CN114288496A - Device for preventing hospital respiratory infection of children patients - Google Patents

Abstract

The invention discloses a device for preventing hospital respiratory infection of children patients, which comprises an air suction cover, wherein an air suction pipe is communicated with the air suction cover, and one end of the air suction pipe, which is far away from the air suction cover, is connected with a purification device; the purifying device comprises an installation box, a transverse pipe is installed on the inner wall of the installation box, one end of the transverse pipe is communicated with an air suction pipe, a first vertical pipe is communicated with the outer wall of the transverse pipe, a second air pipe is communicated with the outer wall of the first vertical pipe, the outer wall of the transverse pipe is further communicated with a first air pipe, and one end, far away from the transverse pipe, of the first air pipe and the second air pipe is jointly connected with an air inlet pipe. According to the invention, through switching of the first air pipe and the second air pipe, the infant can carry out atomization treatment without taking off the air suction cover, so that droplets in air breathed by the infant during treatment can be avoided, meanwhile, through switching during each treatment, the effect of cleaning water drops on the surface of the melt-blown cloth can be achieved, and the prevention effect is further achieved.

Description

Device for preventing hospital respiratory infection of children patients

Technical Field

The invention relates to the technical field of medical instruments, in particular to a device for preventing hospital respiratory infection of children patients.

Background

Spitting anywhere can bring about serious hygiene problems. Spitting anywhere is an unsanitary activity, as spray is the main route of transmission of many pathogens. For people with respiratory diseases, other complications are more easily caused by airborne droplets and germs, and even the life safety of the infected diseases is endangered. Especially in sensitive areas such as hospitals. In hospital, the immunity is low, so the infant is the most susceptible to infection, and therefore the infant needs to wear protective devices such as a mask all the time to achieve the purpose of preventing respiratory infection.

However, although the prevention of respiratory infection can be achieved by wearing protective devices such as masks, when a child patient needs medication, the child patient needs to take off the protective devices such as masks and then perform the medication, and the child patient breathes air bubbles in the air, thereby losing the prevention and protection effects.

Disclosure of Invention

The invention aims to provide a device for preventing hospital respiratory infection of a child patient, so that the child patient can carry out atomization treatment without taking off an air suction cover, and droplets in air breathed by the child patient during treatment can be avoided, thereby having the effect of preventing the child patient while treating the child patient and solving the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the device for preventing hospital respiratory infection of children comprises an air suction cover, wherein an air suction pipe is communicated with the air suction cover, and one end, far away from the air suction cover, of the air suction pipe is connected with a purifying device.

Purifier includes the install bin, violently the pipe is installed to the inner wall of install bin, the one end and the breathing pipe intercommunication of violently managing, the outer wall intercommunication of violently managing has first standpipe, the outer wall intercommunication of first standpipe has the second trachea, the outer wall of violently managing still communicates has first trachea, the one end that violently the pipe was kept away from to first trachea and second trachea is connected with the intake pipe jointly, filtration membrane is installed to the inner wall of intake pipe, the atomizer that communicates with the second trachea is installed to the inner wall of install bin, still include the switching mechanism that can make second trachea or first trachea and breathing pipe intercommunication.

Preferably, the switching mechanism includes a second moving rod slidably mounted on an inner wall of the first vertical tube, the outer wall of the horizontal tube is communicated with a second vertical tube through which the second moving rod can penetrate, the second moving rod is close to an outer wall of the second moving rod and provided with a connecting groove, the inner wall of the horizontal tube, which is far away from the air suction tube, is slidably mounted with a first moving rod, a connecting channel is provided inside the first moving rod, the switching mechanism further includes a transmission assembly through which one end of the second moving rod, which is close to the first moving rod, can be close to or away from each other, when the second moving rod and the first moving rod are close to each other, the connecting groove can communicate the second air tube with the horizontal tube, and when the second moving rod and the first moving rod are far away from each other, the connecting channel can communicate the first air tube with the horizontal tube.

