CN105879171B - A kind of positive and negative pressure breathing machine - Google Patents
A kind of positive and negative pressure breathing machine Download PDFInfo
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- CN105879171B CN105879171B CN201610198944.3A CN201610198944A CN105879171B CN 105879171 B CN105879171 B CN 105879171B CN 201610198944 A CN201610198944 A CN 201610198944A CN 105879171 B CN105879171 B CN 105879171B
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- pressure
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- gas flow
- generation device
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- 230000029058 respiratory gaseous exchange Effects 0.000 title claims abstract description 61
- 230000001815 facial effect Effects 0.000 claims abstract description 31
- 210000004072 lung Anatomy 0.000 claims description 20
- 230000007812 deficiency Effects 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000009423 ventilation Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000009298 Trigla lyra Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000000981 epithelium Anatomy 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 201000002859 sleep apnea Diseases 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000009123 feedback regulation Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
- A61M16/0009—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The present invention provides a kind of positive and negative pressure breathing machines, including facial breathing equipment, master controller, and the positive pressure gas flow generation device and depression generator that are electrically connected respectively with the master controller；Positive pressure gas flow generation device and depression generator are connected with facial breathing equipment respectively；It being connected to when for being connected to the pipeline of positive pressure gas flow generation device and facial breathing equipment with the pipeline difference for being connected to depression generator and facial breathing equipment, pressure sensor is being respectively equipped with for being connected to the positive/negative-pressure generating means with the pipeline of facial breathing equipment and for being connected on the pipeline of the positive pressure gas flow generation device and facial breathing equipment.The deficiency that cannot be directly used to measure the air flue critical closing pressure for the normal population that air flue critical closing pressure is negative value the present invention overcomes existing noninvasive ventilator, the measurement of associated patient air flue critical closing pressure is carried out convenient for doctor, and can improve measurement accuracy.
Description
Technical field
The present invention relates to field of medical device, specifically a kind of positive and negative pressure breathing machine.
Background technology
Air flue critical closing pressure (Pcrit) refers to pressure when sleep state epithelium healing entirely shuts, and is considered as evaluation
Epithelium healing suffers from sleep apnea syndrome risk by the reliability index of kinetic characteristics, commonly used in assessment normal population
Just.
The air flue critical closing pressure of normal person be mostly be less than -8cmH2O, no matter therefore sleep when expiration or air-breathing, on
Air flue is in open state always.And the air flue critical closing pressure of patients with sleep apnea up to 0cmH2O even with
On.
And currently, noninvasive ventilator both domestic and external is mostly normal pressure lung ventilator, above-mentioned normal person cannot be directly measured
The air flue critical closing pressure of group.The air flue critical closing pressure of the part population can only be ventilated indirectly by Sforza methods according to maximum
Amount and piezometry curve tracing solve Pcrit.And Sforza methods measure very complicated, accuracy is low so that this finger of Pcrit
Being marked on clinically cannot preferably apply.This is in place of the deficiencies in the prior art.
Invention content ..
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of positive and negative pressure breathing machine, use
It is critical for the air flue of the normal population of negative value in overcoming existing noninvasive ventilator to cannot be directly used to measurement air flue critical closing pressure
It is closed the deficiency of pressure, and for improving the convenience measured patient airway critical closing pressure and precision.
In order to solve the above technical problems, the present invention provides a kind of positive and negative pressure breathing machines, including it is used to cover patient's mouth and nose
Facial breathing equipment, the master controller with operation interface and input/output interface, and respectively with the described master controller electricity
The positive pressure gas flow generation device and depression generator of connection；The positive pressure gas flow generation device and depression generator difference
It is connected with the facial breathing equipment by pipeline；For being connected to the positive pressure gas flow generation device and the face breathing
It is connected to when the pipeline of device is with the pipeline difference for being connected to the depression generator and the facial breathing equipment；For even
Lead to the positive pressure gas flow generation device and the facial breathing equipment pipeline be equipped with for measuring the pipeline inner pressure the
One pressure sensor, the pipeline for being connected to the depression generator and the facial breathing equipment are equipped with for measuring this
The second pressure sensor of pipeline inner pressure, the first pressure sensor, second pressure sensor respectively with the master
Controller is electrically connected.
Wherein, master controller is used to receive the detection signal of two pressure sensors and for positive pressure gas described in feedback regulation
The work of stream generation apparatus and depression generator, to ensure the stabilization of pressure in respective line.Specifically, two pressure sensor
On the one hand it for measuring the air pressure in its measured pipeline, and is respectively used to measuring signal reaching master controller, in main control
Under the action of device, the display that above-mentioned each measurement of correlation signal corresponds to atmospheric pressure value is carried out by the display screen in operation interface；It is another
Aspect is matched with the master controller, positive pressure gas flow generation device, depression generator, stablizes the air-flow pressure in each pipeline
Power.
