syringe

Abstract

The application discloses an injector, which comprises a shell, a mounting channel extending in a first direction arranged at one end of the shell, an injection assembly arranged at a first end of the mounting channel, an energy storage assembly movably arranged in the first direction in the mounting channel, a first end of the energy storage assembly being adapted to be connected with the injection assembly to drive the injection assembly to inject or suck liquid, a second end of the energy storage assembly being provided with a first elastic member, the first elastic member being retractable in the first direction, a control assembly movably arranged between a first position and a second position in the shell, the control assembly being provided with a transmission part, in the case that the control assembly is in the first position, the transmission part is matched with the energy storage assembly to drive the energy storage assembly to compress the first elastic member in the first direction and make the injection assembly suck liquid, and in the case that the control assembly is in the second position, the transmission part is disengaged from the energy storage assembly, the first elastic member drives the energy storage assembly to make the injection assembly inject liquid.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, specifically relating to a syringe. Background Technology

[0002] Needle-free injectors eliminate the need for needles during drug injection. Utilizing high pressure, they create a fine jet of medication that instantly penetrates the skin to reach the subcutaneous layer. Existing needle-free injectors typically rely on external power sources like springs for propulsion. During use, the energy storage, liquid aspiration, and triggering processes require individual user intervention, resulting in cumbersome procedures, low injection efficiency, and the ability to administer only one injection after initial filling. Repeated refills of the injector for the same medication are time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0003] The purpose of this application is to provide a new technical solution for syringes that can at least solve the technical problem of cumbersome operation of existing syringes.

[0004] An embodiment of this application provides a syringe, comprising: a housing, one end of which has an installation channel extending along a first direction; an injection assembly disposed at the first end of the installation channel; an energy storage assembly movably disposed along the first direction in the installation channel, the first end of the energy storage assembly being adapted to connect with the injection assembly to drive the injection assembly to inject or aspirate liquid, the second end of the energy storage assembly having a first elastic element that is retractable in the first direction; and a control assembly movably disposed in the housing between a first position and a second position, the control assembly having a transmission portion; when the control assembly is in the first position, the transmission portion cooperates with the energy storage assembly to drive the energy storage assembly to compress the first elastic element in the first direction and cause the injection assembly to aspirate liquid; when the control assembly is in the second position, the transmission portion disengages from the energy storage assembly, and the first elastic element drives the energy storage assembly to cause the injection assembly to inject liquid.

[0005] According to one embodiment of this application, the injection assembly includes: a first cylinder disposed at a first end of an installation channel, the first cylinder having a liquid storage channel extending along a first direction; a nozzle disposed at the first end of the liquid storage channel, the nozzle being openable and closed; and a push rod, the first end of the push rod being disposed at the liquid storage channel, the push rod being movable along the first direction to inject or draw liquid into the first cylinder, and the second end of the push rod being adapted to connect to the first end of the energy storage assembly.

[0006] According to one embodiment of this application, the injection assembly further includes: a second cylinder, the second cylinder having a mounting cavity extending along the first direction, at least a portion of the first cylinder being disposed in the mounting cavity, a liquid storage cavity being defined between the outer peripheral surface of the first cylinder and the inner wall surface of the mounting cavity, an inlet channel being provided between the liquid storage cavity and a first end of the liquid storage channel, the inlet channel being switchable between a first state and a second state; when the first cylinder is injecting liquid, the nozzle is open, the inlet channel is in the first state, and the liquid storage cavity is disconnected from the liquid storage channel; when the first cylinder is drawing liquid, the nozzle is closed, the inlet channel is in the second state, and the liquid storage cavity is connected to the liquid storage channel.

[0007] According to one embodiment of this application, the injection assembly further includes: an elastic arm located within the liquid storage channel and disposed at a first end of the liquid inlet channel; the first end of the elastic arm is fixed, and the second end of the elastic arm is movable to allow the liquid inlet channel to switch between a first state and a second state; when the liquid inlet channel is in the first state, the second end of the elastic arm abuts against the inner wall surface of the liquid storage channel; when the liquid inlet channel is in the second state, the second end of the elastic arm is spaced apart from the inner wall surface of the liquid storage channel.

[0008] According to one embodiment of this application, the injection assembly further includes: a ball located within the liquid inlet channel; a limiting portion extending radially therefrom is provided at a first end of the liquid inlet channel near the liquid storage channel; the radial dimension of the second end of the liquid inlet channel is smaller than the radial dimension of the ball; the ball is movable within the liquid inlet channel along the axial direction of the liquid inlet channel; when the liquid inlet channel is in the first state, the ball abuts against the inner wall surface of the second end of the liquid inlet channel; when the liquid inlet channel is in the second state, the ball is spaced apart from the inner wall surface of the second end of the liquid inlet channel.

[0009] According to one embodiment of this application, the energy storage component includes: a transmission member movably disposed in the mounting channel along the first direction, the first end of the transmission member being adapted to engage with the second end of the push rod to drive the push rod to move along the first direction; and a movable member movably disposed in the mounting channel along the first direction, the first end of the movable member being disposed at the second end of the transmission member, the movable member having a mating portion adapted to the transmission part, and the first elastic member being disposed at the second end of the movable member.

[0010] According to one embodiment of this application, the mating portion is formed as a groove provided in the movable member.

[0011] According to one embodiment of this application, the second end of the push rod is provided with a slot, and the transmission component includes: a transmission column, which is disposed at the first end of the movable component, and the transmission column is used to push the push rod in the first direction; a plurality of spring arms, which are circumferentially spaced apart from the transmission column, the first end of the spring arm is disposed at the second end of the movable component, and the second end of the spring arm is provided with a locking portion, which locks into the slot.

[0012] According to one embodiment of this application, the syringe further includes a stop block disposed in the mounting channel and located at a first end of the movable member to limit the movement distance of the movable member.

[0013] According to one embodiment of this application, the stop block is provided with a through hole extending along the first direction, and a limiting section is provided near a portion of the movable member, through which a plurality of the spring arms pass, and the limiting section restricts each of the locking portions from moving away from the locking groove when the injection assembly aspirates liquid.

[0014] According to one embodiment of this application, the energy storage component is provided with a mating part, and the control component includes: a control member, the control member being rotatably disposed on the housing between a first position and a second position on a first axis extending about a second direction, and a transmission part disposed on the control member. When the control member is in the first position, the transmission part engages with the mating part, and when the control member is in the second position, the transmission part disengages from the mating part.

[0015] According to one embodiment of this application, the control element is formed as a trigger, which is pivotally disposed in the housing between a first position and a second position about a first axis. The transmission part is rotatably disposed on the trigger about a second axis extending about a second direction. The control assembly further includes a push rod disposed at a second end of the mounting channel, with a first end disposed within the mounting channel. When the trigger is in the first position, the transmission part engages with the mating part, and the push rod is spaced apart from the transmission part in the first direction. When the trigger is in the second position, the push rod engages with the transmission part to disengage the transmission part from the mating part.

[0016] According to one embodiment of this application, the first end of the push rod is formed as a guide surface inclined radially to the mounting channel, and the guide surface cooperates with the transmission part to disengage the transmission part from the cooperation part.

