Injection device using a magnetically driven motor and method of adjustment

Abstract

The application relates to a needle-free injection device using a magnetic drive motor and a regulating method, the device comprising: a shell; a needle-free injection head and a push rod arranged on one side of the shell; and a magnetic drive motor arranged on the inner side of the shell for injecting and sampling medicines, wherein the motor comprises a stator and a rotor arranged between front and rear end covers, the stator comprises a first hollow framework provided with a plurality of permanent magnets, and the outer side of the framework is wrapped with a magnetic shielding sleeve; the rotor comprises a second hollow framework arranged on the inner side of the first hollow framework, a plurality of groups of wires are arranged on the framework and separated by a partition plate, and a wire mounting groove and an isolation pipeline are arranged on the framework for the wires to pass through in sequence. The application provides a needle-free injection device capable of being quickly started, the device has the characteristics of miniaturization and high stability, and can realize mutual coordination of manual and automatic operations, and is suitable for injection scenes such as hormone injection, medical beauty injection and assisted reproductive injection.

Description

[0001] Divisional application

[0002] This application is based on application number CN202310441022.0, filed on April 23, 2023.

[0003] On [date], a divisional application was filed for Chinese invention patent application entitled "A needleless injection device and adjustment method using a magnetically driven motor". Technical Field

[0004] This invention relates to the field of medical devices, specifically to a needle-free injection device and adjustment method using a magnetically driven motor. Background Technology

[0005] Needle-free injection is an injection method that does not use traditional capillary needles. Instead of inserting a needle into the flesh, a needle-free injection actuator uses a mechanically stable drive module to generate pressure, which propels the medication into the patient's subcutaneous tissue. Needle-free injection does not create wounds during the injection process, thus reducing the pain and fear associated with needle pricks.

[0006] However, the application scenarios for existing needle-free injection technology are relatively limited. Current needle-free injection products are often suitable for short, rapid injection scenarios (such as a single vaccine injection), while most cosmetic procedures have relatively long injection cycles and require multiple, frequent injections (for example, depending on the individual's needs, a mesotherapy injection may take 40-50 minutes; another example is hyaluronic acid injections, which require approximately 30-60 minutes). Therefore, current traditional needle-free injection products still present many operational challenges when applied to cosmetic procedures with long injection cycles and frequent injections, such as difficulty in single-handed operation, difficulty in dosage adjustment, difficulty in heat dissipation, and cumbersome operation.

[0007] For example, in order to provide sufficient injection pressure to the needle-free injector, needle-free injection technology also places higher demands on the efficiency and stability of the drive module. (For example, patent publication number...)

[0008] Chinese invention patent application CN108452405A discloses an electromagnetic drive device for needle-free injection. While this electromagnetic drive device overcomes the shortcomings of existing technologies that rely on controlling current to achieve limiting, leading to low reliability, it also improves operational stability to some extent (e.g., achieving reliable needle limiting). However, it also presents challenges such as increased weight, size, and heat generation, which can increase the difficulty of operation for the user.

[0009] In addition, in order to facilitate manual operation, existing technologies have also attempted to design needle-free injectors in the shape of a pistol. However, the applicable scenarios for such pistol-shaped needle-free injectors are relatively limited, and they are usually more suitable for scenarios such as rapid vaccine injections targeting the shoulder area.

[0010] For example, Chinese invention patent application CN102652848A discloses an electromagnetically adjustable dose and injection depth continuous needle-free injector. The overall shape of the needle-free injector is designed as a pistol to facilitate operation.

[0011] However, because needle-free injectors should be kept perpendicular to the injection area during injection, the pistol-shaped design can actually be inconvenient for operators in injection procedures where the recipient needs to lie down (such as facial hyaluronic acid injections). This is understandable, as the operator's hand needs to be in a significantly bent position to ensure the needle is perpendicular to the recipient's face. In other words, this pistol-shaped injector is often suitable for rapid injection scenarios where the recipient is seated (such as administering a vaccine to the shoulder while seated).

[0012] Furthermore, the dosage adjustment of this needle-free injector is complex and difficult to precisely quantify. Specifically, when the operator needs to adjust the dosage, a wrench with a rotating internal hexagon (or other structure) must be inserted into the housing (11) through a small hole on the back of the housing and engaged with the internal hexagon (or other structure) on the iron core (12). Obviously, this adjustment method that requires the use of external tools is not convenient. Moreover, during the adjustment process, the operator needs to press the iron core so that the iron core overcomes the elasticity of the return spring (10) to reach the injection stop position. This manual pressure application process also makes it difficult to control the dosage value (especially for micro-volume drugs, such as 0.5ml adjustments).

[0013] For example, Chinese invention patent CN101690834A discloses an electromagnetically driven continuous needle-free injection system. The overall shape of this needle-free injection system is designed like a pistol. When applied to the medical aesthetics field, this pistol shape also has the problems of difficulty in one-handed use and inability to accurately adjust the dosage. Summary of the Invention

[0014] The purpose of this invention is to provide a needle-free injection device using a magnetically driven motor, which partially solves or alleviates the above-mentioned shortcomings in the prior art. That is, the needle-free injection device realizes a semi-automatic operation mode that allows for the coordinated operation of manual and automated operations, and is applicable to injection scenarios such as hormone injections, medical aesthetic injections, and assisted reproductive injections.

[0015] To solve the aforementioned technical problems, the present invention specifically adopts the following technical solution: a needle-free injection device using a magnetically driven motor, comprising:

[0016] case;

[0017] An injection module is disposed at the first end of the housing, the injection module comprising: a needleless injection head.

[0018] And a push rod capable of reciprocating along the cavity of the needleless injection head;

[0019] A magnetically driven motor is disposed inside the housing. The magnetically driven motor includes a front cover, a rear cover, and a stator assembly and a mover assembly disposed between the front and rear covers. The mover assembly is capable of reciprocating along the axial direction of the stator assembly, and synchronously drives the push rod to move.

[0020] The stator assembly includes: a first hollow frame connected to the front end cover and the rear end cover respectively, and a plurality of annular permanent magnets disposed inside the first hollow frame, the outer side of the first hollow frame being wrapped with an insulated sleeve.

[0021] The moving part assembly includes: a second hollow frame disposed inside the first hollow frame, the second hollow frame being provided with a plurality of insulating partitions, and a plurality of sets of wires being provided correspondingly between the insulating partitions; the second hollow frame also being provided with a wire mounting groove for guiding the wires; and the second end of the second hollow frame being provided with a plurality of isolation pipes; the wires passing through the rear end cover in sequence along the wire mounting groove and the isolation pipes.

[0022] And an electronic control module located near the rear end cover and connected to the magnetic drive motor.

[0023] In some embodiments, a plurality of first protrusions are provided on the inner side of the housing along the axial direction, and the adjacent sidewalls of adjacent first protrusions together form a first groove, and the first groove penetrates the first end cover and the second end cover on both sides of the housing, thereby forming a plurality of heat dissipation vents on the first end cover and the second end cover.

[0024] The first groove forms multiple heat dissipation ducts arranged along the circumferential direction of the magnetic drive motor. The heat generated by the magnetic drive motor during startup can be discharged along its circumferential direction and, guided by the heat dissipation ducts, is discharged through the heat dissipation vents on both sides of the housing.

[0025] In some embodiments, the moving part assembly includes: a sliding member disposed at a first end of the second hollow frame, the second hollow frame being slidably mounted inside the first hollow frame via the sliding member, and a second end of the sliding member being connected to the push rod; wherein, the moving part assembly further includes: a buffer member disposed on the outer periphery of the sliding member.

[0026] In some embodiments, the sliding component includes an annular slider connected to a first end of the second hollow frame, the annular slider having at least one wear-resistant ring on its outer side, and when the mover assembly is installed inside the magnetic drive motor via the annular slider, the mover assembly contacts the stator assembly via the wear-resistant ring.

[0027] In some embodiments, the cushioning component includes a shock-absorbing pad disposed between the front end cover and the sliding component.

[0028] In some embodiments, the buffer component includes: an elastic component disposed on the outer periphery of the second end of the sliding component; wherein, when the actuator assembly pushes the push rod under the action of gravity, the elastic component contacts the wall surface of the sliding component to limit the displacement of the sliding component.

[0029] In some embodiments, the front end cover includes: a first cover plate fixedly connected to the housing.