Preferably, the one end that first carriage release lever is close to the second carriage release lever is fixed with the melt-blown fabric that is used for carrying out secondary filter to the air, the outer wall that the second carriage release lever is close to first carriage release lever is seted up slottedly, and the inslot installs the cotton that absorbs water, works as when second carriage release lever and first carriage release lever are close to each other, the cotton that absorbs water can contact with the melt-blown fabric, the outer wall that the second standpipe is close to first carriage release lever is fixed with the drying cabinet, the groove with the drying cabinet intercommunication is seted up to the outer wall of second standpipe, the inner wall slidable mounting of second standpipe has the slide, be connected with the spring between the outer wall of slide and the inner wall that the second carriage release lever was kept away from to the second standpipe, when slide and second carriage release lever do not contact, the slide separates drying cabinet and violently pipe, the ultraviolet irradiation lamp is installed to the inner wall of drying cabinet.

Preferably, a groove is formed in the second movable rod between the connecting groove and the absorbent cotton, and an electric heating piece is installed in the groove.

Preferably, the inner wall of install bin rotates through the pivot and installs first gear and second gear, the tooth's socket has all been seted up to the outer wall of second carriage release lever and first carriage release lever, the tooth's socket meshing of first gear and second carriage release lever, the tooth's socket meshing of second gear and first carriage release lever, the equal coaxial arrangement of first gear and second gear has the drive wheel, two connect through belt transmission between the drive wheel, work as can drive second carriage release lever and first carriage release lever and be close to each other or keep away from when first gear and second gear rotate in step, the axle center of first gear is fixed with the bull stick of wearing out the install bin outer wall, the one end that the install bin outer wall was worn out to the bull stick is fixed with the spanner.

Preferably, the inner wall of install bin is fixed with the cover and establishes at the peripheral solid fixed ring of second trachea, the outer wall of second carriage release lever is fixed with the cover and establishes at the peripheral shift ring of second trachea, be provided with between shift ring and the solid fixed ring and be used for carrying out extruded extrusion subassembly to the second trachea, work as when shift ring and solid fixed ring are close to each other, extrusion subassembly can extrude the second trachea, makes the tracheal air current flux of second reduce, the second trachea adopts the elasticity pipe material.

Preferably, be fixed with two at least flexure strips between shift ring and the solid fixed ring, the flexure strip sets up to the arc and all adopts the elasticity material, works as when shift ring and solid fixed ring are close to each other, two the flexure strip can bending deformation and extrusion second trachea.

Preferably, still including setting up two splint between shift ring and solid fixed ring, the outer wall of both sides all articulates there is first connecting rod, two about the splint the one end that splint were kept away from to first connecting rod articulates respectively at shift ring and solid fixed ring's outer wall, works as when shift ring and solid fixed ring are close to each other, first connecting rod can make two splint be close to each other and extrude the second trachea, two all rotate between the lateral wall of splint both sides and install two articulated second connecting rods each other.

Preferably, an electrostatic adsorption plate for adsorbing dust is installed on the inner wall of the air inlet pipe.

Compared with the prior art, the invention has the following beneficial effects:

first, the invention can complete the switching of the first air pipe and the second air pipe by driving the close ends of the second movable rod and the first movable rod to be close to or far away from each other, the ventilation is carried out through the first air pipe under the normal state, and the ventilation is switched to the second air pipe during the atomization treatment, so that the infant patient can carry out the atomization treatment without taking off the air suction cover, the droplet in the air breathed by the infant patient during the treatment can be avoided, and the prevention effect is achieved while the infant patient is treated.

According to the invention, one end of the second moving rod close to one end of the first moving rod is close to or far away from the first moving rod, the first air pipe is switched to the second air pipe, the absorbent cotton on the second moving rod is contacted with the melt-blown cloth and extrudes the absorbent cotton to a certain degree, water drops on the melt-blown cloth are adsorbed along with movement, friction is helpful for drying the melt-blown cloth, and bacteria are prevented from breeding due to residual moisture on the melt-blown cloth.

Third, the invention can drive the extrusion component to extrude the second air pipe when switching to the second air pipe for atomization treatment, so that the infant patient can inhale the atomized medicine more deeply and more, and a certain treatment effect can be improved.

Drawings

FIG. 1 is a front isometric view of the present invention;

FIG. 2 is a schematic structural view in elevation and section;

FIG. 3 is a schematic perspective view of the FIG. 2 of the present invention;

FIG. 4 is an enlarged perspective view of a second embodiment of the compression assembly of the present invention.

