Novel injector

Abstract

The utility model discloses a novel injector, relates to the field of medical instruments and equipment, and can solve the problem that the required anesthetic dosage is difficult to control due to the fact that the injection speed of an existing injector is difficult to control in the injection process in the prior art. And the positioning ball component is promoted to smoothly enter the small-diameter section area of the inner cavity of the movable sleeve. At the moment, a first steel ball in the positioning ball component is tightly attached to the inner wall of the movable sleeve, and a second steel ball is tightly contacted with an annular groove in the push rod, so that enough clamping force is generated, and the injection speed is effectively controlled; and the second steel ball is propped against the annular groove of the push rod, so that the discomfort of a patient caused by too high or too low injection speed is avoided, and meanwhile, the accurate dose of medicine can be injected into the body of the patient, so that the treatment effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical device equipment, and particularly relates to a novel syringe. Background Art

[0002] Local anesthesia means that, while the patient remains conscious, local anesthetics are applied to specific parts of the body to temporarily block the sensory nerve conduction function of that part, while ensuring that the motor nerve conduction function remains intact or is blocked to a certain extent. In the daily diagnosis and treatment of stomatology, whether it is treating, repairing, plastic surgery or performing minor surgical operations on patients, local anesthesia plays an indispensable role.

[0003] Currently, during oral anesthesia, a syringe is generally used for injecting anesthetics. However, existing syringes have problems in that the injection speed is not easy to control during injection, resulting in difficulty in controlling the required dose of anesthetic, which to a certain extent affects the anesthetic effect and the patient's comfort. Summary of the Utility Model

[0004] In order to solve the problem that existing syringes have difficulty in controlling the injection speed during injection, resulting in difficulty in controlling the required dose of anesthetic, this application provides a novel syringe to solve the above problems.

[0005] In order to achieve the above object, the technical solution adopted in this application is as follows:

[0006] A novel syringe includes a syringe and a liquid medicine bottle. The liquid medicine bottle is detachably arranged inside the syringe. The syringe includes a syringe barrel. A push rod component is arranged inside the syringe barrel. One end of the push rod component is detachably connected with a push handle.

[0007] A fixing sleeve is detachably connected to the end of the push rod component close to the push handle. A bottle pressing member is arranged on the outer wall of the push rod component. A movable sleeve is arranged on the outer wall of the fixing sleeve. A first inner cavity is formed by enclosing between the push rod component, the fixing sleeve and the bottle pressing member. A second inner cavity is formed by enclosing between the fixing sleeve and the movable sleeve. An inner ring compression spring is arranged in the first inner cavity. An outer ring compression spring is arranged in the second inner cavity. A limiting groove is also opened at the part of the fixing sleeve close to the push handle. A positioning ball component for clamping the push rod component is arranged inside the limiting groove.

[0008] A handle for cooperating with the push handle to be pushed is also arranged on the outer wall of the movable sleeve.

[0009] As a further improvement of the present utility model, the inner compression spring is sleeved on the outer wall of the bottle pressing member and abuts against the inner wall surfaces at both ends of the first inner cavity, and the outer compression spring is sleeved on the outer wall of the fixed sleeve and abuts against the inner wall surfaces at both ends of the second inner cavity.

[0010] As a further improvement of the present utility model, the diameter of the inner compression spring is smaller than that of the outer compression spring, and the tension of the inner compression spring is greater than that of the outer compression spring.

[0011] As a further improvement of the present utility model, the positioning ball component includes a positioning ball column, a first steel ball and a second steel ball. The positioning ball column is arranged in the middle of the limiting groove. The first steel ball is arranged at one end of the positioning ball column close to the movable sleeve and abuts against the inner wall surface of the movable sleeve. The second steel ball is arranged at one end of the positioning ball column close to the push rod component and abuts against the rod body of the push rod component.

[0012] As a further improvement of the present utility model, the push rod component includes a push rod body and a push rod end. The push rod end is arranged on the end face of the push rod body far away from the push handle. The push handle is screwed to the installation groove formed in the push rod body through a connecting screw. A plurality of annular grooves are linearly arranged on the outer part of the rod body of the push rod, and the opening shape of the annular grooves corresponds to that of the second steel ball.

[0013] As a further improvement of the present utility model, the syringe further includes a syringe tube head, and the syringe tube head is screwed to one end of the syringe tube body far away from the push handle.

[0014] As a further improvement of the present utility model, a fixing groove is formed between the syringe tube head and the push rod component, and the medicine bottle is clamped inside the fixing groove.

