Subcutaneous insulin automatic injection device for endocrinology department

Abstract

The invention relates to an automatic subcutaneous insulin injection device for the endocrinology department. The automatic subcutaneous insulin injection device comprises a rack, an arm fixing module, an automatic injection module, a driving module and a main control module. The arm fixing module is provided with an adjustable supporting seat and a fixing belt and is used for being matched with arms of different patients. The automatic injection module adopts a pneumatic design, and a negative pressure hole in a needle can adsorb skin to form wrinkles, so that intramuscular injection is avoided; the first pneumatic telescopic piece drives the needle cylinder to pierce subcutaneously, and the second pneumatic telescopic piece pushes the piston to complete injection. The driving module controls overall lifting, and the main control module coordinates all actions. The device realizes automation and standardization of arm insulin injection, is safe and efficient to operate, and is suitable for a clinical environment.

Description

Technical Field

[0001] This invention relates to the field of insulin injection, and in particular to an automated subcutaneous insulin injection device for endocrinology. Background Technology

[0002] Insulin injection is a core part of daily treatment for diabetic patients. Traditionally, injections are administered subcutaneously using insulin pens or regular syringes, either by the patient themselves or by healthcare professionals in areas rich in subcutaneous fat, such as the abdomen or thighs. However, in certain clinical scenarios, such as when the patient requires assistance or when long-term injections lead to abdominal fat accumulation, the arm becomes an important alternative injection site.

[0003] Currently, the main technical challenges and shortcomings in clinical practice when injecting insulin into the arm are as follows:

[0004] 1. High risks associated with intramuscular injections: Compared to the abdomen and thighs, the subcutaneous fat layer in the arms (especially the deltoid region) is thinner, and its thickness varies from person to person. When using a regular syringe or insulin pen for injection, there is a high risk of inserting the needle too deeply or accidentally injecting it into muscle tissue. Injecting insulin into muscles can lead to excessively rapid absorption, potentially causing drastic fluctuations in blood sugar and severe hypoglycemia, posing significant safety risks.

[0005] 2. Difficulty in Standardizing Skin-Pinching Techniques: To avoid intramuscular injections, current guidelines require pinching the skin during arm injections to increase subcutaneous fat thickness. However, the skin-pinching technique relies entirely on the experience and skill of healthcare professionals, with individual differences in pressure, height, and stability. Pinching too tightly may result in injection into the muscle layer, while pinching too loosely will be ineffective. This uncontrollability directly affects the safety and consistency of injection efficacy.

[0006] 3. Inefficiency and Poor Experience: In a hospital environment, medical staff need to frequently administer injections to multiple patients. Traditional manual injection methods are cumbersome (positioning, disinfection, pinching the skin, inserting the needle, injecting, and withdrawing the needle), resulting in low efficiency. Furthermore, for patients requiring assistance with injections, pinching the skin and administering the injection on the arm is quite inconvenient, and patients are prone to experiencing tension and fear from witnessing the needle piercing the skin.

[0007] Therefore, there is an urgent need in the field for an integrated device specifically designed for clinical settings that can automatically and safely deliver insulin injections to a patient's arm. Summary of the Invention

[0008] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide an automated subcutaneous insulin injection device for endocrinology.

[0009] The technical solution of the present invention is as follows: an automatic subcutaneous insulin injection device for endocrinology, characterized in that it comprises:

[0010] frame;

[0011] An arm fixing module includes a support base, fasteners, and fixing components. The support base can slide and rotate horizontally relative to the frame. The support base is used to support the arm. The support base is provided with the fasteners and fixing components. The fasteners are used to fix the support base. The fixing components are used to fix the arm to the support base.

[0012] An automatic injection module includes a needle and a syringe. The needle includes a protective tube, a syringe barrel, a piston rod, and a needle tip. The bottom of the protective tube has several negative pressure holes. The syringe barrel passes through the protective tube and can move axially along the protective tube. The needle tip is located at the bottom of the syringe barrel. A piston rod with a piston is located inside the syringe barrel and can move axially along the syringe barrel. The syringe includes a housing and a first pneumatic telescopic component, a second pneumatic telescopic component, and a pneumatic structure disposed on the housing. The needle is detachably installed below the housing. The pneumatic structure is connected to the negative pressure holes to generate negative pressure. The first pneumatic telescopic component is connected to the syringe barrel to drive the syringe barrel to move. The second pneumatic telescopic component is connected to the piston rod to drive the piston rod to move. The first and second pneumatic telescopic components are respectively connected to the pneumatic structure.

[0013] A drive module is mounted on the frame and connected to the automatic injection module to drive the automatic injection module to move up and down.

