Auxiliary injection device for needle-free syringe

Abstract

The present invention relates to the technical field of medical instruments, and in particular to an auxiliary injection device for a needle-free syringe; the auxiliary injection device is used to assist patients in manually injecting drugs using a needle-free syringe, and includes: a main body, an injection parameter monitoring structure, a central processing module, and a light feedback structure. The present invention can provide preset values ​​according to the user's body type classification, and use a sliding potentiometer to obtain the travel distance of each feeler, and then determine whether the current angle is a safe injection angle. At the same time, after determining whether the injection angle is safe, it can also determine whether the current travel of each sliding potentiometer meets the preset requirements based on the injection pressure preset values ​​previously set for different groups of people. This not only improves the safety of the device, but also enables more accurate adjustment and adaptation between different injection sites and different groups of people.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an auxiliary injection device for a needle-free syringe. Background Art

[0002] Needle-free injection technology has been widely used in my country. It has the characteristics of needle-free, painless, no cross-infection, convenient, trace, efficient, safe, and easy to use. Its core principle is to use high-pressure jet technology to quickly inject drugs into the body, so as to achieve the goal of completing injections without needles. This innovative technology not only brings great convenience to patients, but also has a profound impact on the medical industry. First of all, from the patient's perspective, needle-free injection technology eliminates the pain caused by traditional needle injections; for many patients who are afraid of needles, this is undoubtedly a great blessing. Needle-free injection not only reduces the psychological burden of patients during medical treatment and improves the comfort of treatment, but also helps to improve patient compliance and make drug intake smoother. Secondly, from the perspective of medical staff, needle-free injection technology reduces their occupational exposure risks during the operation; traditional needle injections have a certain risk of infection, while needle-free injections completely avoid this problem; in this way, when medical staff inject drugs for patients, they no longer have to worry about cross-infection and other problems caused by operational errors, thereby ensuring medical safety. However, needle-free injection technology also has certain disadvantages. Compared with traditional needle injection, needle-free injection requires a vertical angle between the drug tube and the skin to ensure that the drug can be completely injected into the body. If the angle deviation is too large, it may result in incomplete injection or even severe pain.

[0003] Some patents have proposed some solutions to the above problems. For example, the Chinese patent with application number CN201210285150.2 discloses an auxiliary injection device for a needle-free syringe. The device is mainly composed of a sliding sleeve, an upper limit ring, a lower limit ring, a sleeve, an inner spring, a nut, an outer spring, a sliding frame and a Velcro. Its design concept is to achieve a tight fit between the skin and the medicine tube through a structure similar to a clamp. This device can not only effectively avoid problems such as lateral movement and incorrect injection angles that may occur during the injection process, but also greatly improve the accuracy of the injection and the comfort of the patient. However, despite the significant technical breakthroughs made by this needle-free syringe, there are still some limitations and challenges in practical applications.

[0004] First, the most prominent problem is that the actual application range of the device may be limited to the arm, and this limitation is mainly determined by the way the device is fixed. The device is fixed with Velcro, and although this method can achieve a good fixation effect on the arm, it may face some challenges in other parts with large skin curvature and wide outer diameter, such as the abdomen and legs.

[0005] Secondly, the length of the Velcro is a factor that cannot be ignored. Since the size of the human skin varies greatly, if you want to adapt to the size of different parts, you need to design a Velcro with adjustable length. However, this design may bring some inconveniences in actual operation, such as the process of adjusting the length may be cumbersome, or it may be too tight or too loose when worn.

[0006] Thirdly, patients of different body types have different requirements for injection pressure. For thinner patients, if the same injection pressure is used as for fatter patients, the injection experience may be poor due to excessive force, and may even cause pain or discomfort. Conversely, for fatter patients, if the injection pressure is too low, the effective penetration of the drug may not be guaranteed, thus affecting the treatment effect.

[0007] To this end, the present invention provides an auxiliary injection device for a needle-free syringe. Summary of the invention

[0008] Based on this, it is necessary to provide an auxiliary injection device for a needle-free syringe to address the above-mentioned technical problems. The auxiliary injection device has a simple structure and is easy and convenient to assemble with the needle-free syringe. At the same time, it can monitor and adjust the injection angle and injection pressure during the injection process in real time to ensure the accuracy and safety of the injection, and can meet the needs of more patients.

