Tonometric tracheal tube

Details Tonometric tracheal tube Tonometric tracheal tube

1991-12-04

1993-10-12

Millin, V.

Surgery

Respiratory method or device

Respiratory gas supply means enters mouth or tracheotomy...

12820714, 128635, A61M 1604, A61B 502

Patent

active

052516199

ABSTRACT:
A tracheal tube for artificial ventilation employs a primary sealant cuff and a tonometry cuff for monitoring the degree of local tracheal mucosal ischemia resulting from the pressure exerted by the primary cuff. The tonometry cuff employs a balloon sleeve of silicone elastomer membrane which is permeable to free gas but not liquid. The tonometry cuff is located on the primary sealant cuff so that during tonometry it is in full contact with the tracheal wall under the pressure of the primary cuff. The tonometry balloon sleeve is sealed against the primary cuff in a reverse folded configuration. The tube wall includes a number of lumens which may be employed for various auxiliary functions.

REFERENCES:
patent: 3173418 (1965-03-01), Baran
patent: 3854484 (1974-12-01), Jackson
patent: 4643192 (1987-02-01), Fiddian-Green
patent: 4791923 (1988-12-01), Shapiro
patent: 5033466 (1991-07-01), Weymuller, Jr.
Kivissan; J., Ninikoski; J., Use of Silastic Tube and Capillary Sampling Technic in the Measurement of Tissue PO.sub.2 and PCO.sub.2, Am J. Surg. 125: pp. 623-627, 1973.
Dobrin; P., Canfield; T.: Cuffed Endotracheal Tubes: Mucosal Pressures and Tracheal Wall Blood Flow, Am. J. Surg. 133: pp. 562-568, 1977.
Goldberg; M., Pearson; F. G.: Pathogenesis of Trachel Stenosis following Tracheostomy with a cuffed tube, Thorax 27: pp. 678-691.
Lee; M. H., Gastric Mucosal pH as a prognostic index of mortality in critically ill patients, (In press) Crt Care Med., 1992.

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