Breathing circuit

Details Breathing circuit Breathing circuit

1982-04-01

1984-07-31

Recla, Henry J.

Surgery

Liquid medicament atomizer or sprayer

128911, 12820018, A61M 1600

Patent

active

044623976

ABSTRACT:
A breathing circuit includes a double-wall coaxial main tube comprising a flexible inner tube forming an inhalation path and a corrugated outer tube disposed outside said inner tube and defining an exhalation path in conjunction with said inner tube; and a manifold including two sets of coaxially disposed inner and outer manifold tubes positioned along the length of the coaxial main tube and connected to corresponding tubes of the main tube. The manifold being provided with (a) a nebulizer which closes off confronting ends of connected sections of the outer tube in an axial direction and communicates with inner spaces of connected sections of the inner tube of the coaxial main tube, (b) a bypass interconnecting the exhalation path of the two outer tube sections which are closed and separated by the nebulizer, and (c) an exhalation valve provided in the bypass path and including a valve body capable of closing the bypass during inhalation. An inner tube retaining member is provided at the patient end of the coaxial main tube for fixing the inner tube and the outer tube and maintaining the inner and outer tubes at a fixed distance radially from each other.

REFERENCES:
patent: 3826255 (1974-07-01), Havstad
patent: 3874379 (1975-04-01), Enfield et al.
patent: 3945378 (1976-03-01), Paluch

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