CN104623798A - Piston gas pressure and flow control valve of breathing machine and working principle of piston gas pressure and flow control valve - Google Patents
Piston gas pressure and flow control valve of breathing machine and working principle of piston gas pressure and flow control valve Download PDFInfo
- Publication number
- CN104623798A CN104623798A CN201510098291.7A CN201510098291A CN104623798A CN 104623798 A CN104623798 A CN 104623798A CN 201510098291 A CN201510098291 A CN 201510098291A CN 104623798 A CN104623798 A CN 104623798A
- Authority
- CN
- China
- Prior art keywords
- inner core
- intermediate cylinder
- control valve
- groove
- gas pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a piston gas pressure and flow control valve of a breathing machine and a working principle of the piston gas pressure and flow control valve. The piston gas pressure and flow control valve is characterized in that a middle barrel is mounted in an outer barrel, an inner barrel is mounted in the middle barrel, the middle barrel vertically movably sleeves the inner barrel, three gas chambers are formed after gaps between the outer barrel and the middle barrel and the inner barrel are divided, a plurality of circles of electromagnetic wires are wound at the upper end and the lower end of the outer barrel, and a breathing connecting pipe is arranged in the middle of the outer barrel; a pair of middle barrel grooves is symmetrically formed in the surface of the middle barrel, and two magnetic rings are respectively mounted at two ends of the middle barrel; two pairs of inner barrel grooves are symmetrically formed in the surface of the inner barrel, and an inner hole of the inner barrel is divided into an upper gas chamber and a lower gas chamber by a blocking distance piece. The piston gas pressure and flow control valve and the working principle have the advantages that the middle barrel can be repositioned under the mutual effects of electromagnetic coils and the magnetic rings, and coincidence areas of the middle barrel grooves and the inner barrel grooves are different from one another, so that opening and closing degrees can be determined, and the flow and the pressure of gas flow which flows into breathing pipelines for patients can be regulated.
Description
Technical field
The present invention relates to a kind of technical field of respirator, particularly relate to a kind of piston type respirator gas pressure flow control valve and operation principle thereof.
Background technology
Along with growth in the living standard and scientific and technical progress, respirator has been come into ordinary citizen family from hospital.Respirator is that a kind of normal physiological that can replace, control or change people is breathed, and increases pulmonary ventilation volume, improves respiratory function, alleviate work of breathing consumption, save the device of heart reservation ability; Its mechanism of action is for autonomous respiration campaign that is auxiliary or control patient, to reach the gas exchange in lung, reduces human body respiration flesh power consumption, is beneficial to the recovery of respiratory function, also can be referred to as mechanical ventilating machine clinically.Clinically, respirator is used for the treatment of the various diseases such as chronic obstructive pulmonary disease (COPD), sleep apnea syndrome (SAS), Bronchial Asthmas, patient with general anesthesia waking up period Breathing Suppotion.
China SAS patient is more than 2,000 ten thousand.Its sickness rate in adult is very high, and especially its sickness rate of old people is about 50%.Its clinical manifestation is snoring during sleep, the hypopnea of recurrent exerbation or asphyxia.SAS has a strong impact on patient and other people sleep quality.Severe patient can cause the complication of the important vital organ such as cardio-cerebral-pulmo and kidney.Can adopt the methods such as continuous positive airway pressure, behavior therapy, operative treatment and Drug therapy to the treatment of SAS, wherein continuous positive airway pressure is treated the SAS having become generally acknowledged and is treated method the most effective and safe.
Gas in air is pressed into respirator internal duct by the main turbofan that adopts of supplying gas of current noninvasive ventilator, again by breather valve by pneumatic convey to hose, the visor portion of patient is transported to again, to reach effect patient being applied to gas pressure by flexible pipe.When patient is in suction condition, gases at high pressure are accessed patient respiratory pipeline by valve body, provide patient breaths.When patient is in expiration state, gas flows to the direction of breather valve from face shield, and at this moment valve body switches, and is communicated by the cavity of patient end with air vent, by the gas of exhalation discharged to air.The defects such as but the breather valve of prior art control electric machine speed regulation is frequent, can produce larger noise, and electric machine speed regulation exists rotary inertia greatly simultaneously, the serious sluggishness of speed governing.