[0030] The first cover plate has an opening for the second end of the sliding component to pass through, and a second cover plate is formed by protruding outward along the edge of the opening. The hollow area of ​​the second cover plate provides a path for the push rod and the sliding component to reciprocate. The buffer component is disposed on the inner side of the first cover plate and / or the second cover plate.

[0031] In some embodiments, a cooperative operation area is provided near the second end of the housing, and a cooperative operation path is formed in the cooperative operation area along the axial direction of the housing. A start switch, a first adjustment module and a display module are arranged sequentially along the cooperative operation path, and the display module is located in the area corresponding to the electronic control module and is connected to the electronic control module.

[0032] In some embodiments, the magnetically driven motor further includes an iron core for increasing electromagnetic density.

[0033] The iron core is disposed inside the second hollow frame.

[0034] In some embodiments, the first hollow frame is made of a magnetically shielding material.

[0035] In some embodiments, the injection end of the needleless injection head is provided with an injection signal acquisition module.

[0036] The injection signal acquisition module is used to acquire the pressure signal of the injection end, and when the pressure signal is within a preset threshold, it sends a corresponding start signal to the electronic control module so that the liquid in the needleless injection head is injected.

[0037] In some embodiments, it further includes: a first adjustment module for adjusting the injection dose, the first adjustment module including: a first rotating part and a second rotating part meshing with the first rotating part, and the second rotating part can reciprocate along the axial direction under the drive of the first rotating part, thereby adjusting the movement range of the mover assembly during the reciprocating motion;

[0038] The first rotating part includes a first rotating member and a second rotating member that rotate coaxially. The first rotating member meshes with the second rotating part. The second rotating member is provided with a plurality of limiting protrusions along its axial direction, and the housing is provided with at least one limiting groove that cooperates with the limiting protrusions.

[0039] In some embodiments, the system further includes: a second adjustment module connected to the electronic control module, the second adjustment module comprising:

[0040] The image acquisition unit is configured to acquire at least one first facial image of the facial region when the needle-free injection device is in a vertical position and the injection module is aligned with the facial region of the injection target.

[0041] The dose selection unit is configured to select a target micro-dose corresponding to the facial region based on the first facial image, and generate a first adjustment signal based on the target micro-dose to be sent to the electronic control module.

[0042] In some embodiments, the system further includes a preprocessing module connected to the second adjustment module.

[0043] The preprocessing module is configured to acquire multiple second facial images of the injection subject, and perform skin texture detection on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information; determine the target micro-dose for the multiple facial regions based on the skin texture information; and add a marker to the second facial images based on the target micro-dose, the marker including: the target micro-dose;

[0044] Accordingly, the dose selection unit includes:

[0045] The first subunit is configured to compare and retrieve the first facial image with at least one second facial image; when at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained.

[0046] The second subunit is configured to determine the target microdose for the corresponding facial region based on the marking information.

[0047] In some embodiments, the system further includes a data management module connected to the second adjustment module.

[0048] It is configured to add a marker to the first facial image based on the actual injection dose, the marker including: the actual injection dose; and store the marked first facial image in an object database.

[0049] The present invention also provides a dosage adjustment method for a needle-free injection device for a magnetically driven motor.

[0050] Including the following steps:

[0051] S101 provides a needle-free injection device as described in any of the above embodiments;

[0052] S102 keeps the needle-free injection device in a vertical position and directs the needle-free injection head toward the facial area of ​​the injection target;

[0053] S103 acquires at least one first facial image of the facial region through the image acquisition unit;

[0054] S104 selects a target micro-dose corresponding to the facial region based on the first facial image, and generates a first adjustment signal based on the target micro-dose to send to the second adjustment module;

[0055] S105 The user or the second adjustment module adjusts the first adjustment module to the target position according to the first adjustment signal.

[0056] Beneficial technical effects:

[0057] This invention provides a small needle-free injection device suitable for one-handed operation. The device uses a cylindrical magnetic drive motor to control the push-pull operation of the injection module. The cylindrical magnetic drive motor employs a centralized circuit layout, resulting in a small size and fast start-up, enabling it to quickly push the injection module to inject minute doses of liquid within a short time.

[0058] Furthermore, to ensure the stable operation of the needle-free injection device, this invention employs a ring-shaped cooling air duct along the outer periphery of the cylindrical magnetic drive motor to efficiently guide and dissipate the localized high heat generated by the centralized circuitry. Simultaneously, structural optimizations such as buffer devices are used to improve the stability of the needle-free injection device during the injection process (avoiding or mitigating adverse vibrations caused by the high-speed impact of the motor). This needle-free injection device, with its efficient heat dissipation and high stability, is suitable for the long-term, repetitive injection needs in aesthetic medical procedures.

[0059] Furthermore, to address different injection needs (e.g., different micro-doses), a dosage adjustment device is designed to facilitate dosage adjustment. This device features a double-thread design (i.e., the dosage adjustment device includes: a thread for directly rotating the adjustment ring, and an arc protrusion for assisting the user in quantitative adjustment), allowing the user to easily adjust the dosage with one hand.

[0060] Furthermore, this invention also provides an automatically adjustable second adjustment module to complement the needle-free injection device, reducing the manual workload of the operator during prolonged injections. This second adjustment module can automatically adjust the dosage and inject the drug using image analysis, signal sensing, or other methods. For example, the second adjustment module can be configured as a robotic arm or work in conjunction with a robotic arm, automatically performing the injection under user supervision during cosmetic injections. When the injection is relatively difficult (such as for key areas like the eye area, or for injections on faces with complex skin conditions), the user can easily remove the needle-free injection device from the robotic arm and perform the injection manually. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. The elements or parts in the drawings are not necessarily drawn to scale. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0062] Figure 1 This is a schematic diagram of the structure of a needle-free injection device in an exemplary embodiment of the present invention;

[0063] Figure 2 This is a partial structural diagram of the first adjustment module in an exemplary embodiment of the present invention;

[0064] Figure 3 This is a schematic diagram of the first internal structure of the first adjustment module in an example embodiment of the present invention;

[0065] Figure 4 This is a schematic diagram of the second internal structure of the first adjustment module in an example embodiment of the present invention;

[0066] Figure 5 This is a cross-sectional schematic diagram of the magnetic drive module in an exemplary embodiment of the present invention;

[0067] Figure 6 This is a schematic diagram of the structure of the needle-free injection device in another exemplary embodiment of the present invention;

[0068] Figure 7 This is a schematic diagram of the first internal structure of the needle-free injection device in yet another exemplary embodiment of the present invention;

[0069] Figure 8 This is a schematic diagram of the second internal structure of the needle-free injection device in yet another exemplary embodiment of the present invention;

[0070] Figure 9 for Figure 7 A schematic cross-sectional view of the needleless injection device shown.

[0071] Figure 10 This is a partial structural diagram of the moving component in an exemplary embodiment of the present invention;

[0072] Figure 11 This is a schematic diagram of the shell structure in an exemplary embodiment of the present invention;

[0073] Figure 12 This is a schematic diagram of the front cover structure of the needle-free injection device in an exemplary embodiment of the present invention;

[0074] Figure 13 This is a partial structural diagram of the second adjustment module in an exemplary embodiment of the present invention;

[0075] Figure 14 This is a schematic diagram of the modules of an automated control system in an exemplary embodiment of the present invention;

[0076] Figure 15 This is a semi-automatic control method in an exemplary embodiment of the present invention.

[0077] Summary of attached labeling and identification:

[0078] 10 is the injection module; 20 is the housing; 21 is the start switch; 22 is the first adjustment module; 22-1 is the first rotating component; 22-2 is the second rotating component; 22-3 is the second rotating part; 22-4 is the buffer pad.

[0079] 23 is the mover assembly; 23-1 is the insulating partition; 23-2 is the wire mounting groove; 23-3 is the isolation pipe; 23-4 is the sliding component; 23-41 is the annular slider; 23-42 is the wear-resistant ring; 23-5 is the second hollow frame; 23-51 is the shock-absorbing pad; 23-52 is the support spring; 24 is the electrical control module; 25 is the stator assembly; 25-1 is the first hollow frame; 25-2 is the permanent magnet; 26-1 is the front end cover; 26-11 is the first cover plate.

[0080] 26-12 is the second cover plate; 26-2 is the rear end cover; 27-1 is the first protrusion; 27-2 is the first groove.

[0081] 31 is a fixed structure, 32 is the third rotating component, 33 is the drive unit; 40 is a computer, and 50 is a control system. Detailed Implementation

[0082] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0083] In this document, suffixes such as "module," "part," or "unit" used to denote elements are used only for the purpose of illustrative purposes and have no specific meaning in themselves. Therefore, "module,"

[0084] "Component" or "unit" can be used interchangeably.

