Abstract: A lighting device using a fluorescent lamp adapted to be powered from a low voltage direct current source. Operation of the lamp is facilitated by the inclusion of a stabilized blocking oscillator circuit which provides high voltage alternating current for ignition and operation of the lamp as well as power for operating the filamentary heaters when included in the lamp. Operation at a very high frequency improves the efficiency of the fluorescent lamp, thus providing greater light output.

Abstract: A therapeutic laser radiation applicator including a laser energy radiator, a fresnel lens, and structure for mounting the fresnel lens in preselected association with the laser radiator for refracting a portion of the laser radiation to a preselected beam configuration adapted to provide a therapeutic tissue irradiation pattern. The support is preferably flexible to accommodate the applicator to the surface configuration of the tissue to be treated. The fresnel lens elements are preferably formed of a flexible material and, in the illustrated embodiment are formed integrally in a sheet of light-transmissive synthetic resin. The fresnel lens structure may comprise one or more fresnel lens elements in series light-diffracting relationship.

Abstract: An electrical inhibitor system is disclosed for suppressing the application of transcutaneous nerve stimulator (TNS) signals during the T-wave portion of a heartbeat. The system includes a sensing circuit which is coupled to detect the R-S waveform produced by the heart during its normal beating pattern. Upon detection of the R-S portion of the waveform, an electrical signal is produced and coupled to timing circuitry to produce a timing signal having a duration in excess of the normal period of the T-wave portion of the heartbeat. The timing signal is to inhibit the output of a transcutaneous nerve stimulator during the T-wave portion of the heartbeat. When the inhibiting circuit and transcutaneous nerve stimulator are coupled to a patient, the system provides an inhibiting signal beginning during the R-S portion of the waveform and extending through the T-wave portion of the hearbeat to prevent application of the output from the transcutaneous nerve stimulator during the vulnerable period of the heart.

Abstract: A disposable electrode pad is provided for a defibrillator electrode. The pad is saturated with electrically conductive greasy material, sometimes known as electrogel. The pad is designed for adhesive or other securing to the electrode, and the pad is covered with a tear-off aluminum sheet cover to protect the integrity and sanitation of the pad, while still allowing sufficient electrical conductivity for monitoring a patient's heartbeat through the electrode.

Abstract: Electronic defibrillating mechanism in which the electrodes comprise handles to be grasped by an operator with electrodes in the form of discs to be placed against the chest of the patient. The handles are provided with push buttons, and a neon ready-light is provided in each push button to indicate when the apparatus is charged to the desired extent for the operator to effect a defibrillating discharge.