Porous injector and porous injection device

Abstract

The utility model relates to a porous injector and a porous injection device. The multi-hole injector comprises a shell, a bubble generating assembly and a movable plate, the shell is provided with a first cavity and a second cavity, the first cavity is used for containing driving water, the second cavity is used for containing injection liquid, the shell is further provided with an injection port, and the injection port is formed in the side, away from the first cavity in the first direction, of the second cavity; the far end of the bubble generating assembly is located in the first cavity, and the bubble generating assembly is configured to generate bubbles at the far end; and the movable plate is arranged between the first cavity and the second cavity to isolate the first cavity from the second cavity, and the movable plate is in sliding fit with the shell in the first direction. The movable plate integrally moves when moving, stress distribution on the section, perpendicular to the first direction, of the second cavity is more uniform, the flow speed of jet flow sprayed out of the multiple micropores in the porous injection opening is uniform, and compared with a diaphragm structure, the movable plate has the longer service life.

Description

Technical Field

[0001] This application relates to the field of needle-free injection technology, and in particular to multi-hole syringes and multi-hole injection devices. Background Technology

[0002] Microjet injection is a needle-free, high-speed injection technology where the medication penetrates the skin solely through its own kinetic energy. A needle-free multi-orifice injector is a device based on microjet injection technology that uses multiple micro-orifices to generate a high-speed liquid flow that penetrates the skin, achieving precise medication delivery.

[0003] In related technologies, a multi-hole syringe uses a first chamber and a second chamber separated by a diaphragm within the housing. The expansion of air bubbles in the first chamber drives the diaphragm to deform, causing the injection fluid in the second chamber to be ejected from the injection port.

[0004] However, because the deformation is greater near the middle of the diaphragm and less near the edge, the injection fluid is ejected at different speeds from different injection ports. Utility Model Content

[0005] Therefore, it is necessary to provide a multi-hole syringe and a multi-hole injection device to address the issue of different injection rates at different injection ports.

[0006] A multi-hole syringe, comprising:

[0007] The housing has a first chamber and a second chamber. The first chamber is used to contain driving water, and the second chamber is used to contain injection liquid. The housing also has an injection port located on the side of the second chamber opposite to the first chamber along a first direction.

[0008] A bubble generating assembly, the distal end of which is located in the first chamber, the bubble generating assembly being configured to generate bubbles at the distal end;

[0009] A movable plate is disposed between the first chamber and the second chamber to isolate the first chamber and the second chamber, and the movable plate is slidably engaged with the housing along the first direction.

[0010] The bubble generating assembly creates bubbles in the first chamber. As the bubbles grow, they drive a movable plate towards the second chamber, compressing its volume and causing the injection fluid to flow out from the injection port. The movable plate moves as a single unit, resulting in a more uniform force distribution across the second chamber's cross-section perpendicular to the first direction. This ensures a uniform jet velocity from the multiple micro-holes at the porous injection port, and compared to a diaphragm structure, the movable plate has a longer service life.

[0011] In one embodiment, the first chamber has an arc-shaped surface on the side away from the movable plate along the first direction. The arc-shaped surface is curved on the side away from the movable plate so that the center of the virtual circle containing the arc-shaped surface is located in the first chamber. The bubble generating component is located between the arc-shaped surface and the movable plate.

[0012] And / or, the surface of the movable plate facing the first chamber is provided with a groove.

[0013] Compared to a flat surface, the curved surface increases the surface area of ​​the bubble formed in the first chamber that is furthest from the movable plate, which is beneficial for improving the utilization rate of the bubble expansion energy and avoiding a large reaction force on the end of the first chamber from the bubble expansion. Similar to the curved surface, the groove at one end of the movable plate expands the surface area of ​​the bubble that is furthest from the movable plate, which is beneficial for improving the utilization rate of the bubble expansion energy.

[0014] In one embodiment, the housing further includes:

[0015] The movable cavity is located between the first chamber and the second chamber and is in communication with the first chamber and the second chamber. The movable plate is disposed in the movable cavity and can be slidably disposed along the first direction.