[0085] In this document, the terms "upper," "lower," "inner," "outer," "front," "rear," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0086] In this document, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0087] In this document, "and / or" includes any and all combinations of one or more of the listed related items.

[0088] In this article, "multiple" means two or more, that is, it includes two, three, four, five, etc.

[0089] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0090] As used in this specification, the term "approximately" typically means + / - 5% of the stated value.

[0091] More typically, the value is + / -4%, more typically, the value is + / -3%, more typically, the value is + / -2%, even more typically, the value is + / -1%, even more typically, the value is + / -0.5%.

[0092] In this specification, certain embodiments may be disclosed in a range-bound format. It should be understood that this "range-bound" description is merely for convenience and brevity and should not be construed as a rigid limitation on the disclosed range. Therefore, the description of the range should be considered as having specifically disclosed all possible subranges and independent numerical values ​​within those ranges. For example, range The description should be considered as having specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as individual numbers within this range, such as 1, 2, 3, etc.

[0093] 4, 5, and 6. The above rules apply regardless of the breadth of the scope.

[0094] In this article, "facial image" refers to image information (such as skin photos) obtained by acquiring overall or partial images of the face of the injection subject. For example, it can be a full-face photo or a partial photo of areas such as the outer corners of the eyes, forehead, chin, bridge of the nose, lips, and cheekbones. The skin texture detection process involves binarizing the facial image and then detecting skin color based on the binarization result. For example, selectable skin texture detection methods include, but are not limited to: HSV color space H range filtering method, elliptical skin color detection model, YCrCb color space Cr component + Otsu's threshold segmentation algorithm, BGR color space gesture recognition, Cr, Cb range filtering method, etc.

[0095] In this article, "non-injection areas" refer to facial areas that should be avoided during the injection process. Taking hyaluronic acid injections as an example, areas such as the vicinity of the lips, temples, or nose should generally be avoided.

[0096] In this article, "actual injection dose" refers to the actual injection dose into the current facial area. It is generally the target micro-dose. Of course, in some embodiments, considering the special circumstances of the injection subject (skin care needs or skin type characteristics, etc.), the target micro-dose may be manually adjusted. In this case, the actual injection dose is recorded as the value after manual adjustment.

[0097] In this article, "vertical state" or "mutually perpendicular" refers to the plane in which the needle-free injection device (specifically the needle-free injection head) is perpendicular or nearly perpendicular to the plane of the injection area (such as the face) of the injection subject, thereby ensuring that the drug can pass smoothly through the skin of the injection subject.

[0098] In this article, "user" can refer to the staff performing the injection procedure (such as medical personnel, etc.).

[0099] It can also refer to a computer or other medical aesthetic system (such as a skin analyzer) connected to a needle-free injection device.

[0100] Example 1

[0101] like Figures 1-14 As shown, in order to meet the needs of long-term and high-frequency injections in medical aesthetic injection projects, the present invention provides a needle-free injection device using a magnetically driven motor.

[0102] like Figure 1As shown, the needle-free injection device includes: a housing 20, and an injection module 10 disposed at the first end of the housing. The injection module includes: a needle-free injection head, and a push rod capable of reciprocating along the cavity of the needle-free injection head. When the push rod moves at high speed along the injection direction, it can push the liquid (such as hormones, heparin, mesotherapy, or hyaluronic acid) inside the needle-free injection head to generate high pressure inside the needle-free injection head. The high-pressure drug can form an extremely fine water needle through the outlet end of the needle-free injection head. The instantaneous potential energy of the water needle will break through a certain thickness of the stratum corneum and then quickly diffuse in the dermal tissue of a fixed depth, thereby realizing non-invasive drug injection.

[0103] The magnetic drive motor (i.e., magnetic drive module) is disposed inside the housing. The magnetic drive motor includes a front cover, a rear cover, and a stator assembly (also called a stator) 25 and a mover assembly (also called a mover) 23 disposed between the front cover 26-1 and the rear cover 26-2. The mover assembly is capable of reciprocating along the axial direction of the stator assembly and driving the push rod to move synchronously. The stator assembly includes a first hollow frame 25-1 connected to the front cover and the rear cover respectively, and a plurality of annular permanent magnets 25-2 disposed inside the first hollow frame. The outer side of the hollow frame is wrapped with an anti-magnetic sleeve; the moving part assembly includes: a second hollow frame 23-5 disposed inside the first hollow frame, a plurality of insulating partitions 23-1 are disposed at intervals on the second hollow frame, and a plurality of wire groups are disposed correspondingly between the insulating partitions, a wire mounting groove 23-2 for guiding the wires is also disposed on the second hollow frame, a plurality of isolation pipes 23-3 are also disposed at the second end of the second hollow frame, and the wires pass through the rear end cover in sequence along the wire mounting groove and the isolation pipes; and an electronic control module 24 disposed near the rear end cover and connected to the magnetic drive motor.

[0104] In some embodiments, the multiple groups of conductors centrally arranged on the second hollow frame are connected in parallel, for example, three groups of enameled wires are connected in parallel and energized.

[0105] In this embodiment, in order to reduce the overall size of the needleless injection device, a multi-wire group arranged in parallel and centrally is used in conjunction with a permanent magnet to generate a sufficiently large electromagnetic force, thereby enabling the mover assembly to generate a large acceleration within a limited range of movement, thus applying a sufficiently large pressure to the agent to form an extremely fine water needle.

[0106] Furthermore, to avoid excessive localized heat generation from centrally deployed wiring harnesses, such as Figure 3As shown, in some embodiments, the inner side of the housing is provided with a plurality of first protrusions (also equivalent to reinforcing structures) 27-1 along the axial direction, and the adjacent sidewalls of adjacent first protrusions together form a first groove 27-2, and the first groove penetrates the first end cover and the second end cover on both sides of the housing, thereby forming a plurality of heat dissipation vents on the first end cover and the second end cover.

[0107] The first groove forms multiple heat dissipation ducts arranged circumferentially along the magnetic drive motor. Heat generated during startup can be dissipated along this circumferential direction and discharged through heat dissipation vents on both sides of the housing, guided by the heat dissipation ducts. Specifically, during the reciprocating movement of the mover assembly, it guides the air inside the housing to flow along its axial direction (i.e., the direction of movement of the mover). Heat concentrated near the mover assembly can also be dissipated outwards along the openings at both ends of the heat dissipation ducts by the airflow. Furthermore, because the heat dissipation ducts are designed to be circumferentially arranged and open at both ends of the housing, the operation of the heat dissipation ducts will not be interfered with when the operator or robotic arm holds the needle-free injection device for injection.

[0108] In some embodiments, the first groove is an arc-shaped groove, such as a semi-circular groove.

[0109] In some embodiments, such as Figure 8 As shown, the moving part assembly includes: a sliding member 23-4 disposed at the first end of the second hollow frame, the second hollow frame being slidably mounted on the inner side of the first hollow frame via the sliding member, and the second end of the sliding member 23-4 being connected to the push rod; wherein, the moving part assembly further includes: a buffer member disposed on the outer periphery of the sliding member.

[0110] Specifically, such as Figure 8 As shown, in some embodiments, sliding components 23-4 are provided at both ends of the second hollow frame. The sliding components are used to support the second hollow frame and install it inside the stator assembly (specifically the first hollow frame 25-1). The sliding components can drive the second hollow frame to slide / move relative to the first hollow frame.

[0111] In some embodiments, such as Figure 8 As shown, the sliding component located near the front end cover includes:

[0112] The annular slider 23-41 is connected to the first end of the second hollow skeleton. At least one wear-resistant ring 23-42 is provided on the outer side of the annular slider. When the moving part assembly is installed inside the magnetic drive motor through the annular slider, the moving part assembly contacts the stator assembly through the wear-resistant ring, thereby reducing the wear and vibration of the moving part assembly during frequent injection to a certain extent.

[0113] Specifically, in some embodiments, the first end of the annular slider is connected to the second hollow frame.

[0114] The second end of the annular slider (i.e. the second end of the sliding component) protrudes upward to form a boss (the boss is preferably set as a cylindrical structure), wherein the boss can pass through the opening provided on the first cover plate, and the boss is also connected to the push rod.

