Injector for internal treatment of a hollow organ

Abstract

The utility model provides a syringe for cavity organ inside treatment, including injection cylinder and injection piston, the inside of injection cylinder is provided with a plurality of injection channels and premixing channel, a plurality of injection channels are mutually isolated and are arranged, can inject the liquid medicine to a plurality of injection channels simultaneously, realize the synchronous injection medicine of simultaneously, the bottom of a plurality of injection channels is linked together to form premixing channel, and the liquid medicine can flow to premixing channel and carry out premixing, the top of a plurality of injection channels all is provided with corresponding input valve, to inject the liquid medicine to corresponding injection channel, the bottom of injection cylinder still is provided with balloon assembly, to close the entrance of cavity organ by balloon assembly, prevent the drug leakage in the injection process, the top of injection cylinder still is provided with and sprays the component, can be used for the drug spray state injection of repair factor, growth factor or antibiotic etc, to inject out to promote the even large -scale coverage of a small amount of drug cavity viscera inner surface and promote the wound repair, anti -microbial infection.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a syringe for treating the inside of hollow organs such as the uterine cavity, stomach cavity, and esophagus. Background Technology

[0002] With the rapid development of medical technology, the treatment of injuries to hollow organs has gradually attracted widespread attention from clinicians. Currently, the treatment of injuries to hollow organs mainly involves local drug delivery through the injection of drugs or gels into cavities such as the uterine cavity, stomach cavity, and esophagus. Taking intrauterine perfusion as an example, this local drug delivery method can significantly increase the drug concentration within the uterine cavity, effectively treating endometrial diseases. Clinical studies have shown that intrauterine perfusion therapy can improve symptoms of chronic endometritis, increase implantation success rate, and improve clinical pregnancy rate. For example, intrauterine perfusion can increase endometrial blood flow, significantly improve endometrial inflammation, regulate endometrial receptivity, thereby increasing embryo implantation rate and improving the clinical outcome of recurrent implantation failure. For patients after surgery for intrauterine adhesions, intrauterine perfusion therapy can promote the separation and repair of intrauterine adhesions, improving pregnancy success rate. Similarly, in the treatment of gastric bleeding, endoscopic application of hemostatic drugs (such as thrombin, Monroe's solution, tissue adhesives, etc.) directly to the bleeding point using a syringe can achieve rapid hemostasis in a short time, reducing bleeding volume and lowering the treatment failure rate. For esophageal and gastric variceal bleeding, a multi-channel syringe is used to aspirate the gastric contents, followed by irrigation with ice-cold saline. Then, saline containing norepinephrine is injected and compressed with a balloon, which can effectively control the bleeding and reduce the incidence of postoperative complications.

[0003] However, existing syringe devices and treatment methods used in clinical practice still have significant limitations. First, current syringes typically only support single-drug injections, making it difficult to achieve precise combinations of multiple drugs. Each administration procedure requires repeated insertion and removal of the syringe, increasing the number of steps and time consumed, and reducing treatment efficiency. Furthermore, repeated procedures not only exacerbate patient discomfort but may also increase the risk of infection and postoperative complications. Second, due to limitations in the design of existing syringes, it is difficult to achieve simultaneous or sequential injection of multiple drugs, failing to meet the precise control requirements for drug timing and dosage in different clinical situations. For example, in intrauterine perfusion therapy, if two different drugs need to be injected separately, the current procedure requires two independent injections with a time interval, which may lead to uneven drug concentration distribution and affect treatment efficacy. Similarly, in the treatment of gastric bleeding, if hemostatic and healing-promoting drugs need to be used in combination, existing syringe devices cannot achieve simultaneous or alternating injections, failing to achieve the desired therapeutic effect. Therefore, developing a new syringe device that can achieve simultaneous injection of multiple drugs, simplify procedures, and improve treatment efficiency has significant clinical application value and market demand.

[0004] In summary, designing and manufacturing a multifunctional injector suitable for treating hollow organs, enabling precise and simultaneous injection of multiple drugs while reducing operational difficulty and patient discomfort during the injection process, is a pressing technical challenge in the medical field. The implementation of this invention will provide an innovative solution to these problems. Utility Model Content

[0005] The technical problem to be solved by this invention is to provide a syringe for internal treatment of hollow organs, so as to solve at least one of the above-mentioned technical problems.

