Importance

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Abstract

A method for providing assisted ventilation which avoids hypoxia and hypocapnia in which a predetermined dead space in an assisted ventilation system is provided external to the patient. The method may also be used to create normocapnia or moderate hypercapnia without causing hypoxia during assisted ventilation. Improved assisted ventilation devices, including an improved proximal terminal, improved tubular attachments and improved coaxial filters, are disclosed which are safer and less expensive to use than corresponding prior art unilimb assisted ventilation devices. Connector fittings and adapters to provide connector fittings on assisted ventilation devices are disclosed which provide positive indication of attachment of assisted ventilation devices and resist detachment of assisted ventilation devices. The devices of the present invention also reduce medical waste in comparison to prior art assisted ventilation devices. An interface is provided which incorporates the proximal terminal and other functional devices to which tubular respiratory conduits of predetermined and/or adjustable dead space volumes can be attached.

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First Claim