Auxiliary mechanical ventilation device triggered by spontaneous respiration negative pressure

Abstract

The invention relates to the technical field of assisted respiration, in particular to an auxiliary mechanical ventilation device triggered by spontaneous respiration negative pressure, which comprises a stagnation-containing shell, a ventilation device, a ventilation device, a ventilation device and a ventilation device, and is characterized in that a connector is arranged at one end of the stagnation-containing shell, and the other end of the stagnation-containing shell is communicated with the outside; the measuring mechanism comprises a follow-up assembly and a plugging assembly, the plugging assembly can change the conduction state of the connector, and the plugging assembly is matched with the follow-up assembly and can make the follow-up assembly act when the patient breathes; the pump pressure assembly comprises a power structure and a transmission structure, a plurality of sets of deflection pieces arranged in an inclined mode are installed on the power structure in a circumferential rotation mode, and when the follow-up assembly acts, the transmission structure can drive the deflection pieces to deflect so as to change the gas flowing direction; and the balance weight part is provided with a second locking part coaxial with the balance weight part, the second locking part is matched with the first locking part connected with the transmission assembly, and when the patient blows air, the deflection piece can rotate along with the balance weight part so that air in the containing shell can be emptied.

Description

Technical Field

[0001] This invention relates to the field of assisted breathing technology, specifically an assisted mechanical ventilation device triggered by negative pressure from spontaneous breathing. Background Technology

[0002] Mechanical ventilation is a treatment or method that uses the mechanical force of an artificial device to force air, oxygen, or an air-oxygen mixture into the lungs, generating or assisting the patient's breathing movements, causing intermittent lung expansion, and thereby enhancing and improving respiratory function and reducing or correcting O2 deficiency and CO2 retention. In clinical applications, ventilators replace and improve external respiration.

[0003] A ventilator uses a series of mechanical devices to process air or oxygen-containing gas into the pressure, flow rate, and volume required for spontaneous breathing, delivering it to the patient in a timely manner to induce conditioned reflex breathing. Through a control / monitoring system, the ventilator controls and monitors the patient's breathing, resulting in a better recovery effect.

[0004] However, during the use of a ventilator, some of the air exhaled by the patient remains inside the ventilator. This causes the patient to inhale this air during their next inhalation. This air has a high CO2 content, which can cause discomfort and shortness of breath, hindering the patient's recovery. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary mechanical ventilation device triggered by negative pressure of spontaneous breathing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing, comprising:

[0008] A hysteresis housing, one end of which is provided with a connector, and the other end is connected to the outside.

[0009] The measuring mechanism is disposed within the hysteresis housing. The measuring mechanism includes a follower component and a blocking component. The blocking component can change the conduction state of the connector, and the blocking component cooperates with the follower component to make the follower component move when the patient breathes.

[0010] A pump pressure assembly is connected to the measuring mechanism. The pump pressure assembly includes a power structure and a transmission structure. Multiple sets of inclined deflector plates are mounted on the power structure in a circumferential rotation. When the follower assembly is activated, the transmission structure can drive the deflector plates to deflect, thereby changing the gas flow direction.

[0011] A counterweight is rotatably mounted inside the hysteresis housing. A second locking element is provided on the counterweight and is coaxial with it. The second locking element cooperates with the first locking element connected to the transmission assembly, so that the deflection plate can rotate with the counterweight when the patient blows air.

[0012] As a further aspect of the present invention: the follower component includes a connecting cylinder body communicating with the connector head, a sealing plug is slidably disposed inside the connecting cylinder body, a connecting shaft is disposed on the sealing plug and passing through the connecting cylinder body, a side plate is fixed at one end of the connecting shaft away from the sealing plug, a first slider is slidably disposed on the side plate, and the first slider is connected to an energy storage structure disposed on the side plate.

[0013] The follower assembly also includes a guide plate connected to the connecting cylinder and a follower rod connected to the first slider. A first pulley located at the end of the follower rod away from the first slider can roll within the guide plate.

[0014] As a further embodiment of the present invention: the energy storage structure includes a first slide groove arranged along the length direction of the side plate, a first slider slidably disposed in the first slide groove, and the first slider slidably connected to a horizontal shaft disposed in the first slide groove, a first spring sleeved on the horizontal shaft, one end of the first spring being connected to the side wall of the first slide groove, and the other end being connected to the first slider.

