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ResMed Inc. is an American medical equipment company based in San Diego, California.It primarily provides cloud-connectable medical devices for the treatment of sleep apnea (such as CPAP devices and masks), chronic obstructive pulmonary disease (COPD), and other respiratory conditions.
some kind of headgear (mask or hood), a powered (motor-driven) fan which forces incoming air into the device, a filter (or multiple filters) for delivery to the user for breathing, and; a battery or other power source. The mask may be hard and tight-fitting, or flexible and loose-fitting.
SARs may be either constant-flow or pressure-demand respirators. Constant-flow respirators supply a steady stream of air, some of which escapes from the wearer end unbreathed. Pressure-demand respirators supply air only when the pressure in the wearer's mask drops (that is, when they inhale). This saves air but allows more inwards leakage.
An open circuit SCBA typically has three main components: a high-pressure gas storage cylinder, (e.g., 2,216 to 5,500 psi (15,280 to 37,920 kPa), about 150 to 374 atmospheres), a pressure regulator, and a respiratory interface, which may be a mouthpiece, half mask or full-face mask, assembled and mounted on a framed carrying harness.
The respiratory protective devices (RPD) can protect workers only if their protective properties are adequate to the conditions in the workplace.Therefore, specialists have developed criteria for the selection of proper, adequate respirators, including the Assigned Protection Factors (APF) - the decrease of the concentration of harmful substances in the inhaled air, which (is expected) to be ...
These masks are removed from packaging and plugged into the socket for oxygen supply. [citation needed] On the Boeing 777-300ER and Boeing 787, oxygen masks only consist of the mask and tube. Passengers breathe into the mask to start oxygen flow, and there are no side straps, as the mask adjusts automatically. [clarification needed] [citation ...
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