[0015] As a further improvement of the present utility model, the syringe tube head includes a tube head housing. A liquid injection cavity is arranged on the central axis of the tube head housing corresponding to the bottle mouth of the medicine bottle. A conical boss is arranged on the tube head housing along the liquid injection cavity, and the conical boss abuts against the silica gel soft plug arranged at the bottle mouth of the medicine bottle.

[0016] As a further improvement of the present utility model, a fixing snap ring component is further arranged on the movable sleeve. The fixing snap ring component includes a front fixing snap ring and a rear fixing snap ring. The front fixing snap ring is sleeved on the outer wall of the fixed sleeve and abuts against the end face of the movable sleeve close to the bottle pressing member. The rear fixing snap ring is sleeved on the outer wall of the movable sleeve and is used for fixing the handle.

[0017] The technical solution provided by the present utility model has the following advantages and effects compared with the prior art:

[0018] 1. In this application, an inner compression spring and an outer compression spring are designed, and their diameters are different. Given that the inner compression spring has greater tension characteristics compared to the outer compression spring, during the initial drug pushing, the movable sleeve will move backward under the action of an external force, prompting the positioning ball component to smoothly enter the small-diameter section area of the inner cavity of the movable sleeve. At this time, the first steel ball in the positioning ball component will closely fit the inner wall of the movable sleeve, while the second steel ball will be in close contact with the annular groove on the push rod. In this way, sufficient clamping force is generated to effectively control the injection speed. Among them, due to the design of compression springs with different diameters, the greater tension of the inner compression spring enables the movable sleeve to move smoothly and precisely during the drug pushing process, thus ensuring that the positioning ball component can accurately enter the predetermined position. In addition, through the close contact between the first steel ball and the inner wall of the movable sleeve, and the contact between the second steel ball and the annular groove of the push rod, an effective clamping mechanism is formed during the injection process in this application. This mechanism can not only effectively control the injection speed, avoid discomfort to patients caused by too fast or too slow injection speed, but also ensure that the accurate dose of the drug is injected into the patient's body, thereby improving the treatment effect.

[0019] 2. In this application, the conical boss of the tube head housing is in close contact with the silicone soft plug at the mouth of the medicine bottle. During the drug injection process, the thrust applied by the operator will cause the mouth of the medicine bottle to move towards the conical boss, and then the silicone soft plug at the front end of the medicine bottle will closely fit the conical boss on the syringe tube head. When the conical boss further penetrates into the inner cavity of the medicine bottle, an inner concave cavity space will be formed in the inner cavity of the medicine bottle. When the operator stops pushing the drug, the injection action stops, and then the push rod component is slightly withdrawn, the cavity will return to its original shape under the elastic action of the silicone soft plug, thereby forming a suction force towards the inside of the bottle inside the medicine bottle, effectively sucking the residual drug in the needle back into the bottle, so as to achieve the aspiration function. In addition, the aspiration function of this application can not only effectively avoid the residue of the drug inside the needle, reduce the risk of drug waste and pollution, but also ensure the hygiene and safety of the injection process. After each injection is completed, by simply withdrawing the push rod, the aspiration of the drug can be easily achieved, enabling the syringe to be reused and improving the usage efficiency. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is an isometric view of the utility model.

[0022] Figure 2 It is an isometric view of another angle of the present utility model.

[0023] Figure 3 It is the front view of the present utility model.

[0024] Figure 4 It is Figure 3 The sectional view along the cutting symbol A - A.

[0025] Figure 5 It is Figure 4 The partial enlarged view of area A in

[0026] In the figure: 1. Push handle; 2. Movable sleeve; 3. Syringe tube head; 301. Tube head shell; 302. Liquid injection cavity; 303. Boss; 4. Handle; 5. Connecting screw; 6. Syringe tube body; 7. Pusher component; 701. Pusher rod body; 702. Pusher end; 703. Installation groove; 704. Annular groove; 8. Bottle pressing part; 9. Fixed snap ring component; 901. Front fixed snap ring; 902. Rear fixed snap ring; 10. Fixed sleeve; 11. Inner compression spring; 12. Outer compression spring; 13. Positioning ball component; 1301. Positioning ball column; 1302. First steel ball; 1303. Second steel ball; 14. Fixed groove. Specific embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0029] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present application, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, in the description of the present application, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0031] In addition, in the description of the present application, if terms such as "horizontal" and "vertical" are used, it does not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected to" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] Embodiment:

[0034] A new type of syringe includes a syringe and a medicine bottle. The medicine bottle is detachably arranged inside the syringe. The syringe includes a syringe barrel 6. A push rod component 7 is arranged inside the syringe barrel 6. One end of the push rod component 7 is detachably connected to a push handle 1;

