Ventilation method capable of controlling ventilation volume and manual resuscitator apparatus

Abstract

The present invention relates to the technical field of medical equipment. Disclosed are a ventilation method capable of controlling ventilation volume and a manual resuscitator apparatus. The manual resuscitator apparatus comprises: an air control valve and a flow sensor which are arranged on an air outlet pipe of a respirator, wherein a connecting pipe is arranged as a bypass on the air outlet pipe, the connecting pipe is provided with a three-way valve enabling the connecting pipe to selectively communicate with a control side of the air control valve, and a pressure relief opening selectively communicating with the control side of the air control valve is formed on one side of the three-way valve; and a control module which acquires the ventilation volume of the respirator on the basis of the airflow rate measured by the flow sensor and controls, on the basis of the ventilation volume, whether the three-way valve switches to an air path, enabling the air outlet pipe to be in an open or closed state by means of the air control valve. A switch valve used for controlling the opening and closing of the air outlet pipe is formed by means of the air control valve and the three-way valve. Compared with a large-flow-rate large-power-consumption switch valve, a low-power-consumption small-diameter three-way valve is selected so that the control module can control the three-way valve to indirectly control the opening and closing of the air control valve. The present invention achieves quantitative ventilation while retaining the advantage of a manual resuscitator of being compact and portable.

Description

A ventilation method with controllable ventilation volume and an artificial resuscitator device Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a ventilation method with controllable ventilation volume and an artificial resuscitator device. Background Art

[0002] An artificial resuscitator, also known as a simple ventilator, mainly uses a simple or mechanical device to provide forced ventilation for patients who are not breathing, and assisted breathing for patients with respiratory disorders. Compared with mouth-to-mouth breathing, it provides a higher oxygen concentration and is easier to operate. Especially when the patient's condition is critical and there is no time for tracheal intubation, a pressurized mask can be used to directly supply oxygen to ensure that the patient has sufficient oxygen supply and improve the state of hypoxia.

[0003] Artificial resuscitators have the advantages of simple structure, quick and easy operation, and portability. They primarily consist of an elastic breathing bag, a respirator, a breathing valve, an air reservoir bag, a mask or endotracheal tube interface, and an oxygen interface. Oxygen enters the spherical air bag and air reservoir bag. Manual pressure on the air bag opens the front valve, forcing oxygen into the mask or endotracheal tube, which is placed against the patient's mouth and nose, achieving artificial ventilation.

[0004] Since the manual resuscitator requires the operator to manually press the air bag to achieve air supply, it cannot effectively control the ventilation volume. Even if it is operated by professionally trained medical staff, it is difficult to control the appropriate ventilation volume for a long time.

[0005] Therefore, it is necessary to provide a ventilation method with controllable ventilation volume and an artificial resuscitator device to at least partially solve the problems existing in the prior art.

[0006] Summary of the Invention

[0007] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0008] To at least partially address the above-mentioned problems, the present invention provides an artificial resuscitator device, comprising: an air-controlled valve and a flow sensor arranged on an outlet pipe of a ventilator; a connecting pipe bypassing the outlet pipe, the connecting pipe being provided with a three-way valve for selectively connecting the connecting pipe with a control side of the air-controlled valve, and a pressure relief port being provided on one side of the three-way valve for selectively connecting with the control side of the air-controlled valve; a control module for obtaining a current ventilation volume of the ventilator based on a gas flow detected by the flow sensor, and controlling whether the three-way valve switches the air path based on the current ventilation volume, so as to open or close the outlet pipe through the air-controlled valve.

[0009] Preferably, the control module controls whether the three-way valve switches the air path based on comparing the current ventilation volume of the ventilator with the set ventilation volume. If the current ventilation volume of the ventilator reaches the set ventilation volume, the three-way valve is controlled to switch to the locked air path, so that the outlet pipe is connected to the connecting pipe, and the control side of the air control valve is subjected to force, so that the outlet pipe is in a closed state; if the current ventilation volume of the ventilator does not reach the set ventilation volume, the three-way valve is controlled to maintain the current pressure relief air path, so that the connecting pipe is connected to the pressure relief port, and the control side of the air control valve is not subjected to force, so that the outlet pipe is in an open state.

[0010] Preferably, the respirator comprises an air storage bag, an air inlet end of which is provided with an inlet one-way valve, and an air outlet end of which is connected to the air outlet pipe is provided with an outlet one-way valve.