[0009] In order to achieve the above object, the technical solution of the present invention is as follows:

[0010] An auxiliary injection device for a needle-free syringe, the auxiliary injection device is used to assist a patient in manually injecting a drug using a needle-free syringe, comprising:

[0011] A main body, the main body being movably mounted along the length direction of the needle-free syringe;

[0012] An injection parameter monitoring structure, one end of which is fixedly installed inside the main body, and the other end of which penetrates the main body and extends outward, for real-time monitoring of injection parameter information of the needle-free syringe, and sending the injection parameter information to the central processing module for analysis and processing;

[0013] A central processing module, which is arranged inside the main body and fixedly mounted on the injection parameter monitoring structure, is used to receive injection parameter information, perform comparative analysis according to preset injection parameter determination rules, determine whether the injection angle and injection pressure of the needle-free syringe during simulated injection or real injection meet the preset injection requirements, obtain a comparison result, generate a corresponding light color control signal based on the comparison result, and send the light color control signal to the light feedback structure for light feedback; wherein the injection parameter monitoring structure and the light feedback structure are electrically connected to the central processing module respectively;

[0014] The light feedback structure is fixedly mounted on the main body and is used to receive a light color control signal and display a light state corresponding to the comparison result.

[0015] In some embodiments, the main body includes a lower shell and an upper shell covering each other; wherein:

[0016] The lower shell comprises a first circular base and a first U-shaped body structure that are connected to each other. The number of the first U-shaped body structures is four. The four first U-shaped body structures are arranged around the outer periphery of the first circular base. A first circular installation cavity for inserting a needle-free syringe is provided in the middle of the first circular base. A first storage cavity is provided inside the first U-shaped body structure. A first positioning structure for inserting a first bayonet structure of the upper shell is provided on the inner wall of the first storage cavity. A first screw hole seat is protruded upward from the lower surface at the bottom of the first U-shaped body structure for being screwed and fixedly connected with the upper shell.

[0017] The upper shell includes a second circular base and a second U-shaped body structure that are connected to each other. The number of the second U-shaped body structures is four, and the four second U-shaped body structures are arranged around the outer circumference of the second circular base. A second circular mounting cavity for inserting a needle-free syringe is opened in the middle of the second circular base, and the first circular mounting cavity and the second circular mounting cavity are arranged correspondingly. A first latch structure matching the first locking structure is provided inside the second U-shaped body structure.

[0018] In some embodiments, the bottom of the lower shell body is provided with a battery compartment protruding upward from the lower surface for installing a battery, a battery bottom cover is movably connected to the battery compartment, a card slot is provided on one side of the battery compartment, and a spring buckle matching the card slot is provided on the side of the battery bottom cover.

[0019] In some embodiments, there are four injection parameter monitoring structures, each of which includes a contact, a sliding potentiometer, a mounting plate and a positioning rod. The mounting plate is installed on the battery compartment, and a second screw hole seat is protruding upward from the lower surface at the bottom of the first U-shaped body structure, which is used to be screwed to the mounting plate. A second locking structure for limiting the mounting plate is provided on the inner wall of the first storage cavity. The sliding potentiometer and the positioning rod are fixedly installed on the mounting plate. A guide cavity for sliding cooperation with the positioning rod is provided inside the contact, and a recessed structure for cooperating with the lever of the sliding potentiometer is provided at the bottom of the contact. The second U-shaped body structure is provided with a slot for passing the contact.

[0020] In some embodiments, the central processing module is fixedly mounted on a mounting plate.

[0021] In some embodiments, a toggle switch is also included, wherein the mounting plate is fixedly mounted on the connecting block, the toggle switch is arranged on the connecting block, a control circuit board is arranged inside the connecting block, the toggle switch and the connecting block are slidably matched, the toggle switch is electrically connected to the control circuit board, the control circuit board is electrically connected to the central processing module, the toggle switch has a toggle part for the user to toggle the operation, and the toggle part is toggled to adjust the monitoring gear corresponding to the injection parameter monitoring structure, and a toggle opening for the toggle part to slide horizontally is also provided on the side of the second U-shaped body structure.

[0022] In some embodiments, an indicator light is further provided on the side of the mounting plate, and a through hole is opened on the side of the second U-shaped body structure at a position corresponding to the indicator light.

[0023] In some embodiments, the contact has three equally spaced scale mark intervals or three equally spaced color areas for the user to observe.

