CN112402750B

CN112402750B - Atomizing inhalation device for pediatrics

Info

Publication number: CN112402750B
Application number: CN202011319881.5A
Authority: CN
Inventors: 郝洪雷; 于蛟; 张爱玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2022-10-11
Anticipated expiration: 2040-11-23
Also published as: CN112402750A

Abstract

The invention discloses an aerosol inhalation device for pediatrics, which comprises an atomizer, an oxygen delivery pipe and an aerosol cup which are sequentially connected, wherein the aerosol cup is connected with the oxygen delivery pipe through a breath following device, the breath following device comprises a switching pipe, a gas valve assembly and a propelling assembly, the oxygen delivery pipe is in butt joint with the aerosol cup through the switching pipe, oxygen flow entering the switching pipe is cut off into oxygen clusters moving towards the aerosol cup in one switching period of the gas valve assembly, and the propelling assembly is used for propelling the oxygen clusters so that the oxygen clusters form stable high-speed oxygen flow when passing through the aerosol cup. Connect oxygen therapy pipe and atomizing cup through the switching pipe, the atomizer loops through oxygen therapy pipe and switching pipe and supplies oxygen to atomizing cup to adapt to patient's breathing rhythm and to atomizing cup intermittent type and stable supply oxygen through the cooperation of the pneumatic valve subassembly in the switching pipe and the subassembly of pushing, thereby reach the purpose that improves patient's atomizing treatment travelling comfort and avoid the liquid medicine extravagant.

Description

Atomizing inhalation device for pediatrics

Technical Field

The invention relates to the technical field of medical instruments, in particular to an aerosol inhalation device for pediatrics.

Background

The atomization inhalation method is an important and effective treatment method in the treatment of respiratory system diseases, and the method utilizes the principle of gas jet flow to change a medicinal solution into fine atomized particles which are suspended in gas through an atomizer and other atomization devices and are inhaled into respiratory tracts and lungs along with the natural respiration of a patient, thereby achieving the purposes of humidifying the respiratory tracts, diminishing inflammation, relieving cough and reducing sputum or performing medicinal treatment.

At present, an atomizer used in a medical system is generally a compression atomizer, that is, an oxygen flow generated by the compression atomizer is ejected sequentially through an oxygen delivery tube and an atomizing cup, a liquid medicine for atomization inhalation therapy is contained in the atomizing cup, and the atomizing cup has a structure similar to a venturi tube, so that the liquid medicine in the atomizing cup is gradually atomized while the high-speed air flow is ejected from the atomizing cup. Compared with an ultrasonic atomizer, the compression atomizer has the advantages of stable performance, no need of cleaning an air conveying channel and capability of simultaneously supplying a plurality of oxygen flows to meet the requirement of carrying out atomization inhalation treatment on a plurality of patients at the same time.

However, the existing compressed nebulizers generally adopt continuous spraying, and when a patient exhales, the sprayed mist is easy to leak out, so that the liquid medicine is wasted, and the hidden trouble of respiratory spasm of the patient is caused due to the conflict with the breathing of the patient.

Disclosure of Invention

The invention aims to provide an aerosol inhalation device for pediatrics, which solves the technical problem that in the prior art, a patient feels uncomfortable during treatment due to the fact that the aerosol inhalation mode of continuous spraying conflicts with the breathing of the patient.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

an atomization inhalation device for pediatrics comprises an atomizer, an oxygen tube and an atomization cup which are sequentially connected, wherein the atomization cup is connected with the oxygen tube through a breathing following device which is used for adapting to the breathing rhythm of a patient to carry out intermittent atomization;

the breathing following device comprises a switching tube, an air valve assembly and a propelling assembly, wherein the air valve assembly and the propelling assembly are arranged in the switching tube, the oxygen delivery tube is connected with the atomizing cup through the switching tube in a butt joint mode, oxygen flow entering the switching tube is intercepted into an oxygen mass moving towards the atomizing cup in one switching period of the air valve assembly, and the propelling assembly is used for propelling the oxygen mass so that the oxygen mass passes through the atomizing cup to form stable high-speed oxygen flow.

