CN104422568A - Expiratory valve leakage detection method and detection device for respiration circuit - Google Patents
Expiratory valve leakage detection method and detection device for respiration circuit Download PDFInfo
- Publication number
- CN104422568A CN104422568A CN201310395607.XA CN201310395607A CN104422568A CN 104422568 A CN104422568 A CN 104422568A CN 201310395607 A CN201310395607 A CN 201310395607A CN 104422568 A CN104422568 A CN 104422568A
- Authority
- CN
- China
- Prior art keywords
- expiratory valve
- negative pressure
- flow rate
- inspiratory flow
- breathing circuit
- 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 an expiratory valve leakage detection method and an expiratory valve leakage detection device for a respiration circuit. The expiratory valve leakage detection device for the respiration circuit comprises an inspiratory flow rate-adjustable negative pressure device and a first pressure detector, wherein the inspiratory flow rate-adjustable negative pressure device is suitable for being connected with an expiration opening of the respiration circuit and inhaling air from the expiration opening to close an expiratory valve of the respiration circuit; the first pressure detector is arranged in the inspiratory flow rate-adjustable negative pressure device to detect pressure in an air passage defined between the inspiratory flow rate-adjustable negative pressure device and the expiratory valve after the expiratory valve is kept closed for 3 to 6 minutes. The expiratory valve leakage detection method for the respiration circuit disclosed by the embodiment of the invention is simple in structure and low in manufacturing cost, and the first pressure detector is difficult to damage.
Description
Technical field
The present invention relates to medical field, in particular to a kind of expiratory valve leak detecting device for loop of exhaling, also relate to a kind of detection method utilizing the described expiratory valve leak detecting device for loop of exhaling to detect expiratory valve leakage.
Background technology
The existing expiratory valve leakage detection method for breathing circuit comprises two kinds: a kind of method utilizes air bag from pneumostome air-breathing, and this kind of method inspiratory flow rate is wayward, and tensimeter easily damages; Another kind method is the pressurize situation of the rear end air inlet from breathing circuit, observed pressure table, and this method step is many and breathing circuit itself has leakage rate, is difficult to accurately judge whether expiratory valve leaks gas.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, one object of the present invention is to propose a kind of expiratory valve leak detecting device for breathing circuit, and the described expiratory valve leak detecting device structure for breathing circuit is simple, and low cost of manufacture, parts are not fragile.
Another object of the present invention is to propose a kind of utilization and detects for the expiratory valve leak detecting device of breathing circuit the detection method that expiratory valve leaks, the expiratory valve leak detecting device that described utilization is used for breathing circuit detect the detection method step that expiratory valve leaks simple, be easy to realize.
To achieve these goals, embodiment according to a first aspect of the present invention proposes a kind of expiratory valve leak detecting device for breathing circuit.The described expiratory valve leak detecting device for breathing circuit comprises: the negative pressure device of adjustable inspiratory flow rate, and the negative pressure device of described adjustable inspiratory flow rate is suitable for being connected with the exhalation vents of described breathing circuit and from described exhalation vents air-breathing to close the expiratory valve of described breathing circuit; And first pressure detector, described first pressure detector is located in the gas passage that limits between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve and continues the pressure in the negative pressure device of described adjustable inspiratory flow rate after 3 minutes-6 minutes with the shut-in time detecting described expiratory valve.
According to the expiratory valve leak detecting device for breathing circuit of the embodiment of the present invention, from described exhalation vents air-breathing, described expiratory valve is closed with predetermined air-breathing speed by arranging the adjustable negative pressure device of air-breathing speed, and by arrange can detect the described expiratory valve shut-in time continue 3 minutes-6 minutes after the first pressure detector of pressure in the gas passage that limits between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve, detect described expiratory valve whether to leak gas, structure is simple, low cost of manufacture, and described first pressure detector is not fragile.In addition, because negative pressure device can accurately control air-breathing speed, accurately can detect described expiratory valve for the expiratory valve leak detecting device of breathing circuit thus and whether leak gas.
