CN218484966U

CN218484966U - Device for improving respiratory oxygenation amount and oxygenation rate

Info

Publication number: CN218484966U
Application number: CN202220927521.1U
Authority: CN
Inventors: 刘成一
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2023-02-17
Anticipated expiration: 2032-04-21

Abstract

The utility model relates to an improve device of breathing oxygenation volume and oxygenation rate is equipped with breathing channel, and breathing channel's front end is the mouth of breathing for intercommunication user's respiratory, the last resistance control valve that is equipped with of breathing channel, and the breathing channel between resistance control valve and the mouth of breathing is equipped with the breathing channel pressure sensor who is used for detecting its internal pressure, and breathing channel's rear end divide into two tunnel, is the breathing channel all the way, and another way is the breathing channel, and the air supply is connected to the rear end of breathing channel, and the rear end of breathing channel is connected and is breathed the power supply, be equipped with first pneumatic valve on the breathing channel, be equipped with the second pneumatic valve on the breathing channel. The utility model discloses an adjust the air current resistance that resistance control valve increases in the breathing passage, both can improve the pressure of expired gas, make the pressure rise in the human lung, can prolong the dwell time of oxygen in the human lung again to improve the oxygen inhalation volume of breathing and oxygenation rate, be favorable to having the treatment and the recovery of the patient of oxygen inhalation demand.

Description

Device for improving respiratory oxygenation amount and oxygenation rate

Technical Field

The utility model relates to a device for improving respiratory oxygenation capacity and oxygenation rate, which belongs to the technical field of medical equipment.

Background

Human life can not escape oxygen, oxygen is inhaled through breathing, the oxygen is combined with hemoglobin in the lung to generate oxygen-carrying hemoglobin, the oxygen-carrying hemoglobin sends the oxygen to the whole body, and carbon dioxide, residual oxygen and other inhaled gas components in the lung are exhausted out of the body through expiration. Due to the limitation of oxygenation time, oxygen contact area and oxygen pressure in the lung, most of oxygen is exhaled without being oxygenated with hemoglobin (no matter inhaled air, pure oxygen or therapeutic gas containing oxygen), for example, when a human body breathes air, the inhaled oxygen concentration is 21%, while the exhaled oxygen concentration is about 16%, which means that the human body only combines oxygen with 5% concentration in the inhaled air during breathing, and the respiratory oxygen amount and oxygenation rate are limited, which is not beneficial to the treatment and rehabilitation of patients (or users) with oxygen demand.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects of the prior art, the utility model provides a device for improving respiratory oxygenation capacity and oxygenation rate, which is beneficial to improving respiratory oxygenation capacity and oxygenation rate.

The utility model discloses realize above-mentioned purpose's technical scheme is: the device for improving the breathing oxygenation capacity and oxygenation rate is provided with a breathing channel, wherein the front end of the breathing channel (or called breathing channel or air channel for short) is a breathing port and is used for communicating a breathing system of a user, a resistance control valve is arranged on the breathing channel, and a breathing channel pressure sensor for detecting the internal pressure of the breathing channel is arranged on the breathing channel between the resistance control valve and the breathing port.

The breathing passage may adopt any one of the following basic configurations:

1) The breathing passage serves as both an inhalation passage and an exhalation passage (the simplest configuration).

2) The air supply is connected to breathing passageway's rear end, breathing passageway sets up the exhale passageway that only is used for exhaling in order to connect out the form of branch road, exhale the front end of passageway and connect on the breathing passageway of resistance control valve's rear end, exhale the rear end of passageway and be the opening end, can be connected with the source of expiratory power (be negative pressure source usually), be located exhale the breathing passageway of passageway connection site rear side only be used for breathing in, can be called the passageway of breathing in, be equipped with first pneumatic valve on the passageway of breathing in, be equipped with the second pneumatic valve on the passageway of breathing in.

Preferably, the rear end of the breathing passage is divided into two paths (divided into two breathing passage branches), one path is an inspiration passage, the other path is an expiration passage, the rear end of the inspiration passage is connected with an air source, and the rear end of the expiration passage is connected with an expiration power source.