[0011] Preferably, it also includes: a frequency dynamic indication module, which is used to prompt the operator to perform ventilation operations according to the set breathing time interval of the set frequency, and at the same time, the three-way valve is controlled by the control module to switch to the pressure relief air path; after the ventilation is completed, that is, when the ventilation volume of the ventilator reaches the set ventilation volume and has not reached the next ventilation time node, the three-way valve is controlled by the control module to switch to the locked air path.

[0012] Preferably, the air outlet pipe includes: a first pipe section connected to the air outlet end of the air storage bag and a second pipe section connected to the air guide part; the air control valve is arranged at the connection point between the first pipe section and the second pipe section, the connecting pipe bypasses the first pipe section, and the flow sensor is arranged on the second pipe section.

[0013] Preferably, the end of the first pipe section communicating with the second pipe section is arranged inside the second pipe section to form an annular communicating section, and the air control valve is arranged at the end of the second pipe section close to the annular communicating section;

[0014] The air-controlled valve includes: a pressure chamber connected to the second pipe section at one end and to the connecting pipe at the other end, the three-way valve is arranged at the connection between the connecting pipe and the pressure chamber, and the pressure relief port is selectively connected to the pressure chamber through the three-way valve; a diaphragm assembly A is arranged at the connection between the second pipe section and the pressure chamber, and the diaphragm assembly A can selectively seal the port of the first pipe section located in the second pipe section; the side of the diaphragm assembly A close to the pressure chamber is the control side, and the side close to the annular connecting section is the ventilation side, and the area of ​​the control side of the diaphragm assembly A subjected to gas pressure is larger than the area of ​​the ventilation side subjected to gas pressure.

[0015] Preferably, the air-controlled valve adopts a diaphragm valve, comprising: a valve seat for connecting the first pipe section and the second pipe section, a valve cavity is provided in the valve seat, and a partition provided in the valve cavity divides the valve cavity into two connecting cavities; a valve cover is provided on one side of the valve seat, a diaphragm assembly B is provided in the valve cover, and the diaphragm assembly B is used to selectively seal the connecting cavity connected to the first pipe section; the side of the valve cover away from the valve seat is connected to the connecting pipe through the pressure pipe, the three-way valve is provided at the connection between the connecting pipe and the pressure pipe, and the pressure relief port is selectively connected to the pressure pipe through the three-way valve; the side of the diaphragm assembly B close to the pressure pipe is the control side, and the side close to the connecting cavity is the ventilation side.

[0016] Preferably, the diaphragm assembly A comprises: a diaphragm body, both sides of the outer ring region of which are connected to the connection between the second pipe section and the pressure chamber through a first fixing ring and a second fixing ring.

[0017] Preferably, a plurality of first grooves are evenly arranged on a side of the first fixing ring close to the diaphragm body, and a plurality of second grooves are evenly arranged on a side of the second fixing ring close to the diaphragm body, wherein a first pressure sensor in contact with the diaphragm body is provided in the first groove, and a second pressure sensor in contact with the diaphragm body is provided in the second groove;

[0018] The first pressure sensor and the second pressure sensor are both connected to the control module and are used to sense the force conditions on the ventilation side and the control side to determine whether the diaphragm body is working normally.

[0019] A ventilation method for a manual resuscitator device with controllable ventilation volume, comprising:

[0020] According to the respiratory frequency and single ventilation volume required by the user, the set frequency and set ventilation volume are obtained;

[0021] Control the air outlet pipe of the respirator to be in an open state, and obtain the set breathing time interval according to the set frequency;

[0022] Obtain the gas flow at the outlet pipe in real time, obtain the current ventilation volume of the respirator, and determine whether the current ventilation volume of the respirator reaches the set ventilation volume;

[0023] If the current ventilation volume of the respirator does not reach the set ventilation volume, the outlet pipe of the respirator is controlled to remain in an open state; if the current ventilation volume of the respirator reaches the set ventilation volume, the outlet pipe of the respirator is controlled to be closed, and the ventilation time interval is monitored in real time;

[0024] If the ventilation time interval does not reach the set breathing time interval, the air outlet pipe of the control respirator remains closed; if the ventilation time interval reaches the set breathing time interval, the air outlet pipe of the control respirator is opened and the operator is prompted to perform the next ventilation operation.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] The ventilation method with controllable ventilation volume and the artificial resuscitator device described in the present invention form an on-off valve for controlling the opening or closing of the tracheal outlet pipe through an air-controlled valve and a three-way valve. Compared with an on-off valve with large flow and high power consumption, the present invention uses a low-power and small-aperture three-way valve. The control module can indirectly control the opening and closing of the air-controlled valve by controlling the three-way valve, thereby realizing the control of the opening or closing of the tracheal outlet pipe; this not only reduces the power consumption of the artificial resuscitator device, but also can effectively feedback the action of manually operating the ventilator, cut off the ventilation volume that exceeds the required tidal volume, so as to realize the function of quantitative ventilation, and the device is compact and portable, retaining the original advantages of traditional artificial resuscitators.

