Positive-Air-Pressure Machine Conduit
a positive air pressure and machine technology, applied in mechanical equipment, respirators, chemical protection, etc., can solve the problems of limiting the ability of patients to move or roll, adding to the potential discomfort of patients, etc., and achieve the effect of enhancing patient comfor
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[0071] Referring to FIGS. 1 and 2, there is shown a headgear 10 according to an embodiment of the invention. The headgear 10 includes a pair of conduits or side portions 12 which are joined integrally to each other by a central portion 14. A head attachment means in the form of a strap 16 is also joined integrally to the side portions 12 as shown in FIG. 1, so that the side portions 12, central portion 14, and strap 16 are all of an integral, unitary construction.
[0072] The side portions 12, central portion 14 and strap 16 are formed by joining together, e.g., by high-frequency (HF) plastics welding, a pair of polymeric (e.g., plastic) sheets 17. The manner in which the sheets 17 are joined together is such that the middle portions of the sheets 17 can be parted from each other to define passages running along the length of the side portions 12, as described in more detail below. It will be appreciated that, when the sheets 17 are configured to form such passages in the side portio...
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