Summary of the invention
In view of this, the present invention proposes a kind of piston type respirator gas pressure flow control valve and operation principle thereof, controls motor noise large, the problem that transmission inertia is large with the breather valve solving above-mentioned prior art.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of piston type respirator gas pressure flow control valve, comprises urceolus, intermediate cylinder and inner core, wherein,
Described urceolus is the cylinder type hollow cylinder of a both ends open, and the two ends up and down of described urceolus are arranged with some circle electromagnetic wires, solenoid and lower solenoid in formation, and the middle position being positioned at described urceolus is provided with breathing connection tube;
Described intermediate cylinder is the cylinder type hollow cylinder of a both ends open, and the surface symmetry of described intermediate cylinder offers a pair intermediate cylinder groove, and a magnet ring is respectively installed at the two ends of described intermediate cylinder, comprises upper magnetic ring and lower magnet ring;
The cylinder type hollow cylinder of described inner core one both ends open, the surface symmetry of described inner core offers two pairs of inner core grooves, comprises inner core groove and lower inner core groove, and the endoporus of described inner core blocks partition by one and is divided into upper chamber and lower chamber;
Described intermediate cylinder is installed in described urceolus, described inner tube installation is in described intermediate cylinder, described intermediate cylinder is moving up and down to be sheathed on outside described inner core, space between described urceolus and described intermediate cylinder, described inner core forms air chamber, described intermediate cylinder groove on described intermediate cylinder can seal the described upper inner core groove on described inner core and described lower inner core groove and open, and controls the size of gas pressure flow to realize control valve.
Above-mentioned piston type respirator gas pressure flow control valve, wherein, the diameter of bore of described intermediate cylinder, slightly larger than the outside diameter of described inner core, makes described intermediate cylinder to move up and down on the outer round surface of described inner core easily.
Above-mentioned piston type respirator gas pressure flow control valve, wherein, the axis of the symmetrical described intermediate cylinder of two intermediate cylinder grooves on described intermediate cylinder arranges and is positioned at the middle position of described intermediate cylinder outer round surface.
Above-mentioned piston type respirator gas pressure flow control valve, wherein, be sheathed on the outside diameter of diameter of bore slightly larger than described intermediate cylinder of two described magnet rings at described intermediate cylinder two ends, make described magnet ring and described intermediate cylinder interference fit, described magnet ring is firmly sheathed on the outer round surface of described intermediate cylinder.
Above-mentioned piston type respirator gas pressure flow control valve, wherein, the axis of the symmetrical described inner core of two couples described inner core groove of described inner core is arranged, and described blocking-up partition is divided into inner core groove described in each a pair up and down by two to described inner core groove.
Above-mentioned piston type respirator gas pressure flow control valve, wherein, the diameter of described blocking-up partition, slightly larger than circular diameter in described inner core, makes described blocking-up partition firmly be arranged in the endoporus of described inner core.
Also comprise a kind of operation principle of control valve, wherein, described operation principle is as follows:
The upper end JA(junction ambient) air of described control valve, the lower end of described control valve connects gases at high pressure, and the described solenoid at described urceolus two ends is energized respectively;
When described upper solenoid energising, move up under the effect of described upper magnetic ring solenoid on described, described intermediate cylinder groove is by completely closed for described upper inner core groove, described lower inner core groove is opened, gases at high pressure enter described lower chamber, described air chamber is entered, finally by described breathing connection tube for patient respiratory by described lower inner core groove;
When described lower solenoid energising, described lower magnet ring moves down under the effect of described lower solenoid, described intermediate cylinder groove is by completely closed for described lower inner core groove, described upper inner core groove is opened, the gas that patient breathes out enters described upper inner core groove by described air chamber, is discharged in ambient air finally by described upper chamber;
When described upper solenoid and described lower solenoid are energized simultaneously, the described intermediate cylinder groove of described intermediate cylinder is placed in the middle, described upper inner core groove and described lower inner core groove is made all to be closed a part, gases at high pressure by described lower chamber, described lower inner core groove, described air chamber and described breathing connection tube for patient respiratory, simultaneously, the gas that patient breathes out, by described air chamber, described upper inner core groove and described upper chamber, is finally discharged in ambient air.
