A pre-charged microdose epinephrine injection device

Abstract

The present application relates to injection technology field, specifically to be a kind of pre-filled micro epinephrine injection device, comprising: barrel;Injection positioning assembly, the positioning assembly includes support block, one end of the support block is fixed with support tube, the bottom of the support tube is rotatably installed with handle, one side of the handle is fixed with screw rod.The present application has the effect of completing injection metering control while limiting and fixing the injection state of the syringe, solves the problem of drug loss caused by accidental pressing of the existing syringe, rotates after moving downward by rotating seat, rotates to control the position of fixed block and support block, the protrusion on fixed block is installed at one end of limiting column, and then completes the limiting of limiting column, so as to avoid the waste of drug caused by accidental pressing, in addition, after limiting column enters the inside of support tube, supporting is realized, and the adjustment control of injection metering is completed.

Description

Technical Field

[0001] This invention relates to the field of injection technology, and in particular to a pre-filled micro-volume epinephrine hydrochloride injection device. Background Technology

[0002] The number of new cancer cases worldwide is expected to exceed 35 million, posing a significant threat to human health. Previously, DSA-guided percutaneous arterial infusion or embolization of high-concentration antitumor drugs was widely used clinically. However, how can we reduce chemotherapy drug dosage without compromising efficacy and truly achieve "reduced toxicity and increased efficacy"? In the improved DSA-guided percutaneous arterial intervention, drug infusion or embolization under the protection of a small dose of epinephrine hydrochloride via catheter has been demonstrated by numerous clinical cases. This procedure is simple to perform, shortens surgical time and hospital stay, is safe, effective, inexpensive, highly repeatable, and easily implemented.

[0003] In addition, while killing tumor cells, it also damages the microvessels of normal tissues in the human body. In order to reduce the degree of damage to normal tissue microvessels and protect them before killing tumor cancer cells, a small amount of adrenaline is injected in the early stage. The small amount of adrenaline will cause the α receptors of normal tissue microvessels to contract. After the α receptors contract, their volume is reduced, and the reduced volume will reduce the degree of damage to them. The treatment of cancer cells is completed with minimal damage to normal tissue microvessels.

[0004] According to patent document CN215426633U, a novel aspiration-free epinephrine hydrochloride injector includes a barrel with a pair of locking components inside; a push rod with a shaped groove on it, the locking components engaging with the push rod through the groove; the locking components include a spring mounted on the inner wall of the barrel and a shaped locking plate connected to the spring, the push rod engaging with the locking components through the locking plate, thus fixing the push rod inside the barrel. In use, the locking components and the shaped groove cooperate to securely position the push rod within the barrel, forming a cavity of a certain size between the barrel and the push rod. This cavity holds the medication, eliminating the need for medical personnel to aspirate the medication with the syringe, thus accelerating the rescue process. However, while this solution eliminates the need for aspiration, it cannot effectively limit and fix the syringe during use, and the injection dosage cannot be quickly adjusted during injection. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, the purpose of this invention is to provide a pre-filled micro-volume epinephrine hydrochloride injection device.

[0007] To achieve the above objectives, the present invention provides a pre-filled micro-volume epinephrine hydrochloride injection device, comprising: a cylindrical body; an injection positioning component, the positioning component including a support block, a support tube fixed to one end of the support block, a handle rotatably mounted on the bottom of the support tube, a screw fixed to one side of the handle, a threaded ring rotatably mounted on the screw, and the threaded ring fixedly mounted on the inner wall of the support tube; and a sterilization component including a sterilization chamber, the sterilization chamber having an internal cavity, a sterilization lamp fixedly mounted on the inner wall of the cavity, and a needle movably mounted inside the cavity.

[0008] Preferably, a limiting ring is fixed on the inner wall of the support tube, a support column is movably installed inside the limiting ring, a ring seat is fixed at one end of the support column, a support mechanism is fixed at the bottom of the ring seat, and one end of the support mechanism is fixedly installed on the top of the limiting ring.

[0009] Preferably, a rotating seat is rotatably mounted on the side of the cylinder, one end of the support block is fixedly mounted on the side wall of the rotating seat, a fixing block is fixed on one side of the rotating seat, a protrusion is fixed on the top of the fixing block, a conical column is fixed on the inner wall of the cavity, and the needle is movably mounted on the conical column.

