CN101468236B - Certificated valve - Google Patents
Certificated valve Download PDFInfo
- Publication number
- CN101468236B CN101468236B CN2007103023522A CN200710302352A CN101468236B CN 101468236 B CN101468236 B CN 101468236B CN 2007103023522 A CN2007103023522 A CN 2007103023522A CN 200710302352 A CN200710302352 A CN 200710302352A CN 101468236 B CN101468236 B CN 101468236B
- Authority
- CN
- China
- Prior art keywords
- certificated
- channel
- valve
- directional control
- solenoid directional
- 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.)
- Expired - Fee Related
Links
Images
Abstract
A checking valve comprises a checking valve block. The inner part of valve bock is installed with an air sucking channel and an air exhaling channel which are connected with the patient, an air outlet channel and an air inlet channel which are connected with a pressure sensor. An atmosphere channel is installed in the checking valve block and one end of atmosphere channel is connected with atmosphere. The checking valve also comprises a first electromagnetic reversing valve and a second electromagnetic reversing valve which are detachably installed on the checking valve block, wherein the first electromagnetic reversing valve has a first state for communicating the air sucking channel and the air inlet channel; and a second channel for communicating the atmosphere channel and the air inlet channel. The second electromagnetic reversing valve has a first state for communicating the air exhaling channel and the air outlet channel; and a second state for communicating the atmosphere channel and the air outlet channel. The checking valve of the invention can timely checks the outer atmosphere pressure thereby correcting a relative pressure zero point of pressure sensor, eliminating zero wander and increasing the detecting precision of pressure sensor.
Description
Technical field
The present invention relates to a kind of medical apparatus, particularly relate to a kind of certificated valve.
Background technology
At medical field; The patient is often because a variety of causes can't autonomous respiration; This is just need help the patient to accomplish respiratory function by auxiliary device, accepts in the process of assisted respiartion at this, and the pressure of patient pulmonary should be identical with the situation of eupnea; Be that pulmonary's pressure should keep balance with ambient atmosphere pressure, this has just proposed very high requirement to the accuracy of assisted respirator.In the present device, generally adopt pressure transducer that the pressure of patient pulmonary is carried out tracking observation, the pressure of patient pulmonary and the atmospheric pressure of presetting are compared, to obtain Real Time Observation patient's breathing situation.
But; The assisted respirator that adopts at present all is that pressure and the predefined atmospheric pressure value with patient pulmonary compares; And in fact; Corresponding change can take place owing to the variation of ambient temperature and humidity etc. in atmospheric pressure, makes predefined pressure produce deviation zero point, and the relative pressure values that obtains like this (ratio of patient pulmonary pressure and preset atmospheric pressure) just can't keep higher accuracy always; In addition, pick off because the influence of self performance also can make pressure produce drift zero point, and this just need proofread and correct the relative pressure zero point (being atmospheric pressure) of pick off, has guaranteed that pick off works under higher precision after work a period of time.
Therefore, a kind of certificated valve need be provided, it can regularly carry out verification to pressure transducer, corrects drift, and the reference value of relative pressure is consistent with ambient atmosphere pressure always.
Summary of the invention
Technical problem to be solved by this invention is to correct pressure transducer owing to external environment changes the zero drift phenomenon that produces, and eliminates the deviation of preset pressure of pressure transducer and ambient atmosphere pressure, thereby improves the operating accuracy of pressure transducer.
To above-mentioned technical problem, the present invention provides a kind of certificated valve, comprises the certificated valve piece, and valve piece inside is provided with the air intake passage and exhalation passages and outlet passageway that links to each other with pressure transducer and inlet channel that links to each other with the patient; The certificated valve piece is provided with plasmas channel in inside, an end and the atmosphere of this plasmas channel; Certificated valve also comprises first solenoid directional control valve and second solenoid directional control valve that is arranged on removably on the certificated valve piece; Wherein, first solenoid directional control valve has first state, conducting air intake passage and inlet channel; And second state; Plasmas channel is communicated with inlet channel, and second solenoid directional control valve has first state, conducting exhalation passages and inlet channel; And second state, plasmas channel is communicated with outlet passageway.