[0017] According to one embodiment of this application, the control component further includes: a second elastic member, at least a portion of which is disposed between the trigger and the transmission part, to provide the transmission part with a force that engages with the mating part.

[0018] According to one embodiment of this application, the control component further includes a third elastic element disposed between the trigger and the housing to provide a restoring force to the trigger from the second position to the first position.

[0019] According to the syringe of this application, the control component is movable between a first position and a second position. When the control component moves from the first position to the second position, it can drive the injection component to draw liquid and simultaneously drive the first elastic element to complete energy storage. When the control component moves to the second position, the transmission part of the control component automatically disengages from the energy storage component, and the energy storage component drives the injection component to inject liquid under the force of the first elastic element. Compared with the prior art, the syringe of this application integrates the energy storage and liquid drawing operations together. At the same time, when the control component moves to the second position, that is, after the injection component has drawn liquid, it automatically performs injection without any other triggering action, simplifying the operation process and making it convenient for users. Using the syringe of this application embodiment, multiple consecutive injections can be performed quickly, which can improve the user's work efficiency.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the internal structure of the syringe according to an embodiment of the present application when the control component is in the first position;

[0023] Figure 2 This is a schematic diagram of the internal structure of the syringe according to an embodiment of the present application when the control component is in the second position;

[0024] Figure 3 This is a schematic diagram of the internal structure of a syringe according to an embodiment of the present application when the injection component is not installed and the control component is in the first position;

[0025] Figure 4 This is a schematic diagram of the internal structure of a syringe according to an embodiment of the present application when the injection component is not installed and the control component is in the second position;

[0026] Figure 5This is a perspective view of the injection assembly of a syringe according to an embodiment of this application;

[0027] Figure 6 This is a cross-sectional view of the injection assembly of a syringe according to an embodiment of this application;

[0028] Figure 7 This is a partial structural diagram of the injection assembly of a syringe according to an embodiment of the present application during liquid injection;

[0029] Figure 8 This is a partial structural schematic diagram of the injection assembly of a syringe according to an embodiment of the present application during liquid aspiration;

[0030] Figure 9 This is a cross-sectional view of the injection assembly of a syringe according to another embodiment of this application;

[0031] Figure 10 This is a partial structural diagram of the injection assembly of a syringe according to another embodiment of this application during liquid injection;

[0032] Figure 11 This is a partial structural schematic diagram of the injection assembly of a syringe according to another embodiment of this application during liquid aspiration;

[0033] Figure 12 This is a partial structural schematic diagram of the injection assembly of a syringe according to another embodiment of this application;

[0034] Figure 13 This is a schematic diagram of the energy storage component of a syringe according to an embodiment of this application;

[0035] Figure 14 This is a partial structural schematic diagram of the control component of a syringe according to an embodiment of this application.

[0036] Figure label:

[0037] 100 syringes;

[0038] Housing 10; Mounting channel 11;

[0039] Injection component 20;

[0040] First cylinder 21; liquid storage channel 211; liquid inlet channel 212; limiting part 213;

[0041] Nozzle 22; Nozzle 221; Nozzle port 221a; Second check valve 222;

[0042] Push rod 23; Slot 231;

[0043] Second cylinder 24; Liquid storage chamber 241;

[0044] Elastic arm 25; sphere 26;

[0045] Rubber stopper 27; Slit 271;

[0046] Energy storage component 30; first elastic element 31;

[0047] Transmission component 32; transmission column 321; spring arm 322; locking part 322a;

[0048] Active part 33; Coordinating part 331;

[0049] Control component 40;

[0050] Control component 41; transmission part 411; connecting frame 412;

[0051] Top rod 42; guide surface 421;

[0052] Second elastic element 43;

[0053] Third elastic element 44; movable rod 441; linear spring 442; movable block 443;

[0054] Stop block 50;

[0055] Through hole 51; limiting section 511;

[0056] 60 isolation panels. Detailed Implementation

[0057] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0058] In the description of this application, it should 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," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] The syringe 100 according to an embodiment of this application is described in detail below with reference to the accompanying drawings.

[0061] like Figures 1 to 14 As shown, the syringe 100 according to an embodiment of this application includes: a housing 10, an injection assembly 20, an energy storage assembly 30, and a control assembly 40.

[0062] Specifically, one end of the housing 10 is provided with an installation channel 11 extending in a first direction. The injection assembly 20 is disposed at the first end of the installation channel 11. The energy storage assembly 30 is movably disposed in the installation channel 11 in the first direction. The first end of the energy storage assembly 30 is adapted to connect with the injection assembly 20 to drive the injection assembly 20 to inject or aspirate liquid. The second end of the energy storage assembly 30 is provided with a first elastic member 31, which is retractable in the first direction. The control assembly 40 is movably disposed in the housing 10 between a first position and a second position. The control assembly 40 is provided with a transmission part 411. When the control assembly 40 is in the first position, the transmission part 411 cooperates with the energy storage assembly 30 to drive the energy storage assembly 30 to compress the first elastic member 31 in the first direction and cause the injection assembly 20 to aspirate liquid. When the control assembly 40 is in the second position, the transmission part 411 disengages from the energy storage assembly 30, and the first elastic member 31 drives the energy storage assembly 30 to cause the injection assembly 20 to inject liquid.

[0063] In other words, such as Figures 1 to 14 As shown, the syringe 100 according to an embodiment of this application mainly comprises a housing 10, an injection assembly 20, an energy storage assembly 30, and a control assembly 40. One end of the housing 10 is provided with an installation channel 11, the axis of which is a first direction. The first end of the installation channel 11 is an open end. The injection assembly 20 is disposed at the first end of the installation channel 11 and can inject and aspirate liquid. The energy storage assembly 30 is movably disposed in the installation channel 11 along the first direction. The first end of the energy storage assembly 30 faces the injection assembly 20 and is connected to the injection assembly 20 to drive the injection assembly 20 to inject or aspirate liquid. When the energy storage assembly 30 moves toward the first end of the installation channel 11, the injection assembly 20 injects liquid; when the energy storage assembly 30 moves toward the second end of the installation channel 11, the injection assembly 20 injects liquid.

[0064] like Figures 1 to 4 As shown, the second end of the energy storage component 30 faces the second end of the mounting channel 11. The second end of the energy storage component 30 is provided with a first elastic member 31, which is extendable and retractable in a first direction. When the energy storage component 30 moves towards the second end of the mounting channel 11, the first elastic member 31 is compressed, allowing the storage of its elastic potential energy. The control component 40 is movably disposed on the housing 10 between the first and second positions. For example, the control component 40 is slidably or rotatably connected to the housing 10, which can be selected according to actual needs; the embodiments of this application will not elaborate further.