[0024] In some embodiments, the light feedback structure includes a light guide ring and a light board, the light board is fixedly installed on the inner side of the second circular base, the outer side of the second circular base is provided with an annular groove for socketing the light guide ring, and the bottom of the annular groove is provided with a light-transmitting groove connected to the interior of the second circular base.

[0025] In some embodiments, a limiting portion adapted to the outer edge shape of the needle-free syringe is provided on the inner side of the second circular mounting cavity, and an anti-slip layer is also provided on the side of the limiting portion facing the needle-free syringe to increase the contact friction between the limiting portion and the needle-free syringe.

[0026] The advantages and beneficial effects of the present invention are:

[0027] (1) The present invention provides an auxiliary injection device for a needle-free syringe. The device adopts a sleeve form to construct the overall structure, making the use and installation process of the device simple, convenient and quick. Compared with existing auxiliary injection devices, they are often bulky, and the wearable design also brings many inconveniences to users, such as difficult installation and cumbersome use. The sleeve design of the present invention can effectively solve these problems, allowing users to easily get started and quickly complete installation and use;

[0028] (2) The present invention provides an auxiliary injection device for a needle-free syringe. The device is provided with four sliding potentiometers for collecting injection data, which can not only save space in the device, but also reduce the failure rate of the device to a large extent, thereby saving the development cost of the device. At the same time, the injection data collected by the sliding potentiometer can accurately calculate the travel distance of each antenna and the travel distance difference between them, so that the user can monitor and adjust the status of the device in real time.

[0029] (3) The present invention provides an auxiliary injection device for a needle-free syringe. The device can provide preset values ​​according to the user's body shape classification, and use a sliding potentiometer to obtain the travel distance of each tentacles, thereby judging whether the current angle is a safe injection angle. At the same time, after judging whether the injection angle is safe, it can also judge whether the current travel of each sliding potentiometer meets the preset requirements according to the injection pressure preset values ​​previously set for different groups of people. This not only improves the safety of the device, but also enables more accurate adjustment and adaptation between different injection sites and different groups of people. In addition, through injection angle analysis and comprehensive analysis of injection pressure, it is used to judge whether injection can be performed at present. This integrated intelligent device not only solves the limitations of existing auxiliary injection devices in use at different injection sites and for different groups of people, but also adds an injection angle detection function that the existing auxiliary injection devices do not have, greatly improving the safety of injection and providing users with a safer and more reliable injection experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an auxiliary injection device of a needle-free syringe in an embodiment of the present invention;

[0031] Figure 2 An exploded view of an auxiliary injection device for a needle-free syringe according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the internal structure of an auxiliary injection device for a needle-free syringe in an embodiment of the present invention;

[0033] Figure 4It is an assembly diagram of the auxiliary injection device of the needle-free syringe and the needle-free syringe in the embodiment of the present invention;

[0034] Figure 5 is a top view of the lower housing in an embodiment of the present invention;

[0035] Figure 6 A bottom view of the upper housing in an embodiment of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the upper shell in an embodiment of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the injection parameter monitoring structure in an embodiment of the present invention;

[0038] Fig. 9 It is a schematic structural diagram of the injection parameter monitoring structure from another angle in an embodiment of the present invention;

[0039] Fig.10 Schematic diagram of the structure of the contact in the embodiment of the present invention.

[0040] Figure numerals: upper shell 1, lower shell 2, contact 3, injection parameter monitoring structure 4, battery 5, battery bottom cover 6, light guide ring 7, light board 8, sliding potentiometer 4011, central processing module 4012, positioning rod 4013, indicator light 4014, toggle switch 4015, mounting plate 4016, connecting block 4017, toggle rod 4018, needle-free syringe 9, first U-shaped body structure 10, first circular base 11, first circular mounting cavity 12, first screw hole seat 13, first clamping structure 14, second clamping structure 15, second screw hole seat 16, battery compartment 17, guide cavity 18, recessed structure 19, second U-shaped body structure 20, second circular base 21, second circular mounting cavity 22, first bayonet structure 23, slot 24, annular groove 25, light-transmitting groove 26, limiting portion 27, DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] Furthermore, in the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0044] Embodiment 1