Optimal way is in above-mentioned certificated valve, to offer on the surface of said certificated valve piece: first passage and second passage all communicate with said plasmas channel; The 3rd passage communicates with said air intake passage; The four-way pore communicates with said exhalation passages; The five-way pore communicates with said inlet channel; And the clematis stem pore, communicate with said outlet passageway; Wherein, said first, the 3rd and the five-way pore also be connected to said first solenoid directional control valve respectively, said second, the 4th and the clematis stem pore be connected to said second solenoid directional control valve respectively; Said first solenoid directional control valve is in said first state when outage; Said the 3rd passage of conducting and said five-way pore are in said second state, said five-way pore of conducting and said first passage when energising; Said second solenoid directional control valve is in said first state when outage; Said four-way pore of conducting and clematis stem pore are in said second state, said second passage of conducting and said second passage when energising.
Optimal way does; In above-mentioned certificated valve; Two groups of pipe joints are installed on said certificated valve piece; First group of pipe joint is connected to said patient and said air intake passage, said exhalation passages, and second group of pipe joint is connected to said pressure transducer and said outlet passageway, said admission line.
In addition, said certificated valve piece also comprises a plurality of first installing holes, is used for said solenoid directional control valve is installed to said certificated valve piece.And said certificated valve piece also comprises a plurality of second installing holes, is used for said certificated valve piece is fixed to external equipment.
In addition, said first group of pipe joint can be arranged on the side, top of said certificated valve piece; Said second group of pipe joint can be arranged on the side, below of said certificated valve piece; Said first all is arranged on the side, the place ahead of said certificated valve piece to the clematis stem pore.
In sum, the present invention has following technique effect:
First; Because there is null offset in pressure transducer, and ambient atmosphere pressure constantly changes with environment, and certificated valve piece according to the present invention communicates with ambient atmosphere; Regularly detect the variation of ambient atmosphere pressure; Again confirm relative accurately pressure zero point (being atmospheric pressure) thereby correction null offset, obtain accurate pressure ratio relatively, exactly patient's situation is made judgement.
Second; To confirm relative pressure zero point again; With regard to needs to external world atmospheric pressure detect, certificated valve piece according to the present invention has the airway that directly communicates with ambient atmosphere, comprises solenoid directional control valve simultaneously; Solenoid directional control valve can be controlled being communicated with of certificated valve piece and ambient atmosphere, so just can be in needs easily to external world atmospheric pressure detect.
The 3rd, certificated valve piece according to the present invention also has a plurality of airways and passage, its under the control of solenoid directional control valve; Can keep being communicated with or keeping being communicated with of pick off and ambient atmosphere of pick off and patient; Make pressure transducer can collect the data of patient pulmonary pressure, and also can in needs, gather the data of ambient atmosphere pressure, revise precision; Thereby obtain accurate pressure ratio relatively, confirm the current situation of patient accurately.
Should be appreciated that above generality is described and following detailed description is all enumerated and illustrative, purpose is in order to the present invention who requires to protect further explanation to be provided.
Description of drawings
Accompanying drawing constitutes the part of this description, is used to help further understand this explanation.These accompanying drawing diagrams some embodiments of this explanation, and be used for explaining the principle of this explanation with description.Identical in the accompanying drawings parts are represented with identical label.Wherein:
Fig. 1 is that certificated valve according to embodiment of the present invention is at the axonometric chart that is equipped with under the solenoid directional control valve state;
Fig. 2 is that certificated valve according to embodiment of the present invention is at the axonometric chart of pulling down under the solenoid directional control valve state;
Fig. 3 is that certificated valve according to embodiment of the present invention is at the front view that is equipped with under the solenoid directional control valve state; And
Fig. 4 is that certificated valve according to embodiment of the present invention is at the perspective view of pulling down under the solenoid directional control valve state.
The specific embodiment
Below in conjunction with accompanying drawing preferred implementation of the present invention is described.
