A ventilator provided with a ventilation drive structure

Abstract

The application discloses a ventilator with a ventilation driving structure and relates to the technical field of ventilators, which comprises a ventilator body, an air inlet pipe is installed at the output end of the ventilator body, an installation pipe is installed at the end of the air inlet pipe away from the ventilator body, a buffer is installed at the end of the installation pipe away from the air inlet pipe, a communication pipe is arranged on the annular surface of the installation pipe, a blocking piece is installed between the communication pipe and the installation pipe, a sensing piece is installed in the communication pipe, and the sensing piece is in contact with the blocking piece. The buffer structure is installed at the end of the installation pipe away from the air inlet pipe, the buffer structure is used for temporarily storing gas at a position close to the oxygen cover, the blocking structure is installed in the blocking cylinder, the sensing structure is used for opening the blocking structure by contacting the blocking structure, the temporarily stored gas in the buffer structure is rapidly introduced into the oxygen cover, the required time for air delivery is reduced, the space in the communication pipe is narrow and close to the space in the oxygen cover, and therefore the sensitivity of the sensing structure is improved.

Description

Technical Field

[0001] This invention relates to the technical field of ventilators, specifically to a ventilator equipped with a ventilation drive structure. Background Technology

[0002] Ventilation-driven ventilators, also known as synchronously triggered ventilators, are a type of respiratory support device that initiates the gas delivery process by sensing the patient's spontaneous breathing effort. Unlike traditional timed and metered controlled ventilation modes, it is no longer machine-driven, but rather a patient-triggered, machine-assisted approach. That is, when the patient attempts to inhale, the device uses highly sensitive sensors to detect a drop in airway pressure or a slight change in airflow, and immediately delivers gas at a preset pressure to help the patient complete a full breath. This demand-driven mode makes mechanical ventilation closer to the logic of natural breathing.

[0003] However, because there is a certain distance between the ventilator and the patient, the exhaust tube of the ventilator needs to be of a certain length. But when the patient's breathing is weak, it takes a certain amount of time for the signal of the patient inhaling gas to be transmitted to the ventilator, which makes it easy for the ventilator to fail to detect the patient's breathing. In addition, the long tube length can cause the ventilator to miss the patient's breathing time when sending gas into the oxygen mask, resulting in the patient choking. Summary of the Invention

[0004] The purpose of this invention is to provide a ventilator with a ventilation drive structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A ventilator with a ventilation drive structure includes a ventilator body, an air inlet tube installed at the output end of the ventilator body, an installation tube installed at the end of the air inlet tube away from the ventilator body, a buffer installed at the end of the installation tube away from the air inlet tube, a connecting tube provided on the annular surface of the installation tube, a sealing element installed between the connecting tube and the installation tube, an oxygen mask installed at the end of the connecting tube away from the installation tube, and a sensor installed inside the connecting tube, the sensor being in contact with the sealing element.

[0006] Furthermore, the buffer component includes a buffer cylinder, which is installed at the end of the mounting pipe away from the intake pipe. A balance hole is opened on the annular surface of the buffer cylinder on the side away from the mounting pipe. A buffer plug is slidably connected inside the buffer cylinder. A plurality of first elastic elements are installed at the end of the buffer plug away from the intake pipe. The ends of the first elastic elements away from the buffer plug are installed inside the buffer cylinder.

[0007] Furthermore, the sealing element includes a sealing cylinder, which is installed between the connecting pipe and the installation pipe and connects the connecting pipe and the installation pipe. A sealing plug is installed inside the sealing cylinder. A first through hole is opened on the side of the sealing plug facing the connecting pipe, and a second through hole is opened on the side of the sealing plug away from the connecting pipe. The first through hole and the second through hole are connected. A supporting member is slidably connected inside the first through hole, and the end of the supporting member away from the first through hole is in contact with the sensing element.

[0008] Furthermore, the supporting member includes a piston rod, which is inserted into the first through hole and slides in contact with the second through hole. A second elastic member is installed at the end of the piston rod facing into the first through hole. The end of the second elastic member away from the piston rod is installed in the first through hole. A force-saving member is installed at the end of the piston rod away from the second elastic member. The end of the force-saving member away from the piston rod is in contact with the sensing member.

