CN208212279U - Outlet valve and ventilator with it - Google Patents
Outlet valve and ventilator with it Download PDFInfo
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- CN208212279U CN208212279U CN201721723339.XU CN201721723339U CN208212279U CN 208212279 U CN208212279 U CN 208212279U CN 201721723339 U CN201721723339 U CN 201721723339U CN 208212279 U CN208212279 U CN 208212279U
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Abstract
The utility model discloses a kind of breather valve and with its ventilator, which includes: expiration valve housing, expiration valve body, PEEP valve module and flow sensor ontology；The expiration valve housing includes the first cavity and the second cavity, and first cavity is connected to second cavity；The expiration valve body is mounted in first cavity；The PEEP valve module is mounted in the outside wall surface of first cavity；The flow sensor ontology is mounted in second cavity.Outlet valve provided by the utility model is by expiration valve body, PEEP valve module together with flow sensor Ontology integration, airway pressure can be accurately controlled by pressure control mode, expiratory gas flow can also be accurately controlled by flow control mode, to provide comfortable expiratory mode for patient, and outlet valve installation and removal are convenient, and medical staff is facilitated to operate.
Description
Technical field
The utility model relates to medical instruments fields, specifically, being related to a kind of outlet valve and the ventilator with it.
Background technique
Ventilator is a kind of device of normal physiologic respiration that can replace, control or change people, is usually used to increase patient
Pulmonary ventilation volume, improve the respiratory function of patient, mitigate breathing power consumption, save the heart reservation ability of patient.
Ventilator control model mainly includes pressure control mode and flow control mode, and pressure is used to control or flow
When amount control, then need to carry out the acquisition and detection of pressure or data on flows, its airway pressure of traditional ventilator or flow
Data acquisition is obtained by external pressure detecting mouth or differential pressure flowmeter, will lead to airway pressure when exhaling to patient in this way
Or expiratory gas flow control inaccuracy, and to will lead to ventilator periphery pipeline fittings numerous for the data acquisition modes of this external
It is more, the case where increasing the connecting leg workload of nurse or doctor, while accidentally being pulled out there is also sample lines.
Utility model content
In order to solve the technical problems existing in the prior art, the utility model provide a kind of outlet valve and with its
Ventilator, it is intended to, can be to patient airway pressure or expiratory gas flow while simplifying structure, simplify doctor or nurse operation step
It is accurately controlled, to provide comfortable expiratory mode for patient.
According to the outlet valve of the utility model first aspect, comprising:
Expiration valve housing, the expiration valve housing include the first cavity and the second cavity, first cavity and institute
State the connection of the second cavity；
Expiration valve body, the expiration valve body include primary diaphragm, expiration valve body, spiral cover and connecting tube；Described
One diaphragm is located at one end of the expiration valve body, and the other end of the expiration valve body is connect with the connecting tube；It is described to exhale
Air valve ontology is fixed in first cavity by the spiral cover；
Positive end expiratory pressure PEEP (Positive End Expiratory Pressure) valve module, the PEEP valve
Component is mounted in the outside wall surface of first cavity, and the PEEP valve module includes PEEP valve housing and electromagnetic proportional valve；
And
Flow sensor ontology, the flow sensor ontology are mounted in second cavity, the flow sensor
Ontology includes sensor front end, sensor rear end, secondary diaphragm and sender unit cap, and the secondary diaphragm is set to the sensor
At the connector of front end and the sensor rear end, the flow sensor ontology is fixed on described by the sender unit cap
In two cavitys.
Mounting hole is provided on the PEEP valve housing, the electromagnetic proportional valve is mounted on described by the mounting hole
On PEEP valve housing；
Air inlet pipe, exhaust outlet and the first gas outlet, the air inlet pipe, the exhaust are offered on the PEEP valve housing
Mouth, first gas outlet are connected to the mounting hole respectively.
First cavity includes the first cavity closed end and the first cavity open end.
Sunk area is set on the primary diaphragm and stop tab, the stop tab are located at the sunk area；It is described recessed
It falls into region and first cavity closed end and forms PEEP chamber.
First cavity closed end is provided with the second gas outlet and the first snorkel, second gas outlet and described
One snorkel is connected to PEEP cavity respectively, and first snorkel is used to acquire the pressure of the PEEP chamber；Described second goes out
Port is connected to first gas outlet.
