Length and diameter adjustable balloon catheter

An adjustable balloon catheter comprising:

• an inner tubular member having a proximal end portion, a distal end portion, and a length therebetween, the inner tubular member further having an inflation lumen defined therein;
• an expandable member coupled to the distal end portion of the inner tubular member and having an inner chamber in fluid communication with the inflation lumen, the expandable member transitionable between a deflated configuration and an inflated configuration, the expandable member defining a longitudinal axis and a working length along at least a portion of the expandable member;
• and
• an outer tubular member having a distal end, the outer tubular member being moveable relative to the inner tubular member between an extended position disposed over the expandable member and a retracted position proximal to the extended position, the outer tubular member being selectively positioned to a selected position between the extended position and the retracted position to define an exposed length of the expandable member, wherein the inner tubular member has a first stiffness profile along the length thereof and the outer tubular member has a second stiffness profile along a length thereof,
• wherein the catheter has a stiffness profile along a length thereof corresponding to the distal end portion of the inner tubular member, the stiffness profile including a distal stiffness, an intermediate stiffness and a proximal stiffness, the stiffness profile being selectively adjustable by the selected position of the outer tubular member relative the inner tubular member, wherein
• when the outer tubular member is in the extended position, the intermediate stiffness is less than the proximal stiffness and the distal stiffness,
• when the outer tubular member is between the extended position and the retracted position, the intermediate stiffness increases and the distal stiffness decreases such that the intermediate stiffness and the distal stiffness are less than the proximal stiffness, and
• when the outer tubular member is in the retracted position, the proximal stiffness increases to be greater than the distal stiffness and the intermediate stiffness decreases to be less than the distal stiffness and the proximal stiffness.