Preferably, a first air valve is arranged on the air suction channel.

Preferably, a second air valve is arranged on the expiration channel.

The expiratory power source may be a negative pressure pump (e.g., a plunger pump) or any other device adapted to function as an expiratory power.

For example, the expiratory power source is a gas container capable of being set to a negative pressure (a state in which the inside is in a negative pressure state).

For example, the gas container may be a sealed container (a container without an opening), and a negative pressure air pump is connected.

Preferably, a gas container pressure sensor for detecting the internal pressure of the gas container is provided on the gas container.

Preferably, the suction passage is provided with a suction branch, the front end of the suction branch is connected to the suction passage located on the front side of the first air valve, the rear end of the suction branch is communicated with the atmosphere (open), and the suction branch is provided with a third air valve. Through the branch arrangement, the air suction can be carried out without an air source under corresponding conditions, and an appropriate air suction mode can be selected or switched according to actual conditions.

Preferably, the breathing passage is provided with an expiration branch, the front end of the expiration branch is connected to the breathing passage positioned at the front side of the resistance control valve, and the expiration passage branch is provided with a fourth air valve. With this bypass arrangement, in a corresponding situation, exhalation can be performed without a resistance control valve, as with a conventional ventilator. The suitable expiration mode can be selected or switched according to the actual treatment condition.

The breathing port can be provided with a breathing mask or a mouth mask.

The breathing port may be provided with a nasal cannula or any other suitable prior art.

The front end of the main body part (main pipe) of the breathing passage can be a structure suitable for installing (for example, plugging) a breathing port (comprising various forms of pieces used as the breathing port), and the suitable breathing port can be installed at the front end of the main body part (main pipe) of the breathing passage according to actual needs.

The resistance control valve may be any valve suitable for adjusting the resistance of the breathing passage, for example, various suitable flow control valves, stop valves (valves having only two operating states of on and off), and the like, and the resistance (flow rate) of the breathing passage may be adjusted by changing the opening degree of the valve or by other suitable means.

The resistance control valve can be an electric control valve and can also be a manual control valve, and when the resistance control valve adopts the manual control valve, the breathing channel can be not provided with the breathing channel pressure sensor.

The resistance control valve is preferably an electrically controlled valve so that the exhalation resistance can be automatically controlled according to the pressure signal detected by the breathing passage pressure sensor.

Preferably, the number of the air sources is one or more, and a plurality of the air sources are connected in parallel at the rear end of the breathing passage.

When the number of the air sources is a plurality, an outlet of each air source or a connecting pipeline between each air source and the rear end of the breathing channel is provided with an air outlet control valve, and the air outlet control valve can be a stop valve or a flow regulating valve.

The source of gas may be a container, such as a cylinder, containing a therapeutic gas comprising oxygen, nitric oxide, a pharmaceutical aerosol, or the like.

Can set up supporting controlling means (for example central processing unit or PLC controller) according to prior art and carry out the utility model discloses in the control of each relevant component/device (mainly indicate each valve), can also gather the output signal of each detecting element (mainly indicate each pressure sensor) through supporting suitable data acquisition circuit, send into controlling means as the foundation of the relevant component/device work of control, so that the utility model discloses realize required breathing mode under corresponding controlling means's control.

The utility model has the advantages that: the utility model can increase the airflow resistance in the breathing channel by adjusting the resistance control valve in the process of expiration, thereby not only improving the pressure of the expired gas and increasing the pressure in the lung of the human body, but also prolonging the retention time of oxygen in the lung of the human body, thereby improving the oxygen respiration amount and oxygenation rate, and being beneficial to the treatment and rehabilitation of patients with oxygen inhalation demand; the expiration power can be increased through the expiration power source, the expiration capacity of the patient is compensated, the actual expiration time is shortened, and the reasonable breathing cycle is kept.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the present invention;

fig. 2 is a schematic structural view of another embodiment of the present invention;

FIG. 3 is a graph of pressure within the respiratory tract over time for a breathing process of a human;

FIG. 4 is a graph comparing the pressure in the respiratory tract versus time with and without increased expiratory resistance during a breath of a human;

FIG. 5 is a graph comparing the graph of FIG. 4 with a graph of pressure in the airway increasing negative pressure in the exhalation passage over time during exhalation;

fig. 6 is a schematic diagram of the structure and control of the product according to the present invention.