[0009] Furthermore, the force-saving component includes a support rod, which is installed at the end of the piston rod away from the first elastic element. A wedge block is installed at the end of the support rod away from the piston rod. A lifting plate is hinged inside the sealing cylinder. One side of the lifting plate is in sliding contact with the wedge block, and the side of the lifting plate away from the wedge block is in contact with the sensing element.

[0010] Furthermore, the sensing element includes a partition plate, which is installed inside the connecting pipe. A circular hole is provided on the side of the partition plate, and airbags are installed on both sides of the circular hole. The airbag near the oxygen mask end is in contact with the lifting plate.

[0011] Furthermore, a sealing block is slidably connected inside the installation tube. A through groove is formed on the inner annular surface of the installation tube near the buffer cylinder. Multiple grooves are formed on the annular surface of the sealing block. An inclined plate is inserted into the groove and slidably connected to the through groove. A third elastic element is installed at the end of the inclined plate facing the groove. The end of the third elastic element away from the inclined plate is installed in the groove. An exhaust device is installed on the annular surface of the installation tube. The sealing block slides in contact with the opening of the exhaust device. The end of the exhaust device away from the installation tube extends to the ventilation tube near the oxygen mask. A pressing element is installed inside the exhaust device on the side away from the installation tube. The pressing element contacts the airbag on the side away from the oxygen mask.

[0012] Furthermore, the exhaust component includes a connecting pipe, which is installed on the annular surface of the mounting pipe. The sealing block slides in contact with the opening of the mounting pipe. A pressing component is installed at the end of the connecting pipe away from the mounting pipe. A first one-way valve and a second one-way valve are respectively installed on both sides of the pressing component. An exhaust pipe is installed at the exhaust end of the second one-way valve. The exhaust pipe extends into a connecting pipe near the oxygen mask.

[0013] Furthermore, the extrusion component includes an extrusion cylinder, which is installed at the end of the connecting pipe away from the mounting pipe. An extrusion plug is slidably connected inside the extrusion cylinder, and the pressing component is installed on the side of the extrusion plug away from the mounting pipe.

[0014] Furthermore, the pressing component includes a pressing rod, which is installed on the side of the squeeze plug away from the installation tube. The end of the pressing rod away from the squeeze plug extends into the connecting tube and is fitted with a pressing plate. The end of the pressing plate away from the pressing rod contacts the airbag on the side away from the oxygen mask. Beneficial effects

[0015] 1. This invention utilizes a buffer structure consisting of a buffer cylinder, a buffer plug, and a first elastic element installed at the end of the installation pipe away from the air inlet pipe. This buffer structure temporarily stores gas near the oxygen mask. A sealing cylinder is installed between the connecting pipe and the installation pipe, and a sealing structure consisting of a sealing plug, a piston rod, a second elastic element, a support rod, a wedge, and a lifting plate is installed inside the sealing cylinder. A sensing structure consisting of a partition plate and an airbag installed inside the connecting pipe contacts the sealing structure. When the patient inhales, the air pressure inside the connecting pipe decreases. At this time, the sensing structure expands and contacts the sealing structure, opening it and allowing the gas temporarily stored in the buffer structure to quickly enter the oxygen mask, reducing the time required for air delivery. Furthermore, because the space inside the connecting pipe is small and close to the space inside the oxygen mask, even when the patient's breathing is weak, changes can still occur, causing the sealing structure to open, thereby increasing the sensitivity of the sensing structure.