The expiration valve body includes inner and outer tubes, and the outer tube is set in the outside of said inner tube in said inner tube
Intermediate channel, the middle part closing of the intermediate channel are limited between the outer tube；
Said inner tube includes inner tube air inlet and inner tube gas outlet, and the outer tube includes outer tube air inlet and outer tube outlet
Mouthful, said inner tube gas outlet sinks into the outer tube gas outlet.
The primary diaphragm is sleeved on the outer tube gas outlet and mobilizable opening or closes the outer tube gas outlet, institute
State the mobilizable opening of stop tab or closing said inner tube gas outlet.
The second thief hatch, the downstream of second thief hatch and the intermediate channel are provided in the outside wall surface of the outer tube
Channel is connected to, and is provided with opening in the outside wall surface of the outer tube, the opening is connected to the upstream passageway of the intermediate channel；
The second snorkel, second snorkel are provided at the neighbouring first cavity open end of first cavity
It is connected to second thief hatch, for acquiring the pressure of said inner tube.
The flow sensor ontology and the open communication.
The sensor front end is provided with third thief hatch, and the sensor rear end is provided with the 4th thief hatch, and described
Three thief hatch and the 4th thief hatch are in the two sides for being located at the secondary diaphragm, and the third thief hatch and described
Four thief hatch are extended radially through respectively in the inner wall and outside wall surface of the flow sensor ontology.
To being provided with third snorkel and the 4th snorkel on second cavity, the third snorkel and the third
Thief hatch connection, the 4th snorkel is connected to the 4th thief hatch, for acquiring expiratory gas flow.
According to the ventilator of the utility model second aspect, including the outlet valve according to the utility model first aspect.
Outlet valve provided by the utility model is by expiration valve body, PEEP valve module and flow sensor Ontology integration one
It rises, airway pressure can accurately be controlled by pressure control mode, expiratory flow can also accurately be controlled by flow control mode
Amount, to provide comfortable expiratory mode for patient, and outlet valve installation and removal are convenient, and medical staff is facilitated to operate.
Detailed description of the invention
Fig. 1 is the perspective view of the outlet valve of the utility model one embodiment；
Fig. 2 is the diagrammatic cross-section of the outlet valve of the utility model one embodiment；
The perspective view of the PEEP valve module of the outlet valve of Fig. 3 the utility model one embodiment；
Fig. 4 is the diagrammatic cross-section of the expiration valve housing of the outlet valve of the utility model one embodiment；
Fig. 5 and Fig. 6 is the vertical of two different angles of the expiration valve body of the outlet valve of the utility model one embodiment
Body figure；
Fig. 7 is the perspective view of the flow sensor ontology of the outlet valve of the utility model one embodiment；
Fig. 8 and Fig. 9 is the perspective view of two different angles of the spiral cover of the outlet valve of the utility model one embodiment；
Figure 10 is the perspective view of the connecting tube of the outlet valve of the utility model one embodiment；
Figure 11 and Figure 12 is two different angles of the expiration valve housing of the outlet valve of the utility model one embodiment
Perspective view；
Figure 13 is the structural schematic diagram of the ventilator of the utility model one embodiment.
Description of symbols:
Expiration valve housing 1；First cavity 101；Second cavity 102；First cavity open end 1011；The closing of first cavity
End 1012；Second gas outlet 103；First snorkel 104；Second snorkel 105；Third snorkel 106；4th snorkel 107；
PEEP chamber 108；Third step surface 10111；4th step surface 10112；Third limiting groove 10113；Location hole 1021；
Expiration valve body 2；Primary diaphragm 201；Expiration valve body 202；Spiral cover 203；Connecting tube 204；Second thief hatch
205；Opening 206；Inner tube 2021；Outer tube 2022；Intermediate channel 2023；Inner tube air inlet 20211；Inner tube gas outlet 20212；Outside
Pipe air inlet 20221；Outer tube gas outlet 20222；First terrace 20223；Second step face 20224；First limiting groove
20225；Second limiting groove 20226；Connecting tube air inlet 2041；Connecting tube gas outlet 2042；Through-hole 2031；Stop wall
2032；Buckle 2033；Convex block 2034；Flange 2043；
PEEP valve module 3；PEEP valve housing 301；Electromagnetic proportional valve 302；Mounting hole 303；Air inlet pipe 304；Exhaust outlet
305；First gas outlet 306；
Flow sensor ontology 4；Sensor front end 401；Sensor rear end 402；Secondary diaphragm 403；Sender unit cap 404；
Third thief hatch 405；4th thief hatch 406；
Groove 5.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it
"lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to
Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above "
One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special
Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only
Indicate that first feature horizontal height is less than second feature.