[0115] In some embodiments, such as Figure 7 As shown, the buffer component includes: a shock-absorbing pad 23-51 disposed between the front end cover and the sliding component. The shock-absorbing pad can reduce the vibration of the moving part assembly when it impacts the front end cover, so as to improve the working stability of the needleless injection device and facilitate one-handed operation by the operator.

[0116] In some embodiments, such as Figure 7 As shown, the buffer component includes: an elastic component (preferably a support spring 23-52) disposed on the outer periphery of the second end of the sliding component; wherein, when the moving part assembly pushes the push rod under the action of gravity, the elastic component contacts the wall surface of the sliding component to limit the displacement of the sliding component.

[0117] Understandably, for most cosmetic injection procedures, considering the injection time and the specific nature of the procedure, the recipient is usually in a lying position. Therefore, it is necessary to keep the needle-free injection head perpendicular to the recipient's face during the injection process. The shock-absorbing pad and support spring design in this embodiment can prevent leakage when the needle-free injection head is placed vertically.

[0118] Specifically, because the moving part assembly has a certain weight, when the entire needleless injection device is in a vertical position, the moving part assembly will fall under the influence of gravity, which will put pressure on the push rod and cause leakage from the needleless injection head. The support spring and shock-absorbing pad can reduce the falling speed and falling distance of the moving part assembly during the falling process, thereby reducing or mitigating the leakage phenomenon.

[0119] In some embodiments, the injection module further includes a reservoir (e.g., connected to a needleless injection head)

[0120] It can be a cartridge bottle (fixed to the outside of the housing by a mounting clip), and the needleless injection head can be a single-needle or multi-needle injection head. When the push rod retracts, the liquid inside the reservoir bottle is drawn into the needleless injection head. Both the reservoir bottle and the needleless injection head can be easily disassembled and replaced for easy replacement after each injection.

[0121] In some embodiments, the front cover and the rear cover are respectively engaged with the housing (preferably made of plastic) via a snap-fit ​​structure.

[0122] In some embodiments, the front cover 26-1 includes: a first cover plate 26-11 fixedly connected to the housing, the first cover plate having an opening for the second end of the sliding member (i.e., the end connected to the push rod) to pass through, and a second cover plate 26-12 protruding outward along the edge of the opening of the first cover plate, the hollow area of ​​the second cover plate providing a reciprocating movement path for the push rod and the sliding member, wherein the buffer member is disposed on the inner side of the first cover plate and / or the second cover plate.

[0123] In some embodiments, a cooperative operation area is provided near the second end of the housing, and a cooperative operation path is formed in the cooperative operation area along the axial direction of the housing. A start switch 21, a first adjustment module (also known as a dose adjustment module) and a display module are arranged sequentially along the cooperative operation path. The display module is located in the area corresponding to the electronic control module and is connected to the electronic control module.

[0124] In some embodiments, the display module may display one or more of the following information: the target microdose to be injected, the drug category (such as name), the injected dose, the remaining injection dose, the adjustment dose, etc.

[0125] In some embodiments, the magnetically driven motor further includes an iron core for increasing electromagnetic density.

[0126] The iron core is disposed inside the second hollow frame.

[0127] In some embodiments, the first hollow frame is made of a magnetically shielding material.

[0128] In some embodiments, the stator assembly housing is made of aluminum motor housing to isolate it from external magnetic fields.

[0129] In some embodiments, the front and rear end covers are also aluminum end covers, which also serve to isolate the external environment and the electrical control module at the rear of the motor from the magnetic field, ensuring the electromagnetic compatibility of the electrical equipment.

[0130] The needle-free injection device in this embodiment of the invention can be applied to the injection of drugs such as those used in medical aesthetics, hormones (e.g., insulin injection), and heparin required for assisted reproduction.

[0131] The following uses a hyaluronic acid injection as an example to further illustrate the technical solution and beneficial effects of this invention. Generally, the total injection volume of a hyaluronic acid injection is approximately 5-10 ml. However, this 5-10 ml volume needs to be injected multiple times with micro-dose doses to different points on the face (such as the forehead, chin, bridge of the nose, lips, etc.). Furthermore, considering the differences in skin condition (such as dullness, pigmentation, etc.) between different injection subjects or different facial areas of the same injection subject, the micro-dose injected at different facial points is also different. Therefore, during the hyaluronic acid injection process, it is often necessary to frequently inject different micro-dose doses (such as injecting only 0.5 ml or even less for sensitive areas) at various points on the injection subject's face. This frequent sampling and injection of the drug generates high heat inside the injection chamber and requires the operator to quickly and accurately adjust the injected micro-dose.

[0132] In some embodiments, the device further includes a second adjustment module connected to the electronic control module.

[0133] The second adjustment module includes:

[0134] The image acquisition unit is configured to acquire at least one first facial image (i.e., a partial photograph) of the facial region when the needle-free injection device is in a vertical position and the injection module is aligned with the facial region of the injection subject.

[0135] The dose selection unit is configured to select a target micro-dose corresponding to the facial region based on the first facial image, and generate a first adjustment signal based on the target micro-dose to be sent to the electronic control module.

[0136] For example, in some embodiments, the user can choose whether to turn on the image acquisition unit (specifically, the start signal can be sent to the image acquisition unit through the electronic control module).

[0137] In some embodiments, the system further includes a preprocessing module connected to the second adjustment module.

[0138] The preprocessing module is configured to acquire multiple second facial images of the injection subject, and perform skin texture detection on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information; determine the target micro-dose for the multiple facial regions based on the skin texture information; and add a marker to the second facial images based on the target micro-dose, the marker including: the target micro-dose;

[0139] Accordingly, the dose selection unit includes:

[0140] The first subunit is configured to compare and retrieve the first facial image with at least one second facial image; when at least one second facial image is found to match the first facial image (e.g., the photo texture matches), the tagging information of the second facial image is obtained;

[0141] The second subunit is configured to determine the target microdose for the corresponding facial region based on the marking information.

[0142] Further, in some embodiments, a first adjustment module 22 for adjusting the injection dosage includes: a first rotating part and a second rotating part 22-3 meshing with the first rotating part, wherein the second rotating part can reciprocate along the axial direction under the drive of the first rotating part, thereby adjusting the movement range of the moving part assembly during the reciprocating motion; wherein the first rotating part includes: a first rotating member 22-1 and a second rotating member 22-2 coaxially rotating, wherein...

[0143] The first rotating member meshes with the second rotating part. The second rotating member is provided with a plurality of limiting protrusions along its axial direction, and the housing is provided with at least one limiting groove that cooperates with the limiting protrusions.

[0144] In some embodiments, the system further includes a data management module connected to the second adjustment module.

[0145] It is configured to add a marker to the first facial image based on the actual injection dose, the marker including: the actual injection dose; and store the marked first facial image in an object database.

[0146] Example 2

[0147] The present invention also provides a dosage adjustment method for a needle-free injection device for a magnetically driven motor.

[0148] To facilitate automated drug injection, such as Figure 15 As shown, the method includes the following steps:

[0149] S101 provides a needle-free injection device as described in any of the embodiments;

[0150] S102 keeps the needle-free injection device in a vertical position and directs the needle-free injection head toward the facial area of ​​the injection target;

[0151] S103 acquires at least one first facial image of the facial region through the image acquisition unit;

[0152] S104 selects a target micro-dose corresponding to the facial region based on the first facial image, and generates a first adjustment signal based on the target micro-dose to send to the second adjustment module;

[0153] S105 The user or the second adjustment module adjusts the first adjustment module to the target position according to the first adjustment signal.

[0154] Specifically, in some embodiments, the second adjustment module can be communicatively connected to the electronic control module, or the second adjustment module and the electronic control module can be configured as the same module.

[0155] In some embodiments, the first adjustment module includes: a first rotating part and a second rotating part 22-3 meshing with the first rotating part, and the second rotating part can reciprocate along the axial direction under the drive of the first rotating part, thereby adjusting the movement range of the moving part assembly during the reciprocating motion; wherein, the first rotating part includes: a first rotating member 22-1 meshing with the second rotating part 22-3, and a second rotating member 22-2 rotating coaxially with the first rotating member 22-1, the first rotating member protruding outward through the housing opening, the second rotating member having a plurality of limiting protrusions arranged around the axial direction, and the housing having corresponding limiting grooves that cooperate with the limiting protrusions;

[0156] Accordingly, S105 includes:

[0157] S51 The second adjustment module determines the target rotation angle of the first rotating component based on the first adjustment signal;

[0158] S52 The second adjustment module adjusts the first rotating component to the target position according to the target rotation angle.

