CN109481808B - a rebreathing device - Google Patents
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- CN109481808B CN109481808B CN201910026134.3A CN201910026134A CN109481808B CN 109481808 B CN109481808 B CN 109481808B CN 201910026134 A CN201910026134 A CN 201910026134A CN 109481808 B CN109481808 B CN 109481808B
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- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 75
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 39
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 39
- 208000008784 apnea Diseases 0.000 claims description 15
- 230000003434 inspiratory effect Effects 0.000 claims description 11
- 230000000241 respiratory effect Effects 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 206010041235 Snoring Diseases 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 230000003252 repetitive effect Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims 1
- 201000002859 sleep apnea Diseases 0.000 abstract description 12
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- 241000894006 Bacteria Species 0.000 description 1
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- 241000282412 Homo Species 0.000 description 1
- 206010020591 Hypercapnia Diseases 0.000 description 1
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- 238000011513 continuous positive airway pressure therapy Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0045—Means for re-breathing exhaled gases, e.g. for hyperventilation treatment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/201—Controlled valves
- A61M16/202—Controlled valves electrically actuated
- A61M16/203—Proportional
- A61M16/204—Proportional used for inhalation control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2230/00—Measuring parameters of the user
- A61M2230/40—Respiratory characteristics
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- Heart & Thoracic Surgery (AREA)
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Abstract
本发明公开一种重复呼吸装置。包括：呼吸装置、气体连接管、进气管、储气箱、调节装置和主控制器；呼吸装置罩在用户的面部，用于罩住用户的口鼻部位；呼吸装置通过气体连接管连接进气管的第一端；进气管的第二端设置有储气口和直通口两个通气口；进气管通过直通口通至重复呼吸装置的外部空气；进气管通过储气口通至储气箱内；储气箱用于储存用户呼出的气体；调节装置位于进气管的第二端；调节装置接收主控制器的调节信号，并根据主控制器的调节信号调节储气口和直通口的开度大小。本发明利用自身的重复呼吸来提高患者本身的二氧化碳水平，在睡眠状态下有效改善患者呼吸状态，消除睡眠呼吸暂停，提高用户的舒适度。
The invention discloses a rebreathing device. Including: breathing device, gas connection pipe, air intake pipe, air storage tank, adjustment device and main controller; the breathing device is covered on the user's face to cover the user's mouth and nose; the breathing device is connected to the air intake pipe through the gas connection pipe The second end of the air intake pipe is provided with two ventilation ports, an air storage port and a straight-through port; the air-intake pipe leads to the external air of the rebreathing device through the straight-through port; the intake pipe leads to the air storage tank through the air-storage port; The air box is used to store the gas exhaled by the user; the adjustment device is located at the second end of the air intake pipe; the adjustment device receives the adjustment signal from the main controller, and adjusts the opening of the air storage port and the straight port according to the adjustment signal of the main controller. The invention utilizes its own repeated breathing to improve the carbon dioxide level of the patient itself, effectively improves the breathing state of the patient in the sleep state, eliminates sleep apnea, and improves the comfort of the user.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a repeated breathing device.
Background
Sleep Apnea Syndrome (SAS) is a common sleep respiratory disease, and according to the recent global epidemiological research, 15-20% of adults and 5-10% of children suffer from sleep respiratory disorder diseases. The incidence rate of SAS is about 7% according to statistics, and the incidence rate of SAS is increased year by year along with the aging of population and the increasing degree of obesity. Repeated apnea can cause hypoxia and hypercapnia at night, and can lead to hypertension, coronary heart disease, diabetes, cerebrovascular disease and other complications and traffic accidents, and even sudden death at night. SAS has become a major disease threatening public health of humans. However, there is no clinically good treatment other than Continuous Positive Airway Pressure (CPAP) and partial surgical treatment.
Continuous Positive Airway Pressure (CPAP) therapy: SAS patients have been treated since the early 80 s of the 20 th century, but the curative effect is remarkable, but the comfort is poor, long-term wearing is required every night, the compliance is poor, and 40-50% of patients who refuse to accept CPAP treatment are in the market. And with long-term clinical observation, more and more side effects are also discovered.
Surgical treatment: uvula-palatopharynoplasty (UPPP) is the current major surgical procedure for patients with bony or soft tissue stenosis and collapse due to local anatomical factors. But the trauma is large, the perioperative risk is high, the clinical curative effect of part of patients is unsatisfactory, and the recurrence rate is high.
