Abstract: A portable infusion device includes a disposable syringe which is located in a removable section of a compact package that comprises the device. In order to conserve space, a flexible piston rod assembly is provided wherein the syringe plunger head is connected to a thin flexible plunger stem which is reversely bent about the upstream end of the syringe body so that the outer end of the stem lies directly adjacent and parallel to the syringe body. A small motor located in the non-removable portion of the package drives the plunger through a screw which sequentially engages closely spaced teeth on the face of the plunger stem as it moves along the outer surface of the syringe. When the syringe contents have been discharged, the removable section, including the syringe and plunger stem assembly, can be readily removed and replaced.

Abstract: Continuous wave (CW) output power from a gas transport laser is substantially increased by disposing a plurality of parallel cylindrically tubular cathodes in the main stream transversely of the direction of gas flow and spaced above a coextensive segmented anode in the opposite wall of the channel. Ballast resistors are connected between the cathodes, respectively, and the power supply to optimize the uniform arcless distribution of current passing between each cathode and the anode. Continuous output power greater than 3 kw is achieved with this electrode configuration.

Abstract: Continuous wave (CW) output power from a gas transport laser is substantially increased without arcing by the use of a tubular cathode having a racetrack-shaped cross section and disposed in the main stream of gas flow through the laser channel transversely of the direction of flow and spaced above and upstream from a coextensive segmented anode in the opposite wall of the channel. The racetrack-shaped cross-sectional configuration of the cathode provides maximum electrode surface for generating a glow mode electric discharge and also induces turbulence at that surface so as to support high current densities without arcing. Continuous output power greater than 3.5 KW is achieved with improved efficiency with this electrode configuration.