[0035] A fixing sleeve 10 is detachably connected to the end of the push rod component 7 close to the push handle 1. A bottle pressing member 8 is arranged on the outer wall of the push rod component 7. A movable sleeve 2 is arranged on the outer wall of the fixing sleeve 10. A first inner cavity is enclosed among the push rod component 7, the fixing sleeve 10 and the bottle pressing member 8. A second inner cavity is enclosed between the fixing sleeve 10 and the movable sleeve 2. An inner ring compression spring 11 is arranged in the first inner cavity. An outer ring compression spring 12 is arranged in the second inner cavity. A limiting groove is also formed in the part of the fixing sleeve 10 close to the push handle 1. A positioning ball component 13 for clamping the push rod component 7 is arranged inside the limiting groove;

[0036] The outer wall of the movable sleeve 2 is also provided with a handle 4 for cooperating with the push handle 1 to push and move.

[0037] It is explained that during the use of the liquid medicine bottle, by disassembling the connection between the liquid medicine bottle and the syringe, the liquid medicine bottle can be conveniently replaced or cleaned, ensuring the cleanliness and sterility of the liquid medicine bottle, thereby protecting the health of users. At the same time, the detachable design between the liquid medicine bottle and the syringe also enables the capacity of the liquid medicine bottle to be selected according to needs, thus meeting the requirements of different treatment scenarios.

[0038] Specifically, in the design of the push rod component 7, a structure of a fixed sleeve 10 and a movable sleeve 2 is adopted. Through the setting of the inner compression spring 11 and the outer compression spring 12, as well as the setting of the limit groove and the positioning ball component 13 on the fixed sleeve 10, the push rod component 7 can be more stable when pushing the liquid medicine, avoiding leakage or waste of the liquid medicine during the injection process. At the same time, it can ensure the accurate positioning of the push rod component 7 during the pushing process, avoiding inaccurate injection caused by the shaking or deviation of the push rod component 7.

[0039] Combined with the accompanying drawings of the specification Figures 1 - 5 The inner compression spring 11 is sleeved on the outer wall of the bottle pressing part 8 and abuts against the inner wall surfaces at both ends of the first inner cavity. The outer compression spring 12 is sleeved on the outer wall of the fixed sleeve 10 and abuts against the inner wall surfaces at both ends of the second inner cavity. The diameter of the inner compression spring 11 is smaller than that of the outer compression spring 12, and the tension of the inner compression spring 11 is greater than that of the outer compression spring 12.

[0040] It is explained that first, the inner compression spring 11 is sleeved on the outer wall of the bottle pressing part 8 and tightly abuts against the inner wall surfaces at both ends of the first inner cavity. This design enables the inner compression spring 11 to quickly respond when the bottle pressing part 8 is subjected to an inward compression force, providing sufficient support force for the bottle pressing part 8 to prevent it from being over-compressed. At the same time, the tension of the inner compression spring 11 is greater than that of the outer compression spring 12, ensuring that when a larger pressure needs to be applied, the inner compression spring 11 can play a role first, providing a stronger resilience force for the bottle pressing part 8 and the push rod component 7. The outer compression spring 12 is sleeved on the outer wall of the fixed sleeve 10 and contacts the inner wall surfaces at both ends of the second inner cavity. This layout enables the outer compression spring 12 to act as a second layer of guarantee when the bottle pressing part 8 is subjected to an external force, playing a role of buffering and stabilizing. When the inner compression spring 11 is compressed to a certain extent, the outer compression spring 12 starts to play a role, providing a more stable support for the bottle pressing part 8 through its lower tension and larger diameter, avoiding excessive fluctuations during the pressure change process.

[0041] Combined with the accompanying drawings of the specification Figures 1 - 5, the positioning ball component 13 includes a positioning ball column 1301, a first steel ball 1302 and a second steel ball 1303. The positioning ball column 1301 is arranged in the middle of the limiting groove. The first steel ball is arranged at one end of the positioning ball column 1301 close to the movable sleeve 2 and abuts against the inner wall surface of the movable sleeve 2. The second steel ball 1303 is arranged at one end of the positioning ball column 1301 close to the push rod component 7 and abuts against the rod body of the push rod component 7. The push rod component 7 includes a push rod body 701 and a push rod end 702. The push rod end 702 is arranged at the end face of the push rod body 701 far from the push handle 1. The push handle 1 is screwed to an installation groove 703 formed in the push rod body 701 through a connecting screw 5. A plurality of annular grooves 704 are linearly arranged on the outer part of the rod body of the push rod body 701, and the opening shape of the annular grooves 704 corresponds to that of the second steel ball 1303.