According to one embodiment of present invention, the described expiratory valve leak detecting device for breathing circuit also comprises: connecting line, one end of described connecting line is connected with described exhalation vents, and the other end of described connecting line is connected with the negative pressure device of described adjustable inspiratory flow rate.The structure of the negative pressure device of described exhalation vents and described adjustable inspiratory flow rate can be simplified thus, reduce manufacturing cost.
Alternatively, described connecting line is connected by quick union with described exhalation vents, thus makes the connection of described connecting line and described exhalation vents more convenient with disconnection.
Further, the described expiratory valve leak detecting device for breathing circuit also comprises: the second pressure detector, pressure in the gas passage limited between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve after described second pressure detector is located at and described connecting line continues 3 minutes-6 minutes with the shut-in time detecting described expiratory valve, thus can judge whether described expiratory valve leaks gas further exactly.
According to one embodiment of present invention, the negative pressure device of described adjustable inspiratory flow rate comprises: negative pressure source; Housing, is provided with container cavity in described housing, and described container cavity is communicated with to produce negative pressure in described container cavity with described negative pressure source, and wherein said exhalation vents is communicated with described container cavity; And variable valve, described variable valve is connected to control inspiratory flow rate with described negative pressure source.
Alternatively, described negative pressure source is vacuum pump.
Alternatively, described first pressure detector is rain glass.
Alternatively, described second pressure detector is rain glass.
Embodiment according to a second aspect of the present invention proposes a kind of detection method utilizing the expiratory valve leak detecting device being used for breathing circuit to detect expiratory valve leakage.The detection method that the expiratory valve leak detecting device detection expiratory valve that described utilization is used for breathing circuit leaks comprises the following steps:
S1, utilize the negative pressure device of adjustable inspiratory flow rate from exhalation vents air-breathing to close expiratory valve;
S2, to continue after 3 minutes-6 minutes when the shut-in time of described expiratory valve, the pressure in the gas passage utilizing pressure detector to detect to limit between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve;
S3, judge whether expiratory valve leaks gas according to the detected value of pressure detector.
According to the detection method of the embodiment of the present invention, by the negative pressure device of described adjustable inspiratory flow rate from described exhalation vents air-breathing, described expiratory valve is closed, between described expiratory valve and the negative pressure device of described adjustable inspiratory flow rate, forms airtight gas passage.
Then, detect described expiratory valve by the pressure detector (scheming not shown) be located in enclosed gas channel and close in latter 3 minutes-6 minutes, whether the force value in enclosed gas channel can reach scheduled pressure value.
Finally, judge whether described expiratory valve leaks gas according to benchmark.If gas leakage, described expiratory valve is defective, can not dispatch from the factory.The negative pressure device of described adjustable inspiratory flow rate can regulate the flow velocity from described exhalation vents air-breathing, can avoid like this damaging pressure detector.Specifically, the too fast meeting of inspiratory flow rate causes that pressure detector negative pressure is excessive exceeds sensing range.Therefore, according to the detection method of the embodiment of the present invention, step is simple, be easy to realize, and detection architecture is accurate
According to one embodiment of present invention, after the shut-in time of described expiratory valve continues 5 minutes, pressure in the gas passage utilizing pressure detector to detect to limit between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve, thus can judge whether described expiratory valve leaks gas more accurately.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the expiratory valve leak detecting device for breathing circuit according to the embodiment of the present invention;
Fig. 2 is the process flow diagram detecting the detection method that expiratory valve leaks according to the utilization of the embodiment of the present invention for the expiratory valve leak detecting device of breathing circuit.
