Analog breathing man device with aerosol injection function

Abstract

The application is a kind of simulated breathing human device with aerosol injection function, comprising a human body half model, a simulated lung breathing device is arranged in the torso of the human body half model, a nasal cavity air pipe and an oral cavity air pipe are arranged in the head cavity of the human body half model, an opening and closing valve is arranged on the nasal cavity air pipe and the oral cavity air pipe, the nasal cavity air pipe and the oral cavity air pipe are connected with the simulated lung breathing device through the air pipe, the nasal cavity air pipe is communicated with a nasal cavity, the oral cavity air pipe is communicated with an oral cavity, further comprising an aerosol injection device communicated with the nasal cavity, a detection membrane box is arranged at the upper end of the head cavity of the human body half model, the detection membrane box is connected with a sampling point at the trachea of the neck, a sampling point at the upper part of the nasal cavity and a sampling point at the oral cavity through a sampling pump device and a sampling pipeline, and a filter membrane is arranged in the detection membrane box. The application realizes aerosol injection and sampling in the simulated process such as breathing, and provides a physical experimental device for virus transmission mechanism research.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of simulated breathing devices, in particular to a simulated breathing human device with aerosol injection function. BACKGROUND

[0002] In recent years, major public health safety events caused by air transmission of droplets have occurred internationally from time to time. In the research of these infectious disease events, the research on the virus transmission mechanism caused by human droplets is particularly important. The respiratory simulation device can simulate the human respiratory process, and through experimental research on the virus transmission mechanism, it can provide effective basis for preventing the large-scale spread of public infectious diseases in the population. At present, the research of respiratory simulation devices involves the interdisciplinary problems of medical and engineering applications, and in the existing research, most of them are used for breathing machine detection, and there are few devices for simulating breathing of aerosol particles.

[0003] Moreover, because aerosols contain particulate matter, ordinary electromagnetic valves are prone to blockage, and the equivalent diameter is small, which is not conducive to high-throughput aerosol injection. Due to the blockage caused by aerosol particle deposition, ordinary flow meters such as conventional thermal flow meters, turbine flow meters, and high-precision rotameters cannot measure and control the flow of aerosols for a long time.

[0004] Therefore, in order to better study the transmission and movement characteristics of respiratory infectious viruses, a special device for simulating the human respiratory process is urgently needed in reality. SUMMARY

[0005] The present application aims to solve the problems of the prior art and provides a simulated breathing human device with aerosol injection function.

[0006] To achieve the above purpose, the following technical scheme is adopted in the present application.

[0007] A simulated breathing human device with aerosol injection function, comprising a human body half-body model, a simulated lung breathing device is arranged inside the torso of the human body half-body model, a nasal cavity air pipe and an oral cavity air pipe are arranged inside the head cavity of the human body half-body model, an opening and closing valve is arranged on each of the nasal cavity air pipe and the oral cavity air pipe, the nasal cavity air pipe and the oral cavity air pipe are connected with the simulated lung breathing device through the air pipe, the nasal cavity air pipe is communicated with a nasal cavity, the oral cavity air pipe is communicated with an oral cavity, the device further comprises an aerosol injection device communicated with the nasal cavity, a detection membrane box is arranged at the upper end of the head cavity of the human body half-body model, the detection membrane box is connected with a sampling point at the neck air pipe, a sampling point at the upper part of the nasal cavity, and a sampling point at the oral cavity through a sampling pump device and a sampling pipeline, and a filter membrane is arranged in the detection membrane box.