[0010] Preferably, an internal thread is formed on the inner wall of one end of the cylinder, and a threaded cylinder is rotatably installed at the internal thread. A movable seat is fixed to the top of the threaded cylinder, and a movable column is movably installed on the top of the movable seat. A piston seat is fixed to one end of the movable column. A storage battery is fixedly installed inside the cavity, and a wire is installed on the storage battery. A charging port is fixed to one end of the wire.

[0011] Preferably, an injection cylinder is fixed inside the cylindrical body, a piston seat is movably installed inside the injection cylinder, a sealing seat is rotatably installed at one end of the cylindrical body, an injection head is fixed at one end of the sealing seat, and the injection head is connected to the injection cylinder through a connecting pipe.

[0012] Preferably, a positioning column is fixed to the top of the rotating seat, a positioning hole is opened at the bottom of the movable seat, one end of the positioning column is movably installed inside the positioning hole, a rotating cylinder is rotatably installed on the side wall of the cylinder, a force-applying block is fixed on the top side wall of the rotating cylinder, an opening is opened on the side of the rotating cylinder, and a limit block is movably installed inside the opening.

[0013] Preferably, a storage seat is fixed on the side wall of the cylinder, the storage seat is movably installed inside the rotating cylinder, a reset mechanism is fixed on the inner wall of the storage seat, and one end of the reset mechanism is fixedly installed on the limiting block.

[0014] Preferably, a positioning seat is fixed on the side wall of the cylinder, and a rotating ring is rotatably installed at the bottom of the positioning seat. The side of the rotating ring moves and contacts the inner wall of the rotating cylinder, and an annular groove is formed on the side wall of the cylinder.

[0015] Preferably, a convex ring is rotatably mounted inside the annular groove, one end of the convex ring is fixedly mounted on the inner wall of the rotating cylinder, a tension mechanism is fixed at the bottom of the rotating ring, a positioning block is fixed at one end of the tension mechanism, and one end of the positioning block is fixed on the inner wall of the rotating seat.

[0016] Preferably, an observation window is provided on the side wall of the support tube, and a scale line is fixed on the side of the observation window. A connecting block is fixed on the movable column, and a fixing rod is fixed on the side of the connecting block. A reinforcing block is fixed at one end of the fixing rod, and a pressing plate is fixed at one end of the movable column. A limit post is fixed at the bottom of the reinforcing block, and a limit hole is provided at one end of the limit post. The limit hole is movably connected to the protrusion.

[0017] The technical solution provided by this invention may include the following beneficial effects:

[0018] 1. This invention has the effect of limiting and fixing the injection state of the syringe while controlling the injection dosage. It solves the problem of drug loss caused by accidental pressing of existing syringes. By rotating the rotating seat downward, the position of the fixing block and the support block is controlled. The protrusion on the fixing block is installed at one end of the limiting post to limit the limiting post, thereby avoiding drug waste caused by accidental pressing. In addition, after the limiting post enters the support tube, it achieves support and adjusts and controls the injection dosage at the same time.

[0019] 2. This invention has the effect of needle storage and disinfection, solving the problem of needles being easily lost and contaminated when stored separately. By rotating the rotating cylinder, the position of the opening is controlled. When the opening cooperates with the limiting block, the rotating cylinder is limited. When the opening moves to the disinfection box, it is convenient to quickly take out the needles inside.

[0020] 3. This invention has the effect of adjusting the vertical movement distance of the limiting post, solving the problem of needing to constantly observe the injection metering. The rotation of the handle pushes the screw to move up and down, and the vertical movement of the screw pushes the connecting seat to rise and fall. The height of the connecting seat controls the distance the limiting post moves. Later, after the limiting post pushes the connecting seat to move downward, the vertical movement of the connecting seat realizes the rapid return of the pressing plate.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the device structure of a pre-filled micro-volume epinephrine hydrochloride injection device according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of a pre-filled micro-volume epinephrine hydrochloride injection device after the movable seat has been removed, according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the injection positioning component in a pre-filled micro-volume epinephrine hydrochloride injection device according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of a pre-filled micro-volume epinephrine hydrochloride injection device after the rotating cylinder has been removed, according to an embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the rotating cylinder in a pre-filled micro-volume epinephrine hydrochloride injection device according to an embodiment of the present invention;

[0028] Figure 6 This is a magnified structural diagram of point A in a pre-filled micro-volume epinephrine hydrochloride injection device according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the reset mechanism in a pre-filled micro-volume epinephrine hydrochloride injection device according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the limiting column in a pre-filled micro-volume epinephrine hydrochloride injection device according to an embodiment of the present invention.

