Endoscopic Ultrasound-Guided Biliary Access System

A system for providing access to a vessel, the system comprising:

• an adjustable delivery handle system comprising:
• a delivery handle assembly, at least a portion of which comprises an inner lumen configured to receive one of a plurality of exchangeable subassemblies;
• and
• an inner hub housing coupled to a portion of the deliver handle assembly, the inner hub housing having a first plurality of radially-spaced barbs disposed on an inner diameter thereof;
• a sheath coupled to a distal end of the handle assembly and having a lumen in fluid communication with the inner lumen of the delivery handle assembly;
• and
• an access catheter subassembly removably disposed within the inner lumen of the delivery handle assembly and lumen of the sheath, the access catheter subassembly comprising:
• a catheter hub configured for insertion into the inner hub housing, the catheter hub having a second plurality of radially-spaced barbs disposed on an outer diameter thereof, wherein each of the second plurality of barbs are configured for selective engagement with a corresponding one of the first plurality of barbs to permit incremental rotation of the catheter hub relative to the inner hub housing;
• and
• an access catheter having an elongate tubular body having a proximal section having a proximal end, a distal section having a distal end, an outer surface, and an inner surface defining a lumen extending from the proximal end to the distal end,
• wherein the distal section of the access catheter is configured to incrementally rotate about a longitudinal axis defined by the lumen of the catheter body in conjunction with incremental rotation of the catheter hub.