[0008] The aerosol injection device comprises a fixed plate, one side of the fixed plate is provided with a motor mounting plate, a screw mounting plate and a screw end plate in sequence, a ball screw and two guide rods are installed between the screw mounting plate and the screw end plate, a shaft coupling is installed between the motor mounting plate and the screw mounting plate, a direct current integrated torque servo motor is installed on the outside of the motor mounting plate, the ball screw is connected with the direct current integrated torque servo motor through the shaft coupling, a moving plate is screw-mounted on the ball screw, the two guide rods are arranged through the moving plate, a synchronous moving plate is arranged on the other side of the fixed plate and corresponds to the moving plate, a connecting rod is arranged between the synchronous moving plate and the moving plate, a through groove is arranged on the fixed plate and is used for allowing the connecting rod to pass through and move, the direction of the through groove is consistent with the direction of the ball screw, an injector is arranged on the other side of the fixed plate, a piston is arranged in the injector, the piston is connected with a piston rod, the piston rod passes out of the injector and is fixedly connected with the synchronous moving plate, and an in-out sample reversing assembly is connected to the other end of the injector.

[0009] The in-out sample reversing assembly comprises a reversing valve body, a main communication pipeline in communication with the injector is arranged in the reversing valve body, an air inlet control pipeline and an air outlet control pipeline are respectively connected to the two sides of the main communication pipeline, the air inlet control pipeline is connected with an air inlet pipeline, the air outlet control pipeline is connected with an air outlet pipeline, a closing plate is arranged in the main communication pipeline and between the air inlet control pipeline and the air outlet control pipeline, and the closing plate is connected with a reversing drive air cylinder through a connecting rod arranged in the air outlet control pipeline.

[0010] Two guide rails are arranged on the fixed plate and between the screw mounting plate and the screw end plate.

[0011] The two guide rails are detachably installed on the fixed plate through counterbores.

[0012] The simulated lung breathing device comprises an upper fixed plate and a lower fixed plate, two air cylinders are installed between the upper fixed plate and the lower fixed plate, the bottom of the air cylinder piston in each air cylinder is connected with the push rod of a servo cylinder, the push rod of the servo cylinder is movably installed on a lead screw, the lead screw is connected with a servo motor, the inside of the upper fixed plate is a cavity structure, the top of each air cylinder is connected with the cavity structure of the upper fixed plate, and the top of the cavity structure of the upper fixed plate is connected with a trachea.

[0013] A pressure sensor is installed on the upper fixed plate and corresponds to the cavity.

[0014] The aerosol injection and sampling of the simulated process such as breathing are realized, and a physical experimental device is provided for virus transmission mechanism research. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the internal structure of the human body half-body model in the present application.

[0016] Figure 2A structural schematic diagram of the aerosol injection device in one direction of the application;

[0017] Figure 3 A structural schematic diagram of the aerosol injection device in another direction of the application;

[0018] Figure 4 A structural schematic diagram of the sample inlet and outlet reversing assembly of the aerosol injection device of the application;

[0019] In the figure: 1-human half-body model; 2-simulated lung breathing device; 3-nasal cavity air pipe; 4-oral cavity air pipe; 5-air pipe; 6-nasal cavity; 7-oral cavity; 8-aerosol injection device; 9-detection film box; 10-filter film;

[0020] 201-upper fixed plate; 202-lower fixed plate; 203-air cylinder; 204-air cylinder piston; 205-servo electric cylinder; 206-push rod; 207-servo motor;

[0021] 801-fixed plate; 802-motor mounting plate; 803-screw mounting plate; 804-screw end plate; 805-ball screw; 806-guide rod; 807-coupling; 808-dc integrated torque servo motor; 809-moving plate; 8010-synchronous moving plate; 8011-syringe; 8012-piston; 8013-piston rod; 8014-sample inlet and outlet reversing assembly; 80141-reversing valve body; 80142-main communication pipeline; 80143-air inlet control pipeline; 80144-air outlet control pipeline; 80145-air inlet pipeline; 80146-air outlet pipeline; 80147-closed plate; 80148-connecting rod; 80149-reversing drive air cylinder;

[0022] The application will be described in detail below with reference to the embodiments of the application and the accompanying drawings. DETAILED DESCRIPTION

[0023] The principles and features of the application will be described below in conjunction with the accompanying drawings and the examples, which are only used to explain the application and not to limit the scope of the application. In the following paragraphs, the application will be described in more detail with examples. The advantages and features of the application will be more apparent according to the following description. It should be noted that the drawings are very simplified and use non-precise proportions, only to facilitate and clarify the purpose of assisting the description of the embodiments of the application.