[0006] To address the aforementioned technical problems, this utility model provides a syringe for treating internal cavity organs. The syringe includes: a syringe barrel, which has a plurality of injection channels and a premixing channel inside. The plurality of injection channels are isolated from each other, and their bottoms are connected to form the premixing channel. Each of the plurality of injection channels has a corresponding input valve at its top for injecting medication into the corresponding injection channel through the input valve. The bottom of the syringe barrel also has a spray assembly and a balloon assembly. An injection piston includes a gripping part and a plurality of push plungers. The tops of the push plungers are connected to the gripping part, and the bottoms of the push plungers are movably connected inside the plurality of injection channels. The push plungers slide relative to the corresponding injection channel along its length. A rubber pad is provided at the bottom of each push plunger, and the rubber pad is adapted to the size of the injection channel.

[0007] Optionally, the syringe further includes a spray assembly, which includes an atomizing nozzle and a first injection tube. The atomizing nozzle is disposed at the bottom of the syringe, and the first injection tube is disposed on one side of the syringe. The other end of the first injection tube extends to the bottom of the syringe and is connected to the atomizing nozzle.

[0008] Optionally, the atomizing nozzle includes a nozzle body and a spray cover. The nozzle body is connected to the bottom of the syringe, and the first injection tube is connected to the nozzle body. The spray cover is sleeved on the liquid outlet end of the nozzle body, and the spray cover is rotatably connected to the nozzle body. Both the liquid outlet end of the nozzle body and the spray cover have a hemispherical structure.

[0009] Optionally, the nozzle body has a plurality of first liquid outlet holes on its liquid outlet end; the spray cover has a plurality of second liquid outlet holes that correspond one-to-one with the first liquid outlet holes.

[0010] Optionally, the balloon assembly includes: a support balloon, which is arranged around the bottom of the syringe; a second injection tube, which is disposed on the other side of the syringe; and the other end of the second injection tube extends downward toward the bottom of the syringe and communicates with the support balloon.

[0011] Optionally, the support balloon has a disc-shaped structure.

[0012] Optionally, the side of the support balloon closest to the injection cylinder is provided with an outwardly protruding anti-slip ring.

[0013] Optionally, the bottom of the syringe is provided with a number of surrounding liquid outlet holes, all of which are connected to the premixing channel; wherein, the liquid outlet holes are located below the balloon.

[0014] Optionally, the syringe further includes: a pressure sensor disposed at the bottom of the syringe barrel; and a display screen disposed on the handle of the top of the syringe barrel.

[0015] Optionally, the bottom of the injection cylinder has a streamlined structure.

[0016] Beneficial effects: This utility model provides a syringe for treating hollow organs, comprising a syringe barrel and an injection piston. The syringe barrel has several injection channels and a premixing channel. Each injection channel is separated by a partition, allowing simultaneous injection of medication into multiple channels. Dosage forms include, but are not limited to, solutions, suspensions, emulsions, syrups, ointments, creams, and gels. The bottoms of the injection channels are interconnected to form a premixing channel, allowing medication to flow into and be premixed. A certain space is reserved within the syringe to allow two medications or chemical gels to react before entering the hollow organ. Each injection channel has a corresponding input valve at its top, allowing the operator to inject medication into the corresponding channel. A balloon assembly is located at the bottom of the syringe barrel to seal the entrance to the hollow organ, preventing drug leakage during injection. When uninflated, the balloon does not extend beyond the outside of the syringe barrel, allowing it to pass smoothly through the hollow organ to the designated location. The syringe includes a grip and several push plungers. The tops of the push plungers are connected to the grip, allowing the operator to push all the push plungers forward and backward by pulling the grip, thus achieving simultaneous injection. The bottoms of the push plungers slide relative to each other within several injection channels. The bottom of the push plunger engages with the top of the corresponding injection channel, preventing the push plunger from completely retracting from the syringe. Several input valves are located above the maximum upward sliding position of the push plunger, facilitating the operator to inject medication into the injection channels via the input valves. A spray assembly is also included, comprising an atomizing nozzle and a first injection tube. The atomizing nozzle injects repair factors, growth factors, or antibiotics, evenly covering most of the cavity surface with a small amount of these medications. Spraying onto the cavity surface promotes wound healing and combats microbial infection, thereby improving treatment efficiency and reducing treatment costs. This invention constructs a syringe for treating internal cavity organs, enabling simultaneous injection of multiple medications, reducing operational steps during injection, improving treatment efficiency, and enhancing patient comfort.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the syringe provided in an embodiment of this application; Figure 2 This is a schematic diagram of the syringe provided in an embodiment of this application; Figure 3 This is a partial structural schematic diagram of the syringe provided in an embodiment of this application; Figure 4 This is a partial cross-sectional view of the syringe provided in an embodiment of this application; Figure 5 This is a schematic diagram of the spray shroud in the atomizing nozzle provided in the embodiments of this application; Figure label: 1—Injection cartridge; 11—Injection channel; 12—Premixed channel; 13—Liquid outlet hole; 14—Handle; 2—Injection piston; 21—Holding part; 22—Propeller plunger; 23—rubber pad; 3—Input valve; 4—Spray assembly; 41—Atomizing nozzle; 411—Sprayer head body; 4111—First spray hole; 412—Spray hood; 4121—Second spray nozzle; 42—First injection tube; 5—Balloon assembly; 51—Supporting balloon; 52—Second injection tube; 53—Anti-slip ring belt; 6—Pressure sensor; 7—Display screen; Detailed Implementation The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2 This embodiment provides a syringe for internal treatment of hollow organs. The syringe includes: a syringe barrel 1, which has a plurality of injection channels 11 and a premixing channel 12. The plurality of injection channels 11 are isolated from each other, and their bottoms are connected to form the premixing channel 12. Each of the plurality of injection channels 11 has a corresponding input valve 3 at its top to inject drugs into the corresponding injection channel 11 through the input valve 3. The bottom of the syringe barrel 1 also has a spray assembly 4 and a balloon assembly 5. An injection piston 2 includes a gripping part 21 and a plurality of push plungers 22. The tops of the plurality of push plungers 22 are connected to the gripping part 21, and the bottoms of the plurality of push plungers 22 are movably connected inside the plurality of injection channels 11. The plurality of push plungers 22 slide relative to the corresponding injection channel 11 along the length direction. Each of the plurality of push plungers 22 has a rubber pad 23 at its bottom, and the rubber pad 23 is adapted to the size of the injection channel 11.

