Electronic injection pen

Abstract

The utility model relates to the field of medical instruments, and provides an electronic injection pen which comprises a main body, a clamping type bottle, a fixing cylinder and an injection assembly. The hidden needle is inserted into the cartridge bottle, the cartridge bottle is fixedly sleeved with the fixing cylinder, at least part of the fixing cylinder is inserted into the main body, a driving piece is installed in the main body, a driving shaft of the driving piece abuts against a piston of the cartridge bottle, the main body is provided with a first internal thread section, and the first internal thread section is provided with a positioning protrusion; the fixing cylinder is provided with a first external thread section matched with the first internal thread section, the first external thread section is provided with a positioning groove, the first external thread section is in threaded connection with the first internal thread section, and the positioning protrusion is inserted into the positioning groove along with screwing-in of the first external thread section. During use, the fixing barrel is not prone to loosening, when the cartridge bottle needs to be replaced, the positioning protrusion only needs to be pulled out of the positioning groove, then the first external thread section is screwed out of the first internal thread section in the opposite direction, the fixing barrel and the main body can be separated, the structure is simple, and disassembly and assembly are convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, relate to a kind of electronic injection pen. BACKGROUND

[0002] Electronic injection pen is a kind of modern medical equipment, for helping patient to inject medicine, especially suitable for the patient who needs to inject medicine frequently, such as diabetic patient. The existing electronic injection pen needs to use special tools to disassemble and assemble the electronic injection pen when replacing the cartridge, which is complex and cumbersome, and has certain limitations in use. SUMMARY

[0003] The utility model provides a kind of electronic injection pen, to solve the problem of the electronic injection pen of prior art complex and cumbersome, difficult to assemble and disassemble.

[0004] The utility model provides a kind of electronic injection pen, it include: main part, cartridge, fixed cylinder and injection assembly;The injection assembly includes needle, the needle is inserted in the cartridge, the fixed cylinder is fixedly sleeved in the outside of the cartridge, at least part of the fixed cylinder is inserted in the main part, driving piece is installed in the main part, the driving shaft of the driving piece and the piston of the cartridge abut,

[0005] Among them, the main part has first internal thread section, the first internal thread section is equipped with positioning protrusion, the fixed cylinder has the first external thread section matched with the first internal thread section, the first external thread section is equipped with positioning slot, the first external thread section and the first internal thread section are threadedly connected, with the first external thread section is screwed in, the positioning protrusion is inserted in the positioning slot.

[0006] According to the utility model provides a kind of electronic injection pen, it further include protective sleeve, another part of the fixed cylinder is located in the protective sleeve, the first limit table is protruded to the end of the main part close to the fixed cylinder, the first limit table and the end surface of the main part form first abutment surface,

[0007] The first limit table has second external thread section, the second external thread section is equipped with limit slot, the protective sleeve has the second internal thread section matched with the second external thread section, the second internal thread section is equipped with limit protrusion, the second external thread section and the second internal thread section are threadedly connected, with the second internal thread section is screwed in, the limit protrusion is inserted in the limit slot, the end surface of the protective sleeve and the first abutment surface abut.

[0008] According to an electronic injection pen provided by the present invention, it also includes a clamp, and a second limit platform is protruding from the end face of the first limit platform, and the second limit platform and the end face of the first limit platform form a second abutment surface; the clamp is located in the protective sleeve, the fixing tube is passed through the clamp, and the clamp is sleeved on the second limit platform, and the end face of the clamp abuts against the second abutment surface.

[0009] According to an electronic injection pen provided by the utility model, the second limit platform has a third external thread segment, the third external thread segment is provided with a locking groove, the clamp has a third internal thread segment adapted to the third external thread segment, the third internal thread segment is provided with a locking block, the third external thread segment and the third internal thread segment are threadedly connected, and as the third internal thread segment is screwed in, the locking block is inserted into the locking groove.

[0010] According to the electronic injection pen provided by the present invention, it also includes a protective cap, which is detachably covered on the end of the protective sleeve away from the main body. When the protective cap is covered on the protective sleeve, the hidden needle is accommodated in the accommodating cavity of the protective cap.

