A system for cooling the brain of a human subject, includes a cooling subsystem which inputs a flow of air or breathable gas, cool the air or breathable gas, and output cooled air or breathable gas which is delivered to a human subject. A flow control device controls a flow rate of the flow of the air or breathable gas input to the cooling subsystem and a flow rate of the cooled air or breathable gas delivered to the human subject. One or more flow rate sensors measure at least a flow rate of flow of cooled air or breathable gas. One or more temperature sensors measure at least a temperature of a brain and the temperature of the flow of cooled air or breathable gas. A controller adjusts a cooling rate, the temperature, and the flow rate of flow of cooled air or breathable gas delivered to the human subject to cool the brain of the human subject.

An energized assembly to enhance efficacy of a treatment agent in a local environment. The assembly includes an emanator or holder element to hold treatment agent, and a flameless energizing source to energize the treatment agent and thereby, place the treatment agent into an enhanced operational state. Preferred embodiments operate for a period of time of between about 4 and 8 hours, and can then be discarded. Typically, a housing associates the treatment agent and the energizing source. Embodiments may sometimes include one or more of: a gas-tight boundary element, a thermal transfer element, a trigger mechanism, a safety mechanism, a termination mechanism, a time-delay mechanism, solidized treatment agent to avoid spills, and a sequestering arrangement to avoid premature combination of reactants.

A waste collection unit is provided that comprises a vacuum pump and smoke evacuation system including a blower and blower motor. The vacuum pump, the blower, and the blower motor, create noise. This noise is attenuated in first and second sound attenuating enclosures for the vacuum pump and the blower and blower motor. A cleaning system is also provided with rotating liquid delivery devices. An actuator is operatively coupled to the liquid delivery devices to rotate the liquid delivery devices.

A system and method for managing a respiratory condition of a user is disclosed. The system includes an oxygen concentrator having a compression system configured to generate oxygen enriched air for delivery to the user. A physiological sensor is configured to collect physiological data of the user. The physiological data is of one or more data types. An operational sensor is configured to collect operational data of the oxygen concentrator during operation of the oxygen concentrator. The operational data is of one or more data types. A processor is configured to receive the collected physiological data and the operational data and compute a summary parameter for values of each data type. The processor is also configured to compute a health score from the summary parameter values.

A blower unit for use as part of an integrated blower/humidification system is described. The blower unit has an outer casing, which encloses and forms part of the blower unit, the casing including an air inlet vent. The blower unit further includes a humidifier compartment for receiving a humidifier unit with a separate gases inlet and outlet, the compartment having a heater base for heating the contents of the humidifier unit. The compartment also has a blower inlet port which aligns with the humidifier unit inlet in use, the blower providing a gases path through the casing between the inlet vent and the inlet port. The blower unit also includes a fan for providing a pressurised gases stream along the gases path, and a power supply unit for powering the fan. The gases path is routed over the power supply unit in order to provide a cooling air flow.

A chilled-air inhaler device for the alleviation of respiratory symptoms includes a body containing a hollow chamber through which air is forced or drawn past at least an air-chilling surface. In an embodiment the air-chilling surface may include water ice. Connected to the body and hollow chamber at one end is a mouthpiece including an opening that connects from environmental air outside of the hollow chamber to the hollow chamber. Connected to the hollow chamber at a second end is an inlet which connects to a source of air. In an embodiment, the inlet may connect to an external device such blower or nebulizer.

A vaporizer device includes an inhalation nozzle, a container containing the vaporizable material; and an atomizer arranged for carrying out a single continual atomization process for producing an inhalable vapor. A dosage reminder system for the vaporizer device includes a control module, a reminder determination unit configured for detecting a parameter during the single continual atomization process of the atomizer and a reminder element arranged for providing a reminder effect under control of the control module when the parameter reaches to a predetermined threshold.

A device for delivering gas into a surgical cavity comprising a patient interface having an inlet, fluidly connected with a gas source, and an outlet, the patient interface being configured to deliver a conditioned flow of gas into the surgical cavity. The conditioned flow of gas may have the properties of having a reduced outlet velocity relative to the velocity of the inlet gas, or having a diffuse flow, or being heated, or being substantially laminar or non-turbulent, or a combination thereof. The invention may also comprise an attachment mechanism to attach to or anchor the patient interface.

A compressor assembly for a portable oxygen concentrator includes a first compressor chamber having a first connector, a second compressor chamber having a second connector, and a tube having a first end having a first connection interface configured to connect to the first connector and a second end having a second connection interface configured to connect to the second connector. The first connection interface is shaped to maintain the connection between the first connector and the first connection interface in a fixed orientation and the second connection interface is shaped to maintain the connection between the second connector and the second connection interface in a fixed orientation. One or more of the first connector, the second connector, and the tube are compliant.

Apparatus and methods are described for use with a portion of plant material that includes at least one active ingredient. A vaporizing unit includes a heating element configured to heat the plant material, and a sensor configured to detect an indication of airflow rate through the vaporizing unit. Control circuitry is configured to receive an indication of the airflow rate through the vaporizing unit, and, in response thereto, to determine a smoking profile that is desired by the user. The control circuitry drives the heating element to vaporize the active ingredient of the plant material by heating the plant material according to the determined smoking profile. The control circuitry dynamically updates the smoking profile in response to changes in airflow rate over the course of a smoking session. Other applications are also described.