[0027] The ventilation method with controllable ventilation volume and the artificial resuscitator device described in the present invention, and other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] FIG1 is a control block diagram of the artificial resuscitator device according to the present invention;

[0030] FIG2 is a schematic diagram of the gas circuit principle of the artificial resuscitator device according to the present invention;

[0031] 3 is a schematic diagram of a first structure of the air-controlled valve when the three-way valve in the artificial resuscitator device of the present invention is switched to a pressure relief air path;

[0032] 4 is a schematic diagram of a first structure of the air-controlled valve when the three-way valve in the artificial resuscitator device of the present invention is switched to lock the air path;

[0033] FIG5 is a schematic diagram showing the pressure on the ventilation side and the control side of the diaphragm assembly A when the three-way valve in the artificial resuscitator device of the present invention is switched to lock the air path;

[0034] FIG6 is a schematic diagram of a second structure of the air-controlled valve in the artificial resuscitator device according to the present invention;

[0035] FIG7 is a schematic structural diagram of the diaphragm assembly A in the artificial resuscitator device of the present invention;

[0036] FIG8 is a flow chart of a ventilation method for controlling ventilation volume of the artificial resuscitator device according to the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0038] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0039] As shown in Figures 1 and 2, the present invention provides an artificial resuscitator device, comprising: an air-controlled valve 6 and a flow sensor 7 arranged on an outlet pipe 11 of a ventilator 5; a connecting pipe 12 is bypassed on the outlet pipe 11, and a three-way valve 9 is provided on the connecting pipe 12 so as to selectively connect it with the control side of the air-controlled valve 6, and a pressure relief port 10 is provided on one side of the three-way valve 9 so as to selectively connect it with the control side of the air-controlled valve 6; a control module is used to obtain the current ventilation volume of the ventilator 5 based on the gas flow detected by the flow sensor 7, and to control whether the three-way valve 9 switches the air path based on the current ventilation volume, so as to open or close the outlet pipe 11 through the air-controlled valve 6.

[0040] The ventilation volume here refers to the single ventilation volume of the ventilator 5, and the tidal volume refers to the amount of gas inhaled or exhaled each time during quiet breathing. It is related to age, gender, body surface area, breathing habits, and body metabolism. The set ventilation volume should match the patient's tidal volume;

[0041] When the ventilator 5 is manually operated, the three-way valve 9 switches to the pressure relief gas path, causing the control side of the air control valve 6 to relieve pressure without being subjected to force, and the air outlet pipe 11 is then in an open state. The flow sensor 7 can detect the gas flow rate each time the ventilator 5 ventilates the patient. The control module can receive the flow signal detected by the flow sensor 7 in real time, thereby obtaining the current ventilation volume of the ventilator 5. When the ventilation volume meets the tidal volume required by the patient, the three-way valve 9 is controlled to switch to the locking gas path, causing the control side of the control valve 6 to increase pressure and be subjected to force, and the air outlet pipe is then closed, thereby achieving a quantitative ventilation volume provided to the patient each time.

[0042] The above-mentioned air-controlled valve 6 and three-way valve 9 form a switch valve for controlling the opening or closing of the air outlet pipe 11. In order to ensure a larger ventilation flow rate, the traditional switch valve also consumes a lot of power and cannot meet the demand for portability. The three-way valve 9 of the present invention uses a low-power and small-aperture three-way valve. The control module can indirectly control the opening and closing of the air-controlled valve 6 by controlling the three-way valve 9, thereby realizing the control of the opening or closing of the air outlet pipe 11; this not only reduces the power consumption of the artificial resuscitator device, but also can effectively feedback the action of the manually operated ventilator 5, cut off the ventilation volume that exceeds the required tidal volume, so as to realize the function of quantitative ventilation, and the device is compact and portable, retaining the original advantages of the traditional artificial resuscitator.

