CN110522396A - A kind of medical endoscope and its aqueous vapor switching valve - Google Patents
A kind of medical endoscope and its aqueous vapor switching valve Download PDFInfo
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- CN110522396A CN110522396A CN201910832251.9A CN201910832251A CN110522396A CN 110522396 A CN110522396 A CN 110522396A CN 201910832251 A CN201910832251 A CN 201910832251A CN 110522396 A CN110522396 A CN 110522396A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/015—Control of fluid supply or evacuation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- Heart & Thoracic Surgery (AREA)
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Abstract
The present invention discloses a kind of aqueous vapor switching valve, is opened in air inlet, gas outlet, inlet, liquid outlet on its side wall, and the spool that can be slidingly arranged at along the length direction of valve body in it including valve body and along the length direction of valve body；When spool slides into first state position, air inlet is connected with gas outlet, and inlet and liquid outlet end；When spool slides into the second state position, air inlet and gas outlet are ended, and inlet is connected with liquid outlet.Aqueous vapor switching valve disclosed in this invention, it is reciprocatingly slided by spool valve is intracorporal, aqueous vapor switching valve can be made to be respectively at supply gas operating condition and infusion operating condition, the gas or liquid needed is independently conveyed to endoscope tip, gas-vapor mix, aqueous vapor leakage, aqueous vapor clogging can be effectively avoided, while simple to operate, operating efficiency is higher when medical staff uses, the structure of aqueous vapor switching valve is simple, lower production costs.Invention additionally discloses a kind of medical endoscope, its advantages are as described above.
Description
Technical field
The present invention relates to the field of medical instrument technology, in particular to a kind of aqueous vapor switching valve.The invention further relates to a kind of doctors
Use endoscope.
Background technique
With the development of Chinese medical level, more and more medical instruments have been used widely.
Medical endoscope is that a kind of collection traditional optical, ergonomics, precision machinery, hyundai electronics, mathematics, software are equal to
The detecting instrument of one has imaging sensor, optical lens, light source illumination, mechanical device etc., can enter through natural hole
Human body is intracavitary, for checking the cavity communicated with the outside world (such as alimentary canal, respiratory tract, the urinary tract), or can be sent by notch
Enter endoscope, for checking closed body cavity (such as thoracic cavity, abdominal cavity, articular cavity).Medical endoscope has been widely used for respectively
Department checks that the position reached in human body by medical endoscope can be divided into endoscope for ENT, stomatology endoscope, in dentistry
Sight glass, neural mirror, urethrocystoscope, laparoscope, arthroscope, nasal sinus mirror, laryngoscope etc..
Currently, endoscopic system is widely used in medical diagnosis, liquid feeding device of supplying gas is provided with into body cavity, it can
Water, medical fluid, air etc. are sent into body cavity as needed.In existing technology, endoscope is supplied gas with liquor charging by being set to
Fluid changing-over valve in endoscopic procedure portion is controlled, be respectively arranged on the fluid changing-over valve air inlet, gas outlet, into
Liquid mouth and liquid outlet, then respectively closed air inlet, gas outlet, inlet and liquid outlet by many sealing rings.When need
Will the air inlet or when feed liquor into body cavity, the dynamic of each sealing ring can be controlled by operation button corresponding on fluid changing-over valve
Make, so that corresponding sealing ring is opened or keeps closing, to realize being respectively turned on or ending for each nozzle.
However, the internal structure of fluid changing-over valve in the prior art is complicated, components are numerous, lead to higher cost；In
It carries out generally requiring to employ multiple operation buttons when aqueous vapor handover operation, the operating procedure of aqueous vapor switching is comparatively laborious, and aqueous vapor is cut
It changes inefficient.If also, the cooperation of sealing ring and body cavity is bad or push the wrong key, is easy to appear gas leakage leak, logical
The problems such as gas water flowing is bad or gas-vapor mix.
Therefore, how simplied system structure, reduce production cost, improve aqueous vapor handover operation efficiency, prevent operational process
In occur gas-vapor mix, aqueous vapor leakage, aqueous vapor clogging, be the technical issues of those skilled in the art are faced.
