Fluid discharging aerating breathing system

TECHNICAL FIELD The present invention relates to a respiratory system for the treatment of acute respiratory distress syndrome, in particular to a respiratory system that can drain the patient's alveolar and pulmonary interstitial fluid and improve the patient's lung ventilation function.

Background Art Acute Respiratory Distress Syndrome (ARDS, Acute Respiratory Distress Snydrome) patients pulmonary pathology showed that the patient developed pulmonary edema, pleural effusion, and large amounts of effusion in the alveoli and interstitium, which caused the loss or greatly reduced pulmonary ventilation function, thereby causing hypotension. Oxygenemia caused the patient's death. Therefore, timely restoration of pulmonary ventilation is the key to the treatment of ARDS. For example, in SARS patients who have been prevalent, acute respiratory distress syndrome ARDS is caused by viral infection in the lungs, and correcting ARDS is to help SARS patients. Overcoming life and death is the key to greatly reducing its mortality rate.

At present, the ventilator generally used in clinical treatment of ARDS patients is to achieve positive pressure ventilation into the trachea to achieve the purpose of expanding alveoli, increasing lung ventilation, and improving blood oxygen concentration. The current method of ventilation is only to improve lung ventilation by ventilating into the conduction trachea, as shown in the upper part of the lung in Figure 2. However, the main pathological manifestations of ARDS patients are alveolar and pulmonary interstitial edema, alveolar collapse, and small size. Pulmonary atelectasis, pulmonary hyaline membrane formation, pathophysiological manifestations of decreased lung compliance, clinical manifestations of stubborn severe hypoxemia, respiratory distress, despite the use of mechanical ventilation with a ventilator (PEEP) to expand alveoli and increase oxygenation the goal of. However, because the human alveoli has been occupied by a large amount of fluid, ordinary ventilator (PEEP) is actually difficult to continuously improve oxygenation and achieve the purpose of effective ventilation.

In view of this, it is urgent to develop a new device and method to overcome the shortcomings of the existing technology.

200310124858.0 SUMMARY OF THE INVENTION The purpose of the present invention is to provide a respiratory system for drainage and ventilation, which is based on the premise of expelling fluid in the patient's alveoli, and then effectively ventilates the alveoli through the respiratory system. The technical feature of the system is that the lower half of the lung itself has the function of breathing and ventilation, and a positive and negative pressure generator is used to apply a certain pressure to the lungs to squeeze the alveolar and interstitial fluid to the bronchus and throat. Then use a negative pressure aspirator to discharge the fluid in the lungs out of the body, and at the same time, according to the breathing rate, use an ultrasonic assist device to apply pure oxygen and aerosolized medicine to the lungs to inhibit the re-increase of fluid accumulation in the alveoli And to improve lung inflammation, this draining and ventilating respiratory system can greatly improve the ventilation function of the lungs, increase blood oxygen levels, and reduce the mortality rate of ARDS patients.

To achieve the above objectives, the present invention provides a breathing system for drainage and ventilation, which includes: a positive and negative pressure generator, a control device, a gas pressure monitoring device, a flow monitoring device, a liquid-gas separator, and an ultrasonic auxiliary device , Chest connection tube and negative pressure suction device.

The positive and negative pressure generator is connected with the liquid-gas separator and the control device, the air pressure monitoring device and the flow monitoring device.

One end of the control device is connected with an air pressure monitoring device and a flow monitoring device, and the other end is connected with a positive and negative pressure generator, an ultrasonic auxiliary device and a negative pressure suction device.

The air pressure monitoring device is connected to the air duct and is located between the positive and negative pressure generator and the flow monitoring device.

The flow monitoring device is connected to the air guide pipe and is located between the air pressure monitoring device and the liquid-gas separator part.

The liquid-gas separator, the liquid-gas separator is arranged on the air duct, between the flow monitoring device and the thoracic cavity connecting tube; the thoracic cavity connecting tube, one end of which is connected with the liquid-gas separator, and the other end is introduced into the thoracic cavity.

200310124858.0 This ultrasonic auxiliary device is connected to the control device and acts on the lungs.

The negative pressure serotoner is connected to the control device and acts on the lungs.

The system can safely discharge the fluid in the alveoli, increase the gas exchange space in time, so as to increase the effective ventilation of the alveoli, improve oxygenation, and increase the partial pressure of arterial oxygen in patients with ARDS and severe ARDS. It is a key device to reduce the mortality rate of patients.

