Abstract: A method and apparatus for filling a shaft bored into human femoral bone during hip replacement surgery with gelatinous methyl methacrylate bonding cement for receipt of an artificial hip prothesis so as to maximally preventing loosening of the prosthesis after hardening of the cement consisting of a cylindrically shaped syringe gun unit screwed into a cylindrically shaped hollow head of a hollow cylindrical applicator tube to the exterior of which applicator tube near its tip there is affixed an inflatable balloon amenable to receipt of fluid by way of tubing passing through a distinct lumen of said applicator tube which said tubing is attached at one end to a hollow canal in the applicator tube leading via the lumen to the balloon and attached at its other end to a valvular component in turn attached to the cylindrical base of a second syringe gun unit which said apparatus serves to facilitate injection of such cement incrementally into relatively air tight spaces within such shaft formed in view of the inf

Abstract: What is hereof proffered is a method and apparatus for optically multiplexing together a plurality of optical modulation devices on a limited number of optical transmission paths utilizing electrically passive photoactivated optical switches. The switches have the characteristic that prior to illumination, an input channel is coupled to a specific output channel. Following illumination, after a characteristic time delay, t, a first switch activates so that the input channel is disconnected from the first output channel and connected to a second output channel. It remains connected to the second output channel until the illumination is removed at which time the input channel is disconnected from the second output channel and reconnected to the first output channel. The switches are arranged sequentially along an outwardly directed optical transmission path.

Abstract: A method and apparatus for applying methyl methacrylate under pressure into the top surface of a human tibial bone which apparatus is a solid molded one piece unit body with three rodlike extensions emanating from the body therefrom. A first rodlike extension has a solid cylindrically shaped head on its top side for receipt of a slaphammer and the long central axis of this extension is virtually co-axial with the long central axis of a second rodlike extension and sharp beveled end located at the base of the second rodlike extension just below a circular stop piece which beveled end for burrowing into bone is farther from the cylindrically shaped head than any other part of the one piece unit.

Abstract: The instant device serves to pierce and irrigate fluid filled tubing. It consists of an upper jaw and a lower jaw mounted on locking pliers. The upper jaw consists of an upper jaw mounting plate fastened to the upper jaw of the locking pliers and a piercing pin unit, along with a replaceable hollow press fit piercing pin held within such unit which piercing pin unit is held in the upper jaw mounting plate after the unit's insertion through a metallic washer locking cushion. The device's lower jaw consists of a lower jaw tube cradle component mounting plate fastened to the lower jaw of the locking pliers and further consists of a tube cradle component with eight cylindrically shaped notches for receipt of any one of six different sizes of cylindrically shaped tubing. The tube cradle component is held to the lower jaw tube cradle component mounting plate by way of a threaded retaining shoulder bolt.

Abstract: The instant invention encompasses the combination of a modified electric guitar component coupled with a plurality of equivalent one-coil and equivalent two-coil transducer cradle components attached thereto upon which cradles, transducers are permanently mounted respectively. The transducer cradle components are readily amenable to detachment from and reattachment to the body of the electric guitar component and as well to speedy frontwise insertion into or frontwise removal from the modification of the electric guitar component, to wit, appropriately contoured openings in the front of the body of the electric guitar component below the level of intact guitar strings. Metallic contact rods on each cradle component receive transducer wiring emanating from a permanently mounted transducer and contact, upon insertion of a given cradle into a given opening, by way of contact points in the front wall of the opening, the internal wiring within the modified electric guitar component and ultimately, an amplifier.