[0011] According to an electronic injection pen provided by the present utility model, it also includes a positioning cylinder, which is fixedly installed in the main body. The fixed cylinder, the positioning cylinder and the driving shaft of the driving member are coaxially arranged. One end of the fixed cylinder located in the main body is fixedly inserted into one end of the positioning cylinder, and the driving shaft of the driving member can be slidably inserted into the other end of the positioning cylinder.

[0012] According to an electronic injection pen provided by the present invention, a processor and a power supply are fixedly installed in the main body, a plurality of function keys are provided on the main body, the plurality of function keys are electrically connected to the processor respectively, the processor is electrically connected to the drive component, and the power supply is electrically connected to the processor and the drive component respectively.

[0013] According to the electronic injection pen provided by the present invention, the injection assembly further comprises a seat body, the seat body is fixedly sleeved on the outside of the hidden needle, and the seat body and the fixed cylinder are threadedly connected.

[0014] According to the electronic injection pen provided by the present invention, a plurality of notches are provided at one end of the fixed barrel located in the main body, and a tongue is formed between two adjacent notches. The tongue is used to guide the cartridge to slide and be inserted into the fixed barrel.

[0015] According to the electronic injection pen provided by the present invention, a pressing piece is installed on the inner wall of the fixed barrel. The end of the fixed barrel close to the injection assembly is tapered. The pressing piece is used to press the cartridge bottle against the small-diameter end of the fixed barrel.

[0016] The utility model provides an electronic injection pen, wherein a hidden needle is inserted into a cartridge bottle, a fixing barrel is fixedly sleeved on the outside of the cartridge bottle, at least a portion of the fixing barrel is inserted into a main body, a driving member is installed in the main body, a driving shaft of the driving member abuts against a piston of the cartridge bottle, and the driving member squeezes the piston to inject the liquid in the cartridge bottle from the hidden needle into the human body, wherein the first external thread section and the first internal thread section are threadedly connected, and as the first external thread section is screwed in, a positioning protrusion is inserted into a positioning groove, thereby achieving a secure locking of the fixing barrel on the main body, and the fixing barrel is not easy to loosen when the user uses the electronic injection pen, and when the cartridge bottle needs to be replaced, it is only necessary to pull the positioning protrusion out of the positioning groove, and then screw the first external thread section out of the first internal thread section in the opposite direction to achieve separation of the fixing barrel and the main body, without the aid of other auxiliary tools, with a simple structure and convenient disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the electronic injection pen provided by the utility model.

[0019] Figure 2 This is one of the structural explosion diagrams of the electronic injection pen provided by the utility model.

[0020] Figure 3 This is the second structural explosion diagram of the electronic injection pen provided by the utility model.

[0021] Figure 4 It is a structural explosion diagram of the main body provided by the utility model.

[0022] Figure 5 It is a partial structural diagram of the electronic injection pen provided by the utility model.

[0023] Reference numerals:

[0024] 1. Main body; 2. Cartridge; 3. Fixed cylinder; 4. Injection assembly; 5. Protective sleeve; 6. Clamp; 7. Protective cap; 8. Positioning cylinder; 11. Driving member; 12. First internal thread segment; 121. Positioning protrusion; 13. First limiting platform; 131. Second external thread segment; 1311. Limiting groove; 14. Processor; 15. Power supply; 16. Multi-function key; 17. Top cover; 18. Bottom cover; 19. Second limiting platform; 21. Piston; 31. First external thread segment; 311. Positioning groove; 32. Tongue; 33. Fastening member; 41. Hidden needle; 42. Base; 191. Third external thread segment; 1911. Locking groove. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly refer to one or more of these features. In the description of this utility model, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected items, and the character " / " generally indicates an "or" relationship between the connected items.

