Methods and apparatus may implement controlled generation of oxygen enriched air in an oxygen concentrator while implementing control that reduces pneumatic imbalance between the concentrator's canisters, such as dynamic pressure imbalance or other pneumatic characteristic. One or more controllers may regulate operation of a compressor that feeds a pressurised air stream to the concentrator's canisters. This may regulate speed of the compressor to a speed set point for generating the pressurised stream. The regulating may involve generating a compressor control signal having a characteristic parameter such as a power parameter. The controller(s) may operate valve(s) in a cyclic pattern so as to produce oxygen enriched air in an accumulator. A cycle of the cyclic pattern may include a plurality of phases, where each of the plurality of phases has a duration. The controller(s) may then generate a dynamic adjustment to the duration(s) based on an evaluation of the characteristic parameter.

The present disclosure describes a manual or automated face plunge comprising a water reservoir, and optionally a chilling apparatus comprising one or more thermoelectric coolers to chill the water, and a controller to electronically control the chilling apparatus. The disclosure further describes methods for chilling the face, triggering the central nervous system, promoting human health, promoting human beauty, and promoting aesthetic benefits to a human in need thereof, comprising immersing the face of the person in the face plunge in accordance to various immersion regimens. In various aspects, the face plunge comprises ice-cold water for the facial immersions.

Apparatuses and methods for treating neurological and/or neuropsychiatric disorders are by application of thermal energy to the patient's forehead region, for example, by maintaining a target temperature or temperature range to the forehead of a patient for a time period. In particular, described herein are regional brain cooling mechanisms to treat neuropsychiatric disorders such as depression, anxiety, and autism.

A battery retaining system for a portable oxygen concentrator includes a first rail configured to receive a first slide of a battery, a second rail configured to receive a second slide of the battery, the second rail being spaced apart from the first rail so as to form a channel configured to receive the battery, and a flexible stiffening mechanism configured to impart a biasing force on a surface of the battery when the battery is received within the channel. The flexible stiffening mechanism includes a protrusion projecting from the first rail at least partially towards the second rail and a slit positioned behind the protrusion and configured to facilitate travel of the protrusion fore and aft.

Provided is a medical handpiece having liquid spray and suction functions and capable of being replaced with a drill. The medical handpiece includes a handpiece body having an accommodation space therein, a spray unit receiving liquid from an outside to spray the liquid onto a target to be treated, a pump unit transmitting air pressure to the spray unit to increase a spray speed of liquid sprayed by the spray unit, a drive unit converting a rotary motion into a reciprocating motion to transmit power to the pump unit, and a suction unit sucking liquid and foreign matter from the target to be treated.

An ultrasonic nebulizer includes a tank unit configured to be detachable with respect to a main body. The tank unit includes a working tank in which an ultrasonic vibrator is incorporated, a medicine tank, and a medicine tank cover, which are arranged overlaid in the stated order. The output of an oscillation circuit in the main body is applied to the ultrasonic vibrator through a main body-side contact electrode and a tank-side contact electrode when the tank unit is mounted on the main body. The main body includes an air fan that blows air into the medicine tank through an air duct of the medicine tank cover, and a medicine tank cover detection unit that detects whether or not the air duct of the medicine tank cover is adjacent to the main body so as to detect whether or not the tank unit is mounted on the main body.

Devices for delivering a controlled concentration of an agent are provided. The device includes a reservoir for the agent and a flow control portion operably connected to the reservoir. The device also includes a valve for releasing the agent from the flow control portion and a pump for flowing air to mix with the agent released by the valve and for flowing the agent and air mixture out of the device. Methods of delivering a vaporized agent to a subject are also provided. The methods include storing a liquid agent in a reservoir of a device and flowing the agent into a flow control chamber to change the agent to a gas. The methods also include mixing the agent in gas form with air and flowing the agent and air mixture out of the device to be delivered to a subject.

A method of implanting a penis erection stimulation system into a patient's body comprises cutting the skin of the patient body, dissecting free an area near the left and right corpus cavernosum, placing a drug delivery device within the dissected area and placing at least one infusion needle of the drug delivery device in a first position in the patient's body in between the left and right corpus cavernosum.

Disclosed herein is a method of alleviating symptoms of ocular surface discomfort, the method comprising: topically applying a cold slurry adjacent to a corneal limbus of an eye of a patient, wherein the cold slurry comprises water and a freezing point depressant, wherein the topical application of the cold slurry is configured to cause a degree of numbing of a cornea of the eye for a period of time, and wherein an ocular sensation of the eye is restored following the period of time.

A nasal delivery device for delivering substance to a nasal cavity of a subject, the delivery device comprising: a substance supply unit for supplying a dose of substance to be delivered to the nasal cavity of the subject, the substance supply unit including an inlet and an outlet; a nosepiece unit including a nosepiece for fitting to a nasal cavity of the subject and being in fluid communication with the outlet of the substance supply unit; and a mouthpiece unit including a mouthpiece in fluid communication with the inlet of the substance supply unit and through which the subject in use exhales such as to entrain substance from the container chamber and deliver the same through the nosepiece, and at least one temperature modifier for reducing a temperature of the exhaled air flow such as to reduce the absolute humidity thereof.