Breathing simulation device of airway model

Abstract

The utility model belongs to the technical field of breathing simulation, and particularly relates to a breathing simulation device of an airway model. The device comprises a control mechanism, the first air pump and the second air pump are mounted on the control mechanism; the CO2 gas cylinder assembly is communicated with the first gas pump through a three-way joint pipeline; the head model is connected with the three-way connector through a first air supply pipe, and the second air pump is communicated with the head model through a second air supply pipe pipeline; wherein in the simulation process, the CO2 gas cylinder assemblies are all in a CO2 release mode, and when the human body expiration state is simulated, the first gas pump and the second gas pump are both in the expiration state; when the human body inspiration state is simulated, the first air pump and the second air pump are both in the inspiration state. When air suction simulation is carried out, CO2 gas discharged into the first air pipe is sucked out through the first air pump, it is guaranteed that no CO2 gas exists in the head model, and the problem that in the prior art, during air suction simulation, CO2 gas remaining in a pipeline affects the detection accuracy is solved through cooperation of the first air pump and the three-way connector.

Description

Technical Field

[0001] The utility model belongs to the technical field of breathing simulation, and in particular relates to a breathing simulation device for an airway model. Background Art

[0002] The human respiratory system is a system in the human body that performs lung ventilation and gas exchange between air and blood. In the medical field, in order to conduct in-depth research on the movement of the lungs when the human body breathes, and at the same time avoid unnecessary harm to the human body caused by extreme operations, respiratory simulation devices are often used on the market to replace the human body for medical experiments.

[0003] At present, in the field of breathing simulation technology, the residual amount of CO2 in the mouth and nose is mostly used to simulate the breathing or inhalation state of the human body. In order to meet the requirement that there is no residual CO2 gas in the mouth and nose during inhalation, the existing breathing simulation device needs to close the CO2 gas delivery pipeline. During the simulation process, on the one hand, the CO2 gas delivery pipeline needs to be frequently closed / started, which reduces the service life of components. On the other hand, when the CO2 gas delivery pipeline is closed, some CO2 still remains in the pipeline, affecting the accuracy of the simulation detection. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects in the prior art that the CO2 delivery pipeline needs to be frequently closed / started, which reduces the service life of components and affects the accuracy of simulation detection, and provides a breathing simulation device for an airway model that does not require frequent closing / starting of the CO2 gas delivery pipeline and can ensure detection accuracy.

[0005] The utility model solves the technical problem by adopting a technical solution: a breathing simulation device for an airway model, comprising:

[0006] Controlling bodies;

[0007] a first air pump and a second air pump mounted on the control mechanism;

[0008] A CO2 gas cylinder assembly is connected to the first gas pump via a three-way joint pipeline;

[0009] The head model is connected to the three-way joint through a first air supply pipe, and the second air pump is connected to the head model through a second air supply pipe; wherein,

[0010] During the simulation process, the CO2 cylinder assemblies are in a CO2 release mode. When simulating the exhalation state of the human body, the first air pump and the second air pump are in an exhalation state; when simulating the inhalation state of the human body, the first air pump and the second air pump are in an inhalation state.

[0011] Furthermore, the control mechanism includes a control shell, a mounting hole opened on the control shell for mounting the first air pump and the second air pump, a control circuit arranged in the control shell for controlling the change of state of the first air pump and the second air pump, and a power supply for providing electrical energy to the control circuit.

[0012] Further, the control circuit includes a control unit, a first relay JK1, a second relay JK2, a power switch S1, and a control system switch S2;

[0013] The power supply is connected to the control unit circuit, wherein the positive pole of the power supply is connected in series with the power switch S1 and then connected to the control unit; the positive power output port of the control unit is connected in series with the control system switch and then connected to the normally open contact NO1 of the first relay and the normally open contact NO2 of the second relay; the common end of the first relay and the second relay are respectively connected to the two ends of the first air pump and the second air pump after being connected in parallel; the normally closed contact NC1 of the first relay is connected to the normally closed contact NC2 of the second relay and then returned to the negative power output port of the control unit.

[0014] Furthermore, the power supply is a 24V DC power supply, and the control unit output voltage is 5V.