[0065] like Figures 1 to 4 As shown, the control component 40 is provided with a transmission part 411 adapted to the energy storage component 30. When the control component 40 is in the first position, the transmission part 411 cooperates with the energy storage component 30 so that when the control component 40 moves from the first position to the second position, it can drive the energy storage component 30 to move toward the second end of the mounting channel 11, so that the first elastic member 31 is compressed in the first direction, compressing the elastic potential energy of the first elastic member 31. When the control component 40 moves to the second position, that is, when the control component 40 is in the second position, the transmission part 411 disengages from the energy storage component 30, the elastic potential energy stored in the first elastic member 31 is released, the first elastic member 31 drives the energy storage component 30 to move toward the first end of the mounting channel 11, and the energy storage component 30 drives the injection component 20 to inject liquid.

[0066] Therefore, in the syringe 100 according to the present application embodiment, the control component 40 is movable between a first position and a second position. When the control component 40 moves from the first position to the second position, it can drive the injection component to draw liquid and simultaneously drive the first elastic element to complete energy storage. When the control component 40 moves to the second position, the transmission part 411 of the control component 40 automatically disengages from the energy storage component 30, and the energy storage component 30 drives the injection component 20 to inject liquid under the force of the first elastic element 31. Compared with the prior art, the syringe 100 of the present application embodiment integrates the operation steps of energy storage and liquid drawing together. At the same time, when the control component 40 moves to the second position, that is, after the injection component 20 has drawn liquid, it automatically performs injection without the need for other triggering actions, which simplifies the operation process and makes it convenient for users to use. Using the syringe 100 of the present application embodiment, multiple consecutive injections can be performed quickly, which can improve the user's work efficiency.

[0067] In some specific embodiments of this application, a handle is provided on one side of the housing 10, and the handle extends radially along the mounting channel 11.

[0068] In some examples of this application, the injection component 20 is detachably disposed at the first end of the mounting channel 11, for example by threaded connection, snap-fit, etc., so as to facilitate the replacement of different models of injection components 20, thereby allowing them to be replaced according to actual needs, such as according to the injection volume each time.

[0069] According to one embodiment of this application, the injection assembly 20 includes: a first cylinder 21, a nozzle 22, and a push rod 23. The first cylinder 21 is disposed at the first end of the mounting channel 11 and has a liquid storage channel 211 extending in a first direction. The nozzle 22 is disposed at the first end of the liquid storage channel 211 and can be opened and closed. The first end of the push rod 23 is disposed in the liquid storage channel 211 and can be moved in the first direction to inject or draw liquid into the first cylinder 21. The second end of the push rod 23 is adapted to be connected to the first end of the energy storage assembly 30.

[0070] Specifically, such as Figures 5 to 12 As shown, the injection assembly 20 mainly consists of a first cylinder 21, a nozzle 22, and a push rod 23. The first cylinder 21 is connected to the first end of the mounting channel 11 and is formed as a tubular structure extending along a first direction, so that the first cylinder 21 forms a liquid storage channel 211 extending along the first direction. The liquid storage channel 211 can be set according to the injection volume each time. The nozzle 22 is connected to the first end of the liquid storage channel 211 and can be opened and closed. The first end of the push rod 23 is movably disposed in the liquid storage channel 211 along the first direction to allow the first cylinder 21 to inject or aspirate liquid. The second end of the push rod 23 extends toward the second end of the mounting channel 11 and is adapted to connect with the first end of the energy storage assembly 30 so that the energy storage assembly 30 drives the push rod 23 to move along the first direction.

[0071] When the energy storage component 30 drives the push rod 23 to approach the second end of the installation channel 11 in the first direction, the nozzle 22 closes and the first cylinder 21 draws in liquid; when the energy storage component 30 drives the push rod 23 to move away from the second end of the installation channel 11 in the first direction, the nozzle 22 opens and the first cylinder 21 injects liquid, and the liquid is sprayed out from the nozzle 22.

[0072] In some examples of this application, the second end of the push rod 23 is detachably connected to the first end of the energy storage component 30, or the second end of the push rod 23 is fixedly connected to the first end of the energy storage component 30.

[0073] According to one embodiment of this application, the first end of the push rod 23 is provided with a rubber stopper 27, and the outer peripheral surface of the rubber stopper 27 is in contact with the inner wall surface of the liquid storage channel 211.

[0074] In some specific embodiments of this application, the injection assembly 20 further includes: a second cylinder 24, the second cylinder 24 having an installation cavity extending along a first direction, at least a portion of the first cylinder 21 being disposed in the installation cavity, a liquid storage cavity 241 defined between the outer peripheral surface of the first cylinder 21 and the inner wall surface of the installation cavity, an inlet channel 212 being provided between the liquid storage cavity 241 and the first end of the liquid storage channel 211, the inlet channel 212 being switchable between a first state and a second state; when the first cylinder 21 is injected with liquid, the nozzle 22 is opened, the inlet channel 212 is in the first state, and the liquid storage cavity 241 is disconnected from the liquid storage channel 211; when the first cylinder 21 is aspirated with liquid, the nozzle 22 is closed, the inlet channel 212 is in the second state, and the liquid storage cavity 241 is connected to the liquid storage channel 211.

[0075] In other words, such as Figures 5 to 12 As shown, the injection assembly 20 also includes a liquid storage component, which can be a second cylinder 24. The inner side of the second cylinder 24 is provided with an installation cavity, which extends along a first direction. The first end of the installation cavity is provided with a first through hole 51 that matches the first cylinder 21, and the second end of the installation cavity is provided with a second through hole 51 that matches the first cylinder 21. The first end of the first cylinder 21 is located in the first through hole 51, and the second end of the first cylinder 21 is located in the second through hole 51, so that the middle part of the first cylinder 21 is located in the installation cavity. The outer peripheral surface of the middle part of the first cylinder 21 and the inner wall surface of the installation cavity define a liquid storage cavity 241, through which the liquid can be stored.

[0076] like Figures 5 to 12 As shown, an inlet channel 212 is provided between the liquid storage chamber 241 and the first end of the liquid storage channel 211. The inlet channel 212 can be switched between a first state and a second state. The first state can be a closed state, and the second state can be a connected state. When the first end of the push rod 23 approaches the first end of the liquid storage channel 211, the first cylinder 21 is injected with liquid. At this time, the inlet channel 212 is closed, the liquid storage chamber 241 is disconnected from the liquid storage channel 211, the nozzle 22 is opened, the medicine is injected into the nozzle 22 and sprayed out from the nozzle 22 at high speed to complete the injection. When the first end of the push rod 23 moves away from the first end of the liquid storage channel 211, the first cylinder 21 draws in liquid. At this time, the nozzle 22 is closed, the inlet channel 212 is connected, the liquid storage chamber 241 is connected to the liquid storage channel 211, a negative pressure is generated in the liquid storage channel 211, and the medicine is drawn from the liquid storage chamber 241 into the liquid storage channel 211. After the liquid is drawn in, the inlet channel 212 is closed.

[0077] Therefore, according to the syringe 100 of this application embodiment, by setting a liquid storage chamber 241 and a switchable liquid inlet channel 212, the liquid storage chamber 241 can store the liquid medicine. After the first cylinder 21 is injected, the liquid medicine can be drawn from the liquid storage chamber 241 through the liquid inlet channel 212, which can improve the injection efficiency and the user experience. In addition, the liquid storage chamber 241 is set in the circumference of the first cylinder 21, which has a compact structure, occupies little space, and is convenient for users to store and use.

