The present invention provides an oral device that is inserted into the mouth of a patient during sedation to minimize the risk of airway obstruction and method of use. The oral device comprises a mouthpiece. A gas inlet conduit, a gas outlet conduit, and a fluid outlet conduit are adjacent to the vestibular portion of the mouthpiece. The gas inlet conduit may be used to provide oxygen to the mouth of a patient. The gas outlet conduit may be used to remove end-tidal carbon dioxide from the mouth of a patient. The fluid outlet conduit may be used to remove fluid from the mouth of a patient. The oral device may also include a tongue stabilizer to minimize movement of the tongue. The mouthpiece may include fluid outlet ports to remove fluid from the mouth of a patient and an instrument passage to allow medical instruments to pass through the oral device.

A pharyngeal tube for establishing an airway within a patient may comprise an elongated hollow tube including a proximal end and a distal end. A mouthpiece may be provided at the proximal end of the tube, and one or more lateral openings may be provided at or near the distal end of the hollow tube. The one or more lateral openings may be formed in a lateral wall of the hollow tube, and a distal tip of the hollow tube is sealed so that air cannot escape the tube from its distal tip. The mouthpiece may form an airtight seal at the patients mouth. The mouthpiece may include an inner flange configured to be positioned between the patients teeth and lips, and an outer flange configured to be positioned on the outside of the patients lips. Some variations of the hollow tube may further include an inner septum that divides the tube into first and second lumens that are connected at the distal end of the tube. Some variations of the hollow tube may provide an inner channel that that extends along the inner surface of the tube. The inner channel may be suitable for receiving a suction catheter, a catheter that can be used as a carbon dioxide or other gas sampling line, or a gastric tube. The suction catheter may be associated with a reservoir in which fluid removed from the hollow tube can be deposited. Some variation may provide a gastric tube that is attached and runs parallel to the pharyngeal tube.

A ventilation catheter and airway management system is described to create conditions that tend to clear secretions during the normal conduct of ventilation by having an exclusive outflow channel and/or to use a programed cuff leak combined with PEEP to protect the airway. The secretion clearing endotracheal tube may include separate inflow and outflow paths as part of a double lumen, to facilitate breathing when placed in a patient. The double lumen portion intersecting to form a single lumen for protrusion into the intratracheal region allowing the new inspiratory fluid from the airway management system to flow into a patient and the used inspiratory fluid from the patient to flow back to the airway management system. A pharyngeal suction component removes fluid from the intratracheal region via periodic suctioning.

A valve assembly attached to a capacitor such that pressurizing the capacitor to a first positive pressure threshold induces the valve assembly to open, the pressurized air is released to the patient, and then as the pressure in the capacitor drops to a second pressure threshold the valve closes and the capacitor begins to build pressure until the first positive pressure threshold is achieved and the process repeats. Relative to the valve assembly and integrated therein, is an incrementally adjustable index knob to vary the rate of a biasing force performing work against the actionable valve face of the diaphragm functional surface to set the performance of the valve assembly, thereby increasing the potential for correct operation across a range of oscillating rates supporting a broad spectrum of patient therapies and types.

The present invention provides an oral device that is inserted into the mouth of a patient during sedation to minimize the risk of airway obstruction and method of use. The oral device comprises a mouthpiece. A gas inlet conduit, a gas outlet conduit, and a fluid outlet conduit are adjacent to the vestibular portion of the mouthpiece. The gas inlet conduit may be used to provide oxygen to the mouth of a patient. The gas outlet conduit may be used to remove end-tidal carbon dioxide from the mouth of a patient. The fluid outlet conduit may be used to remove fluid from the mouth of a patient. The oral device may also include a tongue stabilizer to minimize movement of the tongue. The mouthpiece may include fluid outlet ports to remove fluid from the mouth of a patient and an instrument passage to allow medical instruments to pass through the oral device.

Ventilator system with multiple inspiratory lumens is provided. The inspiratory lumens are configured so that separate inspiratory lumens provide inspiratory gas mixtures to separate portions of a patient's airways, for instance to separate lungs and/or bronchi. The ventilator system can include one or more expiratory lumens to evacuate expiratory gases from airways. The use of separate inspiratory lumen(s), with expiratory lumen(s), allows for functional separation of structural portions of the lungs, and maintenance of continuous or almost continuous flow through at least part of respiratory cycle via inspiratory and expiratory lumens. This can further reduce dead space and clear suspended therein diseases causative agents with improvement in outcomes, reduce risk of cross-contamination or cross-infection between different parts of airways, for example such as cross-infection from one lung lobe to another lobe or. The ventilator system allows for independent titration of PEEP, pCO.sub.2 and pO.sub.2 with no need for permissive hypercapnia.

Ventilator system with multiple inspiratory lumens is provided. The inspiratory lumens are configured so that separate inspiratory lumens provide inspiratory gas mixtures to separate portions of a patient's airways, for instance to separate lungs and/or bronchi. The ventilator system can include one or more expiratory lumens to evacuate expiratory gases from airways. The use of separate inspiratory lumen(s), with expiratory lumen(s), allows for functional separation of structural portions of the lungs, and maintenance of continuous or almost continuous flow through at least part of respiratory cycle via inspiratory and expiratory lumens. This can further reduce dead space and clear suspended therein diseases causative agents with improvement in outcomes, reduce risk of cross-contamination or cross-infection between different parts of airways, for example such as cross-infection from one lung lobe to another lobe or. The ventilator system allows for independent titration of PEEP, pCO.sub.2 and pO.sub.2 with no need for permissive hypercapnia.

The embodied invention is a new inspiration/expiration ventilator flow design, with a constant inspiration flow and intermittent-concurrent expiratory flow based on lung pressure setpoints. This mode is possible by using a new dual lumen tube inserted into a patient Trachea. Additionally, the control provides support for patient initiated breathing which is initiated by a lung pressure drop. This control provides continuous and gentle recruitment of lung alveoli.

A pulmonary secretion clearing airway structure and related airway management system is disclosed that has a double lumen portion which each lumen of the double lumen portion operably secured to an airway management system so that inspiratory fluid (air/oxygen mixtures, with or without added water vapor) is delivered to the distal end of the ventilation catheter through one of the two lumens and expired inspiratory fluid, pulmonary secretions, and pulmonary fluids are removed from the patient through the other lumen. The expiratory fluid pathway preferably includes a secretion collection system for removing the pulmonary secretions and the like from the pathway, thereby improving operation and safety of the system. The airway structure can be a ventilation catheter or a supraglottic airway system such as laryngeal mask and the like.

A system for delivering oxygen comprises an oxygen source; a ventilator operatively connected to the oxygen source to receive a supply of oxygen therefrom; a valve having a) an open position in which the ventilator receives the supply of oxygen from the oxygen source and b) a closed position in which the ventilator is not in fluid communication with the oxygen source; a sensor configured to measure breath flow information for the patient; and a computer system to: determine a volume of gas delivered to the patient during a breath cycle of the patient and an inspiratory volume of gas delivered to the patient during an inspiration phase of the breath cycle by using the breath flow information; and provide input to the valve based on the determined volumes, the provided input causing a movement of the valve between the open and the closed positions.