Breathing machine pressure sensor detection device

Abstract

The invention discloses a respirator pressure sensor detection device, belongs to the technical field of medical instruments, and aims to solve the problems that a large amount of time is often needed for replacing and maintaining a damaged sensor, when a device used by an acute patient is damaged, new equipment is replaced and adjusted, the use of the patient is often influenced by the time spent in the process, and the use cost is high. The device comprises a main body detector and a replacement mechanism, a mounting mechanism for mounting and supporting is arranged on the inner side of the rear part of the main body detector, and through cooperation of all parts of the replacement mechanism, a good main pressure sensing head can be pushed into a connecting port, so that the main pressure sensing head can be pushed into the connecting port, and the main pressure sensing head can be conveniently replaced. The normal detection of the circulating gas pressure of the main gas guide pipe is continued, the failed main pressure sensing head is automatically and quickly replaced, the breathing machine can continuously and accurately control the ventilation pressure by automatically replacing the failed pressure sensor, effective breathing support can be provided for the breathing machine in time, and the treatment opportunity is not delayed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically to a detection device for a ventilator pressure sensor. Background Art

[0002] In modern clinical medicine, as an effective means of artificially replacing the function of autonomous ventilation, ventilators have been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgeries, respiratory support treatment, and first aid resuscitation, and occupy a very important position in the field of modern medicine. A ventilator is a crucial medical device that can prevent and treat respiratory failure, reduce complications, and save and extend the lives of patients. The pressure sensor is a key component of the ventilator, which is responsible for collecting the pressure signals in the ventilator airway in real time. The accuracy of these signals has a crucial impact on the treatment effect of the ventilator and the safety of patients.

[0003] When the current ventilator pressure sensor detection device is in use, when the pressure sensor is damaged and fails, due to the inability to accurately monitor and control the pressure, patients may not receive appropriate ventilation support, which will in turn affect gas exchange and oxygenation functions. Although most existing devices have an alarm function, replacing and maintaining the damaged device often requires a lot of time. When the device used by acute patients is damaged and then a new device needs to be replaced and adjusted, the time spent in this process often affects the use of patients, thus endangering the lives of patients, and further reducing the use effect after the detection device is used.

[0004] In view of the above problems, a detection device for a ventilator pressure sensor is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a detection device for a ventilator pressure sensor. By using this device to work, the problem that replacing and maintaining the damaged device often requires a lot of time is solved. When the device used by acute patients is damaged and then a new device needs to be replaced and adjusted, the time spent in this process often affects the use of patients, thus endangering the lives of patients.

[0006] To achieve the above object, the present invention provides the following technical solution: A ventilator pressure sensor detection device includes a main body detector and a replacement mechanism. An installation mechanism for installation and support is provided inside the rear of the main body detector. The replacement mechanism for sensor replacement is arranged in the middle of the inner side of the installation mechanism. The replacement mechanism includes a reduction motor, a rotating disk, an extension convex block, a linkage rotating disk, a matching convex block, and a fixed sleeve. The output end of the reduction motor is connected to the rotating disk, and an extension convex block is fixed on the outer side of the rotating disk. A linkage rotating disk is arranged at the bottom of the rotating disk, and a matching convex block is fixed in the middle of the surface of the linkage rotating disk. A fixed sleeve is fixed on the outer part of the surface of the linkage rotating disk; The replacement mechanism further includes a pressing head, a pushing sleeve, a return spring, a magnetic attraction seat, a main pressure sensing head, a contact head, and a contact seat. A pressing head is arranged below the inner side of the fixed sleeve, and a pushing sleeve is connected above the pressing head. A return spring is arranged below the outer part of the pushing sleeve. A magnetic attraction seat is installed in the middle of the inner side of the pushing sleeve, and a main pressure sensing head is arranged above the inner side of the pushing sleeve. A contact head is arranged on one side of the outer part of the main pressure sensing head, and a contact seat is arranged above the contact head.

[0007] Further, the reduction motor is rotationally connected to the linkage rotating disk through the rotating disk, the extension convex block, and the matching convex block. The pressing head is elastically connected to the fixed sleeve through the return spring, and the pushing sleeve is slidably connected to the fixed sleeve through the pressing head and the return spring. The main pressure sensing head is magnetically connected to the pushing sleeve through the magnetic attraction seat, and the main pressure sensing head is electrically connected to the main body detector through the contact head and the contact seat.