[0043] In one embodiment, the control module controls whether the three-way valve 9 switches the air path based on comparing the current ventilation volume of the ventilator 5 with the set ventilation volume. If the current ventilation volume of the ventilator 5 reaches the set ventilation volume, the three-way valve 9 is controlled to switch to the locked air path, so that the outlet pipe 11 is connected to the connecting pipe 12, and the control side of the air control valve 6 is subjected to force, so that the outlet pipe 11 is in a closed state; if the current ventilation volume of the ventilator 5 does not reach the set ventilation volume, the three-way valve 9 is controlled to maintain the current pressure relief air path, so that the connecting pipe 12 is connected to the pressure relief port 10, and the control side of the air control valve 6 is not subjected to force, so that the outlet pipe 11 is in an open state.

[0044] The set ventilation volume is the tidal volume required by the patient. The gas flow of the trachea 11 is monitored in real time by the flow sensor 7 to obtain the ventilation volume of the ventilator 5 at the current moment, which is then compared with the set ventilation volume to control the switching of the air path by the three-way valve 9, ensuring that the single ventilation volume meets the tidal volume required by the patient. At the same time, it can prevent the ventilation volume from being too high and causing damage to the patient, thereby realizing the function of quantitative ventilation.

[0045] In one embodiment, the respirator 5 includes an air storage bag 3 , an inlet one-way valve 2 is provided at the air inlet end thereof, and an outlet one-way valve 4 is provided at the air outlet end thereof connected to the air outlet pipe 11 .

[0046] The air storage bag 3 can be pressed by the operator to provide the patient with the required oxygen or air. The inlet one-way valve 2 allows gas to enter the air storage bag 3 only from the air inlet end, and the outlet one-way valve 4 allows the gas in the air storage bag 3 to be discharged only from the air outlet end into the air outlet pipe 11.

[0047] In one embodiment, it also includes: a frequency dynamic indication module, which is used to prompt the operator to perform ventilation operations according to the set breathing time interval of the set frequency. At the same time, the three-way valve 9 is controlled by the control module to switch to the pressure relief air path; after the ventilation is completed, that is, the ventilation volume of the ventilator 5 reaches the set ventilation volume and has not reached the next ventilation time node, the three-way valve 9 is controlled by the control module to switch to the locking air path.

[0048] In order to provide the patient with a more accurate ventilation frequency, the ventilation frequency of the artificial resuscitator device, i.e., the set frequency, can be set according to the patient's respiratory frequency requirements; specifically, based on the time interval of inhalation at the set frequency, the operator is reminded to perform ventilation operations (pressing the air reservoir 3); assuming that the respiratory frequency per minute is set to 20 times / minute (set frequency), and a breath is taken every 3 seconds, the breathing time interval is set to 3 seconds, and a reminder is given every 3 seconds. The operator can press the air reservoir 3 according to the prompt, and the prompt can be through a screen display or an audio and visual reminder.

[0049] In addition, the frequency dynamic indication module is electrically connected to the control module. When the current ventilation volume of the ventilator 5 reaches the set ventilation volume and has not yet reached the next ventilation time node (the ventilation time interval has not reached the preset ventilation time interval and no ventilation operation is prompted), the three-way valve 9 is kept in a locked air path, which can prevent the air storage bag 3 from being accidentally pressed and causing excessive ventilation to the patient, thereby ensuring safety of use.

[0050] In one embodiment, the air outlet pipe 11 includes: a first pipe section 111 connected to the air outlet end of the air storage bag 3 and a second pipe section 112 connected to the air guide part 8; the air control valve 6 is arranged at the connection point between the first pipe section 111 and the second pipe section 112, the connecting pipe 12 bypasses the first pipe section 111, and the flow sensor 7 is arranged on the second pipe section 112.

[0051] The air guide portion 8 is a mask or endotracheal tube for use by the patient, which facilitates ventilation to the patient.

[0052] Furthermore, two structural forms of the air control valve 6 are provided below:

[0053] FIG3 and FIG4 show a first structure of the air-controlled valve 6. One end of the first pipe section 111 communicating with the second pipe section 112 is disposed inside the second pipe section 112 to form an annular communicating section 113. The air-controlled valve 6 is disposed at an end of the second pipe section 112 close to the annular communicating section 113.