Description of reference numerals:
The negative pressure device 120 of expiratory valve leak detecting device 10, connecting line 110, adjustable inspiratory flow rate, breathing circuit 20, exhalation vents 201, expiratory valve 210, inspiratory valve 220
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
Term " first ", " second " are only for describing object in describing the invention, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; It can be mechanical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
Below with reference to Fig. 1 and Fig. 2, the expiratory valve leak detecting device 10 for breathing circuit 20 according to the embodiment of the present invention is described.Breathing circuit 20, for the connection of Medical Devices (such as, anesthesia equipment and breathing apparatus) and patient, to suck for patient and breath provides passage.Breathing circuit 20 comprises expiratory valve 210 and inspiratory valve 220.During air-breathing, gas (such as anaesthetizing mixed gas or the oxygen) inspiratory valve 220 through opening enters in patient body; During expiration, expiratory valve 210 is opened, and inspiratory valve 220 is closed simultaneously, and the gas that patient breathes out is discharged by exhalation vents 201.Whether Medical Devices need to detect the one-way of expiratory valve 210 when examining eventually, namely leak gas to expiratory valve 210 and detect, to ensure the normal operation of Medical Devices.
As shown in Figure 1, negative pressure device 120 and first pressure detector of adjustable inspiratory flow rate is comprised for the expiratory valve leak detecting device 10 of breathing circuit 20.The negative pressure device 120 of adjustable inspiratory flow rate is suitable for being connected with the exhalation vents 201 of breathing circuit 20.The negative pressure device 120 of adjustable inspiratory flow rate from exhalation vents 201 air-breathing to close the expiratory valve 210 of breathing circuit 20.In the negative pressure device 120 that first pressure detector is located at adjustable inspiratory flow rate with detect expiratory valve 210 shut-in time continue 3 minutes-6 minutes after pressure in the gas passage that limits between the negative pressure device 120 of adjustable inspiratory flow rate and expiratory valve 210.
Expiratory valve 210 is closed from exhalation vents 201 air-breathing with predetermined air-breathing speed by the negative pressure device 120 arranging the adjustable adjustable inspiratory flow rate of air-breathing speed by the expiratory valve leak detecting device 10 for breathing circuit 20 according to the embodiment of the present invention, and by arrange can detect expiratory valve 210 shut-in time continue 3 minutes-6 minutes after the first pressure detector of pressure in the gas passage that limits between the negative pressure device 120 of adjustable inspiratory flow rate and expiratory valve 210, detect expiratory valve 210 whether to leak gas, structure is simple, low cost of manufacture, and the first pressure detector is not fragile.In addition, because the negative pressure device 120 of adjustable inspiratory flow rate can accurately control air-breathing speed, thus accurately can detect expiratory valve 210 for the expiratory valve leak detecting device 10 of breathing circuit 20 and whether leak gas.
Describe referring to Fig. 2 the expiratory valve leak detecting device 10 being used for breathing circuit 20 according to the utilization of the embodiment of the present invention and detect the detection method that expiratory valve leaks.
As shown in Figure 2, comprise the following steps according to the detection method of the embodiment of the present invention:
S1, utilize the negative pressure device 120 of adjustable inspiratory flow rate from exhalation vents 201 air-breathing to close expiratory valve 210;
S2, to continue after 3 minutes-6 minutes when the shut-in time of expiratory valve 210, the pressure in the gas passage utilizing pressure detector to detect to limit between the negative pressure device 120 of adjustable inspiratory flow rate and expiratory valve 210;
S3, judge whether expiratory valve 210 leaks gas according to the detected value of pressure detector.
According to the detection method of the embodiment of the present invention, by the negative pressure device 120 of adjustable inspiratory flow rate from exhalation vents 201 air-breathing, expiratory valve 210 is closed, between expiratory valve 210 and the negative pressure device 120 of adjustable inspiratory flow rate, forms enclosed gas channel.It is to be appreciated that here airtight makes broad understanding, when expiratory valve 210 air leakage is less, also think that this gas passage is airtight gas passage.
Then, detect expiratory valve 210 by the pressure detector (scheming not shown) be located in enclosed gas channel and close in latter 3 minutes-6 minutes, whether the force value in enclosed gas channel can reach scheduled pressure value.