[0031] As shown in the figure: 1. Cylinder; 2. Rotating seat; 3. Fixed block; 4. Protrusion; 5. Movable seat; 6. Movable column; 7. Connecting block; 8. Pressing plate; 9. Fixed rod; 10. Reinforcing block; 11. Limiting column; 12. Support block; 13. Support tube; 14. Handle; 15. Observation window; 16. Scale line; 17. Rotating cylinder; 18. Force application block; 19. Opening; 20. Limiting block; 21. Sealing seat; 22. Injection head; 23. Threaded cylinder; 24. Internal thread 25. Piston seat; 26. Positioning pin; 27. Limiting ring; 28. Support mechanism; 29. ​​Ring seat; 30. Supporting pin; 31. Threaded ring; 32. Screw; 33. Ring groove; 34. Storage seat; 35. Sterilization box; 36. Cavity; 37. Needle; 38. Charging port; 39. Sterilization lamp; 40. Convex ring; 41. Positioning seat; 42. Rotating ring; 43. Pulling mechanism; 44. Positioning block; 45. Reset mechanism; 46. Conical pin; 47. Limiting hole. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0033] like Figures 1 to 8 As shown, a pre-filled micro-volume epinephrine hydrochloride injection device is characterized by comprising: a cylindrical body 1; an injection positioning assembly, the positioning assembly including a support block 12, a support tube 13 fixed to the bottom of one end of the support block 12, a handle 14 rotatably mounted on the bottom of the support tube 13, a screw 32 fixed to one side of the handle 14, a threaded ring 31 rotatably mounted on the screw 32, and the threaded ring 31 fixedly mounted on the inner wall of the support tube 13; and a sterilization assembly including a sterilization chamber 35, a cavity 36 opened inside the sterilization chamber 35, a sterilization lamp 39 fixedly mounted on the inner wall of the cavity 36, and a needle 37 movably mounted inside the cavity 36.

[0034] It is understandable that as the rotating cylinder 17 rotates, the opening 19 moves to the side of the sterilization box 35, allowing the needle 37 inside to be removed through the opening 19. When the needle 37 is not in use, it is stored on the conical column 46. As the rotating cylinder 17 rotates, it covers and seals the sterilization box 35. Before use, the sterilization lamp 39 is turned on to sterilize the needle 37. Of course, the sterilization lamp 39 can also be started at a time to sterilize the needle 37. The timer can be connected to the existing timer module and the battery to start the sterilization lamp 39 at a time. After the sterilization lamp 39 is started at a time, the time wasted on pre-injection sterilization is saved, and sufficient time is left to sterilize the needle 37.

[0035] While killing tumor cells, it also damages the microvessels of normal tissues in the human body. In order to reduce the degree of damage to normal tissue microvessels, and to protect the normal tissue microvessels before killing tumor cancer cells, a small amount of adrenaline is injected in the early stage. The small amount of adrenaline will cause the α receptors of normal tissue microvessels to contract. After the α receptors contract, their volume is reduced, and the volume reduction reduces the degree of damage to them. The treatment of cancer cells is completed with minimal damage to normal tissue microvessels.

[0036] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 A limiting ring 27 is fixed on the inner wall of the support tube 13. A support column 30 is movably installed inside the limiting ring 27. A ring seat 29 is fixed to one end of the support column 30. A support mechanism 28 is fixed to the bottom of the ring seat 29. One end of the support mechanism 28 is fixedly installed on the top of the limiting ring 27. A rotating seat 2 is rotatably installed on the side of the cylinder 1. One end of the support block 12 is fixedly installed on the side wall of the rotating seat 2. A fixing block 3 is fixed to one side of the rotating seat 2. A protrusion 4 is fixed to the top of the fixing block 3. A conical column 46 is fixed on the inner wall of the cavity 36. A needle 37 is movably installed on the conical column 46. An internal thread 24 is opened on the inner wall of one end of the cylinder 1. A threaded cylinder 23 is rotatably installed at the internal thread 24. A movable seat 5 is fixed on the top of the threaded cylinder 23. A movable column 6 is movably installed on the top of the movable seat 5. A piston seat 25 is fixed on one end of the movable column 6. A storage battery is fixedly installed inside the cavity 36. A wire is installed on the storage battery. A charging port 38 is fixed on one end of the wire.

