CN112891717A

CN112891717A - Ear-nose-throat quantitative medicine sprayer

Info

Publication number: CN112891717A
Application number: CN202110103607.2A
Authority: CN
Inventors: 聂丽华; 孙丽平; 唐静婷; 徐芳; 王英
Original assignee: Chongqing North Kuanren Hospital
Current assignee: Chongqing North Kuanren Hospital
Priority date: 2021-01-26
Filing date: 2021-01-26
Publication date: 2021-06-04

Abstract

The invention discloses an otolaryngology ration liquid medicine spraying device, which comprises a spraying mechanism, a medicine supply mechanism and a ration mechanism; the spraying mechanism comprises a spraying barrel and a push rod, a spraying pipe is fixedly arranged at one end of the spraying barrel, a first one-way valve is arranged at the communication position of the spraying pipe and the inner cavity of the spraying barrel, the first one-way valve is communicated with the spraying pipe from the inner cavity of the spraying barrel, the push rod is inserted into the spraying barrel, a piston column is arranged at one end of the push rod, which is positioned in the inner cavity of the spraying barrel, and the piston column is in sliding butt joint with the inner cavity wall of the spraying barrel; the medicine supply mechanism is fixedly arranged on the injection cylinder and supplies medicine liquid to the inner cavity of the injection cylinder through the medicine supply mechanism; the quantitative mechanism is fixedly arranged on the ejection cylinder and limits the piston column in the ejection cylinder so as to determine the dose of the ejection mechanism extracted from the drug supply mechanism. Above-mentioned otolaryngology ration liquid medicine spraying device, the dose of spraying is accurate, can not cause the waste, and has ensured that treatment effect reaches the optimum.

Description

Ear-nose-throat quantitative medicine sprayer

Technical Field

The invention relates to the technical field of medicine spraying, in particular to an otolaryngology quantitative medicine sprayer.

Background

Ear, nose and throat are the beginning of the head and face of the human body, which are open to the outside and are easily stimulated by environmental, physical, chemical and biological factors to cause structural and functional disorders. Among them, various inflammatory diseases are abundant. The main treatment means is drug therapy, which is divided into oral administration and spraying. The ear, nose and throat structures are different, but the common point is that the ear, nose and throat structures are all in vivo, and when the medicine is sprayed, the spraying head needs to be deeply inserted into the ear, nose and throat structures for spraying.

When clinically spraying the medicine to the ear, nose and throat of a patient, the medicine is mostly directly sprayed to the diseased part, but the spraying amount at each time is not accurate at present, more or less spraying is easy to happen, waste is caused, or the treatment effect cannot reach the optimal effect.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an otolaryngology quantitative medicine sprayer, which aims to solve the problems that most of medicines are directly sprayed to a diseased part when the medicines are sprayed to the otolaryngology of a patient in the prior art, but the spraying amount is not accurate every time, more or less medicines are easily sprayed, waste is caused, or the treatment effect cannot reach the optimal effect.

In order to solve the technical problem, the technical scheme adopted by the invention is as follows:

an otolaryngological metered dose applicator comprising:

the spraying mechanism comprises a spraying barrel and a push rod, the spraying barrel is provided with a hollow inner cavity, one end of the spraying barrel is fixedly provided with a spraying pipe, the spraying pipe is communicated with the inner cavity of the spraying barrel, a first one-way valve is arranged at the communication position of the spraying pipe and the inner cavity of the spraying barrel, the first one-way valve is communicated with the spraying pipe through the inner cavity of the spraying barrel, the push rod is inserted into the spraying barrel and extends through one end, far away from the spraying pipe, of the spraying barrel, one end, located in the inner cavity of the spraying barrel, of the push rod is provided with a piston column, and the piston column is in sliding butt joint with the inner cavity wall of the spraying barrel;

the medicine supply mechanism is fixedly arranged on the injection cylinder and is used for supplying medicine liquid to the inner cavity of the injection cylinder; and

the quantitative mechanism is fixedly arranged on the ejection cylinder and limits the piston column in the ejection cylinder so as to determine the dose of the ejection mechanism extracted from the medicine supply mechanism.

