CN100546667C - Outlet valve - Google Patents
Outlet valve Download PDFInfo
- Publication number
- CN100546667C CN100546667C CNB2006100216196A CN200610021619A CN100546667C CN 100546667 C CN100546667 C CN 100546667C CN B2006100216196 A CNB2006100216196 A CN B2006100216196A CN 200610021619 A CN200610021619 A CN 200610021619A CN 100546667 C CN100546667 C CN 100546667C
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- push rod
- valve
- pedestal
- diaphragm
- outlet valve
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Abstract
The invention discloses a kind of outlet valve, it comprises motor, spool, diaphragm, first push rod, the pedestal and first elastic component, this spool has air inlet, gas outlet and valve port, this first push rod passes through the first elastic component resiliency supported on a pedestal, this motor drives the pedestal band by drive mechanism and the first push rod rectilinear motion, this diaphragm has elasticity, its edge is fixed on this spool, wherein portion is positioned on the movement locus of this first push rod, this valve port is positioned on this diaphragm-operated movement locus, makes the aperture of this diaphragm according to this valve port of expiration situation dynamic adjustments.Owing to adopt motor as driving force, so response speed is very fast; Since the diaphragm of envelope valve port with the elastic force of elastic component as retentivity, so the aperture of valve port can dynamic adjustments; Because this outlet valve can adopt drive mechanism commonly used,, realize than being easier to so cost is lower.
Description
Technical field
The present invention relates to the outlet valve field, especially about a kind of automatically controlled outlet valve.
Background technology
The outlet valve device is the important component part in the respirator, and it mainly acts on is to cooperate respirator to make respiratory movement, specifically is divided into: close when (1) is air-breathing, the gas that respirator is provided can all be supplied with patient, in addition, still can continue to close, make it to hold one's breath at air-breathing last outlet valve; Just open when (2) exhaling, make it to exhale.When airway pressure was lower than PEEP (positive end-expiratory pressure, end expiratory positive pressure), the part of exhaling must be closed, and keeps PEEP, and when airway pressure was higher than PEEP, outlet valve partially opened, and reduced to the PEEP value up to pressure; (3) during system cut-off, outlet valve is opened automatically, and expiratory resistance is little, guarantees that patient can cosily free breath.Existing outlet valve mainly contains two big classes: gas control outlet valve and automatically controlled outlet valve.
The gas control outlet valve is to control gas as driving force.Control gas can be by solenoid control, and as pilot valve, the flow of control gas can be very little with electromagnetic valve, and makes and keep the PEEP that sets in the air flue, and the PEEP value can be adjusted by the flow velocity of pilot valve.The envelope valve port diaphragm with control gas pressure as retentivity, in the dynamic process of patient exhales, when patient just by the air-breathing moment that is converted into expiration, expiratory airflow is very big, intra-airway pressure is during much larger than the PEEP value, and this moment, the diaphragm aperture was bigger, and breath can be discharged to rapidly in the atmosphere; And when patient exhales soon finished, when intra-airway pressure only was a bit larger tham the PEEP value, the diaphragm aperture was less, and breath is discharged in the atmosphere at a slow speed and reposefully.Therefore, the characteristics of gas control outlet valve are that retentivity is very steady, and the diaphragm structure of envelope valve port can be according to patient exhales situation dynamic adjustments, and price is relatively cheap; Shortcoming is that response speed is slower, when pressure in the air flue raises suddenly, can't open outlet valve rapidly and cause the patient respiration discomfort to reduce pressure, can't support some intelligentized ventilating mode, and it is also comparatively serious to the waste of source of the gas, therefore, this outlet valve generally adopts on low and middle-grade respirators.The relevant patent of this outlet valve can be 5,065,746,5,813 referring to the patent No., 399,5,918,597,5,632,270 and 5,452, and 714 United States Patent (USP).