[0008] Further, the main body detector includes a control panel, an air outlet pipe, and a rotating cover plate. An air outlet pipe is arranged in the middle of the front end of the control panel, and a rotating cover plate is arranged below the rear side of the control panel.

[0009] Further, the installation mechanism includes an installation cavity, a support frame, a main air duct, and a connection port. A support frame is installed in the middle of the inner side of the installation cavity, and a main air duct is connected above the inside of the installation cavity. A connection port is arranged in the middle of the lower part of the main air duct.

[0010] Further, a flow splitting mechanism for branch flow is arranged on one side above the installation mechanism. The flow splitting mechanism includes an air inlet pipe, a flow splitting sleeve, a secondary air duct, and a secondary pressure sensing head. A flow splitting sleeve is arranged above the air inlet pipe, and a secondary air duct is connected to the middle of one side of the flow splitting sleeve. A secondary pressure sensing head is installed in the middle of the upper part of the secondary air duct.

[0011] Further, the air inlet pipe is communicated with the secondary air duct through the flow splitting sleeve, and the air inlet pipe is communicated with the main air duct through the flow splitting sleeve. A regulating mechanism for flow splitting control is arranged in the middle of the inner side of the flow splitting mechanism.

[0012] Furthermore, the adjustment mechanism includes a ventilation chamber, a sealing piece, a connecting spring, and an electromagnetic coil. A sealing piece is arranged on one side inside the ventilation chamber, and connecting springs are connected to the upper and lower sides at the rear of the sealing piece. An electromagnetic coil is arranged on the other side inside the ventilation chamber.

[0013] Furthermore, the sealing piece is elastically connected to the ventilation chamber through the connecting spring, and the sealing piece is in contact with the front surface of the auxiliary air duct. The electromagnetic coil is electrically connected to the main body detector through the ventilation chamber.

[0014] Furthermore, a fitting mechanism for fitting and sealing is arranged in the middle below the installation mechanism. The fitting mechanism includes a sealing ring, an inflation chamber, an air guiding channel, and an air guiding port. An inflation chamber is arranged in the middle inside the sealing ring, and an air guiding channel is connected to one side above the inflation chamber. An air guiding port is arranged on one side at the top of the air guiding channel. The sealing ring is communicated with the main air duct through the inflation chamber, the air guiding channel, and the air guiding port.

[0015] Furthermore, the fitting mechanism further includes an exhaust channel and a duckbill piece. The other side above the inflation chamber is connected to the exhaust channel, and a duckbill piece is arranged at the top of the exhaust channel. The inflation chamber is communicated with the main air duct through the exhaust channel and the duckbill piece.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the cooperation between the various parts of the replacement mechanism, the present invention can push a good main pressure sensing head into the connection port, continue to detect the normal pressure of the gas flowing through the main air duct, and complete the automatic and rapid replacement of the failed main pressure sensing head. Automatically replacing the failed pressure sensor can ensure that the ventilator continuously and accurately controls the ventilation pressure, prevent complications caused by inaccurate pressure monitoring. Automatically replacing the sensor does not require manual operation by medical staff, saving their time and energy, enabling the ventilator to quickly return to the normal working state, and avoiding equipment idleness caused by waiting for manual replacement of the sensor. For patients in urgent need of a ventilator, this can promptly provide them with effective respiratory support and not delay the treatment opportunity.

[0017] 2. Through the shunt mechanism and the adjustment mechanism, the present invention can continue to detect the gas pressure when oxygen flows through the auxiliary air duct. Thus, before the replacement of the failed main pressure sensing head, it can automatically switch the flowing pipeline, seamlessly connect the pressure measurement work, ensure continuous acquisition of pressure data, provide continuous and stable data support for the control algorithm of the ventilator, enable the ventilator to continuously adjust the ventilation parameters according to the pressure data, and maintain normal respiratory support for the patient.