[0045] See also Figure 1-3 As shown, the purpose of this embodiment is to provide an auxiliary injection device for a needle-free syringe, comprising: a main body, an injection parameter monitoring structure 4, a central processing module 4012 and a light feedback structure, wherein the main body is movably installed along the length direction of the needle-free syringe 9; one end of the injection parameter monitoring structure 4 is fixedly installed inside the main body, and the other end penetrates the main body and extends outward, and is used to monitor the injection parameter information of the needle-free syringe 9 in real time, and send the injection parameter information to the central processing module 4012 for analysis and processing; the central processing module 4012 is arranged inside the main body and fixedly installed on the injection parameter monitoring structure 4, and is used to receive the injection parameter information, perform comparative analysis according to the preset injection parameter judgment rules, determine whether the injection angle and injection pressure of the needle-free syringe 9 during simulated injection or real injection meet the preset injection requirements, obtain a comparison result, generate a corresponding light color control signal based on the comparison result, and send the light color control signal to the light feedback structure for light feedback; wherein the injection parameter monitoring structure 4 and the light feedback structure are electrically connected to the central processing module 4012 respectively; the light feedback structure is fixedly installed on the main body, and is used to receive the light color control signal, and display the light state corresponding to the comparison result.

[0046] In this embodiment, the main body includes a lower shell 2 and an upper shell 1 that cover each other; wherein:

[0047] See also Figure 5As shown, the lower shell 2 includes a first circular base 11 and a first U-shaped body structure 10 that are connected to each other. The number of the first U-shaped body structures 10 is four, and the four first U-shaped body structures 10 are arranged around the outer circumference of the first circular base 11. A first circular mounting cavity 12 for inserting a needle-free syringe 9 is opened in the middle of the first circular base 11. A first receiving cavity is arranged inside the first U-shaped body structure 10. A first positioning structure 14 for inserting a first bayonet structure 23 of the upper shell 1 is arranged on the inner wall of the first receiving cavity. The bottom of the first U-shaped body structure 10 is provided with a first screw hole seat 13 protruding upward from the lower surface for being screwed and fixedly connected with the upper shell 1.

[0048] See also Figure 6-7 As shown, the upper shell 1 includes a second circular base 21 and a second U-shaped body structure 20 that are connected to each other. The number of the second U-shaped body structures 20 is four, and the four second U-shaped body structures 20 are arranged around the outer circumference of the second circular base 21. A second circular mounting cavity 22 for inserting a needle-free syringe 9 is opened in the middle of the second circular base 21. The first circular mounting cavity 12 and the second circular mounting cavity 22 are arranged correspondingly, and a first latch structure 23 matching the first locking structure 14 is provided inside the second U-shaped body structure 20.

[0049] Furthermore, the present invention provides four overlapping first U-shaped structures 10 and second U-shaped structures 20 for mounting four sliding potentiometers 4011, and then uses the sliding potentiometers 4011 to obtain the travel distance of each feeler, so as to perform subsequent injection angle and injection pressure judgment; and provides a first positioning structure 14 and a first latch structure 23, wherein the first positioning structure 14 is a U-shaped structure (see Figure 5 As shown), the limit installation between the lower shell 2 and the upper shell 1 can be achieved, and the stability of the assembled structure can be improved. At the same time, the first screw hole seat 13 is penetrated by screws to fix the lower shell 2 and the upper shell 1, so that the installation of the main body of the device can be achieved, and the assembly is convenient and quick; by setting the first circular installation cavity 12 and the second circular installation cavity 22, the needle-free syringe 9 is used to penetrate and assist the injection.

[0050] In this example, see Figure 2-3 As shown, a battery compartment 17 for installing a battery 5 is protruded upward from the bottom surface at the bottom of the lower shell 2, and a battery bottom cover 6 is movably connected to the battery compartment 17. A card slot is provided on one side of the battery compartment 17, and a spring clip matching the card slot is provided on the side of the battery bottom cover 6; by setting up the battery compartment 17 for placing the power supply battery 5, the battery bottom cover 6 can be buckled and fixed on the battery compartment 17 with the synergistic effect of the card slot and the spring clip, so as to fix the battery 5.