The outlet valve of the utility model first aspect embodiment is described in detail with reference to the accompanying drawings.
As shown in Figures 1 to 7, according to the outlet valve of the utility model embodiment, comprising: expiration valve housing 1, outlet valve
Ontology 2, positive end expiratory pressure PEEP (Positive End Expiratory Pressure) valve module 3 and flow sensor
Ontology 4.
Specifically, expiration valve housing includes the first cavity 101 and the second cavity 102, the first cavity 101 and described second
Cavity 102 is connected to.
Expiration valve body 2 is mounted in the first cavity 101 of expiration valve housing 1.Expiration valve body 2 includes primary diaphragm
201, expiration valve body 202, spiral cover 203 and connecting tube 204.Primary diaphragm 201 is located at one end of expiration valve body 202, exhales
The other end of valve body 202 is connect with connecting tube 204.Expiration valve body 2 is fixed on expiration valve housing 1 by spiral cover 203
In first cavity 101
Positive end expiratory pressure PEEP (Positive End Expiratory Pressure) valve module 3, PEEP valve group
Part 3 is mounted in the outside wall surface of the first cavity 101.PEEP valve module 3 includes PEEP valve housing 301 and electromagnetic proportional valve
302.Further, PEEP valve module 3 is fixed by screws in the outside wall surface of the first cavity 101.
Flow sensor ontology 4 is mounted in the second cavity 102.Flow sensor ontology 4 include sensor front end 401,
Sensor rear end 402, secondary diaphragm 403 and sender unit cap 404, secondary diaphragm 403 are set to sensor front end 401 and sensor
At the connector of rear end 402, flow sensor ontology 4 is fixed in the second cavity 102 by sender unit cap 404.
In use, connecting tube 204 connects patient end to outlet valve, and the gas of patient's exhalation enters from connecting tube 204
Expiration valve body 202, then enter flow sensor ontology 4 from 202 body of outlet valve master, finally flowed out from flow sensor ontology 4.
Outlet valve provided by the utility model is by expiration valve body, PEEP valve module and flow sensor Ontology integration one
It rises, simplifies structure, facilitate operation.
In some embodiments of the utility model, further, as shown in figure 3, being arranged on PEEP valve housing 301
There is mounting hole 303, electromagnetic proportional valve 302 is mounted on PEEP valve by mounting hole 303 and installs on 301, PEEP valve housing
Air inlet pipe 304, exhaust outlet 305 and the first gas outlet 306, air inlet pipe 304, exhaust outlet 305, the first gas outlet are offered on 301
306 are connected to mounting hole 303 respectively.Air inlet pipe 304 connects external source gas, and external source gas enters mounting hole from air inlet pipe 304
303, mounting hole 303 is discharged from exhaust outlet 305.
Further, as shown in figure 4, the first cavity 101 includes the first cavity open end 1011 and the first cavity closed end
1012.Expiration valve body 2 is packed into the first cavity 101 from the first cavity open end 1011, and is fixed on first by spiral cover 203
In cavity 101.PEEP valve module 3 is mounted in the outside wall surface of the first cavity closed end 1012.
Further, sunk area is set on primary diaphragm 201 and stop tab, stop tab is located at sunk area.Work as expiration
When valve body 2 is packed into first cavity 101, the sunk area and 101 closed end of the first cavity form PEEP chamber 108.
Further, the first cavity closed end 1012 is provided with the second gas outlet 103 and the first snorkel 104, and second goes out
Port 103, the first snorkel 104 are connected to PEEP cavity 108, and the first snorkel 104 extends to extraneous first length, and first
For the value of length 5 to 8mm between 10mm, is specifically as follows, the first snorkel 104 acquires the pressure of PEEP cavity 108.
After PEEP valve module 3 is mounted on the first cavity 101, the second gas outlet 103 of the first cavity closed end 1012 and PEEP valve
The first gas outlet 306 connection in mounting base 301, external source gas are entered by the first gas outlet 306 and the second gas outlet 103
Or outflow PEEP chamber 108.Further, the first gas outlet 306 is provided with sealing ring, can prevent the gas of PEEP chamber 108
It is revealed from the first gas outlet 306 and the second gas outlet 103, improves the accuracy of the pressure value measurement of PEEP chamber 108.