The automatically controlled outlet valves of the overwhelming majority with proportion electro-magnet or voice coil motor as driving force.The power of electromagnet portion output and current related, irrelevant with the displacement of output.The envelope valve port diaphragm with electromagnetic force as retentivity, can be according to patient exhales situation dynamic adjustments.The characteristics of this outlet valve are that response speed is very fast, realize the adjusting of PEEP value by the flow through electric current of solenoid of adjusting, and frame for movement is very simple, has very high reliability.Can make expiratory phase and the inspiratory phase of respirator in mechanical ventilation all can realize initiatively successive control after adopting active outlet valve, keep pressure with the preset pressure phased constant.The airway pressure superelevation that any reason for example in inspiratory phase, occurs, intake valve moment of respirator closes, thus outlet valve is opened release pressure institute's governor pressure is maintained simultaneously, promptly realizes active expiration in inspiratory phase.But because proportion electro-magnet or voice coil motor are not general parts, generally by specialized factory's specialized designs, so price is relatively costly.Generally all adopt this outlet valve on the modern high-grade respirator.The patent that this outlet valve is relevant can be 5,065,746,5,927 referring to the patent No., 275 and 5,127, and 400 United States Patent (USP).
Some automatically controlled outlet valve is driving force with the motor, and the step number that the operation of motor circumferencial direction is certain is folded to the rectilinear direction certain distance, and corresponds to certain aperture of outlet valve valve port and vapour lock.The characteristics of this outlet valve be response speed between gas control outlet valve and voice coil motor outlet valve, cost is lower, the drive mechanism tradition realizes than being easier to.But do not have diaphragm structure, do not have corresponding retentivity, in the whole process of patient expired gas, valve port opening is all identical, and the speed that breath is discharged can't dynamic adjustments.Therefore, adopt the respirator of this outlet valve few.The patent that this outlet valve is relevant can be 5,072,729 United States Patent (USP) referring to the patent No..
In sum, there is following defective in existing outlet valve device:
1) gas control outlet valve response speed is slower, can't open outlet valve rapidly and cause the patient respiration discomfort to reduce pressure when pressure in the air flue raises suddenly, can't support some intelligentized ventilating mode.
2) relatively costly with proportion electro-magnet or voice coil motor as the automatically controlled outlet valve price of driving force; And be the automatically controlled outlet valve of driving force with the motor, there is not diaphragm structure, there is not corresponding retentivity, in the whole process of patient expired gas, valve port opening is all identical, and the speed that breath is discharged can't dynamic adjustments.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the deficiencies in the prior art, provides that a kind of response speed is fast, cost is low and can be according to the outlet valve of patient exhales situation dynamic adjustments.
The technical solution adopted for the present invention to solve the technical problems is: this outlet valve comprises motor, spool, diaphragm, first push rod, the pedestal and first elastic component, this spool has air inlet, gas outlet and valve port, on this spool pressure transducer is installed, the output termination control unit of this pressure transducer, the output termination motor of this control unit, this first push rod passes through the first elastic component resiliency supported on a pedestal, this motor drives the pedestal band by drive mechanism and the first push rod rectilinear motion, this diaphragm has elasticity, its edge is fixed on this spool, wherein portion is positioned on the movement locus of this first push rod, this valve port is positioned on this diaphragm-operated movement locus, makes the aperture of this diaphragm according to this valve port of expiration situation dynamic adjustments.
Described outlet valve also comprises second push rod and second elastic component, this second push rod passes through this second elastic component resiliency supported on a pedestal, one motor the second push rod rectilinear motion by this pedestal band of a drive mechanism transmission, and this diaphragm also is positioned on the movement locus of this second push rod.
Described first, second push rod passes through first, second elastic component resiliency supported respectively on same pedestal, and this pedestal is driven by a drive mechanism by a motor, and this second push rod motion relatively of this first push rod.
Described motor is fixed on the electric machine support, is installed with guide pillar on this electric machine support, and correspondence is provided with guide hole on this pedestal, and this guide pillar inserts corresponding guide hole, and is arranged with return springs on this guide pillar.