[0014] The main control module is connected to the automatic injection module and the drive module.

[0015] Furthermore, the frame is provided with a support plate, the support plate is provided with a strip hole, the fasteners include a bolt and a hand-tightening nut, the bottom of the support base is fixedly provided with the bolt, the bolt passes downward through the strip hole and is threadedly connected to the hand-tightening nut.

[0016] Furthermore, the fastener is a fastening strap with Velcro, and there are multiple fastening straps arranged at intervals along the length of the support base.

[0017] Furthermore, the drive module includes a motor, a lead screw, and a slider. The lead screw is rotatably mounted on the frame, and the motor is connected to the lead screw to drive the lead screw to rotate. The slider has a screw hole and is threadedly connected to the lead screw through the screw hole. The slider is fixedly connected to the housing.

[0018] Furthermore, the negative pressure hole extends along the length of the protective tube and penetrates the protective tube. The upper end of the outer peripheral wall of the protective tube is provided with an external thread, and the bottom of the shell is provided with an upwardly recessed groove. The inner peripheral wall of the groove is provided with an internal thread, and the top wall of the groove is provided with a plurality of air extraction holes. All the air extraction holes are connected to the air pressure structure. When the external thread and the internal thread are tightened together, the plurality of air extraction holes correspond one-to-one with the plurality of negative pressure holes.

[0019] Furthermore, the inner wall of the housing is provided with an annular venting groove, which is connected to all the air extraction holes. The air pressure structure includes an air pump and an air extraction pipe, with the air pump connected to the air extraction pipe and the air extraction pipe connected to the venting groove.

[0020] Furthermore, the interior of the housing is hollow to form a receiving cavity, and a guide hole is provided at the center of the top wall of the groove. The guide hole extends upward and communicates with the receiving cavity. The first pneumatic telescopic component includes a cylinder and a guide tube. The cylinder is fixedly disposed in the receiving cavity and connected to the pneumatic structure. The guide tube passes through the guide hole. The cylinder is connected to the guide tube to drive the guide tube to move along the guide hole. The second pneumatic telescopic component is disposed inside the guide tube.

[0021] When the needle is detachably installed below the housing, the upper end of the syringe abuts against the lower end of the catheter, and the upper end of the piston rod extends into the catheter and connects to the second pneumatic telescopic component.

[0022] Furthermore, the second pneumatic telescopic component includes a bellows, a fixed plate, and a push plate. The fixed plate is fixedly disposed inside the guide tube, and the push plate is slidably disposed inside the guide tube. The push plate abuts against the upper end of the piston rod.

[0023] The upper end of the corrugated pipe is fixedly connected to the fixed plate, and the lower end is fixedly connected to the push plate. The fixed plate is provided with an inflation pipe and an exhaust pipe that are respectively connected to the corrugated pipe. The corrugated pipe can be extended when inflated. The inflation pipe and the exhaust pipe are respectively connected to the air pressure structure.

[0024] Furthermore, a retaining ring is provided at the bottom of the protective tube, and a spring is connected between the lower end of the syringe and the retaining ring.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: (The beneficial effects need to correspond to the solutions in the claims)

[0026] 1. Integration and Automation

[0027] This device integrates multiple steps, including arm fixation, negative pressure skin pinching, needle puncture, and drug injection, into one device to achieve automated injection. This can significantly reduce the number of steps required by medical personnel, reduce human error, and improve injection efficiency and consistency.

[0028] 2. Innovative negative pressure skin-pinching mechanism

[0029] The protective tube is connected to the air pressure structure through a negative pressure hole at the bottom, simulating the action of manually pinching the skin and automatically lifting the skin folds. This effectively avoids the risk of intramuscular injection caused by the thin subcutaneous fat in the arm. Moreover, negative pressure adsorption is gentler than mechanical clamping, reducing patient discomfort.

[0030] 3. Compact pneumatic actuator system

[0031] The device employs a unified pneumatic structure to drive three core actions: negative pressure adsorption, syringe propulsion (first telescopic component), and drug injection (second telescopic component). This achieves a high degree of integration, simplifies the drive system, and makes it entirely pneumatic, avoiding complex motor and gear transmissions. This reduces the complexity and size of the device, and the pneumatic method makes it easy to achieve smooth and precise linear motion, making it suitable for delicate injection operations.