Disclosure of Invention
The invention aims to provide a rebreathing device which utilizes the self repeated respiration to improve the carbon dioxide level of a patient, effectively improves the respiration state of an SAS patient in a sleep state, eliminates sleep apnea and improves the comfort level of the user.
In order to achieve the purpose, the invention provides the following scheme:
a rebreathing device comprising: the device comprises a breathing device, a gas connecting pipe, a gas inlet pipe, a gas storage tank, an adjusting device and a main controller;
the breathing device is covered on the face of a user and is used for covering the mouth and nose parts of the user; the breathing device is connected with the first end of the air inlet pipe through the air connecting pipe;
the second end of the air inlet pipe is provided with an air storage opening and a straight opening; the air inlet pipe is communicated with the external air of the repeated breathing device through the straight opening; the air inlet pipe is communicated into the air storage box through the air storage port; the gas storage tank is used for storing gas exhaled by the user;
the adjusting device is positioned at the second end of the air inlet pipe; the adjusting device receives an adjusting signal of the main controller and adjusts the opening degree of the air storage port and the opening degree of the straight port according to the adjusting signal of the main controller.
Optionally, the rebreathing apparatus further comprises: a flow rate sensor and a carbon dioxide analysis device; the flow velocity sensor is fixed at the first end of the air inlet pipe and used for measuring the flow velocity of the gas in the air inlet pipe; and the acquisition port of the carbon dioxide analysis device is fixed at the first end of the air inlet pipe and is used for analyzing the concentration of carbon dioxide in the air inlet pipe.
Optionally, the main controller determines a respiratory state of the user according to the data of the flow rate sensor and the data of the carbon dioxide analysis device, and further generates an adjustment signal for adjusting the opening degree of the air storage port and the through port; the respiratory state includes: a flow restricted state, an apnea state, a circuit shedding state, and an stale breathing state.
Optionally, when a platform or snore vibration occurs in an inspiration oscillogram formed by inspiration flow rate data measured by the flow rate sensor, the airflow limitation state is determined;
when a respiration alternation oscillogram formed by the expiratory flow rate data and the inspiratory flow rate data measured by the flow rate sensor is interrupted for more than N seconds and the respiration alternation oscillogram appears again within N minutes, determining that the respiration alternation oscillogram is in an apnea state; wherein N is greater than 5 and N is greater than 1;
when the expiratory and inspiratory flow rate data measured by the flow rate sensor lasts for more than M minutes and is zero, determining that the data is in a pipeline falling state; wherein M is greater than 1 and M is greater than or equal to N;
and when the expiratory flow rate data and the inspiratory flow rate data measured by the flow rate sensor gradually decrease after increasing, or the carbon dioxide data measured by the carbon dioxide analysis device gradually decreases after increasing, determining that the respiration state is the stale respiration state.
Optionally, when the breathing state of the user is a flow-limited state and T times occur in one minute or an apnea state and I times occur in one minute, the main controller generates a first adjustment signal for increasing the opening degree of the gas storage port and decreasing the opening degree of the through port, where T is greater than or equal to 1, I is greater than or equal to 1, and T is greater than or equal to I;
when the breathing state of the user is a stale breathing state, the main controller generates a second adjusting signal for gradually increasing the opening degree of the air storage port when the flow rate data measured by the flow rate sensor is gradually increased or the carbon dioxide data measured by the carbon dioxide analysis device is gradually increased; when the flow rate data measured by the flow rate sensor is faded down or the carbon dioxide data measured by the carbon dioxide analysis device is faded down, the main controller generates a third adjusting signal for gradually reducing the opening of the gas storage port;
and when the breathing state of the user is not the airflow limited state, the apnea state and the resuscitation state within P minutes, the main controller generates a fourth adjusting signal for reducing the opening degree of the air storage opening and increasing the opening degree of the straight opening, wherein P is greater than or equal to 1.
Optionally, the rebreathing device further comprises a straight-through pipe filter screen fixed at a terminal of a straight-through pipe connected with the straight-through port, the terminal of the straight-through pipe being disposed at one end of the external air of the rebreathing device.