Spacing through dosing mechanism to the piston post, injection mechanism extracts quantitative liquid medicine from supplying in the medicine mechanism to through the removal of piston post, spray away the liquid medicine of extraction through the spray tube, the dose of spraying is accurate, can not cause the waste, and has ensured that treatment reaches the optimum.

Furthermore, the first check valve comprises a first baffle and a first elastic part, two ends of the first elastic part are respectively fixedly connected with the first baffle and the injection cylinder, the first baffle blocks a communication channel between the medicine spraying pipe and an inner cavity of the injection cylinder, and medicine liquid in the inner cavity of the injection cylinder can push the first baffle open to enter the medicine spraying pipe.

Furthermore, the otolaryngology ration liquid medicine spraying device further comprises a driving mechanism, the driving mechanism is fixedly arranged at one end of the spraying cylinder, which is far away from the liquid medicine spraying pipe, and is in driving connection with one end of the push rod, which is positioned outside the spraying cylinder, and the driving mechanism drives the push rod to move, so that the piston column is pushed to move. The driving mechanism is arranged to assist in pushing the push rod, so that time and labor are saved.

Furthermore, the driving mechanism comprises a support, a fixed handle, a movable handle, a driving plate and a second elastic piece, the support is fixedly arranged at one end of the spraying barrel, which is far away from the spraying pipe, and the fixed handle is fixedly arranged on the support; the middle part of the movable handle is hinged with the bracket, and the movable handle and the fixed handle form an included angle; the driving plate is slidably sleeved on the push rod outside the injection cylinder, one end of the driving plate is abutted against the support, and the other end of the driving plate is hinged with one end of the movable handle; the second elastic piece is sleeved on the push rod outside the injection cylinder, and two ends of the second elastic piece are fixedly connected with the end face of the injection cylinder and one surface of the driving plate respectively. Thereby extrude the liquid medicine through the motion of activity handle drive push rod to the one end motion of pesticide spray tube, convenient and practical very much.

Furthermore, one end of the spray pipe, which is far away from the spray cylinder, is provided with a spherical nozzle. The spherical nozzle can uniformly spray the liquid to the lesion part.

Further, the pesticide spraying pipe comprises a movable pipe, a fixed pipe and a locking nut, the fixed pipe is fixedly connected with the spraying barrel, the movable pipe is sleeved with the fixed pipe in a threaded mode, the locking nut is sleeved with the fixed pipe in a threaded mode, and one end face of the locking nut is abutted to the end face of the movable pipe. Through the threaded connection of activity pipe and fixed pipe increase the length of activity pipe, applicable in different disease regions, lock nut is used for fastening the activity pipe and prevents it not hard up.

Further, supply medicine mechanism includes connecting seat, medicine bottle, confession pencil and second check valve, the connecting seat set firmly in on the ejection of compact section of thick bamboo, just the inside of connecting seat is hollow structure, the inside of connecting seat with the inner chamber intercommunication of ejection of compact section of thick bamboo, the medicine bottle set firmly in on the connecting seat, supply the pencil set firmly in on the connecting seat and one end with the inside intercommunication of connecting seat, the other end that supplies the pencil passes through the bottleneck of medicine bottle stretches into in the medicine bottle, the second check valve is located in the connecting seat, the second check valve by supply the pencil accesss to the inner chamber of ejection of compact section of thick bamboo, the intercommunicating pore has been seted up on the connecting seat, the bottleneck of medicine bottle passes through intercommunicating pore is linked together with the external world. The liquid medicine in the medicine bottle enters the injection cylinder through the atmospheric pressure at the through hole, and the bottle mouth of the medicine bottle is fixedly connected with the connecting seat through threads, so that the medicine bottle is convenient to disassemble and replace.

Furthermore, the second one-way valve comprises a second baffle and a third elastic part, two ends of the third elastic part are respectively fixedly connected with the second baffle and the ejection cylinder, the second baffle blocks a communication channel between the medicine supply pipe and the inner cavity of the ejection cylinder, and the medicine liquid in the medicine bottle can push the second baffle open to enter the inner cavity of the ejection cylinder.