[0054] The air-controlled valve 6 includes: a pressure chamber 610 connected to the second pipe section 112 at one end and to the connecting pipe 12 at the other end, the three-way valve 9 is arranged at the connection between the connecting pipe 12 and the pressure chamber 610, and the pressure relief port 10 is selectively connected to the pressure chamber 610 through the three-way valve 9; a diaphragm assembly A620 is arranged at the connection between the second pipe section 112 and the pressure chamber 610, and the diaphragm assembly A620 can selectively seal the port of the first pipe section 111 located in the second pipe section 112; the side of the diaphragm assembly A620 close to the pressure chamber 610 is the control side, and the side close to the annular connecting section 113 is the ventilation side, and the area of ​​the control side of the diaphragm assembly A620 subjected to gas pressure is larger than the area of ​​the ventilation side subjected to gas pressure.

[0055] As shown in FIG3 , when ventilation is required for the patient, the control module controls the three-way valve 9 to switch to the pressure relief gas path, and the connecting pipe 12 is disconnected from the control side of the air control valve 6, and the pressure relief port 10 is connected to the control side of the air control valve 6, so that the gas in the pressure chamber 610 can be discharged from the pressure relief port 10, and the pressure is released. The gas discharged from the first pipe section 111 forms a force on the diaphragm of the diaphragm assembly A620, so that the force on the ventilation side of the diaphragm assembly A620 is greater than the force on the control side, and the diaphragm of the diaphragm assembly A620 is deformed toward the control side, so that the first pipe section 111 and the annular connecting section 113 are connected to each other, and the switch valve is opened, so that the air outlet pipe 11 is in an open state;

[0056] As shown in Figure 4, when there is no need to ventilate the patient, the control module controls the three-way valve 9 to switch to a locked air circuit, and the connecting pipe 12 is connected to the control side of the air control valve 6, and the first pipe section 111 is connected to the pressure chamber 610, so that the air circuits on the ventilation side and the control side of the diaphragm assembly A620 are connected, and the pressure on both sides of the diaphragm of the diaphragm assembly A620 is consistent. Since the diaphragm assembly A620 is set so that the pressure area of ​​the control side is larger than the pressure area of ​​the ventilation side, the force on the control side is greater than the force on the ventilation side. At this time, the diaphragm of the diaphragm assembly A620 is deformed toward the ventilation side, sealing the end of the first pipe section 111, so that the first pipe section 111 is not connected to the annular connecting section 113, and the switch valve is closed, so that the outlet pipe 11 is in a closed state.

[0057] As shown in Figure 5, it is a schematic diagram of the pressure on the diaphragm assembly A620 on the ventilation side and the control side when the three-way valve 9 is switched to the locking air path. The thick black line on the right side of the figure is the pressure on the control side, and the thick black line on the left side of the figure is the pressure on the ventilation side. The pressure area on the ventilation side is smaller than the pressure area on the control side.

[0058] Through the above structure, a low-power, small-aperture three-way valve 9 can be used in conjunction with the diaphragm assembly A620 to realize the opening or closing of the switch valve, and the diaphragm assembly A620 does not require electric control. By changing the air path of the three-way valve 9, the force on the ventilation side and the control side of the diaphragm assembly A620 can be changed to realize the function of the switch valve. Compared with the use of a high-power switch valve, the electric control power consumption is reduced, and while achieving quantitative ventilation, the portability of the artificial resuscitator is retained.

[0059] As shown in Figure 6, the second structure of the air-controlled valve 6 is a diaphragm valve, including: a valve seat 630 for connecting the first pipe section 111 and the second pipe section 112, a valve cavity is provided in the valve seat 630, and a partition provided in the valve cavity divides the valve cavity into two connecting cavities 640; a valve cover 660 is provided on one side of the valve seat 630, a diaphragm assembly B650 is provided in the valve cover 660, and the diaphragm assembly B650 is used to selectively seal the connecting cavity 640 connected to the first pipe section 111; the side of the valve cover 660 away from the valve seat 630 is connected to the connecting pipe 12 through the pressure pipe 670, the three-way valve 9 is provided at the connection between the connecting pipe 12 and the pressure pipe 670, and the pressure relief port 10 is selectively connected to the pressure pipe 670 through the three-way valve 9; the side of the diaphragm assembly B650 close to the pressure pipe 670 is the control side, and the side close to the connecting cavity 640 is the ventilation side.

[0060] The valve cover 660 seals one side of the valve cavity. The diaphragm assembly B650 is sealed and connected to the valve cover 660. The side of the diaphragm assembly B650 away from the communication cavity 640 forms the control side with the valve cover 660, and the side close to the communication cavity 640 forms the ventilation side.