[0015] Further, the switch OUT1 of the first relay JK1 is connected to the IO port of the control unit; the switch OUT2 of the second relay JK2 is connected to the IO port of the control unit.

[0016] Furthermore, when simulating the human body's inhalation state, the first air pump and the second air pump both rotate forward, the OUT1 port of the control unit outputs a high level, the OUT2 port outputs a low level, the first relay JK1 coil is energized, and the common terminal COM1 of the first relay is switched from normally closed to normally open and connected to the normally open contact NO1, the second relay JK2 coil maintains its original state, and the common terminal COM2 of the second relay maintains a normally closed connection with the normally closed contact NC2.

[0017] Furthermore, when simulating the breathing state of a human body, the first air pump and the second air pump are both reversed, the OUT1 port of the control unit outputs a low level, the OUT2 port outputs a high level, the coil of the second relay JK2 is energized, and the common terminal COM2 of the second relay is switched from normally closed to normally open and connected to NO2, the coil of the first relay JK1 maintains its original state, and the common terminal COM1 of the first relay maintains a normally closed connection with the normally closed contact NC1.

[0018] Furthermore, a wire threading hole is provided on the control housing, and the DC power supply is connected to the control unit via a wire.

[0019] Furthermore, the CO2 gas cylinder assembly includes a CO2 gas cylinder for loading CO2 gas, a CO2 gas pipe connected to the three-way connector, and a gas valve arranged on the CO2 gas cylinder.

[0020] Furthermore, the head model includes a model shell and a model inner cavity arranged inside the model shell; the ends of the first air supply pipe and the second air supply pipe away from the control mechanism are both connected to the air path of the model inner cavity.

[0021] The beneficial effects of the breathing simulation device of an airway model of the utility model are:

[0022] The utility model connects a first air pump on a pipeline between a CO2 cylinder assembly and a head model through a three-way joint, and utilizes the forward and reverse rotation of the first air pump to control the amount of CO2 gas entering the head model. During the simulation of human breathing, the CO2 cylinder assembly can be in an exhaust state all the time, and when performing an exhalation simulation, the air provided by the first air pump and the second air pump is mixed with the exhausted CO2 gas to simulate human exhaled gas, and when performing an inhalation simulation, the first air pump is utilized to suck out the CO2 gas discharged into the first trachea to ensure that there is no CO2 gas in the head model, so as to simulate the inhalation state of the human body. The utility model adopts the cooperation of the first air pump and the three-way joint, and solves the problem in the prior art that the residual CO2 gas in the pipeline affects the detection accuracy during the inhalation simulation, and has a simple overall structure and convenient control, and can be widely used in different types of simulation robots. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Figure 1 It is a structural schematic diagram of a breathing simulation device according to an embodiment of the utility model.

[0025] Figure 2 It is an exploded view of the control mechanism in the embodiment of the utility model.

[0026] Figure 3 It is a schematic diagram of a head model in an embodiment of the utility model.

[0027] Figure 4 It is a control circuit diagram in an embodiment of the utility model.

[0028] Figure 5 It is a control circuit diagram of the embodiment of the utility model when it is in the suction state.

[0029] Figure 6 It is a control circuit diagram of the embodiment of the utility model when it is in a calling state.

[0030] Figure 7It is an operation flow chart of the breathing simulation device according to an embodiment of the utility model.

[0031] In the figure: 1. control mechanism, 11. control shell, 12. mounting hole, 13. DC power supply, 14. wire, 2. first air pump, 3. second air pump, 4. CO2 cylinder assembly, 41. CO2 cylinder, 42. CO2 air pipe, 43. air valve, 5. head model, 51. model shell, 52. model inner cavity, 6. three-way connector, 7. first air supply pipe, 8. second air supply pipe. DETAILED DESCRIPTION

[0032] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0033] like Figure 1-Figure 6 A specific embodiment of a breathing simulation device for an airway model of the utility model shown in the figure comprises a control mechanism 1, a first air pump 2 and a second air pump 3 installed on the control mechanism 1, a CO2 cylinder assembly 4 connected to the first air pump 2 via a three-way joint 6 pipeline; a head model 5 connected to the three-way joint 6 via a first air supply pipe 7, and the second air pump 3 is connected to the head model 5 via a second air supply pipe 8 pipeline. It should be further explained that during the simulation process, the CO2 cylinder assembly 4 is in a CO2 release mode. When simulating the exhalation state of the human body, the first air pump 2 and the second air pump 3 are both in the exhalation state; when simulating the inhalation state of the human body, the first air pump 2 and the second air pump 3 are both in the inhalation state.