Detailed Description

All directional indicators (e.g., front, rear, etc.) in the embodiments of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the drawings), and do not constitute a limitation on the actual use direction, and if the specific posture is changed, the directional indicator is changed accordingly.

Referring to fig. 1, fig. 2 and fig. 6, the utility model discloses an improve device of breathing oxygenation volume and oxygenation rate, including breathing passageway 1, breathing passageway is for being suitable for the passageway or the pipeline of gas circulation for the circulation of human inspiratory gas and expired gas, breathing passageway's front end is for being used for the mouth of breathing with human breathing chamber intercommunication, be equipped with resistance control valve 2 on the breathing passageway, resistance control valve is the pneumatic valve that can adjust passageway air current resistance, and the resistance when exhaling through the regulation can be adjusted and exhale the flow (velocity of flow) curve of in-process, realizes required expiration mode. And a breathing channel pressure sensor 3 is arranged in a breathing channel between the resistance control valve and the breathing port and used for detecting the real-time pressure in the breathing channel.

The breathing passage pressure sensor can be arranged in the breathing passage and can also be hermetically inserted into the breathing passage from the outside of the breathing passage.

The breathing passage may adopt any one of the following basic configurations:

1) The breathing passage serves as both an inhalation passage and an exhalation passage.

By adopting the structure, in the breathing process of a human body, the inhaled air enters the breathing channel from the rear end of the breathing channel, the exhaled air is exhausted into the atmosphere from the rear end of the breathing channel, and the expiratory flow (expiratory resistance) in the breathing channel is adjusted by the resistance control valve during exhalation.

2) The rear end of the breathing passage is connected with an air source 4 or communicated with the atmosphere, an expiration passage 102 which is only used for expiration is arranged in a form of a branch connection, the expired gas of a human body in the expiration process is exhausted, the front end of the expiration passage is connected to the breathing passage at the rear end of the resistance control valve, the rear end of the expiration passage is an open end and can be communicated with the atmosphere or connected with an expiration power source, the breathing passage which is located at the rear side of the connection part of the expiration passage and the breathing passage is an inspiration passage 101 and used for the human body to inhale therapeutic gas or air in the inspiration process, a first air valve 5 is arranged on the inspiration passage and used for controlling the on-off of the inspiration passage, and a second air valve 6 is arranged on the expiration passage and used for controlling the on-off of the expiration passage.

In fact, the exhalation passage (the portion of the breathing passage that constitutes the exhalation passage) and the branching exhalation passage in the above configuration can be regarded as dividing the rear end of the breathing passage into two paths, one path being the exhalation passage and the other path being the inhalation passage.

By adopting the structure, in the breathing process of a human body, therapeutic gas or air from the gas source is inhaled, the first gas valve is opened and the second gas valve is closed when the human body inhales, the exhaled gas is exhausted into the atmosphere from the rear end of the exhalation channel, the first gas valve is closed and the second gas valve is opened when the human body exhales, and the exhalation flow (exhalation resistance) in the breathing channel is adjusted through the resistance control valve.

The rear end of the expiration channel is preferably connected with a gas container 7, and the gas container is provided with a negative pressure air pump 8. So set up, can be when the human body exhales the negative pressure of certain degree is formed in the exhaling passageway, for the patient that has the expiration obstacle provides supplementary expiration measure, directly adopt the negative pressure air pump as the expiratory power supply in other words, the negative pressure that this kind of negative pressure container provided is more stable, and easily controls.