[0018] 3. Through the fitting mechanism, relying on the automatic air intake and expansion of the sealing ring, when the main pressure sensor head and the connection port quickly extend into the work, the sealing performance of the interface can be ensured, preventing the possibility of leakage. At the same time, when the inflation pressure in the inflation chamber is too high, the excess air pressure can be automatically discharged, so as to maintain the expansion degree of the expanded sealing ring, avoid the sealing ring from cracking due to continuous air intake, and thus ensure the stable use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic front-side three-dimensional external structure diagram of the whole of the present invention; Figure 2 is a schematic rear-side three-dimensional external structure diagram of the whole of the present invention; Figure 3 is a schematic rear-side internal three-dimensional structure diagram of the whole of the present invention; Figure 4 is a schematic rear-view three-dimensional structure diagram of the support frame of the present invention; Figure 5 is a schematic front-view three-dimensional structure diagram of the linkage turntable of the present invention; Figure 6 is a schematic internal three-dimensional structure diagram of the fixing sleeve in the uncompressed state of the present invention; Figure 7 is a schematic internal three-dimensional structure diagram of the fixing sleeve in the compressed state of the present invention; Figure 8 is a schematic internal sectional three-dimensional structure diagram of the flow dividing sleeve of the present invention; Figure 9 is a schematic internal front-view structure diagram of the flow dividing sleeve of the present invention; Figure 10 is a schematic internal three-dimensional structure diagram of the insertion of the main pressure sensor head and the connection port of the present invention; Figure 11 is a schematic sectional three-dimensional structure diagram of the sealing ring of the present invention.

