Dilation catheter assembly with adjustment features

A dilation catheter system comprising:

• (a) a handle assembly comprising a body extending from a proximal end to a distal end;
• (b) a guide catheter;
• (c) a dilation catheter assembly comprising:
• (i) a shaft defining an inflation lumen and an injection lumen, wherein the shaft comprises a port assembly located proximally relative to the proximal end of the handle assembly;
• (ii) a dilator coupled with the shaft, wherein the dilator is in fluid communication with the inflation lumen, wherein the injection lumen terminates into an open end distal in relation to the dilator,
• (iii) an actuation member slidably attached to the handle, wherein the actuation member defines a central channel, wherein the actuation member comprises a plurality of longitudinal tracks extending on an outer surface of the actuation member, wherein the central channel is configured to couple with the shaft;
• and
• (d) a guidewire slidably disposed within the port assembly and the injection lumen of the dilation catheter, wherein the plurality of longitudinal tracks are configured to couple with the guidewire such that the actuation member and the guidewire actuate relative to the handle unitarily.

A dilation catheter system comprising:

• (a) a handle assembly comprising a body extending from a proximal end to a distal end;
• (b) a guide catheter configured to selectively couple with the handle assembly, wherein a proximal portion of the guide catheter extends along a longitudinal axis;
• (c) a dilation catheter assembly comprising:
• (i) a shaft defining an inflation lumen and an injection lumen, wherein the shaft comprises a port assembly located proximally relative to the proximal end of the handle assembly;
• (ii) a dilator coupled with the shaft, wherein the dilator is in fluid communication with the inflation lumen, wherein the injection lumen terminates into an open end distal in relation to the dilator, and
• (iii) an actuation member slidably attached to the handle;
• (d) a guidewire slidably disposed within the port assembly and the injection lumen of the dilation catheter;
• and
• (e) a guide catheter locking assembly, wherein the guide catheter locking assembly is configured to transition between a locked position and an unlocked position, wherein the guide catheter is configured to rotate about its own longitudinal axis relative to the handle assembly into any angular position when the guide catheter locking assembly is in the unlocked position, wherein the guide catheter locking assembly is configured to fix the guide catheter relative to handle assembly in the locked position while the guide catheter is in any angular position relative to the handle assembly.