Described pedestal has axial accepting hole, first push rod inserts this accepting hole downwards, first elastic component is enclosed within on this first push rod and its two ends compress the hole wall of this first push rod and this accepting hole respectively, this second ejector rob axis is to running through, and it entangles this first push rod, and this first push rod protrudes upward second push rod, second elastic component entangles this pedestal, and its two ends compress the outer wall of this second push rod and pedestal respectively, and the bottom of this second push rod fastens a sleeve, and this sleeve is fixed on this pedestal.
The rigidity of described first push rod is less than the rigidity of second push rod.
Described spool comprises valve body and valve gap, this valve gap is fixed on the below of this valve body and diaphragm-operated edge is pressed on this valve body, and enclose valve pocket between this valve body and the valve gap, this diaphragm places in this valve pocket and this valve pocket is divided into first, second valve pocket of mutual partition.
For each push rod, drive mechanism is a screw pair, and the motor shaft of this motor and the subsidiary leading screw of this feed screw nut connect firmly, this pedestal of the subsidiary nut support of this feed screw nut.
The invention has the beneficial effects as follows, owing to adopt motor as driving force, so response speed is very fast; Since the diaphragm of envelope valve port with the elastic force of elastic component as retentivity, so the aperture of valve port can dynamic adjustments; Because this outlet valve can adopt drive mechanism commonly used,, realize than being easier to so cost is lower.
Description of drawings
Fig. 1 is the axonometric chart of outlet valve of the present invention.
Fig. 2 is the cutaway view of outlet valve of the present invention when being in initial position.
Fig. 3 is the three-dimensional exploded view of outlet valve of the present invention.
Fig. 4 is the partial enlarged drawing at P indication place among Fig. 2.
The specific embodiment
See also Fig. 1 to Fig. 4, outlet valve of the present invention is vertically to place when using, and it comprises electric-motor drive unit 10, support and sensor unit 20, dual spring push rod unit 30 and outlet valve body unit 40.
This electric-motor drive unit 10 is used to whole outlet valve that power is provided, it comprises motor 11 and drive mechanism, this motor is used to provide power, this drive mechanism is used for rotatablely moving of motor is converted to rectilinear motion, in the present embodiment, this drive mechanism is a screw pair, and the subsidiary leading screw 12 of this feed screw nut is the part that motor shaft is exposed.
This support and sensor unit 20 connect electric-motor drive unit 10 and dual spring push rod unit 30, and it provides support and linear movement guide for whole outlet valve.This support and sensor unit 20 comprise electric machine support 21, guide rod 26, initial alignment post 28, photoelectric sensor 22 and pick off catch 24.This electric machine support 21 roughly is " U " type of lying on one's side, and it comprises base plate 211, top board 212 and connect this base plate 211 and the side plate 213 of top board 212 corresponding edges that this base plate 211 and top board 212 all have the through hole 214,215 that runs through setting.This motor 11 is fixed on the lower surface of this base plate 211 by screw 13.This guide rod 26 has two and be parallel to each other, and it all is fixed on the base plate 211 by screw 29.This initial alignment post 28 has two, these two initial alignment posts 28 are enclosed within respectively on two guide pillars 26, and these two initial alignment posts 28 all are attached at the upper surface of this base plate 211, and the part that these two guide pillars 26 stretch out two initial alignment posts 28 all is with back-moving spring 27.This photoelectric sensor 22 is fixed on by screw 23 on the side plate 213 of electric machine support, and this pick off catch 24 is fixed on the dual spring push rod unit 30 by screw 25.By the setting of this photoelectric sensor 22 and pick off catch 24, the rectilinear motion of whole dual spring push rod unit 30 is carried out initial alignment.