Summary of the invention
The object of the present invention is to provide a kind of aqueous vapor switching valves, can simplify own system structure, reduce production cost, mention
High aqueous vapor handover operation efficiency prevents occurring gas-vapor mix, aqueous vapor leakage, aqueous vapor clogging in operational process.Of the invention
Another object is to provide a kind of medical endoscope.
In order to solve the above technical problems, the present invention provides a kind of aqueous vapor switching valve, including valve body and along the length of the valve body
Degree direction is opened in air inlet, gas outlet, inlet, liquid outlet on its side wall, and can be along the length direction of the valve body
The spool being slidingly arranged in it；
When the spool slides into first state position, the air inlet is connected with the gas outlet, and the inlet
End with the liquid outlet；
When the spool slides into the second state position, the air inlet and the gas outlet are ended, and the inlet
It is connected with the liquid outlet.
Preferably, the air inlet, the gas outlet, the inlet and the liquid outlet are on the side wall of the valve body
It is arranged successively from bottom to up along its length, and the valve core upper sleeve is equipped in its natural state in the inner cavity of the valve body
The middle isolation air inlet is isolated with the first isolation ring of the gas outlet, the isolation gas outlet with the second of the inlet
The third isolation ring of ring and the isolation inlet and the liquid outlet.
Preferably, the inner hollow of the spool, and offer on the bottom end face of the spool and be connected to inner passage
Air intake duct, the exhaust duct being connected to inner passage is offered in the top end surface of the spool, in its natural state will be from
The gas imported in the air inlet is discharged outside to by the air intake duct and the exhaust duct.
Preferably, it is opened at the position on the side wall of the spool between first isolation ring and second isolation ring
Air guide port equipped with the connects with the internal cavities with the valve body, and foldable airtight sealing plate is covered on the air guide port, with
When the exhaust duct is blocked the gas that is imported from the air inlet can wash open the airtight sealing plate and with the outlet
Mouth conducting.
Preferably, when the spool slides into first state position, the axial position of first isolation ring is located at described
Between air inlet and the gas outlet, the axial position of second isolation ring be located at the gas outlet and the inlet it
Between, the axial position of the third isolation ring is between the inlet and the liquid outlet；
When the spool slides into the second state position, the axial position of first isolation ring be located at the air inlet it
Under, the axial position of second isolation ring is between the air inlet and the gas outlet, the axis of the third isolation ring
To position between the gas outlet and the inlet.
Preferably, be provided on the position on the side wall of the spool on the third isolation ring for the valve
The inner wall abutting of body, the guide ring to play the guiding role to it in the intracorporal sliding of the valve.
Preferably, limiting slot is offered in the top end surface of the valve body, and in upper area on the side wall of the spool
Place is provided with for abutting with the slot bottom of the limiting slot, to limit it in the limit of the intracorporal maximum stroke movement of the valve
Ring.
Preferably, bonnet is installed, the bottom inside of the bonnet is connected with dead ring, and described at the top of the valve body
It is threadedly coupled between the inner wall of dead ring and the top exterior walls of the valve body (1).
Preferably, the top end surface of the bonnet is hollow, and is equipped in the internal cavities of the bonnet and presses for manpower
Pressure cap；The pressure cap is set in the top of the spool, and the bottom end face of the pressure cap and the bonnet is interior
The spring for springing back to initial position after being pressed down the spool is provided between the bottom surface of portion's cavity.
The present invention also provides a kind of medical endoscope, including mirror body and the aqueous vapor switching valve being set in the mirror body,
In, the aqueous vapor switching valve is specially aqueous vapor switching valve described in any of the above embodiments.