[0051] In this example, see Figure 8-10As shown, there are four injection parameter monitoring structures 4, each of which includes a contact 3, a sliding potentiometer 4011, a mounting plate 4016 and a positioning rod 4013. The mounting plate 4016 is installed on the battery compartment 17. The bottom of the first U-shaped body structure 10 is provided with a second screw hole seat 16 protruding upward from the lower surface, which is used to be screwed and connected with the mounting plate 4016. A second locking structure 15 for limiting the mounting plate 4016 is provided on the inner wall of the first storage cavity. The sliding potentiometer 4011 and the positioning rod 4013 are both fixedly installed on the mounting plate 4016. A guide cavity 18 for slidingly cooperating with the positioning rod 4013 is provided inside the contact 3. A recessed structure 19 for cooperating with the lever 4018 of the sliding potentiometer 4011 is provided at the bottom of the contact 3. A slot 24 for passing the contact 3 is provided on the second U-shaped body structure 20.

[0052] Furthermore, the present invention is provided with a contact 3, a sliding potentiometer 4011, a mounting plate 4016 and a positioning rod 4013, wherein the mounting plate 4016 is fixedly mounted inside the first U-shaped body structure 10 of the lower housing 2 through a second clamping structure 15 and a second screw hole seat 16, wherein the second clamping structure 15 is an L-shaped structure (see Figure 5 As shown), so as to achieve the limit fixation of the mounting plate 4016; in order to guide the moving direction of the contact 3, the present invention provides a positioning rod 4013 and a guide cavity 18, so that the contact 3 can stably slide along the length direction of the positioning rod 4013; at the same time, by providing a recessed structure 19 at the bottom of the contact 3, it can be used in conjunction with the lever 4018 of the sliding potentiometer 4011, so that the sliding potentiometer 4011 can obtain the travel distance of each feeler in real time according to the position change of the contact 3, so as to subsequently judge whether the current injection angle is a safe injection angle and whether the current injection pressure meets the preset requirements.

[0053] In this embodiment, the central processing module 4012 serves as a data processing element, which is fixedly mounted on the mounting plate 4016 and is used to receive injection parameter information, wherein the injection parameter information is the travel distance of each antenna, and a comparison analysis is performed based on a preset injection parameter determination rule to obtain a comparison result, and based on the comparison result, a corresponding light color control signal is generated, and the light color control signal is sent to the light feedback structure for light feedback, based on the light feedback mechanism, so that the user can monitor and adjust the status of the device in real time.

[0054] In this embodiment, the light feedback structure includes a light guide ring 7 and a light board 8. The light board 8 is fixedly installed on the inner side of the second circular base 21. The outer side of the second circular base 21 is provided with an annular groove 25 for socketing the light guide ring 7. The bottom of the annular groove 25 is provided with a light-transmitting groove 26 connected to the interior of the second circular base 21. By setting the light guide ring 7 and the light board 8, different judgment results can be conveyed through the light changes in the center of the auxiliary injection device based on the light color control signal sent by the central processing module 4012 according to the light feedback mechanism.

[0055] In this embodiment, an indicator light 4014 is also provided on the side of the mounting plate 4016, and a through hole is provided on the side of the second U-shaped structure 20 corresponding to the position of the indicator light 4014. The indicator light 4014 and the through hole are provided to display the working status of the device.

[0056] Working principle:

[0057] See also Figure 2-4 As shown, when assembling the device, first, the mounting plate 4016 is fixedly installed inside the first U-shaped body structure 10 through the second locking structure 15 and the second screw hole seat 16, and then the sliding potentiometer 4011, the positioning rod 4013 and the central processing module 4012 are fixedly installed on the mounting plate 4016 respectively (the fixed installation method can be welding fixing method), and then the contact 3 can be installed on the sliding potentiometer 4011 and the positioning rod 4013 by using the cooperation between the guide cavity 18 and the positioning rod 4013 and between the recessed structure 19 and the lever 4018 of the sliding potentiometer 4011, and then the upper shell 1 is fixed to the lower shell 2 by using the first locking structure 14, the first bayonet structure 23 and the first screw hole seat 13. At the same time, the contact 3 is set through the upper shell 1 through the slot 24, and then the battery is placed in the battery compartment 17 and fixed by snapping the battery bottom cover 6. The present invention adopts a sleeve form to construct the overall structure, making the use and installation process of the device simple, convenient and quick. Compared with existing auxiliary injection devices, they are often bulky, and the wearable design also brings many inconveniences to users, such as difficult installation and cumbersome use. The sleeve design of the present invention can effectively solve these problems, allowing users to easily get started and quickly complete installation and use.