In the figure: 1. installing a box; 2. an air intake duct; 3. an air intake cover; 4. an atomizer; 5. an air inlet pipe; 6. a wrench; 7. a drying oven; 8. a transverse tube; 9. a first vertical tube; 10. a second standpipe; 11. a first movable bar; 12. a first air pipe; 13. absorbent cotton; 14. an electric heating sheet; 15. a first gear; 16. a second movable bar; 17. a filtration membrane; 18. a moving ring; 19. an elastic sheet; 20. a fixing ring; 21. a second air pipe; 22. connecting grooves; 23. melt-spraying cloth; 24. a connecting channel; 25. a second gear; 26. a driving wheel; 27. a slide plate; 28. a spring; 29. an ultraviolet radiation lamp; 30. an electrostatic adsorption plate; 31. a rotating rod; 32. a first link; 33. a splint; 34. a second link.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: the device for preventing the hospital respiratory infection of the children comprises an air suction cover 3, an air suction pipe 2 is communicated with the air suction cover 3, and one end, far away from the air suction cover 3, of the air suction pipe 2 is connected with a purifying device.

Purifier includes install bin 1, violently pipe 8 is installed to the inner wall of install bin 1, the one end and the 2 intercommunications of breathing pipe of violently pipe 8, the outer wall intercommunication of violently pipe 8 has first standpipe 9, the outer wall intercommunication of first standpipe 9 has second trachea 21, the outer wall of violently pipe 8 still communicates first trachea 12, the one end of violently pipe 8 is kept away from to first trachea 12 and second trachea 21 is connected with intake pipe 5 jointly, filtration membrane 17 is installed to the inner wall of intake pipe 5, atomizer 4 with second trachea 21 intercommunication is installed to the inner wall of install bin 1, still including the switching mechanism that can make second trachea 21 or first trachea 12 and breathing pipe 2 intercommunication.

Will inhale 3 covers of cover at infant's oronasal department, can wear through modes such as elastic cord or magic subsides, under the normal use, switching mechanism makes first trachea 12 and 2 intercommunications of breathing pipe, the infant is direct through normal autonomic breathing, can inhale and exhale through breathing pipe 2, during breathing, the air can pass through intake pipe 5 and get into, can filter the air earlier through filtration membrane 17 simultaneously, prevent to inhale the droplet in the air, then the air after the filtration can inhale through first trachea 12 violently manage 8 in, then inhale through breathing pipe 2 again.

Then when needs carry out medication, atomize the medicine through atomizer 4 to let in second trachea 21, make second trachea 21 and breathing pipe 2 intercommunication through switching mechanism simultaneously, can inhale the medicine after the atomizing with the breathing of infant at this moment and treat, the infant need not take inhalation mask 3 and can carry out the aerosol therapy like this, can avoid the patient to breathe the droplet in the air when the treatment, thereby still play the effect of prevention when treating the infant.

Further, the switching mechanism includes a second moving rod 16 slidably mounted on an inner wall of the first vertical tube 9, an outer wall of the horizontal tube 8 is connected to the second vertical tube 10 through which the second moving rod 16 penetrates, an outer wall of the second moving rod 16 close to the second air tube 21 is provided with a connecting groove 22, an inner wall of the horizontal tube 8 far away from the air suction tube 2 is slidably mounted to the first moving rod 11, a connecting passage 24 is provided inside the first moving rod 11, the switching mechanism further includes a transmission assembly capable of enabling one end of the second moving rod 16 close to the first moving rod 11 to be close to or away from each other, when the second moving rod 16 and the first moving rod 11 are close to each other, the connecting groove 22 enables the second air tube 21 and the horizontal tube 8 to be connected, and when the second moving rod 16 and the first moving rod 11 are far away from each other, the connecting passage 24 enables the first air tube 12 and the horizontal tube 8 to be connected.

As shown in fig. 2 and 3, in the normal state, as the infant breathes, air enters from the air inlet pipe 5, the first air pipe 12 and the connecting passage 24 in sequence, and then normal spontaneous breathing is performed through the transverse pipe 8 and the air suction pipe 2.