Finally, judge whether expiratory valve 210 leaks gas according to benchmark.If gas leakage, this expiratory valve 210 is defective, can not dispatch from the factory.The negative pressure device 120 of adjustable inspiratory flow rate can regulate the flow velocity from exhalation vents 201 air-breathing, can avoid like this damaging pressure detector.Specifically, the too fast meeting of inspiratory flow rate causes that pressure detector negative pressure is excessive exceeds sensing range.Therefore, according to the detection method of the embodiment of the present invention, step is simple, be easy to realize, and detection architecture is accurate.
Be understandable that, benchmark be through inspiratory flow rate that lot of experiments draws, the data of relation between force value in time that expiratory valve 210 is closed and enclosed gas channel.
Preferably, after the shut-in time of expiratory valve 210 continues 5 minutes, utilize the pressure in pressure detector detection gas passage.Prove through lot of experiments, after continuing 5 minutes according to the shut-in time of expiratory valve 210, pressure detector (such as, first pressure detector) force value in the gas passage that limits between the negative pressure device 120 of adjustable inspiratory flow rate that detects and expiratory valve 210 judges whether expiratory valve 210 leaks gas, and judged result is more accurate.That is, shut-in time of expiratory valve 210 continue 5 minutes after the force value that detects and bench-marking, can judge whether expiratory valve 210 leaks gas more accurately.
Such as, in one embodiment of the invention, benchmark can be, with the inspiratory flow rate of 60 ml/min from air entry air-breathing, shut-in time of the expiratory valve 210 that pressure detector detects continue 5 minutes after force value in gas passage whether can reach 0.5 kPa.
Alternatively, the first pressure detector can be rain glass.
In one embodiment of the invention, the expiratory valve leak detecting device 10 for breathing circuit 20 can also comprise connecting line 110.One end of connecting line 110 can be connected with exhalation vents 201, and the other end of connecting line 110 can be connected with the negative pressure device 120 of adjustable inspiratory flow rate.That is, connecting line 110 can be connected between the negative pressure device 120 of exhalation vents 201 and adjustable inspiratory flow rate, thus can simplify the structure of the negative pressure device 120 of exhalation vents 201 and adjustable inspiratory flow rate, reduces manufacturing cost.
Advantageously, connecting line 110 can be connected by quick union with exhalation vents 201, thus makes connecting line 110 more convenient with disconnection with the connection of exhalation vents 201.
Further, the expiratory valve leak detecting device 10 for breathing circuit 20 can also comprise the second pressure detector.Second pressure detector can be located on connecting line 110 with detect expiratory valve 210 shut-in time continue 3 minutes-6 minutes after pressure in the gas passage that limits between the negative pressure device 120 of adjustable inspiratory flow rate and expiratory valve 210.That is, in gas passage, the first pressure detector and the second pressure detector can be set simultaneously.The mean value that force value that the first pressure detector detects and the second pressure detector detect force value can be obtained by calculating.By by described mean value and bench-marking, can judge whether expiratory valve 210 leaks gas further exactly.
Alternatively, described second pressure detector can be rain glass.
In one embodiment of the invention, the negative pressure device 120 of adjustable inspiratory flow rate comprises: negative pressure source, housing and variable valve.Can be provided with container cavity in housing, container cavity is communicated with to produce negative pressure in container cavity with negative pressure source, and wherein exhalation vents 201 can be communicated with container cavity.Variable valve can be connected to control inspiratory flow rate with negative pressure source.The negative pressure device 120 for the adjustable inspiratory flow rate in the expiratory valve leak detecting device 10 of breathing circuit 20 according to the embodiment of the present invention is not limited to this, can also be that other can realize regulating the negative pressure device of inspiratory flow rate.
Alternatively, negative pressure source can be vacuum pump.