[0016] 2. This invention utilizes an exhaust structure consisting of a connecting pipe, a compression cylinder, a compression plug, a first one-way valve, a second one-way valve, a lowering rod, a lowering plate, and an exhaust pipe, mounted on the annular surface of the mounting pipe. When the expansion effect of the sensing structure is not significant, preventing the sealing structure from opening, the gas within the buffer structure re-compresses the sealing block, causing it to move away from the buffer structure and from the connecting pipe. The gas then enters the compression cylinder, compressing the compression plug and moving it towards the connecting pipe. The movement of the compression plug, via the lowering rod, moves the lowering plate, compressing the airbag on the side away from the oxygen mask and forcing the gas from that airbag into the airbag closer to the oxygen mask, thus reopening the sealing structure. This prevents the sensing structure from failing to open the unlocking structure due to weak patient breathing. Furthermore, as the compression plug moves within the compression cylinder, it discharges the gas from the compression cylinder into the connecting pipe closer to the oxygen mask through the exhaust pipe, increasing the amount of air entering the oxygen mask and ensuring that patients with weak breathing are passively given more air, compensating for the reduced air intake when breathing is weak. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a ventilator with a ventilation drive structure according to the present invention; Figure 2This is an internal cross-sectional view of the mounting tube and buffer cylinder of a ventilator with a ventilation drive structure according to the present invention; Figure 3 This is a schematic diagram of the assembly of the inclined plate and the third elastic element of a ventilator with a ventilation drive structure in the sealing block according to the present invention. Figure 4 This is a cross-sectional view of the connecting tube of a ventilator with a ventilation drive structure according to the present invention. Figure 5 This is a cross-sectional view of the compression cylinder of a ventilator with a ventilation drive structure according to the present invention; Figure 6 This is a cross-sectional view of the sealing cylinder of a ventilator with a ventilation drive structure according to the present invention; Figure 7 This is a cross-sectional view of the ventilator plug of a ventilator with a ventilation drive structure according to the present invention.

[0018] In the diagram: 1. Ventilator body; 2. Inlet tube; 3. Mounting tube; 4. Oxygen mask; 5. Buffer cylinder; 6. Connecting tube; 7. Exhaust pipe; 8. Sealing cylinder; 9. Squeezing cylinder; 10. Connecting tube; 11. Balance hole; 12. First elastic element; 13. Buffer plug; 14. Through groove; 15. Sealing block; 16. Inclined plate; 17. Third elastic element; 18. Second through hole; 19. Sealing plug; 20. Lifting plate; 21. Air bag; 22. Divider plate; 23. Second one-way valve; 24. Lower pressure plate; 25. Lower pressure rod; 26. First one-way valve; 27. Squeezing plug; 28. Support rod; 29. ​​Inclined block; 30. Piston rod; 31. Second elastic element. Detailed Implementation

[0019] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] Please see Figures 1 to 7The present invention provides a ventilator with a ventilation drive structure, including a ventilator body 1, an air inlet tube 2 installed at the output end of the ventilator body 1, an installation tube 3 installed at the end of the air inlet tube 2 away from the ventilator body 1, a buffer cylinder 5 installed at the end of the installation tube 3 away from the air inlet tube 2, a balance hole 11 opened on the annular surface of the buffer cylinder 5 away from the installation tube 3, a buffer plug 13 slidably connected inside the buffer cylinder 5, and a plurality of first elastic elements 12 installed at the end of the buffer plug 13 away from the air inlet tube 2. The first elastic elements 12 are springs. In the normal state, the end of the first elastic element 12 away from the buffer plug 13 is installed inside the buffer cylinder 5.

[0022] When the ventilator body 1 is started, air is first introduced into the buffer cylinder 5 through the air inlet tube 2. The amount of air introduced is greater than the storage capacity of the buffer cylinder 5. When the air enters the buffer cylinder 5, the air enters and compresses the buffer plug 13, causing the buffer plug 13 to move away from the mounting tube 3. At the same time, the first elastic element 12 is gradually compressed until the buffer plug 13 moves to the balance hole 11. The excess gas is discharged through the balance hole 11. When the ventilator body 1 stops introducing gas, the first elastic element 12 releases its rebound force to push the buffer plug 13 to move and re-block the balance hole 11, thereby ensuring that the amount of air stored in the buffer cylinder 5 is constant.