[0058] Embodiment 2

[0059] Considering that the injection pressure of different users may not be the same, in order to ensure the injection pressure requirements of the needle-free syringe 9, please refer to Figure 8As shown, the present invention also includes a toggle switch 4015, which is fixedly installed on a connecting block 4017 on a mounting plate 4016. The toggle switch 4015 is arranged on the connecting block 4017. A control circuit board is provided inside the connecting block 4017. The toggle switch 4015 and the connecting block 4017 are slidably matched. The toggle switch 4015 is electrically connected to the control circuit board. The control circuit board is electrically connected to a central processing module 4012. The toggle switch 4015 has a toggle portion for a user to toggle the operation. By toggling the toggle portion, the monitoring gear corresponding to the injection parameter monitoring structure 4 is adjusted. A toggle opening for horizontal sliding of the toggle portion is also provided on the side of the second U-shaped body structure 20.

[0060] Furthermore, the present invention utilizes the BIM index to divide different user groups into three parts: underweight, normal and overweight, wherein the contact 3 travel distance intervals corresponding to the injection strength of these three user groups are 3-5mm, 5-10mm and 10-15mm respectively; for this purpose, the present invention is provided with a toggle switch 4015, which has three gears, corresponding to the three injection strengths respectively. Before performing a simulated injection or a real injection, the device is first sleeved on the needle-free syringe 9, and then the toggle switch 4015 is toggled to the position corresponding to the user's BIM index (such as: toggling to the left for underweight, toggling to the right for overweight, and the middle position for normal). After the toggle is completed, the central processing module 4012 sets the preset value of the injection pressure to the currently selected population according to the toggle position, and then the user can perform the injection according to the injection point required by himself.

[0061] Embodiment 3

[0062] See also Fig.10 As shown, considering that the user can intuitively understand whether the current injection pressure is suitable, the contact 3 has three equally spaced scale line intervals or three equally spaced color areas for the user to observe, wherein three equally spaced scale line intervals are set on the contact 3 from top to bottom. When the contact 3 is used for auxiliary injection, the position of the contact 3 can be changed according to the current injection pressure, that is, by observing the scale line interval where the length of the contact 3 extending out of the upper shell 1 is located, the user can intuitively understand whether the current injection pressure is suitable.

[0063] In addition, three color areas can be set at equal intervals from top to bottom on the contact 3. When the contact 3 is used for auxiliary injection, the position of the contact 3 can be changed according to the current injection pressure. That is, by observing the color area where the length of the contact 3 extending out of the upper shell 1 is located, the user can intuitively understand whether the current injection pressure is suitable.

[0064] Embodiment 4

[0065] Considering the stability of the assembly between the device and the needle-free syringe 9, please refer to Figure 6-7 As shown, a limiting portion 27 adapted to the outer edge shape of the needle-free syringe 9 is provided on the inner side of the second circular mounting cavity 22, and an anti-slip layer is also provided on the side of the limiting portion 27 facing the needle-free syringe 9, which is used to increase the friction force of contact between the limiting portion 27 and the needle-free syringe 9; wherein, before performing a simulated injection or a real injection, the device is first inserted from the front end of the needle-free syringe 9, and moved along the front end to the rear end of the needle-free syringe 9 until it moves to the limiting portion 27; in addition, in order to increase the friction force of contact between the device and the needle-free syringe 9, an anti-slip layer (such as a rubber layer) is also provided on the side of the limiting portion 27 facing the needle-free syringe 9, so as to improve the stability of the device when in use.

[0066] Embodiment 5

[0067] This embodiment discloses the working principle of the central processing module 4012, wherein:

[0068] The analysis process for injection angle includes:

[0069] When the four contacts 3 are pressed, the corresponding sliding potentiometers 4011 will obtain the travel distance according to the movement of the contacts 3. For example, the four sliding potentiometers 4011 are numbered as A1, A2, A3, and A4. In order to ensure that the needle-free syringe 9 needs to be perpendicular to the injection point during injection, after the central processing module 4012 receives the travel distances corresponding to A1, A2, A3, and A4, the travel distance difference between the A1 and A3 sliding potentiometers 4011 and the travel distance difference between the A2 and A4 sliding potentiometers 4011 are calculated, and compared with the preset injection requirements (the travel distance difference between the two opposite sliding potentiometers 4011 is ≤5mm), it is determined whether the injection angle of the needle-free syringe 9 during simulated injection or real injection is a safe injection angle. If the travel distance difference between the A1 and A3 sliding potentiometers 4011 and the travel distance difference between the A2 and A4 sliding potentiometers 4011 are both less than or equal to 5mm, the current angle is determined to be a safe injection angle, otherwise, the current angle is determined to be an unsafe injection angle.

