Marking system for tube placement

Surgery – Respiratory method or device – Respiratory gas supply means enters mouth or tracheotomy...

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Details

604100, 604264, 604280, 116324, 73427, 33169B, A61M 1600

Patent

active

046901388

ABSTRACT:
An endotracheal tube (10) is adapted to cooperate with a marking insert (36) for the purpose of providing means for the indication of a correct depth of placement of the endotracheal tube as it resides appropriately positioned within the intubated pathway. The marking insert is included to the receptive interior of a secondary passage (26) defined by the wall (14) of the tubular member (12) of the endotracheal tube and is slidably adjusted into a postion to space-relate a suitable portion of the marking insert with a stationary reference means such as the patient's lips (56A and 56b). The adjustment of the insert into a marking position is made at a time when the position of the forward end (20) of the endotracheal tube is known to be correctly distant from the tracheal bifurcation (54). The forward termination (40) of the insert may be used to adjacently space-relate with the stationary reference means and may be visible through the transparent wall of the endotracheal tube. Alternately, an insert tab (44), useful in adjusting the marking insert, could serve to adjacently or distantly space-relate with the stationary reference means, the tab being unconfined by the secondary passage and clearly visible to the clinician. The clinician (58) is alerted to a malposition of the endotracheal tube when the forward termination of the marking insert, or its tab member, is significantly dislocated from the intended spaced relation with the stationary reference means. A novel method of manufacturing and supplying the marking insert is disclosed in two alternative embodiments.

REFERENCES:
patent: 488736 (1892-12-01), King
patent: 1913229 (1933-06-01), Bordier
patent: 3115115 (1963-12-01), Lang et al.
patent: 3638655 (1972-02-01), Doherty
patent: 4121572 (1978-10-01), Krzeminski
patent: 4499905 (1985-02-01), Greenberg et al.

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