Further, as shown in Figure 5 and Figure 6, expiration valve body 202 includes inner tube 2021 and outer tube 2022, outer tube 2022
The outside of inner tube 2021 is set in limit intermediate channel 2023, the middle part envelope of intermediate channel 2023 between the inner and outer pipe sections
It closes.Inner tube 2021 includes inner tube air inlet 20211 and inner tube gas outlet 20212, and outer tube 2022 includes 20221 He of outer tube air inlet
Outer tube gas outlet 20222, inner tube air inlet 20211 stretch out except outer tube air inlet 20221, and inner tube gas outlet 20212 sinks into institute
It states in outer tube gas outlet 20222.
Further, First terrace 20223 and second step face 20224 are provided in the outside wall surface of outer tube 2022, the
Two step surfaces 20224 are higher than First terrace 20223.It is recessed that the first limit is provided on the second step face 20224 of outer tube 2022
Slot 20225 and the second limiting groove 20226, the first limiting groove 20225 is adjacent to outer tube air inlet 20221, the second limiting groove
20226 adjacent to outer tube gas outlet 20222.
Further, primary diaphragm 201 is sleeved on outer tube gas outlet 20222 and mobilizable opening or closes the outer tube and go out
Port 20222, the mobilizable opening of stop tab or closing inner tube gas outlet 20212.Specifically, primary diaphragm 201 passes through outer tube
Second limiting groove 20226 in second step face 20224 be sleeved on 20222 one end of outer tube gas outlet and close outer tube gas outlet
20222, stop tab closes inner tube gas outlet 20212.Primary diaphragm 201 can be silica gel material, and stop tab can be stainless steel,
Deformation occurs under external force for primary diaphragm 201 so as to movable opening or closing outer tube gas outlet 20222, backstop
Piece then can movable opening or closing inner tube gas outlet 20212.When expiration valve body 2 is packed into the first cavity 101, first
The sunk area of diaphragm 201 and the first cavity closed end 1012 form PEEP chamber 108, which is the shape of PEEP pressure
At providing space.Primary diaphragm 201 deforms under the effect of external force, so as to adjust the size of PEEP chamber 108 with
And adjust the opening or closing of outer tube gas outlet 20222 and inner tube gas outlet 20212.Stop tab improve primary diaphragm 201 with
The leakproofness of inner tube gas outlet 20212 can accurately control the opening and closing of inner tube gas outlet 20212 by stop tab, into
And when can be precisely controlled expiration inner tube 2021 pressure (airway pressure) or expiratory gas flow, to patient with mould of comfortably exhaling
Formula.
Further, the second thief hatch 205 is provided in the outside wall surface of outer tube 2022, the second thief hatch 205 and centre are logical
The downstream passage in road 2023 is connected to, and is provided with opening 206 in the outside wall surface of outer tube 2022, the opening 206 and intermediate channel 2023
Upstream passageway connection；It is provided with the second snorkel 105 at the neighbouring first cavity open end 1011 of first cavity 101, second
Snorkel 105 is connected to the second thief hatch 205, for acquiring the pressure of inner tube 2021, i.e. airway pressure.Specifically, second is logical
Tracheae 105 is extended radially through in the inner wall and outside wall surface of the first cavity 101, and extends to extraneous first length, the first length
Value 5 between 10mm, be specifically as follows 8mm.Second thief hatch 205 and opening 206 are arranged in the second of outer tube 2022
On step surface 20224.After expiration valve body 2 is packed into expiration valve housing 1, the second of the opening 206 and expiration valve housing 1
Cavity 102 is connected to.After flow sensor ontology 4 is packed into the second cavity 102 of expiration valve housing 1, the opening 206 and flow are passed
Sensor ontology 4 is connected to.Further, 205 two sides of the second thief hatch are arranged fluted 5, are placed with sealing ring in groove 5, this is close
Seal can prevent the gas of the second sampling 205 along axial leakage, to improve the airway pressure that the second thief hatch 205 detects
The accuracy of value.
Further, as shown in fig. 7, the sensor front end 401 of flow sensor ontology 4 is provided with third thief hatch 405,
Sensor rear end 402 is provided with the 4th thief hatch 406, and third thief hatch 405 and the 4th thief hatch 406 are located at secondary diaphragm
403 two sides, and third thief hatch 405 and the 4th thief hatch 406 are extended radially through respectively in the inner wall of flow sensor ontology 4
Face and outside wall surface.Specifically, third thief hatch 405 and the 4th thief hatch 406 can be along the axial directions of flow sensor ontology 4 point
Cloth.Specifically, secondary diaphragm 403 can be PET (Polyethylene terephthalate) film, and secondary diaphragm 403 is the
Three thief hatch 405 and 406 two sides of the 4th thief hatch form pressure difference.