Optionally, the inside communicating pipeline structure of keeping apart of gas storage box, pipeline end in the gas storage box is the export of gas storage box, the exit is fixed with the air strainer, the gas storage box passes through the export is led to repeat respiratory device's outside air.
Optionally, the adjusting device comprises a regulator, an electromagnetic driver and a proportional valve; when the repeated breathing device is in a constant mode, the main controller adjusts the parameters of the regulator through the electromagnetic driver according to preset parameters, and then the opening degree of the air storage port and the opening degree of the straight port are kept constant; when the repeated breathing device is in an automatic mode, the main controller adjusts the opening degree of the air storage port and the straight port through the proportional valve according to the breathing state of a user.
Optionally, the breathing apparatus is a mask without a vent.
Optionally, the proportional valve is an electromagnetic displacement valve or an electric rotary valve.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the rebreathing device of the invention divides the gas exhaled by people into a gas storage box part and a direct atmosphere part through a regulating device. The gas entering the gas storage tank is sucked again in the next suction. The gas quantity entering the gas storage box can be adjusted by adjusting the opening degree of the gas storage port and the straight opening; the carbon dioxide level in the human body is regulated by regulating how much gas is re-inhaled next time. In the medical field, the rebreathing device is a new means for treating snoring and sleep apnea, and compared with the traditional breathing machine, the rebreathing device has greatly improved comfort level and smaller side effect. In specific application, the repeated breathing device has two working modes. The constant mode allows the ratio of the proportional valve to be manually adjusted by the physician according to the clinical needs to make the ratio of the repeatedly breathed gas constant. The automatic mode can automatically adjust the proportion of the proportional valve of each breath within the range set by a doctor, so that the proportion of the repeat gas of each inhalation is different. The automatic mode may enable intelligent dynamic adjustment. Thereby achieving the stabilization of carbon dioxide level and the stabilization of respiration in the human body.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a rebreathing apparatus of the present invention.
The numbers in the figures correspond to: 1-air filter screen, 2-pipeline in gas storage tank, 3-gas storage tank, 4-main controller, 5-display screen and input control button, 6-carbon dioxide analysis device, 7-flow rate sensor, 8-carbon dioxide collection port, 9-breathing device, 10-gas connecting pipe, 11-gas inlet pipe, 12-straight pipe filter screen, 13-straight port, 14-proportional valve, 15-gas storage port, 16-electromagnetic driver and 17-regulator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural diagram of a rebreathing apparatus of the present invention. As shown in fig. 1, the rebreathing apparatus comprises: the device comprises a breathing device 9, a gas connecting pipe 10, an air inlet pipe 11, a gas storage tank 3, a regulating device and a main controller 4.
The breathing device 9 is arranged to be mounted on the face of the user for covering the oronasal area of the user. The breathing apparatus 9 is a mask without a vent hole. Breathing device 9 passes through gas connection pipe 10 is connected the first end of intake pipe 11, gas connection pipe 10 with breathing device 9 can dismantle the connection, is convenient for according to user's actual conditions, changes breathing device 9 that the size is suitable, uses in a flexible way. The second end of the air inlet pipe 11 is provided with two air vents, namely an air storage opening 15 and a straight opening 13, and the air inlet pipe 11 is communicated with the external air of the repeated breathing device through the straight opening 13; the air inlet pipe 11 is communicated into the air storage tank 3 through the air storage port 15; the gas storage tank 3 is used for storing gas exhaled by the user. The air storage box 3 is internally provided with a pipeline structure which is communicated in an isolation way, the tail end of the pipeline in the air storage box 3 is provided with an air filter screen 1, and the air storage box 3 is communicated with the external air of the repeated breathing device through the pipeline.
The adjusting device is located at the second end of the air inlet pipe 11; the adjusting device receives the adjusting signal of the main controller 4 and adjusts the opening degree of the air storage opening 15 and the opening degree of the straight opening 13 according to the adjusting signal of the main controller 4. The regulating device comprises a regulator 17, an electromagnetic drive 16 and a proportional valve 14. The proportional valve 14 is an electromagnetic displacement valve or an electric rotary valve. The regulator 17 is electrically connected with the main controller 4 to control the opening of the gas storage port 15 and the straight port 13, so as to regulate the amount of the exhaled gas entering the gas storage tank 3. The regulator 17 may be an electromagnetic proportional valve, and may have two driving modes, one being an electromagnetic displacement valve and the other being an electric rotary valve. The displacement motion or the rotation motion of the proportional valve can realize the increase of the size of the straight opening while the size of the gas storage opening is increased, or the size of the straight opening while the size of the gas storage opening is reduced. The maximum proportion can realize that the air storage opening is completely opened and the straight opening is completely closed; the minimum proportion realizes that the gas storage port is completely closed, and the straight port is completely opened. Other adjustment means may be used for the regulator 17, depending on the actual situation.