[0016] The movable plate is located in the movable cavity, and the inner wall of the movable cavity provides guidance for the reciprocating motion of the movable plate, reducing the probability of malfunctions such as jamming.

[0017] In one embodiment, the multi-hole syringe further includes:

[0018] A reset element is disposed on at least one side of the movable plate along the first direction, and the reset element is configured to drive the movable plate to reset along the first direction.

[0019] A reset element is located on the side of the movable plate facing the first chamber. This reset element assists the movable plate in moving towards the second chamber while maintaining the pressure in the first chamber within a preset range, preventing excessive injection volume in the second chamber from increasing the pressure in the first chamber. The reset element's location on the side of the movable plate facing the second chamber facilitates the resetting of the movable plate after it moves towards the second chamber, keeping it within the preset range and allowing for injection after air bubbles re-form in the first chamber. Simultaneously, the automatic reset of the movable plate reduces the pressure in the second chamber, facilitating the replenishment of injection fluid and enabling repeated injections.

[0020] In one embodiment, the bubble generating component includes:

[0021] A positive electrode and a negative electrode are disposed in the first chamber at a distance from each other, and a voltage difference exists between the positive electrode and the negative electrode to generate bubbles.

[0022] This bubble-generating component utilizes the voltage difference between the positive and negative electrodes to drive the water to conduct electricity and generate plasma. This plasma absorbs energy linearly, leading to bubble formation. The method for generating bubbles is a dielectric breakdown method, which produces bubbles with a higher upper limit of expansion energy.

[0023] In one embodiment, there are multiple injection ports arranged in an array. Multiple injection ports are beneficial for improving injection efficiency.

[0024] In one embodiment, the injection port includes:

[0025] A guide portion, communicating with the second chamber, and whose diameter gradually decreases along a direction away from the second chamber; and

[0026] The liquid outlet is connected to the end of the guide portion away from the second chamber.

[0027] The injection solution is compressed through the guide section and dispensed through the smaller diameter dispensing section, which helps to reduce the dispensing diameter and increase the dispensing speed, thereby achieving micro-orifice injection.

[0028] In one embodiment, the housing is further provided with a fluid inlet, which communicates with the second chamber and is configured to replenish the second chamber with injection fluid.

[0029] This multi-hole syringe replenishes the injection fluid through the replenishment port, which facilitates repeated injections.

[0030] In one embodiment, the multi-hole syringe further includes:

[0031] A one-way valve is provided at the inlet, and the one-way valve is configured to open when the pressure in the second chamber is lower than the preset pressure, so as to replenish the injection solution into the second chamber.

[0032] This porous injection solution uses a one-way valve to control the opening and closing of the infusion port, enabling automatic infusion.

[0033] During operation, when the movable plate moves towards the second chamber, squeezing out the injection fluid, the air bubbles in the first chamber burst, reducing the pressure on the movable plate. The movable plate then moves towards the first chamber, further reducing the pressure in the second chamber. When the pressure in the second chamber drops below the preset pressure of the one-way valve, the one-way valve opens, and the replenishment port automatically replenishes the fluid. When the pressure in the second chamber returns to the preset pressure range, the bubble generating component applies a voltage difference to the positive and negative electrodes again, triggering bubble generation and thus performing a second injection. This process can be repeated to achieve repeated injections.

[0034] A porous injection device includes a porous syringe as described above. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a multi-hole syringe provided in one embodiment of this application.

[0036] Figure 2 This is a cross-sectional structural diagram of a multi-hole syringe provided in one embodiment of this application.

[0037] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100 - Shell; 110 - First chamber; 120 - Second chamber; 130 - Injection port; 131 - Guide section; 132 - Liquid outlet section; 140 - Arc-shaped surface; 150 - Movable cavity; 160 - Liquid replenishment port;

[0040] 200 - Bubble generating component; 210 - Positive electrode; 220 - Negative electrode;

[0041] 300 - Movable plate; 310 - Groove;

[0042] 400-Reset component

[0043] 500 - Check valve. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are 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.