When measuring the air flue critical closing pressure of patient, patient's mouth and nose are covered with face breathing equipment first, are adjusted for connecting
Lead to the pipeline of the positive pressure gas flow generation device and the facial breathing equipment（Call pipeline I in the following text）Conducting, the master controller
In the inner the pressure value I in preset pipeline I, control positive pressure gas flow generation device work give patient to carry out basis to base
Ventilation；Pipeline of the master controller also based on preset depression generator in it and the facial breathing equipment simultaneously（Under
Claim pipeline II）Interior pressure value II, control depression generator work, but the conducting of pipeline I at this time, pipeline II end.It waits for
After above-mentioned basis ventilation is completed, control piper II is connected, pipeline I ends, at this time master controller based in above-mentioned its in advance
Pressure value II in the pipeline II of setting continues control depression generator and works；Second pressure sensor detects in real time
Currently practical pressure in the pipeline II, and detection signal is sent to master controller in real time, master controller is current by it later
The signal value received（Call pressure value III in the following text）It is compared with the pressure value II in preset pipeline II：If pressure value III
Do not stop to change up and down on the basis of pressure value II, then illustrates still there is air-flow breathing at patient's mouth and nose（Those skilled in the art are equal
Know）, above-mentioned pipeline I is connected at this time（End pipeline II simultaneously）, after above-mentioned pressure value II is reset by master controller, weight
The multiple above operation, until finding the maximum value of air flue closure, the maximum value that air flue is closed is that the air flue of the patient is closed pressure；If
Pressure value III no longer changes equal to pressure value II, then air-flow stops at patient's mouth and nose, illustrates that patient airway is closed at this time, this
When repeat above-mentioned basis ventilation immediately, and based on current pressure value III, above-mentioned pressure value is reset by master controller
It after II, repeats above operation, until finding the maximum value of air flue closure, the maximum value that air flue is closed is that the air flue of the patient closes
Combined pressure.
In addition, lung ventilator of the present invention is not only convenient for the air flue critical closing pressure of doctor measuring patient, and without
When measuring the air flue critical closing pressure of patient, common lung ventilator can be considered as and used, it is vdiverse in function, it is more practical.
In addition, it is directly to be measured from that the air flue that the present invention is measured by positive and negative pressure breathing machine described herein, which is closed pressure,
, compared with prior art, data are more accurate.
The positive pressure gas flow generation device is sequentially filled by positive pressure tracheae, lung ventilator connecting tube and the face breathing
It sets and is connected, the depression generator is sequentially exhaled by negative pressure tracheae, the lung ventilator connecting tube with the face
Device is inhaled to be connected.
The positive pressure tracheae, negative pressure tracheae are connected with the lung ventilator connecting tube by triple valve.
The positive pressure gas flow generation device is connected with the depression generator by a pipeline with air inlet pipe, institute
The triple valve stated is connected by an escape pipe with the lung ventilator connecting tube.
The triple valve uses three-way magnetic valve.
The three-way magnetic valve is electrically connected by a control switch with the master controller.The control switch is used
In the conducting state of control three-way magnetic valve, in order to which doctor carries out air flue critical closing pressure information collection.
Filter screen is equipped in the air inlet pipe, for filtering the dust flowed into air inlet pipe in air-flow.
Filter screen is equipped in the escape pipe, for be filtered through escape pipe enter dust in the air-flow in shell,
Moisture and bacterium.
The positive pressure gas flow generation device uses positive pressure turbofan or positive pressure fan, the depression generator to adopt
With negative pressure turbine fan or negative-pressure air fan.
The facial breathing equipment is the mask with venthole.
