A droplet delivery device and related methods for delivering precise and repeatable dosages to a subject for pulmonary use is disclosed. The droplet delivery device includes a housing, a reservoir, and ejector mechanism, and at least one differential pressure sensor. The droplet delivery device is automatically breath actuated by the user when the differential pressure sensor senses a predetermined pressure change within housing. The droplet delivery device is then actuated to generate a stream of droplets having an average ejected droplet diameter within the respirable size range, e.g, less than about 5 m, so as to target the pulmonary system of the user.

A droplet delivery device and related methods for delivering precise and repeatable dosages to a subject for pulmonary use is disclosed. The droplet delivery device includes a housing, a reservoir, and ejector mechanism, and at least one differential pressure sensor. The droplet delivery device is automatically breath actuated by the user when the differential pressure sensor senses a predetermined pressure change within housing. The droplet delivery device is then actuated to generate a stream of droplets having an average ejected droplet diameter within the respirable size range, e.g, less than about 5 m, so as to target the pulmonary system of the user.

A gas delivery system including a gas delivery device, a control module and a gas delivery mechanism is described. An exemplary gas delivery device includes a valve assembly with a valve and circuit including a memory, a processor and a transceiver in communication with the memory. The memory may include gas data such as gas identification, gas expiration and gas concentration. The transceiver on the circuit of the valve assembly may send wireless optical line-of-sight signals to communicate the gas data to a control module. Exemplary gas delivery mechanisms include a ventilator and a breathing circuit. Methods of administering gas are also described.

An inhalation training device and inhalation training system for practicing of an inhalation process of a patient. The inhalation training device has a that is housing attachable to and detachable from a mouthpiece of an inhaler designed to provide a drug to the patient and a microphone adapted to measure the airflow occurring in the mouthpiece of the inhaler during an inhalation process of the patient. The inhalation training system includes the inhalation training device, an inhaler and an electronic device configured for evaluation of a signal received from the inhalation training device and for visual and/or audio feedback to the patient.

A portable hemodialysis system is provided including a disposable cartridge and a reused dialysis machine. The disposable cartridge includes a dialyzer, and a dialysate flow path and a blood flow path which flow in opposing directions through the dialyzer. The disposable cartridge includes pressure and fluid flow sensors for measuring the pressure and fluid flow in the dialysate flow path and blood flow path. In addition, the disposable cartridge possesses pump actuators (but not pump motors) for pumping dialysate and blood through their respective flow paths. Preferably, the disposable cartridge includes a filter for removing waste products from dialysate.

A droplet delivery device and related methods for delivering precise and repeatable dosages to a subject for pulmonary use is disclosed. The droplet delivery device includes a housing, a reservoir, and ejector mechanism, and at least one differential pressure sensor. The droplet delivery device is automatically breath actuated by the user when the differential pressure sensor senses a predetermined pressure change within housing. The droplet delivery device is then actuated to generate a stream of droplets having an average ejected droplet diameter within the respirable size range, e.g, less than about 5 m, so as to target the pulmonary system of the user.

An electronic cigarette vaporizer includes a heating element, an air pressure sensor and a microcontroller; the microcontroller stores, processes or determines the extent of each inhalation using signals from the air pressure sensor. The microcontroller can calculate the approximate e-liquid consumption from the extent of each inhalation or provide data that enables an external processor to calculate approximate e-liquid consumption. The extent of an inhalation is a function of one or more of: duration; peak flow rate; average flow rate.

Provided is a cassette unit suitable for use with an auto-injector having an electrically powered drive unit. The cassette unit has a housing defining a cassette unit housing cavity and a needle projection aperture. The cassette unit housing cavity is arranged for receipt of a syringe. The syringe has a barrel for containing a volume of a liquid drug formulation, the barrel defining a flange at the rear end thereof and a forward shoulder at the forward end thereof; a hollow needle at a front end of the barrel, the hollow needle defining a needle tip; and a plunger that is axially movable within the barrel. The cassette unit includes, in contact with the plunger and axially movable within the barrel, a plunger slaving part arranged such that when a drive load is applied to a rear drive-receiving face thereof the drive load is evenly transmitted to the plunger.

A nebulizer and a housing part removably connected thereto, each having one or more coding elements. At least one of the coding elements is configured to be mounted in different defined positions on the nebulizer or the housing part and is removably connected thereto so that in each position a different coding is obtained in which the one or more coding elements match one another.

An electronic cigarette vaporizer system including a cartridge designed to provide a liquid or other substance for the electronic vaporizer system, the cartridge including a chip that stores data related to the batch number of the substance stored in the cartridge, and the cartridge being adapted to be inserted into or form an integral part of the electronic vaporizer system. The electronic vaporizer system reads the data from the chip and compares that data with stored data and, depending on the result of that comparison, either prevents or permits use of that substance.