[0078] Furthermore, the second cylinder 24 is threaded to the first end of the mounting channel 11.

[0079] In some examples of this application, the liquid storage component is a flexible component, such as plastic or silicone bag. Using a flexible component can balance the air pressure in the liquid storage cavity 241, making it easier for the first cylinder 21 to absorb liquid.

[0080] According to one embodiment of this application, the outer side of the second cylinder 24 is provided with an injection port that communicates with the liquid storage chamber 241, so that the liquid storage chamber 241 can be filled with liquid medicine through the injection port.

[0081] In some specific embodiments of this application, the outer side of the second cylinder 24 is provided with an installation hole communicating with the liquid storage chamber 241, and the injection assembly 20 further includes: a rubber stopper 27, the rubber stopper 27 is provided in the installation hole, the liquid injection port is provided on the outer side of the rubber stopper 27, the rubber stopper 27 is provided with a slit 271 that passes through the axial direction of the installation hole, and the slit 271 is located inside the liquid injection port.

[0082] In other words, such as Figure 5 and Figure 6 As shown, the outer side of the second cylinder 24 is provided with a mounting hole extending radially therein, which communicates with the liquid storage chamber 241. A rubber stopper 27 is fixedly connected in the mounting hole. The outer side of the rubber stopper 27 is provided with a liquid injection port. The rubber stopper 27 is also provided with a slit 271 that passes through the mounting hole axially. The first end of the slit 271 faces the liquid storage chamber 241, the second end of the slit 271 faces the liquid injection port, and the slit 271 can be opened and closed.

[0083] When filling the liquid storage chamber 241 with the medicine, the slit 271 is in the open state, and the slit 271 connects the injection port with the liquid storage chamber 241; after filling the medicine, the slit 271 is in the closed state; when the air pressure in the liquid storage chamber 241 is lower than the external air pressure, the slit 271 is in the open state, and the external gas can enter the liquid storage chamber 241 through the slit 271 to balance the air pressure in the liquid storage chamber 241.

[0084] In some examples of this application, such as Figure 6 and Figure 9As shown, the liquid storage chamber 241 is provided with an isolation plate 60. The isolation plate 60 extends along the first direction and divides the liquid storage chamber 241 into two liquid storage spaces. The two liquid storage spaces are connected at the end of the liquid storage chamber 241 near the nozzle 22 to reduce the shaking of the liquid in the liquid storage chamber 241, so that the liquid can be stably drawn into the first cylinder 21.

[0085] In some specific embodiments of this application, a movable element 33 is provided inside the liquid inlet channel 212 or at one end of the liquid inlet channel 212, and the movable element 33 can control the liquid inlet channel 212 to switch between a first state and a second state.

[0086] According to one embodiment of this application, the movable member 33 is formed as a first one-way valve, which is disposed in the liquid inlet channel 212. The flow direction of the first one-way valve is from the liquid storage chamber 241 to the liquid storage channel 211. The first one-way valve has a movable valve diaphragm. When the first cylinder 21 is filled with liquid, the first one-way valve automatically closes under the positive pressure in the liquid storage channel 211, so that the liquid storage channel 211 is in a first state; when the first cylinder 21 draws liquid, the first one-way valve automatically opens under the negative pressure in the liquid storage channel 211, so that the liquid storage channel 211 is in a second state.

[0087] In this embodiment, the first check valve is a component that can be purchased separately, which facilitates the production and assembly of the injection assembly 20 and ensures the reliability of the injection assembly 20.

[0088] According to one embodiment of this application, the injection assembly 20 further includes: an elastic arm 25, which is located within the liquid storage channel 211 and disposed at the first end of the liquid inlet channel 212. The first end of the elastic arm 25 is fixed, and the second end of the elastic arm 25 is movable to allow the liquid inlet channel 212 to switch between a first state and a second state. When the liquid inlet channel 212 is in the first state, the second end of the elastic arm 25 abuts against the inner wall surface of the liquid storage channel 211. When the liquid inlet channel 212 is in the second state, the second end of the elastic arm 25 is spaced apart from the inner wall surface of the liquid storage channel 211.

[0089] Specifically, such as Figures 6 to 8As shown, an elastic arm 25 is provided inside the liquid storage channel 211. In this embodiment, the elastic arm 25 can be used as a movable part 33. The elastic arm 25 is located at the first end of the liquid inlet channel 212. The first end of the elastic arm 25 can be fixed on the inner wall of the liquid storage channel 211 or on the nozzle 22. The second end of the elastic arm 25 is movable in the radial direction of the liquid storage channel 211. When the first cylinder 21 is filled with liquid, the second end of the elastic arm 25 abuts against the inner wall of the liquid storage channel 211 under the positive pressure in the liquid storage channel 211, so that the elastic arm 25 closes the liquid inlet channel 212, and the liquid inlet channel 212 is in the first state; when the first cylinder 21 draws liquid, the second end of the elastic arm 25 separates from the inner wall of the liquid storage channel 211 under the negative pressure in the liquid storage channel 211, so that a gap is generated between the first end of the liquid inlet channel 212 and the elastic arm 25, and the liquid inlet channel 212 connects the liquid storage chamber 241 and the liquid storage channel 211, and the liquid inlet channel 212 is in the second state.

[0090] In some examples of this application, when the first cylinder 21 draws in liquid, a gap of 0.2 mm is generated between the first end of the liquid inlet channel 212 and the elastic arm 25.

[0091] In some specific embodiments of this application, the nozzle 22 includes: a nozzle 221 and a second one-way valve 222. The first end of the nozzle 221 has a channel extending along a first direction, and the second end of the nozzle 221 is provided with a nozzle 221a. The nozzle 221a is connected to the mounting channel 11. The second one-way valve 222 is provided in the mounting channel 11 and is connected to the first end of the liquid storage channel 211. The conduction direction of the second one-way valve 222 is towards the nozzle 221a.

[0092] Specifically, such as Figures 6 to 11 As shown, the nozzle 22 mainly consists of a nozzle 221 and a second one-way valve 222. The first end of the nozzle 221 has a channel extending in a first direction, and the second end of the nozzle 221 has a nozzle 221a communicating with the channel. The second one-way valve 222 is located in the channel and is connected to the first end of the liquid storage channel 211, such that the inlet of the second one-way valve 222 communicates with the first end of the liquid storage channel 211, and the outlet of the second one-way valve 222 faces the nozzle 221a. Furthermore, the axis of the outlet of the second one-way valve 222 coincides with the axis of the nozzle 221a, allowing the liquid flowing from the second one-way valve 222 to be directly sprayed from the nozzle 221a. When the injection assembly 20 draws liquid, the second one-way valve 222 is in a closed state; when the injection assembly 20 injects liquid, the second one-way valve 222 is in an open state, allowing the liquid to flow from the second one-way valve 222 to the nozzle 221a.

[0093] It should be noted that, in addition to the structure described above, the nozzle 22 can also be other structures found in existing syringes 100, which will not be elaborated upon in this application.