When needs switch, make the one end that second carriage release lever 16 and first carriage release lever 11 are close to each other through drive assembly, second carriage release lever 16 can remove and insert in second standpipe 10 this moment, will violently manage 8 and block with first trachea 12, spread groove 22 can make second trachea 21 and violently manage 8 intercommunication, connecting channel 24 of seting up in the first carriage release lever 11 simultaneously can stagger with first trachea 12, make it seal, accomplish the switching, the infant can inhale the medicine after the atomizing along with breathing this moment, carry out the aerosol treatment.

Further, a meltblown 23 for secondary filtration of air is fixed at one end of the first moving rod 11 close to the second moving rod 16, a groove is formed in an outer wall of the second moving rod 16 close to the first moving rod 11, absorbent cotton 13 is installed in the groove, when the second moving rod 16 and the first moving rod 11 are close to each other, the absorbent cotton 13 can contact with the meltblown 23, a drying box 7 is fixed on an outer wall of the second vertical tube 10 close to the first moving rod 11, a groove communicated with the drying box 7 is formed in an outer wall of the second vertical tube 10, a sliding plate 27 is installed on an inner wall of the second vertical tube 10 in a sliding mode, a spring 28 is connected between the outer wall of the sliding plate 27 and the inner wall of the second vertical tube 10 far away from the second moving rod 16, when the sliding plate 27 is not in contact with the second moving rod 16, the sliding plate 27 separates the drying box 7 from the horizontal tube 8, and an ultraviolet lamp 29 is installed on the inner wall of the drying box 7.

When the infant breathes through first trachea 12, the air can carry out the secondary filter through melt-blown cloth 23, can further increase the effect of protection, because vapor in the exhalation air can be attached to melt-blown cloth 23, so along with the breathing of infant, this one side that melt-blown cloth 23 is close to breathing pipe 2 can condense out the drop, if not clear up the drop on melt-blown cloth 23, can reduce the guard action of melt-blown cloth 23, and still probably breed other germ along with the increase of live time, consequently need the drop to clear up.

When the first moving rod 11 and the second moving rod 16 move close to each other, so that the first air pipe 12 is switched to the second air pipe 21, the absorbent cotton 13 on the second moving rod 16 can be in contact with the meltblown 23, the absorbent cotton 13 is extruded to a certain degree, water drops on the meltblown 23 can be absorbed along with the movement, the friction can help to dry the meltblown 23, after the switching is completed, the second moving rod 16 can push against the sliding plate 27 to move, the spring 28 is in a compressed state, the absorbent cotton 13 moves to the drying box 7 at the moment, the absorbent cotton 13 can be dried, meanwhile, the absorbent cotton 13 can be disinfected through the ultraviolet radiation lamp 29, and bacteria residue and breeding are prevented.

After the treatment, when first movable rod 11 and second movable rod 16 kept away from each other, can switch second trachea 21 to first trachea 12, meanwhile, cotton 13 that absorbs water after the dry disinfection can rub meltblown 23 once more, prevents to remain moisture on meltblown 23, through the switching during treatment at every turn like this, can reach the clearance effect to meltblown 23 surface drop of water, has further played the effect of prevention.

Furthermore, a groove is formed in the second moving rod 16 between the connecting groove 22 and the absorbent cotton 13, and an electric heating piece 14 is installed in the groove.

Can heat through electric heat piece 14, can make the air and the atomizing medicine through second trachea 21 play certain heat preservation heating effect like this, because atomizing medicine can make the air turn cold, if the infant directly inhales, probably cause certain uncomfortable sense, heating through electric heat piece 14, can make air and atomizing medicine promote some temperatures when passing through spread groove 22, can be more comfortable when making the infant inhale, certain degree is favorable to the absorption of medicine, second carriage release lever 16 after the concurrent heating still is favorable to the drying of cotton 13 that absorbs water, improve its drying rate, make cotton 13 that absorbs water can be in dry degree, prevent bacterial growing.

