A fully automatic intelligent high-pressure needleless injector

Abstract

This invention relates to the field of auto-injector technology and discloses a fully automatic intelligent high-pressure needleless injector, comprising a main body, a needleless injection head detachably mounted on the injection end of the main body, a gripping drive assembly disposed in the middle of the inner cavity of the main body, and an impact assembly connected to the gripping drive assembly disposed in the inner cavity of the main body at the end away from the needleless injection head, and a charging assembly disposed on the inner cavity and outer end of the main body on the same side as the impact assembly; the invention, by providing a gripping drive assembly and an impact assembly, facilitates users to set the required drug injection volume and injection pressure parameters via a mobile APP, and transmits the information to the injector's control module via Bluetooth communication. The control module analyzes the received injection volume and injection pressure parameters and realizes an intelligent integrated control process for automatic drug replenishment and automatic injection of the needleless injector, improving the control capability of drug injection dosage and force.

Description

Technical Field

[0001] This invention relates to the field of automatic injector technology, and more specifically to a fully automatic intelligent high-pressure needleless injector. Background Technology

[0002] A needle-free injector is a syringe that uses high-pressure airflow to spray medication under the skin. Compared with traditional syringes, needle-free injectors do not require needles, thus avoiding the pain and infection risks associated with needles.

[0003] For example, Chinese invention patent CN115429974B discloses a needle-free injector, including an injection assembly and a locking device. The injection assembly includes an injection chamber housing and a piston assembly. The injection chamber housing forms an injection chamber and has an injection micro-hole at its front end that communicates with the outside and the injection chamber. The piston assembly is disposed in the injection chamber and can move between a first position close to the injection micro-hole and a second position away from the injection micro-hole. The locking device can keep the piston assembly in a locked state during the process of the piston assembly moving from the first position to the second position, and can automatically unlock the piston assembly when the piston assembly reaches the second position. When the piston assembly is in the locked state, it is restricted from returning to the first position, and when the piston assembly is unlocked, it can be driven back to the first position. The needle-free injector according to the above solution can conveniently keep the piston assembly in a locked state when it moves from the first position to the second position, so as to facilitate pressurization and energy storage for subsequent injections.

[0004] However, there are still some shortcomings in the needle-free injectors currently available on the market and their usage: when drug injection is required, the user manually operates the device to push the drug delivery rod to push the piston, which pushes the drug in the storage chamber into the injection chamber to prepare for drug injection. This is not enough to control the injection volume and injection pressure, and the level of intelligence is insufficient.

[0005] Therefore, there is an urgent need for a new type of fully automatic intelligent high-pressure needleless injector, which allows users to set specific parameter values ​​according to their needs for drug injection volume and injection pressure, so as to realize an intelligent drug injection process with automatic drug replenishment and automatic injection by the needleless injector. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fully automatic intelligent high-pressure needle-free injector to solve the problems of insufficient control over injection volume and injection pressure, excessive manual intervention steps, cumbersome operation, and insufficient intelligence in the prior art.

[0007] The present invention provides the following technical solution: a fully automatic intelligent high-pressure needleless injector, comprising a main body, wherein a needleless injection head is detachably installed at the injection end of the main body, a gripping drive component is provided in the middle of the inner cavity of the main body, and an impact component connected to the gripping drive component is also installed in the inner cavity of the main body at the end away from the needleless injection head, and a charging component is installed in the inner cavity and the outer end of the main body on the same side as the impact component.

[0008] The main body includes an injection cylinder and a spring. The inner wall of the injection end of the injection cylinder is provided with a threaded groove for threaded connection of the injection tube, and a spring installed on the side wall of the injection end of the injection cylinder is sleeved around the injection end of the injection cylinder.

[0009] The gripping drive assembly includes an I-shaped fixed cylinder, a first control circuit board, a piezoelectric motor stator, a piezoelectric motor mover, a bearing, and a three-grip screw. The I-shaped fixed cylinder is fixedly sleeved in the inner cavity of the injection cylinder. The first control circuit board and the piezoelectric motor stator electrically connected to the first control circuit board are sequentially installed on the outer wall of the I-shaped fixed cylinder near the needleless injection head. A piezoelectric motor mover capable of rotating in the forward or reverse direction is movably arranged on the side of the piezoelectric motor stator away from the first control circuit board. The piezoelectric motor mover is installed in the inner cavity of the injection cylinder through the bearing. A three-grip screw for gripping the push rod is movably arranged inside the piezoelectric motor mover.