Breathing circuit 20 in embodiments of the present invention, the structure of expiratory valve 210 are known for those of ordinary skills, no longer describe in detail at this.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (10)
1., for an expiratory valve leak detecting device for breathing circuit, it is characterized in that, comprising:
The negative pressure device of adjustable inspiratory flow rate, the negative pressure device of described adjustable inspiratory flow rate is suitable for being connected with the exhalation vents of described breathing circuit and from described exhalation vents air-breathing to close the expiratory valve of described breathing circuit; And
First pressure detector, the pressure in the gas passage limited between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve after continuing 3 minutes-6 minutes with the shut-in time detecting described expiratory valve in the negative pressure device that described first pressure detector is located at described adjustable inspiratory flow rate.
2. the expiratory valve leak detecting device for breathing circuit according to claim 1, is characterized in that, also comprise:
Connecting line, one end of described connecting line is connected with described exhalation vents, and the other end of described connecting line is connected with the negative pressure device of described adjustable inspiratory flow rate.
3. the expiratory valve leak detecting device for breathing circuit according to claim 2, it is characterized in that, described connecting line is connected by quick union with described exhalation vents.
4. the expiratory valve leak detecting device for breathing circuit according to claim 2, it is characterized in that, also comprise: the second pressure detector, the pressure in the gas passage limited between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve after described second pressure detector is located at and described connecting line continues 3 minutes-6 minutes with the shut-in time detecting described expiratory valve.
5. the expiratory valve leak detecting device for breathing circuit according to claim 1, is characterized in that, the negative pressure device of described adjustable inspiratory flow rate comprises:
Negative pressure source;
Housing, is provided with container cavity in described housing, and described container cavity is communicated with to produce negative pressure in described container cavity with described negative pressure source, and wherein said exhalation vents is communicated with described container cavity; And
Variable valve, described variable valve is connected to control inspiratory flow rate with described negative pressure source.
6. the expiratory valve leak detecting device for breathing circuit according to claim 5, is characterized in that,
Described negative pressure source is vacuum pump.
7. the expiratory valve leak detecting device for breathing circuit according to any one of claim 1-6, is characterized in that, described first pressure detector is rain glass.
8. the expiratory valve leak detecting device for breathing circuit according to claim 4, is characterized in that, described second pressure detector is rain glass.
9. utilize the expiratory valve leak detecting device for breathing circuit according to any one of claim 1-8 to detect a detection method for expiratory valve leakage, it is characterized in that, comprise the following steps:
S1, utilize the negative pressure device of adjustable inspiratory flow rate from exhalation vents air-breathing to close expiratory valve;
S2, to continue after 3 minutes-6 minutes when the shut-in time of described expiratory valve, the pressure in the gas passage utilizing pressure detector to detect to limit between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve;
S3, judge whether expiratory valve leaks gas according to the detected value of pressure detector.
10. the detection method that the expiratory valve leak detecting device detection expiratory valve that utilization according to claim 9 is used for breathing circuit leaks, it is characterized in that, continue after 5 minutes when the shut-in time of described expiratory valve, the pressure in the gas passage utilizing pressure detector to detect to limit between the negative pressure device of described adjustable inspiratory flow rate and described expiratory valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395607.XA CN104422568A (en) | 2013-09-03 | 2013-09-03 | Expiratory valve leakage detection method and detection device for respiration circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310395607.XA CN104422568A (en) | 2013-09-03 | 2013-09-03 | Expiratory valve leakage detection method and detection device for respiration circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104422568A true CN104422568A (en) | 2015-03-18 |