[0020] In the figure: 1. Main body detector; 101. Control panel; 102. Air outlet pipe; 103. Rotating cover plate; 2. Installation mechanism; 201. Installation cavity; 202. Support frame; 203. Main air duct; 204. Connection port; 3. Replacement mechanism; 301. Reduction motor; 302. Rotating disk; 303. Extension convex block; 304. Linkage rotating disk; 305. Matching convex block; 306. Fixed sleeve; 307. Extrusion head; 308. Thrust sleeve; 309. Return spring; 310. Magnetic suction seat; 311. Main pressure sensor head; 312. Contact head; 313. Contact seat; 4. Shunt mechanism; 401. Air inlet pipe; 402. Shunt sleeve; 403. Subordinate air duct; 404. Subordinate pressure sensor head; 5. Adjustment mechanism; 501. Ventilation cavity; 502. Sealing piece; 503. Connection spring; 504. Electromagnetic coil; 6. Fitting mechanism; 601. Sealing ring; 602. Inflation cavity; 603. Air guiding channel; 604. Air guiding port; 605. Exhaust channel; 606. Duckbill piece. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In order to solve the technical problem that replacing and maintaining a damaged sensor often requires a lot of time. When the device is damaged during the use by an acute patient, replacing and adjusting a new device takes a time that often affects the use of the patient, thus endangering the life safety of the patient, as Figures 1-7 shown, the following preferred technical solutions are provided: A ventilator pressure sensor detection device includes a main body detector 1 and a replacement mechanism 3 disposed in the middle inside an installation mechanism 2. An installation mechanism 2 for installation and support is disposed inside the rear of the main body detector 1. The main body detector 1 includes a control panel 101 installed in the middle of the surface of the main body detector 1. An air outlet pipe 102 is disposed in the middle of the front end of the control panel 101. A rotating cover plate 103 is disposed below the rear side of the control panel 101. The main body detector 1 is an existing ventilator pressure sensor detection device, and a first signal generation module, a second signal generation module, a sampling module, a failure determination module, and an existing alarm and prompt structure are disposed inside it; The installation mechanism 2 includes an installation cavity 201 disposed inside the rear of the main body detector 1. A support frame 202 is installed in the middle inside the installation cavity 201. And a main air duct 203 is connected above the inside of the installation cavity 201. A connection port 204 is disposed in the middle below the main air duct 203. The main air duct 203 is communicated with the air outlet pipe 102; Through the main body detector 1, parameters such as the amplitude, frequency, and first sampling rate of the detection signal are determined according to specific ventilator models such as adult and pediatric ventilators and treatment scenarios such as general wards and intensive care units. For example, for a pediatric ventilator in a low-flow treatment scenario, the amplitude may be set to 1.5 volts, the frequency to 3 kHz, and the first sampling rate to 2000 times per second. Then, the first signal generation module generates a detection signal according to the set parameters, the second signal generation module generates a pressure feedback signal based on the aforementioned principle, and then the sampling module samples according to the calculated sliding window size and second sampling rate, and the discrete index calculation module calculates the coefficient of variation; For example, within a sampling period, a specific number of pressure feedback samples are obtained. First, the average value and standard deviation are calculated, and then the coefficient of variation is calculated. If the coefficient of variation is less than the preset threshold, the failure determination module issues a signal indicating that the pressure sensor has failed. At the same time, the ventilator system can take corresponding measures, such as alarm prompts, switching to a backup sensor, or adjusting the working mode, etc. Through precise signal generation, sampling, and index calculation, the sensor status can be quickly and accurately judged, providing reliable information for medical staff in a short time and enhancing the safety of ventilator treatment. Timely failure detection can avoid incorrect pressure control caused by sensor failures, thereby preventing adverse effects on the patient's respiratory treatment; The replacement mechanism 3 includes a reduction motor 301 installed on the support frame 202. The output end of the reduction motor 301 is rotatably connected to a rotating disk 302, and an extension bump 303 is fixed on the outer side of the rotating disk 302. A linkage rotating disk 304 is arranged at the bottom of the rotating disk 302, and a mating bump 305 is integrally arranged in the middle of the surface of the linkage rotating disk 304. A fixed sleeve 306 is fixed on the outer part of the surface of the linkage rotating disk 304. The reduction motor 301 is rotationally connected to the linkage rotating disk 304 through the rotating disk 302, the extension bump 303, and the mating bump 305; A squeeze head 307 is arranged below the inner side of the fixed sleeve 306, and a push sleeve 308 is fixedly connected above the squeeze head 307. A return spring 309 is arranged below the outer part of the push sleeve 308. A magnetic attraction seat 310 is installed in the middle of the inner side of the push sleeve 308, and a main pressure sensing head 311 is arranged above the inner side of the push sleeve 308. A contact head 312 is arranged on one side of the outer part of the main pressure sensing head 311, and a contact seat 313 is arranged above the contact head 312; The squeeze head 307 is elastically connected to the fixed sleeve 306 through the return spring 309, and the push sleeve 308 is slidably connected to the fixed sleeve 306 through the squeeze head 307 and the return spring 309. The main pressure sensing head 311 is magnetically connected to the push sleeve 308 through the magnetic attraction seat 310, and the main pressure sensing head 311 is electrically connected to the main body detector 1 through the contact head 312 and the contact seat 313. The main pressure sensing head 311 can be adsorbed on through the magnetic attraction seat 310; When the main pressure sensor head 311 extends into the connection port 204 to detect the normal pressure of the gas flowing through the main air duct 203, at this time, the extrusion head 307 and the push sleeve 308 will be extruded by the rotating disk 302 and the extension bump 303, so that the return spring 309 is compressed, and the main pressure sensor head 311 is pushed upward. In this state, the contact head 312 for conducting electricity of the main pressure sensor head 311 will contact the contact seat 313 of the main body detector 1, so that the main pressure sensor head 311 can be normally powered on and work; Through the reduction motor 301, when it is determined that the main pressure sensor head 311 fails to work, the rotating disk 302 can be driven to rotate clockwise together with the extension bump 303. At this time, the extension bump 303 will separate from the extrusion head 307, and the extrusion force of the push sleeve 308 disappears. Under the action of the return spring 309, the extrusion head 307 and the push sleeve 308 will drive the main pressure sensor head 311 to move downward, so that the failed main pressure sensor head 311 is separated from the connection port 204 and the contact head 312 is separated from the contact seat 313; At this time, the rotating disk 302 continues to rotate and contacts the mating bump 305. After the contact, the rotating disk 302 continues to drive the mating bump 305 and the linkage rotating disk 304 with a certain rotational resistance to rotate 180 degrees, so that the positions of the upper and lower two groups of oppositely arranged fixed sleeves 306 and the main pressure sensor head 311 are swapped, so that the failed main pressure sensor head 311 rotates to the lower part, and the good main pressure sensor head 311 rotates to the vertical upper position; At this time, the reduction motor 301 drives the rotating disk 302 to rotate counterclockwise together with the extension bump 303, so that the extension bump 303 pushes the replaced extrusion head 307, the push sleeve 308 and the good main pressure sensor head 311 upward, so that the good main pressure sensor head 311 is pushed into the connection port 204 to continue to detect the normal pressure of the gas flowing through the main air duct 203. In this way, the automatic and rapid replacement of the failed main pressure sensor head 311 can be completed. Automatically replacing the failed pressure sensor can ensure that the ventilator continuously and accurately controls the ventilation pressure, prevent complications caused by inaccurate pressure monitoring. Automatically replacing the sensor does not require manual operation by medical staff, saving their time and energy, and can quickly restore the ventilator to its normal working state, avoiding equipment idleness caused by waiting for manual replacement of the sensor. For patients in urgent need of a ventilator, this can provide them with effective respiratory support in time without delaying the treatment opportunity.

