Dilation catheter assembly with rapid change components

A dilation catheter system, wherein the dilation catheter system comprises:

• (a) a body;
• (b) a guide catheter extending from the body;
• and
• (c) an actuating assembly configured to translate relative to the body, wherein the actuating assembly comprises:
• (i) a grip slidably coupled with the body,
• (ii) a rotation knob rotatably coupled with the grip,
• (iii) a dilation catheter comprising a proximal end and an open distal end, wherein the dilation catheter is fixed to the grip, wherein the dilation catheter comprises an expandable dilator, wherein the dilation catheter defines a rapid exchange port,
• (iv) an inner lumen channel extending from the grip through the rotation knob, through the rapid exchange port, and to the open distal end,
• (v) a guidewire extending through the rapid exchange port out the open distal end of the dilation catheter, and
• (vi) a pair of locking members positioned in the inner lumen channel extending through the rotation knob configured to lock against the guidewire.

A dilation catheter system comprising:

• (a) a body;
• (b) shaft assembly extending from the body, wherein the shaft assembly comprises:
• (i) a catheter shaft, wherein the catheter shaft is configured to translate relative to the body,
• (ii) a dilator fixed to the catheter shaft, wherein the catheter shaft is configured to expand the dilator, and
• (iii) a removable guide member housed within the catheter shaft, wherein the removable guide member is substantially rigid;
• and
• (c) a guide member attachment assembly, wherein the guide member attachment assembly comprises a rotational arm configured to be operated by a user, wherein the rotational arm is configured to selectively fix the removable guide member relative to the body, wherein the catheter shaft is configured to translate along the removable guide member with the removable guide member fixed relative to the body.