At first, each component part and the function thereof to the certificated valve of the preferred embodiment for the present invention describes.
Fig. 1 is that certificated valve according to embodiment of the present invention is at the axonometric chart that is equipped with under the solenoid directional control valve state; Fig. 2 be certificated valve according to embodiment of the present invention at the axonometric chart of pulling down under the solenoid directional control valve state, Fig. 3 is that certificated valve according to embodiment of the present invention is at the front view that is equipped with under the solenoid directional control valve state.Visible by Fig. 1 to Fig. 3; Certificated valve according to the present invention comprises: certificated valve piece 1, and it is connected in patient and pressure transducer (not shown), and has the atmosphere airway 3e with atmosphere; This atmosphere airway 3e forms in the inside of certificated valve piece 1, the direct and atmosphere of an end; Two solenoid directional control valve 2a and 2b are arranged on the certificated valve piece 1 removably; And four pipe joint 7a, 7b, 7c, 7d, wherein pipe joint 7a, 7b are connected in the upper side of certificated valve piece 1, and road joint 7c, 7d are connected in downside.
Particularly, two solenoid directional control valve 2a, 2b shown in Fig. 1, Fig. 3 are respectively applied for inflow and the outflow of control gas from patient pulmonary to pressure transducer.Preferably; Two solenoid directional control valve 2a, 2b all are arranged on the surface, the same side of certificated valve piece 1; And in fact, if corresponding two groups of passages (totally six, every group each three; Be described below) be opened in respectively certificated valve piece 1 over against two surfaces on, then two solenoid directional control valve 2a, 2b also can correspondingly be arranged on certificated valve piece 1 over against two surfaces on.
Further; Four pipe joint 7a shown in Fig. 1 and Fig. 2,7b, 7c, 7d; Wherein two pipe joint 7a, 7b are positioned at the upper surface of certificated valve piece 1, and the end of each pipe joint 7a, 7b all links to each other with the patient, the other end respectively with certificated valve piece 1 in corresponding first, second airway 3a, 3c (referring to after state shown in Figure 4) link to each other; Pipe joint 7a is as air-breathing interface, and pipe joint 7b is as the expiration interface; Other two pipe joint 7c, 7d are positioned at the lower surface of certificated valve piece 1; The end of each pipe joint 7c, 7d all links to each other with pressure transducer; The other end respectively with certificated valve piece 1 in corresponding the 3rd, four- way air flue 3d, 3b (referring to after state shown in Figure 4) link to each other; Pipe joint 7c is as the interface of giving vent to anger, and pipe joint 7d is as intake interface.The set-up mode that should be noted that pipe joint 7a, 7b, 7c, 7d is that the airway aperture position according to correspondence changes.
Below, the internal structure according to the certificated valve piece 1 in the preferred embodiment for the present invention is described.
Fig. 4 is that certificated valve according to embodiment of the present invention is at the perspective view of pulling down under the solenoid directional control valve state.As shown in Figure 4, certificated valve piece 1 comprises six airways according to the preferred embodiment of the present invention, is specially: the first airway 3a and the second airway 3c; An end separately all links to each other with the patient; The first airway 3a is an air intake passage, links to each other with above-mentioned pipe joint 7a as air-breathing interface, and the second airway 3c is an exhalation passages; Link to each other with above-mentioned pipe joint 7b as the expiration interface, first, second airway 3a, 3c just have been connected to the patient through pipe joint 7a, 7b respectively like this; The 3rd airway 3d and four-way air flue 3b; An end separately all links to each other with the pressure transducer (not shown); The 3rd airway 3d is an outlet passageway, links to each other with the give vent to anger pipe joint 7c of interface of above-mentioned conduct, and four-way air flue 3b is an inlet channel; Link to each other with above-mentioned pipe joint 7d as intake interface, such the 3rd, four- way air flue 3d, 3b just have been connected to pressure transducer through pipe joint 7c, 7d respectively; And five-way air flue 3e, be plasmas channel, the direct and atmosphere of one of which end.In preferred implementation as shown in Figure 4, the opening of five-way air flue 3e is opened on the side on the left side of certificated valve piece 1, and in fact, its opening can be opened on any side of certificated valve piece 1.
