CN215024084U

CN215024084U - Dosage-controllable syringe for anesthesia department

Info

Publication number: CN215024084U
Application number: CN202121302199.5U
Authority: CN
Inventors: 王明军
Original assignee: First Medical Center of PLA General Hospital
Current assignee: First Medical Center of PLA General Hospital
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2021-12-07
Anticipated expiration: 2031-06-10

Abstract

The application provides a syringe for department of anesthesia of steerable dose belongs to medical instrument technical field. The controllable-dose injector for the anesthesia department comprises an injection mechanism and a pressure regulating mechanism. Injection mechanism includes injection tube, seal assembly, pressure release subassembly, first rubber buffer, syringe, flow valve, pintle and syringe needle, seal assembly connect in the injection tube inner wall, injection tube one end seted up with the gas outlet that seal assembly laminated mutually. This application is through air compressor, the gas holder, control panel, first solenoid valve, first intake pipe, the injection tube, first rubber buffer, the flow valve, the LED screen, the second solenoid valve, the second intake pipe, press the board, the second layer board, the effect of pillar and second rubber buffer, thereby the purpose of steerable injection medicament dosage has been reached, through the automatic injection structure, but real time control injects the dose of patient's medicament, the experience of user to the syringe for the department of anesthesia is felt has been improved, the demand in current market has been satisfied.

Description

Dosage-controllable syringe for anesthesia department

Technical Field

The application relates to the field of medical equipment, in particular to a dose-controllable injector for an anesthesia department.

Background

The meaning of anesthesia is that the patient loses the sense wholly or locally temporarily by using a medicine or other methods to achieve the purpose of painless operation treatment, an injector for the department of anesthesia belongs to a common appliance for the department of anesthesia, the dosage of an injection medicament cannot be controlled by the existing injector for the department of anesthesia, and the experience sense of a user on the injector for the department of anesthesia is reduced due to the fact that the injection amount of the anesthetic needs to be accurately controlled during anesthesia, and the requirement of the current market cannot be met.

How to invent a controllable-dose syringe for anesthesia department to improve the problems becomes a problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to make up for the above deficiencies, the present application provides a dose-controllable syringe for an anesthesia department, which aims to solve the problem that the dose of a medicament injected by the syringe for the anesthesia department cannot be controlled.

The embodiment of the application provides a dose-controllable injector for an anesthesia department, which comprises an injection mechanism and a pressure regulating mechanism.

The injection mechanism comprises an injection tube, a sealing assembly, a pressure relief assembly, a first rubber plug, an injection tube, a flow valve, a pintle and a needle head, the sealing assembly is connected with the inner wall of the injection tube, one end of the injection tube is provided with a gas outlet which is jointed with the sealing assembly, the pressure relief assembly is installed at one side of the sealing assembly, the pressure relief assembly is connected with one end of the injection tube, the pintle is communicated with the other end of the injection tube through the injection tube, the needle head is communicated with one end of the pintle, the flow valve is arranged in the injection tube, the first rubber plug is connected inside the injection tube in a sliding manner, the pressure regulating mechanism comprises a gas storage tank, a first gas inlet pipe, a first electromagnetic valve, a second gas inlet pipe, a second electromagnetic valve and an air compressor, the gas storage tank is respectively communicated with the two ends of the injection tube through the first gas inlet pipe and the second gas inlet pipe, the first solenoid valve set up in the first intake pipe, the second solenoid valve set up in the second intake pipe, air compressor install in gas holder one side, air compressor gives vent to anger the end intercommunication and has the connecting pipe, air compressor give vent to anger the end pass through the connecting pipe with the gas holder intercommunication.

In the implementation process, when the first rubber plug moves rightwards in the injection tube, the medicament in the injection tube can be extruded to the needle head through the injection tube and the pintle, injecting the medicine into the patient, the sealing assembly is used for sealing the air outlet, the pressure relief assembly is used for discharging the gas from the air outlet on the injection tube to suck the medicine, the flow valve is used for detecting the dosage of the medicine passing through the injection tube, the air compressor is used for compressing the air, and store compressed air in the gas holder, first intake pipe and first solenoid valve are used for letting in the left side of first rubber buffer in the injection tube with compressed air from the gas holder, make the medicament on first rubber buffer right side extrude, carry out the anesthesia injection, and second intake pipe and second solenoid valve are used for compressed air to let in the right side of first rubber buffer in the injection tube from the gas holder, make first rubber buffer remove left, inhale the medicament in the injection tube.