This dual spring push rod unit 30 comprises pedestal 37, sleeve 35, pretension push rod 31, preloading spring 32, compresses push rod 33 and holddown spring 34.The position of these pedestal 37 corresponding two guide rods 26 is provided with two guide holes, two guide rods 26 insert respectively two guide holes and with corresponding guide hole matched in clearance.This pedestal 37 has first accepting hole 372 that is recessed into vertically from its upper surface and second accepting hole 373 that is recessed into vertically from its lower surface, this first, second accepting hole 372,373 is separated by next door 374, this next door 374 is provided with the 3rd accepting hole 375 that axially runs through, this first accepting hole 372 is communicated with second accepting hole 373 by the 3rd accepting hole 375, and the bottom of this pedestal 37 also radially is extended with first flange 376.Pick off catch 24 is fixed on this pedestal 37, and the subsidiary nut 15 of feed screw nut is fixed on the below of this pedestal 37 by screw 14.This sleeve 35 has the shoulder hole that axially runs through, this shoulder hole is made up of the internal diameter of coaxial communication less first hole 351 and the second bigger hole 352 of internal diameter, the intersection in this first, second hole forms first step face 353, the internal diameter in this first, second hole is all greater than the external diameter of pedestal, and this telescopic bottom also radially is extended with second flange 354.This pretension push rod 31 is the multidiameter shape, and it comprises first, second and third section pretension push rod 311,312,313 coaxial and that one connects in turn, and the diameter of this second section pretension push rod 312 is greater than the diameter of first, the 3rd section pretension push rod 311,313.This preloading spring 32 is enclosed within on the 3rd section pretension push rod 313.This compresses push rod 33 and has the shoulder hole that axially runs through, this shoulder hole is made up of the internal diameter of coaxial communication less the 3rd hole 331 and the 4th bigger hole 332 of internal diameter, three, the intersection in the 4th hole forms second step face 333, and this top that compresses push rod has also axially protruded out and has compressed boss 334 (the 3rd hole is run through this and compressed boss), and its bottom has the 3rd flange 335 that radially extends.This holddown spring 34 is enclosed within on the pedestal 37.In the present embodiment, motor shaft, pedestal, sleeve, pretension push rod and compress the dead in line of push rod, the axis of two guide rods is all parallel with the axis of this motor shaft, and this axis direction (axially) is a gravity direction, radially is horizontal direction.
This outlet valve body unit 40 is used for forming a two-way valve between patient expired gas and ambient atmosphere, and it comprises spool, diaphragm 45, diaphragm upper backup pad 44 and diaphragm lower supporting plate 46.This spool is made up of valve body 41 and valve gap 47.This valve body 41 has inlet chamber and outlet chamber, this inlet chamber has air inlet 51 and valve port 53, this air inlet 51 is used to receive patient expired gas, preload pressures different between this valve port 53 and the diaphragm 45 can form different end expiratory positive pressure (PEEP), if when the preload pressure between this valve port 53 and the diaphragm 45 was set to surpass maximum PEEP value, outlet valve cut out fully.This outlet chamber has gas outlet 52, and this gas outlet 52 leads to atmosphere.This valve gap 47 has through hole 471 that axially runs through and the 4th, the 5th flange 472,473 that radially extends, the 4th flange 472 is positioned at the top of this valve gap 47, it is fixed on the below of this valve body 41 and encloses a valve pocket with this valve body 41 by screw 42, this valve pocket is communicated with the through hole 471 of this valve gap 47, the 5th flange 473 is positioned at the bottom of this valve gap 47, and it is fixed on the top board 212 of pedestal by screw 48.This diaphragm 45 has elasticity, and it places in this valve pocket, and its edge is pressed on the valve body 41 by valve gap 47, thereby by this diaphragm this valve pocket is separated into first, second valve pocket 474,475, and this first, second valve pocket 474,475 is not communicated with mutually.This diaphragm upper backup pad 44, diaphragm 45 and diaphragm lower supporting plate 46 are connected together by screw 43, guarantee diaphragm 45 be subjected under the axial force condition with valve port 53 can be on whole circumference even contact.In addition, this valve body also has the pressure sensor interface 54 that is communicated with inlet chamber, this pressure sensor interface is used for the setting pressure pick off, if this pressure sensor monitoring is to the interior pressure anomaly of inlet chamber, then feed back to the control unit of outlet valve, and then the control step motor movement, guarantee that the pressure in the inlet chamber is in normal range.
