Laryngo-tracheal analgesia endotracheal tube

• US 4,977,894 A
• Filed: 04/07/1989
• Issued: 12/18/1990
• Est. Priority Date: 03/30/1987
• Status: Expired due to Term

• Current Assignee: KHPC Holding, Technology Holding Company II (Teleflex Incorporated), TKC Holdings Corporation
• Original Assignee: Sheridan Catheter Corp.
• Inventors: Davies, Gerald G.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): Gutowski, Anthony
• Application Number:
  US07/334,435
• Time in Patent Office: 620 Days
• Field of Search: 128/343, 128/207.14-207.17, 604/96, 604/100, 604/101
• US Class Current: 128/207.15
• CPC Class Codes: A61M 16/04 Tracheal tubes catheters in general A61M25/00
• CPC Class Codes: A61M 16/0447 Bell, canopy or umbrella shaped
• CPC Class Codes: A61M 16/0479 above the cuff, e.g. giving access to the upper trachea
• CPC Class Codes: A61M 16/0484 at the distal end
• CPC Class Codes: A61M 16/0486 Multi-lumen tracheal tubes
• CPC Class Codes: A61M 19/00 Local anaesthesia syringes therefor A61M5/00; Hypothermia A61M5/42 takes precedence; cooling blood in a bypass of the arterial system A61M1/36

Abstract

The laryngo-tracheal analgesia endotracheal tube is a modification of existing endotracheal tubes. It has the addition of an injection port to a lumen in the wall of the tube with exiting holes that correspond to the anatomical position of the epiglottis, larynx and trachea when the tube is correctly placed. The device allows for topical anesthesia to be applied to these pain sensitive areas on ititial placement and while the tube remains in place. The endotracheal tube of the present invention allows a patient to tolerate the presence of an endotracheal tube without discomfort and potentially dangerous reflexes of coughing, gagging, hypertension and tachycardia.

Claims

1. An endotracheal tube capable of administering a local anesthetic comprising:

(a) a tubular member for ventilating a patient, said tubular member having an arcuate shape, an interior, a proximal end and a distal end;

(b) a first conduit associated with the tubular member for carrying a local anesthetic, said first conduit sealed from fluid communication with the interior of said tubular member;

(c) first aperture means extending along a portion of the length of the tubular member and in fluid communication with the first conduit for permitting local anesthetic to be sprayed radially inwardly of the arcuate shape along the larynx, trachea and epiglottis of a patient when the endotracheal tube is in its operable position, said first aperture means comprising a plurality of apertures extending longitudinally along a portion of the length of the tubular member said first aperture means being sealed from fluid communication with the interior of said tubular member;

(d) inflatable means connected to the tubular member and located in the vicinity of the distal end for providing an air-tight seal of the trachea, said inflatable means comprising an inflatable cuff and said first aperture means being positioned between the inflatable cuff and the proximal end of the tubular member;

(e) second aperture means in fluid communication with the first conduit, said second aperture means being located between the distal end of the tubular member and the inflatable means for permitting local anesthetic to be sprayed inwardly of the arcuate shape along the trachea of the patient, said second aperture means being sealed from fluid communication with the interior of said tubular member; and

(f) a second conduit associated with the tubular member and in fluid communication with the interior of the inflatable means.

2. An endotracheal tube capable of administering a local anesthetic comprising:

(a) a tubular member for ventilating a patient, said tubular member having an arcuate shape, an interior, a proximal end and a distal end;

(b) a first conduit associated with the tubular member for carrying a local anesthetic, said first conduit sealed from fluid communication with the interior of said tubular member;

(c) first aperture means extending along a portion of the length of the tubular member and in fluid communication with the first conduit for permitting local anesthetic to be sprayed radially inwardly of the arcuate shape along the larynx, trachea and epiglottis of a patient when the endotracheal tube is in its operable position, said first aperture means comprising a plurality of apertures extending longitudinally along a portion of the length of the tubular member said first aperture means being sealed from fluid communication with the interior of said tubular member;

(d) inflatable means connected to the tubular member and located in the vicinity of the distal end for providing an air-tight seal of the trachea, said inflatable means comprising an inflatable cuff and said first aperture means being positioned between the inflatable cuff and the proximal end of the tubular member;

(e) second aperture means in fluid communication with the first conduit, said second aperture means being located between the distal end of the tubular member and the inflatable means for permitting local anesthetic to be sprayed inwardly of the arcuate shape along the trachea of the patient, said second aperture means being sealed from fluid communication with the interior of said tubular member wherein the first aperture means and the second aperture means are located within 11 centimeters of the distal end of the tubular member so that when the endotracheal tube is in position in a patient, local anesthetic passing through the first aperture means and the second aperture means initially flows in an anterior direction and contacts the epiglottis, larynx and trachea of the patient; and

(f) a second conduit associated with the tubular member and in fluid communication with the interior of the inflatable means.