[0021] Specifically, this invention provides a syringe for treating internal cavity organs, comprising a syringe barrel 1 and an injection piston 2. The syringe barrel 1 has several injection channels 11 and a premixing channel 12. Each injection channel 11 is separated by a partition, allowing for simultaneous injection of medication into multiple channels 11. Dosage forms include, but are not limited to, solutions, suspensions, emulsions, syrups, ointments, creams, and gels. This simultaneous injection of medication, compared to existing methods that require sequential injection and mixing, reduces the need for repeated injections. The operation steps of the liquid injection system accommodate the simultaneous use of multiple drugs, reducing operation time. Several injection channels 11 are interconnected at their bottoms to form a premixing channel 12, allowing drugs to flow into and premix within this channel. A certain amount of space is reserved within the syringe to allow two drug solutions or chemical gels to react before entering the hollow organ. The premixing channel 12 is connected to an outlet located at the bottom of the syringe barrel 1. Each injection channel 11 has a corresponding input valve 3 at its top, allowing the operator to inject the drug solution into the corresponding channel 11. Additionally, a spray assembly 4 is included for injecting repair solutions via the spray assembly 4. Drugs such as growth factors or antibiotics are sprayed onto the cavity surface in small amounts to evenly cover most of the cavity surface, promoting wound healing and preventing microbial infection, thereby improving treatment efficiency and reducing treatment costs. The bottom of the syringe 1 is also equipped with a balloon assembly 5 to seal the entrance to the patient's cavity organ, preventing leakage of the drug or gel during injection. The injection piston 2 includes a grip 21 and several push plungers 22. The tops of the push plungers 22 are connected to the grip 21. The operator can push all the push plungers 22 forward by pulling the grip 21 back and forth, thus achieving… Simultaneous injection; the bottoms of several push plungers 22 are all located inside several injection channels 11 and slide relative to each other. The bottom of the push plunger 22 is engaged with the top of the corresponding injection channel 11, so that the push plunger 22 cannot be completely withdrawn from the syringe. Several input valves 3 are arranged above the maximum upward sliding position of the push plunger 22, which meets the reasonable structural arrangement of the operator to inject the drug liquid into the injection channel 11 through the input valves 3. In this way, a syringe for the treatment of hollow organs is constructed to achieve simultaneous injection of multiple drugs, reduce the number of operation steps in the injection process, improve treatment efficiency and patient comfort.