[0015] The guide plate is provided with a first inclined groove and a second inclined groove. The first inclined groove and the second inclined groove are connected, and the first pulley can roll within the first inclined groove and the second inclined groove.

[0016] As a further embodiment of the present invention: the sealing assembly includes a rotating shaft rotatably installed in the hysteresis housing and connected to the power structure. A rotating component is fixed at one end of the rotating shaft away from the power structure. Two second sliding grooves are symmetrically arranged on the rotating component. A second slider is slidably installed in the second sliding groove. A steel ball is connected to one side of the second slider.

[0017] The sealing assembly also includes two sealing plates that are symmetrically and slidably disposed on the inner wall of the hysteresis housing. The two sealing plates are connected to an elastic structure disposed on the rotating shaft, and the elastic structure is connected to the other side of the second slider.

[0018] As a further embodiment of the present invention: the elastic structure includes a follower sleeve sleeved on the rotating shaft, the follower sleeve being connected to the second slider via a support rod, and the follower sleeve being fixedly connected to an abutment plate disposed within the rotating shaft, a crossbar being rotatably mounted on the abutment plate, and two traction rods being symmetrically and rotatably mounted on the end of the crossbar away from the abutment plate, the traction rods being rotatably connected to the sealing plate;

[0019] A second spring is also fitted on the rotating shaft. One end of the second spring is connected to the rotating component, and the other end is connected to the follower sleeve.

[0020] As a further embodiment of the present invention: the power structure includes a drive device fixed outside the hysteresis housing, the output shaft of the drive device is connected to a drive shaft rotatably installed inside the hysteresis housing, and the drive shaft is rotatably connected to the deflection plate;

[0021] The drive shaft has a hollow interior, and the rotating shaft can be inserted into the drive shaft. The rotating shaft is provided with a limiting block along its length, and the limiting block slides into a limiting groove provided in the drive shaft.

[0022] As a further embodiment of the present invention: the transmission structure includes a connecting plate fixedly connected to the side plate, the connecting plate having an "L" shape and penetrating the hysteresis housing, and a second pulley is rotatably mounted on the connecting plate;

[0023] The transmission structure also includes a connecting frame coaxially arranged with the drive shaft. The connecting frame is connected to the deflection plate through a connecting kit, and a driven shaft is provided on the connecting frame. The driven shaft is rotatably connected to a horizontal plate arranged in the hysteresis housing. A drive plate is provided on the horizontal plate, and the drive plate is connected to the second pulley.

[0024] The connecting frame is also connected to the first locking component via a connecting plate.

[0025] As a further embodiment of the present invention: a fitting block is provided at the end of the cross plate away from the connecting frame, and the fitting block can slide in a fitting groove formed on the side wall of the hysteresis housing;

[0026] The drive plate is provided with an inclined groove and two horizontal grooves. The two horizontal grooves are respectively connected to the two ends of the inclined groove, and the inclined groove and the two horizontal grooves form a guide groove, in which the second pulley can roll.

[0027] As a further embodiment of the present invention: the connecting kit includes a connector disposed on the side of the deflector plate, the connector having a connecting groove along its length direction, and a No. 3 pulley rotatably mounted on the connecting frame can roll within the connecting groove.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] By using a sealing component and a follow-up component, the connector is sealed by two sealing plates. This creates positive or negative pressure in the connecting cylinder when the patient breathes, which in turn drives the first pulley to quickly switch between the first and second inclined slots via the sealing plug. Based on the position of the first pulley, the patient's inhalation or exhalation can be quickly identified, thereby driving the pump assembly to operate. This reduces the pump assembly's operation delay and improves ventilation efficiency. Furthermore, since different patients have different respiratory rates, this invention allows the pump assembly to be controlled by the patient's breathing, ensuring that the pump assembly's operation frequency matches the patient's breathing. This avoids misalignment between the pump assembly and the patient's breathing, reduces the patient's breathing difficulty, ensures smooth ventilation, and is more conducive to the patient's recovery.

[0030] By using a pump-pressure assembly, the direction of the airflow generated by the deflector can be changed by altering the deflection direction of the deflector during the patient's breathing. The deflection of the deflector is mechanically interlocked with the positive or negative pressure in the connecting cylinder, making adjustment more convenient and increasing the speed of the deflector's deflection direction. This improves the pumping and suction speeds of the deflector, ensuring that the pumping or suction actions are more consistent with the patient's inhalation or exhalation, thus improving ventilation. Compared to existing plunger-type ventilation devices, this device uses pressure for pumping and suction, avoiding damage to the patient's trachea caused by excessive pressure during pumping or suction.

