the distal tip.