A liquid introducing device transfers a fixed amount of liquid medicine into atomized particles. The liquid medicine is connected to the liquid introducing device which allows the users to quickly replace the bottles and avoid cross infection between different medicines. The liquid introducing device is powered by electric power to atomize the liquid quickly. The liquid introducing device includes a chamber which cooperated with an electro-magnetic valve switch which controls a fixed amount of air in the chamber such that the fixed amount of the air can be pressurized and output stably. The pressurized air passes through the tube without delay and loss.

A valve module includes a semiconductor body, cavities in the semiconductor body separated from each other by a distance, a cantilever structure suspended over each cavity to enable at least partial closing of the cavity, and a piezoelectric actuator for each cantilever structure. The piezoelectric actuator is configured for use to cause a positive bending of the respective cantilever structure and so modulate a rate of air flow through the valve module.

A hemostasis or bleed-back control valve such as a Tuohy-Borst adapter is provided that is capable of sensing pressure in vivo. The valve may include a main valve body having a lumen. An upstream main seal may be disposed in the lumen of the main valve body. A catheter fitting may be disposed at a downstream end of the main valve body. A pressure transducer may be in fluid communication with the lumen of the main valve body. Such devices may be suitable for exploratory or interventional medicine involving catheterization.

A protected port or catheter generally includes a cannula having at least one lumen and at least one access point in fluid communication with the at least one lumen. An access control mechanism controls fluid communication between the access point and the at least one lumen and is operable between closed and open positions. The access control mechanism may include a valve, a door, or a lockable cap. An actuator may be included for operating the access control mechanism between open and closed states. The actuator may be selectively operated by a control circuit. A power source may be provided to power the control circuit and actuator, if included.

An improved aerosol dispensing apparatus includes an aerosol container, a discharge piece movably mounted to the aerosol container, a flow control valve mounted within the discharge piece, a battery, and an electronically controlled metering valve electronically connected to the battery and in fluid communication with the flow control valve. The flow control valve is movable between an open position wherein a volume of an aerosol formulation is directed from the aerosol container through the flow control valve to the metering valve, and a closed position, wherein the metering valve is configured to precisely control a flow of the aerosol formulation outward of the discharge piece. A solenoid is electronically connected to the battery and is movable between an actuated position wherein the solenoid urges the flow control valve into the open position, and an un-actuated position wherein the flow control valve remains in the closed position.

Apparatus and methods of dispensing fluid intravenously to a subject, and of flushing a line of an intravenous fluid administration apparatus, are provided. The apparatus may include a reservoir pump configured to operate in fluid communication with an upstream source of a first fluid and a downstream pressure-operated valve. The apparatus may also include a port connector configured to operate in fluid communication with at least the pressure-operated valve. The reservoir pump may also be configured to, during operation, automatically refill itself with the first fluid from the first upstream source. The downstream pressure-operated valve may be configured to operate in fluid communication with the reservoir pump and a second fluid source upstream of the pressure-operated valve, and to, during operation, dispense the first fluid to tubing downstream of the pressure-operated valve based on a pressure condition within the pressure-operated valve exceeding a threshold pressure.

System and methods for automatically removing by suction urine voided by a patient, e.g., a female. The systems include an external catheter, a suction canister and a sound suppressed suction regulator. The suction regulator and canister may form an integral unit. The external catheter is applied at the urethra opening to receive urine voided by the patient. The suction canister collects the urine and is coupled to a source of suction providing suction having a first value. The suction regulator is interposed between the external catheter and the canister to regulate the amount of suction to a regulated value which is applied the external catheter to carry urine from the external catheter into the canister. The suction regulator includes passageways through it that do not form a tortuous path so that noise is not generated by the air flow through those passageways.

An externally programmable shunt valve assembly that includes a motor having a rotor that is operable in response to an externally applied magnetic field and configured to increase or decrease the working pressure of the shunt valve assembly. The motor may further include a position sensing mechanism that allows a position of the rotor, and associated pressure setting of the valve, to be determined using an external magnetic sensor. In certain examples the motor further includes a mechanical brake that is magnetically operable between a locked position and an unlocked position and which, in the locked position, prevents rotation of the rotor.

A catheter includes: a body comprising a body side wall, a proximal end and a distal end; a septum extending from the proximal end to the distal end; a first lumen and a second lumen separated by the septum, each lumen forming a mouth at the distal end; first and second slots formed in a portion of the body side wall at the distal end and in fluid communication with the first and second lumens respectively. The first and second slots extend linearly along a direction parallel to a longitudinal axis of the body. The distal end of the body and the septum terminate in a plane perpendicular to the longitudinal axis. The distal end of the body has a substantially round cross section, while the first and second lumens each have a substantially D-shaped cross-section at the distal end. The two slots each have a width that is between 30% and 60% of a longer dimension of the D-shaped cross-section of a corresponding lumen.

A valve may have a fluid inlet and a fluid outlet. The valve may include a valve stem having a lumen extending from a first opening at a proximal portion of the valve stem to a second opening at a distal end of the valve stem. A plurality of seals may be positioned relative to the valve stem. The valve stem and seals may be configured so that a fluid entering the inlet is prevented from flowing to the outlet in a first position of the valve stem and relative to the inlet and the outlet. The valve stem and the seals may be configured so that a fluid entering the inlet flows to the outlet in a second position of the valve stem relative to the inlet and the outlet, the second position being more distal than the first position relative to the inlet and the outlet.