Furthermore, the quantitative mechanism comprises a supporting plate, a screw plug, a positioning handle, a fourth elastic piece and a limiting rod; the supporting plate is fixedly arranged on the injection cylinder, a plurality of limiting holes communicated with the inner cavity of the injection cylinder along the radial direction of the injection cylinder are formed in the supporting plate, and the limiting holes are uniformly arranged at intervals along the axial direction of the injection cylinder; the screw plug is in threaded connection with the limiting hole, one end, close to the inner cavity of the injection cylinder, of the screw plug is fixedly connected with one end of the fourth elastic piece, the fourth elastic piece is arranged in the limiting hole, and the other end of the fourth elastic piece is fixedly connected with the limiting rod; a driving groove is formed in one end, far away from the inner cavity of the injection cylinder, of the screw plug, and the positioning handle is in clamping fit with one of the screw plugs through the driving groove; one end of the limiting rod, which is far away from the fourth elastic piece, can extend into the inner cavity of the injection cylinder through the rotation of the screw plug; the piston post is kept away from the one end of pesticide spraying pipe is equipped with first conical surface, just the circumference middle part of piston post is equipped with the second conical surface, the conical top of second conical surface with the piston post forms a step, the gag lever post can slide first conical surface, and follow the second conical surface slide to with the step butt. Twist the downthehole plug screw of spacing of difference through the location handle for in the locating lever that connects through fourth elastic component stretched into the injection section of thick bamboo on the plug screw, first conical surface jack-up gag lever post when the piston post was to keeping away from the motion of pesticide spraying pipe one end, the gag lever post slips second conical surface and step butt again, can block the piston post and make it can not move again, reaches the purpose of quantitative extraction liquid medicine.

Furthermore, scales and numbers are arranged on the supporting plate, and the scales correspond to the limiting holes. Scales and numbers are provided to facilitate the metering of the amount of extracted liquid medicine.

By adopting the technical scheme, compared with the prior art, the invention has the beneficial effects that:

1. spacing through dosing mechanism to the piston post, injection mechanism extracts quantitative liquid medicine from supplying in the medicine mechanism to through the removal of piston post, spray away the liquid medicine of extraction through the spray tube, the dose of spraying is accurate, can not cause the waste, and has ensured that treatment reaches the optimum.

2. The liquid medicine of the medicine bottle is pressed into the injection cylinder by adopting the atmospheric pressure, other power sources such as a medical pump and the like are not needed, the structure is simple, and the cost is saved.

3. Thereby extrude the liquid medicine through the motion of actuating mechanism drive push rod to the one end motion of pesticide spray tube, convenient and practical very much.

4. The piston column can be clamped by driving the limiting rod by screwing the screw plugs in different limiting holes through the positioning handle, so that the aim of quantitatively extracting the liquid medicine is fulfilled, and the adjustment is convenient.

5. The structure is flexible and reliable, and the applicability is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

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

FIG. 2 is a structural view of a piston post of the present invention

FIG. 3 is a structural view of the spray tube of the present invention;

FIG. 4 is an enlarged view A of FIG. 1;

FIG. 5 is a structural view of the drug delivery mechanism of the present invention;

fig. 6 is a cross-sectional view of the dosing mechanism of the present invention.

Reference numerals:

the injection mechanism 1, the injection cylinder 11, the push rod 12, the piston column 121, the first conical surface 121A, the second conical surface 121B, the step 121C, the medicine spraying pipe 13, the movable pipe 131, the fixed pipe 132, the locking nut 133, the first check valve 14, the first baffle plate 141, the first elastic member 142 and the spherical nozzle 15;

the medicine supplying mechanism 2, the connecting seat 21, the communicating hole 21a, the medicine bottle 22, the medicine supplying pipe 23, the second one-way valve 24, the second baffle 241 and the third elastic piece 242;

the quantitative mechanism 3, a support plate 31, a screw plug 32, a positioning handle 33, a fourth elastic piece 34 and a limiting rod 35;

the driving mechanism 4, a bracket 41, a fixed handle 42, a movable handle 43, a driving plate 44 and a second elastic element 45.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1, the otolaryngological quantitative sprayer provided in this embodiment includes a spraying mechanism 1, a medicine supplying mechanism 2 and a quantitative mechanism 3. For convenience of description, the end of the spray cylinder 111 where the spray pipe 13 is provided is defined as front, and the other end is defined as rear.