[0034] The utility model is provided with a first air pump 2 connected to a pipeline of a CO2 cylinder assembly 4 and a head model 5 through a three-way joint 6. The forward and reverse rotation of the first air pump 2 is used to control the amount of CO2 gas entering the head model 5. During the simulation of human breathing, the CO2 cylinder assembly 4 can be in an exhaust state all the time. When performing an exhalation simulation, the air provided by the first air pump 2 and the second air pump 3 is mixed with the exhausted CO2 gas to simulate the exhaled gas of the human body. When performing an inhalation simulation, the first air pump 2 is used to suck out the CO2 gas discharged into the first trachea to ensure that there is no CO2 gas in the head model 5 and simulate the inhalation state of the human body. The utility model adopts the cooperation of the first air pump 2 and the three-way joint 6 to solve the problem in the prior art that the residual CO2 gas in the pipeline affects the detection accuracy during the inhalation simulation.

[0035] like Figure 1 and Figure 2As shown, the CO2 gas cylinder assembly 4 in this embodiment includes a CO2 gas cylinder 41 for loading CO2 gas, a CO2 gas pipe 42 connected to the three-way connector 6, and a gas valve 43 arranged on the CO2 gas cylinder 41. When in use, the on-off of the gas circuit in the CO2 gas pipe 42 can be controlled by adjusting the gas valve 43. The head model 5 includes a model shell 51 and a model inner cavity 52 arranged inside the model shell 51; the first air supply pipe 7 and the second air supply pipe 8 are connected to the model inner cavity 52 at one end away from the control mechanism 1. In specific applications, the diameters of the first air supply pipe 7 and the second air supply pipe 8 can be adapted and adjusted according to the specific usage scenarios to suit head models 5 of different manufacturers and with different size requirements.

[0036] The control mechanism 1 in this embodiment includes a control housing 11, a mounting hole 12 provided on the control housing 11 for mounting the first air pump 2 and the second air pump 3, a control circuit provided in the control housing 11 for controlling the first air pump 2 and the second air pump 3 to change their states, and a power supply 13 for providing electrical energy to the control circuit. A threading hole is provided on the control housing 11, and the power supply 13 is connected to the control unit via a wire 14. The DC power supply 13 in this embodiment can also be modified according to the use requirements. The applicability changes that can be thought of by those skilled in the art should fall within the scope of protection required by the utility model, such as replacing the DC power supply 13 with a rechargeable lithium battery to increase the portability of the device, which will not be listed here one by one.

[0037] Reference Figure 4 , the control circuit includes a control unit, a first relay JK1, a second relay JK2, a power switch S1, and a control system switch S2. The power supply 13 is connected to the control unit circuit, wherein the positive pole of the power supply 13 is connected in series with the power switch S1 and then connected to the control unit. The power output positive pole of the control unit is connected in series with the control system switch S2 and then connected to the normally open contact NO1 of the first relay JK1 and the normally open contact NO2 of the second relay JK2. The common end of the first relay JK1 and the second relay JK2 are respectively connected to the two ends of the first air pump 2 and the second air pump 3 in parallel. The normally closed contact NC1 of the first relay JK1 is connected to the normally closed contact NC2 of the second relay JK2 and then returns to the power output negative pole of the control unit. In this embodiment, the power supply 13 is a 24V DC power supply, and the output voltage of the control unit is 5V. The control unit in this embodiment adopts a single-chip microcomputer. It should be understood that the control unit can also adopt a control board with low-voltage (5V) level output and IO port output function. Here, there is no absolute limitation on whether the control unit adopts a single-chip microcomputer.