[0023] In order to solve the technical problem that the effectiveness of detection and gas supply cannot be guaranteed during the replacement of the pressure sensor, there will be abnormalities caused by detection and gas supply intermittence, such as Figures 1-5 and Figure 8 and Figure 9As shown in the figure, the following preferred technical solutions are provided: A flow splitting mechanism 4 is provided on one side above the installation mechanism 2. The flow splitting mechanism 4 includes an intake pipe 401 connected to an external oxygen supply machine. Above the intake pipe 401, a flow splitting sleeve 402 is communicated. In the middle of one side of the flow splitting sleeve 402, a secondary guide pipe 403 is communicated. In the middle above the secondary guide pipe 403, a secondary pressure sensing head 404 is installed. The intake pipe 401 is communicated with the secondary guide pipe 403 through the flow splitting sleeve 402, and the intake pipe 401 is communicated with the main guide pipe 203 through the flow splitting sleeve 402; In the middle inside the flow splitting mechanism 4, an adjusting mechanism 5 is provided. The adjusting mechanism 5 includes a ventilation cavity 501 provided in the middle inside the flow splitting sleeve 402. On one side inside the ventilation cavity 501, a sealing piece 502 is provided. Above and below the rear side of the sealing piece 502, connecting springs 503 are connected. On the other side inside the ventilation cavity 501, an electromagnetic coil 504 is provided. The sealing piece 502 is elastically connected to the ventilation cavity 501 through the connecting spring 503, and the sealing piece 502 is in contact with the front surface of the front end of the secondary guide pipe 403. The electromagnetic coil 504 is electrically connected to the main body detector 1 through the ventilation cavity 501; Through the sealing piece 502, when the main pressure sensing head 311 is working normally, it is pulled by the connecting spring 503 and fits at the inlet of the secondary guide pipe 403, so that the secondary guide pipe 403 in the normal working state is in a closed state, and the gas flows through the main guide pipe 203. When the main pressure sensing head 311 fails, the electromagnetic coil 504 is energized, so that the electromagnetic coil 504 generates a magnetic adsorption force. At this time, a strong suction force will be generated on the magnetic sealing piece 502, so that the sealing piece 502 quickly approaches the electromagnetic coil 504 and fits at the inlet of the main guide pipe 203, making the main guide pipe 203 airtight and allowing the secondary guide pipe 403 to flow. The output end of the secondary guide pipe 403 is communicated with the outlet pipe 102. At this time, oxygen will flow through the secondary guide pipe 403. Through the secondary pressure sensing head 404, which has the same model as the main pressure sensing head 311 and is an existing piezoresistive pressure sensor, it can continue to detect the gas pressure when oxygen flows through the secondary guide pipe 403. In this way, before the main pressure sensing head 311 is replaced due to failure, the flowing pipeline can be automatically switched, the pressure measurement work can be seamlessly connected, the continuous acquisition of pressure data can be ensured, continuous and stable data support can be provided for the control algorithm of the ventilator, the situation of flow interruption during the replacement of the main pressure sensing head 311 can be avoided, the ventilator can continuously adjust the ventilation parameters according to the pressure data, maintain the normal respiratory support of the patient, and at the same time, after the main pressure sensing head 311 is replaced, the electromagnetic coil 504 is powered off and the sealing piece 502 is reset, so that the gas normally flows through the main pressure sensing head 311 for work.

