Adjustable instrument for dilation of anatomical passageway

An apparatus comprising:

• (a) an instrument body;
• (b) a shaft assembly extending distally from the instrument body;
• (c) a dilation catheter, wherein the dilation catheter is slidable relative to the shaft assembly, wherein the dilation catheter comprises an expandable dilator;
• (d) a guidewire, wherein the guidewire is slidable relative to the shaft assembly;
• (e) a guidewire rotation drive assembly, wherein the guidewire rotation drive assembly comprises:
• (i) a barrel member,
• (ii) a first end cap,
• (iii) a second end cap, and
• (iv) a plurality of rollers, wherein the guidewire is disposed within the barrel member and the end caps, wherein the rollers are configured to selectively grip the guidewire based on an angular position of the barrel member relative to the first and second end caps.

An apparatus comprising:

• (a) an instrument body;
• (b) a shaft assembly extending distally from the instrument body;
• (c) a dilation catheter, wherein the dilation catheter is slidable relative to the shaft assembly, wherein the dilation catheter comprises an expandable dilator;
• (d) a guidewire, wherein the guidewire is slidable relative to the shaft assembly;
• (e) an actuator assembly, wherein the actuator assembly is operable to translate the dilation catheter relative to the shaft assembly;
• and
• (f) a guidewire locking assembly fixedly secured to the instrument body, wherein the guidewire locking assembly is further configured to selectively lock the longitudinal position of the guidewire relative to the instrument body.