Tracheostomy tube with disposable inner cannula

Details Tracheostomy tube with disposable inner cannula Tracheostomy tube with disposable inner cannula

1980-04-07

1982-02-16

Recla, Henry J.

Surgery

Respiratory method or device

Means placed in body opening to facilitate insertion of...

12820715, A61M 2502

Patent

active

043155057

ABSTRACT:
A tracheostomy tube includes an outer cannula and a removable, disposable inner cannula. The inner cannula is provided with a tapered portion located just behind its distal tip which forms simultaneously an air tight seal with the outer cannula and a stop device for preventing the protrusion of the tip substantially beyond the end of the outer cannula. The stop device furthermore compensates for variations in the length of the inner cannula by controlling the position of the tip between a location flush with the end of the outer cannula and one just slightly beyond. A coupling connector is mounted on the proximal end of the inner cannula to provide easy, releasable attachment of the inner cannula to the outer cannula. The inner cannulae are inexpensively constructed from a soft, flexible polyvinyl chloride material and are dimensionally compatible with any particular outer cannula.

REFERENCES:
patent: 2765792 (1956-10-01), Nichols
patent: 3606669 (1971-09-01), Kemble
patent: 4009720 (1977-03-01), Crandall
patent: 4033353 (1977-07-01), La Rosa

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