[0022] In practical use, the operator needs to first pull the injection piston 2 upwards to its maximum extent, so that all the push plungers 22 are positioned above the input valves 3. When using a rigid syringe 1, the operator should first place the syringe horizontally and slightly tilt the outlet 13 of the syringe 1 upwards before injecting the corresponding medication into the input valves 3. When the syringe 1 is a flexible syringe, the operator should first place the syringe horizontally and fold the outlet 13 of the syringe 1 upwards to a slightly upward tilt before injecting the corresponding medication into the input valves 3. This avoids... The corresponding drug solutions are pre-mixed by flowing downwards, thus achieving simultaneous and synchronous drug treatment. The syringe is then inserted into the patient's body, and the balloon assembly 4 is adjusted to secure the syringe within the patient's body. After successful insertion and fixation, the operator can hold the syringe with one hand, using their thumb to push the grip back and forth. As needed, the valve is activated to propel the drugs forward along their respective injection channels, where they are then mixed through the premixing channel. As an option, the syringe 1 can be designed as a rigid tube or a flexible tube, depending on the needs of different patients and the ease of use. In this embodiment, a rigid tube is used.

[0023] Furthermore, the specific number of injection channels 11 can be selected according to the treatment needs of the operator or patient to improve the convenience and adaptability of the operation process; the multiple injection channels 11 can be rationally arranged according to the specific number of injection channels 11. For example, when there are two injection channels 11, the injection channels 11 can be arranged as follows: Figure 1-2 The injection channels 11 are arranged in parallel as shown. Alternatively, when there are three or four injection channels 11, they can be arranged around the axis of the injection cylinder 1, with the cross-section of the injection cylinder 1 equally divided. As an alternative, the cross-section of the injection channels 11 remains circular to ensure a tight fit between the rubber pad 23 and the injection channel 11. The number of push plungers 22 corresponds to the number of injection channels 11.

[0024] In some possible embodiments, the syringe further includes a spray assembly 4, which includes an atomizing nozzle 41 and a first injection tube 42. The atomizing nozzle 41 is disposed at the bottom of the syringe 1, and the first injection tube 42 is disposed on one side of the syringe 1. The other end of the first injection tube 42 extends to the bottom of the syringe 1 and is connected to the atomizing nozzle 41.

[0025] Specifically, since medication application to the inner surface of organs is mainly achieved clinically through endoscopic local injection, the procedure is delicate and the application site is small, making it difficult to achieve the desired effect for widespread lesions; the nebulizer nozzle 41 can be used to inject drugs including repair factors, growth factors, or antibiotics. However, because these drugs are relatively expensive and the dosage is very small, therefore, ... Figure 1-2As shown, with the atomizing nozzle 41 and the first injection tube 42, the operator can add the corresponding agent to the atomizing nozzle 41 through the first injection tube 42, and spray the growth factor onto the inner surface of the cavity organ. This allows a small amount of growth factor to evenly cover most of the cavity surface, promoting wound repair and resisting microbial infection, thereby improving treatment efficiency and reducing treatment costs. The atomizing nozzle 41 is located at the bottom of the syringe, and the end away from the syringe barrel is set as an arc-shaped blunt head, which can provide protection to the outside and effectively prevent punctures and other injuries.

[0026] In some possible implementations, the atomizing nozzle 41 includes a nozzle body 411 and a spray cover 412. The nozzle body 411 is connected to the bottom of the syringe 1, and the first injection tube 42 is connected to the nozzle body 411. The spray cover 412 is sleeved on the liquid outlet end of the nozzle body 411 and is rotatably connected to the nozzle body 411. Both the liquid outlet end of the nozzle body 411 and the spray cover 412 have a hemispherical structure. A plurality of first spray holes 4111 are opened on the liquid outlet end of the nozzle body 411. A plurality of second spray holes 4121 corresponding one-to-one with the first spray holes 4111 are opened on the spray cover 412.

[0027] Specifically, such as Figure 4 and Figure 5 As shown, the atomizing nozzle 41 includes a nozzle body 411 and a spray cover 412. The spray cover 412 is fitted onto the liquid outlet end of the nozzle body 411. When it is necessary to adjust the size of the spray, the operator can rotate the spray cover 412 relative to the nozzle body 411 to adjust the relative position between the first spray hole 4111 and the second spray hole 4121. For example, when a small spray effect is needed, the spray cover 412 can be rotated to partially align the first spray hole 4111 and the second spray hole 4121. At this time, the total spray hole area is reduced, thereby reducing the spray effect. Conversely, the spray cover 412 can be rotated until the first spray hole 4111 and the second spray hole 4121 are completely aligned to achieve the maximum spray effect.

