Patent ID: 7691116

Claim:
A medical device assembly comprising: an expandable balloon having a central longitudinal axis; and an athertome assembly disposed on the expandable balloon, the athertome assembly comprising: at least one segment having at least one base member and at least one cutting member, the culling member having a first and a second side, at least a portion of the first side having a cutting surface, the at least one segment further having at least one descending member and at least one spanning member, a through hole being at least partially defined between the at least one descending member and the at least one spanning member; the at least one spanning member engaged at one end to the second side of the at least one cutting member and engaged at another end to the at least one base member; and the at least one descending member engaged at one end to the second side of the at least one cutting member and extending in the direction of the at least one base member but not being engaged to the at least one base member; wherein an imaginary plane perpendicular to the central longitudinal axis passes through the cutting member, the base member and the at least one descending member.