In a specific embodiment, seal assembly includes spring, first layer board, second rubber buffer, first guide rail and first limiting plate, the spring with first guide rail symmetric connection in the injection tube inner wall, first layer board install in spring one end, the second rubber buffer connect in first layer board one side, the second rubber buffer is laminated with the gas outlet mutually, the spring cup joint in first guide rail surface, first limiting plate install in first guide rail one end.

In the above-mentioned realization process, the elasticity of spring makes the second rubber buffer hug closely in gas outlet department through first layer board, seals the gas outlet, and first guide rail and first limiting plate are used for making the difficult skew of spring, improve the stability that first layer board removed the in-process.

In a specific embodiment, the inner surface of the first supporting plate is provided with a first through hole, and the first guide rail slidably penetrates through the first through hole.

In a specific embodiment, the pressure release subassembly includes pillar, second layer board, presses board, second guide rail and second limiting plate, the pillar both ends with the second rubber buffer with the second layer board is connected, press the board install in second layer board one side, the second guide rail connect in injection cylinder one end, the second limiting plate install in second guide rail one end.

In the implementation process, the pressing plate is used for driving the second rubber plug to move through the support and the second supporting plate, so that the second rubber plug blocks the air outlet or is separated from the air outlet, and the second guide rail and the second limiting plate are used for improving the stability of the second supporting plate in the moving process.

In a specific embodiment, a second circular hole is formed in the inner surface of the second supporting plate, and the second guide rail penetrates through the second through hole in a sliding manner.

In a specific embodiment, the inner surface of the pintle is in threaded connection with the outer surface of the syringe barrel, and the outer surface of the syringe barrel is provided with scale marks.

In a specific embodiment, injection tube one end is the round platform shape, first rubber buffer with injection tube one end is laminated mutually, first rubber buffer one side is equipped with the arrow point, the directional scale mark of arrow point.

In the above implementation, the arrows and the scale lines are used to display the volume of the medicament in the syringe.

In a specific embodiment, the pressure regulating mechanism further comprises a third electromagnetic valve, and the third electromagnetic valve is arranged on the connecting pipe.

In the above implementation process, the third electromagnetic valve is used for controlling the communication state of the connecting pipe.

In a specific embodiment, the other side of the air storage tank is fixedly connected with an LED screen and a control panel from top to bottom in sequence.

In the implementation process, the LED screen and the control panel are used for controlling and displaying the working state of the injector.

In a specific embodiment, the LED screen, the control panel, the flow valve, the first solenoid valve, the second solenoid valve, the air compressor, and the third solenoid valve are electrically connected.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a controllable-dose syringe for anesthesia department provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of an injection mechanism provided in an embodiment of the present application;

FIG. 3 is a schematic structural view of a seal assembly provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a pressure relief assembly according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a pressure regulating mechanism according to an embodiment of the present application.

In the figure: 10-an injection mechanism; 110-a syringe; 120-a seal assembly; 121-a spring; 122-a first pallet; 123-a second rubber plug; 124-a first guide rail; 125-a first limiting plate; 130-a pressure relief assembly; 131-a pillar; 132-a second pallet; 133-pressing plate; 134-a second guide rail; 135-a second limiting plate; 140-first rubber stopper; 150-an injection tube; 160-flow valve; 170-pintle; 180-needle; 190-arrow head; 20-a pressure regulating mechanism; 210-a gas storage tank; 220-a first inlet pipe; 230-a first solenoid valve; 240-second intake pipe; 250-a second solenoid valve; 260-an air compressor; 270-a third solenoid valve; 280-LED screen; 290-control panel.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, the present application provides a controllable dosage syringe for anesthesia department, which comprises an injection mechanism 10 and a pressure regulating mechanism 20.

The pressure regulating mechanism 20 is communicated with the injection mechanism 10, and the pressure regulating mechanism 20 is used for driving the injection mechanism 10 to inject the medicine quantitatively to anaesthetize the patient.