[0010] The impact assembly includes a soft magnet, a guide post impact head, a voice coil motor mover winding, a permanent magnet, and a second control circuit board. The second control circuit board is fixedly installed in the inner cavity of the injection cylinder. A soft magnet is fixedly installed between the second control circuit board and the I-shaped fixed cylinder, and the soft magnet communicates with the inner cavity of the I-shaped fixed cylinder. A guide post impact head that can extend outward or retract inward is movably sleeved in the inner cavity of the soft magnet. The guide post impact head is movably sleeved with a permanent magnet installed at the center of the side wall of the second control circuit board. The surface of the guide post impact head is wound with a voice coil motor mover winding.

[0011] Furthermore, the needle-free injection head includes an injection tube, a limiting cap, and a push rod. The outer end of the injection tube is provided with a capillary hole for injecting or drawing medication. The end of the injection tube near the injection cylinder is also fixedly connected to a limiting cap, which is movably sleeved on the outer wall of the injection end of the injection cylinder. In addition, a push rod is movably sleeved in the inner cavity of the injection tube.

[0012] Furthermore, the main body also includes a positioning sensor, and the end side wall of the syringe is also provided with a positioning sensor for detecting whether the limiting cap has been screwed into place through the injection tube.

[0013] Furthermore, the injection tube is equipped with a volume detector for detecting the amount of drug being extracted.

[0014] Furthermore, the three-grip screw is integrally injection molded from the screw and the gripper. The piezoelectric motor mover is coaxially arranged with the three-grip screw and the two are threaded together. The inner wall of the piezoelectric motor mover through which the three-grip screw moves is set as a complete circular screw groove. The screw section of the three-grip screw is a rounded rectangle and only its upper and lower surfaces are provided with threads that are adapted to the screw grooves on the inner wall of the piezoelectric motor mover. In addition, an opening for the three-grip screw to move through is opened at the center of the I-shaped fixed cylinder.

[0015] Furthermore, an infrared transmitter is provided on the inner wall of the I-shaped fixed cylinder, and an infrared receiver is provided on the side wall of the three-grip screw away from its gripper to detect the infrared signal emitted by the infrared transmitter.

[0016] Furthermore, a pressure sensor is provided on the inner wall of the soft magnet near the end of the second control circuit board to sense whether the guide post impact head has arrived.

[0017] Furthermore, the charging assembly includes a wireless charging base, an inductive charging coil, and a lithium battery. The wireless charging base is movably disposed at the end of the injection cylinder, an inductive charging coil is fixedly installed inside the inductive charging coil, and the lithium battery is disposed in the interlayer between the soft magnet and the injection cylinder.

[0018] The technical effects and advantages of this invention are as follows:

[0019] This invention, by incorporating a gripping drive component and an impact component, allows users to set the required injection volume and pressure parameters via a mobile app. These parameters are then transmitted to the syringe's control module via Bluetooth. The control module analyzes the received injection volume and pressure parameters, enabling intelligent integrated control of the needle-free syringe for automatic drug replenishment and injection, thus improving the ability to control the dosage and force of drug injection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the overall structure and a partial cross-sectional view of the present invention.

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle.

[0023] Figure 4 This is a schematic diagram showing the unfolded structure of the grasping drive component of the present invention.

[0024] Figure 5 For the present invention Figure 2 Schematic diagram of deep cross-section of the medium structure.

[0025] Figure 6 This is a schematic diagram of the fully automated intelligent high-pressure electronic needle-free injection process of the present invention.

[0026] Figure 7 For the present invention Figure 6 A flowchart illustrating the assembly and parameter setting stages of the process.

[0027] Figure 8 For the present invention Figure 6 A schematic diagram of the positioning, calibration, and testing phases in the process.