[0159] In some embodiments, the second adjustment module includes: a fixing structure 31 for fixing the needleless injection device, and an adjustment structure for adjusting the first rotating member, the adjustment structure including: a third rotating member 32 meshing with the first rotating member, and a driving unit 33 for driving the third rotating member 32 to rotate.

[0160] This invention provides a micro-dose adjustment method that allows for both manual and mechanical operation. This synergistic approach reduces the user's manual workload while ensuring efficiency and safety throughout the injection process (automated dose adjustment enables precise control of minute doses). Furthermore, when applied to real-world cosmetic injection procedures, this flexible manual / mechanical switching mode can adapt to the real-time operational needs of medical personnel.

[0161] For example, in some embodiments, the second adjustment module can be configured as a robotic arm structure (such as...). Figure 13 , 14 (As shown) or in conjunction with structures such as robotic arms, the device can automatically adjust the dosage and perform injections under the supervision of the user (such as a doctor) during cosmetic injections. When the injection is relatively difficult (such as when injecting into key areas such as the area near the eyes, or when injecting into individuals with relatively complex skin conditions), the cosmetic physician can also easily remove the needle-free injection device from the robotic arm and manually adjust the dosage and perform the injection.

[0162] In some embodiments, prior to S104, the method further includes:

[0163] Multiple second facial images of the injection subject are acquired, and skin texture detection is performed on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information;

[0164] The target micro-dose for the multiple facial areas is determined based on the skin type information;

[0165] The second facial image is marked according to the target micro-dose, the mark including the target micro-dose.

[0166] Preferably, in some embodiments, this method can be used in conjunction with an existing control system (such as a skin detection instrument connected to a computer). First, the control system performs skin quality analysis on the facial skin of the injection subject to determine the total injection dose and the target micro-dose for different areas. Then, the injection of each different area is completed sequentially according to the target micro-dose.

[0167] In some embodiments, S104 includes:

[0168] The first facial image is compared and retrieved with at least one pre-stored second facial image, wherein the second facial image is a pre-acquired facial image of the injection subject, and the second facial image is marked with the target micro-dose;

[0169] When at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained;

[0170] The target micro-dose for the corresponding facial region is determined based on the marking information.

[0171] In some embodiments, it also includes:

[0172] S106 Adds markers to the first facial image based on the actual injection dose, the markers including:

[0173] Actual injection dose;

[0174] S107 Store the marked first facial image in the object database.

[0175] In this embodiment of the invention, an automated dose adjustment design is adopted, which makes it easier to collect and manage real injection information (such as injection dose and injection area), thereby facilitating long-term monitoring and management of the injection information of the injection subject by the user.

[0176] Example 3

[0177] To enable precise adjustment of micro-dosage during frequent injections, this invention also provides a needle-free injection device with micro-adjustable dosage. This needle-free injection device is easy to adjust manually and can also be automated. Furthermore, the needle-free injection device may include any one or more of the same modules or structural components described in the above embodiments.

[0178] For example, in some preferred embodiments, the needle-free injection device includes: a housing, an injection module 10 disposed at a first end of the housing, the injection module including: a needle-free injection head, and a push rod capable of reciprocating along the cavity of the needle-free injection head;

[0179] The magnetic drive motor is disposed inside the housing. The magnetic drive motor includes a front cover, a rear cover, and a stator assembly 25 and a mover assembly 23 disposed between the front cover 26-1 and the rear cover 26-2. The mover assembly can reciprocate along the axial direction of the stator assembly and drive the push rod to move synchronously.

[0180] And a dose adjustment module 22 (also referred to as the first adjustment module 22) for adjusting the injection dose.

[0181] like Figure 3 As shown), the dosage adjustment module includes: a first rotating part (specifically, the first rotating part can be fixed on the rear end cover by a support pin), and a second rotating part 22-3 that meshes with the first rotating part (specifically, the rear end cover is provided with an installation opening for the second rotating part to pass through to achieve reciprocating motion), and the second rotating part can reciprocate along the axial direction under the drive of the first rotating part, thereby adjusting the movement range of the moving part assembly during the reciprocating motion.

[0182] Preferably, in some embodiments, such as Figure 3As shown, the first rotating part includes: a first rotating member 22-1 and a second rotating member 22-2 that rotate coaxially, wherein the first rotating member 22-1 meshes with the second rotating part 22-3, the second rotating member 22-2 is provided with a plurality of limiting protrusions along its axial direction, and the housing is provided with at least one limiting groove that cooperates with the limiting protrusions.

[0183] In some embodiments, the diameter of the first rotating member is larger than the diameter of the second rotating member.

[0184] Furthermore, a first opening is provided on the housing in the area corresponding to the first rotating part; the first opening includes: a mounting area for the first rotating member to protrude outward from the housing, and a viewing area for observing the rotation state of the second rotating member, wherein the second rotating member is disposed on the inner side of the housing.

[0185] In some embodiments, the size of the limiting protrusion is larger than the size of the rotating teeth of the first rotating member.

[0186] In some embodiments, the limiting protrusion is an arc protrusion (such as a semi-circular protrusion), and the limiting groove is correspondingly configured as an arc-shaped groove.

[0187] In this embodiment, a dosage adjustment mode based on dual rotating components is designed to achieve labor-saving and precise micro-dose adjustment. The first rotating component, which directly controls the range of motion, employs a small-sized design (specifically, multiple micro-teeth are evenly distributed on the outer circumference of the first rotating component) to achieve labor-saving operation. Simultaneously, the large-sized arc-shaped protrusion of the second transmission component assists the operator in precise positioning. Whenever the arc-shaped protrusion and an arc-shaped groove engage (i.e., the protrusion is fully engaged in the groove), the arc-shaped groove, in turn, applies resistance to the rotating component, limiting its further rotation. Therefore, the operator can judge whether the rotation is complete by feel (e.g., whether resistance is felt).

[0188] In some embodiments, the limiting protrusion is provided with a dosage mark.

[0189] In some embodiments, the first end of the second rotating part meshes with the first rotating part, and a buffer module is provided on the side of the second rotating part corresponding to the moving part assembly to reduce the vibration effect of the moving part assembly hitting the rear end cover during drug dispensing and improve the working stability of the needle-free injection device.

[0190] In some embodiments, such as Figure 4 As shown, the buffer module includes: buffer pads 22-4; wherein,

[0191] The second end of the second rotating part is provided with a first positioning groove or a first positioning protrusion, and the buffer pad is correspondingly provided with a second positioning protrusion or a second positioning groove.

[0192] For example, in some embodiments, the second end of the second rotating part is provided with a first positioning groove, and the positioning groove is a trapezoidal groove with a gradually decreasing opening (specifically, the cross-section of the positioning groove is set to be trapezoidal) to further limit the displacement of the buffer pad.

[0193] In some embodiments, the first rotating part is mounted on the rear end cover by a fixing member, and the second rotating part is also rotatably connected to the rear end cover (specifically, the rear end cover is provided with an opening, the second rotating part can rotate back and forth through the opening, and the second end of the second rotating part can also contact the iron core).

[0194] Specifically, in some embodiments, the second rotating part is connected to the rear end cover by threads.

[0195] In some embodiments, the electronic control module is disposed on the outside of the rear end cover and fixedly mounted on the rear end cover, wherein a reserved space is formed between the electronic control module and the rear end cover for installing the dose adjustment module.

[0196] The dose adjustment module is provided with a start switch and a display module on both sides, which are connected to the electronic control module; and the display module is provided on the housing in the area corresponding to the electronic control module. The start switch, the dose adjustment module and the display module are arranged on the same straight line.

[0197] The start switch, the dose adjustment module, and the display module deployed along the line together form a collaborative operation path.

[0198] In some embodiments, the injection end of the needleless injection head is provided with an injection signal acquisition module.

[0199] The injection signal acquisition module is used to acquire the pressure signal of the injection end, and when the pressure signal is within a preset threshold, it sends a corresponding start signal to the electronic control module so that the liquid in the needleless injection head is injected.

[0200] Furthermore, the dual rotating components in this invention can also achieve automated adjustment of micro-dose. The preferred embodiment that can automatically achieve micro-dose adjustment is described below.

[0201] In some embodiments, the needle-free injection device further includes: a second adjustment module connected to the electronic control module, the second adjustment module comprising:

[0202] The image acquisition unit is configured to acquire at least one first facial image of the facial region when the needle-free injection device is in a vertical position and the injection module is aligned with the facial region of the injection target.