Continuation is with reference to Fig. 3 and Fig. 4; In the present invention; Form two groups of totally six passage 4a, 4b, 4c, 4d, 4e, 4f on the main apparent surface of certificated valve piece 1; Three passages in every group can be arranged on the vertical straight line, and wherein one group comprises three passage 4a, 4c and 4e, lay respectively at certificated valve piece 1 lip-deep opening and communicate with above-mentioned solenoid directional control valve 2a; Another group comprises three passage 4b, 4d and 4f, lays respectively at certificated valve piece 1 lip-deep opening communicate with above-mentioned solenoid directional control valve 2b (having on the solenoid directional control valve and these six corresponding holes of passage, not shown).Particularly, the first passage 4a and the second passage 4b are positioned on the horizontal line, and an end separately links to each other with five-way air flue 3e in the inside of certificated valve piece 1, thereby is communicated with ambient atmosphere; The 3rd passage 4c and four-way pore 4d are positioned on the horizontal line; An end separately links to each other with the other end of the first airway 3a and the said second airway 3c respectively in the inside of certificated valve piece 1 (this other end promptly be the first airway 3a, the second airway 3c link to each other with aforementioned tube pipeline joint 7a, 7b the end opposite of an end), thereby communicates with the patient; Five-way pore 4e and clematis stem pore 4f are positioned on the horizontal line; An end separately links to each other with the other end of the 3rd airway 3d and four-way air flue 3b respectively in the inside of certificated valve piece 1 (this other end promptly be the 3rd airway 3d, four-way air flue 3b link to each other with aforementioned tube pipeline joint 7c, 7d the end opposite of an end), thereby communicates with the pressure transducer (not shown).
Further, as shown in Figure 4, certificated valve piece 1 also comprises: two couples of totally four first screwed hole 5a, 5b, 5c, 5d, and wherein first couple first screwed hole 5a, 5b are positioned on the horizontal line, and it is used for solenoid directional control valve 2a is fixed to certificated valve piece 1; Another is positioned on the horizontal line the first screwed hole 5c, 5d, is used for solenoid directional control valve 2b is fixed to certificated valve piece 1.These two solenoid directional control valve 2a, 2b are used to control the situation that is communicated with of pressure transducer and patient and ambient atmosphere, and it is connected on the external power source.
Preferably; Two groups of passage 4a, 4b, 4c, 4d, 4e, 4f and two couples first screwed hole 5a, 5b, 5c, 5d are formed on the same surface, but in fact, two groups of passage 4a, 4b, 4c, 4d, 4e, 4f can be respectively formed at certificated valve piece 1 over against two surfaces on; Correspondingly; Two couples first screwed hole 5a, 5b, 5c, 5d also be respectively formed at certificated valve piece 1 over against two surfaces on, just each over against the surface on be formed with one group of passage and a pair of first screwed hole, like this; Correspondingly, two solenoid directional control valve 2a, 2b also just be respectively fixed to certificated valve piece 1 over against two surfaces on (as stated).This explains that also under the situation that can realize certificated valve function of the present invention, above-mentioned passage and solenoid directional control valve can adopt any suitable mode to be provided with.
In addition, certificated valve piece 1 according to the present invention shown in Figure 4 also comprises two installing hole 6a, 6b, can certificated valve piece 1 be fixed on the external device (ED) through these two installing hole 6a, 6b.
Then, the concrete work process of certificated valve according to the preferred embodiment of the present invention is elaborated.
