Abstract: An endotracheal tube with movable endobronchial blocker for one-lung anesthesia is disclosed comprising an endotracheal tube with a a cuff having a small channel formed within the wall of the endotracheal tube along almost the entire length thereof and a catheter with a cuff for endobronchial blockade called an endobronchial blocker which is housed in the small channel and can be let out when in use.

Abstract: A plastic medical respiratory conduit is provided having a first tubular helical coil conduit communicating with a first source of fluid. The coil conduit is wrapped with a pliable tape to form a second conduit communicating with a second source of fluid. Resilient couplers can be attached to each end of the conduit to form part of a medical ventilator or humidification system, the resulting ventilator or humidification system providing heretofore unavailable advantages.

Abstract: The conditioned air from a ventilator enters one chamber in a manifold, which chamber has a connection to an inspiratory conduit through which the conditioned air is conducted to the patient. The expiratory conduit from the patient communicates in the manifold with a second chamber, positioned below the first chamber. A wall in the manifold at the lowermost part of the first chamber defines an orifice providing fluid communication between the two chambers. At the lower part of the second chamber is the expiratory valve which is pulsed by the ventilator. Adjacent the patient is a slanted "Y" and elbow which provide communication between the inspiratory conduit, the expiratory conduit, and the patient's single endotracheal or tracheostomy tube. Various ports are provided in the "Y" and elbow and are closed by caps. These ports provide connections suitable for various needs such as temperature measurement, ventilator temperature controller probe, etc.

Abstract: The improved esophageal-endotracheal airway comprises an elongated flexible assembly having a shorter outer tube and a longer inner tube. The assembly is adapted to be inserted into the trachea or the esophagus. An expandable member is carried on the outer wall and near the distal end of each tube. The outer wall of the inner tube and the inner wall of the outer tube form an annular channel therebetween.

Abstract: An apparatus for resuscitating, administering anesthesia to, or administering respiratory care to a patient is shown which allows greater rebreathing of mixed expired gases thus improving humidification and heat retention in the inspired gases. The inhalation breathing circuit may include two concentric, non-kinking, corrugated tubes, one visually apparent within the other, for handling both fresh gases and mixed expired gases of the patient or the inhalation breathing circuit may consist of a spiralled inflow tube contained within the wall of the larger exhalation corregated tube. An adjustable exhaust pressure valve maintains a predetermined pressure range for the gas being delivered to-and-fro between a breathing bag and the patient. Expired gases vent through an anesthesia bacterial filter or may be scavenged to prevent environmental pollution. Suctioning of the patient may be performed without interrupting the fresh gas flow or ventilation to the patient.

Abstract: A flow control device for inhalation anaesthesia apparatus, the control device being connectable between a co-axial tube system and a face mask or the like and having a jet whereby exhaled gases are preferentially directed into an inner supply tube of the co-axial system. The control device has a body member in which the jet is removably secured and to which an outer connecting member is connectable. A further inner connecting member is located within the outer connecting member and is secured thereto by vanes. There is a space between the inner connecting member and the body member so that there is fluid communication between the interior of the inner connecting member and the annular space between it and the outer connecting member. The inner tube of the co-axial system is connected to the inner connecting member and the outer tube to the outer connecting member.

Abstract: This application discloses a unilimb device of universal application to different types of breathing systems. The device comprises two gas carrying tubes, one within the other, the corresponding ends of the tubes being within two common terminal elements. One of the terminal elements provides for two separate passages, each being connectable, one to a source of gas, and the other for disposition of the expiratory gases. The other terminal element includes a nozzle end for connection to the inlet for the patient's respiratory system, with the opposite end serving to receive the other ends of the two flexible tubes and to provide short passages to the nozzle to minimize dead air space. Provision may be made for telescoping each terminal element, and the inlet element may be provided with a member for extending or adapting it to different breathing systems.

Abstract: An apparatus for delivering continuous positive airway pressure to a patient (e.g., an infant) includes a cradle assembly for firmly and adjustably supporting the head of a patient to whom continuous positive airway pressure is to be delivered, a support frame assembly mounted on the cradle assembly for adjustably supporting a disposable airway set, and a disposable airway set which receives fresh air and delivers it, under pressure, to a patient. The cradle assembly includes a head-supporting cradle which may be moved to any one of a number of angular positions. A pair of adjustable head-restraining plates are mounted in the cradle for firmly supporting heads of different sizes. The support frame assembly which receives and holds the disposable airway set is mounted on one end of the head-supporting cradle and can be adjusted relative to the cradle for accurate positioning of a nasal cannula at the delivery end of the disposable airway set.

Abstract: New and improved single limb breathing circuit assembly for use in a circle absorbed anesthetic system is disposed within and surrounded by the expiratory limb to provide for heating of the inhaled gases by the exhaled gases. Valve means insure that substantially all exhalation occurs in the expiratory limb and that substantially all inhalation occurs in the inspiratory breathing limb to prevent re-breathing of exhaled carbon dioxide. The absorber comprises inlet and internal outlet conduits which combine to assure the flow of gases from the absorber at high humidity levels. Valve means are also provided to proportion the fresh gas inflow to the absorber between the inlet and outlet conduits to enable control of the humidity of the gases flowing from the absorber within a predetermined range. The various portions of the system are arranged so as to minimize both heat and moisture loss in the inhaled gases passing through the absorber for conveyance to the patient.