[0037] It is understandable that when injection is not required in the early stage and the cylinder 1 is moved, the rotating seat 2 is pressed down. The pressing of the rotating seat 2 causes the positioning block 44 to move downward on the side of the cylinder 1. After the positioning block 44 moves downward, it pulls the tension mechanism 43. The tension mechanism 43 is a tension spring. After the tension spring is pulled, it deforms. The deformation of the tension mechanism 43 provides space for the movement of the rotating seat 2. When the rotating seat 2 moves downward, the positioning pin 26 at one end of its top is separated from the positioning hole at the bottom of the movable seat 5. After the rotating seat 2 loses its limit, it rotates. When the rotating seat 2 rotates, it drives the rotating ring 42 to rotate at the bottom of the positioning seat 41 through the positioning block 44 and the tension mechanism 43. The rotation causes the positions of the fixed block 3 and the support block 12 to be interchanged.

[0038] Interventional surgery is required during tumor treatment. After the catheter is inserted into the tumor target blood vessel, a small amount of specially prepared adrenaline is first injected to cause the surrounding normal blood vessels to constrict. At this time, chemotherapy drugs or embolization agents are then injected. More drugs flow to the tumor and less flow to normal tissues. Chemotherapy drugs only need to be 30-70% of the conventional dose to achieve the same tumor-killing effect, reduce damage to normal organs, and achieve reduced toxicity and increased efficacy.

[0039] As the rotating cylinder 17 rotates, the opening 19 moves to the side of the sterilization box 35, allowing the needle 37 inside to be removed. When not in use, the needle 37 is stored on the conical column 46. The rotating cylinder 17 also seals the sterilization box 35. Before use, the sterilization lamp 39 is turned on to sterilize the needle 37. Alternatively, the sterilization lamp 39 can be activated at a set time to sterilize the needle 37. The timer can be connected to the battery via an existing timer module to activate the sterilization lamp 39 at a set time. Activating the sterilization lamp 39 at a set time saves time wasted on pre-injection sterilization, allowing sufficient time to sterilize the needle 37.

[0040] Please see Figure 2 , Figure 4 and Figure 7 An injection cylinder is fixed inside the cylinder body 1. A piston seat 25 is movably installed inside the injection cylinder. A sealing seat 21 is rotatably installed at one end of the cylinder body 1, and an injection head 22 is fixed at one end of the sealing seat 21. The injection head 22 is connected to the injection cylinder through a connecting pipe. A positioning pin 26 is fixed at the top of the rotating seat 2. A positioning hole is opened at the bottom of the movable seat 5. One end of the positioning pin 26 is movably installed inside the positioning hole. A rotating cylinder 17 is rotatably installed on the side wall of the cylinder body 1. A force-applying block 18 is fixed on the top side wall of the rotating cylinder 17. An opening 19 is opened on the side of the rotating cylinder 17. A limit block 20 is movably installed inside the opening 19. A storage seat 34 is fixed on the side wall of the cylinder body 1. The storage seat 34 is movably installed inside the rotating cylinder 17. A reset mechanism 45 is fixed on the inner wall of the storage seat 34. One end of the reset mechanism 45 is fixedly installed on the limit block 20.

[0041] Before injection, by pressing the limiting block 20, the limiting block 20 squeezes the reset mechanism 45. The reset mechanism 45 is a reset spring. After being compressed, the reset spring generates a rebound force. After the limiting block 20 is squeezed and displaced, it enters the interior of the receiving seat 34. One side of the outer wall of the limiting block 20 moves to the inner wall of the rotating cylinder 17. With the limiting block 20 no longer limiting the rotating cylinder 17, the rotating cylinder 17 first enters to one side of the limiting block 20. As the rotating cylinder 17 rotates, the inner wall of the rotating cylinder 17 squeezes and limits the limiting block 20. As the rotating cylinder 17 rotates, the opening 19 moves to the side of the sterilization box 35, and the needle 37 inside is taken out through the opening 19.