As a preferred scheme of the invention, the air valve assembly comprises a valve ring, an air hole for oxygen to pass through is formed in the valve ring in a penetrating manner, and a valve core part for controlling the air hole to open and close is slidably mounted on the valve ring;

the propulsion assembly comprises a reset portion used for driving the valve ring to move towards the direction of the input end of the adapter tube, the valve ring is slidably mounted in the reset portion, the valve core portion forms the oxygen cluster at the output end of the adapter tube through intermittent opening and closing of the air hole, the valve ring is driven by the oxygen flow input into the adapter tube to move towards the direction of the output end of the adapter tube after the air hole is sealed by the valve core portion so as to propel the oxygen cluster, and the valve ring is driven by the reset portion to move towards the input end of the adapter tube after the air hole is opened by the valve core portion.

As a preferable scheme of the present invention, the reset portion includes an air bag installed in the adapter tube, a pneumatic device communicated with an annular cavity inside the air bag is installed at an output end of the adapter tube, the cross section of the air bag is annular, a plurality of annular folding grooves for folding the air bag are axially arranged on the air bag, and one end of the air bag is coaxially installed at an end portion of the valve ring.

As a preferable aspect of the present invention, a protruding strip is disposed on an inner wall of the adapter tube along a stretching direction of the airbag, a vertical groove communicating with the plurality of annular folding grooves is disposed on an outer side of the airbag, and the protruding strip is inserted into the vertical groove.

As a preferable scheme of the present invention, the valve core portion includes a fixed turntable, a movable turntable, and a fixed turntable, wherein a side wall of the fixed turntable is fixedly mounted on a wall of the air hole, the movable turntable is axially fixed and rotatably mounted in the air hole, the fixed turntable and the movable turntable are coaxially and superposedly arranged, the fixed turntable and the movable turntable are both provided with an even number of identical valve holes, a closed portion having the same size as that of the valve hole is formed between adjacent valve holes, and the movable turntable is driven by a trigger portion to rotate relative to the fixed turntable.

As a preferred scheme of the present invention, the axes of the fixed turntable and the movable turntable are both provided with an axle hole in a penetrating manner, the triggering portion includes a transmission shaft installed in the axle hole and having a length greater than the sum of the axial lengths of the movable turntable and the fixed turntable, and a guide projection fixedly installed on the side wall of the transmission shaft;

the transmission shaft is driven by the reaction force of the ejector pins to move in the shaft hole, and the transmission shaft drives the movable turntable to rotate through the matching of the guide lug and the chute.

As a preferable scheme of the present invention, a plurality of convex teeth are respectively disposed at both end portions of the transmission shaft and at an end portion of the thimble, the plurality of convex teeth are uniformly distributed in a circumferential direction around an axis of the thimble and the transmission shaft, and the transmission shaft is circumferentially stopped by the plurality of convex teeth engaged with each other at both end portions when the transmission shaft contacts the thimble.

As a preferable scheme of the present invention, an annular mounting groove is formed on a hole wall of the air hole, an axial limiting ring matched with the annular mounting groove is mounted on the movable turntable, and an axial length of the annular mounting groove is the same as a thickness of the axial limiting ring.

As a preferable aspect of the present invention, a damping pad in friction fit with a groove wall of the annular mounting groove is embedded in the axial limiting ring, and the movable turntable maintains a state of being relatively stationary with the fixed turntable after rotating by a resistance force applied to the damping pad by the groove wall of the annular mounting groove.

As a preferred scheme of the present invention, one end of each of the two ends of the thimble, which is far away from the thimble, is supported and mounted on the inner wall of the end of the adapter tube through a plurality of diagonal draw bars which are uniformly distributed in the circumferential direction, and the two ends of the adapter tube are detachably mounted with end covers which support the thimble through the diagonal draw bars and are provided with corresponding interfaces.