The present invention is owing to have employed above-mentioned technology, and the good effect of generation is:
The present invention, by the interaction of solenoid and magnet ring, regulates the position of intermediate cylinder, the overlapping area of intermediate cylinder groove and internal layer cylinder groove different, determines to open and closed degree, can regulate flow and the pressure size of the air-flow entering patient respiratory pipeline.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of urceolus in a kind of piston type respirator gas pressure flow control valve of the present invention and operation principle thereof;
Fig. 2 is the structural representation of intermediate cylinder in a kind of piston type respirator gas pressure flow control valve of the present invention and operation principle thereof;
Fig. 3 is the structural representation of inner core in a kind of piston type respirator gas pressure flow control valve of the present invention and operation principle thereof;
Fig. 4 is the sectional view of inner core in a kind of piston type respirator gas pressure flow control valve of the present invention and operation principle thereof;
The structural representation of control valve when Fig. 5 is upper solenoid energising in the operation principle of control valve in the present invention;
The structural representation of control valve when Fig. 6 is lower solenoid energising in the operation principle of control valve in the present invention;
Fig. 7 is the structural representation of control valve when power-on and power-off magnetic coil is all energized in the operation principle of control valve in the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, but not as limiting to the invention.
Embodiment one
Incorporated by reference to shown in Fig. 1 to Fig. 7, a kind of piston type respirator gas pressure flow control valve of the present invention, comprises urceolus 401, intermediate cylinder 301 and inner core 201, wherein,
As shown in Figure 1, urceolus 401 is the cylinder type hollow cylinder of a both ends open, and the two ends up and down of urceolus 401 are arranged with some circle electromagnetic wires, solenoid 101 and lower solenoid 102 in formation, and the middle position being positioned at urceolus 401 is provided with breathes connection tube 500;
As shown in Figure 2, intermediate cylinder 301 is the cylinder type hollow cylinder of a both ends open, and the surface symmetry of intermediate cylinder 301 offers a pair intermediate cylinder groove 304, and a magnet ring is respectively installed at the two ends of intermediate cylinder 301, comprises upper magnetic ring 302 and lower magnet ring 303;
As shown in Figure 3 and Figure 4, the cylinder type hollow cylinder of inner core 201 1 both ends open, the surface symmetry of inner core 201 offers two pairs of inner core grooves, comprises inner core groove 203 and lower inner core groove 204, and the endoporus of inner core 201 blocks partition 201 by one and is divided into upper chamber 206 and lower chamber 205;
Intermediate cylinder 301 is installed in urceolus 401, inner core 201 is installed in intermediate cylinder 301, intermediate cylinder 301 is moving up and down to be sheathed on outside inner core 201, space between urceolus 401 and intermediate cylinder 301, inner core 201 forms air chamber 402, intermediate cylinder groove 304 on intermediate cylinder 301 can seal the upper inner core groove 203 on inner core 201 and lower inner core groove 204 and open, and controls the size of gas pressure flow to realize control valve.
The present invention also has following embodiment on the basis of the above, please continue see shown in Fig. 1 to Fig. 7,
In further embodiment of the present invention, the diameter of bore of intermediate cylinder 301, slightly larger than the outside diameter of inner core 201, makes intermediate cylinder 301 to move up and down on the outer round surface of inner core 201 easily.
In further embodiment of the present invention, the axis of the symmetrical intermediate cylinder 301 of two intermediate cylinder grooves 304 on intermediate cylinder 301 arranges and is positioned at the middle position of intermediate cylinder 301 outer round surface.
In further embodiment of the present invention, be sheathed on the outside diameter of diameter of bore slightly larger than intermediate cylinder 301 of two magnet rings at intermediate cylinder 301 two ends, make magnet ring and intermediate cylinder 301 interference fit, magnet ring is firmly sheathed on the outer round surface of intermediate cylinder 301.
In further embodiment of the present invention, the axis of the symmetrical inner core 201 of two pairs of inner core grooves of inner core 201 is arranged, and two pairs of inner core grooves are divided into each a pair inner core groove up and down by blocking-up partition 202.
In further embodiment of the present invention, the diameter blocking partition 202, slightly larger than circular diameter in inner core 201, makes to block partition 202 and is firmly arranged in the endoporus of inner core 201.