[0061] When ventilation to the patient is required, the control module controls the three-way valve 9 to switch to the pressure relief gas path, disconnecting the connecting pipe 12 from the pressure pipe 670, and connecting the pressure pipe 670 to the pressure relief port 10, so that the pressure on the control side can be released. The gas in the first pipe section 111 enters the communicating cavity 640 connected thereto, thereby exerting pressure on the ventilation side of the diaphragm assembly B650, causing the diaphragm of the diaphragm assembly B650 to deform and move toward the control side, thereby connecting the two communicating cavities 640, thereby opening the switch valve and putting the outlet pipe 11 in an open state.

[0062] When there is no need to ventilate the patient, the control module controls the three-way valve 9 to switch to locking the air path, the pressure tube 670 is disconnected from the pressure relief port 10, the connecting tube 12 is connected to the pressure tube 670, and the communicating cavity 640 connected to the first pipe section 111 is connected to the pressure tube 670, so that the pressure (air pressure) on the ventilation side and the control side of the diaphragm assembly B650 is consistent. When the diaphragm assembly B650 is set to have the same air pressure on both sides (the same principle as the diaphragm assembly A620) or the air pressure on the control side is greater than the air pressure on the ventilation side, the diaphragm of the diaphragm assembly B650 will deform and move toward the ventilation side, sealing the communicating cavity 640, so that the first pipe section 111 and the second pipe section 112 are disconnected, and the switch valve is closed, and the air outlet pipe is in a closed state;

[0063] In order to ensure the sealing of the diaphragm assembly B650 to the connecting cavity 640, an elastic part that can assist the diaphragm of the diaphragm assembly B650 to move toward the ventilation side can be selectively provided on the control side. Then, the combined force of the gas pressure and the elastic part on the control side will be greater than the gas pressure on the ventilation side, thereby sealing the connecting cavity 640. The elastic force of the elastic part is relatively small, and under its single action, the diaphragm of the diaphragm assembly B650 will not be deformed or moved.

[0064] Through the above structure, a low-power, small-aperture three-way valve 9 can be used in conjunction with the diaphragm assembly A620 to realize the opening or closing of the switch valve, thereby achieving quantitative ventilation while retaining the portability of the artificial resuscitator.

[0065] As shown in FIG. 7 , in one embodiment, the diaphragm assembly A620 includes a diaphragm body 621 , both sides of the outer ring region of which are connected to the connection between the second pipe section 112 and the pressure chamber 610 via a first fixing ring 622 and a second fixing ring 623 .

[0066] The outer ring area of ​​the diaphragm body 621 is compressed between the first fixing ring 622 and the second fixing ring 623 . The first fixing ring 622 and the second fixing ring 623 are sealed and connected to the second pipe section 112 or the pressure chamber 610 to fix the diaphragm body 621 .

[0067] In addition, the structure of the diaphragm assembly B650 can be set to include: a mounting shell sealed with the valve cover 660, with both sides of the mounting shell being through-set; a diaphragm body 621, with both sides of its outer ring area connected to the mounting shell via a first fixing ring 622 and a second fixing ring 623.

[0068] Furthermore, a plurality of first grooves are evenly arranged on a side of the first fixing ring 622 close to the diaphragm body 621, and a plurality of second grooves are evenly arranged on a side of the second fixing ring 623 close to the diaphragm body 621. A first pressure sensor 624 in contact with the diaphragm body 621 is provided in the first groove, and a second pressure sensor 625 in contact with the diaphragm body 621 is provided in the second groove.

[0069] The first pressure sensor 624 and the second pressure sensor 625 are both connected to the control module and are used to sense the force conditions on the ventilation side and the control side to determine whether the diaphragm body 621 is working normally.

[0070] The first pressure sensor 624 is arranged on the ventilation side, and the second pressure sensor 625 is arranged on the control side. If the force on the ventilation side is greater than the force on the control side, the diaphragm body 621 moves and deforms toward the control side, which forms an squeezing effect on the second pressure sensor 625, thereby changing the pressure value detected by the second pressure sensor 625; if the force on the control side is greater than the force on the ventilation side, the diaphragm body 621 moves and deforms toward the ventilation side, thereby forming an squeezing effect on the first pressure sensor 624, thereby changing the pressure value detected by the first pressure sensor 624.

[0071] When the switch valve is operating normally and the diaphragm body 621 is moving and deforming, the maximum pressure value detected by the first pressure sensor 624 and the second pressure sensor 625 (the maximum air pressure instantaneously generated on the control side or the ventilation side when the air reservoir 3 is manually pressed) should be greater than a preset pressure value, which is the pressure value that can cause the diaphragm body 621 to deform.