[0023] An annular surface of the mounting tube 3 is provided with a connecting tube 6. An oxygen mask 4 is installed at the end of the connecting tube 6 away from the mounting tube 3. A sealing cylinder 8 is installed between the connecting tube 6 and the mounting tube 3, connecting the two tubes. A sealing plug 19 is installed inside the sealing cylinder 8. A first through hole is opened on the side of the sealing plug 19 facing the connecting tube 6, and a second through hole 18 is opened on the side of the sealing plug 19 away from the connecting tube 6. The first through hole and the second through hole 18 communicate with each other. A piston rod 30 is slidably connected inside the first through hole and is inserted into the... The piston rod 30 is installed in the first through hole and slides in contact with the second through hole 18. A second elastic element 31 is installed at the end of the piston rod 30 facing the first through hole. The second elastic element 31 is a spring. When the second elastic element 31 is in the normal state, the end of the second elastic element 31 away from the piston rod 30 is installed in the first through hole. However, when the second elastic element 31 is in the normal state, the piston rod 30 blocks the second through hole 18. But when the second elastic element 31 is compressed and drives the piston rod 30 to move into the first through groove 14, the piston rod 30 separates from the second through groove 14, and the second through groove 14 opens.

[0024] A holding rod 28 is installed at the end of the piston rod 30 away from the second elastic element 31, and a wedge block 29 is installed at the end of the holding rod 28 away from the piston rod 30. A lifting plate 20 is hinged inside the sealing cylinder 8. One side of the lifting plate 20 is in sliding contact with the wedge block 29. A partition plate 22 is installed inside the connecting pipe 6. A circular hole is opened on the side of the partition plate 22, and an airbag 21 is installed on both sides of the circular hole. The airbag 21 near the oxygen mask 4 is in contact with the lifting plate 20. When the airbag 21 near the oxygen mask 4 inflates, the inflation of the airbag 21 can drive the lifting plate 20 to deflect. The deflection of the lifting plate 20 drives the wedge block 29 to move toward the sealing plug 19, and then pushes the piston rod 30 into the first through groove 14 through the holding rod 28. That is, when the airbag 21 near the oxygen mask 4 inflates, the piston rod 30 opens the second through groove 14.

[0025] By installing a buffer structure consisting of a buffer cylinder 5, a buffer plug 13, and a first elastic element 12 at the end of the installation pipe 3 away from the air inlet pipe 2, the gas is temporarily stored in a position close to the oxygen mask 4. A sealing cylinder 8 is installed between the connecting pipe 6 and the installation pipe 3, and a sealing structure consisting of a sealing plug 19, a piston rod 30, a second elastic element 31, a support rod 28, an inclined block 29, and a lifting plate 20 is installed inside the sealing cylinder 8. The sensing structure consisting of a partition plate 22 and an air bag 21 installed inside the connecting pipe 6 contacts the sealing structure. When the patient inhales, the air pressure inside the connecting pipe 6 decreases. At this time, the sensing structure expands and contacts the sealing structure, opening the sealing structure and allowing the gas temporarily stored in the buffer structure to quickly enter the oxygen mask 4, reducing the time required for air delivery. Furthermore, because the space inside the connecting pipe 6 is small and close to the space inside the oxygen mask 4, even when the patient's breathing is weak, changes can still occur, thereby opening the sealing structure and increasing the sensitivity of the sensing structure.

[0026] A sealing block 15 is slidably connected inside the mounting tube 3. A through groove 14 is opened on the inner annular surface of the mounting tube 3 near the buffer cylinder 5. Multiple grooves are opened on the annular surface of the sealing block 15. An inclined plate 16 is inserted into the groove and slidably connected in the through groove 14. A third elastic element 17 is installed on the end of the inclined plate 16 facing the groove. The third elastic element 17 is a spring. In the normal state, the end of the third elastic element 17 away from the inclined plate 16 is installed in the groove. When air is introduced into the air intake pipe 2, the gas pushes the sealing block 15 to move towards the buffer cylinder 5 until it moves and pushes the inclined plate 16 into the groove, so that the gas can enter the buffer cylinder 5 through the through groove 14. When the air intake pipe 2 stops introducing air, the third elastic element 17 pushes the inclined plate 16 out of the groove again and seals the through groove 14.