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

the oxygen supply device comprises an oxygen supply pipe, an atomizer, a pushing assembly, a connecting pipe, a gas valve assembly, a pushing assembly and a connecting pipe, wherein the oxygen supply pipe is connected with the atomizer through the connecting pipe, the atomizer supplies oxygen to the atomizer through the oxygen supply pipe and the connecting pipe in sequence, the gas valve assembly in the connecting pipe is matched with the pushing assembly to adapt to the breathing rhythm of a patient and supply oxygen to the atomizer intermittently and stably, and therefore the purposes of improving the atomization treatment comfort of the patient and avoiding waste of liquid medicine are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a valve assembly according to an embodiment of the present invention;

FIG. 3 is a schematic view of a guiding rib structure according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a movable turntable according to an embodiment of the present invention;

FIG. 5 is a schematic view of a guide bump structure according to an embodiment of the present invention;

FIG. 6 is a schematic view of an axial stop ring structure according to an embodiment of the invention.

The reference numerals in the drawings denote the following, respectively:

1-an atomizer; 2-an oxygen catheter; 3-atomizing cup; 4-a breath following device; 5-guiding convex strips; 6-vertical groove; 7-a thimble; 8-an annular mounting groove; 9-axial spacing ring; 10-a damping pad; 11-diagonal draw bars; 12-an end cap; 13-convex teeth;

401-a transfer tube; 402-a gas valve assembly; 403-a propulsion assembly;

4021-valve ring; 4022-blowholes; 4023-fixed turntable; 4024-a movable turntable; 4025-valve hole; 4026-closure; 4027-chute; 4028-a drive shaft; 4029-a guide projection;

4031-balloon; 4032-pneumatic devices; 4033-annular folding grooves.

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.

As shown in fig. 1 to 6, the present invention provides an aerosol inhalation device for pediatrics, which comprises an atomizer 1, an oxygen tube 2 and an aerosol cup 3 connected in sequence, wherein the aerosol cup 3 is connected with the oxygen tube 2 through a breath following device 4 for performing intermittent nebulization according to the breathing rhythm of a patient;

the breathing following device 4 comprises an adapter tube 401, a gas valve assembly 402 and a propelling assembly 403 which are installed in the adapter tube 401, the oxygen delivery tube 2 is in butt joint with the atomizing cup 3 through the adapter tube 401, oxygen flow entering the adapter tube 401 is cut off into oxygen clusters moving towards the atomizing cup 3 in one opening and closing period of the gas valve assembly 402, and the propelling assembly 403 is used for propelling the oxygen clusters so that the oxygen clusters form stable high-speed oxygen flow when passing through the atomizing cup 3.

The input end and the output end of the adapter tube 401 are intermittently separated through the air valve assembly 402, so that the oxygen flow in the input adapter tube 401 is intermittently cut off to form an oxygen mass moving to the output end of the adapter tube 401, the oxygen mass carries liquid medicine in the atomizing cup 3 to be diffused and atomized when being sprayed out through a nozzle of the atomizing cup 3 (Venturi tube principle), the spraying frequency of the atomizing cup 3 can be adjusted through adjusting the interval duration of the adjacent opening and closing period of the air valve assembly 402 (the process of conducting and separating the input end and the output end of the adapter tube 401 once by the air valve assembly 402), the condition that the patient breathes unsmoothly or even causes respiratory spasm of the patient due to the conflict between the continuously sprayed foggy liquid medicine and the expiration of the patient is avoided, the comfort of the patient in the atomization treatment process is improved, and the defect that the liquid medicine is wasted due to the fact that part of foggy liquid medicine is discharged along with the expiration of the patient due to continuous spraying is avoided.

In addition, the volume inside the adapter tube 401 is preferably 400 ml-600 ml, and when the oxygen delivery amount of the nebulizer 1 is fixed, the duration of each opening and closing period of the air valve assembly 402 (the duration of the conduction between the input end and the output end of the adapter tube 401) determines the volume of the oxygen bolus under the normal pressure state, so as to adapt to the air amount required by each breath of children and adults.