[0203] The dose selection unit is configured to select a target micro-dose corresponding to the facial region based on the first facial image, and generate a first adjustment signal based on the target micro-dose to send to the electronic control module;

[0204] For example, in some embodiments, a miniature camera is disposed on the side of the housing near the needle-free injection head to capture skin photographs (i.e., a first facial image) of the facial area. After capturing the skin photograph, the target micro-dose for the current facial area is determined based on the skin condition of that area (e.g., the presence of pigmentation, dullness, or redness). The target micro-dose is then sent to the electronic control module, which automatically adjusts the first adjustment module accordingly (e.g., specifically by rotating the first rotating component, such as...). Figure 14 (As shown).

[0205] In some embodiments, the system further includes a preprocessing module connected to the second adjustment module.

[0206] The preprocessing module is configured to acquire multiple second facial images of the injection subject, and perform skin texture detection on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information (such as whether there are pigmentation marks, dullness, or redness, etc.); determine the target micro-dose for the multiple facial regions based on the skin texture information; and add a marker to the second facial images based on the target micro-dose, the marker including: the target micro-dose;

[0207] Accordingly, the dose selection unit includes:

[0208] The first subunit is configured to compare and retrieve the first facial image with at least one second facial image; when at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained.

[0209] The second subunit is configured to determine the target microdose for the corresponding facial region based on the marking information.

[0210] Preferably, the needle-free injection device in this embodiment can be operated using a combination of manual and automated methods. For example, for injection subjects with relatively uniform facial skin tone, a fully automated dosage adjustment method can be used. For injection subjects with uneven facial skin tone or other scenarios requiring higher precision in injection operation, a manual operation or a combination of manual and automated methods can be used.

[0211] In some embodiments, the system further includes a data management module connected to the second adjustment module.

[0212] The device is configured to add a marker to the first facial image based on the actual injection dose, the marker including the actual injection dose; and to store the marked first facial image in an object database. In this embodiment, the needle-free injection device can also collect data for each injection subject to facilitate the management of treatment or injection information for the injection subject.

[0213] In some embodiments, the second adjustment module may include: a robotic arm for grasping the needle-free injection device (specifically, such as...). Figure 13 As shown, the partial structure of the robotic arm can be set as a fixed structure 31, wherein the fixed structure 31 can be further assembled with a mobile actuator that moves in space along a user-specified direction, thereby driving the needleless injection device to face different injection areas of the injection object.

[0214] Specifically, in some embodiments, the needle-free injection device of the present invention can be directly installed on an existing injection system or injection device. For example, the needle-free injection device of the present invention can directly replace the hyaluronic acid injection needle part in a prior art hyaluronic acid injection instrument.

[0215] Example 4

[0216] Based on the needle-free injection device in the above embodiments, the present invention provides a micro-dose automated adjustment method, the method comprising the steps of:

[0217] S201 keeps the needle-free injection device in a vertical position and directs the needle-free injection head toward the area to be injected (such as the face, scalp, or other areas).

[0218] S202 acquires at least one first facial image of the facial region through the image acquisition unit;

[0219] S203 uses the dose selection unit to select a target micro-dose corresponding to the facial region based on the first facial image;

[0220] S204 and generates a first adjustment signal based on the target micro-dose to send to the second adjustment module;

[0221] S205 The user or the second adjustment module adjusts the first adjustment module to the target position according to the first adjustment signal.

[0222] Accordingly, S205 includes:

[0223] S51 The second adjustment module determines the target rotation angle of the first rotating component based on the first adjustment signal;

[0224] S52 The second adjustment module adjusts the first rotating component to the target position according to the target rotation angle.

[0225] In some embodiments, the second adjustment module includes: a fixing structure 31 for fixing the needleless injection device, and an adjustment structure for adjusting the first rotating member, the adjustment structure including: a third rotating member 32 meshing with the first rotating member, and a driving unit 33 for driving the third rotating member 32 to rotate.

[0226] This invention provides a micro-dose adjustment method that combines manual and mechanical operation. This synergistic nature of manual and mechanical operation reduces the user's manual workload while flexibly adapting to real-time operation requirements.

[0227] For example, in some embodiments, the second adjustment module can be configured as a robotic arm structure (such as...). Figure 13 , 14 (As shown) or in conjunction with structures such as robotic arms, the device can automatically adjust the dosage and perform injections under the supervision of the user (such as a doctor) during cosmetic injections. When the injection is relatively difficult (such as when injecting into key areas such as the area near the eyes, or when injecting into individuals with relatively complex skin conditions), the cosmetic physician can also easily remove the needle-free injection device from the robotic arm and manually adjust the dosage and perform the injection.

[0228] In some embodiments, prior to S204, the method further includes:

[0229] Multiple second facial images of the injection subject are acquired, and skin texture detection is performed on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information;

[0230] The target micro-dose for the multiple facial areas is determined based on the skin type information;

[0231] The second facial image is marked according to the target micro-dose, the mark including the target micro-dose.

[0232] Preferably, in some embodiments, this method can be used in conjunction with an existing control system (such as a skin detection instrument connected to a computer). First, the control system performs skin quality analysis on the facial skin of the injection subject to determine the total injection dose and the target micro-dose for different areas. Then, the injection of each different area is completed sequentially according to the target micro-dose.

[0233] In some embodiments, S204 includes:

[0234] The first facial image is compared and retrieved with at least one pre-stored second facial image, wherein the second facial image is a pre-acquired facial image of the injection subject, and the second facial image is marked with the target micro-dose;

[0235] When at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained;

[0236] The target micro-dose for the corresponding facial region is determined based on the marking information.

[0237] In some embodiments, it also includes:

[0238] S206 Adds markers to the first facial image based on the actual injection dose, the markers including:

[0239] Actual injection dose;

[0240] S207 Stores the marked first facial image into the object database.

[0241] In this embodiment of the invention, an automated dose adjustment design is adopted, which makes it easier to collect and manage real injection information (such as injection dose and injection area), thereby facilitating long-term monitoring and management of the injection information of the injection subject by the user.

[0242] Example 5

[0243] In some embodiments, the present invention also provides another micro-adjustable needleless injection device, which includes a housing and an injection module 10 disposed at a first end of the housing. The injection module includes a needleless injection head and a push rod capable of reciprocating along the cavity of the needleless injection head.

[0244] A magnetic drive module is disposed inside the housing. The magnetic drive module includes a front cover, a rear cover, and a stator assembly 25 and a mover assembly 23 disposed between the front cover 26-1 and the rear cover 26-2. The mover assembly is capable of reciprocating along the axial direction of the stator assembly, and synchronously drives the push rod to move.

[0245] The stator assembly includes: a first hollow frame 25-1 connected to the front end cover and the rear end cover respectively, and a plurality of annular permanent magnets 25-2 disposed inside the first hollow frame. The outer side of the first hollow frame is wrapped with an insulated sleeve.

[0246] like Figure 10As shown, the moving part assembly includes: a second hollow frame 23-5 disposed inside the first hollow frame, a plurality of insulating partitions 23-1 disposed on the second hollow frame, and a plurality of sets of wires disposed correspondingly between the insulating partitions, a wire mounting groove 23-2 for guiding the wires disposed on the second hollow frame, and a plurality of isolation pipes disposed at the second end of the second hollow frame, the wires passing through the rear end cover in sequence along the wire mounting groove and the isolation pipes;

[0247] An electronic control module 24 is disposed near the rear end cover and connected to the magnetic drive module;

[0248] In some embodiments, the second adjustment module includes:

[0249] The image acquisition unit is configured to acquire at least one first facial image of the facial region when the needle-free injection device is in a vertical position and the injection module is aligned with the facial region of the injection target.

[0250] The dose selection unit is configured to select a target micro-dose corresponding to the facial region based on the first facial image, and generate a first adjustment signal based on the target micro-dose to be sent to the electronic control module.

[0251] In some embodiments, the system further includes a preprocessing module connected to the second adjustment module.

[0252] The preprocessing module is configured to acquire multiple second facial images of the injection subject, and perform skin texture detection on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information; determine the target micro-dose for the multiple facial regions based on the skin texture information; and add a marker to the second facial images based on the target micro-dose, the marker including: the target micro-dose;

[0253] Accordingly, the dose selection unit includes:

[0254] The first subunit is configured to compare and retrieve the first facial image with at least one second facial image; when at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained.

[0255] The second subunit is configured to determine the target microdose for the corresponding facial region based on the marking information.

[0256] In some embodiments, the system further includes a data management module connected to the second adjustment module.