[0032] 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

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and the drawings are only examples and not strictly drawn to scale. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0034] Figure 1 This is a schematic diagram of the left side of the present invention;

[0035] Figure 2 This is a schematic diagram on the right side of the present invention;

[0036] Figure 3 This is a lower schematic diagram of the present invention;

[0037] Figure 4 This is a schematic diagram of the automatic injection module of the present invention;

[0038] Figure 5 This is an exploded view of the automatic injection module of the present invention;

[0039] Figure 6 This is an exploded view of the automatic injection module of the present invention;

[0040] Figure 7 This is a cross-sectional view of the automatic injection module of the present invention;

[0041] Figure 8 This is a cross-sectional view of the syringe of the present invention;

[0042] Figure 9 This is a cross-sectional view of the needle of the present invention.

[0043] Figure label:

[0044] 1. Frame; 11. Support plate; 12. Strip hole;

[0045] 2. Arm fixing module; 21. Support base; 22. Fastener; 23. Fixture;

[0046] 3. Automatic injection module;

[0047] 31. Needle; 311. Protective tube; 312. Syringe; 313. Piston rod; 314. Needle tip; 315. Spring; 316. Negative pressure port; 317. Retaining ring;

[0048] 32. Syringe; 321. Shell; 322. Groove; 323. Suction port; 324. Vent groove; 325. Air pump; 326. Suction tube; 327. Receiving cavity; 328. Cylinder; 329. Guide tube; 3210. Bellows; 3211. Fixing plate; 3212. Push plate; 3213. Inflation tube; 3214. Exhaust tube;

[0049] 4. Drive module; 41. Motor; 42. Lead screw; 43. Slider;

[0050] 5. Main control module. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown 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. In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "vertical," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In the description of this invention, "first feature" and "second feature" may include one or more of the indicated features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of the indicated features.

[0055] Please refer to the attached diagram below. Figures 1-9 An automatic subcutaneous insulin injection device for endocrinology is described according to an embodiment of the present invention. The device includes: a frame 1, an arm fixation module 2, an automatic injection module 3, a drive module 4, and a main control module 5.

[0056] like Figures 1-3 As shown, the arm fixing module 2 includes a support base 21, a fastener 22 and a fixing member 23. The support base 21 can slide and rotate horizontally relative to the frame 1. The support base 21 is used to support the arm. The support base 21 is provided with a fastener 22 and a fixing member 23. The fastener 22 is used to fix the support base 21, and the fixing member 23 is used to fix the arm on the support base 21.

[0057] like Figures 4-9 As shown, the automatic injection module 3 includes a needle 31 and a syringe 32. The needle 31 includes a protective tube 311, a syringe barrel 312, a piston rod 313, and a needle tip 314. The bottom of the protective tube 311 is provided with several negative pressure holes 316. The syringe barrel 312 passes through the protective tube 311 and can move axially along the protective tube 311. The bottom of the syringe barrel 312 is provided with a needle tip 314. The syringe barrel 312 is provided with a piston rod 313 with a piston, which can move axially along the syringe barrel 312. The syringe 32 includes... The housing 321 includes a first pneumatic telescopic member, a second pneumatic telescopic member, and a pneumatic structure disposed on the housing 321. The needle 31 is detachably installed below the housing 321. The pneumatic structure is connected to a negative pressure hole 316 to generate negative pressure in the negative pressure hole 316. The first pneumatic telescopic member is connected to a syringe 312 to drive the syringe 312 to move. The second pneumatic telescopic member is connected to a piston rod 313 to drive the piston rod 313 to move. The first and second pneumatic telescopic members are respectively connected to the pneumatic structure.

[0058] The drive module 4 is mounted on the frame 1 and is connected to the automatic injection module 3 to drive the automatic injection module 3 to move up and down; the automatic injection module 3 and the drive module 4 are respectively connected to the main control module 5.

[0059] Specifically, this device is mainly used for insulin injection in the arm. During use, the patient sits in a chair and places their arm on the support base 21. Medical personnel then use the fixation device 23 to secure the patient's arm to the support base 21. During this process, medical personnel can quickly and flexibly adjust the arm position according to the patient's posture and injection site to ensure optimal injection angle and patient comfort.

[0060] Because the subcutaneous tissue in the arm is thin, insulin can easily be injected into the muscle layer. Therefore, to avoid this situation and ensure that the needle 314 can accurately enter the subcutaneous fat layer (rather than the muscle), this device is also equipped with a related negative pressure structure to achieve the skin pinching operation.

[0061] like Figures 4-7 As shown, the automatic injection module 3 includes a needle 31 and a syringe 32. The needle 31 is a disposable injection needle containing insulin. The needle 31 has a protective tube 311 with a negative pressure hole 316. When the needle 31 is installed on the syringe 32, the negative pressure hole 316 is connected to the air pressure structure of the syringe 32. When the air pressure structure is pumped out, it will generate negative pressure in the negative pressure hole 316.