[0028] Figure 9 For the present invention Figure 6 A flowchart illustrating the drug extraction stage of the process.

[0029] Figure 10 For the present invention Figure 6 A schematic diagram of the drug injection stage in the process.

[0030] The attached figures are labeled as follows: 1. Main body; 101. Injection cylinder; 102. Spring; 103. Position sensor; 2. Needleless injection head; 201. Injection tube; 202. Limit cap; 203. Push rod; 3. Gripping drive assembly; 301. I-shaped fixing cylinder; 302. First control circuit board; 303. Piezoelectric motor stator; 304. Piezoelectric motor mover; 305. Bearing; 306. Three-grip screw; 4. Impact assembly; 401. Soft magnet; 402. Guide post impact head; 403. Voice coil motor mover winding; 404. Permanent magnet; 405. Second control circuit board; 5. Charging assembly; 501. Wireless charging base; 502. Inductive charging coil; 503. Lithium battery. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The fully automatic intelligent high-pressure needleless injector involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Reference Figure 1-10 The present invention provides a fully automatic intelligent high-pressure needleless injector, including a main body 1, a needleless injection head 2 detachably installed at the injection end of the main body 1, a gripping drive assembly 3 provided in the middle of the inner cavity of the main body 1, an impact assembly 4 connected to the gripping drive assembly 3 installed in the inner cavity of the main body 1 away from the needleless injection head 2, and a charging assembly 5 installed in the inner cavity and outer end of the main body 1 on the same side as the impact assembly 4.

[0033] The main body 1 includes an injection cylinder 101, a spring 102, and a position sensor 103. The inner wall of the injection end of the injection cylinder 101 is provided with a threaded groove for threaded connection of the injection tube 201. The outer periphery of the injection end of the injection cylinder 101 is fitted with a spring 102 installed on the side wall of the end of the injection cylinder 101. The side wall of the end of the injection cylinder 101 is also provided with a position sensor 103 for detecting whether the limit cap 202 is tightened into place by the injection tube 201.

[0034] The needleless injection head 2 includes an injection tube 201, a limiting cap 202, and a push rod 203. The outer end of the injection tube 201 is provided with a capillary hole for injecting or drawing medicine. The end of the injection tube 201 near the injection cylinder 101 is also fixedly connected to the limiting cap 202, and the limiting cap 202 is movably sleeved on the outer wall of the injection end of the injection cylinder 101. As the injection tube 201 is screwed inward along the screw groove of the injection end of the injection cylinder 101, the limiting cap 202 will gradually compress the spring 102 provided on the periphery of the injection end of the injection cylinder 101 until the limiting cap 202 touches the position sensor 103 on the inner wall of the injection cylinder 101, thus completing the assembly of the needleless injection head 2 on the injection end of the injection cylinder 101. In addition, the push rod 203 is movably sleeved in the inner cavity of the injection tube 201.

[0035] The syringe 101 is also equipped with a start button, an injection button, a reset button, a control module, and a buzzer;

[0036] The injection tube 201 is equipped with a volume detector for detecting the amount of drug being extracted.

[0037] Reference Figure 2-5 The gripping drive assembly 3 includes an I-shaped fixed cylinder 301, a first control circuit board 302, a piezoelectric motor stator 303, a piezoelectric motor mover 304, a bearing 305, and a three-grip screw 306. The I-shaped fixed cylinder 301 is fixedly sleeved in the inner cavity of the injection cylinder 101. The first control circuit board 302 and the piezoelectric motor stator 303 electrically connected to the first control circuit board 302 are sequentially installed on the outer wall of the I-shaped fixed cylinder 301 near the needleless injection head 2. The piezoelectric motor mover 304, which can rotate forward or backward, is movably arranged on the side of the piezoelectric motor stator 303 away from the first control circuit board 302. The piezoelectric motor mover 304 is installed in the inner cavity of the injection cylinder 101 through the bearing 305. The three-grip screw 306 for gripping the push rod 203 is movably arranged inside the piezoelectric motor mover 304.