[0042] It should be noted that in the initial drug pushing stage, the movable sleeve 2 will move backward under the action of an external force, and then push the positioning ball component 13 to accurately enter the small-diameter section area of the inner cavity of the movable sleeve 2. During this process, the first steel ball 1302 in the positioning ball component 13 will closely fit the inner wall of the movable sleeve 2, while the second steel ball 1303 will be in close contact with the annular groove 704 on the push rod, generating sufficient clamping force in this way to effectively control the injection speed. It is worth mentioning that due to the design of compression springs with different diameters adopted by us, the greater tension of the inner compression spring 11 ensures the smooth and accurate movement of the movable sleeve 2 during the drug pushing process, thus ensuring that the positioning ball component 13 can accurately enter the predetermined position.

[0043] In addition, through the close abutment of the first steel ball 1302 with the inner wall of the movable sleeve 2 and the abutment of the second steel ball 1303 with the annular groove 704 of the push rod, an effective clamping mechanism is constructed in the injection process of this application. This mechanism can not only effectively control the injection speed, prevent discomfort caused to patients due to too fast or too slow injection, but also ensure that the drug can be injected into the patient's body according to the accurate dose, thereby improving the treatment effect and ensuring the safety and reliability of the medical process.

[0044] Combined with the attached drawings of the specification Figures 1 - 5, It is worth noting that the syringe further includes a syringe nozzle 3, which is screwed to one end of the syringe barrel 6 away from the push handle 1. A fixing groove 14 is formed between the syringe nozzle 3 and the push rod member 7, and the medicine bottle is snap-fitted inside the fixing groove 14. The syringe nozzle 3 includes a nozzle outer shell 301. A liquid injection cavity 302 is provided on the central axis of the nozzle outer shell 301 corresponding to the mouth of the medicine bottle. The nozzle outer shell 301 is provided with a conical boss 303 along the liquid injection cavity 302, and the conical boss 303 abuts against the silica gel soft plug provided at the mouth of the medicine bottle.

[0045] It should be noted that the conical boss 303 of the nozzle outer shell 301 is in close contact with the silica gel soft plug at the mouth of the medicine bottle. During the drug injection process, the thrust applied by the operator will cause the mouth of the medicine bottle to move towards the conical boss 303, and then the silica gel soft plug at the front end of the medicine bottle will closely fit on the conical boss 303 on the syringe nozzle 3. When the conical boss 303 further penetrates into the inner cavity of the medicine bottle, an inner concave cavity space will be formed in the inner cavity of the medicine bottle. When the operator stops pushing the medicine, the injection action is aborted, and then the push rod member 7 is slightly withdrawn, the cavity will return to its original shape under the elastic action of the silica gel soft plug, thereby forming a suction force towards the inside of the bottle inside the medicine bottle, effectively sucking the residual medicine in the needle back into the bottle, thus realizing the back suction function. In addition, the back suction function of the present application can not only effectively avoid the residual medicine in the needle, reduce the risk of medicine waste and pollution, but also ensure the hygiene and safety of the injection process. After each injection is completed, by simply withdrawing the push rod, the back suction of the medicine can be easily realized, so that the syringe can be reused, improving the use efficiency.

[0046] Further, it is worth noting that the design of the conical boss 303 of the present application makes its contact with the silica gel soft plug closer, thereby ensuring the stability and reliability of the medicine during transmission. At the same time, the shape of the conical boss 303 also helps to form a more uniform force distribution during the pushing process, avoiding problems such as medicine leakage or syringe damage caused by uneven force.

[0047] Combined with the specification drawings Figures 1 - 5 , a fixing snap ring member 9 is further provided on the movable sleeve 2. The fixing snap ring member 9 includes a front fixing snap ring 901 and a rear fixing snap ring 902. The front fixing snap ring 901 is sleeved on the outer wall of the fixing sleeve 10 and abuts against the end face of the movable sleeve 2 close to the bottle pressing member 8. The rear fixing snap ring 902 is sleeved on the outer wall of the movable sleeve 2 for fixing the handle 4.

[0048] It is explained that the handle 4 is sleeved on the outer wall of the movable sleeve 2, and is fixed for the first time, and the rear fixing collar 902 can fix the handle 4 for the second time, preventing the operator from slipping out of the handle 4 when pushing, thereby ensuring the stability and safety of the operation. In addition, the provision of the front fixing collar 901 further enhances the connection stability between the movable sleeve 2 and the bottle pressing member 8, ensuring that the movable sleeve 2 will not slip or shift when pressure is applied, thereby ensuring the normal operation of the entire device.

