A breathing device and a ventilator

Abstract

The present invention relates to the field of medical equipment, and discloses a breathing device and a ventilator, comprising a gas mixing module formed by sequentially connecting an air source switching valve, a main valve, a proportional valve and a gas mixer, wherein the gas mixing module comprises a first pipeline between an air outlet of the air source switching valve and an air inlet of the main valve, wherein the air outlet of the proportional valve is connected to a first air inlet of the gas mixer; a breathing control module formed by sequentially connecting an inhalation check valve, a simulated lung and an exhalation valve, a connecting pipeline being arranged between an air inlet of the breathing control module and an air outlet of the gas mixing module; the air outlet of the breathing control module and the first pipeline are connected to each other through a second pipeline; the waste gas exhaled by a human body can be reused, a humidifying device can be reduced, high-pressure oxygen can be saved, energy can be saved, and efficiency can be improved.

Description

[Technical Field]

[0001] The present invention relates to the field of medical equipment, and in particular to a breathing device and a ventilator. [Background Technology]

[0002] In the existing technology, ventilators can provide oxygen to patients through high-pressure gas cylinders to help patients with no breathing, respiratory failure or sudden breathing difficulties to provide lung ventilation. At present, the number of patients who need to use ventilators every year in the world has exceeded 200 million for general anesthesia alone, and there are also patients who need respiratory support for respiratory failure, emergency resuscitation, etc. It can be seen that the market for ventilators is very huge.

[0003] The existing connection method between the ventilator and the human respiratory system is that the human body generally only has a utilization rate of about 50% of oxygen. During the exhalation process, the residual oxygen content of the waste gas is about 50% of the inhaled gas, and the waste gas is directly discharged into the atmosphere, which is a serious waste. In addition, the ventilator needs to be equipped with a humidifier to process the gas waiting to be inhaled into moist gas suitable for human lungs. In short, the utilization rate of the oxygen source of the current ventilator is low, and a humidifier needs to be added, which wastes energy and has low efficiency. [Summary of the invention]

[0004] The present invention aims to provide a breathing device and a ventilator, which can recycle the waste gas exhaled by the human body, reduce the humidification device, save high-pressure oxygen, save energy, and improve efficiency.

[0005] In order to achieve the purpose of the above invention, the technical solution adopted in the first aspect of the present invention is: a breathing device, comprising:

[0006] A gas mixing module formed by sequentially connecting a gas source switching valve, a main valve, a proportional valve and a gas mixer, wherein the gas mixing module comprises a first pipeline between a gas outlet of the gas source switching valve and a gas inlet of the main valve, wherein the gas outlet of the proportional valve is connected to a first gas inlet of the gas mixer;

[0007] A breathing control module formed by sequentially connecting an inhalation check valve, a simulated lung and an exhalation valve, wherein a connecting pipeline is provided between an air inlet of the breathing control module and an air outlet of the gas mixing module;

[0008] The air outlet of the breathing control module and the first pipeline are communicated with each other through a second pipeline.

[0009] Preferably, a recirculation pressure regulating valve is also provided on the second pipeline.

[0010] Preferably, an exhalation control valve is further provided between the air inlet of the exhalation valve and the air outlet of the simulated lung.

[0011] Preferably, a safety valve is further provided between the air inlet of the breathing control module and the air outlet pipeline of the gas mixer.

[0012] Preferably, a pressure sensor is further provided between the air outlet of the inhalation one-way valve and the air inlet of the simulated lung.

[0013] Preferably, an oxygen concentration sensor is also provided between the air outlet of the inhalation one-way valve and the air inlet of the simulated lung.

[0014] Preferably, a flow rate sensor is provided on the air inlet and outlet pipes of the simulated lung.

[0015] The technical solution adopted in the second aspect of the present invention is: a ventilator, comprising any one of the above-mentioned breathing devices.

[0016] Preferably, it further comprises a high-pressure oxygen source module and a low-pressure oxygen source module, the gas outlet port of the high-pressure oxygen source module is provided with a third pipeline, the gas source switching valve comprises two gas source ports, one of the gas source ports is connected to the third pipeline, and the other is connected to the output pipeline of the low-pressure oxygen source module.

[0017] Preferably, the gas mixing module further includes an auxiliary valve and an oxygen regulating valve, and the gas outlet port of the high-pressure oxygen source module is further provided with a fourth pipeline, and the fourth pipeline is sequentially connected with the auxiliary valve, the oxygen regulating valve and the gas mixer, wherein the gas outlet of the oxygen regulating valve is connected with the second gas inlet of the gas mixer.