[0094] According to one embodiment of this application, the first end of the elastic arm 25 is integrally formed with the second one-way valve 222, which has a simple structure and is easy to manufacture and assemble.

[0095] In some examples of this application, the nozzle 221 is threadedly connected to the second barrel 24 of the injection assembly 20.

[0096] In some specific embodiments of this application, the elastic arm 25 is formed as a tubular structure extending along a first direction, and the first end of the elastic arm 25 is connected to the nozzle 22.

[0097] In other words, such as Figures 6 to 8 As shown, the elastic arm 25 is a tubular structure disposed within the liquid storage channel 211. The axis of the elastic arm 25 is the same as the axis of the liquid storage channel 211. The first end of the elastic arm 25 is connected to the nozzle 22, and the second end of the elastic arm 25 extends toward the side away from the nozzle 22. Under normal conditions, the outer circumferential surface of the elastic arm 25 is in contact with the liquid storage channel 211.

[0098] When the first cylinder 21 is filled with liquid, the liquid in the storage channel 211 exerts pressure on the inner wall of the elastic arm 25, causing the outer peripheral surface of the elastic arm 25 to abut against the inner wall of the storage channel 211, thus closing the inlet channel 212. When the first cylinder 21 draws liquid, the pressure in the storage channel 211 is less than the pressure in the storage chamber 241, forming a negative pressure. Under the action of the negative pressure in the storage channel 211, a gap is created between the outer peripheral surface of the elastic arm 25 and the inner wall of the storage channel 211, allowing the liquid to flow into the storage channel 211 from the gap between the outer peripheral surface of the elastic arm 25 and the inner wall of the storage channel 211.

[0099] In this embodiment, the elastic arm 25 is formed into a tubular structure. When the first cylinder 21 is injected with liquid, the pressure of the liquid in the liquid storage channel 211 on the elastic arm 25 is relatively large, which can improve the contact force between the elastic arm 25 and the inner wall surface of the liquid storage channel 211, and ensure the closing effect of the liquid inlet. This effectively prevents the liquid from flowing from the liquid storage channel 211 into the liquid storage cavity 241 during the injection process of the first cylinder 21, thus ensuring the reliability of the injection assembly 20.

[0100] In some specific embodiments of this application, the injection assembly 20 further includes: a ball 26, which is located within the liquid inlet channel 212. The first end of the liquid inlet channel 212 near the liquid storage channel 211 is provided with a limiting portion 213 extending radially therefrom. The radial dimension of the second end of the liquid inlet channel 212 is smaller than the radial dimension of the ball 26. The ball 26 is movable within the liquid inlet channel 212 along the axial direction of the liquid inlet channel 212. When the liquid inlet channel 212 is in the first state, the ball 26 abuts against the inner wall surface of the second end of the liquid inlet channel 212. When the liquid inlet channel 212 is in the second state, the ball 26 is spaced apart from the inner wall surface of the second end of the liquid inlet channel 212.

[0101] In other words, such as Figures 9 to 12 As shown, a ball 26 is provided inside the liquid inlet channel 212, and the ball 26 can move within the liquid inlet channel 212. In this embodiment, the ball 26 serves as a movable member 33. The first end of the liquid inlet channel 212 is provided with a limiting part 213 extending radially therefrom. For example, the limiting part 213 is formed as a rod extending radially along the liquid inlet channel 212, and the two ends of the rod are respectively connected to the first cylinder 21. The radial dimension of the second end of the liquid inlet channel 212 is smaller than the radial dimension of the ball 26, so that the ball 26 can move between the limiting part 213 and the second end of the liquid inlet hole.

[0102] It should be noted that the limiting part 213 can also be a mesh structure in addition to the structure described above, which can be determined according to actual needs, and will not be described in detail in this embodiment.

[0103] like Figure 10 and Figure 11 As shown, when the first cylinder 21 is filled with liquid, a positive pressure is generated in the liquid storage channel 211. Under the action of the positive pressure, the ball 26 moves to the second end of the liquid inlet channel 212 and blocks the opening of the second end of the liquid inlet channel 212, thus closing the liquid inlet. When the first cylinder 21 draws liquid, a negative pressure is generated in the liquid storage channel 211. Under the action of the negative pressure, the ball 26 moves to the first end of the liquid inlet channel 212 and stops against the limiting part 213, so that the medicine can flow into the liquid storage channel 211 from the gap between the ball 26 and the inner wall of the liquid inlet channel 212.

[0104] In some examples of this application, the surface of the sphere 26 is provided with an adhesive layer, which is a rubber layer or a silicone layer, to improve the sealing effect of the sphere 26 on the second end of the liquid inlet channel 212.

[0105] According to some examples of this application, the sphere 26 is a silicone sphere or a rubber sphere.

[0106] According to one embodiment of this application, the energy storage component 30 includes a transmission member 32 and a movable member 33. The transmission member 32 is movably disposed in the mounting channel 11 along a first direction. The first end of the transmission member 32 is adapted to engage with the second end of the push rod 23 to drive the push rod 23 to move along the first direction. The movable member 33 is movably disposed in the mounting channel 11 along the first direction. The first end of the movable member 33 is disposed at the second end of the transmission member 32. The movable member 33 is provided with a mating part 331 adapted to the transmission part 411. The first elastic member 31 is disposed at the second end of the movable member 33.

[0107] In other words, such as Figure 3 , Figure 4 and Figure 13As shown, the energy storage component 30 mainly includes a transmission component 32 and a movable component 33. The transmission component 32 is movably disposed in the mounting channel 11 along the first direction. The first end of the transmission component 32 faces the injection component 20. The first end of the transmission component 32 has a snap-fit ​​structure suitable for snapping with the push rod 23, so as to facilitate the quick connection between the transmission component 32 and the push rod 23, making the assembly of the syringe 100 more convenient.

[0108] like Figure 3 , Figure 4 and Figure 13 As shown, the movable member 33 can be generally formed as a columnar structure extending along the first direction. The movable member 33 is connected to the second end of the transmission member 32, and the first elastic member 31 is disposed between the second end of the movable member 33 and the second end of the mounting channel 11. The movable member 33 is movable in the first direction within the mounting channel 11, so that the movable member 33 can move synchronously with the transmission member 32 in the first direction. The movable member 33 is provided with a mating part 331 adapted to the transmission part 411. The mating part 331 can be a protruding structure or a groove structure, which can be determined according to the specific structure of the transmission part 411. The embodiments of this application will not be described in detail.

[0109] In some specific embodiments of this application, the mating part 331 is formed as a groove provided in the movable part 33.

[0110] Specifically, such as Figure 3 , Figure 4 and Figure 13 As shown, the movable part 33 has a groove on the first side in the third direction, and the groove extends along the first direction. In this embodiment, the third direction is the radial direction of the mounting channel 11, the groove is formed as a mating part 331, and the transmission part 411 is formed as a block that fits the groove. The structure is simple and easy to manufacture.