[0027] 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", "axial", "radial", "circumferential" and the like to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0028] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0029] The utility model provides a kind of electronic injection pen, including: main body 1, cassette bottle 2, fixed cylinder 3 and injection assembly 4. Figure 1-Figure 5 , by specific embodiment and its application scene, a kind of electronic injection pen provided by the utility model embodiment is described in detail.

[0030] As Figure 1 , Figure 2 and Figure 3 The utility model provides a kind of electronic injection pen, including: main body 1, cassette bottle 2, fixed cylinder 3 and injection assembly 4.

[0031] Wherein, main body 1 has first internal thread section 12, and first internal thread section 12 is equipped with positioning protrusion 121. As Figure 2 and Figure 3 Fixed cylinder 3 has the first outer thread section 31 matched with first internal thread section 12.

[0032] It can be understood that cassette bottle 2 is used to hold liquid medicine. Cassette bottle 2 is detachably fixed in the inside of fixed cylinder 3. One end of fixed cylinder 3 is inserted into main body 1. Injection assembly 4 is detachably fixed to the end of fixed cylinder 3 away from main body 1, to ensure that the needle 41 can be stably inserted in cassette bottle 2. The drive shaft of drive member 11 and the piston 21 of cassette bottle 2 abut. Drive member 11 is used to drive piston 21 to move in the direction close to injection assembly 4, so that the liquid medicine in cassette bottle 2 is injected from needle 41, so as to complete the automatic injection of electronic injection pen.

[0033] Specifically, as Figure 4 The utility model discloses a kind of electronic injection pen, including: main body 1, cassette bottle 2, fixed cylinder 3 and injection assembly 4. Drive member 11 is located in the cavity, and the drive shaft of drive member 11 and the axial direction of fixed cylinder 3 are parallel. Optionally, drive member 11 can be injection pump.

[0034] like Figure 4 As shown, the top cover 17 and the bottom cover 18 form a through hole at one end close to the fixed cylinder 3. The hole wall of the through hole is provided with a first internal thread section 12. Figure 3 As shown, the outer wall of the fixing barrel 3 has a first externally threaded section 31. The first internally threaded section 12 is adapted to fit within the first externally threaded section 31. The end of the fixing barrel 3 closest to the main body 1 is located within the cavity, and the first externally threaded section 31 is threadedly connected to the first internally threaded section 12, thereby achieving a fixed connection between the fixing barrel 3 and the main body 1.

[0035] Furthermore, if Figure 5 As shown, the first internal thread section 12 is provided with a positioning protrusion 121. Correspondingly, as Figure 3 As shown, the first externally threaded section 31 is provided with a positioning groove 311. The positioning groove 311 is located at the end of the first externally threaded section 31 that is closer to the main body 1. The positioning protrusion 121 is located at the end of the first internally threaded section 12 that is farther from the fixing barrel 3. As the first externally threaded section 31 is screwed in, the positioning protrusion 121 is inserted into the positioning groove 311, thereby firmly locking the fixing barrel 3 to the main body 1.

[0036] When the cartridge bottle 2 needs to be replaced, it is only necessary to twist the fixing cylinder 3 in the opposite direction to disengage the positioning protrusion 121 from the positioning groove 311, and then loosen the first external thread section 31 to separate the fixing cylinder 3 and the main body 1 without the help of auxiliary tools, which is very convenient.

[0037] The utility model provides an electronic injection pen, wherein a hidden needle 41 is inserted into the cartridge 2, a fixing barrel 3 is fixedly sleeved on the outside of the cartridge 2, and at least a portion of the fixing barrel 3 is inserted into the main body 1. A driving member 11 is installed in the main body 1, and a driving shaft of the driving member 11 abuts against the piston 21 of the cartridge 2, so that the driving member 11 squeezes the piston 21, so that the liquid in the cartridge 2 is injected into the human body through the hidden needle 41. The first external thread section 31 is threadedly connected to the first internal thread section 12. As the first external thread section 31 is screwed in, the positioning protrusion 121 is inserted into the positioning groove 311, thereby firmly locking the fixing barrel 3 on the main body 1. When the user uses the electronic injection pen, the fixing barrel 3 is not easy to loosen. When the cartridge 2 needs to be replaced, the user only needs to pull the positioning protrusion 121 out of the positioning groove 311, and then screw the first external thread section 31 out of the first internal thread section 12 in the opposite direction to achieve separation of the fixing barrel 3 and the main body 1. No other auxiliary tools are required, the structure is simple, and disassembly and assembly are convenient.

