Mask-type breath collection device and method

Abstract

The present invention discloses a mask-type exhalation collection device, which belongs to the technical field of medical devices. The mask-type exhalation collection device comprises: a mask provided with an exhalation hole and an air inlet hole; a first three-way valve, the exhalation hole is connected to the input end of the first three-way valve, and the exhaled gas is separated by the first three-way valve; a second three-way valve, an output end of the first three-way valve is connected to the input end of the second three-way valve, and the alveolar gas is transported by the second three-way valve; a first gas collection mechanism, an output end of the second three-way valve is connected to the input end of the first gas collection mechanism; a second air pump; a third three-way valve, another output end of the second three-way valve is connected to the input end of the third three-way valve, and an output end of the third three-way valve is connected to the air suction port of the second air pump. The patent of the present invention proposes a mask-type exhalation collection device to facilitate the collection of exhalation of infants or unconscious patients.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a mask-type breath collection device and a method thereof. Background Art

[0002] The human circulatory system exchanges substances through the alveoli and respiratory system. Therefore, by detecting the human respiratory gas, the internal environment of the human body can be indirectly detected. Compared with traditional diagnostic methods, respiratory diagnosis is faster, more convenient, non-invasive, and has fewer side effects. Therefore, respiratory testing has received more and more attention. At present, respiratory diagnosis has been widely used in clinical applications for the detection of Helicobacter pylori.

[0003] Existing breath collection devices basically collect exhaled gas by blowing air from the mouth when the person is awake, but this method is difficult to effectively collect exhaled gas for unconscious patients or infants. Summary of the invention

[0004] The present invention provides a mask-type breath collection device and method thereof, aiming to solve the problem in the prior art that it is difficult to effectively collect breath from unconscious patients or infants.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A mask-type breath collection device, comprising:

[0007] A mask with exhalation holes and inlet holes;

[0008] A first three-way valve, wherein the exhalation hole is connected to an input end of the first three-way valve, and the exhaled gas is separated by the first three-way valve;

[0009] a second three-way valve, wherein an output end of the first three-way valve is connected to an input end of the second three-way valve, and alveolar gas is transported through the second three-way valve;

[0010] a first gas collecting mechanism, wherein an output end of the second three-way valve is connected to an input end of the first gas collecting mechanism;

[0011] a third three-way valve and a second air pump, wherein the other output end of the second three-way valve is connected to the input end of the third three-way valve, one output end of the third three-way valve is connected to the air suction port of the second air pump, and the residual gas or alveolar gas at the other output end of the second three-way valve is discharged through the second air pump; and

[0012] The other output end of the third three-way valve is connected to the air inlet of the gas detection device, and the alveolar gas collected in the first gas collection mechanism is discharged into the gas detection device through the second three-way valve and the third three-way valve. The present invention patent proposes a mask-type exhalation collection device to facilitate the collection of exhalation of infants or unconscious patients.

[0013] Preferably, it further comprises a first air pump disposed between the exhalation hole and the first three-way valve, the exhalation hole is connected to the air suction port of the first air pump, and the exhaust port of the first air pump is connected to the input end of the first three-way valve.

[0014] Preferably, it also includes a simple filtering device arranged between the exhalation hole and the first three-way valve.

[0015] Preferably, the other output end of the first three-way valve is connected to the atmosphere or a second gas collecting mechanism.

[0016] Preferably, the first gas collecting mechanism is an air chamber or an air bag, and the air chamber is provided with a first barometer, and the second gas collecting mechanism is a small air chamber or an air bag, and the small air chamber is provided with a second barometer.

[0017] Preferably, the exhalation hole is provided with an outer one-way flap or an outer one-way ventilation valve, and the air inlet hole is provided with an inner one-way flap or an inner one-way ventilation valve.

[0018] Preferably, it also includes a single chip microcomputer, which is electrically connected to the first three-way valve, the first air pump, the second three-way valve, the third three-way valve and the second air pump respectively to achieve automatic control, and an electronic control circuit is arranged inside the single chip microcomputer.