[0038] The three-grip screw 306 is integrally injection molded from the screw and the gripper. The piezoelectric motor mover 304 is coaxially arranged with the three-grip screw 306 and the two are threaded together. The inner wall of the piezoelectric motor mover 304 through which the three-grip screw 306 moves is set as a complete circular screw groove. The screw section of the three-grip screw 306 is a rounded rectangle and only the upper and lower surfaces are provided with threads that are adapted to the screw grooves on the inner wall of the piezoelectric motor mover 304. In addition, the I-shaped fixed cylinder 301 has an opening in the center for the three-grip screw 306 to move through.

[0039] An infrared transmitter is provided on the inner wall of the I-shaped fixed cylinder 301, and an infrared receiver is provided on the side wall of the three-grip screw 306 away from its gripper to detect the infrared signal emitted by the infrared transmitter.

[0040] The impact assembly 4 includes a soft magnet 401, a guide post impact head 402, a voice coil motor mover winding 403, a permanent magnet 404, and a second control circuit board 405. The second control circuit board 405 is fixedly installed in the inner cavity of the injection cylinder 101. The soft magnet 401 is fixedly installed between the second control circuit board 405 and the I-shaped fixed cylinder 301, and the soft magnet 401 communicates with the inner cavity of the I-shaped fixed cylinder 301. The guide post impact head 402, which can extend outward or retract inward, is movably sleeved in the inner cavity of the soft magnet 401. The guide post impact head 402 is movably sleeved with the permanent magnet 404 installed in the center of the side wall of the second control circuit board 405. The voice coil motor mover winding 403 is wound on the surface of the guide post impact head 402.

[0041] The inner wall of the soft magnet 401 near the second control circuit board 405 is provided with a pressure sensor for sensing whether the guide post impact head 402 has arrived.

[0042] The charging component 5 includes a wireless charging base 501, an inductive charging coil 502, and a lithium battery 503. The wireless charging base 501 is movably disposed at the end of the injection cylinder 101. An inductive charging coil 502 is fixedly installed inside the inductive charging coil 502. The lithium battery 503 is disposed in the interlayer between the soft magnet 401 and the injection cylinder 101.

[0043] Working principle of this invention:

[0044] S1. Assembly and setting stage: The user presses the start button, the equipment starts, and the user manually screws the injection tube 201 onto the injection end of the injection cylinder 101 through the limit cap 202. As the injection tube 201 is screwed inward along the screw groove of the injection end of the injection cylinder 101, the limit cap 202 will gradually compress the spring 102 set on the outside of the screw groove of the injection cylinder 101 until the limit cap 202 touches the position sensor 103 on the inner wall of the injection cylinder 101. At this time, it is determined that the injection tube 201 is completely screwed onto the surface of the screw groove of the injection end of the injection cylinder 101, and the position sensor 103 outputs position sensing information to the control module.

[0045] S2, Parameter Setting Stage: The Bluetooth module inside the syringe completes wireless pairing and connection with the mobile phone via Bluetooth. The user sets the required injection volume and injection pressure information through the mobile APP, and transmits the information to the control module of the syringe via Bluetooth communication. The control module analyzes the received injection volume and injection pressure parameter information and generates the appropriate liquid extraction capacity and current intensity information required for punching. Then, it adjusts the capacity threshold of the volume detector located in the injection tube 201 and the intensity threshold of the current flowing in the voice coil motor mover winding 403 to set the drug extraction volume of the injection tube 201 and the punching pressure of the guide post impact head 402.

[0046] S3. Positioning Calibration and Detection Stage: When the infrared receiver installed inside the side wall of the three-grip screw 306 away from its gripper moves laterally and aligns with the infrared transmitter installed on the inner wall of the I-shaped fixed cylinder 301, it is determined that the piezoelectric motor mover 304 at the front end of the piezoelectric motor stator 303 and the three-grip screw 306 threadedly connected to it are in the initial position. Then the infrared receiver outputs calibration and matching information to the control module. At the same time, when the end of the guide post impact head 402 close to the second control circuit board 405 touches and squeezes the pressure sensor installed on the inner wall of the soft magnet 401, it is determined that the guide post impact head 402 retracts to the side close to the permanent magnet 404 and is sleeved on the surface of the permanent magnet 404 under the magnetic attraction of the voice coil motor mover winding 403 and the permanent magnet 404. Then the pressure sensor outputs pressure sensing information to the control module.