[0038] In some embodiments, as Figure 1 As shown, the electronic injection pen further includes a protective sleeve 5. Another portion of the fixed barrel 3 is located within the protective sleeve 5. A first stopper 13 is protruded from one end of the main body 1 near the fixed barrel 3. The first stopper 13 and the end surface of the main body 1 form a first abutting surface.

[0039] The first limiting platform 13 has a second externally threaded section 131. The second externally threaded section 131 is provided with a limiting groove 1311. The protective sleeve 5 has a second internally threaded section that matches the second externally threaded section 131. The second internally threaded section is provided with a limiting protrusion. The second externally threaded section 131 is threadedly connected to the second internally threaded section. As the second internally threaded section is screwed in, the limiting protrusion is inserted into the limiting groove 1311, and the end face of the protective sleeve 5 abuts the first abutting surface.

[0040] As will be understood, a first stopper 13 is protruded from one end of the main body 1, near the fixed barrel 3. The protective sleeve 5 is mounted over the fixed barrel 3. A second internally threaded section is located at the open end of the protective sleeve 5. The second internally threaded section and the second externally threaded section 131 are threadedly connected, with the stopper protrusion inserted into the stopper groove 1311. Simultaneously, the end surface of the protective sleeve 5 abuts the first abutting surface, thereby securely securing the protective sleeve 5 to the main body 1. The protective sleeve 5 protects the cartridge 2 and maintains the aesthetics of the entire electronic injection pen.

[0041] When the cartridge bottle 2 needs to be replaced, it is only necessary to pull the limiting protrusion out of the limiting groove 1311, and then unscrew the second internal thread section from the second external thread section 131 in the opposite direction to separate the protective cover 5 and the main body 1, which is very convenient.

[0042] like Figure 2 As shown, the electronic injection pen also includes a clamp 6. A second clamp 19 is protruding from the end surface of the first clamp 13. The second clamp 19 and the end surface of the first clamp 13 form a second abutment surface. The clamp 6 is located within the protective sleeve 5, and the fixing tube 3 is inserted into the clamp 6. The clamp 6 is sleeved on the second clamp 19, and the end surface of the clamp 6 abuts the second abutment surface.

[0043] It is understood that the clamp 6 is fixed to one end of the main body 1 near the fixed tube 3 to ensure the stability of the connection between the top cover 17 and the bottom cover 18, while ensuring that the fixed tube 3 can be firmly inserted into the main body 1. Specifically, the second limit platform 19 is protruded from the first limit platform 13. The clamp 6 is fixedly sleeved on the second limit platform 19, so that the end face of the clamp 6 abuts against the second abutting surface. The fixed tube 3 is inserted into the clamp 6 and is firmly fixed to the main body 1 through the threaded cooperation of the first external thread section 31 and the first internal thread section 12, as well as the limiting cooperation of the positioning protrusion 121 and the positioning groove 311.

[0044] Specifically, in some embodiments, Figure 5 As shown, the second limiting platform 19 has a third externally threaded section 191 with a locking groove 1911. The clamp 6 has a third internally threaded section that matches the third externally threaded section 191 and is provided with a locking block. The third externally threaded section 191 and the third internally threaded section are threadedly connected. As the third internally threaded section is screwed in, the locking block is inserted into the locking groove 1911.

[0045] By setting a third external thread segment 191 on the outer wall of the second limit platform 19 and setting a locking block on the third external thread segment 191, the third internal thread segment and the third external thread segment 191 are threadedly connected, and the locking block is inserted into the locking groove 1911, thereby further firmly fixing the clamp 6 on the second limit platform 19.