[0019] Preferably, the air inlet is connected to the atmosphere or an oxygen cylinder.

[0020] Preferably, it also includes:

[0021] A filter screen cover, wherein the filter screen cover is arranged in a pipe connecting the air inlet to the atmosphere or the oxygen cylinder;

[0022] An elastic pad, the elastic pad being arranged at a position where the inner side of the mask fits the face; and

[0023] A rubber strap is detachably connected to the mask via a snap connector.

[0024] The mask-type breath collection method comprises the following steps:

[0025] S1, gas separation: the first three-way valve is controlled by the single chip microcomputer to continuously cut off the power, the exhaled gas enters the first three-way valve, and then is transported to the atmosphere or the second collection mechanism through the other output end of the first three-way valve, and the residual gas in the first three-way valve, the oral gas and the tracheal gas are discharged;

[0026] S2, collecting alveolar gas: the first three-way valve is powered on by the single chip microcomputer, and the second three-way valve is powered off at the same time, and the alveolar gas is transported to the second three-way valve through an output end of the first three-way valve, and then transported to the first gas collection mechanism through an output end of the second three-way valve;

[0027] S3, exhausting the residual gas at the other output end of the second three-way valve: continuously starting the second air pump through the single chip microcomputer, and simultaneously controlling the third three-way valve to be powered off, the second air pump extracts the residual gas at the other output end of the second three-way valve and discharges it into the atmosphere, and then shuts down the second air pump;

[0028] S4, gas detection: the second three-way valve and the third three-way valve are powered on by the single chip microcomputer, and the alveolar gas collected in the first gas collection mechanism is transported to the gas detection device through the second three-way valve and the third three-way valve for gas detection;

[0029] S5. Exhaust the remaining gas: After the gas detection is completed, the single chip microcomputer controls the third three-way valve to cut off the power, and at the same time starts the second air pump to discharge the remaining alveolar gas collected in the first gas collection mechanism into the atmosphere, and finally turns off the second air pump and controls the second three-way valve to cut off the power.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] In the present solution, an outer one-way valve or an outer one-way ventilation valve and an inner one-way valve or an inner one-way ventilation valve are used to control exhalation and inhalation. When the mask is worn on the face, the pressure inside the mask decreases during inhalation, the inner one-way valve or the inner one-way ventilation valve opens, and the outer one-way valve or the outer one-way ventilation valve closes. At this time, gas enters the mask from the air; when exhaling, the pressure inside the mask increases, the outer one-way valve or the outer one-way ventilation valve opens, and the inner one-way valve or the inner one-way ventilation valve closes at this time, and gas is discharged from the outer one-way valve or the outer one-way ventilation valve and enters the first three-way valve. At this time, the direction of gas flow is controlled by gradually energizing the multiple three-way valves respectively, so that the gas can enter the gas detection device for detection, so as to realize automatic collection of gas exhaled by the human body. The present device has a simple structure and is easy to operate. It can also achieve effective gas collection for unconscious patients or infants and young children, and is extremely practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a first principle block diagram of the mask-type breath collection device of the present invention;

[0033] Figure 2 It is a first stereoscopic view of the mask-type breath collection device of the present invention;

[0034] Figure 3It is a second stereoscopic view of the mask-type breath collection device of the present invention;

[0035] Figure 4 It is a third stereoscopic view of the mask-type breath collection device of the present invention;

[0036] Figure 5 It is a second principle block diagram of the mask-type breath collection device of the present invention;

[0037] Figure 6 This is the fourth stereoscopic view of the mask-type breath collection device of the present invention.

