CN110090341A - A kind of constant flow pulse oxygen supply method and device of portable oxygen machine - Google Patents
A kind of constant flow pulse oxygen supply method and device of portable oxygen machine Download PDFInfo
- Publication number
- CN110090341A CN110090341A CN201810089371.XA CN201810089371A CN110090341A CN 110090341 A CN110090341 A CN 110090341A CN 201810089371 A CN201810089371 A CN 201810089371A CN 110090341 A CN110090341 A CN 110090341A
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- China
- Prior art keywords
- oxygen
- oxygen supply
- constant flow
- central processing
- processing unit
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Classifications
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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. mouth-to-mouth respiration; Tracheal tubes
-
- 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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
-
- 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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
-
- 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
-
- 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
Abstract
The present invention relates to a kind of constant flow pulse oxygen supply method and device of portable oxygen machine, method includes: that central processing unit passes through the respiratory pressure value in micro-pressure type differential pressure pick-up acquisition oxygen therapy pipeline；When the pressure value of acquisition is greater than preset threshold, it is judged as the air-breathing starting point of inspiratory event, calculates the time interval between the air-breathing starting point of adjacent inspiratory event twice, further calculate out real-time respiratory rate；Central processing unit exports to oxygen supply control valve according to the corresponding oxygen supply pulse width values of real-time respiratory rate lookup and controls its opening time length, to realize constant flow pulse oxygen supply.Device includes central processing unit and the oxygen supply control valve being separately connected with it, micro-pressure type differential pressure pick-up.The present invention can guarantee portable oxygen machine under each gear, regardless of the respiratory rate of oxygen therapic patient be it is much, total flow is fixed per minute, and the respiratory rate regardless of oxygen therapic patient can reach effective oxygen uptake magnitude.Not only oxygen is saved, but also guarantees oxygen uptake validity.
Description
Technical field
The present invention relates to Medical Devices to manufacture field, the constant flow pulse oxygen supply side of especially a kind of portable oxygen machine
Method and device.
Background technique
Currently, the use with more and more oxygen machines in clinic, requirement of the people for oxygen machine is also increasingly
Height just can increasingly be had been favored by people with portable portable oxygen mechanism of qi.Due to small in size, the system of portable oxygen machine
Oxygen ability is very restricted, thus it can not with console mode oxygen machine equally by the way of continuously supplying oxygen oxygen supply.At this
In the case of kind, small-sized portable oxygen machine then needs to carry out oxygen supply using with the pulse oxygen delivery technique of synchronized with breath, then therewith
And carry out problem and be how that oxygen supply can utmostly play the oxygen production capacity of miniature portable oxygen machine, the wave of oxygen is not generated
Take, and can guarantee the validity of oxygen uptake, the effect of oxygen uptake is made to be equal to the console mode oxygen machine of continuous flow.It is wherein phase to oxygen amount
As an important Xiang Zhibiao, if carrying out oxygen supply, when the respiratory rate of oxygen therapic patient is lower, oxygen uptake according to fixed pulse width
Amount opposite will necessarily will be lacked, inadequate so as to cause the validity of oxygen uptake.On the contrary, if being inhaled when the respiratory rate of oxygen therapic patient is higher
The oxygen absorbed of oxygen person is much of that, but produces the waste of oxygen, and is sufficiently strong in portable oxygen machine oxygen production capacity
On the basis of, if not, the increase of oxygen flow certainly will then will lead to the reduction of sucked oxygen concentration, same to influence to inhale
The validity of the oxygen uptake of oxygen person.
Summary of the invention
For above-mentioned deficiency in the prior art, the present invention provides a kind of constant flow pulse oxygen supply method of portable oxygen machine
And device.Guarantee the no matter great respiratory rate of oxygen therapic patient, can guarantee the flow (LPM) of portable oxygen machine, i.e. guarantee oxygen uptake
Person's oxygen absorbed per minute, further ensures the validity of oxygen uptake.
Present invention technical solution used for the above purpose is: a kind of constant flow pulse oxygen supply of portable oxygen machine
Method, comprising the following steps:
Step 1: central processing unit passes through the respiratory pressure value in micro-pressure type differential pressure pick-up acquisition oxygen therapy pipeline；
Step 2: when the pressure value of acquisition is greater than preset threshold, being judged as the air-breathing starting point of inspiratory event, calculate adjacent
Time interval between the air-breathing starting point of inspiratory event twice, further calculates out real-time respiratory rate；
Step 3: central processing unit is searched corresponding oxygen supply pulse width values according to real-time respiratory rate and is exported to oxygen supply
Control valve controls its opening time length, realizes constant flow pulse oxygen supply.