[0111] According to one embodiment of this application, the second end of the push rod 23 is provided with a slot 231, and the transmission member 32 includes: a transmission column 321 and a plurality of spring arms 322. The transmission column 321 is provided at the first end of the movable member 33 and is used to push the push rod 23 in a first direction. The plurality of spring arms 322 are circumferentially spaced apart from the transmission column 321. The first end of the spring arm 322 is provided at the second end of the movable member 33, and the second end of the spring arm 322 is provided with a locking part 322a, which is locked into the slot 231.

[0112] In other words, such as Figures 1 to 13As shown, a groove 231 is provided on the outer side of the second end of the push rod 23. The groove 231 can be an annular groove extending circumferentially along the push rod 23 to facilitate subsequent assembly. The transmission component 32 mainly consists of a transmission column 321 and at least two spring arms 322. The transmission column 321 is a columnar structure extending along a first direction. The first end of the transmission column 321 is a conical or flat structure. The second end of the transmission column 321 is connected to the movable component 33. The two spring arms 322 are arranged opposite each other in the radial direction of the transmission column 321. The first end of the spring arm 322 is connected to the second end of the movable component 33. The second end of the spring arm 322 is movable, and the second end of the spring arm 322 is provided with a locking part 322a extending toward the axis of the transmission column 321.

[0113] During installation, the second ends of the two spring arms 322 can be far apart from each other so that the second end of the push rod 23 can be inserted. After the push rod 23 moves to the set position, the second ends of the spring arms 322 move closer to each other under the action of their own elasticity, so that the locking part 322a automatically locks into the slot 231 to realize the connection between the push rod 23 and the transmission component 32.

[0114] In some examples of this application, the side of the latching part 322a away from the spring arm 322 is an arc-shaped concave surface. The arc-shaped concave surface can increase the contact area between the latching part 322a and the inner wall of the slot 231, thereby effectively preventing deformation of the latching part 322a and improving the reliability of the syringe 100.

[0115] In some specific embodiments of this application, the syringe 100 further includes a stop 50, which is disposed in the mounting channel 11 and located at the first end of the movable member 33 to limit the movement distance of the movable member 33.

[0116] In other words, such as Figures 1 to 4 As shown, a stop 50 is connected to the inner wall of the installation channel 11, and the stop 50 is located at the first end of the movable part 33. Thus, the movement distance of the movable part 33 can be limited by the stop 50, so that the movable part 33 can move within a set range.

[0117] According to one embodiment of this application, the stop 50 is provided with a through hole 51 extending in a first direction. A portion of the through hole 51 near the movable member 33 has a limiting section 511 through which a plurality of spring arms 322 pass. The limiting section 511 restricts each locking portion 322a from moving away from the slot 231 when the injection assembly 20 draws liquid.

[0118] Specifically, such as Figure 3As shown, the transmission component 32 includes two spring arms 322. When the locking part 322a is locked in the slot 231, the distance between the two locking parts 322a is d. The stop block 50 is formed as a column extending in the first direction. The outer periphery of the column is connected to the inner wall surface of the mounting channel 11. The column is provided with a through hole 51 extending in the first direction. The through hole 51 has a limiting section 511. The radial dimension of the limiting section 511 is less than d. The two spring arms 322 pass through the limiting section 511, and the outer surfaces of the two spring arms 322 are respectively attached to the inner wall surface of the limiting section 511. Thus, when the transmission component 32 moves toward the second end of the mounting channel 11, that is, when aspirating liquid, the limiting section 511 can restrict the opening of the spring arms 322, so that the locking part 322a will not move away from the slot 231, and the locking part 322a can be prevented from detaching from the slot 231, thus ensuring the reliability of the syringe 100.

[0119] In some examples of this application, the portion of the through hole 51 away from the movable part 33 has a connecting section with a radial dimension greater than that of the limiting section 511, and the connecting section is adapted to the injection assembly 20, which can be threadedly connected to the connecting section.

[0120] According to one embodiment of this application, the injection component 20 is threadedly connected to the stop 50.

[0121] In some specific embodiments of this application, the energy storage component 30 is provided with a mating part 331, and the control component 40 includes: a control member 41, the control member 41 being rotatably disposed on the housing 10 between a first position and a second position on a first axis extending about a second direction, and a transmission part 411 disposed on the control member 41. When the control member 41 is in the first position, the transmission part 411 is engaged with the mating part 331, and when the control member 41 is in the second position, the transmission part 411 is disengaged from the mating part 331.

[0122] In other words, such as Figure 3 , Figure 4 and Figure 13 As shown, the control assembly 40 includes at least one control member 41. The control member 41 is rotatably mounted on the housing 10 about a first axis extending about a second direction, allowing the control member 41 to move between a first position and a second position about the first axis. The second direction is radial to the mounting channel 11 and perpendicular to the third direction. The control member 41 is provided with a transmission part 411, and the energy storage assembly 30 is provided with a mating part 331 adapted to the transmission part 411. When the control member 41 is in the first position, the transmission part 411 engages with the mating part 331. When the control member 41 moves from the first position to the second position, the transmission part 411 remains engaged with the mating part 331. When the control member 41 moves to the second position, the transmission part 411 disengages from the mating part 331.

[0123] According to one embodiment of this application, the control member 41 is formed as a trigger, which is oscillatingly disposed in the housing 10 between a first position and a second position about a first axis. The transmission part 411 is rotatably disposed on the trigger about a second axis extending about a second direction. The control assembly 40 further includes a push rod 42, which is disposed at the second end of the mounting channel 11 and at the first end of the mounting channel 11. When the trigger is in the first position, the transmission part 411 engages with the mating part 331, and the push rod 42 is spaced apart from the transmission part 411 in the first direction. When the trigger is in the second position, the push rod 42 engages with the transmission part 411 to disengage the transmission part 411 from the mating part 331.

[0124] Specifically, such as Figure 3 , Figure 4 and Figure 14 As shown, the control element 41 is configured as a strip-shaped trigger. The housing 10 is provided with a first rotating shaft, the axis of the first rotating shaft coincides with the first axis, the trigger is connected to the first rotating shaft, and the trigger can swing around the first rotating shaft between a first position and a second position. The transmission part 411 is rotatably provided on the trigger about a second axis extending in a second direction, so that the transmission part 411 can switch between an engaged state and a disengaged state.

[0125] like Figure 3 and Figure 4 As shown, a push rod 42 is connected to the second end of the mounting channel 11. The first end of the push rod 42 extends axially along the mounting channel 11. The first elastic member 31 is formed as a spring that extends helically around the push rod 42. The first end of the spring abuts against the second end of the movable member 33, and the second end of the spring abuts against the second end of the push rod 42. When the trigger is in the first position, the transmission part 411 and the mating part 331 are in a mating state, and there is a certain distance between the first end of the push rod 42 and the transmission part 411 in the first direction. When the trigger moves to the second position, the transmission part 411 rotates around the second axis under the action of the first end of the push rod 42, and the transmission part 411 disengages from the mating part 331.