[0038] Figure numerals: 1. mask; 2. simple filtering device; 3. first three-way valve; 4. first air pump; 5. atmospheric chamber; 6. first barometer; 7. second three-way valve; 8. third three-way valve; 9. second air pump; 10. gas detection device; 11. rubber band; 12. filter mesh cover; 13. exhalation hole; 14. air inlet hole; 15. second barometer; 16. small air chamber; 17. air bag. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] Embodiment 1, refer to Figure 1-6 : A mask-type breath collection device, comprising:

[0041] A mask 1 is provided with an exhalation hole 13 and an air inlet 14, an outer one-way flap or an outer one-way ventilation valve is fixedly provided on the exhalation hole 13, and the outer one-way flap or the outer one-way ventilation valve is arranged on the outer surface of the mask 1, and an inner one-way flap or an inner one-way ventilation valve is fixedly provided on the air inlet 14, and the inner one-way flap or the inner one-way ventilation valve is arranged on the inner surface of the mask 1, and the air inlet 14 is connected to the atmosphere or an oxygen cylinder. Preferably, a filter screen 12 is arranged in the pipe connecting the air inlet 14 to the atmosphere or the oxygen cylinder, and a rubber band 11 is arranged on the outer surface of the mask 1. Specifically, the rubber band 11 is detachably connected to the mask 1 through a snap connector, and an elastic pad (not shown in the figure) is arranged at the part where the mask 1 fits the face;

[0042] In this embodiment: by setting the rubber strap 11 and the elastic pad, the mask 1 can be quickly worn on the face of the patient or infant, and a closed space can be effectively formed. When the patient or infant inhales, the pressure in the mask 1 decreases, the inner one-way flap or the inner one-way ventilation valve opens, and the outer one-way flap or the outer one-way ventilation valve closes. At this time, the gas enters the mask 1 from the atmosphere or the oxygen cylinder through the air inlet 14; when the patient or infant exhales, the pressure in the mask 1 increases, the outer one-way flap or the outer one-way ventilation valve opens, the inner one-way flap or the inner one-way ventilation valve closes, and the exhaled gas is output through the exhalation hole 13. It should be noted that the air inlet 14 is connected to the atmosphere or the oxygen cylinder by a pipeline. Preferably, the filter mesh cover 12 arranged in the pipeline makes the air quality inhaled by the patient or infant better.

[0043] The first three-way valve 3, the exhalation hole 13 is connected to the input end of the first three-way valve 3, and the exhaled gas is separated by the first three-way valve 3;

[0044] In this embodiment: the setting of the first three-way valve 3 is necessary. When the patient or infant exhales, the first thing that comes out is oral gas, followed by tracheal gas, and finally alveolar gas. Since the first three-way valve 3 contains residual gas in the initial state, and the present invention needs to detect the alveolar gas, the first three-way valve 3 can discharge the residual gas contained therein and the oral gas and tracheal gas in the initial state when it is powered off, and then transport the alveolar gas when it is powered on, and finally realize the separation of oral gas, tracheal gas and alveolar gas. Specifically, the first three-way valve 3 should be powered off first, and the residual gas in the first three-way valve 3 can be directly discharged through the other output end of the first three-way valve 3 along with the oral gas and tracheal gas; it should be explained that the exhalation hole 13 and the first three-way valve 3 can be connected by a pipeline. Preferably, a simple filtering device 2 can be provided in the pipeline, so that the exhaled gas can be simply filtered, for example, saliva and other impurities contained in the exhaled gas can be filtered. Preferably, the simple filtering device 2 can select an activated carbon filter;

[0045] A second three-way valve 7, an output end of the first three-way valve 3 is connected to an input end of the second three-way valve 7, the exhaled gas is transported through the second three-way valve 7, and the other output end of the first three-way valve 3 is connected to the atmosphere or a second gas collecting mechanism, the second gas collecting mechanism is a small air chamber 16 or an air bag 17, and a second barometer 15 is provided on the small air chamber 16;

[0046] In this embodiment: the residual gas in the first three-way valve 3, along with the oral cavity gas and the tracheal gas, can be directly discharged into the atmosphere through the other output end of the first three-way valve 3. As a preferred embodiment of the present invention, the residual gas, oral cavity gas and tracheal gas in the first three-way valve 3 can also be collected in the second gas collecting mechanism, and the air pressure can be detected by the second barometer 15, so as to calculate the volume of the collected gas. When the second gas collecting mechanism is a small air chamber 16, the second barometer 15 should be arranged on the surface of the small air chamber 16, and its detection head should penetrate the small air chamber 16 and extend inwardly; when the second gas collecting mechanism is an air bag 17, it is not appropriate to arrange the second barometer 15 at this time, and the air bag 17 can be completely immersed in water, and the volume of the gas collected by the air bag 17 is calculated according to the change in the water volume;