After this outlet valve installs, motor 11 is fixed on the base plate 211 of electric machine support, the screw 12 of its motor shaft protrudes upward the through hole 214 of electric machine support base plate and stretches in second accepting hole 352 of pedestal, supports this pedestal 37 with 15 of these leading screw 12 nut engaged; Two guide holes of this pedestal 37 cooperate with two guide rods 26 respectively, thereby make the straight line lifting under the guiding of two guide rods 26 of this pedestal 37; This preloading spring 32 is enclosed within on the 3rd section pretension push rod 313, its top and bottom compress the lower surface of second section pretension push rod 312 and the upper surface in pedestal next door 374 respectively, first section pretension push rod 311 protrude upward compress push rod compress boss 334, the upper surface of second section pretension push rod 312 is attached at 313 of 333, the three sections pretension push rods of second step face that compress push rod and stretches into the first, the 3rd accepting hole from top to bottom in turn; This holddown spring 34 is enclosed within on the outer wall of pedestal, this sleeve 35 entangles this pedestal 37 and is fixed on by screw 36 on first flange 376 of pedestal, this the 3rd flange 335 that compresses push rod fastens telescopic first step face 353, and the top of this holddown spring and bottom compress the 3rd flange 335 that compresses push rod and first flange 376 of pedestal respectively; Pretension push rod 31 and compressing in the through hole 471 that push rod 33 all upwards stretches into valve gap.When initial position, pretension push rod 31 and compress push rod 33 all to have certain height poor with diaphragm lower supporting plate 46, diaphragm 45 then separates fully with valve port 53; It is poor also to have certain height between pedestal 37 and the initial alignment post 28, and the back-moving spring 27 that is enclosed within on two guide rods is original length.
The operation principle of this outlet valve is as follows: the rigidity of this preloading spring 32 is 1.0N/mm, and the rigidity of this holddown spring 34 is 3.0N/mm.Under the guide effect of the driving of motor 11 and guide rod 26, dual spring push rod unit 30 integral body are moved from bottom to top.When 30 mass motions of dual spring push rod unit (this moment, the displacement of pretension push rod was 2.0mm) when pretension push rod 31 touches diaphragm lower supporting plate 46, and then with diaphragm top upwards, when diaphragm 45 with after valve port 53 contacts, diaphragm 45 no longer move (this moment, the displacement of pretension push rod was 4.0mm).At this moment, if motor 11 is rotated further and make dual spring push rod unit 30 continue to move upward, then pretension push rod 31 itself no longer moves upward, and makes preloading spring 32 self form certain decrement, the PEEP value that certain decrement is corresponding certain.The precision of rectilinear motion of electric-motor drive unit is 0.05mm/step, so motor 11 every fortune move a step, the decrement of preloading spring is changed to 0.05mm, is 0.5cmH2O corresponding to the PEEP value.(corresponding to the PEEP value is 0～40cmH2O), compresses push rod 33 and can not touch diaphragm lower supporting plate 46, and therefore in this process, the thrust between valve port and the diaphragm all comes from preloading spring 32 in 0～4mm scope when the decrement of preloading spring 32.When dual spring push rod unit continues to move upward under motor-driven (when the decrement of preloading spring surpasses 4.0mm), compress push rod 33 and pretension push rod 31 touches diaphragm lower supporting plate 46 simultaneously, holddown spring 34 also begins compression, be that preloading spring 32 and holddown spring 34 work (this moment back-moving spring 27 also be compressed) simultaneously, the equivalent stiffness of two springs is 4.0N/mm, this moment two tight 2mm of spring repress, just can realize the pre-pressing force of 12.0N between valve port and the diaphragm, being converted into airway pressure is 120cmH2O, is enough to close outlet valve.When system cut-off, back-moving spring 27 pushes up pedestal 37 downwards, adding motor screw mandrel 12 itself can not self-locking, therefore this pedestal 37 will fall on the initial alignment post 28 rapidly under back-moving spring 27 and self gravitation dual function, guarantee pretension push rod 31 and compress push rod 33 and all separate with diaphragm lower supporting plate 46, and then guarantee that diaphragm 45 can get back to initial undeformed position, and the distance between the valve port 53 is bigger, and final the assurance can not caused bigger resistance to patient expired gas.
