Abstract: A surgical device particularly directed toward the endoscopic repair of inguinal hemas is disclosed. The device includes of a specially adapted surgical mesh and a mechanical means for attaching the surgical mesh to the pubic bone. The surgical mesh is mechanically attached to the pubic bone by an orthopedic screw and the peripheral margins of the mesh either sutured or stapled to the appropriate anatomical structures. The screw is held by the distal end of an inner tube which is positioned inside an outer tube providing an annular space therebetween. The surgical mesh is wrapped around the distal end of the inner tube and the screw and is held in place in the annular space. An actuator tool is placed in the inner tube to provide torque to the screw.

Abstract: A method and apparatus for detecting hydrogen sulfide with improved longevity. The hydrogen sulfide detector includes a semiconductor comprised of indium oxide attached to an inert substrate. A noncontinuous film of an inert conductor such as gold is deposited on the semiconductor and means are provided for measuring a change in conductance of the semiconductor. In one embodiment tin oxide may be substituted for indium oxide. Also a method of detecting hydrogen sulfide including the steps of: coating a semiconductor with a noncontinuous film of an inert conductor, maintaining the temperature of the semiconductor in a range sufficient to insure proper response and recovery actions of the semiconductor when it is exposed to hydrogen sulfide; and exposing the coated semiconductor to a gas containing hydrogen sulfide while measuring the change in conductance in the semiconductor. The semiconductor may be made up of tin oxide or indium oxide and the inert semiconductor may be gold.