User can further be familiar with characteristic of the present invention and function according to following explanation,
Also comprise a kind of operation principle of control valve, wherein, operation principle is as follows:
The upper end JA(junction ambient) air of control valve, the lower end of control valve connects gases at high pressure, and the solenoid at urceolus 401 two ends is energized respectively;
After three cylinders have been assembled, form three air chambers altogether, as shown in Figure 5, lower chamber 205 is communicated with air chamber 402 by lower inner core groove 204, and upper chamber 206 is communicated with air chamber 402 by upper inner core groove 203.Gases at high pressure are communicated with lower chamber 205, and breathe connection tube 500 and be communicated with air chamber 402, upper chamber 206 is communicated with ambient air.Intermediate cylinder 301 two ends are provided with magnet ring 302,303, and intermediate cylinder 301 can move back and forth under the effect of solenoid 101,102.
When being in the position shown in Fig. 5, upper inner core groove 203 is completely enclosed, and lower inner core groove 204 is opened completely, and gases at high pressure enter lower chamber 205, by lower inner core groove 204, enters air chamber 402, enters and breathes connection tube 500, finally for patient respiratory.
When being in the position shown in Fig. 6, lower inner core groove 204 is completely enclosed, upper inner core groove 203 is opened completely, gases at high pressure are also completely enclosed after entering lower chamber 205, the breathing connection tube 500 be connected with air chamber 402 does not have gases at high pressure to export, and the gas that patient breathes out can be discharged in air by upper inner core groove 203 via air chamber 402.
When being in the position shown in Fig. 7, lower inner core groove 204 is partially enclosed, and upper inner core groove 203 part is opened, and gases at high pressure enter lower chamber 205, and a part enters air chamber 402 by lower inner core groove 204, enters and breathes connection tube 500.Another part enters upper chamber 206 by upper inner core groove 203, is discharged in air.
Embodiment two
In the present embodiment, the basic structure of piston type respirator gas pressure flow control valve is identical with embodiment one, difference is, a urceolus one end in the present embodiment has solenoid, an intermediate cylinder one end has magnet ring, and the shape of intermediate cylinder groove and inner core groove can be circular, oval, square, rhombus or other arbitrary shapes, can change according to different demands, above-mentioned different structure and shape also can reach technique effect as a kind of in embodiment, because detailed description of the invention is identical with embodiment one, be not repeated herein.
The foregoing is only preferred embodiment of the present invention; not thereby embodiments of the present invention and protection domain is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilizations description of the present invention and diagramatic content and apparent change obtain in protection scope of the present invention.
Claims (7)
1. a piston type respirator gas pressure flow control valve, comprises urceolus, intermediate cylinder and inner core, it is characterized in that,
Described urceolus is the cylinder type hollow cylinder of a both ends open, and the two ends up and down of described urceolus are arranged with some circle electromagnetic wires, solenoid and lower solenoid in formation, and the middle position being positioned at described urceolus is provided with breathing connection tube;
Described intermediate cylinder is the cylinder type hollow cylinder of a both ends open, and the surface symmetry of described intermediate cylinder offers a pair intermediate cylinder groove, and a magnet ring is respectively installed at the two ends of described intermediate cylinder, comprises upper magnetic ring and lower magnet ring;
The cylinder type hollow cylinder of described inner core one both ends open, the surface symmetry of described inner core offers two pairs of inner core grooves, comprises inner core groove and lower inner core groove, and the endoporus of described inner core blocks partition by one and is divided into upper chamber and lower chamber;
Described intermediate cylinder is installed in described urceolus, described inner tube installation is in described intermediate cylinder, described intermediate cylinder is moving up and down to be sheathed on outside described inner core, space between described urceolus and described intermediate cylinder, described inner core forms air chamber, described intermediate cylinder groove on described intermediate cylinder can seal the described upper inner core groove on described inner core and described lower inner core groove and open, and controls the size of gas pressure flow to realize control valve.
2. piston type respirator gas pressure flow control valve according to claim 1, it is characterized in that, the diameter of bore of described intermediate cylinder, slightly larger than the outside diameter of described inner core, makes described intermediate cylinder to move up and down on the outer round surface of described inner core easily.