[0028] In some possible implementations, the balloon assembly 5 further includes: a support balloon 51, which is arranged around the bottom of the syringe 1; a second injection tube 52, which is disposed on the other side of the syringe 1; and the other end of the second injection tube 52 extends downward toward the bottom of the syringe 1 and communicates with the support balloon 52.

[0029] Specifically, the balloon assembly 5 includes a support balloon 51 and a second injection tube 52. The support balloon 51 is used to seal the inlet of the cavity, preventing the bottom of the syringe 1 from dislodging from the hollow organ and ensuring that the drug is directly injected into the cavity to guarantee the therapeutic effect. During operation, the support balloon 51 is placed at the inlet of the hollow organ through the syringe 1. Physiological saline or air is injected into the support balloon 51 through the second injection tube 52, causing the support balloon 51 to expand. Then, the syringe 1 is pulled up, and the expanded support balloon is fitted to the inside of the hollow organ inlet, with the anti-slip ring fitting against the inner wall of the organ, so that the balloon fits tightly against the organ without gaps or displacement, and prevents drug leakage.

[0030] In some possible implementations, the support balloon 51 has a disc-shaped structure.

[0031] Because current clinical practice typically involves using expansion and filling to seal inlet passages (such as the esophagus and vagina), this method not only causes compressive ischemia and hypoxia to the inner walls of tissues and organs, but also requires time for the organs to recover after the filling device is removed; therefore, compared to the previous method of sealing inlet passages (such as the esophagus and vagina) through expansion and filling, this application sets the support balloon 51 as a disc-shaped structure (such as... Figure 2 As shown, it has a large surface area and a thin thickness, which can directly cover and fit the inside of the entrance of the hollow organ without affecting the channel and has less impact on the patient's organs and comfort.

[0032] Taking the uterine cavity as an example, the conventional method of sealing is to fill the inside of the balloon with saline / gas and fill it between the internal os and the external os of the cervix. However, in this application, by setting the support balloon 51 as a disc-shaped structure, the support balloon 51 can be placed inside the uterus and the disc-shaped support balloon 51 can be attached to and covered with the inner side of the internal os of the cervix, thereby achieving the effect of sealing the entrance passage and preventing the medicine from flowing out.

[0033] In some possible implementations, the side of the support balloon 51 closest to the syringe 1 is provided with an outwardly protruding anti-slip ring 53.

[0034] Specifically, by providing an outwardly protruding anti-slip ring 53 on the side of the support balloon 51 near the syringe 1, the friction is increased, further preventing the device from sliding back and forth during the injection process.

[0035] In some possible implementations, the bottom circumferential surface of the syringe 1 is provided with a plurality of circumferentially arranged liquid outlet holes 13, and the plurality of liquid outlet holes 13 are all connected to the premixing channel 12; wherein, the plurality of liquid outlet holes 13 are all arranged below the balloon.

[0036] Specifically, the bottom of the syringe 1 is provided with several outlet holes 13 that are connected to the premixing channel 12 to provide an outlet for the liquid to flow out. When several outlet holes 12 are provided, the operator should place the syringe horizontally for use, that is, keep the syringe horizontal or slightly tilted when injecting the liquid.

[0037] In some possible implementations, the syringe further includes: a pressure sensor 6 disposed at the bottom of the syringe barrel 1; and a display screen 7 disposed on the handle 14 disposed at the top of the syringe barrel 1.

[0038] Specifically, since the internal volume of each patient's hollow organs is different—for example, in uterine cavity treatment, some patients need 4ml of medication to fill the uterine cavity, while others only need 3ml—it is difficult to accurately determine the internal volume of hollow organs for different patients during the initial treatment process. If a patient's uterine cavity requires 4ml of medication but only 3ml is injected during the actual injection, the treatment effect will not be ideal. Similarly, if a patient's uterine cavity requires 4ml of medication but more than 4ml is injected during the actual injection, discomfort may occur due to organ over-expansion. Therefore, by setting up a pressure sensor, the pressure inside the patient's hollow organs can be detected. During the continuous injection of liquid into the patient's cavity, medical staff can obtain the pressure value inside the patient's cavity in real time through the display screen 7, so that medical staff can know whether the injection volume is sufficient and accurately control the pressure applied inside the hollow organs. When the injection volume reaches the required pressure value, the injection is stopped, improving the injection efficiency of medical staff. As a feasible method, the pressure sensor 6 can be a miniature pressure sensor, which can be reasonably installed at the bottom of the syringe 1.