As shown in Figure 1, in preferred implementation of the present invention, after being fixed to two solenoid directional control valve 2a, 2b and four pipe joint 7a, 7b, 7c, 7d on the certificated valve piece 1, promptly accomplished the installation of certificated valve of the present invention.When two solenoid directional control valve 2a, 2b outage, under the control of solenoid directional control valve 2a, the 3rd passage 4c and five-way pore 4e are communicated with, thereby make win breather line 3a and four-way feed channel 3b connection; Simultaneously, under the control of solenoid directional control valve 2b, four-way pore 4d and clematis stem pore 4f are communicated with, thereby make the second breather line 3c and the 3rd breather line 3d be communicated with.At this moment; Because the first breather line 3a and the second breather line 3c are connected in the patient through pipe joint 7a, 7b respectively; And the 3rd breather line 3d and four-way feed channel 3b are connected in pressure transducer through pipe joint 7c, 7d respectively, thereby make and formed the circulation of air flow passage between patient and the pressure transducer.The gas that is transported by the assisted respirator (not shown) gets into this circulation of air flow passage through pressure transducer, and then is input to patient's pulmonary through the first breather line 3a (air intake passage) and four-way feed channel 3b (inlet channel); Meanwhile, the second breather line 3c (exhalation passages) and the 3rd breather line 3d (outlet passageway) through this circulation of air flow passage flows out by the gas of patient's exhalation, and then gets back to assisted respirator through pressure transducer.Said process is exactly the process that the patient breathes under the help of assisted respirator; Pressure transducer is through sampling from the air-flow pressure to patient pulmonary in this process; The sampled value that obtains and the preset atmospheric pressure value in the pressure transducer (relative pressure zero point) are compared; If the pressure ratio that obtains is in certain safety range, the patient then is described in order.
This work process just requires the measured pressure ratio of pressure transducer to have enough precision; And in fact external environment can exert an influence for atmospheric pressure; Make atmospheric pressure former thereby change along with ambient temperature and humidity etc.; The pressure of initial setting will produce deviation with respect to atmospheric pressure zero point in pick off like this, and pressure transducer reason owing to himself inherent character after work a period of time can produce null offset, and this also can make preset relative pressure change zero point; This just requires preset relative pressure is calibrated zero point, thereby guarantees the precision of relative pressure ratio.Just can regularly relative pressure be proofreaied and correct zero point by control device according to the solenoid directional control valve 2a in the certificated valve of the present invention, 2b, and eliminate null offset.
When needs carry out timing to relative pressure zero point, just to solenoid directional control valve 2a, 2b energising, under the control of solenoid directional control valve 2a, the first passage 4a and five-way pore 4e connection, thus make four-way feed channel 3b and five-way feed channel 3e be communicated with; Simultaneously, under the control of solenoid directional control valve 2b, the second passage 4b and clematis stem pore 4f are communicated with, thereby make the 3rd breather line 3d also be communicated with five-way feed channel 3e.At this moment; Because five-way feed channel 3e directly links to each other with ambient atmosphere; And the 3rd breather line 3d and four-way feed channel 3b are connected in pressure transducer through pipe joint 7c, 7d respectively, thereby make and formed the circulation of air flow passage between pressure transducer and the ambient atmosphere.The gas that comes from the outside gets into this circulation of air flow passage through five-way feed channel 3e; And then be input to pressure transducer through four-way feed channel 3b (inlet channel); Gas flows into the 3rd breather line 3d (outlet passageway) of this circulation of air flow passage from pressure transducer subsequently, and then passes through five-way feed channel 3e outflow.In this flow process, pressure transducer is just sampled to this extraneous gas, detects its pressure, thereby obtains current accurate pressure values, and then preset relative pressure is proofreaied and correct zero point, and eliminates the null offset of pressure transducer.Like this, just accomplished the correction at zero point of relative pressure, and eliminated the null offset of pressure transducer, thereby improved the degree of accuracy of the relative pressure ratio that obtains according to certificated valve of the present invention.