The novelty, creativity and practicability of the present invention are explained in detail by the following specific embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings Fig. 1 is a schematic block diagram of the respiratory system for drainage ventilation of the present invention; Fig. 2 is a schematic diagram of connecting the lungs with a traditional ventilator; Fig. 3 is a schematic diagram of the lungs connected to the drainage ventilation system of the present invention; The schematic diagram of the structure of Embodiment 1 of the ventilating breathing system; FIG. 5 is a schematic diagram of the principle of Embodiment 2 of the draining ventilating system.

Explanation of symbols in the figure

<td>1</td><td>Positive and negative pressure generator</td><td>2</td><td>Control device</td>

<td>3</td><td>Air pressure monitoring device</td><td>4</td><td>Flow monitoring device</td>

<td>5</td><td>Liquid gas separator</td><td>6</td><td>Ultrasonic auxiliary device</td>

<td>7</td><td>Thoracic connecting tube</td><td>8</td><td>Negative pressure suction device</td>

<td>9</td><td>Lungs</td><td>10</td><td>Chest cavity</td>

<td>11</td><td>Alveolar and interstitial effusion</td><td>12</td><td>Motor</td>

<td>13</td><td>slow down</td><td>14</td><td>Screw</td>

<td>15</td><td>cylinder</td><td>16</td><td>Piston nut</td>

<td>17</td><td>Air duct</td><td>18</td><td>Trachea and larynx</td>

200310124858.0 No.

<td>19</td><td>Ultrasound head</td><td>20</td><td>Control device</td>

<td>21</td><td>CO2 gas cylinder</td><td>22</td><td>Liquid gas separator</td>

<td>23</td><td>Manual precision regulating valve</td><td>24</td><td>The electromagnetic valve</td>

<td>25</td><td>Pressure Switch</td><td>26</td><td>Constant pressure gas tank</td>

<td>27</td><td>Flow proportional valve</td><td>28</td><td>The electromagnetic valve</td>

<td>29</td><td>Pressure Switch</td><td>30</td><td>Liquid gas separator</td>

<td>31</td><td>Liquid gas separator</td><td>32</td><td>The electromagnetic valve</td>

<td>33</td><td>Flow proportional valve</td><td>34</td><td>Manual precision regulating valve</td>

<td>35</td><td>Negative pressure tank</td><td>36</td><td>Pressure Switch</td>

<td>37</td><td>The electromagnetic valve</td><td>38</td><td>Vacuum pump</td>

<td>39</td><td>Virus filter</td><td>40</td><td>Breath sensor</td>

<td>41</td><td>The electromagnetic valve</td><td>42</td><td>Atomizer</td>

<td>43</td><td>oxygen cylinder</td><td>44</td><td>Manual precision regulating valve</td>

<td>45</td><td>The electromagnetic valve</td><td></td><td></td>

DETAILED DESCRIPTION As shown in Figure 1, the breathing system for drainage and ventilation provided by the present invention includes: a positive and negative pressure generator 1, a control device 2, an air pressure monitoring device 3, a flow monitoring device 4, a liquid The gas separator 5, an ultrasonic auxiliary device 6, the thoracic cavity connecting tube 7 and the negative pressure suction device 8.

As shown in Figures 1 and 4, the positive and negative pressure generator 1 of the present invention can be constituted by a device capable of generating positive and negative atmospheric pressures such as a cylinder 15, a piston 16, a screw rod 14, or a vane pump or a peristaltic pump. The upper part of the cylinder 15 of the positive and negative pressure generator is in communication with the atmosphere, and the bottom of the cylinder is connected to the liquid-gas separator 5 and the chest cavity connecting tube 7 through the air guide tube 17, and is also connected to the control device 2, the air pressure monitoring device 3, and the flow monitoring device. 4 Connected.

The function of the control device 2 of the invention is to coordinate and control the operation of the overall device, so that

200310124858.0 The pressure and flow rate of the gas produced by the first positive and negative pressure generator 1 meet the requirements of treatment. The function of the air pressure monitoring device 3 of the present invention is to monitor and control the atmospheric pressure generated by the positive and negative pressure generator 1 so that it is controlled within the maximum positive and negative pressure range that the human lungs can withstand. The function of the flow monitoring device 4 of the present invention is to monitor and control the size of the gas flow generated by the positive and negative pressure generator 1 so that it can meet the requirements of treatment.

Figure 2 is a schematic diagram of connecting the lungs with a traditional ventilator. The dotted line in the figure is a schematic diagram of the outline of the lung 9 under low pressure, and the solid line is a schematic diagram of the outline of the lung 9 under high pressure. It can be seen from the figure that using a traditional ventilator It can only improve the ventilation function of 9 parts of the lungs, but cannot discharge the fluid in the lungs.