[0046] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0050] See Figures 1-2 , Figure 1 A schematic diagram of the structure of a multi-hole syringe provided in one embodiment of this application is shown. Figure 2 A cross-sectional structural schematic diagram of a multi-hole syringe provided in one embodiment of this application is shown.

[0051] like Figures 1-2 As shown, this embodiment provides a multi-hole syringe, which includes a housing 100, a pair of bubble generating components 200, and a movable plate 300.

[0052] The shell 100 is a tubular structure, and its cross-sectional shape can be any shape, such as circular, square, or polygonal. The cross-sectional shape of the internal cavity of the shell 100 can be different from the shape of the external outline. For example, in this embodiment, the outer cross-sectional shape of the shell 100 is circular, and the inner cross-sectional shape is also circular.

[0053] The housing 100 has a first chamber 110 and a second chamber 120. The first chamber 110 is used to contain driving water, and the second chamber 120 is used to contain injection solution. A movable plate 300 is disposed between the first chamber 110 and the second chamber 120 to isolate the first chamber 110 and the second chamber 120, and the movable plate 300 is slidably engaged with the housing 100 along a first direction. The housing 100 also has an injection port 130, which is located on the side of the second chamber 120 opposite to the first chamber 110 along the first direction. The distal end of the bubble generating assembly 200 is located in the first chamber 110, and the bubble generating assembly 200 is configured to generate bubbles at the distal end. The first direction is parallel to the axial direction of the housing 100.

[0054] The bubble generating assembly 200 can form bubbles in the first chamber 110. As the bubbles grow, they drive the movable plate 300 to move towards the second chamber 120, compressing the volume of the second chamber 120 and causing the injection fluid in the second chamber 120 to flow out from the injection port 130. The movable plate 300 moves as a whole, resulting in a more uniform force distribution on the cross-section of the second chamber 120 perpendicular to the first direction. This makes the jet velocity from the multiple micro-holes on the porous injection port 130 uniform, and compared to a diaphragm structure, the movable plate 300 has a longer service life.

[0055] This multi-hole syringe utilizes the incompressibility of driving water. When bubbles are generated in the first chamber 110, since the volume of driving water remains unchanged, the generation of bubbles drives the movable plate 300 to move towards the second chamber 120, causing the injection liquid in the second chamber 120 to flow out from the injection port 130.

[0056] like Figure 2 As shown, in one embodiment, the side of the first chamber 110 facing away from the movable plate 300 along a first direction is an arc-shaped surface 140. The arc-shaped surface 140 bends away from the movable plate 300 so that the center of the virtual circle containing the arc-shaped surface 140 is located in the first chamber 110. The bubble generating assembly 200 is located between the arc-shaped surface 140 and the movable plate 300. Compared to a flat surface, the arc-shaped surface 140 increases the surface area of ​​the bubble formed in the first chamber 110 away from the movable plate 300, which is beneficial to improving the utilization rate of bubble expansion energy and avoiding a large reaction force on the end of the first chamber 110 for bubble expansion.

[0057] Optionally, the arc surface 140 is hemispherical. The hemispherical surface has a larger space to accommodate the bubble, providing space for the bubble to expand. This is beneficial for driving the movable plate 300 to move a greater distance, increasing the proportion of the injection liquid ejected from the second chamber 120, and improving the utilization rate of the bubble expansion energy.

[0058] In one embodiment, the surface of the movable plate 300 facing the first chamber 110 is provided with a groove 310. Similar to the arc-shaped surface 140, the groove 310 expands the surface of the bubble at one end of the movable plate 300, which is beneficial to improving the utilization rate of the bubble expansion energy.

[0059] Alternatively, the groove 310 may also be a groove 310 structure with an arcuate surface.

[0060] Optionally, the movable plate 300 is a plate-shaped structure with a certain thickness, and the inner wall of the outer peripheral shell 100 of the movable plate 300 is sealed to allow the movable plate 300 to be separated into a first chamber 110 and a second chamber 120 that are independent of each other.