The constant flow pulse oxygen supply are as follows: total per minute identical to oxygen flow when different respiratory rates, respiratory rate is got over
Fast then oxygen supply pulse width values are smaller, the more slow then oxygen supply pulse width values of respiratory rate are bigger.
It is described it is total per minute correspond to pre-set multiple and different gear values to oxygen flow, and be stored in central processing
In unit.
Oxygen supply pulse width values corresponding to the respiratory rate are stored in central processing unit.
A kind of constant flow pulse oxygen supply device of portable oxygen machine, comprising: central processing unit and be separately connected with it
Oxygen supply control valve, micro-pressure type differential pressure pick-up.
The oxygen supply control valve is arranged on the oxygen cathete road between the oxygen container of portable oxygen mechanism of qi and oxygen exhaust connector,
For controlling the oxygen flow of oxygen exhaust connector；
The micro-pressure type differential pressure pick-up is arranged on the oxygen cathete road between oxygen supply control valve and oxygen exhaust connector, is used for
Respiratory pressure value in measurement oxygen therapy pipeline；
The central processing unit, according to the respiratory pressure value in the oxygen therapy pipeline of detection micro-pressure type differential pressure pick-up measurement
The opening time length for controlling oxygen supply control valve, to realize constant flow pulse oxygen supply.
The central processing unit uses microcontroller.
The invention has the following beneficial effects and advantage:
The present invention can guarantee portable oxygen machine under each gear, regardless of oxygen therapic patient respiratory rate be it is much, every point
The total flow of clock is fixed, and the big ability of small machine can be played.Respiratory rate regardless of oxygen therapic patient, can reach has
The oxygen uptake magnitude of effect.Both achieved the effect that save oxygen, in turn ensured the validity of oxygen uptake.
Detailed description of the invention
Fig. 1 is the constant flow pulse oxygen supply method flow diagram of portable oxygen machine of the invention；
Fig. 2 is the constant flow pulse oxygen supply device structural block diagram of portable oxygen machine of the invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and embodiments.
As shown in Figure 1, being the constant flow pulse oxygen supply method flow diagram of portable oxygen machine, the specific method is as follows: centre
Reason unit is by the respiratory pressure in high-precision minute-pressure differential pressure pick-up detection oxygen therapy pipeline, when sampling respiratory pressure value is greater than pre-
If when threshold value, being judged as air-breathing starting point, and then detect the time interval when time air-breathing starting point and last time air-breathing starting point, into
One step calculates real-time respiratory rate (beat/min), i.e., respiration rate per minute.According to the real-time respiratory rate obtained, root
According to constant flow pulse to gear where oxygen amount, oxygen supply pwm value corresponding to corresponding frequencies is inquired, and then controls oxygen supply control valve
Service time carry out oxygen supply.
The oxygen supply pwm value that the real-time respiratory rate of basis is inquired is preset in central processing unit, portable oxygen
The constant flow pulse of mechanism of qi is divided into 5 gears, pwm value corresponding to the corresponding one group of respiratory rate of each gear, in phase to oxygen amount
With under gear, respiratory rate is lower, and pwm value is bigger, and respiratory rate is higher, and pwm value is smaller.For concrete example, for shelves
Position 5, when respiratory rate is 20 beats/min, corresponding oxygen supply pwm value is 100ms, and the flow of output in corresponding 1 minute is
1044ml；When respiratory rate is 30 beats/min, corresponding oxygen supply pwm value is 64ms, and flow output in corresponding 1 minute is
1062ml guarantees flow error ± 10%.
As shown in Fig. 2, being the constant flow pulse oxygen supply device structural block diagram of portable oxygen machine of the invention, device includes oxygen
Gas is exported by the oxygen container of portable oxygen machine, is connect by pipeline with oxygen supply control valve input terminal, and oxygen supply control valve output end is logical
It crosses pipeline to connect with differential pressure pick-up, and is connect with oxygen exhaust connector.Oxygen supply control valve is used to control the oxygen of oxygen exhaust connector
Flow；Micro-pressure type differential pressure pick-up is used to measure the respiratory pressure value in oxygen supply pipeline；Central processing unit is according to the micro- of detection
The opening time length of the respiratory pressure value control oxygen supply control valve of die mould differential pressure pick-up measurement, to realize constant flow pulse
Oxygen supply.The central processing unit is using STMicw Electronics ARM Cortex M3 32 high-performance microcontrollers of kernel as core
Hardware circuit, oxygen supply control valve use the RHF206H80O of the Newman base of a fruit gram, and micro-pressure type differential pressure pick-up uses Honeywell
HSCDRRN001NDAA5 high-precision micro-pressure sensor.The present invention can guarantee portable oxygen machine under each gear, regardless of oxygen uptake
The respiratory rate of person be it is much, total flow is fixed per minute, and the respiratory rate regardless of oxygen therapic patient can reach effective
Oxygen uptake magnitude.Not only oxygen is saved, but also guarantees oxygen uptake validity.