[0031] By incorporating a counterweight, a first locking element, and a second locking element, the deflector plate can continue to rotate for a certain period of time along with the counterweight when the patient blows air. This allows the air exhaled by the patient to be emptied from the connector and the condensation chamber, preventing the accumulation of exhaled air in the connector and condensation chamber during prolonged breathing, which could lead to an increase in carbon dioxide concentration during inhalation, causing shortness of breath and improving the patient's recovery speed. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of one embodiment of an assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing.

[0033] Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle.

[0034] Figure 3 This is a schematic diagram of the internal structure of the hysteresis shell in one embodiment of an assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing.

[0035] Figure 4 for Figure 3 Enlarged view of the structure at point B.

[0036] Figure 5 This is a schematic diagram of the internal structure of the hysteresis shell of an embodiment of an assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing, taken from another angle.

[0037] Figure 6 for Figure 5 Enlarged view of the structure at point C.

[0038] Figure 7 This is a schematic diagram of the follow-up component and transmission structure in one embodiment of an assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing.

[0039] Figure 8 This is a schematic diagram of the power structure and transmission structure in one embodiment of an assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing.

[0040] Figure 9 for Figure 8 Enlarged view of the structure at point D.

[0041] Figure 10 This is a schematic diagram of the occlusion component in one embodiment of an assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing.

[0042] In the diagram: 1. Hysteresis housing; 101. Connector; 102. Fitting groove; 2. Connecting cylinder; 3. Sealing plug; 4. Side plate; 401. No. 1 sliding groove; 5. Horizontal shaft; 6. No. 1 spring; 7. No. 1 slider; 8. Follower rod; 801. No. 1 pulley; 9. Guide plate; 901. No. 1 inclined groove; 902. No. 2 inclined groove; 10. Connecting plate; 11. No. 2 pulley; 12. Drive plate; 1201. Horizontal groove; 1202. Inclined groove; 13. Horizontal plate; 1301. Fitting block; 14. Driven shaft; 15. Connecting frame; 501. No. 3 pulley; 16. Deflector plate; 17. Drive shaft; 18. Drive unit; 19. Connecting part; 1901. Connecting groove; 20. Connecting plate; 21. No. 1 locking part; 22. No. 2 locking part; 23. Counterweight; 24. Rotating shaft; 2401. Limiting block; 25. Follower sleeve; 2501. Abutment plate; 26. Crossbar; 27. Pull rod; 28. Sealing plate; 29. ​​Rotating part; 30. No. 2 slide groove; 31. No. 2 slider; 32. Steel ball; 33. Support rod; 34. No. 2 spring; 35. One-way valve. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0045] Please see Figures 1-10 In this embodiment of the invention, an assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing includes: a hysteresis housing 1, a measuring mechanism, a pump assembly, and a counterweight 23 to assist patient breathing. Under the action of two sealing plates 28, the connector 101 is sealed, allowing positive or negative pressure to be generated within the connecting cylinder 2 during patient breathing. This pressure, through the sealing plug 3, drives the first pulley 801 to rapidly switch between the first inclined groove 901 and the second inclined groove 902. Based on the position of the first pulley 801, the patient's inhalation or exhalation can be quickly identified, thereby driving the pump assembly to operate, reducing the operation delay of the pump assembly, improving ventilation efficiency, and addressing the different respiratory rates of different patients. During use, the pump assembly is controlled by the patient's breathing, ensuring that the pump assembly's operating frequency matches the patient's breathing movements. This prevents misalignment between the pump assembly and the patient's breathing, reduces the difficulty of breathing, ensures smooth ventilation, and is more conducive to the patient's recovery. Simultaneously, when the patient blows air, the deflector 16 continues to rotate with the counterweight 23 for a certain period, thereby purging the air exhaled by the patient from the connector 101 and the condensation housing 1. This prevents the accumulation of exhaled air in the connector 101 and the condensation housing 1 during prolonged breathing, which could lead to an increase in carbon dioxide concentration during inhalation, causing rapid breathing and improving the patient's recovery speed.

[0046] Specifically, one end of the hysteresis housing 1 is provided with a connector 101, and the other end is connected to the outside. A one-way valve 35 is provided on the connector 101.