3. piston type respirator gas pressure flow control valve according to claim 1, is characterized in that, the axis of the symmetrical described intermediate cylinder of two intermediate cylinder grooves on described intermediate cylinder arranges and is positioned at the middle position of described intermediate cylinder outer round surface.
4. piston type respirator gas pressure flow control valve according to claim 1, it is characterized in that, be sheathed on the outside diameter of diameter of bore slightly larger than described intermediate cylinder of two described magnet rings at described intermediate cylinder two ends, make described magnet ring and described intermediate cylinder interference fit, described magnet ring is firmly sheathed on the outer round surface of described intermediate cylinder.
5. piston type respirator gas pressure flow control valve according to claim 1, it is characterized in that, the axis of the symmetrical described inner core of two couples described inner core groove of described inner core is arranged, and described blocking-up partition is divided into inner core groove described in each a pair up and down by two to described inner core groove.
6. piston type respirator gas pressure flow control valve according to claim 1, is characterized in that, the diameter of described blocking-up partition, slightly larger than circular diameter in described inner core, makes described blocking-up partition firmly be arranged in the endoporus of described inner core.
7. an operation principle for control valve, is characterized in that, described operation principle is as follows:
The upper end JA(junction ambient) air of described control valve, the lower end of described control valve connects gases at high pressure, and the described solenoid at described urceolus two ends is energized respectively;
When described upper solenoid energising, move up under the effect of described upper magnetic ring solenoid on described, described intermediate cylinder groove is by completely closed for described upper inner core groove, described lower inner core groove is opened, gases at high pressure enter described lower chamber, described air chamber is entered, finally by described breathing connection tube for patient respiratory by described lower inner core groove;
When described lower solenoid energising, described lower magnet ring moves down under the effect of described lower solenoid, described intermediate cylinder groove is by completely closed for described lower inner core groove, described upper inner core groove is opened, the gas that patient breathes out enters described upper inner core groove by described air chamber, is discharged in ambient air finally by described upper chamber;
When described upper solenoid and described lower solenoid are energized simultaneously, the described intermediate cylinder groove of described intermediate cylinder is placed in the middle, described upper inner core groove and described lower inner core groove is made all to be closed a part, gases at high pressure by described lower chamber, described lower inner core groove, described air chamber and described breathing connection tube for patient respiratory, simultaneously, the gas that patient breathes out, by described air chamber, described upper inner core groove and described upper chamber, is finally discharged in ambient air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510098291.7A CN104623798A (en) | 2015-03-05 | 2015-03-05 | Piston gas pressure and flow control valve of breathing machine and working principle of piston gas pressure and flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510098291.7A CN104623798A (en) | 2015-03-05 | 2015-03-05 | Piston gas pressure and flow control valve of breathing machine and working principle of piston gas pressure and flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104623798A true CN104623798A (en) | 2015-05-20 |
Family
ID=53203333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510098291.7A Pending CN104623798A (en) | 2015-03-05 | 2015-03-05 | Piston gas pressure and flow control valve of breathing machine and working principle of piston gas pressure and flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104623798A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109239264A (en) * | 2018-08-31 | 2019-01-18 | 北京理加联合科技有限公司 | Gas analyzer pressure regulating mechanism |