[0257] It is configured to add a marker to the first facial image based on the actual injection dose, the marker including: the actual injection dose; and store the marked first facial image in an object database.

[0258] Example 6

[0259] Corresponding to the needle-free injection device of Embodiment 5 above, the present invention also provides a micro-dose automated adjustment method, comprising the following steps:

[0260] A needle-free injection device as described in any of Embodiment 5 is provided;

[0261] The needle-free injection device is kept vertical and the needle-free injection head is directed toward the facial area of ​​the recipient.

[0262] At least one first facial image of the facial region is acquired by the image acquisition unit; a target micro-dose corresponding to the facial region is selected by the dose selection unit according to the first facial image, and a first adjustment signal is generated based on the target micro-dose and sent to the second adjustment module;

[0263] The user or the second adjustment module adjusts the first adjustment module to the target position according to the first adjustment signal.

[0264] Accordingly, S305 includes:

[0265] S51 The second adjustment module determines the target rotation angle of the first rotating component based on the first adjustment signal;

[0266] S52 The second adjustment module adjusts the first rotating component to the target position according to the target rotation angle.

[0267] This invention provides a micro-dose adjustment method that combines manual and mechanical operation. This synergistic nature of manual and mechanical operation reduces the user's manual workload while flexibly adapting to real-time operation requirements.

[0268] For example, in some embodiments, the second adjustment module can be configured as a robotic arm structure (such as...). Figure 13 , 14 (As shown) or in conjunction with structures such as robotic arms, the device can automatically adjust the dosage and perform injections under the supervision of the user (such as a doctor) during cosmetic injections. When the injection is relatively difficult (such as when injecting into key areas such as the area near the eyes, or when injecting into individuals with relatively complex skin conditions), the cosmetic physician can also easily remove the needle-free injection device from the robotic arm and manually adjust the dosage and perform the injection.

[0269] In some embodiments, prior to S304, the following is also included:

[0270] Multiple second facial images of the injection subject are acquired, and skin texture detection is performed on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information;

[0271] The target micro-dose for the multiple facial areas is determined based on the skin type information;

[0272] The second facial image is marked according to the target micro-dose, the mark including the target micro-dose.

[0273] Preferably, in some embodiments, this method can be used in conjunction with an existing control system (such as a skin detection instrument connected to a computer). First, the control system performs skin quality analysis on the facial skin of the injection subject to determine the total injection dose and the target micro-dose for different areas. Then, the injection of each different area is completed sequentially according to the target micro-dose.

[0274] In some embodiments, S304 includes:

[0275] The first facial image is compared and retrieved with at least one pre-stored second facial image, wherein the second facial image is a pre-acquired facial image of the injection subject, and the second facial image is marked with the target micro-dose;

[0276] When at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained;

[0277] The target micro-dose for the corresponding facial region is determined based on the marking information.

[0278] In some embodiments, it also includes:

[0279] S306 adds markers to the first facial image based on the actual injection dose, the markers including:

[0280] Actual injection dose;

[0281] S307 stores the marked first facial image into the object database.

[0282] In this embodiment of the invention, an automated dose adjustment design is adopted, which makes it easier to collect and manage real injection information (such as injection dose and injection area), thereby facilitating long-term monitoring and management of the injection information of the injection subject by the user.

[0283] Example 7

[0284] Furthermore, for the needle-free injection device in any of the above embodiments, the present invention also provides a micro-dose automated adjustment method for the needle-free injection device.

[0285] For example, in some exemplary embodiments, the method includes:

[0286] S401 provides a needleless injection device, which includes: a housing 20; an injection module 10 for containing liquid is provided at the first end of the housing, the injection module including: a needleless injection head and a push rod; a magnetic drive module is provided inside the housing, and the mover component in the magnetic drive module can drive the push rod to reciprocate, thereby causing the liquid to be injected or received.

[0287] The housing also contains a first adjustment module for adjusting the range of motion of the moving part assembly.

[0288] S402 keeps the needle-free injection device in a vertical position and directs the needle-free injection head toward the facial area of ​​the injection target;

[0289] S403 acquires at least one first facial image (i.e., skin photograph) of the facial region through the image acquisition unit;

[0290] S404 selects a target micro-dose corresponding to the facial region based on the first facial image, and generates a first adjustment signal based on the target micro-dose to send to the second adjustment module;

[0291] S405 The user or the second adjustment module (or the electronic control module) adjusts the first adjustment module to the target position according to the first adjustment signal.

[0292] Specifically, in some embodiments, the second adjustment module can be communicatively connected to the electronic control module, or the second adjustment module and the electronic control module can be configured as the same module.

[0293] In some embodiments, the first adjustment module includes: a first rotating part and a second rotating part 22-3 meshing with the first rotating part, and the second rotating part can reciprocate along the axial direction under the drive of the first rotating part, thereby adjusting the movement range of the moving part assembly during the reciprocating motion; wherein, the first rotating part includes: a first rotating member 22-1 meshing with the second rotating part 22-3, and a second rotating member 22-2 rotating coaxially with the first rotating member 22-1, the first rotating member protruding outward through the housing opening, the second rotating member having a plurality of limiting protrusions arranged around the axial direction, and the housing having corresponding limiting grooves that cooperate with the limiting protrusions;

[0294] Accordingly, S405 includes:

[0295] S51 The second adjustment module determines the target rotation angle of the first rotating component based on the first adjustment signal;

[0296] S52 The second adjustment module adjusts the first rotating component to the target position according to the target rotation angle.

[0297] In some embodiments, the second adjustment module includes: a fixing structure 31 for fixing the needleless injection device, and an adjustment structure for adjusting the first rotating member, the adjustment structure including: a third rotating member 32 meshing with the first rotating member, and a driving unit 33 for driving the third rotating member 32 to rotate.

[0298] This invention provides a micro-dose adjustment method that combines manual and mechanical operation. This synergistic nature of manual and mechanical operation reduces the user's workload while enabling precise control of minute doses through automated dosage adjustment. Furthermore, when applied to real-world cosmetic injection procedures, this flexible switching between manual and mechanical modes can adapt to real-time operational needs.

[0299] For example, in some embodiments, the second adjustment module can be configured as a robotic arm structure (such as...). Figure 13 , 14 (As shown) or in conjunction with structures such as robotic arms, the device can automatically adjust the dosage and perform injections under the supervision of the user (such as a cosmetic physician) during cosmetic injections. When the injection is relatively difficult (such as when injecting into key areas such as the area near the eyes, or when injecting into individuals with relatively complex skin conditions), the cosmetic physician can also easily remove the needle-free injection device from the robotic arm and manually adjust the dosage and perform the injection.

[0300] In some embodiments, the moving part assembly of the needleless injection device in S401 includes: a second hollow frame, and the first end of the second hollow frame 23-5 is slidably mounted inside the stator assembly via a sliding member 23-4, the sliding member 23-4 being connected to the push rod;

[0301] The moving part assembly further includes a buffer component disposed on the outer periphery of the sliding part, the buffer component including an elastic component (i.e., support spring 23-52) disposed on the outer periphery of the second end of the sliding part; wherein, when the moving part assembly is set in a vertical state, the elastic component contacts the wall surface of the sliding part to limit or reduce the tendency of the sliding part and the second hollow frame to displace due to gravity.

[0302] In some embodiments, the needle-free injection device in S401 has a plurality of first protrusions 27-1 arranged along the axial direction on the inner side of the housing. The adjacent sidewalls of the adjacent first protrusions together form a first groove 27-2, and the first groove penetrates the first end cap and the second end cap on both sides of the housing, thereby forming a plurality of heat dissipation vents on the first end cap and the second end cap.

[0303] The first groove forms multiple heat dissipation ducts arranged along the circumferential direction of the magnetic drive motor. The heat generated by the magnetic drive motor during startup can be discharged along its circumferential direction and, guided by the heat dissipation ducts, is discharged through the heat dissipation vents on both sides of the housing.

[0304] In some embodiments, prior to S404, the following is also included:

[0305] Multiple second facial images of the injection subject are acquired, and skin texture detection is performed on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information;

[0306] The target micro-dose for the multiple facial areas is determined based on the skin type information;

[0307] The second facial image is marked according to the target micro-dose, the mark including the target micro-dose.

[0308] Preferably, in some embodiments, this method can be used in conjunction with an existing control system (such as a skin detection instrument connected to a computer). First, the control system performs skin quality analysis on the facial skin of the injection subject to determine the total injection dose and the target micro-dose for different areas. Then, the injection of each different area is completed sequentially according to the target micro-dose.