[0047] The first gas collecting mechanism, an output end of the second three-way valve 7 is connected to the input end of the first gas collecting mechanism, the first gas collecting mechanism is the atmosphere chamber 5 or the air bag 17, when the first gas collecting mechanism is the atmosphere chamber 5, the atmosphere chamber 5 is provided with a first barometer 6; preferably, the first gas collecting mechanism is detachable.

[0048] In this embodiment: the setting of the first gas collection mechanism is necessary, because the airflow exhaled by the patient or infant may be unstable, direct testing with the exhaled gas will affect the test results, and the first gas collection mechanism can be used for offline testing, reducing the time for testing patients or infants. When the first gas collection mechanism is set as the atmospheric chamber 5, a first barometer 6 should be set on the surface of the atmospheric chamber 5. Specifically, the first barometer 6 should be set on the surface of the atmospheric chamber 5, and its detection head should penetrate the atmospheric chamber 5 and extend inward, so as to realize the detection of air pressure. When the air pressure in the atmospheric chamber 5 reaches the test standard, the mask 1 should be removed at this time to stop the collection of exhaled gas; when the first gas collection mechanism is set as an air bag 17, the air bag 17 can be directly immersed in water, and the change in volume of the air bag 17 is calculated according to the change in water volume. It should be explained that the first gas collection mechanism and the second collection mechanism should use two different air bags 17. Finally, it should be explained that the initial state of the first gas collection mechanism should preferably be set to a vacuum state, which can effectively reduce the detection error;

[0049] The third three-way valve 8, the other output end of the second three-way valve 7 is connected to the input end of the third three-way valve 8, one output end of the third three-way valve 8 is connected to the suction port of the second air pump 9, and the residual gas and or alveolar gas at the other output end of the second three-way valve 7 are discharged through the second air pump 9;

[0050] In this embodiment: the third three-way valve 8 and the second air pump 9 are necessary. Since there will be residual gas in the third three-way valve 8 and the second three-way valve 7 initially, the residual gas should be pumped out by the second air pump 9, thereby effectively improving the subsequent gas detection results to reduce the detection error. After all the detections are completed, the alveolar gas collected in the first gas collection mechanism can eventually be directly discharged into the atmosphere through the exhaust port of the second air pump 9;

[0051] The gas detection device 10, the other output end of the third three-way valve 8 is connected to the air inlet of the gas detection device 10, and the alveolar gas collected in the first gas collection mechanism is discharged into the gas detection device 10 through the second three-way valve 7 and the third three-way valve 8;

[0052] In this embodiment, the gas detection device 10 detects alveolar gas. It should be noted that how the gas detection device 10 detects alveolar gas is common knowledge among those skilled in the art, and will not be described in detail.

[0053] A single chip microcomputer, the single chip microcomputer is electrically connected to the first air pump 4, the first three-way valve 3, the second three-way valve 7, the third three-way valve 8 and the second air pump 9 respectively to realize automatic control, and an electronic control circuit is arranged in the single chip microcomputer;

[0054] In this embodiment: the present invention realizes corresponding automatic control of the first air pump 4, the first three-way valve 3, the second three-way valve 7, the third three-way valve 8 and the second air pump 9 through a single chip microcomputer and a corresponding electronic control circuit. Based on the idea of ​​the present invention, those skilled in the art can easily set up the corresponding electronic control circuit. In other words, how to realize the automatic control above belongs to the common knowledge of those skilled in the art, so it will not be repeated here.

[0055] Example 2, refer to Figure 1-4 In this embodiment, a first air pump 4 is provided on the basis of the first embodiment. For infants or unconscious patients, in order not to affect their exhalation, the first air pump 4 should preferably be provided. Specifically, the exhalation hole 13 is connected to the air suction port of the first air pump 4 through a pipeline, and the exhaust port of the first air pump 4 is connected to the input end of the first three-way valve 3 through a pipeline. It should be noted that if a simple filtering device 2 is required to be provided in this embodiment, the simple filtering device 2 should be provided in the pipeline connecting the exhalation hole 13 and the first air pump 4.