The gas container is mainly used for stabilizing pressure change in the expiration channel and reducing pressure fluctuation. The gas container is preferably internally provided with a gas container pressure sensor 9 which is used for detecting the real-time pressure in the gas container, controlling the negative pressure air pump to work according to the detected pressure signal, adjusting the air pressure in the gas container and the expiration channel, and adjusting the pressure in the expiration channel to the most suitable expiration auxiliary pressure of the patient.

When the rear end of the air suction channel is connected with an air source, the air suction channel is preferably provided with an air suction branch 103, the front end of the air suction branch is connected to the air suction channel at the front end of the first air valve, the rear end of the air suction branch is communicated with the atmosphere, and the air suction branch is provided with a third air valve 10 for controlling the on-off of the air suction branch. In practical applications, the inhalation channel is connected to or disconnected from the inhalation branch (controlled by the first air valve and the third air valve), and whether therapeutic gas or air is inhaled can be selected according to the actual needs of the patient. In addition, the inspiration branch can be arranged to discharge the expired air through the inspiration branch under the condition that the patient does not need auxiliary expiration measures to assist expiration (the expiration is assisted by the gas container and the negative pressure air pump). The discharge channel of the gas exhaled by the human body can be switched between the exhalation channel and the inhalation branch according to requirements.

When the rear end of the expiration channel is connected with an expiration power source or the gas container, an expiration branch (not shown) can be arranged on the expiration channel, the front end of the expiration branch is connected with the expiration channel at the front end of the second gas valve, and a fourth control valve is arranged on the expiration branch so as to directly exhale through the expiration branch as required.

The number of the gas sources can be one or a plurality of gas sources, when the number of the gas sources is a plurality, therapeutic gas in the plurality of gas sources is usually different, each gas source is connected in parallel at the rear end of the breathing channel, an outlet of each gas source or a connecting pipeline between each gas source and the rear end of the inspiration channel is provided with a gas outlet control valve for controlling the gas outlet of the corresponding gas source, and the corresponding therapeutic gas (inspiration gas) can be selected and used according to the actual requirement of a patient.

The gas source may be a container, such as a corresponding gas canister, for containing a mixture of therapeutic gas components, such as oxygen, nitric oxide or a pharmaceutical aerosol, in appropriate proportions (the mixture may also be referred to simply as the therapeutic gas).

In the breathing process, what inhale is from the rear end of breathing passageway (breathing in the passageway) gets into the gas in the breathing passageway, when breathing in, first pneumatic valve is opened, the second pneumatic valve is closed, when exhaling, first pneumatic valve is closed, the second pneumatic valve is opened, and expired gas is discharged after getting into the gas container from the breathing passageway (if necessary, the output tube of gas container can insert gas degassing unit, discharges after disinfecting, can set up emission control valve and exhaust pump on the output tube of gas container, and the gas in the gas container is sent into gas degassing unit according to actual conditions is continuous or when needs). Through resistance control valve control expiratory pressure in the breathing passage, when expiration begins, control is higher pressure to do benefit to and reach better oxygenation effect, after the settlement time, reduce pressure can rely on the gas container with the negative pressure air pump's setting forms the negative pressure of certain degree in the passageway, provides supplementary expiratory power for the patient that has the expiratory disturbance. In addition, the structure can also discharge the expired air through the expiration branch in the case that the patient does not need auxiliary expiration measures to assist expiration (the expiration is assisted by the gas container and the negative pressure air pump). The discharge channel of the gas exhaled by the human body can be switched between the exhalation channel and the exhalation branch according to requirements.

The gas container is preferably provided with a gas container pressure sensor for detecting the real-time pressure in the gas container, controlling the negative pressure air pump to work according to the detected pressure signal, adjusting the air pressure in the gas container and the expiration channel, and adjusting the pressure in the expiration channel to the most suitable expiration auxiliary pressure (usually negative pressure) of the patient.

The breathing opening is preferably provided with a breathing mask 11 or a nasal catheter, so that the breathing opening is convenient to wear and use and is communicated with a breathing cavity of a human body.

