Intratracheal tube

Details Intratracheal tube Intratracheal tube

1981-07-23

1983-10-04

Howell, Kyle L.

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

604 99, 604100, A61M 1508, A61M 2500

Patent

active

044072813

ABSTRACT:
An intratracheal tube for giving respiration to a patient, specially during narcosis with a mixture of oxygen and narcotic gas, wherein the intratracheal tube has a respirator hose adapted to be pushed in the windpipe of the patient, the forward end of said hose being surrounded by a blocking sleeve inflatable from the outside with a filling gas and in inflated state abutting closely on the windpipe wall, wherein the inner space of said blocking sleeve is connected in gas-conveying manner, via a connecting hose, to a diffusion vessel situated outside the patient, the surface size, wall thickness and material of said diffusion vessel being chosen so as to make it impervious to the filling gas while permitting the outward diffusion of narcotic gas, specially nitrous oxide gas, in an amount corresponding approximately to the amount diffused into said blocking sleeve.

REFERENCES:
patent: 3848605 (1974-11-01), Harautuneian et al.
patent: 4324235 (1982-04-01), Beran
Physical Characteristics of and Rates of Nitrous Oxide Diffusion into Tracheal Tube Cuffs, Anesthesiology, vol. 48, No. 6, Jun. 1978.

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