Further, the second cavity sets 102 and is equipped with third snorkel 106 and the 4th snorkel 107, third snorkel 106
It is connected to third thief hatch 405, the 4th snorkel 107 is connected to the 4th thief hatch 406, for acquiring expiratory gas flow.Specifically,
Third snorkel 106 and the 4th snorkel 107 are extended radially through respectively in the inner wall and outside wall surface of the second cavity 102, and are prolonged
Extraneous first length is extended to, the value of the first length is 5 between 10mm.Specifically, third snorkel 106 and the 4th snorkel
107 can be along the axial direction setting of the second cavity 102.Further, the two sides of third thief hatch 405 and the 4th thief hatch 406
Two sides be respectively set fluted 5, sealing ring is housed in groove, third thief hatch 405 and the 4th thief hatch can be prevented in this way
It collaborates between 406, it is ensured that the accuracy of the value of the expiratory gas flow measured.
In the embodiments of the present invention, external source gas enters from the air inlet pipe 304 on PEEP valve housing 301, flows through
Mounting hole 303, the first gas outlet 306 and the second gas outlet 103 flow into PEEP chamber 108；PEEP chamber 108 under external force,
Gas in PEEP chamber 108 is flowed out from the first gas outlet 306 and the second gas outlet 103 again, flows through mounting hole 303, then from exhaust
305 discharge of mouth is extraneous.Specifically, connecting tube 204 is connect with patient end, and the gas of patient's exhalation enters inner tube from connecting tube
2021, gas acts on primary diaphragm 201, and deformation occurs for primary diaphragm 201 to open inner tube gas outlet 20212, gas from
Inner tube gas outlet 20212 is flowed out, and enters flow sensor ontology 4 by the opening 206 of outer tube 2022 later, finally from flow
Sensor body 4 flows out.
When using pressure control mode, when the pressure (airway pressure) that the second thief hatch 205 collects inner tube 2021 is high
When air flue sets pressure, the opening that electromagnetic proportional valve 302 adjusts air inlet pipe 304 becomes smaller, to reduce the pressure of PEEP chamber 108,
To increase the aperture of primary diaphragm 201 Yu inner tube gas outlet 20212, there is opening 206 of more gases from outer tube 2022
Outflow achievees the purpose that reduce breath airway pressure；Conversely, when the second thief hatch 205 collects the pressure (air flue of inner tube 2021
Pressure) lower than air flue setting pressure when, electromagnetic proportional valve 302 adjust air inlet pipe 304 opening become larger, to increase PEEP chamber 108
Pressure have less gas opening from outer tube 2022 to reduce the aperture of primary diaphragm 201 Yu inner tube gas outlet 20212
Mouth 206 flows out, and achievees the purpose that increase breath airway pressure.
When using flow control mode, when passing through third thief hatch 405 and the collected expiration of the 4th thief hatch 406
When flow is higher than setting expiratory gas flow, the opening that electromagnetic proportional valve 302 adjusts the air inlet pipe 304 of PEEP valve housing 301 becomes
Greatly, to increase the pressure of PEEP chamber 108, to reduce the aperture of primary diaphragm 201 Yu inner tube gas outlet 20212, have less
Gas is flowed out from the opening 206 of outer tube 2022, achievees the purpose that reduce expiratory gas flow；Conversely, when passing through 405 He of third thief hatch
When 4th thief hatch 406 collects expiratory gas flow lower than setting expiratory gas flow, electromagnetic proportional valve 302 adjusts PEEP valve housing
The opening of 301 air inlet pipe 304 becomes smaller, to reduce the pressure of PEEP chamber 108, to increase primary diaphragm 201 and inner tube outlet
The aperture of mouth 20212 has more gases to flow out from the opening 206 of outer tube 2022, achievees the purpose that increase expiratory gas flow.
Outlet valve provided by the utility model is by expiration valve body, PEEP valve module and flow sensor Ontology integration one
It rises, airway pressure can accurately be controlled by pressure control mode, expiratory flow can also accurately be controlled by flow control mode
Amount, to provide comfortable expiratory mode for patient.
In some embodiments of the utility model, further, as shown in Figure 8 and Figure 9, spiral cover 203 has axial pass through
The through-hole 2031 worn, one end of through-hole 2031 are provided with stop wall 2032, and the other end of through-hole is provided at least one buckle
2033, at least one convex block 2034 is provided in the outside wall surface of the other end of through-hole 2031.2034 equidistantly distributed of convex block exists
In the outside wall surface of 2031 other end of through-hole.