The device for improving the oxygen respiration amount and the oxygenation rate can be provided with a matched control device (such as a central processing unit or a PLC controller) according to the prior art to control related elements/devices (mainly indicating various valves), and can also collect output signals of various detection elements (mainly indicating various pressure sensors) through a matched and proper data acquisition circuit and send the output signals to the control device to be used as a basis for controlling the related elements/devices to work.

The preferred and optional technical means disclosed in the present invention can be combined arbitrarily to form a plurality of different technical solutions, except for the specific description and the further limitation that one preferred or optional technical means is another technical means.

The principle basis of the device for improving the oxygen respiration amount and the oxygenation rate is as follows:

the oxygenation amount and oxygenation rate of oxygen and hemoglobin in the alveoli are proportional to the oxygen pressure, so increasing the oxygen pressure or inspired gas pressure can increase the oxygenation amount.

The pressure in the respiratory tract (human respiratory tract) changes along with respiration, and is low when the air is inhaled and high when the air is exhaled. If the ambient pressure is used as the zero pressure, that is, the breathing passage pressure sensor is located outside the breathing passage, the pressure inside the breathing passage is negative during inhalation, and the pressure during exhalation is positive, and a pressure change curve of the inhalation process is specifically shown in fig. 3, wherein P is the pressure, and t is the time.

1. Pressure control curve:

as shown in fig. 4, curve 1 is the pressure when the expiratory resistance is not increased, curve 2 is the pressure after the expiratory resistance is increased, and the shape of curve 2 can be adjusted as needed. Curve 2 in FIG. 4 is a specific example of a control curve, in which the physical meaning of the portion t2-t3 is that the device for increasing the respiratory oxygen hydration and oxygenation increases the respiratory channel resistance by adjusting or completely closing the gas valve during the patient's exhalation phase. the physical meaning of the t3-t4 part is that the air valve is adjusted to reduce the airflow resistance of the respiratory passage, so that the respiratory passage is opened again. Preferably, the t3-t4 part can be regarded as some function f (t), so its shape can be adjusted as needed. the function shape of the part t3-t4 can be not limited, and the target negative pressure value can be reached at t 4.

The extra resistance applied to the breathing channel by the device for improving the breathing oxygen amount and the oxygenation rate in the inspiration phase and the expiration phase can be automatically calculated by the control device or manually controlled.

When the expiratory tidal volume and the unit forced expiratory volume (when the expiratory volume is made for the first time and then the expiration is made as soon as possible after the maximum inspiration, the maximum gas volume that can be expired in the unit time represents the ventilation capacity of the breathing passage, and is positively correlated with the maximum value of the amplitude of the curve 1 in the expiratory phase, the gas pressure formula pV = nRT, P is the pressure, V is the gas volume (the volume of the gas that can be accommodated by the lung/airway), n is the molar quantity of the substance (gas), T is the temperature, and P is directly proportional to n) are fixed values, if the optimal pressure control curve P (T) (curve 2) in the expiratory phase is required, the integral S of the oxygenation quantities O (P, T) (a function that varies with the pressure P and the time T) at different pressures and the final residual pressure value Δ P1 need to be optimized, and the oxygenation integral S under the pressure shown by the curve 2 is maximized and the residual pressure Δ P1 is minimized during the expiratory period.

As shown in formula (1), since the amount of oxygenation O (P, t) is a binary function with respect to pressure and time variations, and the functional relationship (physical characteristics) between the amount of oxygenation O (P) and the pressure P is fixed (O (P) and P (t) are independent of each other), by maximizing the integral S, the functional relationship between the amount of oxygenation O (t) and the time t, that is, the relationship between the pressure P and the time t (optimum pressure control curve) can be found. As also shown in equation (2), in the case where the expiratory tidal volume is fixed, the pressure variation during inspiration is a mirror image of the pressure variation during expiration, and thus the integral of the pressure variation during inspiration is equal to the integral of the pressure variation during expiration (no pressure variation during the period t2-t 3). In the formula (3), t ₁ At the moment when the pressure curve changes from negative to positive (start of exhalation), t ₂ The moment when the airway ventilation capacity reaches the maximum (fastest expiratory flow), t ₃ For the moment when the pressure curve begins to decrease in amplitude (device closed), t ₄ The time at which the residual gas pressure reaches Δ p1 is the end of the exhalation process. Although the time length of P (t) in formula (1) is not limited, the time length of P (t) is limited by formula (2) and formula (3), and thus an optimum pressure control curve can be determined. In addition, the amount of oxygenation can be expressed by indices such as oxygen partial pressure, blood oxygen saturation, oxygenation index, and the like.

