System and method for avoiding leakage in endotracheal tube with single or double cuff

An inflatable cuff for an endotracheal tube system, the inflatable cuff comprising:

• an internal channel adapted for insertion of a ventilation tube of the endotracheal tube system through the internal channel from a proximal opening of the inflatable cuff to a distal opening of the inflatable cuff, the internal channel having a longitudinal axis of the inflatable cuff defined therethrough;
• an inflatable portion between the proximal opening and the distal opening;
• and
• a proximal one-directional valve at the proximal opening of the inflatable cuff, the proximal one-directional valve being double-walled and inflatable,
• wherein the inflatable portion is configured such that, during an intubation procedure on a patient in which the inflatable cuff is attached to the ventilation tube:
• (a) the inflatable portion comprises:
• a sealing section having a primary maximum inflated diameter;
• and
• at least one non-sealing section joined to the sealing section at a joint, the at least one non-sealing section having a maximum inflated diameter less than the primary maximum inflated diameter of the sealing section, the joint defining a diameter less than the maximum inflated diameter of the at least one non-sealing section,
• (b) the sealing section of the inflatable portion, and each non-sealing section of the inflatable portion, are inflated,
• (c) when the inflatable portion is inflated, the sealing section and each non-sealing section of the inflatable portion comprise outer surfaces each having a rounded convex contour bulging outwardly away from the internal channel, and
• (d) the sealing section of the inflatable portion provides sealing against a tracheal wall of the patient;
• and
• wherein the proximal one-directional valve is configured to be inflated with the sealing and non-sealing sections.