[0038] Reference Figure 2 and Figure 4, the power switch S1 is the control switch of the DC power supply 13, the control system switch S2 is the main switch of the control circuit set on the control housing 11, M1 in the control circuit diagram refers to the first air pump 2, M2 refers to the second air pump 3, and the two dotted boxes are marked with two channels of the relay, which are defined as follows: the left side is defined as the first channel, and the right side is defined as the second channel. The normally open contact of the first channel is NO1, the normally closed contact is NO2, the common terminal is COM1, the control coil is JK1, and the switch connected to the IO port of the single-chip microcomputer is OUT1; the normally open contact of the second channel is NO2, the normally closed contact is NO2, the common terminal is COM2, the control coil is JK2, and the switch connected to the IO port of the single-chip microcomputer is OUT2. The switch OUT1 of the first relay JK1 is connected to the IO port of the control unit, and the switch OUT2 of the second relay JK2 is connected to the IO port of the control unit.

[0039] like Figure 5 As shown, when simulating the human body's inhalation state, the first air pump 2 and the second air pump 3 both rotate forward, the OUT1 port of the control unit outputs a high level, the OUT2 port outputs a low level, the coil of the first relay JK1 is energized, and the common terminal COM1 of the first relay JK1 is switched from normally closed to normally open and connected to the normally open contact NO1, the coil of the second relay JK2 maintains the original state, and the common terminal COM2 of the second relay JK2 maintains a normally closed connection with the normally closed contact NC2. At this time, the current direction of the system is from left to right.

[0040] like Figure 6 As shown, when simulating the breathing state of the human body, the first air pump 2 and the second air pump 3 are both reversed, the OUT1 port of the control unit outputs a low level, the OUT2 port outputs a high level, the coil of the second relay JK2 is energized, and the common terminal COM2 of the second relay JK2 is switched from normally closed to normally open and connected to NO2, the coil of the first relay JK1 maintains the original state, and the common terminal COM1 of the first relay JK1 maintains a normally closed connection with the normally closed contact NC1. At this time, the current direction of the system is from right to left.

[0041] Reference Figures 1 to 6The working principle of the breathing simulation device of the utility model is as follows: the valve on the CO2 cylinder 41 is opened, and CO2 is introduced into the head model 5 through the three-way joint 6 at a certain concentration. When the first air pump 2 and the second air pump 3 inhale at the same time, CO2 will not be introduced into the head model 5 through the first air supply pipe 7, but will be directly sucked away from the air outlet by the first air pump 2. Even if the CO2 gas flow rate is high and part of the gas overflows to the head model 5, the second air pump 3 will suck the overflowed CO2 out of the head model 5 because the second air pump 3 is in the inhalation state and the distance between the first air supply pipe 7 and the second air supply pipe 8 is close. When the first air pump 2 and the second air pump 3 exhale at the same time, the CO2 introduced by the three-way joint 6 can be introduced into the head model 5, and after the gas enters the main airway of the head model 5, the first air pump 2 and the second air pump 3 exhale together, so that the gas can reach the oral cavity, nasal cavity and other distal parts, meeting the requirements of simulated breathing.

[0042] like Figure 7 As shown, the operation process of the above-mentioned breathing simulation device is as follows:

[0043] Step 1: Connect the first air supply tube 7 and the second air supply tube 8 to the bronchial terminal of the head model 5;

[0044] Step 2: Check whether the sealing is complete. If the sealing is poor, check and adjust the connection joints. Specifically, replace the air supply pipe and the three-way joint 6 with different diameters, and use sealing tape and other connection measures to ensure that there is no leakage;

[0045] Step 3: Start the power switch to power the single-chip microcomputer, and turn on the control system switch to power on the relay, the first air pump 2, and the second air pump 3;

[0046] Step 4: Open the valve of the CO2 gas cylinder 41 and adjust the CO2 output flow rate until the output waveform meets the requirements;

[0047] Step 5: After the experiment is completed, close the valve of the gas cylinder 41, turn off all power supplies, disconnect the air tube from the head model 5, and store it.

[0048] The breathing simulation device has a simple overall structure and is easy to control, and can be widely used in different types of simulation robots.