[0047] The measuring mechanism is disposed within the hysteresis housing 1. The measuring mechanism includes a follower component and a blocking component. The blocking component can change the conduction state of the connector 101. The blocking component cooperates with the follower component to make the follower component move when the patient breathes.

[0048] The follower component includes a connecting cylinder 2 that communicates with the connector 101. A sealing plug 3 is slidably disposed inside the connecting cylinder 2. A connecting shaft that passes through the connecting cylinder 2 is disposed on the sealing plug 3. A side plate 4 is fixed to one end of the connecting shaft away from the sealing plug 3. A first slider 7 is slidably disposed on the side plate 4. The first slider 7 is connected to an energy storage structure disposed on the side plate 4.

[0049] The energy storage structure includes a first slide groove 401 arranged along the length of the side plate 4, a first slider 7 slidably disposed in the first slide groove 401, and the first slider 7 is slidably connected to a horizontal shaft 5 disposed in the first slide groove 401. A first spring 6 is sleeved on the horizontal shaft 5, one end of the first spring 6 is connected to the side wall of the first slide groove 401, and the other end is connected to the first slider 7.

[0050] The follower assembly also includes a guide plate 9 connected to the connecting cylinder 2 and a follower rod 8 connected to the first slider 7. A first pulley 801 located at the end of the follower rod 8 away from the first slider 7 can roll within the guide plate 9. The guide plate 9 is provided with a first inclined groove 901 and a second inclined groove 902. The first inclined groove 901 and the second inclined groove 902 are connected, and the first pulley 801 can roll within the first inclined groove 901 and the second inclined groove 902.

[0051] The sealing assembly includes a rotating shaft 24 rotatably installed inside the hysteresis housing 1 and connected to the power structure. A rotating component 29 is fixed at one end of the rotating shaft 24 away from the power structure. Two second slide grooves 30 are symmetrically arranged on the rotating component 29. A second slider 31 is slidably installed in the second slide groove 30. A steel ball 32 is connected to one side of the second slider 31.

[0052] The sealing assembly further includes two sealing plates 28 symmetrically and slidably disposed on the inner wall of the hysteresis housing 1. The two sealing plates 28 are connected to an elastic structure disposed on the rotating shaft 24. The elastic structure is connected to the other side of the second slider 31. The elastic structure includes a follower sleeve 25 sleeved on the rotating shaft 24. The follower sleeve 25 is connected to the second slider 31 through a support rod 33. The follower sleeve 25 is fixedly connected to an abutment plate 2501 disposed in the rotating shaft 24. A crossbar 26 is rotatably mounted on the abutment plate 2501. Two traction rods 27 are symmetrically and rotatably mounted on the end of the crossbar 26 away from the abutment plate 2501. The traction rods 27 are rotatably connected to the sealing plates 28.

[0053] A second spring 34 is also sleeved on the rotating shaft 24. One end of the second spring 34 is connected to the rotating component 29, and the other end is connected to the follower sleeve 25.

[0054] When in use, connect the tube to the connector 101 and insert the end of the tube away from the connector 101 into the trachea.

[0055] In the initial state, the pump assembly is stationary, and the rotating shaft 24 is also stationary. The second spring 34 is compressed, causing the follower sleeve 25 to move away from the rotating component 29. In this state, the follower sleeve 25, via the support rod 33, positions the two second sliders 31 at the end of the second slide groove 30 near the rotating shaft 24. Simultaneously, the crossbar 26 is inside the rotating shaft 24, and via the pull rod 27, the two sealing plates 28 are in contact, thus sealing the connector 101. Also in this state, the first pulley 801 is at the end of the first inclined groove 901 away from the second inclined groove 902. When the patient blows air, the gas enters the connector 101 through the catheter, increasing the pressure within the connector 101. When the sealing plug 3 moves away from the connector 101 within the connecting cylinder 2, the connector 101 will drive the side plate 4 away from the connecting cylinder 2 via the connecting shaft, and drive the first pulley 801 to make lateral displacement via the first slider 7 and the follower rod 8. When the first pulley 801 makes lateral displacement, the first pulley 801 will move along the length direction of the first inclined groove 901, and drive the first slider 7 to move toward the connecting shaft, thereby compressing the first spring 6. When the first pulley 801 moves to the connection point between the first inclined groove 901 and the second inclined groove 902, the first spring 6 will release elastic potential energy to drive the first pulley 801 to move along the length direction of the second inclined groove 902, and finally move to the end of the second inclined groove 902.

