Abstract: A portable laser surgery evacuator includes an aspirator contained in the same housing which is positionable in an operating room near a surgical site. Surgical plume is evacuated from the site by vacuum, filtered through moisture, purifying and particle filters, chemically deodorized, and exhausted in cleaned form into the operating room environment. Fluid containing liquid is aspirated by pumping to a collector bag hung on a hose of the evacuator. Gaseous plume components of the fluid are vented from the collector to the evacuator to be cleaned with the plume. The venting is provided by a hose joining the evacuator inlet hose at a Venturi like connection. The evacuator includes a symmetrical reversible charcoal filter having a moisture absorbing cellulose filter at each end. A disposable aspirator pump of the rotating impeller type mounts on a motor shaft extending through the housing and is restrained against rotation by fixed hooks against which the pump fittings are urged by the torque of the motor.

Abstract: A two part system for fastening a dental prosthesis to the jaw bone having as a first part, an externally threaded thin wall sleeve which resides entirely within the jaw bone. The threads or other surface features are confined to the area near the point where the prosthesis enters the jaw bone. The sleeve has integrally, or accommodates, a non-threaded stem which extends relatively deeply into the jaw bone. The inner bore of the sleeve is a cone of a mechanically self locking taper. The second part, which extends outwardly from the jaw bone through the gum tissue, has a mating external taper which is driven within the sleeve to be locked therein. The second part supports an artificial tooth, bridge or other dental appliance. The concept also is applicable to a prosthetic device for any body joint.

Abstract: A joint prosthesis for fixation to the bone having a joint motion element and a stem attached thereto and extending into the central canal of the bone into which the prosthesis is to be fixed. That part of the prosthesis at the end of the bone located near the joint motion element defining an external geometric pattern of elongated projections spaced circumferentially around the prosthesis which engages with the bone when implanted thereby establishing a tight fit between the prosthesis and the bone.