The pushing assembly 403 has the functions that on one hand, the oxygen mass is pushed in a piston pushing mode and the like, so that the kinetic energy of the oxygen mass caused by cutting off the oxygen flow is avoided, and the situation that the liquid medicine in the atomizing cup 3 cannot be successfully atomized or the atomization effect is poor because the oxygen mass cannot form high-speed air flow when passing through the nozzle of the atomizing cup 3 is avoided; on the other hand, when having avoided air valve unit 402 to be in the both ends with switching pipe 401 and oxygen group to the motion of atomizing cup 3, because oxygen group rear gas is taken out and is leaded to forming the condition emergence of negative pressure in switching pipe 401, thereby avoided the problem that the oxygen group in switching pipe 401 can't not carry to atomizing cup 3, thereby realized that oxygen group forms stable high-speed air current's purpose when passing through atomizing cup 3, be favorable to steadily atomizing the liquid medicine in atomizing cup 3 when realizing intermittent type spraying.

According to the embodiment of the invention, the oxygen tube 2 and the atomizing cup 3 are connected through the adapter tube 401, the atomizer 1 supplies oxygen to the atomizing cup 3 through the oxygen tube 2 and the adapter tube 401 in sequence, and the air valve assembly 402 in the adapter tube 401 is matched with the pushing assembly to adapt to the breathing rhythm of a patient so as to intermittently and stably supply oxygen to the atomizing cup 3, so that the purposes of improving the comfort of atomization treatment of the patient and avoiding waste of liquid medicine are achieved.

The air valve assembly 402 comprises a valve ring 4021, an air hole 4022 for oxygen to pass through is formed in the valve ring 4021 in a penetrating manner, and a valve core part for controlling the opening and closing of the air hole 4022 is installed on the valve ring 4021 in a sliding manner;

the propulsion assembly 403 comprises a reset portion for driving the valve ring 4021 to move towards the input end of the adapter tube 401, the valve ring 4021 is slidably installed in the reset portion, the valve core portion forms an oxygen group at the output end of the adapter tube 401 through intermittent opening and closing of the air hole 4022, the valve ring 4021 is driven by the oxygen flow input into the adapter tube 401 to move towards the output end of the adapter tube 401 after the air hole 4022 is closed by the valve core portion so as to propel the oxygen group, and the valve ring 4021 is driven by the reset portion to move towards the input end of the adapter tube 401 after the air hole 4022 is opened by the valve core portion so as to reset.

In addition, when the valve ring 4021 is driven by the oxygen flow to move to the output end of the adapter tube 401, the reset part has an auxiliary pushing effect on the valve ring 4021, so as to avoid a situation that the valve ring 4021 cannot move to the output end of the adapter tube 401 in time under the driving of the oxygen flow due to the frictional resistance between the valve ring 4021 and the inner wall of the adapter tube 401.

The valve ring 4021 is similar to a piston which reciprocates in the adapter tube 401 and is provided with an air hole 4022 in the center, and the valve core part is triggered in a way that:

the first mode is that the valve ring 4021 is triggered by the reaction force fed back by the inner walls at the two ends of the adapter tube 401, and in the process that the valve ring 4021 completes one reciprocating motion in the adapter tube 401 under the coordination of the reset part and the oxygen flow, the valve core part is triggered by the inner wall at the input end of the adapter tube 401 to close the air hole 4022, and when the valve ring 4021 with the closed air hole 4022 is driven to move from the input end of the adapter tube 401 to the output end, the purpose of propelling the oxygen group is achieved. When the valve ring 4021 moves to the output end of the adapter tube 401, the valve core part is triggered by the inner wall of the output end of the adapter tube 401 to conduct the air hole 4022, so that the defect of overlarge movement resistance of the valve ring 4021 caused by the closing of the air hole 4022 is avoided in the process that the valve ring 4021 is driven to reset to the input end of the adapter tube 401, and when the valve ring 4021 is reset to the input end of the adapter tube 401, namely the valve core part is triggered to close the air hole 4022, an oxygen group can be formed immediately, and the range of adapting to different breathing rhythms of patients is favorably improved;