Referring to fig. 2-4, the injection mechanism 1 includes an injection cylinder 11 and a push rod 12, the injection cylinder 11 has a hollow inner cavity, one end of the injection cylinder 11 is fixedly provided with a spraying tube 13, the spraying tube 13 is communicated with the inner cavity of the injection cylinder 11, a first check valve 14 is disposed at a communication position between the spraying tube 13 and the inner cavity of the injection cylinder 11, the first check valve 14 leads to the spraying tube 13 from the inner cavity of the injection cylinder 11, the push rod 12 is inserted into the injection cylinder 11 and extends through one end of the injection cylinder 11 away from the spraying tube 13, one end of the push rod 12 located in the inner cavity of the injection cylinder 11 is provided with a piston column 121, and the piston column 121 is in sliding contact with the inner cavity wall of the injection cylinder 11. The first check valve 14 includes a first baffle 141 and a first elastic member 142, two ends of the first elastic member 142 are respectively fixedly connected to the first baffle 141 and the spraying cylinder 11, the first baffle 141 blocks a communication channel between the spraying tube 13 and the inner cavity of the spraying cylinder 11, and the liquid medicine in the inner cavity of the spraying cylinder 11 can push the first baffle 141 to enter the spraying tube 13. In this embodiment, the first elastic member 142 is a coil spring.

The end of the spray pipe 13 remote from the spray cylinder 11 is provided with a ball nozzle 15. The ball nozzle 15 can uniformly spray the affected part. As a further optimized scheme, the spraying pipe 13 includes a movable pipe 131, a fixed pipe 132 and a locking nut 133, the fixed pipe 132 is fixedly connected with the spraying cylinder 11, the movable pipe 131 is sleeved on the fixed pipe 132 in a threaded manner, the locking nut 133 is sleeved on the fixed pipe 132 in a threaded manner, and one end surface of the locking nut 133 abuts against the end surface of the movable pipe 131. The length of the movable tube 131 is increased by the threaded connection of the movable tube 131 and the fixed tube 132, which is applicable to different affected areas, and the locking nut 133 is used to fasten the movable tube 131 to prevent it from loosening.

Referring to fig. 5, the medicine supply mechanism 2 is fixed on the injection cylinder 11, and supplies the medicine liquid to the inner cavity of the injection cylinder 11 through the medicine supply mechanism 2. Specifically, supply medicine mechanism 2 includes connecting seat 21, medicine bottle 22, supply pencil 23 and second check valve 24, connecting seat 21 sets firmly on spraying section of thick bamboo 11, and the inside of connecting seat 21 is hollow structure, the inside and the inner chamber intercommunication that sprays section of thick bamboo 11 of connecting seat 21, medicine bottle 22 sets firmly on connecting seat 21, supply pencil 23 set firmly on connecting seat 21 and one end and the inside intercommunication of connecting seat 21, supply in medicine bottle 22 is stretched into to the other end of medicine pencil 23 through the bottleneck of medicine bottle 22, second check valve 24 locates in connecting seat 21, second check valve 24 is by supplying pencil 23 to the inner chamber that sprays section of thick bamboo 11, intercommunicating pore 21a has been seted up on connecting seat 21, the bottleneck of medicine bottle 22 is linked together through intercommunicating pore 21a and the external world. The liquid medicine in the medicine bottle 22 enters the injection cylinder 11 through the atmospheric pressure at the communicating hole 21a, and the mouth of the medicine bottle 22 is fixedly connected with the connecting seat 21 through threads, so that the medicine bottle 22 is convenient to disassemble and replace. The second one-way valve 24 includes a second baffle 241 and a third elastic member 242, two ends of the third elastic member 242 are respectively fixedly connected to the second baffle 241 and the spraying cylinder 11, the second baffle 241 blocks a communication channel between the medicine supply tube 23 and the inner cavity of the spraying cylinder 11, and the medicine liquid in the medicine bottle 22 can push the second baffle 241 open to enter the inner cavity of the spraying cylinder 11. In this embodiment, the third elastic member 242 is a coil spring.