The rebreathing device further comprises: a flow rate sensor 7 and a capnography apparatus 6; the flow rate sensor 7 is fixed at the first end of the air inlet pipe and used for measuring the flow rate of gas in the air inlet pipe so as to measure the respiratory flow rate of a user, converting the flow rate data into an electric signal and inputting the electric signal to the main controller 4; the collection mouth 8 of carbon dioxide analysis device 6 is fixed in the first end of intake pipe 11 gathers the gas in the intake pipe 11 through carbon dioxide collection mouth 8, the analysis the concentration of carbon dioxide in the intake pipe 11 to turn into the signal of telecommunication with carbon dioxide concentration data and input to main control unit 4.
The rebreathing device further comprises a straight-through pipe filter screen 12, wherein the straight-through pipe filter screen 12 is fixed at the tail end of a straight-through pipe connected with the straight-through port 13, and the tail end of the straight-through pipe is arranged at one end of the external air of the rebreathing device. The air filter screen 1 and the straight-through pipe filter screen 12 at the outlet of the air storage box are used for filtering dust, moisture and bacteria in the air flow, so that a user can inhale clean air, and meanwhile, the service life of the repeated breathing device is prolonged.
The main controller 4 of the present invention has an operation interface and an input/output interface, and fig. 5 shows a display screen and input control keys of the main controller, and the modes of the whole repetitive breathing apparatus can be adjusted through the display screen and the input control keys 5. The display screen and the input control button 5 are used for displaying the information of the flow rate, the carbon dioxide concentration and the proportional valve proportion, and transmitting the information set by the user to the main controller 4.
The rebreathing device has two working modes, namely a constant mode and an automatic mode. In use, the operating state of the device can be set by means of the display and input control buttons 5. In the constant mode, the ratio is always fixed according to the ratio parameters set by a user, the parameters of the regulator 17 are regulated through the electromagnetic driver 16, so that the opening sizes of the gas storage port 15 and the straight port 13 are kept constant, and the ratio of gas entering the gas storage tank 3 and the straight port 13 during each breathing is also fixed.
In the automatic mode, the main controller 4 receives dual signals of the carbon dioxide analysis device 6 and the flow rate sensor 7, intelligently adjusts the state of the proportional valve 14 in real time according to the breathing state of a user, and adjusts the opening degree of the gas storage port 15 and the opening degree of the straight port 13 through the proportional valve 14 so as to dynamically adjust the proportion of gas entering the gas storage tank 3 in real time. The automatic mode can set parameters such as minimum proportion, maximum proportion, response sensitivity, delay rise and the like. Specifically, the control mode in the automatic mode is as follows:
first, the main controller 4 determines the respiratory state of the user according to the data of the flow rate sensor 7 and the data of the capnography apparatus 6, wherein the respiratory state of the user includes: a flow restricted state, an apnea state, a circuit shedding state, and an stale breathing state. When the air suction oscillogram formed by the air suction flow rate data measured by the flow rate sensor 7 has platform or snore vibration, the air flow is determined to be in a limited state; when the respiration alternation waveform chart formed by the expiratory flow rate data and the inspiratory flow rate data measured by the flow rate sensor 7 is interrupted for more than N seconds and the respiration alternation waveform chart appears again within N minutes, the state is determined as an apnea state; wherein N is greater than 5 and N is greater than 1; when the data of the expiratory flow and the inspiratory flow measured by the flow sensor 7 lasts for more than M minutes and is zero, determining that the data is in a pipeline falling state; wherein M is greater than 1 and M is greater than or equal to N; when the expiratory flow rate data and the inspiratory flow rate data measured by the flow rate sensor 7 gradually decrease after increasing, or the carbon dioxide data measured by the carbon dioxide analysis device 6 gradually decrease after increasing, the stale respiration state is determined. As a preferred embodiment, N ═ 10, N ═ 2, and M ═ 2. Other values of the parameters can be set according to the actual situation of the user. For example, in the medical field, the time for hypopnea (flow limitation) and apnea (flow cessation) is clinically limited to no less than 10 seconds, and less than 10 seconds is not a condition of hypopnea and apnea, and at this time, n may be set equal to 10 according to the specific condition of the patient.