Figure 3 shows a schematic diagram of the connection between the thoracic cavity connecting tube 7 and the lungs, and the negative pressure suction device 8 connecting to the trachea. It can be seen from the figure that the lung connecting tube 7 is introduced into the chest cavity 10 through the opening in the chest cavity 10, and the positive and negative pressure The generator 1 compresses the lung 9 and forces the lung 9 to contract or dilate, and squeeze the alveolar and interstitial fluid 11 to the trachea and larynx 18, as shown by the solid line in Figure 3, and then use negative pressure to inhale The fluid device 8 drains it out of the body, and after draining the effusion, it can significantly improve the lung ventilation function and increase the blood oxygen content.

Figure 4 shows a schematic diagram of a specific embodiment of the structure device. The device consists of a positive and negative pressure generator 1, a control device 2, a gas pressure monitoring device 3, a flow monitoring device 4, a liquid-gas separator 5, and an ultrasonic wave. The auxiliary device 6 and the thoracic cavity connecting tube 7 are composed. The positive and negative pressure generator 1 mainly includes a motor 12, a reducer 13, a screw rod 14, a cylinder 15, and a piston nut 16. The motor 12 is connected to the screw rod 14 through the reducer 13, the screw rod 14 and the piston nut 16 are connected by threads, and the screw rod 14 and the piston nut 16 can move relatively. The piston nut 16 is well sealed with the cylinder wall, the upper part of the cylinder 15 is in communication with the atmosphere, and the bottom of the cylinder 15 is connected to the liquid-gas separator 5, the control device 2, the flow monitoring device 4, the air pressure monitoring device 3, and the chest cavity connecting pipe 7 through the air guiding pipe. Connected.

The control device 2 is arranged on the air duct 17, one end is connected to the positive and negative pressure generator 1 and the liquid-gas separator 5, and the other end is connected to the flow monitoring device 4 and the air pressure monitoring device 3.

200310124858.0 The first role is to coordinate and control the operation of this device, so that the pressure and flow of the gas produced by the positive and negative pressure generator 1 meet the requirements of treatment. The control device 2 collects the values fed back by the flow monitoring device 4 and the air pressure monitoring device 3, and compares the values with the treatment requirements through internal calculations, so as to control the speed of the motor 12 so that the flow and pressure generated by the cylinder 15 meet the treatment requirements.

The air pressure monitoring device 3 is connected to the air guide pipe 17 and is located between the air cylinder 15 and the flow monitoring device 4. The flow monitoring device 4 is connected to the air guide pipe 17±, and the position is between the air pressure monitoring device 3 and the liquid-gas separator 5.

The liquid-gas separator 5 is arranged in the air duct 17±, between the flow monitoring device 4 and the thoracic cavity connecting tube 7. The function of the liquid-gas separator part 5 of the present invention is to separate the moisture and impurities in the gas entering and leaving the chest cavity, and at the same time also serves as a buffer for the instant high-pressure shock of the device starting.

The ultrasonic auxiliary device 6 includes an ultrasonic head 19, which acts on the lungs of the patient. The ultrasonic head 19 acts to stimulate the lung tissue and discharge the pulmonary interstitial fluid. The ultrasonic auxiliary device 6 generates low-frequency ultrasonic waves with a frequency of 20KHz~100KHz. When each decompression is over, an ultrasonic auxiliary device is used to apply pure oxygen and aerosolized medicine to the lungs according to the breathing frequency to inhibit the accumulation of fluid in the alveoli Increase and improve lung inflammation again. The ultrasonic assisting device acts on the patient's lungs and stimulates lung tissue through mechanical vibration of low-frequency ultrasonic waves, so that the patient's pulmonary interstitial effusion can seep into the alveoli, making it easier to partially suck the effusion out of the body with a negative pressure suction device.

The thoracic cavity connecting tube 7 of the present invention can be divided into two types: flexible or rigid. During treatment, implantation or penetration can be used to connect the device and the human thoracic cavity according to the actual situation.

The negative pressure suction device 8 of the present invention sucks the fluid accumulated in the larynx and bronchus 18 out of the body by using the air pressure difference. A suction device that can generate negative pressure, such as a sputum suction device, can also be used.