[0027] A connecting pipe 10 is installed on the annular surface of the mounting pipe 3. The sealing block 15 slides in contact with the opening of the mounting pipe 3. A compression cylinder 9 is installed at the end of the connecting pipe 10 away from the mounting pipe 3. A compression plug 27 is slidably connected inside the compression cylinder 9. A first one-way valve 26 and a second one-way valve 23 are respectively installed on both sides of the compression cylinder 9. The first one-way valve 26 only allows outside air to enter the compression cylinder 9, and the second one-way valve 23 only allows air to exit the compression cylinder 9. An exhaust pipe 7 is installed at the exhaust end of the second one-way valve 23. 7 extends into the connecting pipe 6 near the oxygen mask 4. The input end of the first one-way valve 26 is connected to the gas storage device for patient breathing. When the squeeze plug 27 moves away from the connecting pipe 10, the air temporarily stored in the squeeze cylinder 9 enters the connecting pipe 6 near the oxygen mask 4 through the second one-way valve 23 and the exhaust pipe 7. When the squeeze plug 27 moves towards the connecting pipe 10, the air pressure in the squeeze cylinder 9 decreases, and the gas storage device for patient breathing introduces air into the squeeze cylinder 9 through the first one-way valve 26.

[0028] Next, a pressure rod 25 is installed on the side of the compression plug 27 away from the installation tube 3. The end of the pressure rod 25 away from the compression plug 27 extends into the connecting tube 6 and is fitted with a pressure plate 24. The end of the pressure plate 24 away from the pressure rod 25 contacts the airbag 21 on the side away from the oxygen mask 4. When the compression plug 27 moves to the side away from the connecting tube 10, the compression plug 27 compresses the airbag 21 on the side away from the oxygen mask 4 through the pressure rod 25 and the pressure plate 24, causing the gas in the airbag 21 to enter the airbag 21 on the side close to the oxygen mask 4 through the round hole, causing the airbag 21 to inflate.

[0029] It should be noted that, by installing a connecting pipe 10, a compression cylinder 9, a compression plug 27, a first one-way valve 26, a second one-way valve 23, a lower pressure rod 25, a lower pressure plate 24, and an exhaust pipe 7 on the annular surface of the mounting pipe 3, when the expansion effect of the sensing structure is not obvious, causing the sealing structure to be unable to open, the gas in the buffer structure re-compresses the sealing block 15, causing the sealing block 15 to move away from the buffer structure and move away from the connecting pipe 10. The gas then enters the compression cylinder 9 and compresses the compression plug 27, moving it towards the connecting pipe 6. The movement of the compression plug 27 is facilitated by the lower pressure rod. 25 drives the lower pressure plate 24 to move, squeezing the airbag 21 on the side away from the oxygen mask 4, and squeezing the gas in the airbag 21 on the side away from the oxygen mask 4 into the airbag 21 on the side closer to the oxygen mask 4, thus reopening the sealing structure. This prevents the sensing structure from being unable to open the unlocking structure due to the patient's weak breathing. When the squeeze plug 27 moves in the squeeze cylinder 9, it discharges the gas in the squeeze cylinder 9 into the connecting pipe 6 on the side closer to the oxygen mask 4 through the exhaust pipe 7, thereby increasing the amount of air entering the oxygen mask 4 and ensuring that the patient with weak breathing is passively given more air, making up for the less air inhaled when the patient's breathing is weak.

[0030] When using this ventilator, first set the intake frequency of the ventilator body 1 according to the patient's respiratory rate. When the ventilator is set to intake during patient exhalation, the intake tube 2 delivers air from the ventilator body 1 to the mounting tube 3, where it contacts the sealing block 15 and inclined plate 16 located in the mounting tube 3. This pushes the sealing block 15 to one side of the buffer cylinder 5, while simultaneously pushing the inclined plate 16 into the groove. At this time, the air entering the ventilator body 1 can then enter the buffer cylinder 5 through the through groove 14, pushing the buffer plug 13 away from the mounting tube 3. The movement allows air to be stored in the buffer cylinder 5, while the first elastic element 12 is gradually compressed until the buffer plug 13 is pushed to the balance hole 11. At this point, the buffer cylinder 5 reaches its maximum air storage capacity, and then the excess gas overflows from the balance hole 11, ensuring that the air stored in the buffer cylinder 5 each time meets the patient's breathing needs. During this process, after the air intake tube 2 has finished intake, the first elastic element 12 releases its rebound force and, through the reset of the saturated buffer plug 13, squeezes the air in the buffer cylinder 5 and slowly resets the sealing block 15, but not completely.