Further, the inner wall of the installation box 1 is rotatably provided with a first gear 15 and a second gear 25 through a rotating shaft, tooth grooves are formed in the outer walls of the second moving rod 16 and the first moving rod 11, the first gear 15 is meshed with the tooth grooves of the second moving rod 16, the second gear 25 is meshed with the tooth grooves of the first moving rod 11, driving wheels 26 are coaxially arranged on the first gear 15 and the second gear 25, the two driving wheels 26 are connected through belt transmission, when the first gear 15 and the second gear 25 rotate synchronously, the second moving rod 16 and the first moving rod 11 can be driven to be close to or far away from each other, a rotating rod 31 penetrating through the outer wall of the installation box 1 is fixed on the axis of the first gear 15, and a wrench 6 is fixed at one end of the rotating rod 31 penetrating through the outer wall of the installation box 1.

The rotating rod 31 is driven to rotate by rotating the wrench 6, and then the first gear 15 is driven to rotate, under the driving action of the driving wheel 26 and the belt, the second gear 25 is driven to rotate synchronously, and at the moment, under the meshing action with tooth grooves on the first moving rod 11 and the second moving rod 16, the first moving rod 11 and the second moving rod 16 are driven to approach each other or move away from each other.

The damping can be arranged at the rotating position of the rotating rod 31 and the mounting box 1, so that the phenomenon that the rotating rod 31 rotates by mistake due to the fact that the spanner 6 is touched by mistake can be prevented, and the phenomenon that the infant patient is interrupted due to the fact that the infant patient touches by mistake during atomization treatment can be prevented.

Further, the inner wall of the installation box 1 is fixed with a fixing ring 20 which is sleeved on the periphery of the second air pipe 21, the outer wall of the second moving rod 16 is fixed with a moving ring 18 which is sleeved on the periphery of the second air pipe 21, an extrusion assembly which is used for extruding the second air pipe 21 is arranged between the moving ring 18 and the fixing ring 20, when the moving ring 18 and the fixing ring 20 are close to each other, the extrusion assembly extrudes the second air pipe 21, the air flow of the second air pipe 21 is reduced, and the second air pipe 21 is made of an elastic pipe material.

When second carriage release lever 16 and first carriage release lever 11 are close to each other, when switching over into second trachea 21, second carriage release lever 16 can drive shift ring 18 and be close to solid fixed ring 20, can extrude second trachea 21 through the extrusion subassembly this moment, make the air flux of second trachea 21 reduce, the infant can become to need hard to breathe in by the normal spontaneous respiration before like this and go, can be favorable to the inhalation to the atomizing medicine on the one hand like this, make the atomizing medicine can inhale darker and the volume is also more, can improve certain treatment, on the other hand, through hard breathing in and exhaling, can also temper the cardiopulmonary function of infant, increase vital capacity, thereby be favorable to the treatment of the state of an illness.

Further, at least two elastic pieces 19 are fixed between the moving ring 18 and the fixing ring 20, the elastic pieces 19 are arc-shaped and made of elastic materials, and when the moving ring 18 and the fixing ring 20 are close to each other, the two elastic pieces 19 can be bent and deformed and extrude the second air pipe 21.

In the first embodiment of the pressing assembly, when the moving ring 18 and the fixed ring 20 approach each other, the two elastic pieces 19 will bend and deform and press the second air pipe 21, so as to reduce the air flow quantity at the pressed position of the second air pipe 21, then when the second moving rod 16 and the first moving rod 11 are far away from each other, the moving ring 18 will also be far away from the fixed ring 20, at this time, the elastic pieces 19 will be elongated, and at the same time, the pressing action on the second air pipe 21 is cancelled, and then, because the second air pipe 21 is made of an elastic pipe material, the second air pipe 21 will automatically recover.

Further, still including setting up two splint 33 between shift ring 18 and solid fixed ring 20, the outer wall of both sides all articulates in splint 33 about, and the one end that splint 33 was kept away from to two first links 32 articulates respectively in the outer wall of shift ring 18 and solid fixed ring 20, and when shift ring 18 and solid fixed ring 20 were close to each other, first link 32 can make two splint 33 be close to each other and extrude second trachea 21, all installs two second connecting rods 34 of mutual articulated between the lateral wall of two splint 33 both sides.

