Stent delivery catheter positioning device

A hub assembly, comprising:

• a first tubular element having a proximal end and a distal end with a lumen extending therethrough, the distal end of the first tubular element attaching to a first medical device;
• a second tubular element having a proximal end and a distal end with a lumen extending therethrough, the proximal end of the second tubular element receiving and engaging a second medical device;
• and
• a fine adjustment mechanism that extends or contracts the hub assembly from a first length to a second length, wherein at least a portion of the lumen of the first tubular element is non-circular.

A hub assembly, comprising:

• a first tubular element having a proximal end and a distal end with a lumen extending therethrough, the distal end of the first tubular element attaching to a first medical device;
• a second tubular element having a proximal end and a distal end with a lumen extending therethrough, the proximal end of the second tubular element receiving and engaging a second medical device;
• and
• a fine adjustment mechanism that extends or contracts the hub assembly from a first length to a second length, wherein at least a portion of the lumen of the second tubular element is non-circular.

A hub assembly, comprising:

• a first tubular element having a proximal end and a distal end with a lumen extending therethrough, the distal end of the first tubular element attaching to a first medical device;
• a second tubular element having a proximal end and a distal end with a lumen extending therethrough, the proximal end of the second tubular element receiving and engaging a second medical device;
• and
• a fine adjustment mechanism comprising a rack and pinion mechanism wherein the fine adjustment mechanism extends or contracts the hub assembly from a first length to a second length.

A catheter assembly for placing and positioning a medical device within a body, the catheter assembly comprising:

• a catheter shaft having a proximal end, a distal end and a lumen extending the length therethrough;
• a hub assembly having a lumen therethrough in fluid communication with the catheter shaft lumen, the hub assembly having a proximal end and a distal end, the distal end of the hub assembly affixed to the proximal end of the catheter shaft and the proximal end of the hub assembly permitting passage of additional medical devices therethrough and permitting engagement of the additional medical devices therewith;
• and
• a fine adjustment mechanism comprising a turnbuckle mechanism capable of extending or contracting the hub assembly from a first length to a second length.

A catheter assembly for placing and positioning a medical device within a body, the catheter assembly comprising:

• a catheter shaft having a proximal end, a distal end and a lumen extending the length therethrough;
• a hub assembly having a lumen therethrough in fluid communication with the catheter shaft lumen, the hub assembly having a proximal end and a distal end, the distal end of the hub assembly affixed to the proximal end of the catheter shaft and the proximal end of the hub assembly permitting passage of additional medical devices therethrough and permitting engagement of the additional medical devices therewith;
• and
• a fine adjustment mechanism comprising a rack and pinion mechanism.