Patent ID: 7976557

Claim:
A method of preparing a cutting balloon comprising the steps of: providing a balloon body, the balloon body having an exterior surface and further having a flattened out state and an expanded state; and attaching a blade to the exterior surface of the balloon body by bringing the blade into engagement with the exterior surface of the balloon body when the balloon body is in the flattened out state; wherein in the flattened out state the exterior surface of the balloon body comprises a plurality of corner regions including a proximal top corner region, a proximal bottom corner region, a distal top corner region and a distal bottom corner region; wherein the blade comprises a first end and a second end, and wherein either the first end of the blade is positioned on the proximal top corner region and the second end of the blade is positioned on the distal bottom corner region, or the first end of the blade is positioned on the proximal bottom corner region and the second end of the blade is positioned on the distal top corner region.