Patent ID: 8029513

Claim:
A bone-tying cable tightening device for firmly tying objects to be tied, by pulling two arms extending from a knot of a cable tying the objects to be tied, comprising: a grip portion to be held with a hand, a rod-like member which extends forward from the grip portion, a knot-supporting means provided at the tip of the rod-like member to support the knot when the two arms are pulled, a sliding block mounted around the rod-like member in a longitudinally slidable fashion, which sliding block is provided with a cable-holding means to grip and hold the two arms together and is connected, via a tension transmitter means, to a pulling means installed in the grip portion, and an operation lever provided in the grip portion to drive the pulling means, wherein the knot-supporting means is of a structure which defines, above the rod-like member, (1) supporting faces on both sides thereof of which the two arms can be hooked away from each other and laterally relative to the longitudinal axis of the rod-like member, and/or (2) a slit or bore through which the two arms can be passed, and wherein the cable-holding means connected to the sliding block comprises (a) a longitudinal through groove defined in the upper part of the sliding block, (b) a locking recess which extends, at the rear end of the through groove, either transversing the through groove in the cross section thereof or including the cross section of the through groove along the central axis thereof, and whose width in the cross section thereof widens in the rearward direction, (c) a backward biased locking member about which the two arms are to be wound, and which is provided movably back and forth behind the locking recess on the upper side of the sliding block and so made that the forward movement thereof is blocked when it proceeds in the locking recess and abuts, with the side faces thereof, on the same.