Family
ID=52972202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310395607.XA Pending CN104422568A (en) | 2013-09-03 | 2013-09-03 | Expiratory valve leakage detection method and detection device for respiration circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104422568A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3106835A (en) * | 1959-02-10 | 1963-10-15 | Gomco Surgical Mfg Corp | Check valve tester |
| CN2331968Y (en) * | 1998-05-21 | 1999-08-04 | 潘志刚 | Instrument for testing packing tightness |
| CN1687731A (en) * | 2005-04-30 | 2005-10-26 | 武汉理工大学 | Equipment for testing valve performance of oil fuel pump |
| CN2844876Y (en) * | 2005-07-30 | 2006-12-06 | 万向钱潮股份有限公司 | Vacuum airtight inspection instrument |
| CN202204649U (en) * | 2011-07-28 | 2012-04-25 | 大连巨通塑料制品有限公司 | Sealing tester for bag body |
| CN102507109A (en) * | 2011-11-02 | 2012-06-20 | 天津鹏翎胶管股份有限公司 | One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method |
-
2013
- 2013-09-03 CN CN201310395607.XA patent/CN104422568A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3106835A (en) * | 1959-02-10 | 1963-10-15 | Gomco Surgical Mfg Corp | Check valve tester |
| CN2331968Y (en) * | 1998-05-21 | 1999-08-04 | 潘志刚 | Instrument for testing packing tightness |
| CN1687731A (en) * | 2005-04-30 | 2005-10-26 | 武汉理工大学 | Equipment for testing valve performance of oil fuel pump |
| CN2844876Y (en) * | 2005-07-30 | 2006-12-06 | 万向钱潮股份有限公司 | Vacuum airtight inspection instrument |
| CN202204649U (en) * | 2011-07-28 | 2012-04-25 | 大连巨通塑料制品有限公司 | Sealing tester for bag body |
| CN102507109A (en) * | 2011-11-02 | 2012-06-20 | 天津鹏翎胶管股份有限公司 | One-way valve rubber tube positive pressure opening and negative pressure leakage detection device and operation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2580188C2 (en) | System and method for breath control | |
| CN100998902B (en) | Method and device for mornitering and controlling flow | |
| US8066003B2 (en) | Method for improving control and detection precision of tidal volume by a calculation introduced with R value | |
| US20110114093A1 (en) | Automatic fitment detection and flow calibration using non-contact sensing in powered air purifying respirators | |
| CN101468219B (en) | Gas path system and operation method thereof as well as breathing apparatus and anesthesia apparatus using the system | |
| CN201239408Y (en) | Endotracheal tube with pressure-displaying air bag | |
| CN103800012B (en) | A kind of method for sample gas flow in stable Respiratory Care and device | |
| CN106492321B (en) | A kind of ventilator | |
| US8973575B2 (en) | Anaesthesia machine arrangement and a method in connection with an anaesthesia machine arrangement | |
| CN206837209U (en) | A kind of lung ventilator | |
| CN104841055A (en) | Control method, device and system for breathing machine PEEP valve | |
| CN102012243A (en) | Method for detecting gas leakage quantity of medical instrument with respiration loop | |
| CN103412523B (en) | A kind of breathing anesthesia gas circuit supervisory system and control method | |
| CN103706013A (en) | Automatic pressure stabilizing device for tracheal intubation airbag of hyperbaric oxygen chamber | |
| CN104784792B (en) | Breathing machine and moisture removing air path system thereof | |
| CN201637556U (en) | Air tightness checking device for anesthesia breathing circuit tubes | |
| CN104422568A (en) | Expiratory valve leakage detection method and detection device for respiration circuit | |
| WO2014101550A1 (en) | Starting up self-testing method of airway pressure sensor for anesthesia machine | |
| CN103893888B (en) | Pulse width modulation type anesthesia machine or breathing machine | |
| CN101318048B (en) | Automatic correction method for reverse connection of flow transducer of anesthesia apparatus and anesthesia apparatus thereof | |
| CN202083532U (en) | Device for testing air tightness of telescopic bellows loop | |
| US10279133B2 (en) | Process for checking the function of a respiration system | |
| CN103893874A (en) | Anesthesia machine and method for allowing anesthesia machine to operate normally when airway pressure sensor of anesthesia machine fails | |
| CN104274291A (en) | Emergency hood porous oxygen inhalation and exhaust device for hyperbaric oxygen chamber | |
| CN104069575A (en) | Small tidal volume ventilation control method of anesthesia machine or respirator |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150318 |