Apparatus for independent ventilation of two lungs with selective use of positive end-expiratory pressures

Claim 1

An apparatus for the independent ventilation of two lungs with selective use of positive end-expiratory pressures, consisting of a respirator (I) coupled with the lungs by means of a double-lumen tracheal tube (II) through two inspiratory and two expiratory branches (5, 6, 7, 8) connected in two inspiratory-expiratory pairs, wherein each pair terminates in a common point of inspiratory and expiratory branches and is coupled with one of two conduits of the double-lumen tracheal tube (II), and one of the expiratory branches contains a positive end-expiratory pressure valve (18), characterized by only one respirator (I) connected with the double-lumen tracheal tube (II) through monitoring - con-. trolling means (III), containing two parallel inspiratory paths (1, 2) and two parallel expiratory paths (3, 4), each coupled with the double-lumen tracheal tube (II) through inspiratory (5, 6) and expiratory (7, 8) branches, respectively, while in one inspiratory path (2), having a common point with the expiratory path (4) not provided with the positive end-expiratory pressure valve, is placed a threshold inspiratory valve (12), connected in series with a pneumatic unidirectional. valve (11), while the pneumatic unidirectional valves (10, 11) are respectively situated in both inspiratory paths (1, 2).

Claim 2

An apparatus for the independent ventilation of two lungs with selective use of positive end-expiratory pressures, consisting of a respirator (I) coupled with the lungs by means of a double-lumen tracheal tube (II) through two inspiratory and two expiratory branches (5, 6, 7, 8) connected in two inspiratory-expiratory pairs, wherein each pair terminates in a common point of inspiratory and expiratory branches and is coupled with one of two conduits of the double-lumen tracheal tube (II), and one of the expiratory branches contains a positive end-expiratory pressure valve (18), characterized by only one respirator (I) connected with the double-lumen tracheal tube (II) through monitoring - con-. trolling means (III), containing two parallel inspiratory paths (1, 2) and two parallel expiratory paths (3, 4), each coupled with the double-lumen tracheal tube (II) through inspiratory (5, 6) and expiratory (7, 8) branches, respectively, while in one inspiratory path (2), having a common point with the expiratory path (4) not provided with the positive end-expiratory pressure valve, is placed a threshold inspiratory valve (12), connected in series with a pneumatic unidirectional. valve (11), while the pneumatic unidirectional valves (10, 11) are respectively situated in both inspiratory paths (1, 2).

Claim 3

An apparatus for independent ventilation of two lungs with selective use of positive end-expiratory pressures, consisting of a respirator (I) coupled with the lungs by means of a double-lumen tracheal tube (II) through two inspiratory and two expiratory branches (5, 6, 7, 8) connected in two inspiratory-expiratory pairs, wherein each pair terminates in a common point of the inspiratory and expiratory branches and is coupled with one of two conduits of double-lumen tracheal tube (II), and one of the expiratory branches contains a positive end-expiratory pressure valve (18), characterized by only one respirator (I) connected with the double-lumen tracheal tube (II) through monitoring - controlling means (III), containing two parallel inspiratory paths . (1, 2) and two parallel expiratory paths (3, 4), each coupled with the double-lumen tracheal tube (II) through inspiratory (5, 6) and expiratory (7, 8) branches, respectively, and at the same.time in at least one of the inspiratory paths .(1, 2) there are placed threshold inspiratory valves .(12, .21), in one inspiratory path one threshold inspiratory.valve respectively, connected in each inspiratory path in series with a pneumatic unidirectional valve (10, 11),and that in both expiratory paths (3, 4) there are placed positive end-expiratory pressure valves (18, 20).

Claim 4

An apparatus for independent ventilation of two lungs with selective use of positive end-expiratory pressures, consisting of a respirator (I) coupled with the lungs by means of a double-lumen tracheal tube (II) through two inspiratory and two expiratory branches (5, 6, 7, 8) connected in two inspiratory-expiratory pairs, wherein each pair terminates in a common point of the inspiratory and expiratory branches and is coupled with one of two conduits of double-lumen tracheal tube (II), and one of the expiratory branches contains a positive end-expiratory pressure valve (18), characterized by only one respirator (I) connected with the double-lumen tracheal tube (II) through monitoring - controlling means (III), containing two parallel inspiratory paths . (1, 2) and two parallel expiratory paths (3, 4), each coupled with the double-lumen tracheal tube (II) through inspiratory (5, 6) and expiratory (7, 8) branches, respectively, and at the same.time in at least one of the inspiratory paths .(1, 2) there are placed threshold inspiratory valves .(12, .21), in one inspiratory path one threshold inspiratory.valve respectively, connected in each inspiratory path in series with a pneumatic unidirectional valve (10, 11),and that in both expiratory paths (3, 4) there are placed positive end-expiratory pressure valves (18, 20).