[0046] Furthermore, if Figure 1 and Figure 2 As shown, the electronic injection pen also includes a protective cap 7. The protective cap 7 is detachably mounted on the end of the protective sleeve 5 away from the main body 1. When the protective cap 7 is mounted on the protective sleeve 5, the hidden needle 41 is accommodated in the accommodating cavity of the protective cap 7, providing physical protection for the hidden needle 41.

[0047] In one embodiment, one of the protective sleeve 5 and the protective cap 7 is provided with a slot, and the other is provided with a clamping head. When the protective cap 7 is mounted on the end of the protective sleeve 5 away from the main body 1, the clamping head is clamped into the slot, thereby achieving a detachable connection between the protective cap 7 and the protective sleeve 5.

[0048] In some embodiments, as Figure 4 As shown, the electronic injection pen also includes a positioning cylinder 8. The positioning cylinder 8 is fixedly mounted within the main body 1. The fixed cylinder 3, the positioning cylinder 8, and the drive shaft of the driver 11 are coaxially arranged. One end of the fixed cylinder 3 located within the main body 1 is fixedly inserted into one end of the positioning cylinder 8, while the drive shaft of the driver 11 is slidably inserted into the other end of the positioning cylinder 8.

[0049] By sliding the driving shaft of the driving member 11 into one end of the positioning cylinder 8 and fixing one end of the fixing cylinder 3 into the other end of the positioning cylinder 8, it is possible to effectively ensure that the driving shaft of the driving member 11 moves along the axial direction of the cartridge bottle 2, thereby ensuring the stability of the electronic injection pen during injection.

[0050] A processor 14 and a power supply 15 are fixedly mounted in the main body 1. The main body 1 is provided with a plurality of function keys, each of which is electrically connected to the processor 14. The processor 14 is electrically connected to the driver 11. The power supply 15 is electrically connected to the processor 14 and the driver 11.

[0051] It will be appreciated that the multi-function button 16 is located on the top cover 17. The multi-function button 16 can function as an injection button, a dosage increase button, a dosage decrease button, or a return button, among others. Each multi-function button 16 is electrically connected to the processor 14, which in turn is electrically connected to the driver 11. By triggering a multi-function button 16, the user can control the processor 14 to perform a corresponding functional response. For example, when the user triggers the injection button, the processor 14 immediately activates the driver 11. The driver 11's drive shaft drives the piston 21, causing the drug solution to be injected into the patient through the hidden needle 41.

[0052] The injection assembly 4 also includes a base 42. The base 42 is fixedly mounted on the exterior of the hidden needle 41 and is threadedly connected to the fixed barrel 3. Specifically, one of the base 42 and the fixed barrel 3 has internal threads, while the other has external threads. This threaded connection between the internal and external threads allows for a detachable connection between the base 42 and the fixed barrel 3, making it easier for the user to replace the injection assembly 4.

[0053] One end of the fixing barrel 3, located within the main body 1, is provided with a plurality of notches. Between adjacent notches, tabs 32 are formed to guide the cartridge 2 as it slides into the fixing barrel 3. When the user inserts the cartridge 2 into the fixing barrel 3, the tabs 32 ensure that the cartridge 2 slides securely into the fixing barrel 3 and is inserted into the correct position.

[0054] like Figure 3 As shown, a pressing member 33 is installed on the inner wall of the fixed barrel 3. The end of the fixed barrel 3 close to the injection assembly 4 is tapered, and the pressing member 33 is used to press the cartridge bottle 2 against the small diameter end of the fixed barrel 3.