As shown in Figure 10, connecting tube 204 includes connecting tube air inlet 2041 and connecting tube gas outlet 2042, connecting tube outlet
The internal diameter of mouth 2042 is greater than the outer diameter of inner tube air inlet 20211, and fluted 5 and flange 2043 are arranged in connecting tube gas outlet 2042,
Sealing ring is placed in groove 5.When installation, connecting tube air inlet 2041 passes through the through-hole 2031 of spiral cover 203, connecting tube gas outlet
2042 flange 2043 is against in the stop wall 2032 of 2031 one end of through-hole, and the inner tube air inlet 20211 of expiration valve body 2 is inserted into
The First terrace 20223 of connecting tube gas outlet 2042, outer tube 2022 is against on the flange 2043 of connecting tube gas outlet 2042, is prevented
Only inner tube air inlet 20211 is further inserted into connecting tube gas outlet 2042, at least one 2033 engaging of buckle on spiral cover 203
In first limiting groove 20225 in the second step face 20224 of outer tube 2022, so that connecting tube 204 is fixed on outlet valve
In main body 202.The sealing ring placed in the groove 5 of connecting tube gas outlet 2042 can prevent the gas leak in inner tube 2021,
To improve the accuracy that the pressure value (airway pressure) of inner tube 2021 measures.Since the internal diameter of connecting tube gas outlet 2042 is greater than
The outer diameter of inner tube air inlet 20211, after inner tube air inlet 20211 is inserted into connecting tube gas outlet 2042, inner tube air inlet 20211
Outside wall surface and the inner wall of connecting tube gas outlet 2042 form third cavity, in the third cavity and expiration valve body 202
Between channel 2023 downstream passage connection, it is clear that be also connected to inner tube 2021 and connecting tube 204.The gas of patient's exhalation is from even
After adapter tube 204 enters inner tube 2021, gas reaches the by the downstream passage of inner tube 2021, third cavity, intermediate channel 2023
Two thief hatch 205, to realize acquisition of second thief hatch 205 to the pressure (airway pressure) of inner tube 2021.
Further, as is illustrated by figs. 11 and 12, the first cavity open end 1011 is provided with third step surface 10111 and
Four step surfaces 10112, the 4th step surface 10112 are higher than third step surface 10111, third step surface 10111 and the 4th step surface
10112 junction is provided at least one third limiting groove 10113.The third limiting groove 10113 is distributed at equal intervals
In the junction of third step surface 10111 and the 4th step surface 10112, and the quantity and spiral cover of the third limiting groove 10113
The quantity of convex block 2034 in the other end outside wall surface of 203 through-hole 2031 is identical.In the present embodiment, third limiting groove
10113 and the quantity of convex block 2034 be respectively three.When installation, expiration valve body 2 is fallen by the convex block 2034 on spiral cover 203
In the third limiting groove 10113 of the first cavity 101, so that expiration valve body 2 is fixed on the first of expiration valve housing 1
In cavity 101, and then realize the detachable installation of expiration valve body 2 Yu expiration valve housing 1.
Further, location hole 1021 is provided on the second cavity 102.It is provided with fixing piece on sender unit cap 404, it should
Fixing piece includes back-off and button hand position.Buckle into expiration valve housing of the sender unit cap 404 of flow sensor ontology 4
In the location hole 1021 of two cavitys, so that flow sensor ontology 4 is fixed in the second cavity 102 of expiration valve housing 1,
And then realize the detachable installation of flow sensor ontology 4 Yu expiration valve housing 1.
Outlet valve provided by the utility model is by expiration valve body, PEEP valve module and flow sensor Ontology integration one
It rises, airway pressure can accurately be controlled by pressure control mode, expiratory flow can also accurately be controlled by flow control mode
Amount, to provide comfortable expiratory mode for patient, and outlet valve installation and removal are convenient, and medical staff is facilitated to operate.
According to the ventilator of the utility model second aspect embodiment, including the expiration according to the utility model first aspect
Valve.
Further, as shown in figure 13, ventilator further includes controller, driver, first pressure sensor, second pressure
Sensor, differential pressure pickup；First pressure sensor, second pressure sensor, differential pressure pickup, driver respectively with controller
Electrical connection, driver are also connect with electromagnetic proportional valve.Specifically, differential pressure pickup is differential flow sensor.First pressure
Sensor is connect with the first snorkel, for detecting PEEP cavity pressure.Second pressure sensor is connect with the second snorkel, is used for
Detect the pressure (airway pressure) of inner tube.Differential pressure pickup is connect with third snorkel and the 4th snorkel, is exhaled for detecting
Flow.Controller controls driver according to the measurement result of airway pressure or expiratory gas flow to adjust the fortune of electromagnetic proportional valve
It is dynamic, and then the openings of sizes of the air inlet of PEEP valve housing is adjusted, to realize the control to airway pressure or expiratory gas flow.