[0047] S4. Drug Extraction Stage: The control module simultaneously receives position sensing information, calibration matching information, and pressure sensing information, and outputs control commands to the first control circuit board 302. The first control circuit board 302 adjusts the magnetic field strength and direction of the piezoelectric motor stator 303, causing the piezoelectric motor mover 304 to obtain bidirectional driving force. Then, the piezoelectric motor mover 304 first spins forward, causing the three-grip screw 306, which is threaded inside it, to move towards the injection end until the three-grip screw 306 grips the drug. After the push rod 203 is movably connected to the inner cavity of the injection tube 201, the piezoelectric motor mover 304 rotates in the opposite direction, causing the three-grip screw 306 threaded inside to pull the push rod 203 to move closer to the piezoelectric motor mover 304. As the push rod 203 is pulled inward and gradually detaches from the inner cavity of the injection tube 201, a negative pressure is formed between the inner cavity of the injection tube 201 and the inner cavity of the push rod 203, thereby drawing the drug into the inner cavity of the injection tube 201 through the capillary at the end of the injection tube 201 for drug extraction.

[0048] S5. Liquid extraction completion stage: When the amount of drug extracted from the inner cavity of the injection tube 201 reaches the capacity threshold of the volume detector, the volume detector outputs capacity judgment information to the control module. The controller receives the capacity judgment information and outputs control commands to the first control circuit board 302 and the buzzer. The first control circuit board 302 adjusts the field strength of the piezoelectric motor stator 303 to stop the piezoelectric motor mover 304 from driving, and at the same time controls the buzzer to sound an alarm, indicating that the amount of drug extracted has reached the preset value.

[0049] S5, Drug Injection Stage: The user receives a buzzer alarm and manually presses the injection button to output an injection signal to the control module. The control module receives the injection signal and outputs control commands to the second control circuit board 405. The second control circuit board 405 adjusts the magnetic field strength and direction of the voice coil motor rotor winding 403, causing the guide post impact head 402 and the voice coil motor rotor winding 403 wound around the surface of the guide post impact head 402 to push the push rod 203, which is gripped by the three-grip screw 306, outward with a preset punching pressure. This causes the push rod 203 to quickly detach from the three-grip screw 306 and inject the drug drawn into the inner cavity of the injection tube 201 into the human muscle layer under high pressure.

[0050] S6. Injection complete: The user unscrews the needleless injection head 2 from the injection end of the syringe 101 and presses the reset button of the syringe to reset the gripping drive assembly 3 and the impact assembly 4 to their initial state. If there is a power shortage, the device needs to be recharged through the charging assembly 5 so that it can be put back into use immediately next time.

[0051] The above is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, in accordance with the technical plan and its improved concept, should be included under the protection of the present invention.