[0056] The mask-type breath collection method comprises the following steps:

[0057] S1, gas separation: the first three-way valve 3 is continuously powered off by controlling the single chip microcomputer, the exhaled gas enters the first three-way valve 3, and then is transported to the atmosphere or the second collecting mechanism through the other output end of the first three-way valve 3, and the residual gas, oral gas and tracheal gas in the first three-way valve 3 are discharged;

[0058] In step S1: the exhaled gas includes the initial exhaled oral gas, the subsequent exhaled tracheal gas and the final alveolar gas, which are referred to herein as oral gas, tracheal gas and alveolar gas. In the present invention: the gas detection device 10 detects the alveolar gas, so it is necessary to discharge the residual gas, oral gas and tracheal gas in the first three-way valve 3 to improve the accuracy of the detection result, and at the same time obtain the alveolar gas to be detected. In the specific operation process, the power-off time of the first three-way valve 3 can be set according to the actual situation to ensure that the gas passing through the first three-way valve 3 after power is turned on is alveolar gas;

[0059] S2, collecting alveolar gas: the first three-way valve 3 is energized by the single chip microcomputer, and the second three-way valve 7 is simultaneously energized, and the alveolar gas is transported to the second three-way valve 7 through an output end of the first three-way valve 3, and then transported to the first gas collection mechanism through an output end of the second three-way valve 7;

[0060] It should be noted that in step S2: the pipeline connecting the second three-way valve 7 to the first three-way valve 3 and the pipeline connecting the second three-way valve 7 to the first gas collecting mechanism should be in a vacuum state, so that the alveolar gas discharged by the first three-way valve 3 does not contain other gases, thereby obtaining pure alveolar gas and improving the accuracy of detection; and in the specific operation process, the power-on time of the first three-way valve 3 can be set according to the actual situation to ensure that the first gas collecting mechanism collects an appropriate amount of alveolar gas;

[0061] S3, discharge the residual gas at the other output end of the second three-way valve 7: continuously start the second air pump 9 through the single chip microcomputer, and at the same time control the third three-way valve 8 to be powered off, the second air pump 9 extracts the residual gas at the other output end of the second three-way valve 7 and discharges it into the atmosphere, and then turns off the second air pump 9;

[0062] It should be noted that in step S3: during the specific operation, the power-off time of the second three-way valve 7 can be set according to the actual situation to ensure that the residual gas at the other output end of the second three-way valve 7 is discharged without affecting the detection;

[0063] S4, gas detection: the second three-way valve 7 and the third three-way valve 8 are energized by the single chip microcomputer, and the alveolar gas collected in the first gas collection mechanism is transported to the gas detection device 10 through the second three-way valve 7 and the third three-way valve 8 for gas detection;

[0064] S5, exhausting the remaining gas: after the gas detection is completed, the single chip microcomputer controls the third three-way valve 8 to cut off the power, and at the same time starts the second air pump 9 to discharge the remaining alveolar gas in the first gas collection mechanism into the atmosphere, and finally closes the second air pump 9 and controls the second three-way valve 7 to cut off the power;

[0065] It should be noted that the three-way valve has only two gas paths. The gas paths for powering on and off the three-way valve are as follows: Figure 1 As shown, the gas can only be switched between these two gas paths.