Aqueous vapor switching valve provided by the present invention mainly includes valve body, spool, air inlet, gas outlet, inlet and liquid out
Mouthful.Wherein, valve body is the main structure of aqueous vapor switching valve, and length dimension is obvious, and is integrally generally in the form of a column or axis
Shape, while there are internal cavities, circulation and transfer place as aqueous vapor medium.Spool is arranged in valve body, and can be in valve
It reciprocatingly slides in the internal cavities of body, glide direction is the length direction of valve body.Air inlet, gas outlet, inlet and liquid out
It mouthful is provided with along its length on the side wall of valve body, is respectively used to introduce required gas from the external world, by the gas of introducing
It imported into endoscope tip and is introduced to enter in human body chamber, by required liquid from the external world, the liquid of introducing is imported into interior peep
Mirror end is to enter in human body chamber.Importantly, the reciprocatingly sliding in body cavity with spool, so that aqueous vapor switching valve has
Switching is servo-actuated there are many work condition state and in various work condition states.Wherein, when spool slides into first state position, air inlet
Mouth is connected by body cavity with gas outlet, while inlet and liquid outlet keep ending；Aqueous vapor switching valve is in and supplies gas at this time
Operating condition, required gas are transported to endoscope head end after passing through air inlet, body cavity and gas outlet after introducing from the external world.Work as valve
When core slides into the second state position, inlet is connected by body cavity with liquid outlet, while air inlet and gas outlet are kept
Cut-off；Aqueous vapor switching valve is in infusion operating condition at this time, and required liquid passes through inlet, body cavity and goes out after introducing from the external world
Endoscope head end is transported to after liquid mouth.In this way, aqueous vapor switching valve provided by the present invention, by spool in the intracorporal reciprocal cunning of valve
It is dynamic, aqueous vapor switching valve can be made to be respectively at supply gas operating condition and infusion operating condition, endoscope tip independently is conveyed needs gas or
Liquid can effectively avoid gas-vapor mix, aqueous vapor leakage, aqueous vapor clogging, while simple to operate, and medical staff uses
When operating efficiency it is higher, compared with the prior art, the structure of aqueous vapor switching valve is simple, lower production costs.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 be in a kind of specific embodiment provided by the present invention aqueous vapor switching valve in the raw under structure show
It is intended to.
Fig. 2 is the structure that aqueous vapor switching valve is in work condition state of supplying gas in a kind of specific embodiment provided by the present invention
Schematic diagram.
Fig. 3 is the structure that aqueous vapor switching valve is in infusion work condition state in a kind of specific embodiment provided by the present invention
Schematic diagram.
Fig. 4 is the concrete structure schematic diagram of button assembly in a kind of specific embodiment provided by the present invention.
Wherein, in Fig. 1-Fig. 4:
Valve body -1, air inlet -2, gas outlet -3, inlet -4, liquid outlet -5, spool -6, bonnet -7, fastening
Ring -8, pressure cap -9, spring -10；
Limiting slot -101, the first isolation ring -601, the second isolation ring -602, third isolation ring -603, air intake duct -
604, exhaust duct -605, air guide port -606, airtight sealing plate -607, guide ring -608, the isolation of stop collar -609, the four
Ring -610.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of overall structure diagram of specific embodiment provided by the present invention.
In a kind of specific embodiment provided by the present invention, the aqueous vapor switching valve of medical endoscope mainly includes valve body
1, spool 6, air inlet 2, gas outlet 3, inlet 4 and liquid outlet 5.
Wherein, valve body 1 is the main structure of aqueous vapor switching valve, and length dimension is obvious, and whole generally in column
Shape or shaft-like, while there are internal cavities, circulation and transfer place as aqueous vapor medium.It is preferred in one kind about valve body 1
In embodiment, which specifically can be cylindrical, has the internal cavities opened up along axial direction.
Spool 6 is arranged in valve body 1, and can reciprocatingly slide in the internal cavities of valve body 1, and glide direction is valve body
1 length direction.In a kind of preferred embodiment about spool 6, which can be in the shape of a rod, and is plugged in valve body 1
In internal cavities, it can be moved back and forth along the length direction (or axial) of valve body 1, be as shown vertical elevating movement.
Air inlet 2, gas outlet 3, inlet 4 and liquid outlet 5 are provided with along its length on the side wall of valve body 1, respectively
For required gas being introduced into from the external world, the gas being introduced into being imported into endoscope tip to enter in human body chamber, will be required
Liquid from the external world is introduced into, the liquid being introduced into is imported into endoscope head end with entrance human body chamber in.
