Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1985-12-02
1987-08-11
Recla, Henry J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820418, 12820525, 12820718, A62B 700
Patent
active
046854568
ABSTRACT:
An improved, self-retracting oxygen conduit is provided for supplying oxygen to an oxygen face mask or nasal cannula on the face of a human being. One end of the improved conduit is connected to an oxygen reservoir, such as a steel cannister filled with oxygen or oxygen enriched gas and having a pressure regulator at its outlet, while the other end is connected to a facial respirator. The improved conduit is formed of a length of flexible, resilient hollow tubing, preferably formed of medical grade polyurethane. The central section of the tubing is permanently formed into a multiplicity of helical coils or loops. The coils normally reside contracted into serial contact with each other, although with the application of longitudinal tension on the tubing, the coils may be resiliently drawn apart into spatial separation from each other, thereby resiliently increasing the longitudinal distance between the opposite ends of the tubing. The tubing is not coiled at its ends. The coiled central section of the tubing thereby serves as a resilient, retraction mechanism. The overall longitudinal length of the tubing is long enough to permit the user to move his or her face relative to the oxygen reservoir. The resiliently coiled central section of the tubing prevents the tubing from developing slack lengths which may catch on doors or get caught in gurney or wheelchair wheels.
REFERENCES:
patent: 2999497 (1961-09-01), Hamilton et al.
patent: 3021871 (1962-02-01), Rodgers
patent: 4160466 (1979-07-01), Jansson
patent: 4373522 (1983-02-01), Zien
Recla Henry J.
Thomas Charles H.
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