| CN113217700A (en) * | 2020-01-21 | 2021-08-06 | 德尔格制造股份两合公司 | Valve device with shut-off unit and method for operating respirator having the same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605034A (en) * | 1983-10-25 | 1986-08-12 | Citizen Watch Co., Ltd. | Gas flow control system for an anesthesia apparatus |
| CN201888981U (en) * | 2010-07-20 | 2011-07-06 | 浙江玉升医疗器械股份有限公司 | Breathing valve for breathing machine |
| CN102284120A (en) * | 2011-08-01 | 2011-12-21 | 沈哲如 | Miniature electromagnetic breather valve |
| CN102406976A (en) * | 2011-09-28 | 2012-04-11 | 于邦仲 | Respiratory flow rhythm control gas valve |
| CN102500030A (en) * | 2011-10-13 | 2012-06-20 | 苏州凯迪泰医学科技有限公司 | Electromagnetically controlled tee-joint flow valve and medical breathing machine |
| CN203494029U (en) * | 2013-09-27 | 2014-03-26 | 杭州乔辉电子科技有限公司 | Medical proportional oxygen respiratory valve |
| CN203829449U (en) * | 2014-02-26 | 2014-09-17 | 沈哲如 | Electromagnetic breather valve |
-
2015
- 2015-03-05 CN CN201510098291.7A patent/CN104623798A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605034A (en) * | 1983-10-25 | 1986-08-12 | Citizen Watch Co., Ltd. | Gas flow control system for an anesthesia apparatus |
| CN201888981U (en) * | 2010-07-20 | 2011-07-06 | 浙江玉升医疗器械股份有限公司 | Breathing valve for breathing machine |
| CN102284120A (en) * | 2011-08-01 | 2011-12-21 | 沈哲如 | Miniature electromagnetic breather valve |
| CN102406976A (en) * | 2011-09-28 | 2012-04-11 | 于邦仲 | Respiratory flow rhythm control gas valve |
| CN102500030A (en) * | 2011-10-13 | 2012-06-20 | 苏州凯迪泰医学科技有限公司 | Electromagnetically controlled tee-joint flow valve and medical breathing machine |
| CN203494029U (en) * | 2013-09-27 | 2014-03-26 | 杭州乔辉电子科技有限公司 | Medical proportional oxygen respiratory valve |
| CN203829449U (en) * | 2014-02-26 | 2014-09-17 | 沈哲如 | Electromagnetic breather valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109239264A (en) * | 2018-08-31 | 2019-01-18 | 北京理加联合科技有限公司 | Gas analyzer pressure regulating mechanism |
| CN109239264B (en) * | 2018-08-31 | 2021-03-05 | 北京理加联合科技有限公司 | Pressure regulating structure of gas analyzer |
| CN113217700A (en) * | 2020-01-21 | 2021-08-06 | 德尔格制造股份两合公司 | Valve device with shut-off unit and method for operating respirator having the same |
| CN113217700B (en) * | 2020-01-21 | 2023-04-07 | 德尔格制造股份两合公司 | Valve device with shut-off unit and method for operating respirator having the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9616194B2 (en) | Ventilation mask with integrated piloted exhalation valve and method of ventilating a patient using the same | |
| CN201823138U (en) | Noninvasive respirator device | |
| CN204017070U (en) | A kind of device for the treatment of sleep apnea syndrome | |
| CN201888981U (en) | Breathing valve for breathing machine | |
| CN104623798A (en) | Piston gas pressure and flow control valve of breathing machine and working principle of piston gas pressure and flow control valve | |
| CN105169543B (en) | Ventilation control device and the breathing mask equipment with the ventilation control device | |
| CN204766943U (en) | A three -way pipe for having create breathing machine and be connected with atomizer | |
| CN109172978A (en) | Intelligent adjustable one-way exhausting device | |
| CN103948189A (en) | Health mask and manufacture method thereof | |
| CN201939849U (en) | Pressure control valve for breather | |
| CN101983738B (en) | Pressure control valve for breathing machine | |
| CN104815379A (en) | Gas pressure flow control valve of sliding-sheet type respirator, and working principle of gas pressure flow control valve | |
| CN204106786U (en) | A kind of noninvasive ventilator face shield | |
| CN103349808B (en) | Adjustable exhalation valve for non-invasive ventilator | |
| WO2022199128A1 (en) | No-lag oxygen supply ventilator system | |
| CN208785517U (en) | A kind of multi-functional noninvasive ventilator mask | |
| CN102380147B (en) | Medical oxygen pressure respiratory protection device | |
| CN203943991U (en) | A kind of respirator flexible pipe | |
| KR20210102269A (en) | breathing apparatus | |
| CN206214487U (en) | A kind of enclosed phlegm-suction device | |
| CN101474449A (en) | Nose mask for breathing oxygen | |
| CN104056333A (en) | Respiration-assisting mask structure | |
| CN204275216U (en) | A kind of suction/exhale phase pressure than the noninvasive ventilator that can oppositely regulate | |
| CN203989381U (en) | Ventilator mask | |
| CN108969857B (en) | Full-automatic oxygen inhalation and discharge device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150520 |