[0055] The retaining member 33 is located at the end of the fixed barrel 3 away from the injection assembly 4. Optionally, the retaining member 33 is a buckle. The end of the fixed barrel 3 near the injection assembly 4 gradually narrows. This tapered design helps ensure that the cartridge 2 is securely mounted on the smaller diameter end of the fixed barrel 3. The retaining member 33 effectively secures and maintains the position of the cartridge 2. The user can easily insert the cartridge 2 into the fixed barrel 3 and use the retaining member 33 to hold the cartridge 2 against the end of the fixed barrel 3 near the injection assembly 4.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An electronic injection pen, characterized in that: include: The main body, the cartridge, the fixed barrel and the injection assembly; the injection assembly includes a hidden needle, the hidden needle is inserted into the cartridge, the fixed barrel is fixedly sleeved on the outside of the cartridge, at least part of the fixed barrel is inserted into the main body, a driving member is installed in the main body, and the driving shaft of the driving member abuts against the piston of the cartridge. In which, the main body has a first internal thread segment, the first internal thread segment is provided with a positioning protrusion, the fixing cylinder has a first external thread segment adapted to the first internal thread segment, the first external thread segment is provided with a positioning groove, the first external thread segment and the first internal thread segment are threadedly connected, and as the first external thread segment is screwed in, the positioning protrusion is inserted into the positioning groove.

2. The electronic injection pen according to claim 1, characterized in that: It also includes a protective sleeve, the other part of the fixed tube is located in the protective sleeve, and the end of the main body close to the fixed tube is provided with a first limit platform, and the first limit platform and the end surface of the main body form a first abutment surface. The first limiting platform has a second external thread segment, the second external thread segment is provided with a limiting groove, the protective sleeve has a second internal thread segment adapted to the second external thread segment, the second internal thread segment is provided with a limiting protrusion, the second external thread segment and the second internal thread segment are threadedly connected, as the second internal thread segment is screwed in, the limiting protrusion is inserted into the limiting groove, and the end face of the protective sleeve abuts against the first abutting surface.

3. The electronic injection pen according to claim 2, characterized in that: It also includes a clamp, and a second limit platform is protruding from the end face of the first limit platform, and the second limit platform and the end face of the first limit platform form a second abutment surface; the clamp is located in the protective sleeve, the fixing tube is passed through the clamp, and the clamp is sleeved on the second limit platform, and the end face of the clamp abuts against the second abutment surface.

4. The electronic injection pen according to claim 3, characterized in that: The second limit platform has a third external thread segment, the third external thread segment is provided with a locking groove, the clamp has a third internal thread segment adapted to the third external thread segment, the third internal thread segment is provided with a locking block, the third external thread segment and the third internal thread segment are threadedly connected, and as the third internal thread segment is screwed in, the locking block is inserted into the locking groove.

5. The electronic injection pen according to claim 2, characterized in that: It also includes a protective cap, which is detachably covered on an end of the protective sleeve away from the main body. When the protective cap is covered on the protective sleeve, the hidden needle is accommodated in the accommodating cavity of the protective cap.

6. The electronic injection pen according to claim 1, characterized in that: It also includes a positioning cylinder, which is fixedly installed in the main body. The fixed cylinder, the positioning cylinder and the driving shaft of the driving member are coaxially arranged. One end of the fixed cylinder located in the main body is fixedly inserted into one end of the positioning cylinder, and the driving shaft of the driving member can be slidably inserted into the other end of the positioning cylinder.

7. The electronic injection pen according to claim 1, characterized in that: A processor and a power supply are fixedly installed in the main body. A plurality of function keys are provided on the main body. The plurality of function keys are electrically connected to the processor respectively. The processor is electrically connected to the drive component. The power supply is electrically connected to the processor and the drive component respectively.

8. The electronic injection pen according to claim 1, characterized in that: The injection assembly also includes a seat body, which is fixedly sleeved on the outside of the hidden needle, and the seat body and the fixed cylinder are threadedly connected.

9. The electronic injection pen according to claim 1, characterized in that: One end of the fixing cylinder located in the main body is provided with a plurality of notches, and a tongue is formed between two adjacent notches. The tongue is used to guide the cartridge bottle to be slidably inserted into the fixing cylinder.

10. The electronic injection pen according to claim 1, characterized in that: A pressing piece is installed on the inner wall of the fixed barrel. The end of the fixed barrel close to the injection assembly is tapered. The pressing piece is used to press the cartridge bottle against the small-diameter end of the fixed barrel.

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