[0039] Specifically, as an feasible approach, the pressure sensor 6 should be a high-precision, highly reliable miniature pressure sensor to ensure accurate measurement of pressure changes within hollow organs; the display screen 7 should be mounted on the handle 14 of the syringe 1 to facilitate real-time monitoring of pressure data by medical personnel during operation. Simultaneously, the display screen 7 should also be equipped with a processor for data storage and analysis to facilitate subsequent evaluation and summarization of the treatment process.

[0040] In some possible implementations, the bottom of the injection cylinder 1 has a streamlined structure.

[0041] Specifically, the bottom of the syringe 1 is designed with a streamlined structure. By providing a smooth structure, damage to the hollow organ during insertion is reduced, improving patient comfort. The surface treatment of the bottom of the syringe 1 is further optimized to make it smoother, reducing friction and damage to the hollow organ during insertion. Furthermore, the shape and size of the bottom of the syringe 1 should be designed according to different hollow organs to ensure better adaptation and fit to the inlet area of ​​the hollow organ.

[0042] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. All should be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

[0043] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A syringe for internal treatment of hollow organs, characterized in that, The syringe includes: The syringe (1) has several injection channels (11) and a premixing channel (12) inside. The injection channels (11) are isolated from each other, and the bottoms of the injection channels (11) are connected to form the premixing channel (12). Each injection channel (11) has a corresponding input valve (3) at its top, so as to inject the drug into the corresponding injection channel (11) through the input valve (3). The bottom of the syringe (1) is also provided with a spray assembly (4) and a balloon assembly (5). The injection piston (2) includes a gripping part (21) and a plurality of push plungers (22). The tops of the plurality of push plungers (22) are connected to the gripping part (21), and the bottoms of the plurality of push plungers (22) are movably connected inside the plurality of injection channels (11). The plurality of push plungers (22) slide relative to the corresponding injection channel (11) along the length direction. The bottoms of the plurality of push plungers (22) are provided with rubber pads (23), and the rubber pads (23) are adapted to the size of the injection channel (11).

2. The syringe according to claim 1, characterized in that, The spray assembly (4) includes an atomizing nozzle (41) and a first injection tube (42). The atomizing nozzle (41) is disposed at the bottom of the syringe, and the first injection tube (42) is disposed on one side of the syringe (1). The other end of the first injection tube (42) extends to the bottom of the syringe (1) and is connected to the atomizing nozzle (41).

3. The syringe according to claim 2, characterized in that, The atomizing nozzle (41) includes a nozzle body (411) and a spray cover (412). The nozzle body (411) is connected to the bottom of the injection cylinder (1), and the first injection tube (42) is connected to the nozzle body (411). The spray cover (412) is sleeved on the liquid outlet end of the nozzle body (411), and the spray cover (412) is rotatably connected to the nozzle body (411). The liquid outlet end of the nozzle body (411) and the spray cover (412) are both hemispherical.

4. The syringe according to claim 3, characterized in that, The nozzle body (411) has a plurality of first spray holes (4111) on its liquid outlet end; the spray cover (412) has a plurality of second spray holes (4121) that correspond one-to-one with the first spray holes (4111).

5. The syringe according to claim 4, characterized in that, The balloon assembly (5) includes: A support balloon (51) is arranged around the bottom of the syringe (1); The second injection tube (52) is located on the other side of the injection cylinder (1); the other end of the second injection tube (52) extends downward toward the bottom of the injection cylinder (1) and is connected to the support balloon (51).

6. The syringe according to claim 5, characterized in that, The support balloon (51) has a disc-shaped structure.

7. The syringe according to claim 6, characterized in that, The supporting balloon (51) has an outwardly protruding anti-slip ring (53) on the side near the injection cylinder (1).

8. The syringe according to claim 7, characterized in that, The bottom circumferential surface of the syringe (1) is provided with a plurality of liquid outlet holes (13), and the plurality of liquid outlet holes (13) are all connected to the premixing channel (12); wherein, the plurality of liquid outlet holes (13) are all arranged below the balloon.

9. The syringe according to claim 1, characterized in that, The syringe also includes: Pressure sensor (6), the pressure sensor (6) is disposed at the bottom of the syringe (1); The display screen (7) is located on the top of the syringe (1) and a handle (14) is provided thereon.

10. The syringe according to any one of claims 1-9, characterized in that, The bottom of the injection cylinder (1) has a streamlined structure.

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