[0031] When the patient begins to inhale, the air pressure inside the oxygen mask 4 decreases, allowing air to enter through the connecting tube 6. This inflates the airbag 21 installed near the side of the oxygen mask 4. The inflated airbag 21 pushes the lifting plate 20 to deflect towards the blocking plug 19. The deflection of the lifting plate 20 causes the inclined block 29 to move towards the blocking plug 19, which in turn pushes the piston rod 30 into the first through slot 14 via the holding rod 28. At this time, the second elastic element 31 is gradually compressed. Subsequently, the piston rod 30 opens the second through slot 14. The air stored in the buffer cylinder 5 is released and rebounded by the first elastic element 12, causing the buffer plug 13 to move towards the mounting tube 3, compressing the air in the buffer cylinder 5. This allows the air to enter the connecting tube 6 through the second through hole 18, then into the oxygen mask 4, and finally into the patient's body.

[0032] When the patient begins to exhale again, the exhaled air compresses the airbag 21 near the oxygen mask 4, causing the airbag 21 to return to its original position. At this time, the second elastic element 31 releases its rebound force, pushing the piston rod 30 back out of the first through slot 14 and re-sealing the second through slot 14.

[0033] When the patient's breathing is weak, the reduced air pressure in the connecting tube 6 cannot inflate the airbag 21 near the oxygen mask 4, and the lifting plate 20 cannot open the sealing structure composed of the blocking plug 19, piston rod 30, second elastic element 31, holding rod 28, inclined block 29, and lifting plate 20, then after the air intake tube 2 stops supplying air, the first elastic element 12 will still release its rebound force. When this released rebound force pushes the buffer plug 13 to compress the air in the buffer cylinder 5, the air cannot be discharged through the second channel 14, and can only be squeezed in the opposite direction to the sealing block 15, causing the sealing block 15 to move away from the buffer cylinder 5 until it is completely reset. At this time, the sealing block 15 is removed from the connection between the connecting tube 10 and the installation tube 3. Some of the gas inside the buffer cylinder 5 enters the connecting pipe 10 through the sealing cylinder 8 and squeezes the squeeze plug 27, causing the squeeze plug 27 to move away from the connecting pipe 10 inside the squeeze cylinder 9. At the same time, the lowering rod 25 and the lowering plate 24 squeeze the air bag 21 away from the oxygen mask 4, causing the gas in the air bag 21 to enter the air bag 21 near the oxygen mask 4 through the round hole. The sealing structure is then reopened, allowing the gas in the buffer cylinder 5 to enter the connecting pipe 6 near the oxygen mask 4 through the second through hole 18. At the same time, the air pressure in the squeeze cylinder 9 is forced into the connecting pipe 6 near the oxygen mask 4 through the second one-way valve 23 and the exhaust pipe 7, increasing the amount of air in the oxygen mask 4 and compensating for the less air inhaled when the patient's breathing is weak.

[0034] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A ventilator equipped with a ventilation drive structure, comprising a ventilator body, characterized in that, An air inlet pipe is installed at the output end of the ventilator body. An installation pipe is installed at the end of the air inlet pipe away from the ventilator body. A buffer is installed at the end of the installation pipe away from the air inlet pipe. A connecting pipe is provided on the annular surface of the installation pipe. A sealing element is installed between the connecting pipe and the installation pipe. An oxygen mask is installed at the end of the connecting pipe away from the installation pipe. A sensor is installed inside the connecting pipe. The sensor is in contact with the sealing element.