[0024] To solve the technical problem that the sealing performance of the interface of the replaced pressure sensor is poor and easy to cause leakage, such as Figure 4 、 Figure 5 andFigure 10 and Figure 11 As shown in Figure 11 , the following preferred technical solutions are provided: A fitting mechanism 6 for fitting and sealing is provided in the middle below the installation mechanism 2. The fitting mechanism 6 includes a sealing ring 601 provided above the outside of the main pressure sensing head 311. In the middle of the inner side of the sealing ring 601, an inflation chamber 602 is provided. And on one side above the inflation chamber 602, an air guiding channel 603 is connected. On one side of the top end of the air guiding channel 603, an air guiding port 604 is provided. The sealing ring 601 is communicated with the main air duct 203 through the inflation chamber 602, the air guiding channel 603 and the air guiding port 604; On the other side above the inflation chamber 602, an exhaust duct 605 is connected. And at the top of the exhaust duct 605, a duckbill piece 606 is provided. The inflation chamber 602 is communicated with the main air duct 203 through the exhaust duct 605 and the duckbill piece 606. Through the fitting mechanism 6, the sealing performance of the main pressure sensing head 311 inserted into the connection port 204 can be ensured, and leakage can be prevented; Through the air guiding port 604, which faces the flowing direction of the gas in the main air duct 203, the flowing gas can be automatically captured, so that the gas flows into the inflation chamber 602 along the air guiding channel 603. Under the continuous inflow of the gas, the gas in the inflation chamber 602 continuously increases, causing the sealing ring 601 to expand. The expanded sealing ring 601 will tightly fit and wrap the outer surface of the main pressure sensing head 311, and can also fit more tightly with the connection port 204. Thus, relying on the automatic inflation of the sealing ring 601, when the main pressure sensing head 311 and the connection port 204 are quickly inserted into work, the sealing performance of the interface can be ensured, and the possibility of leakage can be prevented. When the continuous inflation pressure in the inflation chamber 602 is too high, the excessive air pressure will use the exhaust duct 605 to flow through and open the two fitting duckbill pieces 606, so that the excess air pressure can be automatically discharged, thereby maintaining the expansion degree of the expanded sealing ring 601 and avoiding the rupture of the sealing ring 601 caused by continuous intake of air.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilator pressure sensor detection device, comprising a main detector (1) and a replacement mechanism (3), characterized in that: An installation mechanism (2) for installation and support is provided at the rear inner side of the main body detector (1), and a replacement mechanism (3) for replaceable sensors is arranged in the middle of the inner side of the installation mechanism (2). The replacement mechanism (3) includes a reduction motor (301), a rotating disk (302), an extension bump (303), a linkage rotating disk (304), a mating bump (305) and a fixing sleeve (306). The output end of the reduction motor (301) is connected to the rotating disk (302), and an extension bump (303) is fixed on the outer side of the rotating disk (302). A linkage rotating disk (304) is arranged at the bottom of the rotating disk (302), and a mating bump (305) is fixed in the middle of the surface of the linkage rotating disk (304). A fixing sleeve (306) is fixed on the outer part of the surface of the linkage rotating disk (304). The replacement mechanism (3) further includes an extrusion head (307), a pushing sleeve (308), a return spring (309), a magnetic attraction seat (310), a main pressure sensing head (311), a contact head (312) and a contact seat (313). An extrusion head (307) is arranged at the lower inner side of the fixing sleeve (306), and a pushing sleeve (308) is connected above the extrusion head (307). A return spring (309) is arranged at the lower outer part of the pushing sleeve (308). A magnetic attraction seat (310) is installed in the middle of the inner side of the pushing sleeve (308), and a main pressure sensing head (311) is arranged at the upper inner side of the pushing sleeve (308). A contact head (312) is arranged at one side of the outer part of the main pressure sensing head (311), and a contact seat (313) is arranged above the contact head (312).