When specifically, using pressure control mode, before ventilation, airway pressure is set according to patient's condition.When expiratory phase, the
Two pressure sensors acquire inner tube airway pressure signal in real time, and airway pressure signal is fed back to controller, controller comparison acquisition
The airway pressure and air flue arrived sets pressure, if collected airway pressure is higher than setting airway pressure, controller can be issued
Driver signal, so that driver control electromagnetic proportional valve becomes smaller to adjust the air inlet opening of PEEP valve housing, to reduce
PEEP cavity pressure (first pressure sensor detects PEEP cavity pressure), thus increase the aperture of primary diaphragm Yu inner tube gas outlet,
Achieve the purpose that reduce airway pressure；Conversely, controller can be sent out if collected airway pressure is lower than the airway pressure set
To driver signal, so that driver control electromagnetic proportional valve becomes larger to adjust the air inlet opening of PEEP valve housing, to increase
Add PEEP cavity pressure (first pressure sensor detect PEEP cavity pressure), to reduce opening for primary diaphragm and inner tube gas outlet
Degree achievees the purpose that increase airway pressure.It is influenced to prevent first pressure sensor and second pressure sensor generation zero from floaing
Force samples precision is connected with zero valve of school in the front end of first pressure sensor and second pressure sensor respectively, with right in real time
It carries out school zero.
When specifically, using flow control mode, before ventilation, expiratory gas flow is set according to patient's condition.When expiratory phase, pressure
Gap sensor acquires expiratory gas flow signal in real time, and expiratory gas flow signal is fed back to controller, and controller comparison is collected
The expiratory gas flow of expiratory gas flow and setting, if collected expiratory gas flow is higher than the expiratory gas flow of setting, controller can be issued
Driver signal, so that driver control electromagnetic proportional valve becomes larger to adjust the air inlet opening of PEEP valve housing, to increase
PEEP cavity pressure (first pressure sensor detects PEEP cavity pressure), thus reduce the aperture of primary diaphragm Yu inner tube gas outlet,
Achieve the purpose that reduce expiratory gas flow；Conversely, controller can be sent out if collected expiratory gas flow is lower than the expiratory gas flow set
To driver signal, so that driver control electromagnetic proportional valve becomes smaller to adjust the air inlet opening of PEEP valve housing, to subtract
Small PEEP cavity pressure (first pressure sensor detects PEEP cavity pressure), to increase opening for primary diaphragm and inner tube gas outlet
Degree achievees the purpose that increase expiratory gas flow.Expiratory gas flow sampling precision is influenced to prevent differential pressure pickup generation zero from floaing, at it
Front end is connected with zero valve of school, to carry out school zero to it in real time.
Ventilator provided by the utility model, expiration valve body, PEEP valve module and flow sensor Ontology integration are one
It rises, airway pressure can accurately be controlled by pressure control mode, expiratory flow can also accurately be controlled by flow control mode
Amount, to provide comfortable expiratory mode for patient, and outlet valve installation and removal are convenient, and medical staff is facilitated to operate.
According to other compositions of the ventilator of the utility model embodiment and operate for those of ordinary skill in the art
For be all it is known, be not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, those skilled in the art can incite somebody to action
Different embodiments or examples described in this specification are engaged and are combined.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (12)
1. a kind of outlet valve characterized by comprising
Expiration valve housing, the expiration valve housing include the first cavity and the second cavity, first cavity and described the
The connection of two cavitys；
Expiration valve body, the expiration valve body include primary diaphragm, expiration valve body, spiral cover and connecting tube；First film
Piece is located at one end of the expiration valve body, and the other end of the expiration valve body is connect with the connecting tube；The outlet valve
Ontology is fixed in first cavity by the spiral cover；
Positive end expiratory pressure PEEP (Positive End Expiratory Pressure) valve module, the PEEP valve module
It is mounted in the outside wall surface of first cavity, the PEEP valve module includes PEEP valve housing and electromagnetic proportional valve；And
Flow sensor ontology, the flow sensor ontology are mounted in second cavity, the flow sensor ontology
Including sensor front end, sensor rear end, secondary diaphragm and sender unit cap, the secondary diaphragm is set to the sensor front end
At the connector of the sensor rear end, the flow sensor ontology is fixed on second chamber by the sender unit cap
In vivo.