[0049] It should be understood that the specific embodiments described above are only used to explain the present invention, and are not used to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A breathing simulation device for an airway model, characterized in that: include: Control mechanism (1); A first air pump (2) and a second air pump (3) mounted on the control mechanism (1); A CO2 gas cylinder assembly (4) is connected to the first gas pump (2) via a three-way joint (6) pipeline; The head model (5) is connected to the three-way joint (6) via a first air supply pipe (7), and the second air pump (3) is connected to the head model (5) via a second air supply pipe (8); wherein, during the simulation process, the CO2 cylinder assembly (4) is in a CO2 release mode, and when simulating the exhalation state of the human body, the first air pump (2) and the second air pump (3) are both in an exhalation state; when simulating the inhalation state of the human body, the first air pump (2) and the second air pump (3) are both in an inhalation state.

2. The breathing simulation device for an airway model according to claim 1, characterized in that: The control mechanism (1) comprises a control housing (11), a mounting hole (12) provided on the control housing (11) for mounting a first air pump (2) and a second air pump (3), a control circuit arranged in the control housing (11) for controlling the first air pump (2) and the second air pump (3) to change their states, and a power supply (13) for providing electrical energy to the control circuit.

3. A breathing simulation device for an airway model according to claim 2, characterized in that: The control circuit includes a control unit, a first relay JK1, a second relay JK2, a power switch S1, and a control system switch S2; The power supply (13) is connected to the control unit, wherein the positive electrode of the power supply (13) is connected in series with the power switch S1 and then connected to the control unit; the positive power output port of the control unit is connected in series with the control system switch S2 and then connected to the normally open contact NO1 of the first relay JK1 and the normally open contact NO2 of the second relay JK2; the common end of the first relay JK1 and the second relay JK2 are respectively connected to the two ends of the first air pump (2) and the second air pump (3) after being connected in parallel; the normally closed contact NC1 of the first relay JK1 is connected to the normally closed contact NC2 of the second relay JK2 and then returns to the negative power output port of the control unit.

4. The breathing simulation device for an airway model according to claim 3, characterized in that: The power supply (13) is a 24V DC power supply, and the control unit outputs a 5V voltage.

5. The breathing simulation device for an airway model according to claim 3, characterized in that: The switch OUT1 of the first relay JK1 is connected to the IO port of the control unit; the switch OUT2 of the second relay JK2 is connected to the IO port of the control unit.

6. A breathing simulation device for an airway model according to claim 5, characterized in that: When simulating the human body's inhalation state, the first air pump (2) and the second air pump (3) both rotate forward, the OUT1 port of the control unit outputs a high level, the OUT2 port outputs a low level, the coil of the first relay JK1 is energized, the common terminal COM1 of the first relay JK1 is switched from normally closed to normally open and then connected to the normally open contact NO1, the coil of the second relay JK2 maintains its original state, and the common terminal COM2 of the second relay JK2 maintains a normally closed connection with the normally closed contact NC2.

7. The breathing simulation device for an airway model according to claim 5, characterized in that: When simulating the breathing state of a human body, the first air pump (2) and the second air pump (3) are both reversed, the OUT1 port of the control unit outputs a low level, the OUT2 port outputs a high level, the coil of the second relay JK2 is energized, the common terminal COM2 of the second relay JK2 is switched from normally closed to normally open and then connected to NO2, the coil of the first relay JK1 maintains the original state, and the common terminal COM1 of the first relay JK1 maintains a normally closed connection with the normally closed contact NC1.

8. The breathing simulation device for an airway model according to claim 3, characterized in that: The control housing (11) is provided with a wire threading hole, and the power source (13) is connected to the control unit via a wire (14).

9. A breathing simulation device for an airway model according to any one of claims 1 to 8, characterized in that: The CO2 gas cylinder assembly (4) comprises a CO2 gas cylinder (41) for loading CO2 gas, a CO2 gas pipe (42) connected to the three-way connector (6), and a gas valve (43) arranged on the CO2 gas cylinder (41).

10. The breathing simulation device for an airway model according to claim 1, characterized in that: The head model (5) comprises a model shell (51) and a model inner cavity (52) arranged inside the model shell (51); the ends of the first air supply pipe (7) and the second air supply pipe (8) away from the control mechanism (1) are both in air communication with the model inner cavity (52).

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