More than be merely preferred implementation of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a certificated valve comprises certificated valve piece (1), and said certificated valve piece (1) inside is provided with the air intake passage (3a) and exhalation passages (3c) and outlet passageway (3d) that links to each other with pressure transducer and inlet channel (3b) that links to each other with the patient, it is characterized in that,
Said certificated valve piece (1) is provided with plasmas channel (3e) in inside, an end and the atmosphere of this plasmas channel (3e);
Said certificated valve also comprises first solenoid directional control valve (2a) and second solenoid directional control valve (2b) that is arranged on removably on the said certificated valve piece (1), wherein,
Said first solenoid directional control valve (2a, 2b) has first state, and said air intake passage of conducting (3a) and said inlet channel (3b), and second state make said plasmas channel (3e) be communicated with said inlet channel (3b),
Said second solenoid directional control valve (2b) has first state, said exhalation passages of conducting (3c) and outlet passageway (3d); And second state, the said outlet passageway of said plasmas channel (3e) (3d) is communicated with.
2. certificated valve according to claim 1 is characterized in that, offers on the surface of said certificated valve piece (1):
First passage (4a) and second passage (4b) all communicate with said plasmas channel (3e);
The 3rd passage (4c), (3a) communicates with said air intake passage;
Four-way pore (4d), (3c) communicates with said exhalation passages;
Five-way pore (4e), (3b) communicates with said inlet channel; And
Clematis stem pore (4f), (3d) communicates with said outlet passageway;
Wherein, said first, the 3rd and five-way pore (4a, 4c, 4e) also be connected to said first solenoid directional control valve (2a, 2b) respectively, said second, the 4th and clematis stem pore (4b, 4d, 4f) be connected to said second solenoid directional control valve (2b) respectively;
Said first solenoid directional control valve (2a) is in said first state when outage, said the 3rd passage of conducting (4c) and said five-way pore (4e) are in said second state when energising, said five-way pore of conducting (4e) and said first passage (4a),
Said second solenoid directional control valve (2b) is in said first state when outage, said four-way pore of conducting (4d) and clematis stem pore (4f) are in said second state, said clematis stem pore of conducting (4f) and said second passage (4b) when energising.
3. certificated valve according to claim 2; It is characterized in that; Two groups of pipe joints (7a, 7b, 7c, 7d) are installed on said certificated valve piece (1); First group of pipe joint (7a, 7b) is connected to said patient and said air intake passage (3a), said exhalation passages (3c), and second group of pipe joint (7c, 7d) is connected to said pressure transducer and said outlet passageway (3d), said inlet channel (3b).
4. certificated valve according to claim 2 is characterized in that, said certificated valve piece (1) also comprises a plurality of first installing holes (5a-5d), is used for said first solenoid directional control valve (2a) and second solenoid directional control valve (2b) are installed to said certificated valve piece (1).
5. certificated valve according to claim 2 is characterized in that, said certificated valve piece (1) comprises that also (6a 6b), is used for said certificated valve piece (1) is fixed to external equipment a plurality of second installing holes.
6. certificated valve according to claim 3 is characterized in that,
(7a 7b) is arranged on the side, top of said certificated valve piece (1) in said first group of pipe joint;
(7c 7d) is arranged on the side, below of said certificated valve piece (1) in said second group of pipe joint;
Said first all is arranged on the side, the place ahead of said certificated valve piece (1) to clematis stem pore (4a-4f).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103023522A CN101468236B (en) | 2007-12-25 | 2007-12-25 | Certificated valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103023522A CN101468236B (en) | 2007-12-25 | 2007-12-25 | Certificated valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101468236A CN101468236A (en) | 2009-07-01 |
| CN101468236B true CN101468236B (en) | 2012-03-28 |
Family