[0049] Specifically, the presence of the front fixed collar 901 enables the movable sleeve 2 to remain stable when subjected to pressure, avoiding operational errors caused by loosening of the movable sleeve 2, and greatly enhancing the service life of the entire device. Due to the presence of the fixed collar component 9, the connection between the handle 4 and the movable sleeve 2 is more secure, reducing wear and damage caused by frequent disassembly and assembly. At the same time, this design also enables the device to maintain structural integrity and stability when subjected to greater pressure, thereby ensuring accuracy and safety of operation.

[0050] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of syringe, comprising a syringe and a medicine liquid bottle, wherein the medicine liquid bottle is detachably arranged inside the syringe, and is characterized in that: The syringe includes a syringe barrel (6), inside which a push rod member (7) is provided, and one end of the push rod member (7) is detachably connected to a push handle (1). A fixing sleeve (10) is detachably connected to the end of the push rod member (7) close to the push handle (1). A bottle pressing member (8) is provided on the outer wall of the push rod member (7). A movable sleeve (2) is provided on the outer wall of the fixing sleeve (10). A first inner cavity is formed among the push rod member (7), the fixing sleeve (10) and the bottle pressing member (8). A second inner cavity is formed between the fixing sleeve (10) and the movable sleeve (2). An inner compression spring (11) is arranged in the first inner cavity, and an outer compression spring (12) is arranged in the second inner cavity. A limiting groove is further formed in the part of the fixing sleeve (10) close to the push handle (1), and a positioning ball member (13) for clamping the push rod member (7) is arranged in the limiting groove. A handle (4) for cooperating with the push handle (1) to move is further provided on the outer wall of the movable sleeve (2).

2. The novel syringe according to claim 1, wherein: The inner compression spring (11) is sleeved on the outer wall of the bottle pressing member (8) and abuts against the inner wall surfaces at both ends of the first inner cavity. The outer compression spring (12) is sleeved on the outer wall of the fixing sleeve (10) and abuts against the inner wall surfaces at both ends of the second inner cavity.

3. The novel syringe according to claim 2, characterized in that: The diameter of the inner compression spring (11) is smaller than that of the outer compression spring (12), and the tension of the inner compression spring (11) is greater than that of the outer compression spring (12).

4. The novel syringe according to claim 3, wherein: The positioning ball member (13) includes a positioning ball column (1301), a first steel ball (1302) and a second steel ball (1303). The positioning ball column (1301) is arranged in the middle of the limiting groove. The first steel ball (1302) is arranged at one end of the positioning ball column (1301) close to the movable sleeve (2) and abuts against the inner wall surface of the movable sleeve (2). The second steel ball (1303) is arranged at one end of the positioning ball column (1301) close to the push rod member (7) and abuts against the rod body of the push rod member (7).

5. The novel syringe according to claim 4, characterized in that: The push rod member (7) includes a push rod body (701) and a push rod end (702). The push rod end (702) is arranged on the end face of the push rod body (701) far from the push handle (1). The push handle (1) is screwed to an installation groove (703) formed in the push rod body (701) through a connecting screw (5). A plurality of annular grooves (704) are linearly arranged on the outer part of the rod body of the push rod body (701), and the shape of the annular grooves (704) corresponds to that of the second steel ball (1303).

6. The novel syringe according to any one of claims 1-5, characterized in that: The syringe further includes a syringe tube head (3), which is screwed to one end of the syringe barrel (6) far from the push handle (1).

7. The novel syringe according to claim 6, wherein: A fixing groove is formed between the syringe tube head (3) and the push rod member (7), and the medicine bottle is clamped inside the fixing groove.

8. The novel syringe according to claim 7, wherein: The syringe nozzle (3) includes a nozzle housing (301). An injection cavity (302) is provided on the central axis of the nozzle housing (301) corresponding to the mouth of the liquid medicine bottle. A conical boss (303) is provided on the nozzle housing (301) along the injection cavity (302), and the conical boss (303) abuts against the silica gel soft plug provided at the mouth of the liquid medicine bottle.

9. The novel syringe according to claim 8, wherein: A fixed snap ring component (9) is further provided on the movable sleeve (2). The fixed snap ring component (9) includes a front fixed snap ring (901) and a rear fixed snap ring (902). The front fixed snap ring (901) is sleeved on the outer wall of the fixed sleeve (10) and abuts against the end face of the movable sleeve (2) close to the bottle pressing member (8). The rear fixed snap ring (902) is sleeved on the outer wall of the movable sleeve (2) for fixing the handle (4).

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