Patent ID: 8065945

Claim:
A tissue cutting device configured for cutting a biological tissue into a predetermined thickness, the tissue cutting device comprising: an elongated handle; a head unit comprising a plurality of rectangular blades each having a cutting edge opposite a long side and a blade holding portion that holds the long side of each of the rectangular blades, wherein the rectangular blades are arranged such that the long sides extend substantially parallel to a longitudinal direction of the elongated handle at predetermined intervals and the cutting edges are positioned away from the blade holding portion by a sufficient distance such that the blades cut the biological tissue into the predetermined thickness; and a head holding part disjoint from the head unit and located at a distal end of the elongated handle, the head holding unit including a first engaging portion configured to receive a second engaging portion projecting from the blade holding portion perpendicular to the longitudinal direction and on a side of the blade holding portion opposite to the rectangular blades for detachably holding the head unit, such that the cutting edges of the plurality of rectangular blades are positioned directly and entirely below the head holding part and extend substantially parallel to the longitudinal direction when the first engaging portion has received the second engaging portion.