[0072] The diaphragm body 621 moves and deforms when the air path of the three-way valve 9 is switched. Therefore, it can be set that each time the air path of the three-way valve 9 is switched, the maximum pressure value detected by the first pressure sensor 624 and the second pressure sensor 625 is obtained through the detection module, and the maximum pressure value is compared with the preset pressure value. If the maximum pressure value is less than the preset pressure value, an alarm prompt is issued, indicating that the diaphragm body 621 is damaged, or there is a leak on at least one side of the ventilation side and the control side, and further use should be stopped to prevent improper ventilation of the patient and damage to the patient; or in a critical situation, the ventilation volume is displayed on the display screen of the artificial resuscitator device. When the diaphragm body 621 works abnormally but can ventilate, the pressing ventilation and ventilation cut-off operations of the air storage bag 3 are manually controlled by observing the displayed ventilation volume.

[0073] In addition, before using this artificial resuscitator device each time, you can first test it (the air guide part 8 does not contact the patient) by manually pressing the air storage bag 3 to see whether it issues an alarm. If an alarm is issued, it indicates that the artificial resuscitator device is working abnormally. If no alarm is issued, it can be used normally.

[0074] A ventilation method for a manual resuscitator device with controllable ventilation volume, comprising:

[0075] According to the respiratory frequency and single ventilation volume required by the user, the set frequency and set ventilation volume are obtained;

[0076] Control the outlet pipe 11 of the respirator 5 to be in an open state, and obtain a set breathing time interval according to the set frequency;

[0077] Obtain the gas flow at the outlet pipe 11 in real time, obtain the current ventilation volume of the respirator 5, and determine whether the current ventilation volume of the respirator 5 reaches the set ventilation volume;

[0078] If the current ventilation volume of the ventilator 5 does not reach the set ventilation volume, the outlet pipe 11 of the ventilator 5 is controlled to remain in an open state; if the current ventilation volume of the ventilator 5 reaches the set ventilation volume, the outlet pipe 11 of the ventilator 5 is controlled to be closed, and the ventilation time interval is monitored in real time;

[0079] If the ventilation time interval does not reach the set breathing time interval, the air outlet pipe 11 of the control respirator 5 remains in a closed state; if the ventilation time interval reaches the set breathing time interval, the air outlet pipe 11 of the control respirator 5 is opened and the operator is prompted to perform the next ventilation operation.

[0080] The above method can assist in controlling the frequency, reminding the operator to perform ventilation operations through prompts, ensuring that the frequency of ventilation to the patient is more consistent with the patient's respiratory rate; and controlling the opening of the outlet tube 11 according to the set time interval of the set frequency, and keeping the outlet tube 11 closed at other inappropriate time points, thereby preventing the ventilator 5 from being misoperated and causing inappropriate ventilation to the patient, thereby ensuring safety of use.

[0081] By real-time monitoring of the gas flow at the ventilator 11 and integrating the time, the single ventilation volume of the ventilator 5 can be obtained. When the set ventilation volume is reached, the ventilation is cut off and the ventilator 11 is closed to achieve quantitative ventilation, ensuring the ventilation volume while preventing overventilation and ensuring the safety of ventilation for the patient.

[0082] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0083] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0084] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An artificial resuscitator device, characterized in that: include: An air control valve (6) and a flow sensor (7) are arranged on an outlet pipe (11) of a respirator (5); a connecting pipe (12) is bypassed on the outlet pipe (11), a three-way valve (9) is arranged on the connecting pipe (12) so as to selectively connect the connecting pipe (12) with the control side of the air control valve (6), and a pressure relief port (10) is arranged on one side of the three-way valve (9) so as to selectively connect the connecting pipe (12) with the control side of the air control valve (6); a control module is used to obtain the current ventilation volume of the respirator (5) according to the gas flow detected by the flow sensor (7), and to control whether the three-way valve (9) switches the air path according to the current ventilation volume, so as to open or close the outlet pipe (11) through the air control valve (6); The respirator (5) comprises: an air storage bag (3), an inlet check valve (2) being provided at the air inlet end thereof, and an outlet check valve (4) being provided at the air outlet end thereof connected to the air outlet pipe (11); The air outlet pipe (11) comprises: a first pipe section (111) connected to the air outlet end of the air storage bag (3) and a second pipe section (112) connected to the air guide portion (8); the air control valve (6) is arranged at the connection point between the first pipe section (111) and the second pipe section (112), the connecting pipe (12) bypasses the first pipe section (111), and the flow sensor (7) is arranged on the second pipe section (112).