[0024] It should be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it should be understood that when an element is referred to as being "connected, coupled, or "disposed" to another element, it can be directly connected, coupled, or disposed to the other element or intervening elements can also be present. As used herein, the terms "vertical", "horizontal", "left", "right", and the like are merely used for the purpose of illustration and description.

[0025] 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 belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0026] The application will be further described with reference to the drawings and embodiments:

[0027] A simulated breathing man device with aerosol injection function, as shown in Figures 1 to 4 The human body half model 1 is provided with a simulated lung breathing device 2 inside the torso, the head cavity of the human body half model 1 is provided with a nasal cavity trachea 3 and an oral cavity trachea 4, the nasal cavity trachea 3 and the oral cavity trachea 4 are both provided with opening and closing valves, the nasal cavity trachea 3 and the oral cavity trachea 4 are both connected with the simulated lung breathing device 2 through a trachea 5, the nasal cavity trachea 3 is communicated with a nasal cavity 6, the oral cavity trachea 4 is communicated with an oral cavity 7, further comprising an aerosol injection device 8 communicated with the nasal cavity 6, the upper end of the head cavity of the human body half model 1 is provided with a detection film box 9, the detection film box 9 is connected with a sampling point at the trachea 5 of the neck, a sampling point at the upper part of the nasal cavity 6, and a sampling point at the oral cavity 7 through a sampling pump device and a sampling pipeline, and the detection film box 9 is provided with a filter film 10 inside.

[0028] The simulated lung breathing device 2 comprises an upper fixed plate 201 and a lower fixed plate 202, two air cylinders 203 are installed between the upper fixed plate 201 and the lower fixed plate 202, the bottom of the air cylinder piston 204 inside each air cylinder 203 is connected with the push rod 206 of a servo electric cylinder 205, the push rod 206 of the servo electric cylinder 205 is movably installed on a lead screw, the lead screw is connected with a servo motor 207, the inside of the upper fixed plate 203 is a cavity structure, the top of each air cylinder 203 is connected with the cavity structure of the upper fixed plate 203, and the top of the cavity structure of the upper fixed plate 203 is connected with the trachea 5. A pressure sensor is installed on the upper fixed plate 201 corresponding to the cavity.

[0029] The main structure of the simulated lung breathing device 2 is composed of a servo motor 207, a servo cylinder 205, a gas cylinder 203, an upper fixed plate 201 and a lower fixed plate 202. The servo cylinder 205 is selected because the servo cylinder 205 is an integrated design device of the servo motor 207 and the screw rod. Since it is a closed-loop servo control, the control accuracy of the servo cylinder 205 is high and the configuration is flexible. The rotation of the servo motor 207 can be accurately converted into the up-down linear motion of the gas cylinder piston 204 of the gas cylinder 203 through the push rod 206.

[0030] The simulated lung breathing device 2 adopts the gas cylinder 203 to simulate the structure of the human lung. The contraction and relaxation of the lung respiratory muscle in the human respiratory process are simulated by the up-down motion of the gas cylinder piston 204. The working principle is that the servo motor 207 drives the push rod 206 in the servo cylinder 205 to move up and down by positive and reverse rotation. The push rod 206 is connected to the gas cylinder piston 204. The servo motor 207 reverses the push rod 206 to drive the gas cylinder piston 204 to move upward. The gas in the gas cylinder 203 is discharged, simulating the human exhalation process. Conversely, the human inhalation process is simulated. The upper fixed plate 201 has a gas passage inside, connects the trachea 5 of the upper joint part assembly, and is connected to a pressure sensor. The pressure sensor can detect the pressure in the simulated lung.