In the second embodiment of the pressing assembly, when the moving ring 18 and the fixing ring 20 are close to each other, the moving ring 18 can make the two clamping plates 33 close to each other through the first connecting rod 32 and press the second air pipe 21, and the second connecting rod 34 can be bent, then when the moving ring 18 is far from the fixing ring 20, the two clamping plates 33 can also be far from each other and contact with the second air pipe 21 to press the second air pipe 21, and the second connecting rod 34 can be straightened, so that the second air pipe 21 can be automatically restored through the elastic pipe material, however, when the service life is prolonged, the elastic restoration degree of the second air pipe 21 can be reduced, and at this time, the second air pipe 21 can be clamped through the straightening of the second connecting rod 34, so that the restoration of the second air pipe 21 is promoted, and the service life of the second air pipe 21 is prolonged.

Further, the inner wall of the air inlet pipe 5 is provided with the electrostatic adsorption plate 30 for adsorbing dust, and fine dust in the air can be adsorbed through the electrostatic adsorption plate 30, so that the air filtering and purifying effect is further improved.

The working principle is as follows: during this device of infection is breathed in prevention infant hospital uses, cover 3 covers the oronasal department at the infant of breathing in, can wear through modes such as elasticity rope or magic subsides, under the normal use, first trachea 12 and breathing pipe 2 intercommunication, the infant is direct through normal autonomic breathing, can breathe in and exhale through breathing pipe 2, during breathing, the air can pass through intake pipe 5 entering, simultaneously can filter the air earlier through filtration membrane 17, prevent to inhale the droplet in the air, then the air after the filtration can be through first trachea 12 and connecting channel 24, then through the secondary filtration of melt-spray cloth 23, inhale in violently managing 8, then inhale through breathing pipe 2 again, can carry out a purified effect to the air like this, thereby can prevent that the infant from breathing the droplet in the air.

Then when carrying out the aerosol treatment, make the one end that second carriage release lever 16 and first carriage release lever 11 are close to each other through drive assembly, second carriage release lever 16 can remove and insert in second standpipe 10 this moment, will violently manage 8 and block with first trachea 12, spread groove 22 can make second trachea 21 and violently manage 8 intercommunication, connecting channel 24 of seting up in the first carriage release lever 11 simultaneously can stagger with first trachea 12, make it seal, accomplish the switching, the infant can inhale the medicine after the atomizing along with breathing this moment, carry out the aerosol treatment.

The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. Device of prevention infant hospital respiratory infection, including breathing in cover (3), its characterized in that: the air suction cover (3) is communicated with an air suction pipe (2), and one end of the air suction pipe (2) far away from the air suction cover (3) is connected with a purification device;

purifier includes install bin (1), violently pipe (8) is installed to the inner wall of install bin (1), the one end and breathing pipe (2) intercommunication of violently pipe (8), the outer wall intercommunication of violently pipe (8) has first standpipe (9), the outer wall intercommunication of first standpipe (9) has second trachea (21), the outer wall of violently pipe (8) still communicates first trachea (12), the one end of violently pipe (8) is kept away from in first trachea (12) and second trachea (21) is connected with intake pipe (5) jointly, filtration membrane (17) are installed to the inner wall of intake pipe (5), atomizer (4) with second trachea (21) intercommunication are installed to the inner wall of install bin (1), still including the switching mechanism that can make second trachea (21) or first trachea (12) and breathing pipe (2) intercommunication.

2. The device of claim 1, wherein the device is for preventing nosocomial respiratory infections in children patients, and comprises: the switching mechanism comprises a second moving rod (16) which is slidably arranged on the inner wall of a first vertical pipe (9), the outer wall of a transverse pipe (8) is communicated with a second vertical pipe (10) through which the second moving rod (16) can penetrate, the outer wall of the second moving rod (16) close to a second air pipe (21) is provided with a connecting groove (22), the inner wall of the transverse pipe (8) far away from the air suction pipe (2) is slidably arranged with a first moving rod (11), the inside of the first moving rod (11) is provided with a connecting channel (24), the switching mechanism also comprises a transmission component which can enable one end of the second moving rod (16) close to one end of the first moving rod (11) to be close to or far away from one another, when the second moving rod (16) and the first moving rod (11) are close to one another, the connecting groove (22) can enable the second air pipe (21) to be communicated with the transverse pipe (8), and when the second moving rod (16) and the first moving rod (11) are far away from one another, the connecting channel (24) connects the first air pipe (12) and the transverse pipe (8).