Importantly, the reciprocatingly sliding in 1 inner cavity of valve body with spool 6, so that aqueous vapor switching valve has various working
State is simultaneously servo-actuated switching in various work condition states.Wherein, when spool 6 slides into first state position, air inlet 2 passes through valve
1 inner cavity of body and gas outlet 3 are connected, while inlet 4 and liquid outlet 5 keep ending；Aqueous vapor switching valve is in operating condition of supplying gas at this time,
Required gas is transported to endoscope head end after passing through air inlet 2,1 inner cavity of valve body and gas outlet 3 after introducing from the external world.Work as spool
6 when sliding into the second state position, and inlet 4 is connected by 1 inner cavity of valve body and liquid outlet 5, while air inlet 2 and gas outlet 3
Keep cut-off；Aqueous vapor switching valve is in infusion operating condition at this time, and required liquid is after external world's introducing by inlet 4, valve body 1
Endoscope head end is transported to after chamber and liquid outlet 5.
In this way, aqueous vapor switching valve provided by the present embodiment can make aqueous vapor by the reciprocatingly sliding in valve body 1 of spool 6
Switching valve is respectively at supply gas operating condition and infusion operating condition, and the gas or liquid needed, Neng Gouyou are independently conveyed to endoscope tip
Effect avoids gas-vapor mix, aqueous vapor leakage, aqueous vapor clogging, while simple to operate, operating efficiency when medical staff uses
Higher, compared with the prior art, the structure of aqueous vapor switching valve is simple, lower production costs.
In a kind of preferred embodiment about air inlet 2, gas outlet 3, inlet 4 and liquid outlet 5, this can be
It is sequentially distributed, respectively corresponds axially different in the internal cavities of valve body 1 from bottom to up along its length on the side wall of valve body 1
Height and position.Meanwhile to keep structural focus to stablize, facilitate processing, air inlet 2, gas outlet 3, inlet 4 and liquid outlet 5 can
It is circumferentially interspersed on the side wall of valve body 1 as needed, since the internal cavities of valve body 1 are column, gas-liquid
Transmission is not influenced by radial distribution position.For example, as shown, air inlet 2 and inlet 4 can be provided with valve body 1 respectively
Left side side wall on, while gas outlet 3 and liquid outlet 5 are provided with respectively in the right sidewall of valve body 1.
Meanwhile to guarantee that air inlet 2, gas outlet 3, inlet 4 and liquid outlet 5 four can be in valves in its natural state
Isolation is kept on body 1, predetermined position of the present embodiment on spool 6 is arranged with several isolation rings, each isolation ring it is outer
Diameter is suitable with the internal diameter of cavity, and outer wall surface can be close to the inner wall surface of cavity.Wherein, in the bottom section of spool 6
It is arranged with the first isolation ring 601 at position, the second isolation ring 602 is arranged at the mid-area location of spool 6, in spool 6
Upper area position at be arranged with third isolation ring 603.First isolation ring 601 is mainly used for air inlet in its natural state
2 completely cut off with gas outlet 3, and the second isolation ring 602 is mainly used in its natural state completely cutting off gas outlet 3 and inlet 4, third every
It is mainly used in its natural state completely cutting off inlet 4 and liquid outlet 5 from ring 603.
Certainly, the sliding and change in location with spool 6 in valve body 1, the first isolation ring 601,602 and of the second isolation ring
Third isolation ring 603 and the relative position of air inlet 2, gas outlet 3, inlet 4 and liquid outlet 5 will change, and isolation is closed
System may also change accordingly.
Specifically, aqueous vapor switching valve is in work condition state of supplying gas at this time when spool 6 slides first state position.Wherein,
Between air inlet 2 and gas outlet 3, the axial position of the second isolation ring 602 is located at the axial position of first isolation ring 601
Between port 3 and inlet 4, and the axial position of third isolation ring 603 is located in the liquid inlet between 4 and liquid outlet 5.When spool 6
When sliding into the second state position, aqueous vapor switching valve is in infusion work condition state at this time.Wherein, the axial direction of the first isolation ring 601
Position is located under air inlet 2, the axial position of the second isolation ring 602 between air inlet 2 and gas outlet 3, and third every
Axial position from ring 603 is between gas outlet 3 and inlet 4.
Each work condition state of aqueous vapor switching valve is illustrated below.
