Abstract: A mini syringe includes a tubular base member, a microneedle unit including a microneedle device and a compressible pharmacy housing device and mounted in the bottom side of the base member, a plunger mounted in the base member and pressable to compress the pharmacy housing device, and an adjustment cover threaded onto the base member for controlling the moving distance of the plunger in a micro-adjustable manner.

Abstract: A mini syringe includes a tubular base member, a microneedle unit including a microneedle device and a compressible pharmacy housing device and mounted in the bottom side of the base member, a plunger mounted in the base member and pressable to compress the pharmacy housing device, and an adjustment cover threaded onto the base member for controlling the moving distance of the plunger in a micro-adjustable manner.

Abstract: A heat exchange system includes a water flow casing shaped like an open box and having a flow space defined therein and water inlet/outlet pipes for guiding a water into the flow space or for guiding the water out of the flow space, a thermoelectric cooling chip fastened to the open side of the water flow casing with the cold side facing toward the flow space for cooling the water, a heat dissipating unit fastened to the opposing hot side of the thermoelectric cooling chip for dissipating heat from the thermoelectric cooling chip, and a water pump adapted for pumping the water through the water inlet/outlet pipes and flow space of the water flow casing for cooling.

Abstract: A biological sensing device for sensing and estimating the presence of quantity of living things in a sensing space is disclosed to include a controller, a microprocessor, a power source and a sensing unit including an electrode set for creating electrostatic coupling in the sensing space and a sensor controlled by the controller to sense a capacitance change in the sensing space indicative of the presence and quantity of living things in the sensing space and to transmit a corresponding signal to the microprocessor for computing so that the microprocessor can estimate the presence and quantity of living things in the sensing space.

Abstract: A medical catheter control valve includes a valve body defining a fluid channel and a single open-end hole extended across the fluid channel, and a click-on mechanism consisting of a plunger unit with a through hole and a spring member and mounted in the single open-end hole. When click the plunger unit, the plunger unit is shifted to keep the through hole in alignment with the fluid channel for allowing a fluid to pass through the fluid channel. When push back the plunger unit, the through hole is deviated from the fluid channel and the fluid channel is blocked. Thus, the medical catheter control valve can be conveniently controlled with one single hand.

Abstract: A medical catheter control valve includes a valve body defining a fluid channel and a single open-end hole extended across the fluid channel, and a click-on mechanism consisting of a plunger unit with a through hole and a spring member and mounted in the single open-end hole. When click the plunger unit, the plunger unit is shifted to keep the through hole in alignment with the fluid channel for allowing a fluid to pass through the fluid channel. When push back the plunger unit, the through hole is deviated from the fluid channel and the fluid channel is blocked. Thus, the medical catheter control valve can be conveniently controlled with one single hand.