S＝max∫∫O(p,t)dpdt＝max∫∫O(p)P(t)dpdt (1)

2. Negative pressure method reduces gas retention:

in order to increase the exhalation speed at the end of exhalation and to reduce the residual volume, during the exhalation phase t ₃ At a time t after the time (after opening the device) ₅ Adding negative pressure-delta p2 (preferably-3 to-5 cmH) ₂ O), as in curve 3 of fig. 4, will reduce pulmonary retention of gas.

Moment (t) of adding negative pressure-delta p2 ₅ ) Depending on the characteristics of the pressure curve P (t): if the pressure curve P (t) is less than a certain threshold value P _TH Or the first derivative of P (t) is greater than a certain threshold D _TH Then negative pressure- Δ p2 is added.

3. Differentiation and judgment of expiration and inspiration phases

As can be seen from FIG. 5, at the boundary point t between the inspiration phase and the expiration phase ₁ The pressure curve P (t) has a value of 0. At the same time, the first derivative of the pressure curve P (t) also changes from small to large, i.e. the second derivative of P (t) changes from negative to positive.

In addition, if the ambient (atmospheric) pressure is not used as the zero line, at t ₁ The value of the pressure profile P (t) may not be 0. At this time, t can be found by fitting a pressure curve to the data ₁ According to which t is located or predicted ₁ 。

When the device for improving the respiratory oxygen amount and the oxygenation rate is applied (by taking the preferred technical scheme of the formula 2 as an example), the real-time pressure in the respiratory channel is detected by the respiratory channel pressure sensor, and the detected pressure signal is fed back to the control device so as to analyze the respiratory state, including an inhalation phase, a respiratory phase, a turning point, a maximum pressure, a minimum pressure, a respiratory cycle, an inhalation-exhalation ratio and the like, and the device is used for optimizing control, state recording, effect analysis and the like. The control device can set two control modes according to the prior art: automatic analysis and manual adjustment. In the automatic analysis mode, the control device calculates an optimal pressure control curve P (t), the size of negative pressure-delta P2 and the time t of adding the negative pressure-delta P2 according to a pressure signal in the breathing passage fed back by the breathing passage pressure sensor ₅ (which may be calculated from the pressure signal in the breathing passage detected during the first breathing cycle of the patient); in the manual adjustment mode, the control device can manually set the inhalation and exhalation resistances (thereby changing the pressure control curve P (t)), the duration, and the magnitude of the negative pressure- Δ P2, as needed.

The resistance control valve is used for adjusting and controlling airflow impedance (airflow flow) in the breathing passage, can be continuously controlled and can also be completely closed, and the airflow impedance is adjusted in real time by controlling the opening degree of the flow control valve through the control device. The air flow impedance can be continuously changed or changed in a step mode, or only in an on-off state (the simplest condition), and continuous flow resistance control is not carried out.

The first air valve is controlled by the control device, the inhalation phase is opened, the exhalation phase is closed, the therapeutic gas is inhaled in the inhalation phase, and when special therapeutic gas is not needed, the first air valve can be directly connected with ambient air through the inhalation branch. The therapeutic gas may be a single gas such as oxygen, nitric oxide or medicinal aerosol, or may be a combined gas (non-mixed), and the concentration, flow rate and release sequence of the therapeutic gas may be controlled by the control device according to the prescription setting.