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[0032] The aerosol injection device 8 is composed of a syringe 8011 and a piston 8012, and a linear motion assembly composed of a set of direct-current integrated torque servo motor 808 and ball screw 805 and linear guide rail 8015 drives the injection piston 8012, and the quantitative suction and high-pressure injection of aerosol are realized by controlling the direct-current integrated torque servo motor 808.

[0033] The sample inlet and outlet reversing assembly 8014 includes a reversing valve body 80141, which is internally provided with a main communication pipeline 80142 in communication with the syringe 8011, and the two sides of the main communication pipeline 80142 are respectively connected with an air inlet control pipeline 80143 and an air outlet control pipeline 80144, the air inlet control pipeline 80143 is connected with an air inlet pipeline 80145, the air outlet control pipeline 80144 is connected with an air outlet pipeline 80146, and a closing plate 80147 is arranged in the main communication pipeline 80142 between the air inlet control pipeline 80143 and the air outlet control pipeline 80144, and the closing plate 80147 is connected with a reversing drive cylinder 80149 through a connecting rod 80148 arranged in the air outlet control pipeline 80144.

[0034] When the closing plate 80147 blocks the air outlet control pipeline 80144, the air inlet control pipeline 80143 is in communication with the syringe 8011, and the aerosol is injected, and when the closing plate 80147 blocks the air inlet control pipeline 80143, the air outlet control pipeline 80144 is in communication with the syringe 8011, and the aerosol is injected, and the sample inlet and outlet reversing assembly 8014 is made of polytetrafluoroethylene material, and its smooth surface does not adhere to the characteristics, which effectively reduces the deposition of aerosol particulate matter.

[0035] The high-precision direct-current integrated torque servo motor 808 ensures the precision of the syringe 8011, and the large equivalent caliber sample inlet and outlet reversing mechanism ensures the high-throughput injection of aerosol.

[0036] When conducting aerosol breathing research, two breathing simulators are needed, first, the aerosol injection device 8 injects aerosol into the breathing simulator A, the breathing simulator A simulates a virus carrier to exhale aerosol particles with a marker, and the breathing simulator B simulates a healthy person to breathe normally, the particle concentration in the breathing system of the breathing simulator B is detected by detecting the filter membrane 10 in the membrane box 9, the filter membrane 10 is weighed before use, and the flow, time relationship and air extraction time are determined, then the filter membrane 10 is taken out and weighed, so as to determine whether the breathing simulator B inhales aerosol and how much aerosol is inhaled, which provides a basis for experimental research on the aerosol transmission mechanism.

[0037] The application is described above in conjunction with the drawings, and it is obvious that the specific implementation of the application is not limited by the above manner, as long as various improvements are made by using the method concept and technical scheme of the application, or are directly applied to other occasions without improvement, which are within the protection scope of the application.