Then, an adjustment signal for adjusting the opening degrees of the air storage port 15 and the straight port 13 is generated according to the breathing state of the user. When the breathing state of the user is a flow limitation state and T times occur in one minute or an apnea state and I times occur in one minute, the main controller 4 generates a first adjusting signal for increasing the opening degree of the air storage opening and decreasing the opening degree of the straight opening, so that the amount of the repeatedly breathed air is increased, wherein T is more than or equal to 1, I is more than or equal to 1, T is more than or equal to I, and preferably T is 3, and I is 2. Other values of the parameters can be set according to the actual situation of the user; when the breathing state of the user is a stale breathing state, when the flow rate data measured by the flow rate sensor 7 is gradually increased or the carbon dioxide data measured by the carbon dioxide analysis device 6 is gradually increased, the main controller 4 generates a second adjusting signal for gradually increasing the opening degree of the air storage port; when the flow rate data measured by the flow rate sensor is faded down or the carbon dioxide data measured by the carbon dioxide analysis device is faded down, the main controller generates a third adjusting signal for gradually reducing the opening of the gas storage port so as to stabilize the level of the carbon dioxide in the body of the user; when the breathing state of the user is not the airflow limited state, the apnea state and the stale breathing state within P minutes, the main controller 4 generates a fourth adjusting signal for reducing the opening degree of the air storage port and increasing the opening degree of the straight port, and reduces the amount of the gas entering the air storage tank 3. Wherein P is greater than or equal to 1. Preferably, P is 1.
The working principle of the repeated breathing device is as follows: the device is directly connected with the mouth and the nose of a patient through a breathing device, and after exhaled air is distributed according to different proportions through a regulator, one part of the exhaled air enters an air storage box through an air storage port, and the other part of the exhaled air directly enters the atmosphere through a straight port. When the air is sucked next time, the air in the air storage box is sucked again through the air storage opening, and part of fresh air is sucked through the straight opening. When applied in the medical field, the utility model belongs to a non-invasive therapeutic apparatus, which is a new means for treating snoring and sleep apnea. Mainly used for treating snore patients without severe sleep apnea and physiological anatomical abnormality, central sleep apnea patients and chronic respiratory patients. Compared with the traditional breathing machine, the comfort level is qualitatively leaped, and the side effect is less. When the device is used, a doctor sets the working mode and parameters of the device, then the breathing device on the face covers the mouth and the nose of a patient, and the device is set to work in a constant proportion mode or an intelligent automatic proportion mode.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A rebreathing device, comprising: the device comprises a breathing device, a gas connecting pipe, a gas inlet pipe, a gas storage tank, an adjusting device and a main controller;
the breathing device is covered on the face of a user and is used for covering the mouth and nose parts of the user; the breathing device is connected with the first end of the air inlet pipe through the air connecting pipe;
the second end of the air inlet pipe is provided with an air storage opening and a straight opening; the air inlet pipe is communicated with the external air of the repeated breathing device through the straight opening; the air inlet pipe is communicated into the air storage box through the air storage port; the gas storage tank is used for storing gas exhaled by the user;
the adjusting device is positioned at the second end of the air inlet pipe; the adjusting device receives an adjusting signal of the main controller and adjusts the opening degree of the air storage port and the opening degree of the straight port according to the adjusting signal of the main controller;
the rebreathing device further comprises: a flow rate sensor and a carbon dioxide analysis device; the flow velocity sensor is fixed at the first end of the air inlet pipe and used for measuring the flow velocity of the gas in the air inlet pipe; the acquisition port of the carbon dioxide analysis device is fixed at the first end of the air inlet pipe and is used for analyzing the concentration of carbon dioxide in the air inlet pipe; the main controller determines the breathing state of a user according to the data of the flow rate sensor and the data of the carbon dioxide analysis device, and further generates an adjusting signal for adjusting the opening degree of the air storage port and the straight port; the respiratory state includes: an airflow limited state, an apnea state, a pipeline shedding state and an aging respiration state;
when the respiratory state of the user is an airflow limited state and T times occur in one minute or an apnea state and I times occur in one minute, the main controller generates a first adjusting signal for increasing the opening degree of the gas storage port and decreasing the opening degree of the straight port, wherein T is greater than or equal to 1, I is greater than or equal to 1, and T is greater than or equal to I;
when the breathing state of the user is a stale breathing state, the main controller generates a second adjusting signal for gradually increasing the opening degree of the air storage port when the flow rate data measured by the flow rate sensor is gradually increased or the carbon dioxide data measured by the carbon dioxide analysis device is gradually increased; when the flow rate data measured by the flow rate sensor is faded down or the carbon dioxide data measured by the carbon dioxide analysis device is faded down, the main controller generates a third adjusting signal for gradually reducing the opening of the gas storage port;
and when the breathing state of the user is not the airflow limited state, the apnea state and the resuscitation state within P minutes, the main controller generates a fourth adjusting signal for reducing the opening degree of the air storage opening and increasing the opening degree of the straight opening, wherein P is greater than or equal to 1.