[0056] In detail, when the patient inhales, the pressure inside connector 101 decreases because it is in a blocked state. Under this negative pressure, the sealing plug 3 moves towards connector 101, causing the side plate 4 to move towards connecting cylinder 2, and causing pulley 801 to move from inclined groove 902 towards inclined groove 901. That is, under the action of the two sealing plates 28, connector 101 is blocked, allowing pulley 801 to move rapidly within inclined groove 901 and inclined groove 902 when the patient breathes. The rapid switching mechanism, based on the position of pulley 801, can quickly distinguish between the patient's inhalation and exhalation actions, thereby driving the pump assembly to operate. This reduces the operation delay of the pump assembly, improves ventilation efficiency, and, since different patients have different respiratory rates, the pump assembly is controlled by the patient's active breathing during use. This ensures that the pump assembly's operating frequency matches the patient's breathing action, preventing misalignment between the pump assembly and the patient's breathing, reducing the patient's breathing difficulty, ensuring smooth ventilation, and promoting the patient's recovery.

[0057] Furthermore, a position sensor (not shown in the figure) is provided on the guide plate 9. The position sensor controls the operation of the pump assembly by detecting the position status of the first pulley 801, so as to adjust the start time of the pump assembly in real time and keep it consistent with the start time of the patient's blowing or inhaling, thereby reducing the working delay of the pump assembly and improving the assisted ventilation effect of the pump assembly.

[0058] Furthermore, when the first pulley 801 completes its position switching, the pump assembly will drive the rotating shaft 24 to rotate, and cause the rotating component 29 connected to the rotating shaft 24 to perform circular motion, so that the second slider 31 and the steel ball 32 perform circular motion to generate centrifugal force. Under the action of centrifugal force, the second slider 31 and the steel ball 32 will move away from the rotating shaft 24, and pull the follower sleeve 25 towards the rotating component 29 through the support rod 33, further compressing the second spring 34. At this time, the follower sleeve 25 will drive the crossbar 26 towards the sealing plate 28 through the abutment plate 2501, and drive the two sealing plates 28 away from each other through the two pull rods 27, so that the connector 101 is connected. At this time, the pump assembly can pump or draw air into the connector 101, thereby assisting the patient in breathing.

[0059] With the above configuration, the connector 101 is sealed by the two sealing plates 28, allowing positive or negative pressure to be generated in the connecting cylinder 2 when the patient breathes. This pressure, through the sealing plug 3, drives the first pulley 801 to quickly switch between the first inclined groove 901 and the second inclined groove 902. Based on the position of the first pulley 801, the patient's inhalation or exhalation can be quickly identified, thereby driving the pump assembly to operate, reducing the operation delay of the pump assembly, improving ventilation efficiency, and since different patients have different respiratory rates, this invention allows the pump assembly to be controlled by the patient's breathing, ensuring that the operation frequency of the pump assembly is consistent with the patient's breathing. This avoids misalignment between the pump assembly and the patient's breathing, reduces the difficulty of breathing for the patient, ensures smooth ventilation, and is more conducive to the patient's recovery.

[0060] Please see Figures 3-9 The pump assembly is connected to the rotating shaft 24 and the side plate 4. The pump assembly includes a power structure and a transmission structure. The power structure has multiple sets of inclined deflector plates 16 that are rotatably mounted on it. When the side plate 4 moves, the transmission structure can drive the deflector plates 16 to deflect, thereby changing the gas flow direction. The power structure includes a drive device 18 fixed outside the hysteresis housing 1. The output shaft of the drive device 18 is connected to a drive shaft 17 that is rotatably mounted inside the hysteresis housing 1. The drive shaft 17 is rotatably connected to the deflector plates 16.

[0061] The interior of the drive shaft 17 is hollow, and the rotating shaft 24 can be inserted into the drive shaft 17. The rotating shaft 24 is provided with a limiting block 2401 along its length direction. The limiting block 2401 slides in conjunction with the limiting groove provided in the drive shaft 17.

[0062] The transmission structure includes a connecting plate 10 fixedly connected to the side plate 4. The connecting plate 10 has an "L" shape and penetrates the hysteresis housing 1. A second pulley 11 is rotatably mounted on the connecting plate 10.

[0063] The transmission structure also includes a connecting frame 15 coaxially arranged with the drive shaft 17. The connecting frame 15 is connected to the deflection plate 16 through a connecting kit. The connecting kit includes a connector 19 disposed on the side of the deflection plate 16. The connector 19 is provided with a connecting groove 1901 along its length direction. The No. 3 pulley 1501 rotatably mounted on the connecting frame 15 can roll in the connecting groove 1901.