in this way, the spool portion is triggered and switched to a state closing the air vent 4022 when the valve ring 4021 moves to the input end of the adapter tube 401. At this time, the time length of one reciprocating motion of the valve ring 4021 is as long as the time length of the valve ring 4021 staying at the input end of the adapter tube 401 is as long as the input end and the output end of the adapter tube 401 are isolated. The time length that the input and the output of adapter tube 401 switched on is adjusted to the speed that the accessible resets that valve circle 4021 resets to the input of adapter tube 401 to the regulation, thereby adjust the volume of the oxygen group that forms under the ordinary pressure in order to satisfy the demand of patient single breathing cycle to the inspiration volume, and adjust the time length that the input and the output of adapter tube 401 were kept apart to the speed that valve circle 4021 moved to the input of adapter tube 401 through the portion that resets, from the frequency that forms the oxygen group in order to adapt to patient's breathing rhythm.

In the second mode, the valve core portion is a micro circuit component such as an electromagnetic valve and the like which is arranged on the valve ring 4021 and used for opening and closing the air hole 4022, and has the same function, and the valve core portion is connected with a respiration detection device (a respirator having the functions of respiration detection and auxiliary respiration or a device, a unit or a module having the same function and the like) which is arranged outside the adapter tube 401 and used for detecting the respiration rhythm of the patient, and the valve core portion is triggered to perform opening and closing actions through an electric signal sent by the respiration detection device.

The invention combines the use cost and the implementation difficulty to carry out the preferred embodiment of the first mode selection after the comprehensive analysis, and the specific embodiment of the first mode is as follows:

the reset part comprises an air bag 4031 installed in the adapter tube 401, a pneumatic device 4032 communicated with an annular cavity inside the air bag 4031 is installed on the output end of the adapter tube 401, the cross section of the air bag 4031 is annular, a plurality of annular folding grooves 4033 used for folding the air bag 4031 are axially arranged on the air bag 4031, and one end of the air bag 4031 is coaxially installed at the end part of the valve ring 4021.

The airbag 4031 with an annular cross section forms a foldable airbag 4031 through an annular folding groove 4033 with a thin outer wall and a thin inner wall, and the airbag 4031 is driven by an external pneumatic device 4032 to expand and contract so that the valve ring 4021 reciprocates in the adapter tube 401 along with axial expansion and contraction of the airbag 4031.

Gasbag 4031 adopts medical grade PC material, sets up gasbag 4031 in adapter tube 401 completely and is favorable to adapter tube 401 with outside isolation, has avoided adopting mechanical drive mechanisms such as cylinder, electric putter and has leaded to the drawback that the degree of difficulty of adapter tube 401 and outside isolation increases, has guaranteed the cleanness of oxygen suppliment, and is favorable to reducing the occupation to adapter tube 401 inner space. In addition, the air bag 4031 is light and thin, and the cross section of the air bag 4031, which is matched with the valve ring 4021 of which the center is provided with the air hole 4022, is annular, so that compared with other driving modes, the air bag has the advantage of facilitating uniform stress on all parts of the valve ring 4021.

It should be added that, in the embodiment of the present invention, the working condition of the pneumatic device 4032 is correspondingly adjusted according to the observation or detection result of the respiratory state of the patient, and according to the difference of the manner of acquiring the respiratory state of the patient, the pneumatic device 4032 is correspondingly the air pump or the combination of the air pump and the respiratory detection device, that is, the working condition of the air pump is adjusted after the respiratory state of the patient is observed by the doctor or the patient is observed by the patient, or the working condition of the air pump is adjusted after the respiratory state of the patient is detected and analyzed by the respiratory detection device, and the specific implementation manner of the pneumatic device 4032 is correspondingly selected according to the actual use condition and the requirement.

Preferably, a convex strip 5 is arranged on the inner wall of the adapter tube 401 along the expansion direction of the air bag 4031, a vertical groove 6 communicated with the plurality of annular folding grooves 4033 is arranged on the outer side of the air bag 4031, and the convex strip 5 is inserted into the vertical groove 6.

The surface of the convex strip 5 is smooth and is integrally formed on the inner wall of the adapter tube 401, the air bag 4031 avoids the conditions of torsion and displacement in the expansion and contraction process through the matching of the vertical groove 6 and the convex strip 5, and the improvement of the stability of the repeated work of the air bag 4031 is facilitated.

