Balloon catheter including tensioning member

A catheter comprising:

• a balloon having a proximal waist, a distal waist and a body portion extending therebetween;
• an outer elongate member having a proximal end region, a distal end region and a lumen extending therein, wherein the distal end region is coupled to the proximal waist of the balloon;
• an inner elongate member extending within a portion of the lumen of the outer elongate member and the body of the balloon, wherein a distal end region of the inner elongate member is coupled to the distal waist of the balloon;
• a manifold coupled to the proximal end region of the outer elongate member;
• a tensioning member coupled to the proximal end region of the inner elongate member;
• wherein the tensioning member is spaced away from the manifold in a first configuration, wherein the tensioning member is configured to interlock with a portion of the manifold in a second configuration, and wherein translating the tensioning member from the first configuration to the second configuration imparts axial tension on the inner elongate member, the balloon or both the inner elongate member and the balloon during deflation of the balloon.

A method for treating a body vessel of a patient with a balloon catheter, the method comprising:

• advancing a catheter into a body vessel of a patient, the catheter comprising:
• a balloon having a proximal waist, a distal waist and a body portion extending therebetween;
• an outer elongate member having a proximal end region, a distal end region and a lumen extending therein, wherein the distal end region is coupled to the proximal waist of the balloon;
• an inner elongate member extending within a portion of the lumen of the outer elongate member and the body of the balloon, wherein a distal end region of the inner elongate member is coupled to the distal waist of the balloon;
• a manifold coupled to the proximal end region of the outer elongate member;
• and
• a tensioning member coupled to the proximal end region of the inner elongate member;
• translating the tensioning member relative to the manifold to impart axial tension on the inner elongate member and balloon;
• inflating the balloon within the vessel of the patient;
• and
• deflating the balloon while maintaining axial tension on the inner elongate member and balloon.