Abstract: Described are a method and device for needleless injection of a liquid substance in the skin or other target tissue of a patient, in which droplets of the liquid substance are produced, and the droplets of liquid substance are directed toward the surface of the patient's skin or other target tissue at a velocity sufficiently high to inject the droplets of liquid substance in the patient's skin or other target tissue. The droplets of the liquid substance are accelerated toward the surface of the patient's skin or other target tissue in order to inject the accelerated droplets of liquid substance in the patient's skin or other target tissue.

Abstract: A sensor array for measuring various parameters in a machine environment, the sensor array comprising a number of oscillators, each of the oscillators comprising a feedback network, an amplifier and a limiter being connected together in a loop. The feedback network has a frequency which varies with the parameters to be measured. The amplifier consumes a current from a current supply and in cooperation with the feedback network produces a signal that alternates at the natural frequency of the feedback network. The limiter limits the amplitude of the signal within a predetermined amplitude range. All of the signals from the oscillators are multiplexed onto the output of the sensor array. Frequency analysis may then used to isolate the individual readings from each of the oscillators.

Abstract: An engine for providing rotary power about an output shaft with a high power-to-weight ratio includes a plurality of flow guiding blades mounted on the inner surface of an annular thruster base. The flow guiding blades cooperate with the peripheral surface of a rotor for forming a plurality of ramjet-like thrusters. The configuration of the flow guiding blades allows for optimization of the number of thrusters. The centrifugal forces generated by the rotating components is compensated by an annular reinforcement wall made with high strength materials allowing for downsizing of the rotor and associated components.

Abstract: A needleless syringe for subcutaneously delivering a therapeutic agent comprising a generally constant diameter elongate tubular nozzle and an inert gas reservoir thereto is described herein. The reservoir is advantageously mounted to the upstream end of the tubular nozzle through a contraction that is either gradual or sudden and wherein a membrane is positioned between the reservoir and the therapeutic agent.

Abstract: The present invention is concerned with a vacuum release suction device for regulating and controlling suction in an aspiration line, and which may be included in aspirators such as for example dentistry, surgery, or cosmetic tools. When operated, such tools generally generate noise which may become harmful to the tool user or for the patient on which the tool is used. More specifically, the suction device of the present invention includes a body having an inlet port and an outlet port defining a chamber in the body and a bypass inlet intersecting the chamber at an acute angle with respect to the longitudinal axis of the chamber, such that a main fluid stream is generated with minimized occurrences of flow separation, turbulence and therefore minimized generated aerodynamic noise.

Abstract: A portable rest device for a laptop computer is made of a thermally-conductive material, and comprises a top face for receiving the laptop computer and a bottom heat-dissipating three-dimensional pattern. Due to this design, the portable rest device dissipates 1) the heat generated by the laptop computer and captured by the top face, and 2) the heat generated by the user when the bottom heat-dissipating three-dimensional pattern is disposed on the user's lap.

Abstract: A sensor array for measuring various parameters in a machine environment, the sensor array comprising a number of oscillators, each of the oscillators comprising a feedback network, an amplifier and a limiter being connected together in a loop. The feedback network has a frequency which varies with the parameters to be measured. The amplifier consumes a current from a current supply and in cooperation with the feedback network produces a signal that alternates at the natural frequency of the feedback network. The limiter limits the amplitude of the signal within a predetermined amplitude range. All of the signals from the oscillators are multiplexed onto the output of the sensor array. Frequency analysis may then used to isolate the individual readings from each of the oscillators.

Abstract: The present invention is concerned with a vacuum release suction device for regulating and controlling suction in an aspiration line, and which may be included in aspirators such as for example dentistry, surgery, or cosmetic tools. When operated, such tools generally generate noise which may become harmful to the tool user or for the patient on which the tool is used. More specifically, the suction device of the present invention includes a body having an inlet port and an outlet port defining a chamber in the body and a bypass inlet intersecting the chamber at an acute angle with respect to the longitudinal axis of the chamber, such that a main fluid stream is generated with minimized occurrences of flow separation, turbulence and therefore minimized generated aerodynamic noise.

Abstract: A portable rest device for a laptop computer is made of a thermally-conductive material, and comprises a top face for receiving the laptop computer and a bottom heat-dissipating three-dimensional pattern. Due to this design, the portable rest device dissipates 1) the heat generated by the laptop computer and captured by the top face, and 2) the heat generated by the user when the bottom heat-dissipating three-dimensional pattern is disposed on the user's lap.

Abstract: An engine for providing rotary power about an output shaft with a high power-to-weight ratio includes a plurality of flow guiding blades mounted on the inner surface of an annular thruster base. The flow guiding blades cooperate with the peripheral surface of a rotor for forming a plurality of ramjet-like thrusters. The configuration of the flow guiding blades allows for optimization of the number of thrusters. The centrifugal forces generated by the rotating components is compensated by an annular reinforcement wall made with high strength materials allowing for downsizing of the rotor and associated components.

Abstract: A needleless syringe for subcutaneously delivering a therapeutic agent comprising a generally constant diameter elongate tubular nozzle and an inert gas reservoir thereto is described herein. The reservoir is advantageously mounted to the upstream end of the tubular nozzle through a contraction that is either gradual or sudden and wherein a membrane is positioned between the reservoir and the therapeutic agent.

Abstract: The present invention is a noise reducing aspirator which is used to carry away air, water, saliva, dental debris from the mouth of a patient or surgical debris. The present invention comprises an open-ended large solid tubular housing having one end adapted to be connected to a source of suction and the other end adapted to be connected to an aspirator tip which will collect air, water, saliva and dental debris. The housing has a sufficient internal ejecting tubular passageway between the ends to accommodate rapid flow of air, water, saliva and dental debris therethrough. The housing includes chamfered pressure venting tubes of equal diameter circularly distributed around, and connecting to, a main suction tube via slanted pathways. The pressure venting tubes reduce and harmonize the noise level of the aspirator and avoid discomforting suction to the patient's tissue. The ends of the housing are designed to secure an aspirator tip or to a source of suction and are designed for easy removal and replacement.