2. The rebreathing apparatus of claim 1, wherein the flow limitation condition is determined when a plateau or snore oscillations occur in an inspiratory waveform profile formed from inspiratory flow rate data measured by the flow rate sensor;
when a respiration alternation oscillogram formed by the expiratory flow rate data and the inspiratory flow rate data measured by the flow rate sensor is interrupted for more than N seconds and the respiration alternation oscillogram appears again within N minutes, determining that the respiration alternation oscillogram is in an apnea state; wherein N is greater than 5 and N is greater than 1;
when the expiratory and inspiratory flow rate data measured by the flow rate sensor lasts for more than M minutes and is zero, determining that the data is in a pipeline falling state; wherein M is greater than 1 and M is greater than or equal to N;
and when the expiratory flow rate data and the inspiratory flow rate data measured by the flow rate sensor gradually decrease after increasing, or the carbon dioxide data measured by the carbon dioxide analysis device gradually decreases after increasing, determining that the respiration state is the stale respiration state.
3. The rebreathing device of claim 1, further comprising a straight-through tube strainer affixed to an end of a straight-through tube connected to the straight-through port, the end of the straight-through tube being disposed at an end of air external to the rebreathing device.
4. The rebreathing device of claim 1, wherein the gas tank is internally provided with a pipeline structure which is isolated and communicated, the end of the pipeline in the gas tank is an outlet of the gas tank, an air filter screen is fixed at the outlet, and the gas tank is communicated with the external air of the rebreathing device through the outlet.
5. The repetitive breathing device of claim 1 wherein the regulating means comprises a regulator, an electromagnetic drive and a proportional valve; when the repeated breathing device is in a constant mode, the main controller adjusts the parameters of the regulator through the electromagnetic driver according to preset parameters, and then the opening degree of the air storage port and the opening degree of the straight port are kept constant; when the repeated breathing device is in an automatic mode, the main controller adjusts the opening degree of the air storage port and the straight port through the proportional valve according to the breathing state of a user.
6. The rebreathing device of claim 1, wherein the breathing device is a non-vented mask.
7. The rebreathing device of claim 5, wherein the proportional valve is an electromagnetic displacement valve or an electrically operated rotary valve.
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| CN201910026134.3A CN109481808B (en) | 2019-01-11 | 2019-01-11 | a rebreathing device |
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| CN201271419Y (en) * | 2008-08-27 | 2009-07-15 | 李占芳 | Disposal semi-open type air storing bag for supplying oxygen |
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| CA2304292C (en) * | 2000-03-31 | 2009-01-13 | Joseph Fisher | An improved rebreathing circuit to set and stabalize end tidal and arterial pco2 despite varying levels of minute ventilation |
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| CN101884819B (en) * | 2010-07-19 | 2012-09-05 | 重庆医科大学附属第一医院 | Carbon dioxide repeating respirator |
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| CN201271419Y (en) * | 2008-08-27 | 2009-07-15 | 李占芳 | Disposal semi-open type air storing bag for supplying oxygen |
| CN104640591A (en) * | 2012-01-27 | 2015-05-20 | 瑞思迈有限公司 | Discrimination of cheyne-stokes breathing patterns |
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