Referring to fig. 6, the quantitative mechanism 3 is fixed on the spraying cylinder 11, and the quantitative mechanism 3 limits the piston column 121 in the spraying cylinder 11 to determine the amount of the medicine extracted from the medicine supplying mechanism 2 by the spraying mechanism 1. Specifically, the quantitative mechanism 3 includes a support plate 31, a plug screw 32, a positioning handle 33, a fourth elastic member 34 and a limiting rod 35; the support plate 31 is fixedly arranged on the injection cylinder 11, the support plate 31 is provided with a plurality of limiting holes which are communicated with the inner cavity of the injection cylinder 11 along the radial direction of the injection cylinder 11, and the limiting holes are uniformly arranged at intervals along the axial direction of the injection cylinder 11; the screw plug 32 is in threaded connection with the limiting hole, one end of the screw plug 32, which is close to the inner cavity of the injection cylinder 11, is fixedly connected with one end of the fourth elastic part 34, the fourth elastic part 34 is arranged in the limiting hole, and the other end of the fourth elastic part 34 is fixedly connected with the limiting rod 35; one end of the screw plug 32, which is far away from the inner cavity of the injection cylinder 11, is provided with a driving groove, and the positioning handle 33 is in clamping fit with one of the screw plugs 32 through the driving groove; one end of the limiting rod 35 far away from the fourth elastic piece 34 can extend into the inner cavity of the injection cylinder 11 through the rotation of the screw plug 32; the piston column 121 is provided with a first conical surface 121A at an end away from the spray pipe 13, a second conical surface 121B is provided at a circumferential middle portion of the piston column 121, a step 121C is formed by a vertex of the second conical surface 121B and the piston column 121, and the limiting rod 35 can slide over the first conical surface 121A and slide along the second conical surface 121B to abut against the step 121C. The screw plugs 32 in different limiting holes are screwed through the positioning handle 33, so that the positioning rods connected with the screw plugs 32 through the fourth elastic piece 34 extend into the injection barrel 11; when the piston column 121 moves towards the end far away from the pesticide spraying pipe 13, the first conical surface 121A jacks up the limiting rod 35, and the limiting rod 35 slides over the second conical surface 121B to abut against the step 121C, so that the piston column 121 can be clamped and can not move any more, and the purpose of quantitatively extracting pesticide liquid is achieved. Certainly, as a further optimized scheme, scales and numbers are arranged on the supporting plate 31, and the scales correspond to the limiting holes. Scales and numbers are provided to facilitate the metering of the amount of extracted liquid medicine. In this embodiment, the fourth elastic member 34 is a coil spring.

As a further optimized scheme, the otolaryngology quantitative sprayer further comprises a driving mechanism 4, the driving mechanism 4 is fixedly arranged at one end of the spraying barrel 11 far away from the spraying pipe 13 and is in driving connection with one end of the push rod 12 located outside the spraying barrel 11, and the driving mechanism 4 drives the push rod 12 to move, so that the piston column 121 is pushed to move. The driving mechanism 4 is arranged to assist in pushing the push rod 12, so that time and labor are saved. Specifically, the driving mechanism 4 includes a bracket 41, a fixed handle 42, a movable handle 43, a driving plate 44 and a second elastic member 45, the bracket 41 is fixedly disposed at one end of the spraying barrel 11 far away from the spraying pipe 13, and the fixed handle 42 is fixedly disposed on the bracket 41; the middle part of the movable handle 43 is hinged with the bracket 41, and the movable handle 43 and the fixed handle 42 form an included angle; the driving plate 44 is slidably sleeved on the push rod 12 outside the injection cylinder 11, one end of the driving plate is abutted against the bracket 41, and the other end of the driving plate is hinged with one end of the movable handle 43; the second elastic element 45 is sleeved on the push rod 12 outside the injection cylinder 11, and two ends of the second elastic element are respectively fixedly connected with the end surface of the injection cylinder 11 and one surface of the driving plate 44. The movable handle 43 drives the push rod 12 to move towards one end of the medicine spraying pipe 13 so as to extrude the medicine liquid, and the medicine spraying device is very convenient and practical. In this embodiment, the second elastic member 45 is a screw spring.