[0018] The beneficial effects of the present invention are:

[0019] Compared with the prior art, the present invention can recycle the waste gas exhaled by the human body, reduce the humidification device, save high-pressure oxygen, save energy, and improve efficiency. [Description of the attached figure]

[0020] Figure 1 It is a principle block diagram of a preferred embodiment of the present invention;

[0021] Figure 2 It is an overall schematic diagram of a preferred embodiment of the present invention;

[0022] The accompanying drawings are denoted as follows:

[0023] 10. Gas mixing module; 101. Gas source switching valve; 102. Main valve; 103. Proportional valve; 104. Gas mixer; 105. First pipeline; 106. Auxiliary valve; 107. Oxygen regulating valve;

[0024] 20. Breathing control module; 201. Inhalation check valve; 202. Simulated lung; 203. Exhalation valve; 204. Exhalation control valve; 205. Safety valve; 206. Pressure sensor; 207. Oxygen concentration sensor; 208. Flow rate sensor;

[0025] 30. Second pipeline; 301. Recirculation pressure regulating valve;

[0026] 40. High-pressure oxygen source module; 401. High-pressure oxygen interface; 403. High-pressure oxygen pressure regulating valve; 404. Third pipeline; 405. Fourth pipeline;

[0027] 50. Low-pressure oxygen source module; 501. Low-pressure oxygen interface; 503. Low-pressure oxygen pressure regulating valve;

[0028] 601. Atomization interface; 602. Air source pressure upper limit adjustment knob; 603. Air pressure gauge 603.

[0029] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings. [Specific implementation method]

[0030] like Figure 1-Figure 2 As shown, a ventilator includes a breathing device, a high-pressure oxygen source module 40 and a low-pressure oxygen source module 50, the breathing device includes a gas mixing module 10, a breathing control module 20 and a second pipeline 30, the gas mixing module 10 is formed by a gas source switching valve 101, a main valve 102, a proportional valve 103 and a gas mixer 104 connected in sequence, the ventilation pipeline between the gas outlet of the gas source switching valve 101 and the gas inlet of the main valve 102 is a first pipeline 105, wherein the gas mixer 104 may include an inlet, a gas mixing chamber and an outlet, and the gas outlet of the proportional valve 103 is connected to the first gas inlet of the gas mixer 104; The main valve 102 is a solenoid valve, and the proportional valve 103 is a regulating valve for adjusting the intake ratio of high-pressure oxygen and low-pressure oxygen; the high-pressure oxygen source module 40 is a module in the prior art, which generally provides high-pressure oxygen, including a ventilation module composed of a high-pressure oxygen interface 401, a one-way valve and a high-pressure oxygen pressure regulating valve 403, wherein the high-pressure oxygen pressure regulating valve 403 can be adjusted by an air source pressure upper limit adjusting knob 602, and its electrical connection is the content of the prior art and will not be repeated; and the low-pressure oxygen source module 50 is also a module in the prior art, which generally provides air at normal temperature and pressure, including a ventilation module composed of a low-pressure oxygen interface 501, a one-way valve and a low-pressure oxygen pressure regulating valve 503.

[0031] The breathing control module 20 is formed by connecting an inhalation check valve 201, a simulated lung 202 and an exhalation valve 203 in sequence. A connecting pipeline is provided between the air inlet of the inhalation check valve 201 and the air outlet of the gas mixer 104, which is used to obtain a mixed gas with a suitable oxygen concentration and pressure from the gas mixer 104; the air outlet of the exhalation valve 203 and the first pipeline 105 are connected to each other through the second pipeline 30, so that the breathing device becomes a closed-loop breathing device, and the waste gas discharged from the simulated lung 202 re-enters the gas mixing module 10 and the breathing control module 20 for recycling. This embodiment can reuse the waste gas exhaled by the human body, reduce the humidification device, save high-pressure oxygen, save energy, and improve efficiency. The simulated lung 202 can be sealed and plugged into the atomization interface 601.

[0032] Preferably, the gas outlet port of the high-pressure oxygen source module 40 is provided with a third pipeline 404, and the gas source switching valve 101 is a solenoid valve, preferably a two-position three-way solenoid valve, including two gas source ports for air intake, one of the gas source ports is connected to the third pipeline 404, and the other is connected to the output pipeline of the low-pressure oxygen source module 50, and the valve core of the gas source switching valve 101 is switched between two valve positions, so that the gas mixing module 10 can obtain high-pressure oxygen and low-pressure oxygen.

