Scoring balloon catheter

An apparatus for treatment of a vessel lesion, the apparatus comprising:

• a catheter shaft having a proximal end portion and a distal end portion;
• a medical balloon coaxially mounted on the distal end portion of the catheter shaft, the medical balloon having a proximal end, a distal end and a body portion between the proximal end and the distal end of the medical balloon, the body portion having an exterior surface, wherein the medical balloon is configured to expand from a deflated condition to an inflated condition, and wherein the exterior surface, when in its inflated condition, has a varying radial cross-section along a length thereof;
• and
• a plurality of scoring wires each having a proximal end, a distal end, and a body portion therebetween, wherein the body portion of each scoring wire of the plurality of scoring wires is engaged with the exterior surface, and wherein, when the medical balloon is in the inflated condition, a portion of at least one of the plurality of scoring wires is configured to contact the vessel lesion with improved scoring force.

An apparatus for treatment of a vessel lesion, the apparatus comprising:

• a catheter shaft having a proximal end portion and a distal end portion and including an individual inflation lumen;
• a medical balloon coaxially mounted on the distal end portion of the catheter shaft, the medical balloon having a proximal end, a distal end and a body portion between the proximal end and the distal end of the medical balloon, the body portion having an exterior surface, wherein the medical balloon is configured to expand from a deflated condition to an inflated condition, and wherein the exterior surface, when inflated via the individual inflation lumen to the inflated condition, has a plurality of peaks and at least one valley therebetween;
• and
• a pair of diametrically opposed scoring wires each having a proximal end, a distal end, and a body portion therebetween, wherein the body portion of each of the diametrically opposed scoring wires is engaged with the exterior surface, and wherein, when the medical balloon is in the inflated condition, the diametrically opposed scoring wires are configured to contact diametrically opposed surfaces of the vessel lesion with improved scoring force.