[0309] In some embodiments, S404 includes:

[0310] The first facial image is compared and retrieved with at least one pre-stored second facial image, wherein the second facial image is a pre-acquired facial image of the injection subject, and the second facial image is marked with the target micro-dose;

[0311] When at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained;

[0312] The target micro-dose is determined for the corresponding facial region based on the marking information.

[0313] In some embodiments, it also includes:

[0314] S406 adds markers to the first facial image based on the actual injection dose, the markers including:

[0315] Actual injection dose;

[0316] S407 stores the tagged first facial image into the object database.

[0317] In this embodiment of the invention, an automated dose adjustment design is adopted, which makes it easier to collect and manage real injection information (such as injection dose and injection area), thereby facilitating long-term monitoring and management of the injection information of the injection subject by the user.

[0318] It is understandable that, such as Figure 14 As shown, the needle-free injection device or dosage adjustment method in this embodiment of the invention can be connected to a computer 40 and a control system 50 (specifically, various skin testing instruments) to achieve semi-automatic or fully automatic micro-dose adjustment and injection.

[0319] It should be noted that medical aesthetic injections are the preferred injection scenario for this invention. Of course, the injection device or dosage adjustment method of this invention can also be applied to other types of injection scenarios (such as vaccine injections, etc.).

[0320] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0321] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a computer terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0322] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A needle-free injection device using a magnetically driven motor, characterized in that, include: Shell (20); The needleless injection module (10) is disposed at the first end of the housing. The needleless injection module includes: a needleless injection head and a push rod capable of reciprocating along the cavity of the needleless injection head. A magnetically driven motor is disposed inside the housing. The magnetically driven motor includes a front cover, a rear cover, and a stator assembly (25) and a mover assembly (23) disposed between the front cover (26-1) and the rear cover (26-2). The mover assembly is capable of reciprocating along the axial direction of the stator assembly and driving the push rod to move synchronously. The stator assembly includes: a first hollow frame (25-1) connected to the front end cover and the rear end cover respectively, and a plurality of annular permanent magnets (25-2) disposed inside the first hollow frame. The moving part assembly includes: a second hollow frame (23-5) disposed inside the first hollow frame, the second hollow frame having multiple insulating partitions (23-1) disposed on the second hollow frame, and multiple sets of wire groups disposed correspondingly between the insulating partitions, the multiple sets of wire groups being connected in parallel, the second hollow frame also having a wire mounting groove for guiding the wires, the second end of the second hollow frame also having multiple isolation pipes, the wires passing through the rear end cover sequentially along the wire mounting groove and the isolation pipes; the inner side of the housing having multiple first protrusions (27-1) disposed along the axial direction, the adjacent sidewalls of adjacent first protrusions forming a first groove (27-2), and the first groove penetrating the first end cover and the second end cover on both sides of the housing, thereby forming multiple heat dissipation vents on the first end cover and the second end cover; The first groove forms multiple heat dissipation channels arranged along the circumferential direction of the magnetic drive motor. The heat generated by the magnetic drive motor during startup can be discharged along its circumferential direction and discharged through the heat dissipation vents on both sides of the housing under the guidance of the heat dissipation channels. And an electronic control module (24) connected to the magnetic drive motor.

2. The needle-free injection device using a magnetically driven motor according to claim 1, characterized in that, The moving part assembly includes: a sliding component disposed at a first end of the second hollow frame, wherein the second hollow frame is slidably mounted on the inner side of the first hollow frame via the sliding component, and the second end of the sliding component is connected to the push rod; The moving part assembly further includes a buffer component disposed on the outer periphery of the sliding component.

3. A needle-free injection device using a magnetically driven motor according to claim 2, characterized in that, The sliding component includes an annular slider (23-41) connected to the first end of the second hollow frame. At least one wear-resistant ring (23-42) is provided on the outer side of the annular slider. When the moving part assembly is installed inside the magnetic drive motor through the annular slider, the moving part assembly contacts the stator assembly through the wear-resistant ring. And / or, the buffer component includes: a shock-absorbing pad (23-51) disposed between the front end cover and the sliding component. And / or, the buffer component includes: an elastic component (23-52) disposed on the outer periphery of the second end of the sliding component; wherein, when the mover assembly pushes the push rod under the action of gravity, the elastic component contacts the wall surface of the sliding component to limit the displacement of the sliding component.

4. A needle-free injection device using a magnetically driven motor according to claim 3, characterized in that, The front cover (26-1) includes: a first cover plate (26-11) fixedly connected to the housing, the first cover plate having an opening for the second end of the sliding component to pass through, and a second cover plate (26-12) protruding outward along the edge of the opening, the hollow area of ​​the second cover plate providing a reciprocating movement path for the push rod and the sliding component, wherein the buffer component is disposed on the inner side of the first cover plate and / or the second cover plate.

5. A needle-free injection device using a magnetically driven motor according to claim 1, characterized in that, A collaborative operation area is provided near the second end of the housing. The collaborative operation area forms a collaborative operation path along the axial direction of the housing. The following components are arranged sequentially along the collaborative operation path: a start switch (21), a first adjustment module, and a display module. The display module is located in the area corresponding to the electronic control module and is connected to the electronic control module. And / or, the magnetically driven motor further includes: an iron core for increasing electromagnetic density, the iron core being disposed inside the second hollow frame; And / or, the first hollow frame is made of magnetically shielding material; And / or, the injection end of the needleless injection head is provided with an injection signal acquisition module, which is used to acquire the pressure signal of the injection end, and when the pressure signal is within a preset threshold, sends a corresponding start signal to the electronic control module so that the liquid in the needleless injection head is injected.

6. A needle-free injection device using a magnetically driven motor according to claim 1, characterized in that, Also includes: A first adjustment module (22) for adjusting the injection dose, the first adjustment module includes: a first rotating part, and a second rotating part (22-3) meshing with the first rotating part, and the second rotating part can reciprocate along the axial direction under the drive of the first rotating part, thereby adjusting the movement range of the moving part assembly during the reciprocating motion; The first rotating part includes a first rotating member (22-1) and a second rotating member (22-2) that rotate coaxially. The first rotating member meshes with the second rotating part. The second rotating member is provided with a plurality of limiting protrusions along its axial direction, and the housing is provided with at least one limiting groove that cooperates with the limiting protrusions.

7. A needle-free injection device using a magnetically driven motor according to claim 6, characterized in that, Also includes: A second adjustment module connected to the electronic control module, the second adjustment module comprising: An image acquisition unit is configured to acquire at least one first facial image of the facial region when the injection device is in a vertical position and the needleless injection module is aligned with the facial region of the injection target. The dose selection unit is configured to select a target micro-dose corresponding to the facial region based on the first facial image, and generate a first adjustment signal based on the target micro-dose to be sent to the electronic control module.

8. A needle-free injection device using a magnetically driven motor according to claim 7, characterized in that, Also includes: A preprocessing module connected to the second adjustment module is configured to acquire multiple second facial images of the injection subject and perform skin texture detection on multiple facial regions of the injection subject based on the second facial images to obtain corresponding skin texture information. The target micro-dose for the multiple facial areas is determined based on the skin type information; A marker is added to the second facial image based on the target micro-dose, the marker including: the target micro-dose; Accordingly, the dose selection unit includes: The first subunit is configured to compare and retrieve the first facial image with at least one second facial image; when at least one second facial image is found to match the first facial image, the tagging information of the second facial image is obtained. The second subunit is configured to determine the target microdose for the corresponding facial region based on the marking information.

9. A needle-free injection device using a magnetically driven motor according to claim 7, characterized in that, Also includes: The data management module connected to the second adjustment module is configured to add a marker to the first facial image based on the actual injection dose, the marker including: the actual injection dose; The tagged first facial image is stored in the object database.

10. A dosage adjustment method for a needle-free injection device for a magnetically driven motor, characterized in that, Including the following steps: S101 provides a needle-free injection device as described in any one of claims 7-9; S102 keeps the needle-free injection device in a vertical position and directs the needle-free injection head toward the facial area of ​​the injection target; S103 acquires at least one first facial image of the facial region through the image acquisition unit; S104 selects a target micro-dose corresponding to the facial region based on the first facial image, and generates a first adjustment signal based on the target micro-dose to send to the second adjustment module; S105 The user or the second adjustment module adjusts the first adjustment module to the target position according to the first adjustment signal.

Images