It is both unaspirated at this time or be not infused when aqueous vapor switching valve is in nature work condition state.To prevent in natural operating condition
Under state, ambient atmos enter cavity bottom and cause upward thrust to spool 6, cause to be difficult to push sliding, the present embodiment
Air intake duct 604 has been opened up on the bottom end face of spool 6, while exhaust duct 605 has been opened up in the top end surface of spool 6, when
So, the inside of spool 6 is hollow, and air intake duct 604 is connected to the inner passage of spool 6 with exhaust duct 605.So set
It sets, even if ambient atmos are entered in valve body 1 by air inlet 2, can also pass sequentially through the inner passage of air intake duct 604, spool 6
It is discharged outside to again with exhaust duct 605.As for environmental liquids, due to the closing of the second isolation ring 602 and third isolation ring 603
Effect can also be limited in the space of very little even if environmental liquids are entered in valve body 1 by inlet 4, can not be in valve body
Circulation in 1, and be difficult to hinder proper motion of the spool 6 in valve body 1.
As shown in Fig. 2, Fig. 2 is that aqueous vapor switching valve is in operating condition of supplying gas in a kind of specific embodiment provided by the present invention
The structural schematic diagram of state.
When aqueous vapor switching valve, which is in, supplies gas work condition state, the first isolation ring 601, the second isolation ring 602 and third at this time
Isolation ring 603 and air inlet 2, gas outlet 3, the relative position of inlet 4 and liquid outlet 5 are identical as natural work condition state, and
1 internal cavities of valve body are successively divided into tetra- spaced cavities of a, b, c, d by each isolation ring from bottom to up.At this point, air inlet 2
In a cavity, gas outlet 3 is located in b cavity, and inlet 4 is located in c cavity, and liquid outlet 5 is located in d cavity.
Wherein, inlet 4 is closed in c cavity, and liquid outlet 5 is closed in d cavity, and access ends between the two,
Environmental liquids can not reach in liquid outlet 5 from inlet 4, and aqueous vapor switching valve at this time can not output liquid.Also, even if extraneous liquid
Body enters c cavity by inlet 4, can also be limited in c cavity, can not be diffused into remaining cavity, can effectively prevent
Gas-vapor mix, while can also prevent the endoceliac liquid of people from flowing back in valve body 1.
Meanwhile in order to guarantee that ambient atmos can be imported into gas outlet 3 by air inlet 2 and 1 inner cavity of valve body, this implementation
Example has opened up air guide port 606 on the side wall of spool 6, and airtight sealing plate 607 is covered on air guide port 606.Specifically, leading
Port 606 is provided in the region between the first isolation ring 601 and the second isolation ring 602, and is now placed in b cavity.And
Airtight sealing plate 607 is to be flexibly connected with the outer surface of spool 6, fold campaign can be carried out on spool 6, when in air guide port 606
When air pressure reaches a certain level, it can be washed open from inside by airtight sealing plate 607, so that air guide port 606 is connected to b cavity.In this way,
Ambient atmos can be reached in a cavity by air inlet 2, then be entered in the inner cavity of spool 6 by air intake duct 604 again, it
It is entered in b cavity by air guide port 606 again afterwards, finally by the output of gas outlet 3 to endoscope head end, completes operation of supplying gas.
Certainly, it is noted that since the top of spool 6 is also provided with exhaust duct 605, to guarantee in work condition state of supplying gas
Ambient atmos can smoothly reach gas outlet 3, therefore medical staff's finger or remaining object is also needed to press on the top of spool 6
On end, exhaust duct 605 is closed, so can just make to have in the inner cavity of spool 6 compared with atmospheric pressure, to wash airtight sealing plate 607 open.
As shown in figure 3, Fig. 3 is that aqueous vapor switching valve is in infusion operating condition in a kind of specific embodiment provided by the present invention
The structural schematic diagram of state.