[0064] A driven shaft 14 is provided on the connecting frame 15. The driven shaft 14 is rotatably connected to a horizontal plate 13 provided in the hysteresis housing 1. A drive plate 12 is provided on the horizontal plate 13. The drive plate 12 is connected to the second pulley 11. An inclined groove 1202 and two horizontal grooves 1201 are provided on the drive plate 12. The two horizontal grooves 1201 are respectively connected to the two ends of the inclined groove 1202. The inclined groove 1202 and the two horizontal grooves 1201 form a guide groove. The second pulley 11 can roll in the guide groove.

[0065] The driven shaft 14 is also provided with a limiting groove that slides with the limiting block 2401;

[0066] A fitting block 1301 is provided at one end of the horizontal plate 13 away from the connecting frame 15. The fitting block 1301 can slide in the fitting groove 102 formed on the side wall of the accommodating housing 1.

[0067] The counterweight 23 is rotatably installed inside the hysteresis housing 1. A second locking member 22 is provided on the counterweight 23 and is coaxial with it. The second locking member 22 cooperates with the first locking member 21 connected to the connecting frame 15 through the connecting plate 20, so that when the patient blows air, the deflector 16 can rotate with the counterweight 23.

[0068] When the patient inhales, pulley 801 is at the end of inclined groove 901. At this time, side plate 4, via connecting plate 10, positions pulley 11 in horizontal groove 1201 near horizontal plate 13. Deflector vanes 16 are tilted towards horizontal plate 13. Simultaneously, the drive device 18 operates, its output shaft rotating the drive shaft 17, causing multiple deflector vanes 16 to rotate in a circular motion, generating airflow towards connector 101. Furthermore, as the drive shaft 17 rotates, it is driven by the limiting block 2401 and limiting groove to rotate the rotating shaft 24, causing the two sealing plates 2... 8. The components are spaced far apart, allowing airflow to enter the patient's trachea through connector 101 and tubing to assist the patient's air intake. When deflector 16 rotates to generate airflow, it will have a reverse deflection effect. At this time, pulley 11 is in the horizontal groove 1201, making the movement trend of pulley 11 perpendicular to the movement trend of cross plate 13. This avoids the angle of deflector 16 changing when it rotates, thus improving the stability of deflector 16 when it rotates to generate airflow, and further improving the stability of airflow into the patient's trachea when the patient inhales.

[0069] When the patient performs the blowing action, pulley 801 will switch from inclined groove 901 to inclined groove 902. At this time, side plate 4 will drive connecting plate 10 to move, causing pulley 11 to move towards the inner wall of condenser housing 1. During this process, pulley 11 will move from horizontal groove 1201 near horizontal plate 13 to inclined groove 1202. While pulley 11 is moving in inclined groove 1202, drive plate 12 will drive horizontal plate 13 to move along the length of fitting groove 102 towards drive device 18 until pulley 11 moves to horizontal groove 1201 away from horizontal plate 13. In this state, when the deflector 16 rotates, it can maintain a stable deflection state. When the horizontal plate 13 moves, the horizontal plate 13 will drive the connecting frame 15 to move, and cause the third pulley 1501 to move towards the drive device 18. The third pulley 1501 is set in the connecting groove 1901, so that when the third pulley 1501 moves towards the drive device 18, it will drive the deflector 16 to deflect in the opposite direction. At this time, when the drive shaft 17 rotates and drives the deflector 16 to rotate, the deflector 16 will generate a wind force away from the connector 101, which will generate negative pressure in the connector 101. Under the action of negative pressure, it will assist the patient in performing the blowing action.

[0070] With the above settings, the direction of the airflow generated by the deflector 16 when the driving device 18 is working can be changed by changing the deflection direction of the deflector 16 when the patient breathes. The deflection of the deflector 16 is mechanically interlocked with the positive or negative pressure in the connecting cylinder 2, making the adjustment more convenient and increasing the speed of the deflection direction of the deflector 16. This increases the speed of the deflection of the deflector 16 in pumping and drawing air, thereby ensuring that the pumping or drawing air action is more consistent with the patient's inhalation or exhalation action, improving the ventilation effect. Compared with the existing plunger-type ventilation equipment, this device uses pressure for pumping and drawing air, avoiding damage to the patient's trachea caused by excessive pressure during pumping or drawing air.