Compared with the prior art, the advantages of the present invention are as follows：
(1) present invention includes for covering the facial breathing equipment of patient's mouth and nose, being connect with operation interface and input and output
Mouthful master controller, and the positive pressure gas flow generation device and depression generator that are electrically connected respectively with the master controller；
The positive pressure gas flow generation device and depression generator are connected by pipeline with the facial breathing equipment respectively；With
In being connected to the pipeline of the positive pressure gas flow generation device and the facial breathing equipment and be used to be connected to the depression generator
It is connected to when with the pipeline difference of the facial breathing equipment.For being connected to the positive pressure gas flow generation device and the face breathing
The pipeline of device is equipped with the first pressure sensor for measuring the pipeline inner pressure, for being connected to the depression generator
It is equipped with the second pressure sensor for measuring the pipeline inner pressure with the pipeline of the facial breathing equipment；The positive/negative-pressure is exhaled
Suction machine is directly used in the pressure value measured when patient airway is closed, can overcome noninvasive ventilator in the prior art that cannot directly survey
The deficiency that air flue critical closing pressure is negative value is measured, can also overcome in the prior art can only be logical according to maximum indirectly by Sforza methods
The deficiency of tolerance and piezometry curve diagram patient airway critical closing pressure, and because passing through positive and negative pressure breathing described herein
The air flue that machine measures is closed pressure and is directly measured from, and data are more accurate；In addition, compared with the prior art, using more
It is convenient, it is more practical.
(2) lung ventilator of the present invention is not only convenient for the air flue critical closing pressure of doctor measuring patient, and is being not used in
When measuring the air flue critical closing pressure of patient, common lung ventilator can be considered as and used, it is vdiverse in function, convenient for storage, and
It is economical and practical.
It can be seen that compared with prior art, the present invention with substantive distinguishing features outstanding and significant progress, implement
Advantageous effect be also obvious.
Description of the drawings
Fig. 1 is the structural schematic diagram of positive and negative pressure breathing machine of the present invention.
Wherein：1 is positive pressure gas flow generation device, and 2 be depression generator, and 3 be master controller, and 4 be positive pressure tracheae, and 5 are
Negative pressure tracheae, 6 be first pressure sensor, and 7 be second pressure sensor, and 8 be triple valve, and 9 be lung ventilator connecting tube, and 10 be face
Portion's breathing equipment, 11 be filter screen, and 12 be air inlet pipe, and 13 be escape pipe, and 14 be filter screen, and 15 switch in order to control.
Specific implementation mode
To keep technical scheme of the present invention and advantage clearer, below in conjunction with the attached drawing of the present invention, to the present invention's
Technical solution is clearly and completely described.
As shown in Figure 1, a kind of positive and negative pressure breathing machine of the present invention, includes the facial breathing equipment for covering patient's mouth and nose
10, the master controller 3 with operation interface and input/output interface, and be electrically connected just with the master controller 3 respectively
It calms the anger stream generation apparatus 1 and depression generator 2.The positive pressure gas flow generation device 1 and depression generator 2 passes through respectively
Pipeline is connected with the facial breathing equipment 10, for being connected to the positive pressure gas flow generation device 1 and the face breathing
The pipeline of device 10（Call pipeline I in the following text）With the pipeline for being connected to the depression generator 2 and the facial breathing equipment 10
（Call pipeline II in the following text）Asynchronously it is connected to.The pipeline I is equipped with the first pressure sensor for measuring pressure in the pipeline I
6, the pipeline II is equipped with the second pressure sensor 7 for measuring pressure in the pipeline II, the first pressure sensor
6, second pressure sensor 7 is electrically connected with the master controller 3 respectively.
The positive pressure gas flow generation device 1 sequentially passes through positive pressure tracheae 4, lung ventilator connecting tube 9（To protrude the structure,
It is represented by dashed line in the accompanying drawings）It is connected with the facial breathing equipment 10, the depression generator 2 sequentially passes through
Negative pressure tracheae 5, the lung ventilator connecting tube 9 are connected with the facial breathing equipment 10.The positive pressure tracheae 4 and negative
Air pipe 5 is connected by a triple valve 8 with the lung ventilator connecting tube 9, the triple valve 8 be three-way magnetic valve, described three
Three-way electromagnetic valve is electrically connected with the master controller 3.In use, by the described three-way magnetic valve control pipeline I with
The pipeline II is connected to when different（When in use, it is connected in a manner of selecting the 2 of a connection and selecting 1）.The threeway electromagnetism
Control switch 15 is equipped between valve and the master controller 3.The control switch 15 uses toggle switch.The control is opened
The use for closing 15, convenient for doctor according to the flexible switching for carrying out pipeline to the practical measurement situation of patient.
In the present embodiment, the outlet of the air inlet and the depression generator 2 of the positive pressure gas flow generation device 1
Mouth is connected by a pipeline with air inlet pipe 12, and the outlet of the three-way magnetic valve is exhaled by an escape pipe 13 with described
Suction machine connecting tube 9 is connected.
Wherein in the present embodiment, the lung ventilator connecting tube 9 is detachably connected with the facial breathing equipment 10, just
In the actual conditions according to patient, sizeable facial breathing equipment 10, using flexible are replaced.