The valve core portion comprises a fixed turntable 4023 with a side wall fixedly mounted on the hole wall of the air hole 4022 and a movable turntable 4024 axially fixed and rotatably mounted in the air hole 4022, the fixed turntable 4023 and the movable turntable 4024 are coaxial and arranged in an overlapping mode, the fixed turntable 4023 and the movable turntable 4024 are both provided with the same even number of valve holes 4025, and the movable turntable 4024 is driven by the trigger portion to rotate relative to the fixed turntable 4023.

The movable dial 4024 is driven by the trigger to rotate relative to the fixed dial 4023, so that the valve holes 4025 on the two are overlapped with each other to realize communication between two ends of the adapter tube 401, or the valve holes 4025 and the closing parts 4026 on the two are overlapped with each other to realize isolation between two ends of the adapter tube 401.

The axle center of fixed carousel 4023 and activity carousel 4024 department has all run through and has seted up the shaft hole, trigger part is including installing in the shaft hole and the transmission shaft 4028 that length is greater than the sum of the axial length of activity carousel 4024 and fixed carousel 4023, and the guide lug 4029 on the transmission shaft 4028 lateral wall of fixed mounting, set up on the pore wall of the shaft hole on the activity carousel 4024 and move the chute 4027 that lug 4029 cooperatees, the thimble 7 that just is relative with the shaft hole of protrusion in its tip inner wall is all installed at the inside both ends of adapter 401, transmission shaft 4028 is promoted along the shaft hole motion by the reaction force of thimble 7, and transmission shaft 4028 drives the rotation of activity carousel 4024 through the cooperation of guide lug 4029 and chute 4027.

The preferred movable turntable 4024 is disposed below the fixed turntable 4023 so that the movable turntable 4024 can be well attached to the fixed turntable 4023 by the blowing of the oxygen flow, thereby ensuring an isolation effect to both ends of the transition pipe 401 when the closing part 4026 of the movable turntable 4024 and the valve hole 4025 of the fixed turntable 4023 overlap each other.

The valve ring 4021 is driven by the airbag 4031 to move to the input end of the bottom of the adapter tube 401, at this time, the lower end of the transmission shaft 4028 protrudes out of the bottom of the movable turntable 4024, when the valve ring 4021 moves to the input end of the adapter tube 401, the transmission shaft 4028 is just pushed by the thimble 7 below, so that the transmission shaft 4028 moves upwards along the shaft hole, meanwhile, the guide block on the transmission shaft 4028 fixed in the circumferential direction moves along the inclined groove 4027 on the movable turntable 4024, so that the reaction force of the movable turntable 4024 on the guide block is driven to rotate in the forward direction, the valve hole 4025 on the movable turntable 4024 and the valve hole 4025 on the fixed turntable 4023 are overlapped with each other, and the conduction of the two ends of the adapter tube 401 is realized. At this time, the upper end of the transmission shaft 4028 protrudes out of the top of the fixed turntable 4023, so that when the valve ring 4021 moves to the output end of the top of the adapter tube 401, the transmission shaft 4028 and the upper thimble 7 cooperate to drive the movable turntable 4024 to rotate reversely and reset.

The slope, length, etc. of the chute 4027 are designed according to the angle of rotation required by the movable turntable 4024.

Preferably, a plurality of convex teeth 13 are arranged at both end portions of the transmission shaft 4028 and an end portion of the ejector pin 7, the plurality of convex teeth 13 are uniformly distributed in the circumferential direction around the axes of the ejector pin 7 and the transmission shaft 4028, and the transmission shaft 4028 is circumferentially stopped by the plurality of convex teeth 13 which are engaged with each other at the end portions of the transmission shaft 4028 and the ejector pin 7 when the transmission shaft 4028 is in contact with the ejector pin.

When the convex teeth 13 at the end of the transmission shaft 4028 are contacted with the corresponding ejector pins 7, the convex teeth 13 densely distributed on the surfaces of the transmission shaft 4028 and the ejector pins are engaged, so that the situation that the movable turntable 4024 cannot be driven to rotate or cannot rotate for a set angle due to the rotation of the transmission shaft 4028 in the axial movement is avoided.