[0033] Preferably, the gas mixing module 10 further includes an auxiliary valve 106 and an oxygen regulating valve 107, wherein the auxiliary valve 106 is a solenoid valve, and the oxygen regulating valve 107 is used to adjust the intake amount of high-pressure oxygen. The outlet port of the high-pressure oxygen source module 40 is also provided with a fourth pipeline 405, and the fourth pipeline 405 is sequentially connected with the auxiliary valve 106, the oxygen regulating valve 107 and the gas mixer 104, wherein the gas mixer 104 may include two air inlets, a gas mixing chamber and an air outlet, the air outlet of the proportional valve 103 is connected to the first air inlet of the gas mixer 104, and the air outlet of the oxygen regulating valve 107 is connected to the second air inlet of the gas mixer 104. The adjustment accuracy of the oxygen concentration can be optimized, and the symptoms of atelectasis of the patient can be reduced.

[0034] Preferably, a recirculation pressure regulating valve 301 is further provided on the second pipeline 30 to increase the pressure of the exhaust gas entering the internal circulation.

[0035] Preferably, an exhalation control valve 204 is further provided between the air inlet of the exhalation valve 203 and the air outlet of the simulated lung 202. The full name of the exhalation control valve 204 in English is Positive end-expiratory pressure, abbreviated as PEEP valve. Under the condition of command ventilation, the exhalation control valve 204 can maintain a certain level of positive pressure during the entire exhalation process to prevent symptoms of atelectasis.

[0036] Preferably, a safety valve 205 is further provided between the air inlet of the breathing control module 20 and the air outlet pipeline of the gas mixer 104. When the pressure exceeds a set upper limit, the safety valve 205 starts to discharge the excess pressure to ensure the safety of the patient.

[0037] Preferably, a pressure sensor 206 is further provided between the air outlet of the inhalation check valve 201 and the air inlet of the simulated lung 202. A barometer 603 may also be provided on the visible surface of the embodiment of the present invention to display the value of the pressure sensor 206.

[0038] Preferably, an oxygen concentration sensor 207 is further provided between the air outlet of the inhalation one-way valve 201 and the air inlet of the simulated lung 202 .

[0039] Preferably, a flow rate sensor 208 is provided on the air inlet and outlet pipes of the simulated lung 202 .

[0040] The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Any equivalent changes made according to the shape, structure and principle of the present invention, such as replacing the solenoid valve with a pneumatic valve; or changing the arrangement order of the components on the gas mixing module 10, the breathing control module 20, the high-pressure oxygen source module 40 or the low-pressure oxygen source module 50; the gas mixer 104 adopts the form of multiple air inlets, etc., should all be covered within the protection scope of the present invention.

Claims

1. A ventilator, characterized in that: include: A gas mixing module formed by sequentially connecting a gas source switching valve, a main valve, a proportional valve and a gas mixer, wherein the gas mixing module comprises a first pipeline between a gas outlet of the gas source switching valve and a gas inlet of the main valve, wherein the gas outlet of the proportional valve is connected to a first gas inlet of the gas mixer; A high-pressure oxygen source module and a low-pressure oxygen source module, wherein the gas outlet port of the high-pressure oxygen source module is provided with a third pipeline, and the gas source switching valve is a two-position three-way solenoid valve, comprising two gas source ports, one of which is connected to the third pipeline, and the other is connected to the output pipeline of the low-pressure oxygen source module; A breathing control module formed by sequentially connecting an inhalation check valve, a simulated lung and an exhalation valve, wherein a connecting pipeline is provided between an air inlet of the breathing control module and an air outlet of the gas mixing module; The air outlet of the breathing control module and the first pipeline are communicated with each other through a second pipeline, and a recirculation pressure regulating valve is also arranged on the second pipeline.

2. The ventilator according to claim 1, characterized in that: An exhalation control valve is also provided between the air inlet of the exhalation valve and the air outlet of the simulated lung.

3. The ventilator according to claim 1, characterized in that: A safety valve is also provided between the air inlet of the breathing control module and the air outlet pipeline of the gas mixer.

4. The ventilator according to claim 1, characterized in that: A pressure sensor is also provided between the air outlet of the inhalation one-way valve and the air inlet of the simulated lung.

5. The ventilator according to claim 1, characterized in that: An oxygen concentration sensor is also provided between the air outlet of the inhalation one-way valve and the air inlet of the simulated lung.

6. The ventilator according to claim 1, characterized in that: A flow rate sensor is arranged on the air inlet and outlet pipes of the simulated lung.

7. The ventilator according to claim 1, characterized in that: The gas mixing module also includes an auxiliary valve and an oxygen regulating valve. The gas outlet port of the high-pressure oxygen source module is also provided with a fourth pipeline, and the fourth pipeline is connected with the auxiliary valve, the oxygen regulating valve and the gas mixer in sequence, wherein the gas outlet of the oxygen regulating valve is connected with the second gas inlet of the gas mixer.

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