[0061] like Figure 2As shown, in one embodiment, the housing 100 further includes a movable cavity 150, which is located between the first chamber 110 and the second chamber 120 and communicates with both chambers. A movable plate 300 is disposed in the movable cavity 150 and is slidable along a first direction. The movable plate 300, located in the movable cavity 150, utilizes the inner wall of the movable cavity 150 to guide its reciprocating motion, reducing the probability of malfunctions such as jamming.

[0062] Optionally, the diameter of the movable cavity 150 is larger than the diameter of the first chamber 110 and the diameter of the second chamber 120, so that there is a step facing the movable cavity 150 between the movable cavity 150 and the first chamber 110 and the second chamber 120. This step can provide a limit for the movement of the movable plate 300 and prevent the movable plate 300 from falling out.

[0063] Optionally, the movable cavity 150 includes a portion of the first cavity 110 and a portion of the second cavity 120, and is a cavity for the movement of the movable plate 300.

[0064] Optionally, the housing 100 can be a split structure, specifically, it can be split at either end of the movable cavity 150 along the first direction, with the housing 100 divided into two parts whose surfaces are sealed together. For example, the sealing connection can be achieved through adhesive bonding, sealing with a sealant, or any other method. With a split structure, the movable plate 300 is easier to assemble into the movable cavity 150.

[0065] The second chamber 120 below the movable plate 300 is a telescopic chamber, which allows the expansion energy of the bubbles in the first chamber 110 to be released towards the second chamber 120. The movable plate 300 can reciprocate towards the second chamber 120 to compress or release the second chamber 120.

[0066] Please continue reading Figure 2In one embodiment, the multi-hole syringe further includes a reset member 400, which is disposed on at least one side of the movable plate 300 along a first direction. The reset member 400 is configured to drive the movable plate 300 to reset along the first direction. The reset member 400 is disposed on the side of the movable plate 300 facing the first chamber 110. This reset member 400 can assist the movable plate 300 in moving towards the second chamber 120 while maintaining the pressure in the first chamber 110 within a preset range, preventing excessive injection volume in the second chamber 120 from increasing the pressure in the first chamber 110. Alternatively, the reset member 400 is disposed on the side of the movable plate 300 facing the second chamber 120. This reset member 400 facilitates driving the movable plate 300 to reset after it moves towards the second chamber 120, keeping the movable plate 300 within a preset range, facilitating injection after air bubbles re-form in the first chamber 110. At the same time, after the movable plate 300 automatically resets, the pressure in the second chamber 120 decreases, so as to replenish the injection fluid into the second chamber 120 and realize repeated injection.

[0067] Alternatively, a reset member 400 may be provided on both sides of the movable plate 300. The reset member 400 is located on the side of the movable plate 300 facing the first chamber 110. This reset member 400 assists the movable plate 300 in moving towards the second chamber 120, while maintaining the pressure in the first chamber 110 within a preset range, preventing excessive injection volume in the second chamber 120 that could increase the pressure in the first chamber 110. The reset member 400's location on the side of the movable plate 300 facing the second chamber 120 facilitates the resetting of the movable plate 300 after it moves towards the second chamber 120, keeping it within the preset range and allowing for injection after air bubbles re-form in the first chamber 110. Simultaneously, after the movable plate 300 automatically resets, the pressure in the second chamber 120 decreases, facilitating the replenishment of injection fluid and enabling repeated injections.

[0068] Specifically, one end of the reset member 400 located on the side facing the first chamber 110 abuts against the step of the movable cavity 150 and the first chamber 110, and the other end abuts against the movable plate 300. One end of the reset member 400 located on the side facing the second chamber 120 abuts against the step of the movable cavity 150 and the second chamber 120, and the other end abuts against the movable plate 300.

[0069] The reset component 400 is positioned using steps on both sides, which helps improve structural stability.

[0070] In one embodiment, the bubble generating assembly 200 includes a positive electrode 210 and a negative electrode 220, with the distal ends of the positive electrode 210 and the negative electrode 220 spaced apart within a first chamber 110. A voltage difference exists between the positive electrode 210 and the negative electrode 220 to generate bubbles. The bubble generating assembly 200 utilizes the voltage difference between the positive electrode 210 and the negative electrode 220 to drive the water to conduct electricity and generate plasma. This plasma absorbs energy linearly, resulting in bubble formation. This bubble generating method is a dielectric breakdown method, which produces bubbles with a higher upper limit of expansion energy.

