Fluid delivery and measurement systems and methods are disclosed.

A gas vending system for health application, comprising: a healthy gas generator module, a control module, and a charging/payment module. The healthy gas generator module is used to generate a healthy gas. The control module is connected to the healthy gas generator module for monitoring the usage state of the healthy gas and generating a volume consumption signal for the healthy gas. The charging/payment module is connected to the control module for receiving the volume consumption signal for the healthy gas and then generating a toll after computing. The charging/payment module is adapted to accept cash or charging a debit card or credit card according to the toll.

A syringe has a syringe main body, a syringe unit, and a piston. An end surface of the piston disposed on a forward end side is brought in contact with an end surface of a plunger disposed on a proximal end side so that the plunger is slidable toward a discharge port in a state in which a rod portion is accommodated in an accommodating hole in an attached state. In the attached state, the syringe unit is attached to the syringe main body, and a position of the plunger in a charging chamber is determined at a predetermined position at which an amount of an injection objective substance in the charging chamber is a predetermined amount on the basis of a position of the piston arranged in a through-hole of the syringe main body. Accordingly, the syringe is easily handled and the injection objective substance can be correctly charged.

Fluid delivery and measurement systems and methods are disclosed.

A gas generator for health use is provided. The gas generator for health use includes an electrolysis device for electrolyzing water and producing a gas mixture that includes hydrogen and oxygen. The gas generator for health use further includes a gas mixing system coupled to the electrolysis device to receive the gas mixture. The gas mixing system is adapted to mix the gas mixture with water vapor, an atomized medicinal liquid, a volatile essential oil or a combination thereof to produce a health gas for being inhaled by a user.

The migraine treatment device of the preferred embodiments includes a threaded fitting designed to thread onto a beverage container; a valve coupled to the threaded fitting; a nozzle coupled to the valve, where the nozzle opening is smaller than the size of a human nostril; where at least some of the gas in the beverage container is one or more of: a) carbon dioxide, b) nitric oxide, c) nitrous oxide, d) an acidic gas, e) a gas that reacts with moisture to create acid, and f) an acidic vapor. The migraine treatment device is preferably designed to deliver gas into the nasal passageway of a user, where the gas is capable of reacting with moisture to create an acid so that the acid activates a sensation in the nerves of the nasal passageway, causing a reduction in a user's discomfort due to at least one of headaches and migraine headaches.

Fluid delivery and measurement systems and methods are disclosed.

Devices, systems and methods for needle free injection include a multi-use needle-free injection device comprising reversibly connected proximate and distal sections, wherein the proximate section comprises a power supply, actuator, circuitry and a housing, and the distal section comprises a disposable nozzle tip prefilled with an injectate, a chemical energetic device, and a dual seal piston barrier between the energetic device and the injectate, wherein the proximate and distal sections and their components are operably linked and configured for single-hand injecting of the injectate.