This outlet valve in use, when patient by the air-breathing moment that is converted into expiration, expiratory airflow is big, pressure in the air flue (inlet chamber) is during much larger than PEEP value (being provided by preloading spring 32), the aperture of valve port this moment big (inlet chamber, first valve pocket and outlet chamber connection), the gas of exhalation can be discharged to rapidly in the atmosphere; When patient exhales soon finished, the pressure in the air flue was a bit larger tham the PEEP value, the aperture of valve port this moment less (inlet chamber, first valve pocket and outlet chamber are communicated with), and breath can be discharged at a slow speed and stably in the atmosphere; When patient inhales, then preloading spring and holddown spring act on diaphragm simultaneously, make diaphragm complete closed valve port (being that valve port opening is zero), thereby turn-off whole outlet valve; When system cut off the power supply suddenly, diaphragm broke away from valve port and maximum with the distance of valve port fully, and this moment, the aperture of valve port was maximum.
Among the present invention, pretension push rod and compress push rod and can drive respectively, when just driving the pretension push rod and withstand diaphragm (preload pressure is provided by preloading spring), whole outlet valve plays the PEEP function; When driving pressure just presses closer masthead when living diaphragm (thrust is provided by holddown spring), whole outlet valve plays to be opened and the shutoff effect.Certainly, also can be only provide thrust between diaphragm and the valve port, realize the unlatching and the shutoff of diaphragm-operated pretension and outlet valve by this push rod and this spring by a push rod and spring.
Among the present invention, pretension push rod and compress push rod and can drive respectively, when just driving the pretension push rod and withstand diaphragm, whole outlet valve plays the PEEP function; When driving the pretension push rod simultaneously and compress push rod when withstanding diaphragm, whole outlet valve plays the shutoff effect.
Among the present invention, motor can also drive dual spring push rod unit moving linearly by drive mechanisms such as cam or rack-and-pinion.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (7)
1. outlet valve, it is characterized in that: comprise motor, spool, diaphragm, first push rod, the pedestal and first elastic component, this spool has air inlet, gas outlet and valve port, on this spool pressure transducer is installed, the output termination control unit of this pressure transducer, the output termination motor of this control unit, this first push rod passes through the first elastic component resiliency supported on a pedestal, this motor drives the pedestal band by drive mechanism and the first push rod rectilinear motion, this diaphragm has elasticity, its edge is fixed on this spool, wherein portion is positioned on the movement locus of this first push rod, this valve port is positioned on this diaphragm-operated movement locus, makes the aperture of this diaphragm according to this valve port of expiration situation dynamic adjustments.
2. according to the described outlet valve of claim 1, it is characterized in that: also comprise second push rod and second elastic component, this second push rod passes through this second elastic component resiliency supported on this pedestal, this motor the second push rod rectilinear motion by this pedestal band of this drive mechanism transmission, this diaphragm also is positioned on the movement locus of this second push rod, and this second push rod motion relatively of this first push rod.
3. according to the described outlet valve of claim 2, it is characterized in that: described motor is fixed on the electric machine support, is installed with guide pillar on this electric machine support, and correspondence is provided with guide hole on this pedestal, this guide pillar inserts corresponding guide hole, and is arranged with return springs on this guide pillar.
4. according to the described outlet valve of claim 3, it is characterized in that: described pedestal has axial accepting hole, first push rod inserts this accepting hole downwards, first elastic component is enclosed within on this first push rod and its two ends compress the hole wall of this first push rod and this accepting hole respectively, this second ejector rob axis is to running through, it entangles this first push rod, this first push rod protrudes upward second push rod, second elastic component entangles this pedestal, and its two ends compress the outer wall of this second push rod and pedestal respectively, the bottom of this second push rod fastens a sleeve, and this sleeve is fixed on this pedestal.
5. according to the described outlet valve of claim 4, it is characterized in that: the rigidity of described first push rod is less than the rigidity of second push rod.