[0071] Furthermore, compared to related technologies where 3μm band lasers can only generate bubbles at the surface of the driving water, resulting in a relatively fixed position and the expansion energy dissipating to both sides, the bubble generating component 200 in this embodiment can adjust the position of the bubble generated in the first chamber 110 by adjusting the positions of the positive electrode 210 and the negative electrode 220 along the first direction.

[0072] Meanwhile, the voltage difference between the positive electrode 210 and the negative electrode 220 of the bubble generating component 200 is adjustable. Increasing the voltage difference between the positive and negative electrodes increases the bubble expansion volume and speed, thereby increasing the jet velocity generated at the injection port 130 and thus increasing the injection depth. Conversely, decreasing the voltage difference reduces the bubble expansion volume and speed, thereby decreasing the jet velocity generated at the injection port 130 and thus reducing the injection depth. This bubble generating device allows for indirect control of the injection depth by controlling the input discharge voltage, meaning the injection depth of the multi-hole syringe is adjustable.

[0073] Optionally, the bubble generating component 200 can maintain a constant discharge energy, compress the discharge time of the positive electrode 210 and the negative electrode 220, and increase the bubble expansion rate.

[0074] For example, the positive electrode 210 and the negative electrode 220 are made of copper with a purity of 99.9%. The positive electrode 210 and the negative electrode 220 are cylindrical electrodes with a diameter of approximately 2 mm, and their lengths are 6-8 mm. Of course, the dimensions of the positive electrode 210 and the negative electrode 220 are merely one example and are not intended to limit this embodiment.

[0075] In one embodiment, there are multiple injection ports 130 arranged in an array. Multiple injection ports 130 are advantageous for improving injection efficiency. Simultaneously, in this embodiment, the bubble expansion energy of the bubble generating component 200 is sufficient to support simultaneous injection into multiple micropores.

[0076] like Figures 2-3As shown, optionally, the injection port 130 includes a guide portion 131 and a liquid outlet portion 132. The guide portion 131 communicates with the second chamber 120, and the diameter of the guide portion 131 gradually decreases along the direction away from the second chamber 120. The liquid outlet portion 132 communicates with the end of the guide portion 131 away from the second chamber 120. The injection liquid is compressed through the guide portion 131 and discharged through the smaller diameter liquid outlet portion 132, which helps to reduce the liquid outlet diameter and increase the liquid outlet speed, thereby realizing micro-orifice injection.

[0077] Optionally, the diameter of the dispensing section 132 is 0.15mm-0.25mm. This diameter range is beneficial for maintaining an appropriate injection volume and reducing pain during the injection process. If the diameter of the dispensing section 132 is too large, the pain during the injection process will increase. If the diameter of the dispensing section 132 is too small, the injection volume will be too small, the injection resistance will increase, and excessive energy will be required to induce the microjets, placing excessive demands on the power supply and related electronic components, making it difficult to achieve.

[0078] Optionally, the contraction angle of the tapered structure of the guide portion 131 is 13°-45°, preferably 30°.

[0079] The housing 100 is also provided with a replenishment port 160, which communicates with the second chamber 120 and is configured to replenish the injection fluid into the second chamber 120. This multi-hole syringe replenishes the injection fluid through the replenishment port 160, which facilitates repeated injections.

[0080] Optionally, the multi-hole syringe also includes a one-way valve 500, which is disposed at the replenishment port 160. The one-way valve 500 is configured to open when the pressure in the second chamber 120 is lower than a preset pressure, so as to replenish the injection fluid into the second chamber 120. The multi-hole injection fluid is controlled by the one-way valve 500 to open and close the replenishment port 160, thereby enabling automatic replenishment.