The second air valve is controlled by the control device, is opened in an expiration phase, is closed in an inspiration phase, provides negative pressure in the expiration phase, and can be directly connected with ambient air when negative pressure expiration is not needed. The control device controls the negative pressure air pump to adjust the air pressure in the gas container according to a pressure signal detected by the gas container pressure sensor, so that the pressure in the respiratory tract conforms to an optimal pressure control curve P (t) and a set negative pressure-delta P2.

The utility model discloses a working process does:

(1) The breathing port is connected with the mouth or the nose of a human body, the breathing passage pressure sensor continuously transmits the detected pressure signal in the breathing passage to the control device, and the control device calculates an optimal pressure control curve P (t), and a boundary point t between an inspiration phase and an expiration phase ₁ Negative pressure-delta p2 and optimum time t for adding negative pressure-delta p2 ₅ ；

(2) The control device controls the resistance control valve to adjust the inspiration and expiration resistance (flow) according to the optimal pressure control curve P (t) calculated in the step (1), so that the pressure in the respiratory tract conforms to the optimal pressure control curve P (t);

(3) During the inspiration phase in the step (2), the control device controls the first air valve to open and the second air valve to close, so that the patient inhales therapeutic gas from the gas source (therapeutic gas source) or inhales air through a port of the breathing passage communicated with the atmosphere;

(4) Reaching the boundary point t between inspiratory phase and expiratory phase in step (1) ₁ When the expiratory phase begins in step (2), the control device controls the second air valve to be opened and the first air valve to be closed, preferably at the optimal time t ₅ And (2) adding negative pressure-delta P2 to enable the pressure in the gas container and the expiratory channel to accord with the optimal pressure control curve P (t) calculated in the step (1), and adding the negative pressure-delta P2 at any time in the interval of t2-t 4.

Claims

1. The utility model provides an improve device of breathing oxygenation volume and oxygenation rate, its characterized in that is equipped with breathing passage, breathing passage's front end is for breathing the mouth for communicate user's respiratory, be equipped with the resistance control valve on the breathing passage, the resistance control valve with be equipped with the breathing passage pressure sensor who is used for detecting its internal pressure on the breathing passage between the mouth, the resistance control valve is electrically controlled valve.

2. The device for increasing respiratory oxygenation and oxygenation as claimed in claim 1, wherein the back end of the respiratory pathway is divided into two paths, one path is an inspiratory pathway, the other path is an expiratory pathway, the back end of the inspiratory pathway is connected to a gas source, and the back end of the expiratory pathway is connected to an expiratory power source.

3. The device for increasing respiratory oxygenation and oxygenation as claimed in claim 2, wherein a first air valve is disposed in said inspiratory conduit and a second air valve is disposed in said expiratory conduit.

4. A device for increasing respiratory oxygenation and oxygenation as claimed in claim 2 wherein said source of expiratory power is a gas reservoir capable of being set to a negative pressure.

5. The device for increasing respiratory oxygen content and oxygenation of claim 4 wherein said gas container is a sealed container with a negative pressure air pump.

6. A device for increasing respiratory oxygenation and oxygenation as claimed in claim 5, wherein said gas container is provided with a gas container pressure sensor for detecting the internal pressure thereof.

7. The device for increasing respiratory oxygenation and oxygenation of claim 1, wherein said respiratory port is provided with a respiratory mask or a mouth mask.

8. A device for increasing respiratory oxygenation and oxygenation as claimed in claim 1 wherein said respiratory port is provided with a nasal cannula.

9. The device for increasing respiratory oxygenation and oxygenation of any one of claims 2-6, wherein the inspiration passage is provided with an inspiration branch, the front end of the inspiration branch is connected to the inspiration passage on the front side of the first air valve, the rear end of the inspiration branch is communicated with the atmosphere, and the inspiration branch is provided with a third air valve.

10. The device for increasing respiratory oxygenation and oxygenation of any one of claims 1-8, wherein an expiratory limb is disposed in the respiratory pathway, a front end of the expiratory limb is connected to the respiratory pathway at a front side of the resistance control valve, and a fourth air valve is disposed in the expiratory limb.