In the above embodiment, it is further optimized that an annular mounting groove 8 is formed in the hole wall of the air hole 4022, an axial limiting ring 9 matched with the annular mounting groove 8 is mounted on the movable turntable 4024, and the axial length of the annular mounting groove 8 is the same as the thickness of the axial limiting ring 9.

The axial fixing of the movable turntable 4024 is realized by the matching of the axial limiting ring 9 and the annular mounting groove 8, so that the defect that the movable turntable 4024 cannot be driven to rotate or rotate for setting the angle due to the fact that the movable turntable 4024 is driven by the transmission shaft 4028 moving axially is avoided.

Preferably, the ends of the two end thimbles 7, which are far away from each other, are supported and mounted on the inner wall of the end portion of the adapting tube 401 through a plurality of inclined pull rods 11 which are uniformly distributed in the circumferential direction, and the end covers 12 which support the thimbles 7 through the inclined pull rods 11 and are provided with corresponding interfaces are detachably mounted at both ends of the adapting tube 401.

The purpose of providing a plurality of diagonal draw bars 11 is to facilitate the thimble 7, the air hole 4022 and the interface at the two ends of the adapter tube 401 to be coaxial, thereby reducing the kinetic energy loss of the oxygen flow passing through the adapter tube 401.

The detachable end cover 12 facilitates the installation of the thimble 7, the air bag 4031, the valve ring 4021 and other associated mechanisms in the adapter tube 401, the interface on the top end cover 12 is connected with the atomizing cup 3, the interface on the bottom end cover 12 is connected with the oxygen therapy tube 2, and the end parts of the two ends are all installed at the corresponding end parts of the adapter tube 401 through sealing.

In order to avoid the rotation of the movable turntable 4024 after the transmission shaft 4028 is separated from the thimble 7, a damping pad 10 in friction fit with the groove wall of the annular mounting groove 8 is embedded in the axial limiting ring 9, and the movable turntable 4024 keeps a state of relative rest with the fixed turntable 4023 after rotation through the resistance applied to the damping pad 10 by the groove wall of the annular mounting groove 8.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. The utility model provides an aerosol inhalation device that paediatrics was used, includes atomizer (1), oxygen therapy pipe (2) and atomizing cup (3) that connect gradually, its characterized in that: the atomizing cup (3) is connected with the oxygen tube (2) through a breathing following device (4) for adapting to the breathing rhythm of a patient to carry out intermittent spraying;

the breathing following device (4) comprises an adapter tube (401), and an air valve assembly (402) and a propelling assembly (403) which are installed in the adapter tube (401), wherein the oxygen delivery tube (2) is in butt joint with the atomizing cup (3) through the adapter tube (401), oxygen flow entering the adapter tube (401) is intercepted into an oxygen mass moving towards the atomizing cup (3) in one opening and closing period of the air valve assembly (402), and the propelling assembly (403) is used for propelling the oxygen mass so that the oxygen mass forms stable high-speed oxygen flow when passing through the atomizing cup (3);

the air valve assembly (402) comprises a valve ring (4021), an air hole (4022) for oxygen to pass through is formed in the valve ring (4021) in a penetrating mode, and a valve core part for controlling the air hole (4022) to open and close is arranged on the valve ring (4021) in a sliding mode;

the propulsion assembly (403) comprises a reset part for driving the valve ring (4021) to move towards the direction of the input end of the adapter tube (401), the valve ring (4021) is installed in the reset part in a sliding mode, the valve core part forms the oxygen mass at the output end of the adapter tube (401) through intermittent opening and closing of the air hole (4022), the valve ring (4021) is driven by the flow of oxygen input into the adapter tube (401) to move towards the direction of the output end of the adapter tube (401) after the air hole (4022) is closed by the valve core part so as to propel the oxygen mass, and the valve ring (4021) is driven by the reset part to move towards the input end of the adapter tube (401) so as to reset after the air hole (4022) is opened by the valve core part;

