Endotracheal tube sealing cuff system

Details Endotracheal tube sealing cuff system Endotracheal tube sealing cuff system

1987-12-04

1989-07-25

Burr, Edgar S.

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

12820714, 12820716, 604 96, 604 97, A61M 1600, A61M 2500

Patent

active

048503495

ABSTRACT:
An inflation control system for an endotracheal tube cuff is disclosed. The control includes a housing defining a passage connected at one end to a respirator and at the other end to an endotracheal tube. The housing also defines a diaphragm chamber divided into two portions by a flexible diaphragm. One chamber portion is connected to the passage and the other to an inflatable cuff on the endotracheal tube. During the inspiration cycle, in which the respriator supplies air to the patient's lungs, the diaphragm is displaced and inflates the endotracheal tube cuff into sealing engagement with the trachea. On expiration cycles, in which air is exhausted from the lungs, the diaphragm returns to its normal position, causing at least partial deflation of the inflatable cuff. This allows at least a portion of the air being exhausted from the lungs to pass around the endotracheal tube, allowing a tracheotomy patient to speak. The intermittent deflation of the cuff also reduces irritation of the tissue of the trachea.

REFERENCES:
patent: 4090518 (1978-05-01), Elam
patent: 4119101 (1978-10-01), Igich
patent: 4501273 (1985-02-01), McGinnis

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