[0042] Please see Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 A positioning seat 41 is fixed on the side wall of the cylinder 1. A rotating ring 42 is rotatably mounted on the bottom of the positioning seat 41. The side of the rotating ring 42 moves and contacts the inner wall of the rotating cylinder 17. An annular groove 33 is opened on the side wall of the cylinder 1. A protruding ring 40 is rotatably mounted inside the annular groove 33. One end of the protruding ring 40 is fixedly mounted on the inner wall of the rotating cylinder 17. A tension mechanism 43 is fixed to the bottom of the rotating ring 42. A positioning block 44 is fixed to one end of the tension mechanism 43. One end of the positioning block 44 is fixed to the inner wall of the rotating seat 2. An observation window 15 is provided on the side wall of the support tube 13. A scale line 16 is fixed on the side of the observation window 15. A connecting block 7 is fixed on the movable column 6. A fixing rod 9 is fixed on the side of the connecting block 7. A reinforcing block 10 is fixed at one end of the fixing rod 9. A pressing plate 8 is fixed at one end of the movable column 6. A limiting post 11 is fixed at the bottom of the reinforcing block 10. A limiting hole 47 is provided at one end of the limiting post 11. The limiting hole 47 is movably connected to the protrusion 4.

[0043] Understandably, the injection dosage is controlled by the scale lines 16 and the observation window 15, specifically adapted for tumor treatment surgery. Each scale line 16 is 10μg apart, and the commonly used dosage is controlled by the coordination of the scale lines 16. Commonly used dosages include 10μg, 20μg, 40μg, 60μg, and 80μg. During use, after the support block 12 and the fixing block 3 are swapped, the protrusion 4 on the fixing block 3 moves to the bottom of the limiting post 11. Later, the rotating seat 2 is released, and under the drive of the pulling mechanism 43, the rotating seat 2 moves upward to return to its original position. The positioning post 26 re-enters the positioning hole for limitation, and the protrusion 4 on the fixing block 3 enters the interior of the limiting hole 47. The protrusion 4 limits and fixes the limiting post 11. When the support block 12 and the fixing block 3 are not swapped, the connecting seat 29 inside the support tube 13 can also limit the limiting post 11. However, adjusting the connecting seat 29 back and forth during later injections can cause... This avoids wasting a lot of time. The pressure plate 8 can be quickly limited by switching the positions of the fixed block 3 and the support block 12. The needle 37 is installed on the injection head 22 for subsequent injection. During injection, the pressure plate 8 pushes the movable column 6 downwards, causing the limiting column 11 to enter the support tube 13. The limiting column 11 presses against the connecting seat 29. When one end of the support column 30 contacts the screw 32, it stops moving, and the syringe stops injecting. This allows for bold and rapid injection. After one injection, when the limiting column 11 needs to be fixed, the rotating seat 2 moves downwards and rotates, exchanging the positions of the fixed block 3 and the support block 12. After the exchange, the limiting column 11 is supported, reducing the time wasted by rotating the handle 14 and screw 32 back and forth, thus saving operation time. Ordinary commercially available adrenaline injection solutions have too large a dosage and are not suitable for micro-injection via interventional catheters.

[0044] Working principle: During tumor treatment, an interventional procedure is required. After the catheter is inserted into the tumor target blood vessel, a small amount of specially formulated adrenaline is first injected to cause the surrounding normal blood vessels to constrict. Then, chemotherapy drugs or embolizing agents are injected, allowing more drugs to flow to the tumor and less to normal tissue. Only 30-70% of the conventional chemotherapy dose is needed to achieve the same tumor-killing effect, reducing damage to normal organs and achieving reduced toxicity and increased efficacy. During use, the medication is pre-drawn into the syringe. Alternatively, pre-filled medication can be delivered into the syringe using a sealed method. Later, the piston seat 25 crushes the pre-filled medication, directly completing the injection. After the medication is placed inside the syringe, the syringe is distributed inside the syringe body 1, with a gap between the syringe and the syringe body 1. The injection tube and the cylinder 1 are distributed in a double ring state. When injection is not required in the early stage and the cylinder 1 is moved, the rotating seat 2 is pressed down. The rotating seat 2 is pressed down and drives the positioning block 44 to move down on the side of the cylinder 1. After the positioning block 44 moves down, it pulls the tension mechanism 43. The tension mechanism 43 is a tension spring. The tension spring deforms after being pulled. The deformation of the tension mechanism 43 provides space for the movement of the rotating seat 2. When the rotating seat 2 moves down, the positioning pin 26 at one end of its top is separated from the positioning hole at the bottom of the movable seat 5. After the rotating seat 2 loses its limit, it rotates. When the rotating seat 2 rotates, it drives the rotating ring 42 to rotate at the bottom of the positioning seat 41 through the positioning block 44 and the tension mechanism 43. The rotation causes the positions of the fixed block 3 and the support block 12 to be interchanged.