the reset part comprises an air bag (4031) arranged in the adapter tube (401), a pneumatic device (4032) communicated with an annular cavity in the air bag (4031) is arranged on the output end of the adapter tube (401), the cross section of the air bag (4031) is annular, a plurality of annular folding grooves (4033) used for folding the air bag (4031) are formed in the air bag (4031) along the axial direction, and one end of the air bag (4031) is coaxially arranged at the end part of the valve ring (4021);

a raised line (5) is arranged on the inner wall of the adapter tube (401) along the expansion direction of the air bag (4031), a vertical groove (6) communicated with the annular folding grooves (4033) is formed in the outer side of the air bag (4031), and the raised line (5) is inserted into the vertical groove (6);

the valve core part comprises a fixed turntable (4023) with a side wall fixedly mounted on the hole wall of the air hole (4022) and a movable turntable (4024) axially fixedly and rotatably mounted in the air hole (4022), the fixed turntable (4023) and the movable turntable (4024) are coaxial and arranged in an overlapped mode, the fixed turntable (4023) and the movable turntable (4024) are provided with the same even number of valve holes (4025), a closed part (4026) with the same size as the valve holes is formed between every two adjacent valve holes (4025), and the movable turntable (4024) rotates relative to the fixed turntable (4023) through the driving of a trigger part.

2. A pediatric aerosol inhalation device according to claim 1, wherein: the axis of the fixed turntable (4023) and the axis of the movable turntable (4024) are both provided with a shaft hole in a penetrating manner, the triggering part comprises a transmission shaft (4028) which is arranged in the shaft hole and has a length larger than the sum of the axial lengths of the movable turntable (4024) and the fixed turntable (4023), and a guide lug (4029) fixedly arranged on the side wall of the transmission shaft (4028);

the movable turntable (4024) is characterized in that a chute (4027) matched with the guide protrusion block (4029) is formed in the hole wall of the shaft hole, ejector pins (7) protruding out of the inner wall of the end portion of the adaptor tube (401) and opposite to the shaft hole are mounted at two ends of the inner portion of the adaptor tube (401), the transmission shaft (4028) is pushed by the reaction force of the ejector pins (7) to move along the shaft hole, and the transmission shaft (4028) drives the movable turntable (4024) to rotate through the matching of the guide protrusion block (4029) and the chute (4027).

3. An aerosol inhalation device for pediatric use according to claim 2, wherein: the ejector pin structure is characterized in that a plurality of convex teeth (13) are arranged at the end parts of two ends of the transmission shaft (4028) and the end part of the ejector pin (7), the convex teeth (13) are uniformly distributed in the circumferential direction around the axes of the ejector pin (7) and the transmission shaft (4028), and the transmission shaft (4028) is circumferentially stopped by the plurality of convex teeth (13) which are mutually meshed at the end parts of the transmission shaft (4028) and the ejector pin (7) when the transmission shaft (4028) is contacted with the ejector pin.

4. A pediatric aerosol inhalation device according to claim 1, wherein: annular mounting groove (8) have been seted up on the pore wall of air pocket (4022), install on activity carousel (4024) with annular mounting groove (8) matched with axial spacing ring (9), the axial length of annular mounting groove (8) with the thickness of axial spacing ring (9) is the same.

5. An aerosol inhalation device for pediatrics as claimed in claim 4 wherein: and a damping pad (10) in friction fit with the groove wall of the annular mounting groove (8) is embedded in the axial limiting ring (9), and the movable turntable (4024) keeps a relative static state with the fixed turntable (4023) after rotating through resistance applied to the damping pad (10) by the groove wall of the annular mounting groove (8).

6. An aerosol inhalation device for pediatric use according to claim 2, wherein: both ends the one end that thimble (7) kept away from each other all supports through a plurality of diagonal draw bars (11) of circumference evenly distributed and installs on the inner wall of switching pipe (401) tip, and the both ends of switching pipe (401) all can be dismantled and install through diagonal draw bars (11) are right thimble (7) support and are provided with end cover (12) of corresponding interface.