[0066] Finally, it should be noted that the detection in the present invention is limited to one exhalation, and multiple exhalations cannot be detected. Each exhalation will produce oral gas, tracheal gas and alveolar gas. If the gas exhaled multiple times is detected, it will cause the mixture of oral gas, tracheal gas and alveolar gas, which will affect the detection result.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mask-type breath collection device, characterized in that: include: A mask with exhalation holes and inlet holes; a first three-way valve, wherein the exhalation hole is connected to the input end of the first three-way valve, and the exhaled gas is separated by the first three-way valve; the exhaled gas includes the initial exhaled oral gas, the subsequent exhaled tracheal gas and the final alveolar gas. When the first three-way valve is powered off, the residual gas contained in the first three-way valve as well as the oral gas and the tracheal gas are discharged, and when the first three-way valve is powered on, the alveolar gas is transported to separate the oral gas, the tracheal gas and the alveolar gas; a second three-way valve, wherein an output end of the first three-way valve is connected to an input end of the second three-way valve, and alveolar gas is transported through the second three-way valve; a first gas collecting mechanism, wherein an output end of the second three-way valve is connected to an input end of the first gas collecting mechanism; a third three-way valve and a second air pump, wherein the other output end of the second three-way valve is connected to the input end of the third three-way valve, one output end of the third three-way valve is connected to the air suction port of the second air pump, and the residual gas or alveolar gas at the other output end of the second three-way valve is discharged through the second air pump; as well as A gas detection device, wherein the other output end of the third three-way valve is connected to the gas inlet of the gas detection device, and the alveolar gas collected in the first gas collection mechanism is discharged into the gas detection device through the second three-way valve and the third three-way valve; A first air pump is disposed between the exhalation hole and the first three-way valve, wherein the exhalation hole is connected to an air suction port of the first air pump, and an exhaust port of the first air pump is connected to an input end of the first three-way valve; A simple filtering device is arranged between the exhalation hole and the first air pump; the other output end of the first three-way valve is connected to the atmosphere or the second gas collecting mechanism; the first gas collecting mechanism is an atmospheric chamber or an air bag, and the atmospheric chamber is provided with a first barometer, and the second gas collecting mechanism is a small air chamber or an air bag, and the small air chamber is provided with a second barometer; the exhalation hole is provided with an external one-way vent valve, and the air inlet hole is provided with an internal one-way vent valve; A single chip microcomputer, wherein the single chip microcomputer is electrically connected to the first three-way valve, the first air pump, the second three-way valve, the third three-way valve and the second air pump respectively to realize automatic control, and an electronic control circuit is arranged in the single chip microcomputer; the air inlet is connected to the atmosphere or an oxygen cylinder; A filter screen cover, wherein the filter screen cover is arranged in a pipe connecting the air inlet to the atmosphere or the oxygen cylinder; An elastic pad, the elastic pad being arranged at a position where the inner side of the mask fits the face; and A rubber strap is detachably connected to the mask via a snap connector.

2. A method for collecting breath through a mask using the breath collection device through a mask as claimed in claim 1, comprising the following steps: S1, gas separation: the first three-way valve is powered off by the single chip microcomputer, the exhaled gas enters the first three-way valve, and then is transported to the atmosphere or the second gas collection mechanism through the other output end of the first three-way valve, and the residual gas, oral gas and tracheal gas in the first three-way valve are discharged; S2, collecting alveolar gas: the first three-way valve is powered on by the single chip microcomputer, and the second three-way valve is powered off at the same time, the alveolar gas is transported to the second three-way valve through an output end of the first three-way valve, and then transported to the first gas collection mechanism through an output end of the second three-way valve; the pipeline connecting the second three-way valve to the first three-way valve and the pipeline connecting the second three-way valve to the first gas collection mechanism are in a vacuum state; S3, exhausting the residual gas at the other output end of the second three-way valve: continuously starting the second air pump through the single chip control, and simultaneously controlling the third three-way valve to be powered off, the second air pump extracts the residual gas at the other output end of the second three-way valve and discharges it into the atmosphere, and then shuts down the second air pump; S4, gas detection: the second three-way valve and the third three-way valve are powered on by the single chip microcomputer, and the alveolar gas collected in the first gas collection mechanism is transported to the gas detection device through the second three-way valve and the third three-way valve for gas detection; S5. Exhaust the remaining gas: After the gas detection is completed, the single chip microcomputer controls the third three-way valve to cut off the power, and at the same time starts the second air pump to discharge the remaining alveolar gas collected in the first gas collection mechanism into the atmosphere, and finally closes the second air pump and controls the second three-way valve to cut off the power.

Images