Referring to fig. 1 and 2, the injection mechanism 10 includes a syringe barrel 110, a sealing assembly 120, a pressure relief assembly 130, a first rubber plug 140, an injection tube 150, a flow valve 160, a pintle 170 and a needle 180, the sealing assembly 120 is connected to an inner wall of the syringe barrel 110, one end of the syringe barrel 110 is provided with an air outlet attached to the sealing assembly 120, the pressure relief assembly 130 is installed at one side of the sealing assembly 120, the pressure relief assembly 130 is connected to one end of the syringe barrel 110, the pintle 170 is communicated with the other end of the syringe barrel 110 through the injection tube 150, the needle 180 is communicated with one end of the pintle 170, specifically, the needle 180 and the pintle 170 are an integrated structure, the flow valve 160 is disposed in the injection tube 150, the first rubber plug 140 is slidably connected to the interior of the syringe barrel 110, when the first rubber plug 140 moves rightward in the syringe barrel 110, the medicament in the syringe barrel 110 is squeezed into the needle 180 through the injection tube 150 and the pintle 170 to inject a patient, the sealing assembly 120 is used for sealing the air outlet, the pressure relief assembly 130 is used for discharging air from the air outlet on the syringe 110 to suck the medicament, and the flow valve 160 is used for detecting the amount of the medicament passing through the syringe 150.

In some specific embodiments, the inner surface of the pintle 170 is in threaded connection with the outer surface of the injection tube 150, the outer surface of the syringe barrel 110 is provided with scale marks, one end of the syringe barrel 110 is in a circular truncated cone shape, the first rubber stopper 140 is attached to one end of the syringe barrel 110, one side of the first rubber stopper 140 is provided with an arrow 190, the arrow 190 points to the scale marks, and the arrow 190 and the scale marks are used for displaying the volume of the medicament in the syringe barrel 110.

Referring to fig. 2 and 3, the sealing assembly 120 includes a spring 121, a first supporting plate 122, a second rubber plug 123, a first guide rail 124 and a first stopper 125, the spring 121 and the first guide rail 124 are symmetrically connected to an inner wall of the syringe 110, specifically, the spring 121 and the first guide rail 124 are symmetrically and fixedly connected to the inner wall of the syringe 110 by welding, the first supporting plate 122 is installed at one end of the spring 121, specifically, the first supporting plate 122 is installed at one end of the spring 121 by welding, the second rubber plug 123 is connected to one side of the first supporting plate 122, specifically, the second rubber plug 123 is fixedly connected to one side of the first supporting plate 122 by gluing, the second rubber plug 123 is attached to the gas outlet, the spring 121 is sleeved on an outer surface of the first guide rail 124, the first stopper 125 is installed at one end of the first guide rail 124, specifically, the first stopper 125 is fixedly installed at one end of the first guide rail 124 by welding, an elastic force of the spring 121 enables the second rubber plug 123 to be closely attached to the gas outlet through the first supporting plate 122, the air outlet is sealed, the first guide rail 124 and the first limiting plate 125 are used for enabling the spring 121 to be difficult to deflect, and stability of the first supporting plate 122 in the moving process is improved.

In some embodiments, the first supporting plate 122 has a first through hole formed on an inner surface thereof, and the first rail 124 slidably penetrates through the first through hole.

Referring to fig. 2, 3 and 4, the pressure relief assembly 130 includes a support column 131, a second supporting plate 132, a pressing plate 133, a second guide rail 134 and a second limiting plate 135, two ends of the support column 131 are connected to the second rubber plug 123 and the second supporting plate 132, specifically, two ends of the support column 131 are fixedly connected to the second rubber plug 123 and the second supporting plate 132 through gluing, the pressing plate 133 is installed at one side of the second supporting plate 132, specifically, the pressing plate 133 is fixedly installed at one side of the second supporting plate 132 through welding, the second guide rail 134 is connected to one end of the syringe 110, specifically, the second guide rail 134 is fixedly connected to one end of the syringe 110 through welding, the second limiting plate 135 is installed at one end of the second guide rail 134, specifically, the second limiting plate 135 is fixedly installed at one end of the second guide rail 134 through welding, the pressing plate 133 is used for driving the second rubber plug 123 to move through the support column 131 and the second supporting plate 132, so that the second rubber plug 123 blocks the air outlet or is separated from the air outlet, the second guide rail 134 and the second stopper plate 135 serve to improve stability during movement of the second palette 132.

In some embodiments, the second supporting plate 132 has a second circular hole formed on an inner surface thereof, and the second guide rail 134 slidably penetrates through the second through hole.