200310124858.0 First in the specific implementation process, the motor 12 rotates through the reducer 13 to drive the screw 14 to rotate, and the screw 14 drives the piston nut 16 to move up and down. When the piston nut 16 moves up, negative pressure is generated in the cylinder 15 of the positive and negative pressure generator 1. When the piston nut 16 moves downward, positive pressure is generated in the cylinder 15. This positive pressure or negative pressure is connected to the thoracic cavity connecting tube 7 through the air duct. The thoracic cavity connecting tube 7 is implanted or pierced into the chest cavity 10 of the patient to generate positive or negative pressure in the chest cavity 10 of the patient to compress the lungs 9 of the patient. The lungs 9 are forced to contract or relax, squeeze the alveolar and interstitial fluid into the trachea and throat 18, and expel it from the body through the negative pressure suction device 8, improving lung ventilation and increasing blood oxygen content.

Figure 5 is a schematic diagram of the principle of another specific embodiment of the drainage and ventilation system. The difference from embodiment 1 is that the positive and negative pressure generators in embodiment 1 are replaced by high-pressure gas cylinders and low-pressure gas cylinders in embodiment 2 of. CO in the picture₂The gas cylinder 21 is a general hospital CO? gas cylinder, the gas-liquid separator 22 is used to separate the liquid in the CO?, the manual precision regulating valve 23 and the gas-liquid separator 22 are CO₂The accessory parts of the gas cylinder 21. When working, open the manual precision regulating valve 23, and the control device 20 will detect the value of the pressure switch 25. When the value is less than the set value, the solenoid valve 24 will be activated, and the CO gas will be filled with constant pressure When the gas tank 26 reaches the set value, the solenoid valve 24 is closed, so that the constant pressure gas tank 26 will maintain a constant pressure.

When the chest cavity is filled with gas, the control device opens the solenoid valve 28, and when the pressure switch 29 reaches the set value, it closes the solenoid valve 28. The flow proportional valve 27 is used to control the speed of the gas flow.

The negative pressure gas tank 35 will maintain a constant negative pressure under the control of the pressure switch. When the pressure is greater than the set value, the vacuum pump 38 starts to work and the solenoid valve 37 opens. When the pressure reaches the set value, the solenoid valve 37 closes.

When extracting gas from the chest cavity, first open the manual precision regulating valve 34, and then the control device 20 opens the solenoid valve 32. When the pressure switch 29 reaches the set value, the solenoid valve 32 is closed. The flow proportional valve 33 is used to control the speed of the gas flow. The gas-liquid separator 30 and the gas-liquid separator 31 are used to separate liquid in the gas.

200310124858.0 The first oxygen cylinder 43 is a general hospital oxygen cylinder. The manual precision regulating valve 44 is an accessory part of the oxygen cylinder 43. The atomizer 42 atomizes the liquid medicine into fine droplets. The breath sensor 40 can detect human breathing. Frequency: When a person inhales, the solenoid valve 41 is closed and the solenoid valve 45 is opened. Oxygen takes the atomized droplets through the catheter and enters the respiratory tract as the patient inhales. When a person exhales, the solenoid valve 45 is closed and the solenoid valve 41 is opened. The virus filter 39 functions to filter viruses in exhaled and inhaled air.

The function of the control device 20 of the invention is to coordinate and control the operation of the overall device, so that the pressure and flow rate of the gas generated by the positive and negative pressure cylinders can meet the requirements of treatment. The function of the pressure switches 29, 25, and 36 of the present invention is to monitor and control the pressure of positive and negative pressure gas so as to be controlled within the maximum positive and negative pressure range that the human lungs can withstand. The function of the flow proportional valves 27 and 33 of the present invention is to monitor and control the flow rate of positive and negative pressure gas, so that it can meet the requirements of treatment.

The thoracic cavity connection part, the negative pressure suction device, etc. in Embodiment 2 are the same as those in Embodiment 1, and are omitted in the figure.

Through the above-mentioned embodiment 1, embodiment 2 and comparing Fig. 2 and Fig. 3, it can be seen that the present invention has a completely different idea from the traditional ventilator. The traditional method of ventilator is only to apply a positive pressure to the lungs to achieve the purpose of ventilation. The present invention uses a positive and negative pressure generator and intubates from the lungs, applies a certain pressure, squeezes the lung fluid, sucks out the pulmonary fluid, and at the same time applies oxygen to the lungs according to the breathing frequency , Increase blood oxygen content, so as to achieve the purpose of ventilation. This system more effectively solves the ventilation problem of patients with acute respiratory distress syndrome, and has made significant progress, and a patent application is filed.

The above are only specific embodiments of the present invention, and are not intended to limit the scope of the patent application of the present invention. All other equivalent changes or modifications made without departing from the spirit of the present invention should be included in the description. In the scope of patent application.

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