The invention relates to a flow indicator preferably to be used in oxygen therapy treatment of patients where a clear flow or no flow state must be signaled for the supply of oxygen.

According to the inventive flow indicator are two cylindrical bodies used, one (30) movable and one (10) stationary, and with one extended flow restriction passage (80) that forces the movable cylindrical body away from a sight glass (40), instead exposing the stationary cylindrical body. The viewable cylindrical part of the movable part may be colored red (R), and the viewable cylindrical part of the stationary body may be colored green (G).

A flow indicator with quick and stable indication of developed flow is obtained.

A headgear system and/or an interface assembly incorporating a headgear system that, in some configurations, is configured to transform from elasticated or “stretchy” behavior to “inelastic” behavior at least in response to normal or expected forces encountered during the intended therapy. In some configurations, upon fitment to the head of a user, the system automatically adjusts toward or to an appropriate size. A headgear portion or assembly for use in combination with a breathing apparatus in some configurations is at least substantially inelastic and is three dimensional in shape. The headgear portion or assembly can comprise a plastic core and a textile casing. The headgear, or part thereof, may also have integrally moulded labels, connectors, adjustment mechanisms and/or grips.

A respiration valve (100) and breathing machine having same; the respiration valve (100) comprises a valve body (1), an air resistor (2), a stainless steel valve port (3), a diaphragm (4) and valve bonnet (5); the valve body (1) is formed with an air intake channel (101) and an air output channel (102) connected to the air intake channel (101), and the air intake channel (101) has an air inlet (103) and an air outlet (104); the air resistor (2) is disposed in the air intake channel (101); the stainless steel valve port (3) is provided at the air outlet (104) of the air intake channel of the valve body (1), and one end of the stainless steel valve port (3) extends out of the air outlet (104) of the air intake channel of the valve body (1); the diaphragm (4) is movably disposed on the valve body (1) between the open and close positions of the stainless steel valve port (3); the valve bonnet (5) is disposed on the valve body (1), and cooperates with the valve body (1) to press against the edge of the diaphragm (4); and the valve bonnet (5) is provided with a through hole (501) thereon. The respiration valve (100) improves the sealing property of the diaphragm (4) and the stainless steel valve port (3), ensures accurate and reliable opening and closing of the valve port (3), and can precisely calculate the moisture volume inhaled and exhaled by the respiration valve (100).

Embodiments disclosed herein are directed to ventilation devices, systems, and methods for applying positive end expiratory pressure (PEEP) to the lungs of a patient. For example, applying above atmospheric pressure to the lungs of the patient may mitigate alveolar collapse in the lungs and/or may have other health benefits for the patient.

Embodiments disclosed herein are directed to devices, systems, and methods for mixing and/or blending two or more fluids, such as gases, to produce suitable mixed or blended fluids, such as a breathable gas. For example, the system may control and/or regulate flow from of first fluid from a first source and/or flow of a second fluid from a second source. The system may include a controller that may operate or direct operation of one or more valves to control the flow of the first and second fluids, thereby producing a blended or mixed fluid that has selected concentrations or proportions (or ratios) of the first and second fluids.

An oscillating positive expiratory pressure apparatus having a housing defining a chamber, a chamber inlet, a chamber outlet, a deformable restrictor member positioned in an exhalation flow path between the chamber inlet and the chamber outlet, and an oscillation member disposed within the chamber. The deformable restrictor member and the oscillation member are moveable between an engaged position, where the oscillation member is in contact with the deformable restrictor member and an disengaged position, where the oscillation member is not in contact with the deformable restrictor member. The deformable restrictor member and the oscillation member move from the engaged position to the disengaged position in response to a first exhalation pressure at the chamber inlet, and move from the disengaged position to an engaged position in response to a second exhalation pressure at the chamber inlet.

Methods and system for treating obstructive sleep apnea and snoring are disclosed. The system generally comprises a mask for delivering pressurized air to patient's breathing orifice, a sensing mechanism for continuously assessing the state of patient's breathing and a pressure generator for generating the pressurized air in the mask. The pressurized air is applied to the breathing orifice only during selected portions of the breathing cycle, when such pressure might be required to prevent occlusion of the airway or to restore patency of the airway after such occlusion occurs.

A pressure indicator for a respiratory treatment device, the pressure indicator including an instrument for measuring pressures, a conduit configured to transmit a pressure within the respiratory treatment device to the instrument, and a pressure stabilizer orifice positioned within the conduit.

A blowout includes: a stretchable body having a tube shape and changeable in shape; a wire body having elasticity and arranged along the longitudinal directions of the stretchable body; a pipe body having a cylinder shape, one end part of the pipe body being connected to one end part of the stretchable body; and a mouthpiece body having a cylinder shape and connected to the other end part of the pipe body, the mouthpiece body being held by a user in the mouth such that air is blown by the user, in which the stretchable body is stretched by blowing air from the mouthpiece body while the stretchable body is curled into a spiral by the elastic force of the wire body when air is not blown from the mouthpiece body. In the blowout, the one end part of the stretchable body and the one end part of the pipe body are connected by a tightening band so that the stretchable body can be attached to and detached from the pipe body.

A positive pressure airway device for providing resistance in an air pathway for a patient exhaling. The device includes a central tube region, a inspiratory air passageway for passing air into the central tube region when a patient breathing through the device inhales, and an expiratory air passageway for passing air out of the central tube region when a patient breathing through the device exhales, A valve in the expiratory air passageway allows air to flow out only when a patient using the device exhales with an expiratory air pressure greater than a selected pressure, and includes a stopper and a coil spring with an interior portion that is free from any structure that would inhibit the “side-to-side” movement of the spring within the housing. The stopper has a cone-shaped air-stopping surface providing a valve angle that is different from the valve-seat angle so that either laminar or oscillating flow may be obtained.