Claims

1. A simulated breathing human device with aerosol injection function, comprising a human body half model (1), a simulated lung breathing device (2) is arranged in the inside of the torso of the human body half model (1), a nasal cavity air pipe (3) and an oral cavity air pipe (4) are arranged in the inside of the head cavity of the human body half model (1), the nasal cavity air pipe (3) and the oral cavity air pipe (4) are both provided with an opening and closing valve, the nasal cavity air pipe (3) and the oral cavity air pipe (4) are both connected with the simulated lung breathing device (2) through an air pipe (5), the nasal cavity air pipe (3) is communicated with a nasal cavity (6), and the oral cavity air pipe (4) is communicated with an oral cavity (7), characterized in that, Also include the nasal cavity (6) in communication with aerosol injection device (8), the head cavity of the human body half model (1) upper end is equipped with detection membrane box (9), detection membrane box (9) is connected with the sampling point at the trachea (5) of neck, the sampling point in the upper part of nasal cavity (6), the sampling point at oral cavity (7) through sampling pump device and sampling pipeline, detection membrane box (9) is equipped with filter membrane (10) in, detection is carried out through filter membrane (10) in detection membrane box (9), filter membrane (10) is weighed before use, according to the flow, time relationship, gas extraction certain time, then filter membrane (10) is weighed, to determine whether the respiratory simulation person inhales and inhales how much aerosol; The simulated lung breathing device (2) comprises an upper fixed plate (201) and a lower fixed plate (202), two air cylinders (203) are installed between the upper fixed plate (201) and the lower fixed plate (202), the bottom of the air cylinder piston (204) in each air cylinder (203) is connected with the push rod (206) of a servo cylinder (205), the push rod (206) of the servo cylinder (205) is movably installed on a lead screw, the lead screw is connected with a servo motor (207), the inside of the upper fixed plate (201) is a cavity structure, the top of each air cylinder (203) is connected with the cavity structure of the upper fixed plate (201), and the top of the cavity structure of the upper fixed plate (201) is connected with the trachea (5); The aerosol injection device (8) comprises a fixed plate (801), a motor mounting plate (802), a lead screw mounting plate (803) and a lead screw end plate (804) are sequentially arranged on one side of the fixed plate (801), a ball screw (805) and two guide rods (806) are installed between the lead screw mounting plate (803) and the lead screw end plate (804), a coupling (807) is installed between the motor mounting plate (802) and the lead screw mounting plate (803), a direct current integrated torque servo motor (808) is installed on the outside of the motor mounting plate (802), the ball screw (805) is connected with the direct current integrated torque servo motor (808) through the coupling (807), a moving plate (809) is threadedly installed on the ball screw (805), the two guide rods (806) are arranged on the moving plate (809), a synchronous moving plate (8010) is arranged on the other side of the fixed plate (801) and corresponds to the moving plate (809), a connecting rod is arranged between the synchronous moving plate (8010) and the moving plate (809), a through slot is arranged on the fixed plate (801) and is used for allowing the connecting rod to pass through and move, the direction of the through slot is consistent with the direction of the ball screw (805), an injector (8011) is arranged on the other side of the fixed plate (801), a piston (8012) is arranged in the injector (8011), the piston (8012) is connected with a piston rod (8013), the piston rod (8013) passes out of the injector (8011) and is fixedly connected with the synchronous moving plate (8010), and a sample switching component (8014) is connected to the other end of the injector (8011).

2. The simulated breathing manikin with aerosol injection function according to claim 1, characterized in that, The inlet-outlet sample reversing assembly (8014) comprises a reversing valve body (80141) internally provided with a main communication pipeline (80142) in communication with the injector (8011), the two sides of the main communication pipeline (80142) are respectively connected with an inlet gas control pipeline (80143) and an outlet gas control pipeline (80144), the inlet gas control pipeline (80143) is connected with an inlet gas pipeline (80145), the outlet gas control pipeline (80144) is connected with an outlet gas pipeline (80146), and the main communication pipeline (80142) is internally provided with a closing plate (80147) between the inlet gas control pipeline (80143) and the outlet gas control pipeline (80144), the closing plate (80147) is connected with a reversing drive air cylinder (80149) through a connecting rod (80148) penetratingly arranged in the outlet gas control pipeline (80144).

3. The simulated breathing manikin with aerosol injection function according to claim 2, characterized in that, Two guide rails (8015) are arranged on the fixed plate (801) between the lead screw mounting plate (803) and the lead screw end plate (804).

4. The simulated breathing manikin with aerosol injection function according to claim 3, characterized in that, The two guide rails (8015) are detachably mounted on the fixed plate (801) through counterbores.

5. The simulated breathing manikin with aerosol injection function according to claim 4, characterized in that, A pressure sensor is mounted on the upper fixed plate (201) corresponding to the cavity.

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