Claims

1. A fully automatic intelligent high-pressure needle-free injector, comprising a main body (1), characterized in that: The injection end of the main body (1) is detachably equipped with a needleless injection head (2). A gripping drive assembly (3) is provided in the middle of the inner cavity of the main body (1). An impact assembly (4) connected to the gripping drive assembly (3) is also installed in the inner cavity of the main body (1) away from the needleless injection head (2). A charging assembly (5) is installed in the inner cavity and outer end of the main body (1) on the same side as the impact assembly (4). The main body (1) includes an injection cylinder (101) and a spring (102). The inner wall of the injection end of the injection cylinder (101) is provided with a threaded groove for threaded connection of the injection tube (201), and the outer periphery of the injection end of the injection cylinder (101) is fitted with a spring (102) installed on the side wall of the end of the injection cylinder (101). The gripping drive assembly (3) includes an I-shaped fixed cylinder (301), a first control circuit board (302), a piezoelectric motor stator (303), a piezoelectric motor mover (304), a bearing (305), and a three-grip screw (306). The I-shaped fixed cylinder (301) is fixedly sleeved in the inner cavity of the injection cylinder (101), and the first control circuit board (302) and a bearing connected to the first control screw are sequentially installed on the outer wall of the I-shaped fixed cylinder (301) near the needleless injection head (2). A piezoelectric motor stator (303) is electrically connected to a control circuit board (302). A piezoelectric motor mover (304) capable of rotating in the forward or reverse direction is movably disposed on the side of the piezoelectric motor stator (303) away from the first control circuit board (302). The piezoelectric motor mover (304) is mounted in the inner cavity of the injection cylinder (101) through a bearing (305). A three-grip screw (306) for gripping the push rod (203) is movably disposed inside the piezoelectric motor mover (304). The impact assembly (4) includes a soft magnet (401), a guide post impact head (402), a voice coil motor mover winding (403), a permanent magnet (404), and a second control circuit board (405). The second control circuit board (405) is fixedly installed in the inner cavity of the injection cylinder (101). The soft magnet (401) is fixedly installed between the second control circuit board (405) and the I-shaped fixed cylinder (301), and the soft magnet (401) communicates with the inner cavity of the I-shaped fixed cylinder (301). The guide post impact head (402), which can extend outward or retract inward, is movably sleeved in the inner cavity of the soft magnet (401). The guide post impact head (402) is movably sleeved with the permanent magnet (404) installed in the center of the side wall of the second control circuit board (405). The surface of the guide post impact head (402) is wound with a voice coil motor mover winding (403).

2. The full-automatic intelligent high-pressure needleless injector according to claim 1, characterized in that: The needleless injection head (2) includes an injection tube (201), a limiting cap (202), and a push rod (203). The outer end of the injection tube (201) is provided with a capillary hole for injecting or drawing medicine. The end of the injection tube (201) near the injection cylinder (101) is also fixedly connected to the limiting cap (202), and the limiting cap (202) is movably sleeved on the outer wall of the injection end of the injection cylinder (101). In addition, the push rod (203) is movably sleeved in the inner cavity of the injection tube (201).

3. The full-automatic intelligent high-pressure needleless injector according to claim 2, characterized in that: The main body (1) also includes a position sensor (103), and the end side wall of the injection tube (101) is also provided with a position sensor (103) for detecting whether the limiting cap (202) is screwed into place through the injection tube (201).

4. The full-automatic intelligent high-pressure needleless injector according to claim 2, characterized in that: The injection tube (201) is equipped with a volume detector for detecting the amount of drug being extracted.

5. The full-automatic intelligent high-pressure needleless injector according to claim 1, characterized in that: The three-grip screw (306) is integrally injection molded from the screw and the gripper. The piezoelectric motor mover (304) is coaxially arranged with the three-grip screw (306) and the two are threaded together. The inner wall of the piezoelectric motor mover (304) through which the three-grip screw (306) moves is set as a complete circular screw groove. The screw section of the three-grip screw (306) is a rounded rectangle and only the upper and lower surfaces are provided with threads that are adapted to the screw grooves on the inner wall of the piezoelectric motor mover (304). In addition, the center of the I-shaped fixed cylinder (301) has an opening for the three-grip screw (306) to move through.

6. The full-automatic intelligent high-pressure needleless injector according to claim 1, characterized in that: An infrared transmitter is provided on the inner wall of the I-shaped fixed cylinder (301), and an infrared receiver is provided on the side wall of the three-grip screw (306) away from its gripper to detect the infrared signal emitted by the infrared transmitter.

7. The full-automatic intelligent high-pressure needleless injector according to claim 1, characterized in that: The inner wall of the soft magnet (401) near the second control circuit board (405) is provided with a pressure sensor for sensing whether the guide post impact head (402) has arrived.

8. The full-automatic intelligent high-pressure needleless injector according to claim 1, characterized in that: The charging assembly (5) includes a wireless charging base (501), an inductive charging coil (502), and a lithium battery (503). The wireless charging base (501) is movably disposed at the end of the injection cylinder (101). An inductive charging coil (502) is fixedly installed inside the inductive charging coil (502). The lithium battery (503) is disposed in the interlayer between the soft magnet (401) and the injection cylinder (101).

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