When aqueous vapor switching valve be in infusion work condition state when, spool 6 moves down certain distance in valve body 1, at this time first every
It is opposite with air inlet 2, gas outlet 3, inlet 4 and liquid outlet 5 from ring 601, the second isolation ring 602 and third isolation ring 603
Position is different from natural work condition state, tooling of supplying gas state, and each isolation ring by 1 internal cavities of valve body from bottom to up successively
It is divided into tetra- spaced cavities of e, f, g, h.At this point, air inlet 2 is located in f cavity, gas outlet 3 is located in g cavity, inlet 4
It is respectively positioned in h cavity with liquid outlet 5, and keeps idle in e cavity, do not correspond to nozzle.
Wherein, air inlet 2 is closed in f cavity, and gas outlet 3 is closed in g cavity, between the two access medium,
Ambient atmos can not reach in gas outlet 3 from air inlet 2, and aqueous vapor switching valve at this time can not output gas.Also, even if extraneous gas
Body enters f cavity by air inlet 2, can also be limited in f cavity, can not be diffused into remaining cavity, can effectively prevent
Gas-vapor mix, while can also prevent the endoceliac gas backflow of people from returning in valve body 1.Simultaneously as ambient atmos are from air inlet 2
After entering f cavity, the impact force for the airtight sealing plate 607 on spool 6 be from outside to inside, under gas percussion,
Airtight sealing plate 607 is covered again on air guide port 606, is sealed against.Certainly, for convenience of environmental liquids flowing, generally pass through water
Gas cylinder contains current desired liquid, and the aqueous vapor bottle (not shown) is also connected to f cavity, to utilize ambient atmos
Pressure the liquid in aqueous vapor bottle is pushed out at inlet 4.
At this point, environmental liquids can be imported from inlet 4 and be entered in h cavity, since liquid outlet 5 and inlet 4 are same
In h cavity, therefore under hydraulic action, environmental liquids can pass through h cavity and reach in liquid outlet 5, and export extremely
Endoscope head end completes transfusion operation.
In addition, for convenience of sliding motion of the spool 6 in valve body 1, if the present embodiment is provided with also on the side wall of spool 6
Dry guide ring 608.Specifically, the guide ring 608 may be provided at the position on third isolation ring 603, outer diameter can be with
The internal diameter of valve body 1 is suitable, and outer surface is connected in the inner wall surface of valve body 1, when spool 6 slides in the inner cavity of valve body 1,
Guiding role is formed to spool 6 by the abutting between 1 inner wall surface of guide ring 608 and valve body, prevents spool 6 in sliding process
Middle generation is circumferentially shaken.
It further, is the leakproofness for improving 1 inner cavity of valve body, the present embodiment is located at the bottom of guide ring 608 also on spool 6
The 4th isolation ring 610 is additionally arranged at portion position.4th isolation ring 610 is mainly used for completely cutting off liquid outlet 5 and guide ring 608, prevents
Only liquid leaks into the external world from the gap between 1 inner wall of guide ring 608 and valve body.
It certainly, is the uniformity of the guiding role of raising guide ring 608, the present embodiment is also in the medium position of spool 6, i.e.,
Region between second isolation ring 602 and third isolation ring 603 is provided with guide ring 608.
Moreover, the present embodiment also offers limiting slot 101 in the top end surface of valve body 1, while in the side of spool 6
Stop collar 609 is provided on wall at upper area.Specifically, the diameter of the stop collar 609 is slightly larger than the internal cavities of valve body 1
Diameter, while be less than limiting slot 101 internal diameter.It, will be by this way, when spool 6 is slided in the internal cavities of valve body 1
Limit to stop collar 609 limits, i.e., when stop collar 609 abuts on the bottom surface of limiting slot 101 with the movement of spool 6
When, spool 6 will be unable to continue to move (diagram downlink) in the same direction, reach range.Certainly, within the range of spool 6,
Necessarily have already been through nature work condition state position, supply gas work condition state position and infusion work condition state position.
In addition, guaranteeing between valve body 1 and endoscopic procedure portion shell to further increase the leakproofness of 1 inner cavity of valve body
It is stably connected with, the present embodiment is also provided with button assembly at the top of valve body 1.
As shown in figure 4, Fig. 4 is the specific structure signal of button assembly in a kind of specific embodiment provided by the present invention
Figure.