Referring to fig. 1, 2 and 5, the pressure regulating mechanism 20 includes an air storage tank 210, a first air inlet pipe 220, a first electromagnetic valve 230, a second air inlet pipe 240, a second electromagnetic valve 250 and an air compressor 260, the air storage tank 210 is respectively communicated with two ends of the syringe 110 through the first air inlet pipe 220 and the second air inlet pipe 240, the first electromagnetic valve 230 is disposed in the first air inlet pipe 220, the second electromagnetic valve 250 is disposed in the second air inlet pipe 240, the air compressor 260 is mounted on one side of the air storage tank 210, specifically, the air compressor 260 is fixedly mounted on one side of the air storage tank 210 through screws, an air outlet end of the air compressor 260 is communicated with a connecting pipe, an air outlet end of the air compressor 260 is communicated with the air storage tank 210 through the connecting pipe, the air compressor 260 is used for compressing air and storing the compressed air in the air storage tank 210, the first air inlet pipe 220 and the first electromagnetic valve 230 are used for introducing the compressed air from the air storage tank 210 to the left side of the first rubber stopper 140 in the syringe 110, the medicament on the right side of the first rubber stopper 140 is extruded for anesthetic injection, and the compressed air in the second air inlet pipe 240 and the second electromagnetic valve 250 is introduced into the right side of the first rubber stopper 140 in the syringe 110 from the air storage tank 210, so that the first rubber stopper 140 moves leftwards and the medicament is sucked into the syringe 110.

In some specific embodiments, the pressure regulating mechanism 20 further includes a third electromagnetic valve 270, the third electromagnetic valve 270 is disposed on the connecting pipe, the other side of the air storage tank 210 is fixedly connected with an LED screen 280 and a control panel 290 from top to bottom, specifically, the other side of the air storage tank 210 is fixedly connected with the LED screen 280 and the control panel 290 from top to bottom through screws, the LED screen 280, the control panel 290, the flow valve 160, the first electromagnetic valve 230, the second electromagnetic valve 250, the air compressor 260 and the third electromagnetic valve 270 are electrically connected, the third electromagnetic valve 270 is used for controlling the communication state of the connecting pipe, and the LED screen 280 and the control panel 290 are used for controlling and displaying the operating state of the injector.

The working principle of the device is as follows: the air compressor 260 stores compressed air into the air storage tank 210 through a connection pipe, when injecting a medicament, a medical staff firstly inserts the needle 180 into the anesthesia site of a patient, the first electromagnetic valve 230 is opened through the control panel 290, the compressed air in the air storage tank 210 enters the left side of the first rubber plug 140 in the syringe barrel 110 through the first air inlet pipe 220, at this time, the pressure on the left side of the first rubber plug 140 is greater than the pressure on the right side, the first rubber plug 140 moves rightwards, the medicament on the right side of the first rubber plug 140 flows to the anesthesia site of the patient through the injection pipe 150, the pintle 170 and the needle 180, the flow valve 160 can detect the flow of the medicament passing through the injection pipe 150, and display the dose through the LED screen 280, thereby facilitating the control of the dose of the medicament, when the medicament needs to be inhaled, the first electromagnetic valve 230 is closed and the second electromagnetic valve 250 is opened through the control panel 290, the compressed air in the air storage tank 210 flows into the right side of the first rubber plug 140 in the syringe barrel 110 through the second air inlet pipe 240, press the board 133 simultaneously rightwards, press board 133 and can drive pillar 131 through second layer board 132 and move rightwards, pillar 131 can drive second rubber buffer 123 and move rightwards, second rubber buffer 123 breaks away from with the gas outlet, the left gas of first rubber buffer 140 passes through gas outlet discharge injection tube 110 this moment, the pressure on first rubber buffer 140 right side can be greater than left pressure, first rubber buffer 140 can move leftwards, the medicament can be through injection tube 150, pintle 170 and syringe needle 180 inhale in injection tube 110, thereby the purpose of steerable injection medicament dose has been reached, through the automatic injection structure, the dose of patient's medicament can be injected in real time control, the user has improved the experience of user to the syringe for the department of anesthesia, the demand in current market has been satisfied.