[0071] Specifically, when the patient inhales, the horizontal plate 13 is in a state away from the drive device 18, and the connecting frame 15 is also in a state away from the drive device 18, thus separating the first locking member 21 and the second locking member 22. When the patient exhales, the horizontal plate 13 moves toward the drive device 18, causing the connecting frame 15 to move toward the drive device 18. This changes the deflection direction of the deflector 16, thus changing the direction of the airflow. Simultaneously, the connecting frame 15 moves the first locking member 21 toward the second locking member 22, causing them to engage. Therefore, when the patient exhales, the drive device 18 rotates the drive shaft 17, causing the deflector 16 to rotate. At the same time, the counterweight 23 will also rotate with the drive shaft 17. When the patient completes the blowing action, and the drive device 18 stops working, the drive shaft 17 will continue to rotate for a period of time under the inertia of the counterweight 23, and drive the deflector 16 to continue to rotate for a certain period of time. At this time, the connector 101 and the hysteresis housing 1 maintain a negative pressure state, and the one-way valve 35 is opened, so that the outside gas enters the connector 101 through the one-way valve 35, and the gas in the connector 101 and the hysteresis housing 1 is discharged to the outside. This avoids the patient's breathing from becoming rapid due to the residual air in the connector 101 and the hysteresis housing 1 during the patient's long breathing process, which would cause the concentration of carbon dioxide to increase when the patient inhales.

[0072] It should be noted that when the counterweight 23 drives the drive shaft 17 to rotate by inertia, there is a large resistance, mainly the resistance generated by the rotation of the drive device 18 and the resistance between the deflector plate 16 and the air. Under the action of resistance, the counterweight 23 rotates by inertia for a short time, so that the counterweight 23 has stopped rotating before the patient performs the next inhalation action.

[0073] With the above settings, when the patient blows air, the deflector 16 can continue to rotate with the counterweight 23 for a certain period of time, thereby emptying the air exhaled by the patient in the connector 101 and the condensation housing 1. This avoids the increase in carbon dioxide concentration caused by the patient's exhaled air remaining in the connector 101 and the condensation housing 1 during the patient's long breathing process, which would cause the patient to breathe rapidly and improve the patient's recovery speed.

[0074] Under the action of the limiting block 2401 and the limiting groove, the driving shaft 17, the driven shaft 14 and the rotating shaft 24 can rotate synchronously and slide against each other, ensuring that the driving shaft 17 can drive the rotating shaft 24 to rotate when the deflection direction of the deflection plate 16 changes. Since the driven shaft 14 can rotate with the driving shaft 17, the phenomenon of twisting between the connecting frame 15 and the deflection plate 16 and changing the deflection angle of the deflection plate 16 is prevented, thus improving the stability of the device.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0076] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An assisted mechanical ventilation device triggered by negative pressure during spontaneous breathing, characterized in that, include: Hysteresis housing (1), one end of which is provided with a connector (101), and the other end is connected to the outside; The measuring mechanism is set inside the hysteresis housing (1). The measuring mechanism includes a follower component and a blocking component. The blocking component can change the conduction state of the connector (101). The blocking component cooperates with the follower component to make the follower component move when the patient breathes. The pump pressure assembly is connected to the measuring mechanism. The pump pressure assembly includes a power structure and a transmission structure. The power structure is equipped with multiple sets of inclined deflection plates (16) that rotate in a circular motion. When the follower assembly is activated, the transmission structure can drive the deflection plates (16) to deflect, thereby changing the direction of gas flow. The counterweight (23) is rotatably installed inside the hysteresis housing (1). The counterweight (23) is provided with a second locking member (22) coaxial with it. The second locking member (22) cooperates with the first locking member (21) connected to the transmission assembly, so that the deflection plate (16) can rotate with the counterweight (23) when the patient blows air.

2. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 1, characterized in that, The follower assembly includes a connecting cylinder (2) communicating with the connector (101). A sealing plug (3) is slidably disposed inside the connecting cylinder (2). A connecting shaft passing through the connecting cylinder (2) is disposed on the sealing plug (3). A side plate (4) is fixed to one end of the connecting shaft away from the sealing plug (3). A first slider (7) is slidably disposed on the side plate (4). The first slider (7) is connected to an energy storage structure disposed on the side plate (4). The follower assembly also includes a guide plate (9) connected to the connecting cylinder (2) and a follower rod (8) connected to the first slider (7). A first pulley (801) located at the end of the follower rod (8) away from the first slider (7) can roll within the guide plate (9).

3. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 2, characterized in that, The energy storage structure includes a first slide groove (401) arranged along the length of the side plate (4), a first slider (7) slidably disposed in the first slide groove (401), and the first slider (7) slidably connected to a horizontal shaft (5) disposed in the first slide groove (401). A first spring (6) is sleeved on the horizontal shaft (5), one end of the first spring (6) is connected to the side wall of the first slide groove (401), and the other end is connected to the first slider (7). The guide plate (9) is provided with a first inclined groove (901) and a second inclined groove (902). The first inclined groove (901) and the second inclined groove (902) are connected, and the first pulley (801) can roll in the first inclined groove (901) and the second inclined groove (902).

4. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 2, characterized in that, The sealing assembly includes a rotating shaft (24) rotatably mounted inside the hysteresis housing (1) and connected to the power structure. A rotating component (29) is fixed at one end of the rotating shaft (24) away from the power structure. Two second slide grooves (30) are symmetrically arranged on the rotating component (29). A second slider (31) is slidably mounted in the second slide groove (30). A steel ball (32) is connected to one side of the second slider (31). The sealing assembly also includes two sealing plates (28) symmetrically and slidably disposed on the inner wall of the hysteresis housing (1). The two sealing plates (28) are connected to an elastic structure disposed on the rotating shaft (24). The elastic structure is connected to the other side of the second slider (31).

5. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 4, characterized in that, The elastic structure includes a follower sleeve (25) sleeved on the rotating shaft (24), the follower sleeve (25) is connected to the second slider (31) through a support rod (33), and the follower sleeve (25) is fixedly connected to the abutment plate (2501) disposed in the rotating shaft (24). A crossbar (26) is rotatably mounted on the abutment plate (2501). Two traction rods (27) are symmetrically mounted on the end of the crossbar (26) away from the abutment plate (2501). The traction rods (27) are rotatably connected to the sealing plate (28). A second spring (34) is also fitted on the rotating shaft (24). One end of the second spring (34) is connected to the rotating component (29), and the other end is connected to the follower sleeve (25).

6. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 4, characterized in that, The power structure includes a drive device (18) fixed outside the hysteresis housing (1), the output shaft of the drive device (18) is connected to a drive shaft (17) rotatably installed inside the hysteresis housing (1), and the drive shaft (17) is rotatably connected to the deflection plate (16). The interior of the drive shaft (17) is hollow, and the rotating shaft (24) can be inserted into the drive shaft (17). The rotating shaft (24) is provided with a limiting block (2401) along its length direction. The limiting block (2401) slides in conjunction with the limiting groove provided in the drive shaft (17).

7. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 6, characterized in that, The transmission structure includes a connecting plate (10) fixedly connected to the side plate (4). The connecting plate (10) has an "L" shape and penetrates the hysteresis housing (1). A second pulley (11) is rotatably mounted on the connecting plate (10). The transmission structure also includes a connecting frame (15) coaxially arranged with the drive shaft (17). The connecting frame (15) is connected to the deflection plate (16) through a connecting kit. A driven shaft (14) is provided on the connecting frame (15). The driven shaft (14) is rotatably connected to a horizontal plate (13) provided in the hysteresis housing (1). A drive plate (12) is provided on the horizontal plate (13). The drive plate (12) is connected to the second pulley (11). The connecting frame (15) is also connected to the first locking member (21) via a connecting plate (20).

8. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 7, characterized in that, A fitting block (1301) is provided at one end of the horizontal plate (13) away from the connecting frame (15), and the fitting block (1301) can slide in the fitting groove (102) formed on the side wall of the hysteresis housing (1); The drive plate (12) is provided with an inclined groove (1202) and two horizontal grooves (1201). The two horizontal grooves (1201) are respectively connected to the two ends of the inclined groove (1202), and the inclined groove (1202) and the two horizontal grooves (1201) form a guide groove. The second pulley (11) can roll in the guide groove.

9. The assisted mechanical ventilation device triggered by negative pressure of spontaneous breathing according to claim 7, characterized in that, The connecting kit includes a connector (19) disposed on the side of the deflector plate (16), the connector (19) having a connecting groove (1901) along its length, and a No. 3 pulley (1501) rotatably mounted on the connecting frame (15) being able to roll within the connecting groove (1901).

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