Abstract: A filtration system for collecting bone fragments during surgery performed on a patient includes a cylinder having a rotating disk with circumferential arms extending radially in the cylinder to define pockets. The rotating disk includes a longitudinal hub that carries an outlet connected to a central passageway formed in the disk. A plurality of apertures on the disk permit the liquid to flow into the passageway and through the outlet while the pockets retain the bone fragments. The disk is rotated to align circumferential spaced pockets to align with the inlet and outlet ports. The disks includes bearing surfaces that permit the rotation thereof and the arms are spaced from the cylinder inner surface to allow the flow of fluid in the event the pockets fill and clog the apertures and prevent flow into the outlet passage.

Abstract: Rotary motion is converted into linear motion for a surgical instrument, such as a saw, by mechanically connecting the eccentric shaft portion of an off set shaft driven by the rotary motor to a drum having a collet interconnected by a yoke. The eccentric shaft portion of the off set shaft includes a bearing and spherical ring disposed between the eccentric shaft portion and the bifurcated arms of the yoke and through a radially extending projection fitted into a hole in the drum drives the drum in a rectilinear motion.

Abstract: A hand-held directional irrigation tube and a suction tube surgical instrument includes a finger or thumb operated aperture on the suction tube communicating with the lumen thereof that serves to selectively by-pass and connect the suction pump with the surgical site and the irrigation tube being removably supported in a sleeve attached to the suction tube that includes a gear-like member having circumferentially spaced valleys or slots attached to the sleeve cooperating with a projection attached to the irrigation tube so that the surgeon can slide the irrigation tube to disengage the projection and rotate it and re-insert it into another slot in the gear-like member to re-direct the spray of irrigation fluid egressing from the irrigation tube to different locations in the surgical site.