Referring to fig. 1-6, the above-mentioned ear-nose-throat quantitative sprayer has the following operation processes:

firstly, according to the amount of medicine to be sprayed, the positioning handle 33 is inserted into the limiting hole at the corresponding position, the screw plug 32 is rotated by the positioning handle 33, so that the limiting rod 35 extends into the inner cavity of the spraying tube 11, at the moment, the push rod 12 can be pulled backwards, so that the piston column 121 moves towards one end far away from the spraying tube 13, at the moment, the first one-way valve 14 is closed, the second one-way valve 24 is opened, the liquid medicine in the medicine bottle 22 is pressed into the spraying tube 11 through the atmospheric pressure at the communication hole 21A, when the piston column 121 moves to the limiting rod 35, the limiting rod 35 slides through the first conical surface 121A and the second conical surface 121B to abut against the step 121C and be clamped, at the moment, the inner cavity of the spraying tube 11 between the piston column 121 and the spraying tube 13 is filled with the liquid medicine, and the set amount of. Then stretch into patient's disease department with spray tube 13, constantly pinch pressure movable handle 43 and extrude the liquid medicine into the inner chamber of a section of thick bamboo 11, first check valve 14 is opened this moment, second check valve 24 closes, gag lever post 35 slides second conical surface 121B and first conical surface 121A, the liquid medicine evenly sprays to disease department through the globular nozzle 15 on the spray tube 13, wait to spray and finish, rotate plug screw 32 through location handle 33 and with gag lever post 35 screw out the inner chamber of a section of thick bamboo 11 can, so as to spray the preparation for next time.

The specific working principle of the driving mechanism 4 is as follows: when the palm of one hand holds the fixed handle 42, the index finger pulls the movable handle 43, the movable handle 43 drives one end of the driving plate 44 to move forward, the driving plate 44 tilts relative to the push rod 12, the driving plate 44 is clamped with the push rod 12 to generate friction force, the push rod 12 is pushed by the friction force to move forward, the driving plate 44 compresses the second elastic element 45, and after the movable handle 43 is released, the second elastic element 45 pushes the driving plate 44 back to the original position and simultaneously drives the movable handle 43 to return to the original position.

According to the ear-nose-throat quantitative pesticide sprayer, the piston column 121 is limited through the quantitative mechanism 3, the spraying mechanism 1 extracts quantitative liquid medicine from the pesticide supply mechanism 2, and the extracted liquid medicine is sprayed out through the pesticide spraying pipe 13 through the movement of the piston column 121, so that the sprayed pesticide amount is accurate, no waste is caused, and the optimal treatment effect is guaranteed; the liquid medicine in the medicine bottle 22 is pressed into the injection cylinder 11 by adopting the atmospheric pressure, other power sources such as a medical pump and the like are not needed, the structure is simple, and the cost is saved; the driving mechanism 4 drives the push rod 12 to move towards one end of the pesticide spraying pipe 13 so as to extrude the pesticide liquid, thereby being very convenient and practical; the piston column 121 can be clamped by driving the limiting rod 35 by screwing the screw plugs 32 in different limiting holes through the positioning handle 33, so that the aim of quantitatively extracting the liquid medicine is fulfilled, and the adjustment is convenient; the structure is flexible and reliable, the applicability is strong, and the device is worth popularizing and using in the same or similar industries.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. An otolaryngology ration medicine sprayer, its characterized in that includes:

2. The otolaryngology dosing sprayer of claim 1, wherein the first check valve comprises a first baffle and a first elastic member, both ends of the first elastic member are fixedly connected with the first baffle and the spraying cylinder respectively, the first baffle blocks a communication passage between the spraying tube and the inner cavity of the spraying cylinder, and the liquid medicine in the inner cavity of the spraying cylinder can push the first baffle open to enter the spraying tube.

3. The otolaryngology dosing sprayer of claim 1 further comprising a driving mechanism, wherein the driving mechanism is fixedly disposed at an end of the spray cylinder remote from the spray tube and drivingly connected to an end of the push rod located outside the spray cylinder, and the driving mechanism drives the push rod to move, thereby driving the piston rod to move.