Specifically, the button assembly mainly includes spool 6, bonnet 7, dead ring 8, pressure cap 9 and spring 10.Wherein, valve
The top of valve body 1 is arranged in cap 7, is shrouded, while dead ring 8 is arranged on the bottom inside wall of bonnet 7, and the two is generally logical
It crosses clamping groove and is clamped the cooperation realization clamping of boss.Meanwhile the top outer wall of the inner wall of dead ring 8 and valve body 1 passes through spiral shell
Line connection.In this way, valve body 1 can be fixedly installed to endoscopic procedure portion shell by the threaded connection between dead ring 8 and valve body 1
In body (not shown), wherein valve body 1 is in the inside of endoscope operation portion shell, and dead ring 8 is in endoscope operation portion shell
The outside of body.Also, it, can after unlocking dead ring 8 from valve body 1 by the clamping connection between bonnet 7 and dead ring 8
Entire button assembly is extracted from valve body 1, easy disassembly and maintenance.
Spool 6 is operated for convenience of medical staff, its is made to change sliding position, in the present embodiment, in the top end surface of bonnet 7
Sky has internal cavities, while being equipped with pressure cap 9 in the internal cavities of bonnet 7.The top of spool 6 is interior through bonnet 7
Portion's cavity is simultaneously connected with pressure cap 9, specifically, the internal cavities of pressure cap 9 can be connected to the top of spool 6 by screw thread etc..
Also, it is additionally provided with spring 10 between the bottom end face of pressure cap 9 and the bottom surface of the internal cavities of bonnet 7, works as medical staff
When pressing pressure cap 9, spool 6 is with moving down, and spring 10 is compressed therewith, to accumulate energy when elasticity.When medical staff pine
When opening pressure cap 9, spring 10 releases energy, to spring back, as spool 6 and pressure cap 9 are returned to original state position.
Certainly, specific location of the spool 6 in valve body 1 is grasped for convenience of medical staff, the accurate aqueous vapor switching valve that controls is worked as
Preceding locating work condition state, in the present embodiment, valve body 1 can be transparent material, so that medical staff be facilitated to judge spool 6 in valve body
Specific location in 1 inner cavity.
The present embodiment also provides a kind of medical endoscope, the main aqueous vapor switching valve for including mirror body and being arranged in mirror body,
Wherein, the main contents of the aqueous vapor switching valve are identical as above-mentioned related content, and details are not described herein again.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of aqueous vapor switching valve, which is characterized in that be opened in it including valve body (1) and along the length direction of the valve body (1)
Air inlet (2), gas outlet (3), inlet (4), liquid outlet (5) on side wall, and can be along the length direction of the valve body (1)
The spool (6) being slidingly arranged in it；
When the spool (6) slides into first state position, the air inlet (2) and the gas outlet (3) are connected, and it is described into
Liquid mouth (4) and the liquid outlet (5) are ended；
When the spool (6) slides into the second state position, the air inlet (2) and the gas outlet (3) are ended, and it is described into
Liquid mouth (4) and the liquid outlet (5) are connected.
2. aqueous vapor switching valve according to claim 1, which is characterized in that the air inlet (2), the gas outlet (3), institute
It states inlet (4) and is arranged successively from bottom to up along its length on the side wall of the valve body (1) with the liquid outlet (5), and
It is arranged on the spool (6) for completely cutting off the air inlet (2) and institute in the inner cavity of the valve body (1) in its natural state
State the first isolation ring (601) of gas outlet (3), the second isolation ring of the isolation gas outlet (3) and the inlet (4)
(602) and the third isolation ring (603) of the isolation inlet (4) and the liquid outlet (5).
3. aqueous vapor switching valve according to claim 2, which is characterized in that the inner hollow of the spool (6), and the valve
The air intake duct (604) being connected to inner passage is offered on the bottom end face of core (6), is opened in the top end surface of the spool (6)
It is logical with the gas that will be imported from the air inlet (2) in its natural state equipped with the exhaust duct (605) being connected to inner passage
It crosses the air intake duct (604) and the exhaust duct (605) is discharged outside to.
4. aqueous vapor switching valve according to claim 3, which is characterized in that in described first on the side wall of the spool (6)
The connects with the internal cavities with the valve body (1) are offered at position between isolation ring (601) and second isolation ring (602)
Air guide port (606), and foldable airtight sealing plate (607) is covered on the air guide port (606), in the exhaust duct
(605) gas imported from the air inlet (2) when being blocked can wash open the airtight sealing plate (607) and with the outlet
Mouth (3) conducting.