[0126] It should be noted that, in addition to the structure described above, the control member 41 can also be formed as an incomplete gear, such as a half gear. The teeth of the half gear can serve as the transmission part 411, and the mating part 331 is formed as a rack located on the movable member 33. The half gear meshes with the rack, and by rotating the half gear, the movable member 33 can be driven to move in the first direction. When the half gear rotates to a set angle, i.e., the second position, the teeth of the half gear disengage from the rack.

[0127] In some examples of this application, the first end of the push rod 42 is formed as a guide surface 421 inclined to the radial direction of the mounting channel 11, and the guide surface 421 cooperates with the transmission part 411 to disengage the transmission part 411 from the mating part 331.

[0128] Specifically, such as Figure 3 and Figure 4 As shown, the first end of the push rod 42 is formed as a guide surface 421 inclined to the radial direction of the mounting channel 11. The guide surface 421 can be parallel to the second direction. When the transmission part 411 abuts against the guide surface 421, the transmission part 411 can rotate around the second axis under the action of the guide surface 421, so that the transmission part 411 gradually disengages from the mating part 331. The structure is simple and easy to manufacture.

[0129] In some specific embodiments of this application, the control component 40 further includes a second elastic member 43, at least a portion of which is disposed between the trigger and the transmission part 411 to provide the transmission part 411 with a force that engages with the mating part 331.

[0130] In other words, such as Figure 3 and Figure 14 As shown, a second elastic element 43 is provided on one side of the trigger. The second elastic element 43 can be formed into a spring sheet structure. A part of the spring sheet is connected to the trigger, and the other part of the spring sheet is provided with a bent part. The inner side of the bent part abuts against the transmission part 411, thereby providing a certain elastic force to the transmission part 411. When the trigger is in the first position, the transmission part 411 can automatically cooperate with the mating part 331 to facilitate repeated injection by the syringe 100.

[0131] It should be noted that when one of the transmission part 411 and the mating part 331 is magnetic and the other can be attracted, the second elastic element 43 may not be provided. When the trigger is in the first position, the transmission part 411 engages with the mating part 331 under the action of the attraction force. The specific structure can be selected according to actual needs, and this embodiment does not impose any limitations.

[0132] In some specific embodiments of this application, the control component 40 further includes a third elastic element 44, which is disposed between the trigger and the housing 10 to provide a restoring force to the trigger from the second position to the first position.

[0133] Specifically, such as Figure 3 and Figure 4 As shown, a third elastic element 44 is provided between the trigger and the housing 10. The third elastic element 44 can be composed of a movable rod 441 and a linear spring 442. The end of the housing 10 facing the trigger is provided with a mounting hole extending in a first direction. The first end of the movable rod 441 is used to cooperate with the trigger. The second end of the movable rod 441 is movably provided in the mounting hole in the first direction. The first end of the linear spring 442 abuts against the second end of the movable rod 441. The second end of the linear spring 442 abuts against the inner wall surface of the mounting hole.

[0134] When the trigger moves from the first position to the second position, the trigger drives the movable rod 441 toward the mounting hole, which compresses the linear spring 442. When the trigger is not subjected to external force, the linear spring 442 drives the movable rod 441 away from the mounting hole, so that the movable rod 441 can drive the trigger to move from the second position to the second position, so as to facilitate repeated injection by the syringe 100.

[0135] According to one embodiment of this application, such as Figure 3 and Figure 4 As shown, the first end of the movable rod 441 is provided with a connecting post extending in the second direction. The trigger is provided with a connecting frame 412 on the side near the movable rod 441. The connecting post is movably disposed in the connecting frame 412. The third elastic member 44 also includes a movable block 443. At least a portion of the movable block 443 is movably disposed in the mounting hole. The first end of the linear spring 442 abuts against the movable block 443. The movable block 443 abuts against the outer side of the connecting frame 412, thereby effectively preventing the trigger from shaking and preventing the syringe 100 from leaking.

[0136] When the user does not operate the syringe 100 according to the embodiment of this application, the trigger is in a first position, and the transmission part 411 engages with the mating part 331.

[0137] like Figures 1 to 14 As shown, when the syringe 100 according to the embodiment of this application draws liquid, pressing the trigger can move the trigger from the first position to the second position. When the trigger moves from the first position to the second position, the transmission part 411 always cooperates with the mating part 331. Through the cooperation between the transmission part 411 and the mating part 331, the energy storage component 30 can be driven to move along the first direction toward the second end of the mounting channel 11. The first elastic member 31, the second elastic member 43 and the third elastic member 44 are deformed by force. At the same time, the energy storage component 30 drives the push rod 23 to move toward the second end of the mounting channel 11, so that a negative pressure is generated in the liquid storage channel 211. The liquid storage channel 211 draws liquid from the liquid storage chamber 241. At this time, the nozzle 22 is in the closed state, the liquid inlet channel 212 is in the second state, and the liquid storage chamber 241 is connected to the liquid storage channel 211.

[0138] like Figures 1 to 14As shown, when injecting liquid, the trigger of the syringe 100 according to the embodiment of this application moves to the second position. The transmission part 411 and the push rod 42 cooperate to disengage the transmission part 411 from the cooperation part 331. The energy storage component 30 moves toward the direction of the nozzle 22 under the elastic force of the first elastic member 31. When the energy storage component 30 moves, it drives the push rod 23 to move synchronously. When the push rod 23 moves toward the direction of the nozzle 22, positive pressure is generated in the liquid storage channel 211. At this time, the liquid inlet channel 212 is in the first state, the liquid storage chamber 241 is not connected to the liquid storage channel 211, the nozzle 22 is in the open state, and the liquid can be sprayed out at high speed from the nozzle 221a of the nozzle 22 to complete the injection.

[0139] like Figures 1 to 4 As shown, after the trigger is released, the trigger moves from the second position to the first position under the action of the third elastic member 44. When the trigger moves to the first position, the transmission part 411 re-engages with the mating part 331 under the action of the second elastic member 43.

[0140] In summary, the syringe 100 according to the embodiments of this application has a control component 40 that is movable between a first position and a second position. When the control component 40 moves from the first position to the second position, it can drive the injection component to draw liquid and simultaneously drive the first elastic member 31 to complete energy storage. When the control component 40 moves to the second position, the transmission part 411 of the control component 40 automatically disengages from the energy storage component 30, and the energy storage component 30 drives the injection component 20 to inject liquid under the force of the first elastic member 31. Compared with the prior art, the syringe 100 of the embodiments of this application integrates the operation steps of energy storage and liquid drawing together. At the same time, when the control component 40 moves to the second position, that is, after the injection component 20 has drawn liquid, it automatically injects without any other triggering action, which simplifies the operation process and makes it convenient for users. Using the syringe 100 of the embodiments of this application, multiple consecutive injections can be performed quickly, which can improve the user's work efficiency.