2. A ventilator with a ventilation drive structure according to claim 1, characterized in that, The buffer component includes a buffer cylinder, which is installed at the end of the mounting pipe away from the intake pipe. A balance hole is opened on the annular surface of the buffer cylinder on the side away from the mounting pipe. A buffer plug is slidably connected inside the buffer cylinder. A plurality of first elastic elements are installed at the end of the buffer plug away from the intake pipe. The ends of the first elastic elements away from the buffer plug are installed inside the buffer cylinder.

3. A ventilator with a ventilation drive structure according to claim 2, characterized in that, The sealing element includes a sealing cylinder, which is installed between the connecting pipe and the installation pipe and connects the connecting pipe and the installation pipe. A sealing plug is installed inside the sealing cylinder. A first through hole is opened on the side of the sealing plug facing the connecting pipe, and a second through hole is opened on the side of the sealing plug away from the connecting pipe. The first through hole and the second through hole are connected. A supporting member is slidably connected in the first through hole. The end of the supporting member away from the first through hole is in contact with the sensing element.

4. A ventilator with a ventilation drive structure according to claim 3, characterized in that, The supporting member includes a piston rod, which is inserted into a first through hole and slides in contact with a second through hole. A second elastic element is installed at the end of the piston rod facing into the first through hole. The end of the second elastic element away from the piston rod is installed in the first through hole. A force-saving element is installed at the end of the piston rod away from the second elastic element. The end of the force-saving element away from the piston rod is in contact with a sensing element.

5. A ventilator with a ventilation drive structure according to claim 4, characterized in that, The force-saving component includes a support rod, which is installed at the end of the piston rod away from the first elastic element. A wedge block is installed at the end of the support rod away from the piston rod. A lifting plate is hinged inside the sealing cylinder. One side of the lifting plate is in sliding contact with the wedge block, and the side of the lifting plate away from the wedge block is in contact with the sensing element.

6. A ventilator with a ventilation drive structure according to claim 5, characterized in that, The sensing element includes a partition plate, which is installed inside a connecting pipe. A circular hole is provided on the side of the partition plate, and airbags are installed on both sides of the circular hole. The airbag near the oxygen mask end is in contact with the lifting plate.

7. A ventilator with a ventilation drive structure according to claim 6, characterized in that, A sealing block is slidably connected inside the installation tube. A through groove is opened on the inner annular surface of the installation tube near the buffer cylinder. Multiple grooves are opened on the annular surface of the sealing block. An inclined plate is inserted into the groove and slidably connected in the through groove. A third elastic element is installed on the end of the inclined plate facing the groove. The end of the third elastic element away from the inclined plate is installed in the groove. An exhaust device is installed on the annular surface of the installation tube. The sealing block slides in contact with the opening of the exhaust device. The end of the exhaust device away from the installation tube extends to the ventilation tube near the oxygen mask. A pressing element is installed on the side of the exhaust device away from the installation tube. The pressing element contacts the airbag on the side away from the oxygen mask.

8. A ventilator with a ventilation drive structure according to claim 7, characterized in that, The exhaust component includes a connecting pipe, which is installed on the annular surface of the mounting pipe. The sealing block slides in contact with the opening of the mounting pipe. A squeezing member is installed at the end of the connecting pipe away from the mounting pipe. A first one-way valve and a second one-way valve are respectively installed on both sides of the squeezing member. An exhaust pipe is installed at the exhaust end of the second one-way valve. The exhaust pipe extends into a connecting pipe near the oxygen mask.

9. A ventilator with a ventilation drive structure according to claim 8, characterized in that, The extrusion component includes an extrusion cylinder, which is installed at the end of the connecting pipe away from the installation pipe. An extrusion plug is slidably connected inside the extrusion cylinder, and the pressing component is installed on the side of the extrusion plug away from the installation pipe.

10. A ventilator with a ventilation drive structure according to claim 9, characterized in that, The pressing component includes a pressing rod, which is installed on the side of the squeeze plug away from the installation tube. The end of the pressing rod away from the squeeze plug extends into the connecting tube and is fitted with a pressing plate. The end of the pressing plate away from the pressing rod contacts the airbag on the side away from the oxygen mask.

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