4. The otolaryngology dosing sprayer of claim 3, wherein the driving mechanism comprises a bracket, a fixed handle, a movable handle, a driving plate and a second elastic member, the bracket is fixedly arranged at one end of the spray cylinder far away from the spray pipe, and the fixed handle is fixedly arranged on the bracket; the middle part of the movable handle is hinged with the bracket, and the movable handle and the fixed handle form an included angle; the driving plate is slidably sleeved on the push rod outside the injection cylinder, one end of the driving plate is abutted against the support, and the other end of the driving plate is hinged with one end of the movable handle; the second elastic piece is sleeved on the push rod outside the injection cylinder, and two ends of the second elastic piece are fixedly connected with the end face of the injection cylinder and one surface of the driving plate respectively.

5. The otolaryngological metered dose applicator of claim 1 wherein an end of the applicator tube remote from the spray barrel is provided with a ball nozzle.

6. The otolaryngology quantitative sprayer of claim 1, wherein the spraying tube comprises a movable tube, a fixed tube and a lock nut, the fixed tube is fixedly connected with the spraying barrel, the movable tube is in threaded sleeve connection with the fixed tube, the lock nut is in threaded sleeve connection with the fixed tube, and one end face of the lock nut abuts against the end face of the movable tube.

7. The otolaryngology quantitative medicine sprayer of claim 1, wherein the medicine supply mechanism comprises a connecting seat, a medicine bottle, a medicine supply tube and a second check valve, the connecting seat is fixedly arranged on the spraying cylinder, the inside of the connecting seat is of a hollow structure, the inside of the connecting seat is communicated with the inner cavity of the spraying cylinder, the medicine bottle is fixedly arranged on the connecting seat, the medicine supply tube is fixedly arranged on the connecting seat, one end of the medicine supply tube is communicated with the inside of the connecting seat, the other end of the medicine supply tube extends into the medicine bottle through the bottle opening of the medicine bottle, the second check valve is arranged in the connecting seat, the second check valve is communicated with the inner cavity of the spraying cylinder through the medicine supply tube, the connecting seat is provided with a communication hole, and the bottle opening of the medicine bottle is communicated with the outside through the communication hole.

8. The otolaryngology dosing sprayer of claim 7, wherein the second one-way valve comprises a second baffle and a third elastic member, both ends of the third elastic member are fixedly connected with the second baffle and the spraying cylinder respectively, the second baffle blocks the communication passage between the medicine supply tube and the inner cavity of the spraying cylinder, and the medicine liquid in the medicine bottle can push the second baffle open to enter the inner cavity of the spraying cylinder.

9. The otolaryngology ration sprayer of claim 1, wherein the dosing mechanism comprises a support plate, a plug screw, a positioning handle, a fourth elastic member and a stop lever; the supporting plate is fixedly arranged on the injection cylinder, a plurality of limiting holes communicated with the inner cavity of the injection cylinder along the radial direction of the injection cylinder are formed in the supporting plate, and the limiting holes are uniformly arranged at intervals along the axial direction of the injection cylinder; the screw plug is in threaded connection with the limiting hole, one end, close to the inner cavity of the injection cylinder, of the screw plug is fixedly connected with one end of the fourth elastic piece, the fourth elastic piece is arranged in the limiting hole, and the other end of the fourth elastic piece is fixedly connected with the limiting rod; a driving groove is formed in one end, far away from the inner cavity of the injection cylinder, of the screw plug, and the positioning handle is in clamping fit with one of the screw plugs through the driving groove; one end of the limiting rod, which is far away from the fourth elastic piece, can extend into the inner cavity of the injection cylinder through the rotation of the screw plug; the piston post is kept away from the one end of pesticide spraying pipe is equipped with first conical surface, just the circumference middle part of piston post is equipped with the second conical surface, the conical top of second conical surface with the piston post forms a step, the gag lever post can slide first conical surface, and follow the second conical surface slide to with the step butt.

10. The otolaryngology ration sprayer of claim 9, wherein the support plate is provided with a scale and a number, the scale corresponding to the limiting hole.