[0070] The analysis process for injection pressure includes:

[0071] When the four contacts 3 are pressed, the corresponding sliding potentiometer 4011 will obtain the stroke distance according to the movement of the contact 3. According to the position of the toggle switch 4015 moved by different users before, the central processing module 4012 can determine whether the injection pressure meets the preset requirements according to the stroke distances set by different groups of people. The stroke distances corresponding to A1, A2, A3, and A4 are used to determine whether the current stroke of each sliding potentiometer 4011 meets the preset requirements (the stroke distance thresholds of the four sliding potentiometers 4011). If the actual stroke distance of the sliding potentiometer 4011 is within the stroke distance threshold range, it is determined that the current injection pressure meets the preset requirements. Otherwise, it is determined that the current injection pressure does not meet the preset requirements.

[0072] Furthermore, the injection angle involved in the present invention is the first judgment condition, and the injection pressure is the second judgment condition. Only when both conditions are met, it indicates that the current injection situation is the most suitable.

[0073] Embodiment 6

[0074] This embodiment discloses the working principle of the light feedback structure, wherein:

[0075] In order to ensure that the user can clearly understand the various states during the injection process, the present invention proposes a light feedback mechanism for state feedback. This mechanism conveys different judgment results through the changes in the light at the center of the auxiliary injection device, specifically including:

[0076] (1) When the injection angle and injection pressure are incorrect, the light will display a color (such as red) to remind the user that the current state does not meet the injection requirements.

[0077] (2) When the injection angle is correct but the injection pressure is incorrect, the light will be displayed in another color (such as yellow) to prompt the user to adjust the pressure.

[0078] (3) When the injection angle is wrong but the injection pressure is correct, the light will display a third color (such as blue) to remind the user to adjust the injection angle.

[0079] (4) When the injection angle and force are correct, the light will display a fourth color (such as green) to indicate that the current state allows safe injection.

[0080] Through this intuitive and easy-to-understand light feedback mechanism, users can quickly understand the status of the needle-free injection device and make corresponding adjustments to ensure the safety and effectiveness of the injection process.

[0081] In summary, the present invention provides an auxiliary injection device for a needle-free syringe 9, and introduces in detail the working principle, functional characteristics and light feedback mechanism of the auxiliary injection device based on four sliding potentiometers 4011; through the travel distance information of the sliding potentiometer 4011, it is possible to achieve accurate analysis of the injection angle and injection force, and provide intuitive status indication in combination with the light feedback mechanism. This auxiliary injection device not only improves the safety and comfort of the injection process, but also helps to reduce the waste of medical resources and reduce medical costs, and plays an important role in the auxiliary injection of needle-free injection technology in the medical field.

[0082] Obviously, it should be understood by those skilled in the art that the above-mentioned various steps of the present invention can be performed in a manner different from the present invention, and the simulation method and experimental equipment include but are not limited to the above description. The above-mentioned various steps of the present invention can be performed in an order different from that here in some cases, and the steps shown or described above can be performed separately. Therefore, the present invention is not limited to any specific combination of hardware and software.