Filter screen 11 is equipped in the air inlet pipe 12, for filtering the dust in stream inflow stream.
Filter screen 14 is equipped in the escape pipe 13, for filter dust in stream inflow housing inner tube road in air-flow,
Moisture and bacterium, to increase the service life of positive and negative pressure breathing machine of the present invention.
Wherein in this embodiment, the positive pressure gas flow generation device 1 uses positive pressure turbofan, described
It is the oral nose mask with venthole that depression generator 2, which uses negative pressure turbine fan, the facial breathing equipment 10,.
In addition, in the air flue critical closing pressure that need not measure patient, can the present invention be used as common lung ventilator makes
With.The perfect function of existing lung ventilator of the present invention, avoids lung ventilator and for measuring patient airway critical closing pressure
The independent of pertinent instruments is introduced and is stored respectively, has not only been saved cost, has been also ad save parking space.
When measuring the air flue critical closing pressure of patient using this positive and negative pressure breathing machine, trouble is covered with face breathing equipment first
Person's mouth and nose adjust pipeline I and are connected（Pipeline II is ended at this time）, the master controller base preset pipeline I in the inner
Interior pressure value I, control positive pressure gas flow generation device work, i.e., carry out basic ventilation to patient（It ventilates to patient falls asleep and enters
II phase slept）；Master controller controls depression generator also based on the pressure value II in preset pipeline in it II simultaneously
It works, but pipeline II is in cut-off state at this time.After waiting for that above-mentioned basis ventilation is completed, control piper II is connected（At this time
Pipeline I is ended）（The connection of above-mentioned pipeline II is carried out at patient expiration end）, at this time master controller based in above-mentioned its in advance
Pressure value II in the pipeline II of setting continues control depression generator and works；Second pressure sensor detects in real time
Currently practical pressure in the pipeline II, and detection signal is sent to master controller in real time, master controller is current by it later
The signal value received（Currently practical pressure i.e. in above-mentioned pipeline II, calls pressure value III in the following text）In preset pipeline II
Pressure value II be compared：If the fluctuation up and down on the basis of pressure value II of pressure value III, illustrates still have at patient's mouth and nose
Air-flow breathes（Those skilled in the art know）, above-mentioned pipeline I is connected at this time（There is pipeline II to be ended simultaneously）, pass through main control
It after thinking highly of the above-mentioned pressure value II of new settings, repeats above operation, until finding the maximum value of air flue closure, air flue is closed most
Big value is that the air flue of the patient is closed pressure；If the pressure value III no longer changes equal to pressure value II, at patient's mouth and nose
Air-flow stops, and illustrates that patient airway is closed at this time, repeats above-mentioned basis ventilation immediately at this time, and based on current pressure value
III, it after above-mentioned pressure value II is reset by master controller, repeats above operation, until finding the maximum of air flue closure
Value, the maximum value that air flue is closed are that the air flue of the patient is closed pressure.
The assay method of traditional air flue closure pressure is again：If it is positive pressure that air flue, which is closed pressure, can be straight with positive pressure respirator
It connects and measures；But if air flue closure pressure is negative value, pressure and air velocity can only be measured by Sforza fados time, drawn
Pressure current curve, it is zero then to extend curve to flow velocity, and the pressure of this point is closed as air flue and is pressed.But the compliance of air flue
Influenced by polylith muscle and tongue body etc., make pressure flow velocity not and be linear line relationship, the artificial extension error of curve compared with
Greatly.
Therefore, the gas that air flue is closed the patient that pressure is negative value is directly measured in view of positive and negative pressure breathing function of the present invention
Road is closed pressure, and the present invention largely avoids the dry of artificial subjective factor when other complicated factors and later stage calculation processing
It disturbs, accuracy is relatively high.
Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to aforementioned implementation
Invention is explained in detail for mode, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each
Technical solution recorded in embodiment is modified or equivalent replacement of some of the technical features；And these are repaiied
Change or replaces, the range for each embodiment technical solution of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of positive and negative pressure breathing machine, it is characterised in that：Include for covering the facial breathing equipment of patient's mouth and nose, with operation
The master controller at interface and input/output interface, and the positive pressure gas flow generation device that is electrically connected respectively with the master controller and
Depression generator；The positive pressure gas flow generation device and depression generator are breathed by pipeline and the face respectively
Device is connected；The positive pressure gas flow generation device is sequentially exhaled by positive pressure tracheae, lung ventilator connecting tube and the face
It inhales device to be connected, the depression generator sequentially passes through negative pressure tracheae, the lung ventilator connecting tube and the face
Portion's breathing equipment is connected；The positive pressure tracheae, negative pressure tracheae are connected with the lung ventilator connecting tube by triple valve；Institute
The triple valve stated uses three-way magnetic valve；The three-way magnetic valve is electrically connected by a control switch with the master controller
It connects；Pipeline for being connected to the positive pressure gas flow generation device and the facial breathing equipment occurs with for being connected to the negative pressure
It is connected to when device is with the pipeline difference of the facial breathing equipment；For being connected to the positive pressure gas flow generation device and the face
The pipeline of breathing equipment is equipped with the first pressure sensor for measuring the pipeline inner pressure, and first pressure sensor setting exists
Between the positive pressure gas flow generation device and the three-way magnetic valve, exhaled for being connected to the depression generator and the face
The pipeline of device is inhaled equipped with the second pressure sensor for measuring the pipeline inner pressure, and second pressure sensor is arranged in institute
State between depression generator and the three-way magnetic valve, the first pressure sensor, second pressure sensor respectively with
The master controller electrical connection.
2. positive and negative pressure breathing machine according to claim 1, it is characterised in that：The positive pressure gas flow generation device with it is described
Depression generator by one with air inlet pipe pipeline be connected, the triple valve passes through an escape pipe and the breathing
Machine connecting tube is connected.
3. positive and negative pressure breathing machine according to claim 2, it is characterised in that：Filter screen is equipped in the air inlet pipe.
4. positive and negative pressure breathing machine according to claim 2, it is characterised in that：Filter screen is equipped in the escape pipe.
5. positive and negative pressure breathing machine according to claim 1 or 2, it is characterised in that：The positive pressure gas flow generation device is adopted
With positive pressure turbofan or positive pressure fan, the depression generator uses negative pressure turbine fan or negative-pressure air fan.
6. positive and negative pressure breathing machine according to claim 1 or 2, it is characterised in that：The facial breathing equipment be with
The mask of venthole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198944.3A CN105879171B (en) | 2016-04-01 | 2016-04-01 | A kind of positive and negative pressure breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198944.3A CN105879171B (en) | 2016-04-01 | 2016-04-01 | A kind of positive and negative pressure breathing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105879171A CN105879171A (en) | 2016-08-24 |
| CN105879171B true CN105879171B (en) | 2018-09-14 |
Family
ID=57012057
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610198944.3A Active CN105879171B (en) | 2016-04-01 | 2016-04-01 | A kind of positive and negative pressure breathing machine |
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| Country | Link |
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| CN (1) | CN105879171B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200960346Y (en) * | 2006-10-13 | 2007-10-17 | 赵子文 | Unwound positive and negative pressure respiratory assistance device |
| CN101505820A (en) * | 2006-07-13 | 2009-08-12 | Ric投资有限责任公司 | Delivery of positive and negative pressure ventilation |
| CN103330962A (en) * | 2013-07-08 | 2013-10-02 | 北京航空航天大学 | Sputum suction device with breath simulating function |
| CN204910377U (en) * | 2015-07-01 | 2015-12-30 | 北京雅果科技有限公司 | Take nothing of bionical row of phlegm function to create breathing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007054829A2 (en) * | 2005-09-26 | 2007-05-18 | Innovent Medical Solutions, Inc. | Combined ventilator inexsufflator |
-
2016
- 2016-04-01 CN CN201610198944.3A patent/CN105879171B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101505820A (en) * | 2006-07-13 | 2009-08-12 | Ric投资有限责任公司 | Delivery of positive and negative pressure ventilation |
| CN200960346Y (en) * | 2006-10-13 | 2007-10-17 | 赵子文 | Unwound positive and negative pressure respiratory assistance device |
| CN103330962A (en) * | 2013-07-08 | 2013-10-02 | 北京航空航天大学 | Sputum suction device with breath simulating function |
| CN204910377U (en) * | 2015-07-01 | 2015-12-30 | 北京雅果科技有限公司 | Take nothing of bionical row of phlegm function to create breathing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105879171A (en) | 2016-08-24 |
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Effective date of registration: 20240517 Address after: 100044 No. 11 South Main Street, Xicheng District, Beijing, Xizhimen Patentee after: PEKING UNIVERSITY PEOPLE'S Hospital Country or region after: China Address before: 256603 No. two, No. 661, the Yellow River Road, Shandong, Binzhou Patentee before: BINZHOU MEDICAL University Hospital Country or region before: China |