Claims (6)
1. a kind of constant flow pulse oxygen supply method of portable oxygen machine, which comprises the following steps:
Step 1: central processing unit passes through the respiratory pressure value in micro-pressure type differential pressure pick-up acquisition oxygen therapy pipeline；
Step 2: when the pressure value of acquisition is greater than preset threshold, being judged as the air-breathing starting point of inspiratory event, calculating is adjacent twice
Time interval between the air-breathing starting point of inspiratory event, further calculates out real-time respiratory rate；
Step 3: central processing unit is searched corresponding oxygen supply pulse width values according to real-time respiratory rate and is exported to oxygen supply control
Valve controls its opening time length, realizes constant flow pulse oxygen supply.
2. a kind of constant flow pulse oxygen supply method of portable oxygen machine described in accordance with the claim 1, which is characterized in that described fixed
Flow pulse oxygen supply are as follows: total per minute identical to oxygen flow when different respiratory rates, the more fast then oxygen supply pulse of respiratory rate is wide
Angle value is smaller, the more slow then oxygen supply pulse width values of respiratory rate are bigger.
3. a kind of constant flow pulse oxygen supply method of portable oxygen machine according to claim 2, which is characterized in that described every
Minute total corresponds to pre-set multiple and different gear values to oxygen flow, and is stored in central processing unit.
4. according to a kind of constant flow pulse oxygen supply method of portable oxygen machine described in claim 1-3 any one, feature
It is, oxygen supply pulse width values corresponding to the respiratory rate are stored in central processing unit.
5. a kind of constant flow pulse oxygen supply device of portable oxygen machine characterized by comprising central processing unit and with its point
Oxygen supply control valve, the micro-pressure type differential pressure pick-up not connected；
The oxygen supply control valve is arranged on the oxygen cathete road between the oxygen container of portable oxygen mechanism of qi and oxygen exhaust connector, is used for
Control the oxygen flow of oxygen exhaust connector；
The micro-pressure type differential pressure pick-up is arranged on the oxygen cathete road between oxygen supply control valve and oxygen exhaust connector, for measuring
Cure by oxygen therapy the respiratory pressure value in pipeline；
The central processing unit is controlled according to the respiratory pressure value in the oxygen therapy pipeline of detection micro-pressure type differential pressure pick-up measurement
The opening time length of oxygen supply control valve, to realize constant flow pulse oxygen supply.
6. the constant flow pulse oxygen supply device of a kind of portable oxygen machine according to claim 5, which is characterized in that in described
Central Processing Unit uses microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810089371.XA CN110090341B (en) | 2018-01-30 | 2018-01-30 | Constant flow pulse oxygen supply method and device for portable oxygen machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810089371.XA CN110090341B (en) | 2018-01-30 | 2018-01-30 | Constant flow pulse oxygen supply method and device for portable oxygen machine |
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| Publication Number | Publication Date |
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| CN110090341A true CN110090341A (en) | 2019-08-06 |
| CN110090341B CN110090341B (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810089371.XA Active CN110090341B (en) | 2018-01-30 | 2018-01-30 | Constant flow pulse oxygen supply method and device for portable oxygen machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112546388A (en) * | 2020-12-04 | 2021-03-26 | 可孚医疗科技股份有限公司 | Self-adaptive pulse type oxygen generator and oxygen supply control method and device thereof |
| CN113350638A (en) * | 2021-04-19 | 2021-09-07 | 苏州氧巢科技有限公司 | Respiration induction oxygen saver and electromagnetic valve control method thereof |
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| CN201088762Y (en) * | 2007-10-24 | 2008-07-23 | 诸宝荣 | Digital oxygen flow quantity pulse-controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113350638A (en) * | 2021-04-19 | 2021-09-07 | 苏州氧巢科技有限公司 | Respiration induction oxygen saver and electromagnetic valve control method thereof |
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| Publication number | Publication date |
|---|---|
| CN110090341B (en) | 2022-02-11 |
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