3. The device of claim 2, wherein the device is adapted to prevent nosocomial respiratory infections in children patients: one end of the first moving rod (11) close to the second moving rod (16) is fixed with melt-blown cloth (23) for filtering air for the second time, the outer wall of the second moving rod (16) close to the first moving rod (11) is provided with a groove, water-absorbing cotton (13) is arranged in the groove, when the second moving rod (16) and the first moving rod (11) are close to each other, the water-absorbing cotton (13) can be contacted with the melt-blown cloth (23), the outer wall of the second vertical tube (10) close to the first moving rod (11) is fixed with a drying box (7), the outer wall of the second vertical tube (10) is provided with a groove communicated with the drying box (7), the inner wall of the second vertical tube (10) is slidably provided with a sliding plate (27), a spring (28) is connected between the outer wall of the sliding plate (27) and the inner wall of the second vertical tube (10) far away from the second moving rod (16), and when the sliding plate (27) is not contacted with the second moving rod (16), the drying box (7) is separated from the transverse pipe (8) by the sliding plate (27), and an ultraviolet radiation lamp (29) is installed on the inner wall of the drying box (7).

4. The device of claim 3, wherein the device is for preventing nosocomial respiratory infections in children patients, and comprises: a groove is formed in the second moving rod (16) between the connecting groove (22) and the water absorption cotton (13), and an electric heating piece (14) is installed in the groove.

5. The device of claim 2, wherein the device is adapted to prevent nosocomial respiratory infections in children patients: the inner wall of the mounting box (1) is rotatably provided with a first gear (15) and a second gear (25) through a rotating shaft, tooth sockets are arranged on the outer walls of the second moving rod (16) and the first moving rod (11), the first gear (15) is meshed with a tooth groove of the second moving rod (16), the second gear (25) is meshed with a tooth groove of the first moving rod (11), the first gear (15) and the second gear (25) are coaxially provided with driving wheels (26), the two driving wheels (26) are in transmission connection through a belt, when the first gear (15) and the second gear (25) rotate synchronously, the second moving rod (16) and the first moving rod (11) are driven to move close to or away from each other, a rotating rod (31) which penetrates out of the outer wall of the installation box (1) is fixed at the axis of the first gear (15), and a spanner (6) is fixed at one end of the rotating rod (31) penetrating out of the outer wall of the installation box (1).

6. The device for preventing nosocomial respiratory infections in children patients according to any one of claims 2 to 5, wherein: the inner wall of install bin (1) is fixed with to establish at second trachea (21) outlying solid fixed ring (20), the outer wall of second carriage release lever (16) is fixed with to establish at second trachea (21) outlying shift ring (18), be provided with between shift ring (18) and solid fixed ring (20) and be used for carrying out extruded extrusion subassembly to second trachea (21), work as when shift ring (18) and solid fixed ring (20) are close to each other, extrusion subassembly can extrude second trachea (21), makes the air current flux of second trachea (21) reduce, second trachea (21) adopt the elastic tube material.

7. The device of claim 6, wherein the device is adapted to prevent nosocomial respiratory infections in children patients: remove and be fixed with two at least flexure strips (19) between ring (18) and solid fixed ring (20), flexure strip (19) set up to the arc and all adopt elastic material, work as when removal ring (18) and solid fixed ring (20) are close to each other, two flexure strip (19) can bending deformation and extrusion second trachea (21).

8. The device of claim 6, wherein the device is adapted to prevent nosocomial respiratory infections in children patients: still including setting up two splint (33) between shift ring (18) and solid fixed ring (20), the outer wall of both sides all articulates there is first connecting rod (32), two about splint (33) the one end that splint (33) were kept away from in first connecting rod (32) articulates the outer wall at shift ring (18) and solid fixed ring (20) respectively, works as when shift ring (18) and solid fixed ring (20) are close to each other, first connecting rod (32) can make two splint (33) be close to each other and extrude second trachea (21), two all rotate between the lateral wall of splint (33) both sides and install two mutual articulated second connecting rod (34).

9. The device for preventing nosocomial respiratory infections in children patients according to any one of claims 1 to 5, wherein: and an electrostatic adsorption plate (30) for adsorbing dust is arranged on the inner wall of the air inlet pipe (5).

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