Abstract: An attachment for a rotating tool bit provides air flow in the vicinity of the work area without the need for separate vacuum or compressed air supplies. The device is mounted on the shaft of the rotating tool bit and provided with a plurality of vanes which direct airflow through a cylindrical housing towards or away from the work area. A central aperture provides resilient mounting of the attachment to the tool bit. The attachment is capable of providing suction as well as forced-air to the work area. A number of embodiments are disclosed for directing the exhausted air in different directions, depending on the application of the tool and operator orientation. A filter may be incorporated into the attachment in order to collect dust and debris carried away from the work area by the air flow.

Abstract: The surgical instrument of the invention consists of a pair of arms hinged together at an intermediate point for relative pivoting movement. The arms are provided with obliquely oriented handles at one end thereof. The opposite ends of the arms support removable posts having means for removably securing a plurality of different retractor or compressor heads thereto. The posts are pivotably connected to the arms to allow the posts to achieve a variety of orientations relative to the arms. A variety of retractor and compressor heads and different shaped posts are provided to allow the instrument to be used in a wide variety of surgical procedures. Separate serrated locking mechanisms are provided to lock the arms in either a retraction or compression position. In one embodiment the posts are secured to one another such that they undergo parallel retraction/compression.

Abstract: The surgical instrument consists of a pair of arms of different lengths hinged together at an intermediate point for relative pivoting movement. The arms are provided with obliquely oriented handles at one end thereof. The opposite ends of the arms support removable posts having means for removably securing a plurality of different surgical heads. A variety of heads and different shaped posts are provided to facilitate retraction in a wide variety of surgical procedures. A serrated locking mechanism is also provided to lock the arms in either a retraction or compression mode.