[0045] After the support block 12 and the fixed block 3 are swapped, the protrusion 4 on the fixed block 3 moves to the bottom of the limiting post 11. Later, the rotating seat 2 is released, and under the drive of the pulling mechanism 43, the rotating seat 2 moves upward to return to its original position. The positioning post 26 re-enters the positioning hole for limitation, and the protrusion 4 on the fixed block 3 enters the interior of the limiting hole 47. The protrusion 4 limits and fixes the limiting post 11. When the support block 12 and the fixed block 3 are not swapped, the connecting seat 29 inside the support tube 13 can also limit the limiting post 11. However, adjusting the connecting seat 29 back and forth during later injection causes a lot of time waste. Therefore, the pressing plate 8 can be quickly limited by switching the positions of the fixed block 3 and the support block 12. When injection is needed later, injection can be performed as required. The position of the dose control connector 29 is determined by the screw 32 moving downward via the handle 14. After the screw 32 moves downward, the support column 30 loses its support. The deformation of the support mechanism 28 causes the support column 30 and the connector 29 to move downward. The support mechanism 28 is a support spring. The support spring uses its rebound force to drive the support column 30 to return to its original position. The position of the connector 29 can be quickly determined through the observation window 15. The distance the limit column 11 moves downward is controlled by the position of the scale line 16. The injection dose is controlled by the scale line 16 and the observation window 15. The injection is specially adapted for tumor treatment surgery. Commonly used doses include 10μg, 20μg, 40μg, 60μg, and 80μg.

[0046] Before injection, pressing the limiting block 20 compresses the reset mechanism 45, which is a reset spring. The reset spring, when compressed, generates a rebound force, causing the limiting block 20 to displace and enter the housing 34. One side of the outer wall of the limiting block 20 moves to the inner wall of the rotating cylinder 17. With the limiting block 20 no longer in place, the rotating cylinder 17 preferentially enters one end of the limiting block 20. As the rotating cylinder 17 rotates, its inner wall compresses and limits the limiting block 20. The rotation of the rotating cylinder 17 also moves the opening 19 into the sterilization chamber. The needle 37 can be removed from the side of the 35 through the opening 19. When the needle 37 is not in use, it is stored on the conical column 46. As the rotating cylinder 17 rotates, it covers and seals the sterilization box 35. Before use, the sterilization lamp 39 is turned on to sterilize the needle 37. Of course, the sterilization lamp 39 can also be turned on at a time to sterilize the needle 37. The timer can be connected to the existing timer module and the battery to realize the timer start of the sterilization lamp 39. After the sterilization lamp 39 is turned on at a time, the time wasted on the pre-injection sterilization is saved, and sufficient time is left to sterilize the needle 37.

[0047] The needle 37 is installed on the injection head 22 to achieve subsequent injection. During injection, the pressing plate 8 pushes the movable column 6 downward. The downward movement of the movable column 6 causes the limiting column 11 to enter the interior of the support tube 13. The limiting column 11 presses the connecting seat 29. When one end of the support column 30 contacts the screw 32, it stops moving. After the movement stops, the syringe stops injecting, allowing for bold and rapid pressing for injection. When it is necessary to limit and fix the limiting column 11 after one injection, the rotating seat 2 moves downward and rotates. The rotation causes the fixing block 3 and the support block 12 to exchange positions. After the exchange, the limiting column 11 is supported, thereby reducing the time wasted by rotating the handle 14 and the screw 32 back and forth, thus saving operation time.

[0048] In the description of this invention, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0049] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0050] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pre-filled micro-volume epinephrine hydrochloride injection device, characterized in that, include: Cylinder (1); An injection positioning assembly includes a support block (12), a support tube (13) is fixed to the bottom of one end of the support block (12), a handle (14) is rotatably mounted on the bottom of the support tube (13), a screw (32) is fixed to one side of the handle (14), a threaded ring (31) is rotatably mounted on the screw (32), and the threaded ring (31) is fixedly mounted on the inner wall of the support tube (13). The sterilization component includes a sterilization box (35), the sterilization box (35) has a cavity (36) inside, a sterilization lamp (39) is fixedly installed on the inner wall of the cavity (36), and a needle (37) is movably installed inside the cavity (36).