2. The detection device for a ventilator pressure sensor according to claim 1, wherein: The reduction motor (301) is rotationally connected to the linkage rotating disk (304) through the rotating disk (302), the extension bump (303) and the mating bump (305). The extrusion head (307) is elastically connected to the fixing sleeve (306) through the return spring (309), and the pushing sleeve (308) is slidably connected to the fixing sleeve (306) through the extrusion head (307) and the return spring (309). The main pressure sensing head (311) is magnetically connected to the pushing sleeve (308) through the magnetic attraction seat (310), and the main pressure sensing head (311) is electrically connected to the main body detector (1) through the contact head (312) and the contact seat (313).

3. The detection device for a ventilator pressure sensor according to claim 1, wherein: The main body detector (1) includes a control panel (101), an air outlet pipe (102) and a rotating cover plate (103). An air outlet pipe (102) is arranged in the middle of the front end of the control panel (101), and a rotating cover plate (103) is arranged at the lower rear side of the control panel (101).

4. A detection device for a ventilator pressure sensor according to claim 1, characterized in that: The installation mechanism (2) includes an installation cavity (201), a support frame (202), a main air duct (203) and a connection port (204). A support frame (202) is installed in the middle of the inner side of the installation cavity (201), and a main air duct (203) is connected above the interior of the installation cavity (201). A connection port (204) is arranged in the middle of the lower part of the main air duct (203).

5. The detecting device for a ventilator pressure sensor according to claim 1, wherein: Above one side of the installation mechanism (2), a flow splitting mechanism (4) for branch flow is provided. The flow splitting mechanism (4) includes an air inlet pipe (401), a flow splitting sleeve (402), a secondary air guide pipe (403), and a secondary pressure sensing head (404). Above the air inlet pipe (401), a flow splitting sleeve (402) is provided. In the middle of one side of the flow splitting sleeve (402), a secondary air guide pipe (403) is connected. Above the middle of the secondary air guide pipe (403), a secondary pressure sensing head (404) is installed.

6. The detecting device for a ventilator pressure sensor according to claim 5, wherein: The air inlet pipe (401) is communicated with the secondary air guide pipe (403) through the flow splitting sleeve (402), and the air inlet pipe (401) is communicated with the main air guide pipe (203) through the flow splitting sleeve (402). In the middle of the inner side of the flow splitting mechanism (4), an adjusting mechanism (5) for flow splitting control is provided.

7. The detection device for a ventilator pressure sensor according to claim 6, characterized in that: The adjusting mechanism (5) includes an air vent cavity (501), a sealing piece (502), a connecting spring (503), and an electromagnetic coil (504). On one side inside the air vent cavity (501), a sealing piece (502) is provided. Above and below the rear side of the sealing piece (502), a connecting spring (503) is connected. On the other side inside the air vent cavity (501), an electromagnetic coil (504) is provided.

8. The detecting device for a ventilator pressure sensor according to claim 7, wherein: The sealing piece (502) is elastically connected to the air vent cavity (501) through the connecting spring (503), and the sealing piece (502) is attached to the front surface of the secondary air guide pipe (403). The electromagnetic coil (504) is electrically connected to the main body detector (1) through the air vent cavity (501).

9. The detection device for a ventilator pressure sensor according to claim 1, wherein: Below the middle of the installation mechanism (2), a fitting mechanism (6) for fitting and sealing is provided. The fitting mechanism (6) includes a sealing ring (601), an inflation cavity (602), an air guiding channel (603), and an air guiding port (604). In the middle of the inner side of the sealing ring (601), an inflation cavity (602) is provided. Above one side of the inflation cavity (602), an air guiding channel (603) is connected. On one side of the top of the air guiding channel (603), an air guiding port (604) is provided. The sealing ring (601) is communicated with the main air guide pipe (203) through the inflation cavity (602), the air guiding channel (603), and the air guiding port (604).

10. A detecting device for a ventilator pressure sensor according to claim 9, characterized in that: The fitting mechanism (6) further includes an exhaust channel (605) and a duckbill piece (606). Above the other side of the inflation cavity (602), an exhaust channel (605) is connected. On the top of the exhaust channel (605), a duckbill piece (606) is provided. The inflation cavity (602) is communicated with the main air guide pipe (203) through the exhaust channel (605) and the duckbill piece (606).

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