2. The artificial resuscitator device according to claim 1, characterized in that: The control module controls whether the three-way valve (9) switches the air circuit based on the comparison of the current ventilation volume of the respirator (5) obtained with the set ventilation volume. If the current ventilation volume of the respirator (5) reaches the set ventilation volume, the three-way valve (9) is controlled to switch to the locked air circuit, so that the outlet pipe (11) is connected to the connecting pipe (12), and the control side of the air control valve (6) is subjected to force so that the outlet pipe (11) is in a closed state; if the current ventilation volume of the respirator (5) does not reach the set ventilation volume, the three-way valve (9) is controlled to maintain the current pressure relief air circuit, so that the connecting pipe (12) is connected to the pressure relief port (10), and the control side of the air control valve (6) is not subjected to force so that the outlet pipe (11) is in an open state.

3. The artificial resuscitator device according to claim 1, characterized in that: Also includes: The frequency dynamic indication module is used to prompt the operator to perform ventilation operation according to the set breathing time interval of the set frequency, and at the same time, the three-way valve (9) is controlled by the control module to switch to the pressure relief gas path; after the ventilation is completed and before the next ventilation time node is reached, the three-way valve (9) is controlled by the control module to switch to the locking gas path.

4. The artificial resuscitator device according to claim 1, characterized in that: One end of the first pipe section (111) communicating with the second pipe section (112) is arranged inside the second pipe section (112) to form an annular communicating section (113), and the air control valve (6) is arranged at an end of the second pipe section (112) close to the annular communicating section (113); The air-controlled valve (6) comprises: a pressure chamber (610) connected to the second pipe section (112) at one end and connected to the connecting pipe (12) at the other end; the three-way valve (9) is arranged at the connection between the connecting pipe (12) and the pressure chamber (610); the pressure relief port (10) is selectively connected to the pressure chamber (610) through the three-way valve (9); a diaphragm assembly A (620) is arranged at the connection between the second pipe section (112) and the pressure chamber (610); the diaphragm assembly A (620) is capable of selectively sealing the port of the first pipe section (111) located in the second pipe section (112); the diaphragm assembly A (620) is close to the pressure chamber One side of (610) is the control side, and the side close to the annular connecting section (113) is the ventilation side. The area of ​​the control side of the diaphragm assembly A (620) subjected to gas pressure is larger than the area of ​​the ventilation side subjected to gas pressure.

5. The artificial resuscitator device according to claim 1, characterized in that: The air-controlled valve (6) comprises: a valve seat (630) for connecting a first pipe section (111) and a second pipe section (112), wherein a valve cavity is arranged in the valve seat (630), and a partition arranged in the valve cavity divides the valve cavity into two communicating cavities (640); a valve cover (660) arranged on one side of the valve seat (630), wherein a diaphragm assembly B (650) is arranged in the valve cover (660), and wherein the diaphragm assembly B (650) is used to selectively seal a connecting cavity (640) communicating with the first pipe section (111). The valve cover (660) is connected to the connecting pipe (12) via a pressure pipe (670) on one side away from the valve seat (630); the three-way valve (9) is arranged at the connection between the connecting pipe (12) and the pressure pipe (670); the pressure relief port (10) is selectively connected to the pressure pipe (670) via the three-way valve (9); the side of the diaphragm assembly B (650) close to the pressure pipe (670) is the control side, and the side close to the connecting chamber (640) is the ventilation side.

6. The artificial resuscitator device according to claim 4, characterized in that: The diaphragm assembly A (620) comprises: a diaphragm body (621), both sides of the outer ring region of which are connected to the connection between the second pipe section (112) and the pressure chamber (610) through a first fixing ring (622) and a second fixing ring (623).

7. The artificial resuscitator device according to claim 6, characterized in that: A plurality of first grooves are evenly arranged on one side of the first fixing ring (622) close to the diaphragm body (621), and a plurality of second grooves are evenly arranged on one side of the second fixing ring (623) close to the diaphragm body (621), a first pressure sensor (624) in contact with the diaphragm body (621) is arranged in the first groove, and a second pressure sensor (625) in contact with the diaphragm body (621) is arranged in the second groove; The first pressure sensor (624) and the second pressure sensor (625) are both connected to the control module and are used to sense the force conditions on the ventilation side and the control side to determine whether the diaphragm body (621) is working normally.

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