2. The pre-filled micro-volume epinephrine hydrochloride injection device according to claim 1, characterized in that, A limiting ring (27) is fixed on the inner wall of the support tube (13). A support column (30) is movably installed inside the limiting ring (27). A ring seat (29) is fixed at one end of the support column (30). A support mechanism (28) is fixed at the bottom of the ring seat (29). One end of the support mechanism (28) is fixedly installed on the top of the limiting ring (27).

3. The pre-filled micro-volume epinephrine hydrochloride injection device according to claim 1, characterized in that, A rotating seat (2) is rotatably mounted on the side of the cylinder (1). One end of the support block (12) is fixedly mounted on the side wall of the rotating seat (2). A fixing block (3) is fixed on one side of the rotating seat (2). A protrusion (4) is fixed on the top of the fixing block (3). A conical column (46) is fixed on the inner wall of the cavity (36). The needle (37) is movably mounted on the conical column (46).

4. A pre-filled micro-volume epinephrine hydrochloride injection device according to claim 3, characterized in that, The inner wall of one end of the cylinder (1) has an internal thread (24), and a threaded cylinder (23) is rotatably installed at the internal thread (24). A movable seat (5) is fixed at the top of the threaded cylinder (23), and a movable column (6) is movably installed at the top of the movable seat (5). A piston seat (25) is fixed at one end of the movable column (6). A storage battery is fixedly installed inside the cavity (36), and a wire is installed on the storage battery. A charging port (38) is fixed at one end of the wire.

5. A pre-filled micro-volume epinephrine hydrochloride injection device according to claim 4, characterized in that, An injection cylinder is fixed inside the cylinder (1), and a piston seat (25) is movably installed inside the injection cylinder. A sealing seat (21) is rotatably installed at one end of the cylinder (1), and an injection head (22) is fixed at one end of the sealing seat (21). The injection head (22) is connected to the injection cylinder through a connecting pipe.

6. A pre-filled micro-volume epinephrine hydrochloride injection device according to claim 4, characterized in that, The top of the rotating seat (2) is fixed with a positioning column (26), the bottom of the movable seat (5) is provided with a positioning hole, one end of the positioning column (26) is movably installed inside the positioning hole, and a rotating cylinder (17) is rotatably installed on the side wall of the cylinder (1). Among them, a force-applying block (18) is fixed on the top side wall of the rotating cylinder (17), and an opening (19) is opened on the side of the rotating cylinder (17). A limit block (20) is movably installed inside the opening (19).

7. A pre-filled micro-volume epinephrine hydrochloride injection device according to claim 6, characterized in that, A storage seat (34) is fixed on the side wall of the cylinder (1). The storage seat (34) is movably installed inside the rotating cylinder (17). A reset mechanism (45) is fixed on the inner wall of the storage seat (34). One end of the reset mechanism (45) is fixedly installed on the limiting block (20).

8. A pre-filled micro-volume epinephrine hydrochloride injection device according to claim 6, characterized in that, A positioning seat (41) is fixed on the side wall of the cylinder (1). A rotating ring (42) is rotatably installed at the bottom of the positioning seat (41). The side of the rotating ring (42) moves and contacts the inner wall of the rotating cylinder (17). A ring groove (33) is opened on the side wall of the cylinder (1).

9. A pre-filled micro-volume epinephrine hydrochloride injection device according to claim 8, characterized in that, A convex ring (40) is rotatably mounted inside the annular groove (33). One end of the convex ring (40) is fixedly mounted on the inner wall of the rotating cylinder (17). A tension mechanism (43) is fixed at the bottom of the rotating ring (42). A positioning block (44) is fixed at one end of the tension mechanism (43). One end of the positioning block (44) is fixed on the inner wall of the rotating seat (2).

10. A pre-filled micro-volume epinephrine hydrochloride injection device according to claim 4, characterized in that, An observation window (15) is provided on the side wall of the support tube (13). A scale line (16) is fixed on the side of the observation window (15). A connecting block (7) is fixed on the movable column (6). A fixing rod (9) is fixed on the side of the connecting block (7). A reinforcing block (10) is fixed at one end of the fixing rod (9). A pressing plate (8) is fixed at one end of the movable column (6). A limiting post (11) is fixed at the bottom of the reinforcing block (10). A limiting hole (47) is provided at one end of the limiting post (11). The limiting hole (47) is movably connected to the protrusion (4).

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