CS263154B1 - Airway Pressure Measurement Device for High Frequency Transtrachial Nozzle Ventilation pl * úc - Google Patents

Abstract

The solution relates to a device for measuring pressure in the trachea during high-frequency transtracheal nozzle ventilation of the lungs and for protecting the patient from barotrauma. It consists of a ventilation nozzle, in the casing of which a tube for supplying liquid is placed, for creating an aerosol during inspiration, which is connected by a connecting tube to a pressure sensor and a one-way valve, the opposite end of which is connected to a liquid reservoir. The pressure sensor is connected to an electronic pressure gauge, and the latter to a comparator and a blocking and alarm system of the high-frequency ventilator. The pressure signal is measured during expiration and in the event of exceeding the limit value, a blocking and alarm system is activated, which turns off the ventilator and thus prevents barotrauma. The device can be used for high-frequency ventilation of the lungs.

Description

263154 2

BACKGROUND OF THE INVENTION The present invention relates to a device for indicatively measuring airway pressure in high-frequency transtracheal nozzle ventilation and protecting the patient from barotrauma in the event of a ventilator failure or upper airway closure. It is currently used in certain situations, such as ventilatory support or replacement, high-frequency transtrachial lung ventilation. Its essence lies in the insertion nozzle into the trachea and artificial ventilation through it. The condition of this ventilation is the passage of the upper respiratory tract so that the expired gas can leak out of the patient's respiratory organs. Otherwise, the barotraume would rise from the upward pressure. This problem is inadequate on the fans and the patient must be monitored by one person, but pressure monitoring is introduced into the trachea of the catheter through the upper airways, limiting the benefits of transtracheal jet lung ventilation.

The aforementioned drawbacks are eliminated by a measuring system according to the invention, the principle of which is that in the housing of the ventilation nozzle there is placed a liquid supply tube which is connected to a connecting tube which is connected to a pressure sensor connected to an electronic pressure meter and to a one-way valve. , the opposite end of which is attached to the fluid reservoir.

By utilizing the fluid supply tube for transmitting the pressure signal, it is possible to connect the measurement system to the airway pressure without the need for further manipulation with the patient. By evaluating the pressure signal, it is possible to increase ventilation safety and prevent any lung barotraume.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic representation of a pressure measuring device, and FIG. 2 is a schematic representation of a pressure measuring device and a schematic representation of a patient's berotrauma protection system.

Fig. 1 shows a venting nozzle 1, inserted into the trachea 13, a venting casing 2 with a gas inlet 6, a fluid supply tube 3 to which a supply hose 5 is connected to which a pressure sensor 6 is connected to which the electronical is connected. pressure gauge 9. A one-way valve T is connected to the pressure transducers 6 at the downstream end of which the liquid reservoir f is connected. At the end of the ventilation nozzle 2 is shown the propellant charge 10, the aerosol outlet 12 and the pressure effect direction 11 at the beginning of the expiration.

Fig. 2 schematically illustrates a pressure measuring device and a shematic representation of a patient's barotrauma protection system. Ventilation nozzle 7 pierced in the trachea 13 of the casing nozzle 2, the inlet 4 of which is connected to the outlet 18 of the high-frequency ventilator. Iny liquid. The pressure sensor 6 is coupled to an electronic pressure gauge S1 connected to a comparator 14 whose output is coupled to the blocking and alarm device 15 of the high frequency fan 19. input of propellant gases. At the end of the ventilation nozzle is shown a propellant outlet 10, an aerosol outlet 12, and a pressure effect direction 11 at the beginning of the dispersion.

An inlet tube 5 is connected to the liquid supply tube 2 in the housing of the ventilation nozzle 2, which is connected to the pressure sensors 6 and to the one-way valve 2 whose opposite end is connected to the liquid container 15. In the discharge of the propellant gas nozzle 2, a liquid supply of vacuum is formed at the end of the tube 2M, whereby the liquid part is sucked out and forms an aerosol during the flow. The liquid is aspirated from the liquid reservoir 8 through a one-way valve 2 during inspection. After expiration, the one-way valve 7 is closed by the pressure drop and the pressure from the trachea 13 is transferred through the liquid inlet pipe 9 to the fluid inlet pipe, the connecting pipe 2d of the pressure sensor 2. The pressure is measured with an electronic 2-pressure meter. The signal from the electronic pressure meter 9 is fed to kbparator 14 where it is evaluated

Claims (1)

3 263154, and when the selected value ea is exceeded, it activates the high frequency fan locking and alarm device 15, which results in a blocking of the high frequency fan output 18 and an operator warning. An electronic expiratory pressure, which is close to the end inspiratory pressure, can be evaluated on an electronic pressure gauge. Similarly, the end expiratory pressure can be read, the value of which determines the blocking of ventilation. The device can be used in high frequency transtracheal lung ventilation, possibly in a different way of high frequency ventilation. OBJECT OF THE INVENTION A device for measuring airway pressure in high-frequency transtracheal nozzle ventilation provided with a vent nozzle, characterized in that a tube (3, a liquid inlet, connected to a connection tube (5), which is connected to it) is located in the housing of the ventilation nozzle (2) first, to the pressure sensors (6) connected to the pressure electronic meter (9) and to the one-way valve (7 whose opposite end is connected to the liquid reservoir (8)).