2. outlet valve as described in claim 1, which is characterized in that it is provided with mounting hole on the PEEP valve housing, it is described
Electromagnetic proportional valve is mounted on the PEEP valve housing by the mounting hole；
Offer air inlet pipe, exhaust outlet and the first gas outlet on the PEEP valve housing, the air inlet pipe, the exhaust outlet,
First gas outlet is connected to the mounting hole respectively.
3. outlet valve as claimed in claim 2, which is characterized in that first cavity includes the first cavity closed end and first
Cavity open end.
4. outlet valve as claimed in claim 3, which is characterized in that sunk area and stop tab are set on the primary diaphragm,
The stop tab is located at the sunk area；The sunk area and first cavity closed end form PEEP chamber.
5. outlet valve as claimed in claim 4, which is characterized in that first cavity closed end be provided with the second gas outlet and
First snorkel, second gas outlet and first snorkel are connected to PEEP cavity respectively, and first ventilation is effective
In the pressure for acquiring the PEEP chamber；Second gas outlet is connected to first gas outlet.
6. outlet valve as claimed in claim 5, which is characterized in that the expiration valve body includes inner and outer tubes, described outer
Pipe sleeve is located at the outside of said inner tube to limit intermediate channel between said inner tube and the outer tube, the intermediate channel
Middle part closing；
Said inner tube includes inner tube air inlet and inner tube gas outlet, and the outer tube includes outer tube air inlet and outer tube gas outlet, institute
Inner tube gas outlet is stated to sink into the outer tube gas outlet.
7. outlet valve as claimed in claim 6, which is characterized in that the primary diaphragm is sleeved on the outer tube gas outlet and can
Movable opening closes the outer tube gas outlet, and the stop tab is mobilizable to open or close said inner tube gas outlet.
8. outlet valve as claimed in claim 7, which is characterized in that the second thief hatch is provided in the outside wall surface of the outer tube,
Second thief hatch is connected to the downstream passage of the intermediate channel, and opening is provided in the outside wall surface of the outer tube, described
Opening is connected to the upstream passageway of the intermediate channel；
The second snorkel, second snorkel and institute are provided at the neighbouring first cavity open end of first cavity
The connection of the second thief hatch is stated, for acquiring the pressure of said inner tube.
9. outlet valve as claimed in claim 8, which is characterized in that the flow sensor ontology and the open communication.
10. outlet valve as claimed in claim 9, which is characterized in that the sensor front end is provided with third thief hatch, described
Sensor rear end is provided with the 4th thief hatch, and the third thief hatch and the 4th thief hatch are being located at second film
The two sides of piece, and the third thief hatch and the 4th thief hatch are extended radially through respectively in the flow sensor ontology
Inner wall and outside wall surface.
11. outlet valve as claimed in claim 10, which is characterized in that on second cavity to be provided with third snorkel and
4th snorkel, the third snorkel are connected to the third thief hatch, the 4th snorkel and the 4th thief hatch
Connection, for acquiring expiratory gas flow.
12. a kind of ventilator, which is characterized in that including outlet valve such as of any of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721723339.XU CN208212279U (en) | 2017-12-12 | 2017-12-12 | Outlet valve and ventilator with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721723339.XU CN208212279U (en) | 2017-12-12 | 2017-12-12 | Outlet valve and ventilator with it |
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| Publication Number | Publication Date |
|---|---|
| CN208212279U true CN208212279U (en) | 2018-12-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721723339.XU Active CN208212279U (en) | 2017-12-12 | 2017-12-12 | Outlet valve and ventilator with it |
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| Country | Link |
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| CN (1) | CN208212279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113975581A (en) * | 2021-11-01 | 2022-01-28 | 河北谊安奥美医疗设备有限公司 | Expiratory valve of anesthesia respirator |
| CN114146282A (en) * | 2021-12-08 | 2022-03-08 | 山东大学 | End-expiratory positive pressure valve for portable respirator and control method thereof |
-
2017
- 2017-12-12 CN CN201721723339.XU patent/CN208212279U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113975581A (en) * | 2021-11-01 | 2022-01-28 | 河北谊安奥美医疗设备有限公司 | Expiratory valve of anesthesia respirator |
| CN114146282A (en) * | 2021-12-08 | 2022-03-08 | 山东大学 | End-expiratory positive pressure valve for portable respirator and control method thereof |
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