[0083] The above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. An auxiliary injection device for a needle-free syringe, characterized in that: The auxiliary injection device is used to assist a patient in manually injecting a drug using a needle-free syringe, and comprises: A main body, the main body being movably mounted along the length direction of the needle-free syringe; An injection parameter monitoring structure, one end of which is fixedly installed inside the main body, and the other end of which penetrates the main body and extends outward, for real-time monitoring of injection parameter information of the needle-free syringe, and sending the injection parameter information to the central processing module for analysis and processing; A central processing module, which is arranged inside the main body and fixedly mounted on the injection parameter monitoring structure, is used to receive injection parameter information, perform comparative analysis according to preset injection parameter determination rules, determine whether the injection angle and injection pressure of the needle-free syringe during simulated injection or real injection meet the preset injection requirements, obtain a comparison result, generate a corresponding light color control signal based on the comparison result, and send the light color control signal to the light feedback structure for light feedback; wherein the injection parameter monitoring structure and the light feedback structure are electrically connected to the central processing module respectively; A light feedback structure, which is fixedly mounted on the main body and is used to receive a light color control signal and display a light state corresponding to the comparison result; The main body comprises a lower shell and an upper shell covering each other; wherein: The lower shell comprises a first circular base and a first U-shaped body structure that are connected to each other. The number of the first U-shaped body structures is four. The four first U-shaped body structures are arranged around the outer periphery of the first circular base. A first circular installation cavity for inserting a needle-free syringe is provided in the middle of the first circular base. A first storage cavity is provided inside the first U-shaped body structure. A first positioning structure for inserting a first bayonet structure of the upper shell is provided on the inner wall of the first storage cavity. A first screw hole seat is protruded upward from the lower surface at the bottom of the first U-shaped body structure for being screwed and fixedly connected with the upper shell. The upper shell comprises a second circular base and a second U-shaped body structure which are connected to each other. The number of the second U-shaped body structures is four. The four second U-shaped body structures are arranged around the outer circumference of the second circular base. A second circular installation cavity for inserting a needle-free syringe is opened in the middle of the second circular base. The first circular installation cavity and the second circular installation cavity are arranged correspondingly. A first bayonet structure matching the first bayonet structure is arranged inside the second U-shaped body structure. The bottom of the lower shell is provided with a battery compartment for installing the battery protruding upward from the lower surface, the battery compartment is movably connected with a battery bottom cover, a card slot is provided on one side of the battery compartment, and a spring buckle matching the card slot is provided on the side of the battery bottom cover; There are four injection parameter monitoring structures, and each of the injection parameter monitoring structures includes a contact, a sliding potentiometer, a mounting plate and a positioning rod. The mounting plate is installed on the battery compartment. The bottom of the first U-shaped body structure is provided with a second screw hole seat protruding upward from the lower surface, which is used for screwing and fixing with the mounting plate. The inner wall of the first storage cavity is provided with a second locking structure for limiting the mounting plate. The sliding potentiometer and the positioning rod are both fixedly installed on the mounting plate. A guide cavity for sliding cooperation with the positioning rod is provided inside the contact. The bottom of the contact is provided with a recessed structure used in cooperation with the lever of the sliding potentiometer. The second U-shaped body structure is provided with a slot for passing the contact.

2. The auxiliary injection device of a needle-free syringe according to claim 1, characterized in that: The central processing module is fixedly mounted on the mounting plate.

3. The auxiliary injection device of a needle-free syringe according to claim 2, characterized in that: It also includes a toggle switch, which is fixedly installed on the connecting block on the mounting plate. The toggle switch is arranged on the connecting block. A control circuit board is arranged inside the connecting block. The toggle switch and the connecting block are slidably matched. The toggle switch is electrically connected to the control circuit board. The control circuit board is electrically connected to a central processing module. The toggle switch has a toggle part for the user to toggle the operation. By toggling the toggle part, the monitoring gear corresponding to the injection parameter monitoring structure is adjusted. A toggle opening for the toggle part to slide horizontally is also provided on the side of the second U-shaped body structure.

4. The auxiliary injection device of a needle-free syringe according to claim 3, characterized in that: An indicator light is also provided on the side of the mounting plate, and a through hole is provided on the side of the second U-shaped structure at a position corresponding to the indicator light.

5. The auxiliary injection device of a needle-free syringe according to claim 1, characterized in that: The contact has three scale mark intervals arranged at equal intervals or three color areas arranged at equal intervals for users to observe.

6. The auxiliary injection device of a needle-free syringe according to claim 1, characterized in that: The light feedback structure includes a light guide ring and a light board, wherein the light board is fixedly mounted on the inner side of the second circular base, and an annular groove for sleeve-fitting the light guide ring is provided on the outer side of the second circular base, and a light-transmitting groove communicating with the inner side of the second circular base is provided at the bottom of the annular groove.

7. The auxiliary injection device of a needle-free syringe according to claim 1, characterized in that: A limiting portion matching the outer edge shape of the needle-free syringe is disposed inside the second circular mounting cavity, and an anti-slip layer is disposed on the side of the limiting portion facing the needle-free syringe to increase the contact friction between the limiting portion and the needle-free syringe.

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