[0141] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0142] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A syringe, characterized in that, include: A housing (10), one end of which is provided with an installation channel (11) extending in a first direction; An injection assembly (20) is disposed at the first end of the mounting channel (11); An energy storage component (30) is movably disposed in the mounting channel (11) along the first direction. The first end of the energy storage component (30) is adapted to be connected to the injection component (20) to drive the injection component (20) to inject or aspirate liquid. The second end of the energy storage component (30) is provided with a first elastic element (31), which is retractable in the first direction. A control component (40) is movably disposed in the housing (10) between a first position and a second position, and the control component (40) is provided with a transmission part (411); When the control component (40) is in the first position, the transmission part (411) cooperates with the energy storage component (30) to drive the energy storage component (30) to compress the first elastic member (31) in the first direction and cause the injection component (20) to aspirate liquid; When the control component (40) is in the second position, the transmission part (411) disengages from the energy storage component (30), and the first elastic element (31) drives the energy storage component (30) to inject liquid into the injection component (20); When the control component moves from the first position to the second position, it can drive the injection component to draw liquid and simultaneously drive the first elastic element to complete energy storage. When the control component moves to the second position, the transmission part of the control component automatically disengages from the energy storage component, and the energy storage component drives the injection component to inject liquid under the force of the first elastic element.

2. The syringe according to claim 1, characterized in that, The injection assembly (20) includes: The first cylinder (21) is located at the first end of the installation channel (11), and the first cylinder (21) is provided with a liquid storage channel (211) that runs through the first direction; The nozzle (22) is located at the first end of the liquid storage channel (211) and can be opened and closed. A push rod (23) is provided at the first end of the liquid storage channel (211). The push rod (23) is movable along the first direction to inject or draw liquid into the first cylinder (21). The second end of the push rod (23) is adapted to be connected to the first end of the energy storage component (30).

3. The syringe according to claim 2, characterized in that, The injection assembly (20) also includes: The second cylinder (24) is provided with an installation cavity extending along the first direction. At least a portion of the first cylinder (21) is provided in the installation cavity. A liquid storage cavity (241) is defined between the outer peripheral surface of the first cylinder (21) and the inner wall surface of the installation cavity. An inlet channel (212) is provided between the liquid storage cavity (241) and the first end of the liquid storage channel (211). The inlet channel (212) can be switched between a first state and a second state. When the first cylinder (21) is filled with liquid, the nozzle (22) is opened, the liquid inlet channel (212) is in the first state, and the liquid storage chamber (241) is disconnected from the liquid storage channel (211). When the first cylinder (21) is sucked with liquid, the nozzle (22) is closed, the liquid inlet channel (212) is in the second state, and the liquid storage chamber (241) is connected to the liquid storage channel (211).

4. The syringe according to claim 3, characterized in that, The injection assembly (20) also includes: An elastic arm (25) is located inside the liquid storage channel (211) and is disposed at the first end of the liquid inlet channel (212). The first end of the elastic arm (25) is fixed and the second end of the elastic arm (25) is movable so that the liquid inlet channel (212) switches between the first state and the second state. When the liquid inlet channel (212) is in the first state, the second end of the elastic arm (25) abuts against the inner wall surface of the liquid storage channel (211). When the liquid inlet channel (212) is in the second state, the second end of the elastic arm (25) is spaced apart from the inner wall surface of the liquid storage channel (211).

5. The syringe according to claim 3, characterized in that, The injection assembly (20) also includes: A sphere (26) is located inside the liquid inlet channel (212). The liquid inlet channel (212) has a limiting part (213) extending radially at its first end near the liquid storage channel (211). The radial dimension of the second end of the liquid inlet channel (212) is smaller than the radial dimension of the sphere (26). The sphere (26) is movable within the liquid inlet channel (212) along the axial direction of the liquid inlet channel (212). When the liquid inlet channel (212) is in the first state, the ball (26) abuts against the inner wall surface of the second end of the liquid inlet channel (212). When the liquid inlet channel (212) is in the second state, the ball (26) is spaced apart from the inner wall surface of the second end of the liquid inlet channel (212).

6. The syringe according to claim 2, characterized in that, The energy storage component (30) includes: A transmission component (32) is movably disposed in the mounting channel (11) along the first direction. The first end of the transmission component (32) is adapted to engage with the second end of the push rod (23) to drive the push rod (23) to move along the first direction. The movable component (33) is movably disposed in the mounting channel (11) along the first direction. The first end of the movable component (33) is disposed at the second end of the transmission component (32). The movable component (33) is provided with a mating part (331) adapted to the transmission part (411). The first elastic member (31) is disposed at the second end of the movable component (33).

7. The syringe according to claim 6, characterized in that, The mating part (331) is formed as a groove provided in the movable part (33).

8. The syringe according to claim 6, characterized in that, The second end of the push rod (23) is provided with a slot (231), and the transmission component (32) includes: A transmission column (321) is provided at the first end of the movable member (33), and the transmission column (321) is used to push the push rod (23) in the first direction; Multiple spring arms (322) are circumferentially spaced apart from the transmission column (321). The first end of each spring arm (322) is located at the second end of the movable member (33). The second end of each spring arm (322) is provided with a locking part (322a), which is locked into the slot (231).

9. The syringe according to claim 8, characterized in that, Also includes: A stop (50) is provided in the mounting channel (11) and the stop (50) is located at the first end of the movable member (33) to limit the movement distance of the movable member (33).

10. The syringe according to claim 9, characterized in that, The stop (50) is provided with a through hole (51) extending along the first direction. A portion of the through hole (51) near the movable member (33) has a limiting section (511) through which a plurality of the spring arms (322) pass. The limiting section (511) restricts each of the latching portions (322a) from moving away from the slot (231) when the injection assembly (20) draws liquid.

11. The syringe according to claim 1, characterized in that, The energy storage component (30) is provided with a mating part (331), and the control component (40) includes: A control element (41) is rotatably disposed on the housing (10) between a first position and a second position, about a first axis extending in a second direction, and a transmission part (411) is disposed on the control element (41). When the control member (41) is in the first position, the transmission part (411) engages with the mating part (331), and when the control member (41) is in the second position, the transmission part (411) disengages from the mating part (331).

12. The syringe according to claim 11, characterized in that, The control element (41) is formed as a trigger, which is pivotally disposed in the housing (10) about the first axis between the first position and the second position. The transmission part (411) is rotatably disposed in the trigger about a second axis extending in the second direction. The control assembly (40) further includes: A top rod (42) is located at the second end of the mounting channel (11), and the first end of the top rod (42) is located inside the mounting channel (11). When the trigger is in the first position, the transmission part (411) engages with the mating part (331), and the push rod (42) is spaced apart from the transmission part (411) in the first direction. When the trigger is in the second position, the push rod (42) engages with the transmission part (411) to disengage the transmission part (411) from the mating part (331).

13. The syringe according to claim 12, characterized in that, The first end of the top rod (42) is formed as a guide surface (421) inclined to the radial direction of the mounting channel (11), and the guide surface (421) cooperates with the transmission part (411) to disengage the transmission part (411) from the mating part (331).

14. The syringe according to claim 12, characterized in that, The control component (40) further includes: A second elastic element (43) is provided at least partially between the trigger and the transmission part (411) to provide the transmission part (411) with a force that engages with the mating part (331).

15. The syringe according to claim 12, characterized in that, The control component (40) further includes: A third elastic element (44) is disposed between the trigger and the housing (10) to provide a restoring force to the trigger from the second position to the first position.

Images