ID=40826195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007103023522A Expired - Fee Related CN101468236B (en) | 2007-12-25 | 2007-12-25 | Certificated valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101468236B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3267935A (en) * | 1961-05-04 | 1966-08-23 | Air Shield Inc | Respiratory assister |
| CN2352211Y (en) * | 1997-12-22 | 1999-12-08 | 李志平 | Instrument for measuring rehabilitation and therapy of respiratory muscles |
| CN2543036Y (en) * | 2002-05-08 | 2003-04-02 | 金万善 | Digital respirator detector |
| CN1799501A (en) * | 2005-01-05 | 2006-07-12 | 深圳迈瑞生物医疗电子股份有限公司 | Method and apparatus for monitoring human breathing mechanics parameters based on differential pressure flow sensor |
| DE102006028134A1 (en) * | 2006-06-16 | 2007-12-20 | Wawkuschewski, Alexander | Dynamic control and measurement recording method for use with erythrocyte sedimentation rate measurement method, involves measuring gas flow rates between entrance and exit by calibrated capillary tubes with digital differential manometer |
| CN100361716C (en) * | 2000-06-13 | 2008-01-16 | 斯科特实验室公司 | Apparatus and method for mask-free delivery of inspired gas mixture and gas sampling |
-
2007
- 2007-12-25 CN CN2007103023522A patent/CN101468236B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3267935A (en) * | 1961-05-04 | 1966-08-23 | Air Shield Inc | Respiratory assister |
| CN2352211Y (en) * | 1997-12-22 | 1999-12-08 | 李志平 | Instrument for measuring rehabilitation and therapy of respiratory muscles |
| CN100361716C (en) * | 2000-06-13 | 2008-01-16 | 斯科特实验室公司 | Apparatus and method for mask-free delivery of inspired gas mixture and gas sampling |
| CN2543036Y (en) * | 2002-05-08 | 2003-04-02 | 金万善 | Digital respirator detector |
| CN1799501A (en) * | 2005-01-05 | 2006-07-12 | 深圳迈瑞生物医疗电子股份有限公司 | Method and apparatus for monitoring human breathing mechanics parameters based on differential pressure flow sensor |
| DE102006028134A1 (en) * | 2006-06-16 | 2007-12-20 | Wawkuschewski, Alexander | Dynamic control and measurement recording method for use with erythrocyte sedimentation rate measurement method, involves measuring gas flow rates between entrance and exit by calibrated capillary tubes with digital differential manometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101468236A (en) | 2009-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4159884B2 (en) | Portable pressure transducer and expiration pressure detection system | |
| EP1935445B1 (en) | Respiratory monitoring with cannula receiving respiratory airflows | |
| EP2044921B1 (en) | Exhalation valve for mechanical ventilator | |
| US20100071695A1 (en) | Patient wye with flow transducer | |
| US9259542B2 (en) | Respiratory monitoring with differential pressure transducer | |
| US20070113847A1 (en) | Respiratory monitoring with cannula receiving first respiratory airflows and second respiratory airflows | |
| RU2010110592A (en) | SYSTEM AND METHOD OF SUPPLY AND JOINT USE OF RESPIRATORY GAS | |
| EP2185069B1 (en) | Electro-pneumatic assembly for use in a respiratory measurement system | |
| US20100031964A1 (en) | Flow control adapter for performing spirometry and pulmonary function testing | |
| ITTO20010861A1 (en) | OXYGEN STORAGE DEVICE. | |
| CN102580213A (en) | Ventilation system of anesthesia machine and flow calibrating method of ventilation system | |
| CN101468236B (en) | Certificated valve | |
| US11083859B2 (en) | Respirator and method for determining a fresh gas flow | |
| CN105169539A (en) | Emergency ventilator | |
| CN210834590U (en) | Breathing resistance test system for protective mask | |
| TW201609209A (en) | Breathing apparatus for detecting pressure difference of airflow | |
| CN204563193U (en) | A kind of respirator cut-off equipment | |
| CN109821120A (en) | Blowing method, system and the ventilator with the system | |
| SE8206211L (en) | DEVICE FOR SEATING THE DOUBLE-LIVING BREATH FLOOD, WITHOUT EXTENDING THE HARMFUL SPACE | |
| US20100076332A1 (en) | Expiratory flow sensor system and method | |
| CN202329700U (en) | Controlling and correcting device of flow sensor | |
| JP4288142B2 (en) | Equipment for passive gas sampling | |
| CN219700725U (en) | Gas pipeline system of breathing machine | |
| CN110074894B (en) | Ventilation system of anesthesia respirator and anesthesia respirator | |
| CN210612644U (en) | Purging system and respirator with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20151225 |
|
| EXPY | Termination of patent right or utility model |