It should be noted that, the specific model and specification of the syringe barrel 110, the spring 121, the second rubber stopper 123, the first rubber stopper 140, the syringe tube 150, the flow valve 160, the pintle 170, the needle 180, the air storage tank 210, the first electromagnetic valve 230, the second electromagnetic valve 250, the air compressor 260, the third electromagnetic valve 270, the LED screen 280 and the control panel 290 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply and the principle of the flow valve 160, the first solenoid valve 230, the second solenoid valve 250, the air compressor 260, the third solenoid valve 270, the LED screen 280 and the control panel 290 will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A controllable dosage syringe for anesthesia department is characterized by comprising

An injection mechanism (10), the injection mechanism (10) comprising a syringe (110), a sealing assembly (120), a pressure relief assembly (130), a first rubber stopper (140), an injection tube (150), a flow valve (160), a pintle (170) and a needle (180), the sealing component (120) is connected with the inner wall of the injection tube (110), one end of the injection tube (110) is provided with an air outlet which is jointed with the sealing component (120), the pressure relief assembly (130) is arranged at one side of the sealing assembly (120), the pressure relief assembly (130) is connected with one end of the syringe barrel (110), the pintle (170) is communicated with the other end of the syringe (110) through the syringe (150), the needle head (180) is communicated with one end of the pintle (170), the flow valve (160) is arranged in the injection tube (150), the first rubber plug (140) is connected to the inside of the syringe barrel (110) in a sliding manner;

the pressure regulating mechanism (20) comprises a pressure regulating mechanism (20) and the pressure regulating mechanism (20) comprises a gas storage tank (210), a first gas inlet pipe (220), a first electromagnetic valve (230), a second gas inlet pipe (240), a second electromagnetic valve (250) and an air compressor (260), wherein the gas storage tank (210) is communicated with the two ends of the injection cylinder (110) through the first gas inlet pipe (220) and the second gas inlet pipe (240) respectively, the first electromagnetic valve (230) is arranged in the first gas inlet pipe (220), the second electromagnetic valve (250) is arranged in the second gas inlet pipe (240), the air compressor (260) is arranged on one side of the gas storage tank (210), the gas outlet end of the air compressor (260) is communicated with a connecting pipe, and the gas outlet end of the air compressor (260) is communicated with the gas storage tank (210) through the connecting pipe.

2. The injector for department of anesthesia with controllable dosage according to claim 1, wherein said sealing assembly (120) comprises a spring (121), a first supporting plate (122), a second rubber plug (123), a first guiding rail (124) and a first limiting plate (125), said spring (121) and said first guiding rail (124) are symmetrically connected to the inner wall of said syringe barrel (110), said first supporting plate (122) is installed at one end of said spring (121), said second rubber plug (123) is connected to one side of said first supporting plate (122), said second rubber plug (123) is attached to the air outlet, said spring (121) is sleeved on the outer surface of said first guiding rail (124), and said first limiting plate (125) is installed at one end of said first guiding rail (124).

3. The controllable dose syringe for anesthesia department of claim 2, wherein the first supporting plate (122) has a first through hole opened on its inner surface, and the first guiding rail (124) is slidably inserted through the first through hole.

4. A controllable dose syringe for anesthesia department according to claim 2, wherein said pressure relief assembly (130) comprises a pillar (131), a second supporting plate (132), a pressing plate (133), a second guiding rail (134) and a second limiting plate (135), said pillar (131) is connected to said second rubber plug (123) and said second supporting plate (132) at both ends, said pressing plate (133) is installed on one side of said second supporting plate (132), said second guiding rail (134) is connected to one end of said syringe barrel (110), said second limiting plate (135) is installed on one end of said second guiding rail (134).

5. The controllable dose syringe for anesthesia department of claim 4, wherein the second supporting plate (132) has a second circular hole on its inner surface, and the second guiding rail (134) is slidably inserted through the second through hole.

6. A controllable dose anesthetic syringe as claimed in claim 1, wherein the inner surface of the pintle (170) is threadedly engaged with the outer surface of the syringe (150), and the outer surface of the barrel (110) is provided with graduations.

7. A controllable dose syringe for anesthesia department as claimed in claim 6, wherein said barrel (110) has a truncated cone shape at one end, said first rubber stopper (140) is attached to one end of said barrel (110), an arrow (190) is provided at one side of said first rubber stopper (140), said arrow (190) points to the scale mark.

8. A controllable dose anesthetic syringe as claimed in claim 1, characterized in that the pressure regulating mechanism (20) further comprises a third solenoid valve (270), and the third solenoid valve (270) is disposed on the connecting tube.

9. A controllable dose syringe for anesthesia department as claimed in claim 8, wherein said air container (210) is fixedly connected with an LED screen (280) and a control panel (290) from top to bottom on the other side.

10. A controllable dose anesthetic syringe as claimed in claim 9, characterized in that said LED screen (280), said control panel (290), said flow valve (160), said first solenoid valve (230), said second solenoid valve (250), said air compressor (260) and said third solenoid valve (270) are electrically connected.