5. aqueous vapor switching valve according to claim 4, which is characterized in that the spool (6) slides into first state position
When, the axial position of first isolation ring (601) is between the air inlet (2) and the gas outlet (3), and described second
The axial position of isolation ring (602) is between the gas outlet (3) and the inlet (4), the third isolation ring (603)
Axial position between the inlet (4) and the liquid outlet (5)；
When the spool (6) slides into the second state position, the axial position of first isolation ring (601) is located at the air inlet
Under mouthful (2), the axial position of second isolation ring (602) between the air inlet (2) and the gas outlet (3),
The axial position of the third isolation ring (603) is between the gas outlet (3) and the inlet (4).
6. aqueous vapor switching valve according to claim 5, which is characterized in that in the third on the side wall of the spool (6)
Be provided on position on isolation ring (603) for being abutted with the inner wall of the valve body (1), with to it in the valve body (1)
The guide ring (608) that interior sliding play the guiding role.
7. aqueous vapor switching valve according to claim 1, which is characterized in that offered in the top end surface of the valve body (1)
Limiting slot (101), and be provided at upper area on the side wall of the spool (6) for the slot with the limiting slot (101)
Bottom abutting, the stop collar (609) to limit its maximum stroke movement in the valve body (1).
8. aqueous vapor switching valve according to claim 7, which is characterized in that be equipped with bonnet at the top of the valve body (1)
(7), the bottom inside of the bonnet (7) is connected with dead ring (8), and the inner wall of the dead ring (8) and the valve body (1)
It is threadedly coupled between top exterior walls.
9. aqueous vapor switching valve according to claim 8, which is characterized in that the top end surface of the bonnet (7) is hollow, and institute
State the pressure cap (9) being equipped in the internal cavities of bonnet (7) for manpower pressing；The pressure cap (9) is set in the spool
(6) top, and be arranged between the bottom surface of the internal cavities of the bottom end face of the pressure cap (9) and the bonnet (7) useful
The spring (10) of initial position is sprung back to after being pressed down the spool (6).
10. a kind of medical endoscope, including mirror body and the aqueous vapor switching valve being set in the mirror body, which is characterized in that described
Aqueous vapor switching valve is specially the described in any item aqueous vapor switching valves of claim 1-9.
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| CN201910832251.9A CN110522396B (en) | 2019-09-04 | 2019-09-04 | Medical endoscope and aqueous vapor diverter valve thereof |
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| CN201910832251.9A CN110522396B (en) | 2019-09-04 | 2019-09-04 | Medical endoscope and aqueous vapor diverter valve thereof |
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| CN110522396B CN110522396B (en) | 2021-11-16 |
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| CN110886872A (en) * | 2019-12-05 | 2020-03-17 | 重庆金山医疗技术研究院有限公司 | Water gas switching valve for endoscope and endoscope |
| CN112156259A (en) * | 2020-10-12 | 2021-01-01 | 江苏科凌医疗器械有限公司 | Conversion valve, air pump type automatic gastric lavage machine and gastric lavage method |
| CN112984153A (en) * | 2021-04-29 | 2021-06-18 | 成都康拓兴业科技有限责任公司 | Valve core type oxygen source distributor for airborne oxygen system |
| CN113318290A (en) * | 2021-06-30 | 2021-08-31 | 中国人民解放军陆军特色医学中心 | Clinical enema device convenient to it is clean |
| WO2023160303A1 (en) | 2022-02-24 | 2023-08-31 | 杭州莱恩瑟特医疗技术有限公司 | Gas-liquid switching valve and endoscope |
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| CN112156259A (en) * | 2020-10-12 | 2021-01-01 | 江苏科凌医疗器械有限公司 | Conversion valve, air pump type automatic gastric lavage machine and gastric lavage method |
| CN112984153A (en) * | 2021-04-29 | 2021-06-18 | 成都康拓兴业科技有限责任公司 | Valve core type oxygen source distributor for airborne oxygen system |
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