6. according to any described outlet valve among the claim 1-5, it is characterized in that: described spool comprises valve body and valve gap, this valve gap is fixed on the below of this valve body and diaphragm-operated edge is pressed on this valve body, and enclose valve pocket between this valve body and the valve gap, this diaphragm places in this valve pocket and this valve pocket is divided into first, second valve pocket of mutual partition.
7. according to any described outlet valve among the claim 1-5, it is characterized in that: for each push rod, drive mechanism is a screw pair, and the motor shaft of this motor and the subsidiary leading screw of this feed screw nut connect firmly, this pedestal of the subsidiary nut support of this feed screw nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100216196A CN100546667C (en) | 2006-08-11 | 2006-08-11 | Outlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100216196A CN100546667C (en) | 2006-08-11 | 2006-08-11 | Outlet valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101121054A CN101121054A (en) | 2008-02-13 |
| CN100546667C true CN100546667C (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100216196A Expired - Fee Related CN100546667C (en) | 2006-08-11 | 2006-08-11 | Outlet valve |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757710A (en) * | 2008-12-11 | 2010-06-30 | 北京谊安医疗系统股份有限公司 | Gas flow velocity adjustment device and method for controlling gas flow velocity in life-support machine |
| CN101554510B (en) * | 2009-05-18 | 2011-05-11 | 浙江新丰医疗器械有限公司 | Expiratory valve for respirator |
| CN103055401B (en) * | 2011-10-19 | 2015-09-30 | 北京谊安医疗系统股份有限公司 | Respirator and proportioning valve |
| CN107096106B (en) * | 2012-06-27 | 2020-03-27 | 费雪派克医疗保健有限公司 | Breathing assistance apparatus |
| CN104225756A (en) * | 2013-06-14 | 2014-12-24 | 北京谊安医疗系统股份有限公司 | Exhalation valve |
| DE102014017954B4 (en) * | 2014-12-05 | 2018-05-30 | Dräger Safety AG & Co. KGaA | Counterlung for a circuit respirator and respiratory protective device |
| CN106267511A (en) * | 2015-06-26 | 2017-01-04 | 北京谊安医疗系统股份有限公司 | A kind of active type electric control outlet valve |
| CN106267497B (en) * | 2016-10-24 | 2018-10-23 | 湖南万脉医疗科技有限公司 | A kind of high-accuracy ventilation flow rate control system and medical breathing machine |
| CN106806970B (en) * | 2017-03-07 | 2018-12-25 | 刘淑琴 | A kind of internal medicine nursing diagnostic monitoring breathing equipment |
| CN109667966A (en) * | 2019-01-02 | 2019-04-23 | 中山市铧禧电子科技有限公司 | A kind of automatic pressure regulating mechanism |
| TWI681788B (en) * | 2019-03-14 | 2020-01-11 | 許定洋 | Respirator |
| DE102020000335A1 (en) * | 2020-01-21 | 2021-07-22 | Drägerwerk AG & Co. KGaA | Valve arrangement with shut-off unit and procedure for a ventilator |
| CN112763127B (en) * | 2020-12-28 | 2022-09-06 | 南京沃天科技股份有限公司 | Pneumatic pressure transmitter |
| CN113594975B (en) * | 2021-08-23 | 2022-10-04 | 广东电网有限责任公司 | Cable insulation girdling machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5065746A (en) * | 1988-07-07 | 1991-11-19 | Dragerwerk | Expiration valve control arrangement for a ventilating apparatus |
| US5072729A (en) * | 1986-11-04 | 1991-12-17 | Bird Products Corporation | Ventilator exhalation valve |
-
2006
- 2006-08-11 CN CNB2006100216196A patent/CN100546667C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5072729A (en) * | 1986-11-04 | 1991-12-17 | Bird Products Corporation | Ventilator exhalation valve |
| US5065746A (en) * | 1988-07-07 | 1991-11-19 | Dragerwerk | Expiration valve control arrangement for a ventilating apparatus |
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| Publication number | Publication date |
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| CN101121054A (en) | 2008-02-13 |
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