[0081] During operation, when the movable plate 300 moves towards the second chamber 120, squeezing out the injection solution in the second chamber 120, and the bubbles in the first chamber 110 burst, the pressure of the first chamber 110 on the movable plate 300 decreases, causing the movable plate 300 to move towards the first chamber 110. At this time, the pressure in the second chamber 120 decreases. When the pressure in the second chamber 120 decreases below the preset pressure of the one-way valve 500, the one-way valve 500 opens, and the replenishment port 160 automatically replenishes the solution. When the pressure in the second chamber 120 reaches the preset pressure range again, the bubble generating component 200 can again apply a voltage difference to the positive electrode 210 and the negative electrode 220 to trigger bubble generation, thereby performing a second injection. This process can be repeated to achieve repeated injection.

[0082] This embodiment also provides a porous injection device, which includes the above-mentioned porous syringe and a power source. The power source is electrically connected to the bubble generating component 200 of the porous syringe and is used to provide a voltage difference between the positive electrode 210 and the negative electrode 220 of the bubble generating component 200 to generate bubbles.

[0083] Optionally, the multi-hole injection device also includes a controller for controlling the voltage difference between the positive electrode 210 and the negative electrode 220, thereby adjusting the injection speed.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A multi-hole syringe, characterized by, The application relates to a multi-hole injector. The injector comprises a shell (100) provided with a first chamber (110) for containing driving water and a second chamber (120) for containing injection liquid, and an injection port (130) arranged on a side of the second chamber (120) away from the first chamber (110) in a first direction; A bubble generating assembly (200) is arranged in the first chamber (110) and configured to generate bubbles at a distal end thereof; A movable plate (300) is arranged between the first chamber (110) and the second chamber (120) to separate the first chamber (110) and the second chamber (120), and the movable plate (300) is slidingly arranged with the shell (100) in the first direction.

2. The multi-hole syringe of claim 1, wherein, A side of the first chamber (110) away from the movable plate (300) is an arc surface (140) curved away from the movable plate (300) so that a virtual circle where the arc surface (140) is located has a center in the first chamber (110), and the bubble generating assembly (200) is arranged between the arc surface (140) and the movable plate (300). The surface of the movable plate (300) facing the first chamber (110) is provided with a groove (310).

3. The multi-hole syringe of claim 1, wherein, The shell (100) further comprises: A movable cavity (150) is arranged between the first chamber (110) and the second chamber (120) and communicates with the first chamber (110) and the second chamber (120), and the movable plate (300) is arranged in the movable cavity (150) and can be slidingly arranged in the first direction.

4. The multi-hole syringe of claim 3, wherein, The multi-hole injector further comprises: A reset member (400) is arranged on at least one side of the movable plate (300) in the first direction, and the reset member (400) is configured to drive the movable plate (300) to reset in the first direction.

5. The multi-hole syringe of any of claims 1-4, wherein, The bubble generating assembly (200) comprises: A positive electrode (210) and a negative electrode (220) are arranged in the first chamber (110) with a distal end of the positive electrode (210) and a distal end of the negative electrode (220) being spaced apart, and a voltage difference exists between the positive electrode (210) and the negative electrode (220) to generate bubbles.

6. The multi-hole syringe of any of claims 1-4, wherein, The injection port (130) is provided in an array.

7. The multi-hole syringe of any of claims 1-4, wherein, The injection port (130) comprises: A guide portion (131) communicating with the second chamber (120) and gradually decreasing in diameter in a direction away from the second chamber (120); and An outlet portion (132) communicating with an end of the guide portion (131) away from the second chamber (120).

8. The multi-hole syringe of any of claims 1-4, wherein, The shell (100) is further provided with a liquid supplement port (160) in communication with the second chamber (120), the liquid supplement port (160) being configured to supplement the injection liquid into the second chamber (120).

9. The multi-hole syringe of claim 8, wherein, The multi-hole syringe further comprises: A one-way valve (500) is arranged at the liquid supplement port (160), the one-way valve (500) being configured to open when the pressure of the second chamber (120) is lower than a preset pressure, so as to supplement the injection liquid into the second chamber (120).

10. A multi-hole injection device characterized by, A multi-hole syringe as claimed in any one of claims 1-9.

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