Endotracheal tube

An endotracheal tube comprising:

• a tubular body having a form of a flexible curved transparent tube with open proximal and distal ends,
• a connector mounted on the proximal end of the tube and served for attaching a tube cavity to a ventilation device,
• an inflatable cuff having a cavity, said inflatable cuff fixed hermetically around the distal end of the curved tube and configured to be inflated to seal the cuff against a wall of a patient's trachea and to hold the distal end of the endotracheal tube in the desired position in a patient's larynx,
• a longitudinal air supply channel in the wall of the tubular body, said channel being in communication with the cavity of the inflatable cuff,
• a sealed balloon having elastic walls and configured to maintain and monitor pressure in the cuff cavity, the sealed balloon connected to an air supply port, and connected via a catheter to the longitudinal air supply channel to supply an air into the cuff cavity,
• a longitudinal drag supply channel, the channel made in the wall of the tubular body and connected by means of a catheter to a metered-dose drug supply container, wherein the central angle between the longitudinal air supply channel and the longitudinal drag supply channel is in the range of 90-180 degrees,
• at least two marks made on the surface of the tube, the first mark is located in the immediate vicinity of the cuff, the second mark is located at a distance of about 2-2.5 cm from the first mark, closer to the proximal end of the tube, so that said second mark is seen from the laryngopharynx when the endotracheal tube is in the required working position of the endotracheal tube in the patient's larynx at the border of the upper part of the larynx,
• two channels in the tubular body in a plane perpendicular to the axis of the tube, the channels opened to the outside of the tube in the immediate vicinity of the second mark from the side of the proximal end of the tube, said two channels communicating with the longitudinal drag supply channel and having each a cone-shaped expanding outlet,
• two channels in the tubular body in a plane perpendicular to the axis of the tube, the channels opened to the outside of the tube in the immediate vicinity of the cuff between said first mark and the cuff, said two channels communicating with the longitudinal drag supply channel and having each a cone-shaped expanding outlet, and
• two channels in the tubular body in a plane perpendicular to the axis of the tube, the channels opened to the outside of the tube in the immediate vicinity of the distal end of the tube between the cuff and the distal end of the tube, said two channels communicating with the longitudinal drag supply channel and having each a cone-shaped expanding outlet,
• characterized in that the inflatable cuff comprises two layers, wherein the outer layer of the inflatable cuff is made of a porous biocompatible polymer material and serves as a depot for input and hold the drug in the pores of the polymer material and remove the drug from the pores of the zone of contacting of the cuff with the trachea when the cuff is inflated providing infusion of the drug into the tracheal mucosa.

An endotracheal tube comprising:

• a tubular body having a form of a flexible curved transparent tube with open proximal and distal ends,
• a connector mounted on the proximal end of the tube and served for attaching a tube cavity to a ventilation device,
• an inflatable cuff having a cavity, said inflatable cuff fixed hermetically around the distal end of the curved tube and configured to be inflated to seal the cuff against a wall of a patient's trachea and to hold the distal end of the endotracheal tube in the desired position in a patient's larynx,
• a longitudinal air supply channel in the wall of the tubular body, said channel being in communication with the cavity of the inflatable cuff,
• a sealed balloon having elastic walls and configured to maintain and monitor pressure in the cuff cavity, the sealed balloon connected to an air supply port, and connected via a catheter to the longitudinal air supply channel to supply an air into the cuff cavity,
• a longitudinal drag supply channel, the channel made in the wall of the tubular body and connected by means of a catheter to a metered-dose drug supply container, wherein the central angle between the longitudinal air supply channel and the longitudinal drag supply channel is in the range of 90-180 degrees,
• at least two marks made on the surface of the tube, the first mark is located in the immediate vicinity of the cuff, the second mark is located at a distance of about 2-2.5 cm from the first mark, closer to the proximal end of the tube, so that said second mark is seen from the laryngopharynx when the endotracheal tube is in the required working position of the endotracheal tube in the patient's larynx at the border of the upper part of the larynx,
• two channels in the tubular body in a plane perpendicular to the axis of the tube, the channels opened to the outside of the tube in the immediate vicinity of the second mark from the side of the proximal end of the tube, said two channels communicating with the longitudinal drag supply channel and having each a cone-shaped expanding outlet,
• an annular drag supply channel for supplying the drag to the area of contact of the cuff with the tracheal mucosa and to underlying parts of the respiratory tract, the annular drag supply channel made in the tube wall in the immediate vicinity of the inflatable cuff from the proximal end of the tube, between the cuff and the first mark, the annular drag supply channel communicating with the longitudinal drag supply channel and comprising:
• at least three pairs of holes including the first pair, the second pair and the third pair, the holes having axes of different directions, the holes are located along the circumference at a distance from each other, wherein the first two pairs of holes having a cone-shaped expanding shape with a large cross-sectional diameter closer to the outer surface of the wall of the tube, the axis of each hole of the first pair is located at an angle of 45 degrees to the axis of the tube and is directed towards the distal end of the tube, the axis of each hole of the second pair is placed at an angle of 90 degrees to the axis of the tube, the third pair of holes has a cylindrical shape and the axes of the holes of the third pair are located at an angle of 25-30 degrees to the longitudinal axis of the tube and are directed towards the distal end of the tube,
• characterized in that the inflatable cuff comprises two layers, wherein the outer layer of the inflatable cuff is made of a porous biocompatible polymer material and serves as a depot for input and hold the drug in the pores of the polymer material and remove the drug from the pores of the zone of contacting of the cuff with the trachea when the cuff is inflated providing infusion of the drug into the tracheal mucosa.