[0062] Therefore, during injection, the drive module 4 first drives the automatic injection module 3 to move to the arm, so that the negative pressure hole 316 of the protective tube 311 sucks on the skin of the arm. Then, the drive module 4 drives the automatic injection module 3 to rise a certain distance. At this time, the skin of the arm that is sucked on will be lifted to form wrinkles, thereby realizing the skin pinching operation. Then, the first pneumatic telescopic component drives the syringe 312 to move, so that the needle 314 pierces the subcutaneous fat layer. The second pneumatic telescopic component then drives the piston rod 313 to move, completing the insulin injection.

[0063] After the injection is completed, the first and second pneumatic telescopic components are reset, and then the drive module 4 drives the automatic injection module 3 to reset upward. Medical personnel then replace the needle 31 with a new one for the next injection.

[0064] In some implementations, such as Figure 2 and Figure 3 As shown, a support plate 11 is provided on the frame 1, and a strip hole 12 is provided on the support plate 11. Fasteners 22 include bolts and hand-tightening nuts. A bolt is fixed to the bottom of the support base 21, and the bolt passes downward through the strip hole 12 and is threadedly connected to the hand-tightening nut. After loosening the hand-tightening nut, the support plate 11 can be rotated and moved, which is very convenient to use.

[0065] The fastener 23 used is a fastening strap with Velcro. There are multiple fastening straps arranged at intervals along the length of the support 21. This fastening method is simple and easy to implement.

[0066] In some implementations, such as Figures 1-3 As shown, the drive module 4 includes a motor 41, a lead screw 42, and a slider 43. The lead screw 42 is rotatably mounted on the frame 1. The motor 41 is connected to the lead screw 42 to drive the lead screw 42 to rotate. The slider 43 has a screw hole and is threadedly connected to the lead screw 42 through the screw hole. The slider 43 is fixedly connected to the housing 321, thereby realizing the up and down movement of the automatic injection module 3. This lead screw 42 drive form is simple, and the movement is smooth and the positioning accuracy is high, which is suitable for precision operation.

[0067] In some implementations, such as Figures 4-9 As shown, the negative pressure hole 316 extends along the length of the protective tube 311 and penetrates the protective tube 311. The upper end of the outer peripheral wall of the protective tube 311 is provided with an external thread. The bottom of the housing 321 is provided with an upwardly recessed groove 322. The inner peripheral wall of the groove 322 is provided with an internal thread. The top wall of the groove 322 is provided with several air extraction holes 323. All air extraction holes 323 are connected to the air pressure structure. When the external thread and the internal thread are tightened, the several air extraction holes 323 correspond one-to-one with the several negative pressure holes 316.

[0068] In other words, the needle 31 (including syringe 312, insulin, and protective tube 311) is a disposable detachable module that is quickly connected to the housing 321 via threads. Therefore, the core contact parts are disposable, which can prevent cross-infection. Since only the low-cost needle 31 needs to be replaced, the main equipment can be reused, and the cost of use is controllable. The detachable threaded connection is simple and can achieve quick replacement, improving the efficiency of continuous operation in the hospital.

[0069] Moreover, once installed, the negative pressure hole 316 on the protective tube 311 corresponds one-to-one with the air extraction hole 323 on the housing 321, which facilitates air extraction to achieve negative pressure in the negative pressure hole 316.

[0070] To simplify the gas path structure, such as Figure 8 As shown, the inner wall of the housing 321 is provided with an annular venting groove 324, which is connected to all the air extraction holes 323. The air pressure structure includes an air pump 325 and an air extraction pipe 326. The air pump 325 is connected to the air extraction pipe 326, and the air extraction pipe 326 is connected to the venting groove 324. In this way, with the help of the venting groove 324, the air extraction operation of all the air extraction holes 323 can be realized with only one air extraction pipe 326, which is simple and convenient.

[0071] In some implementations, such as Figure 7 and Figure 8As shown, the interior of the housing 321 is hollow, forming a receiving cavity 327. A guide hole is provided at the center of the top wall of the groove 322. The guide hole extends upward and communicates with the receiving cavity 327. The first pneumatic telescopic component includes a cylinder 328 and a guide tube 329. The cylinder 328 is fixedly installed in the receiving cavity 327 and connected to the pneumatic structure. The guide tube 329 passes through the guide hole. The cylinder 328 is connected to the guide tube 329 to drive the guide tube 329 to move along the guide hole. A second pneumatic telescopic component is provided in the guide tube. When the needle 31 is detachably installed below the housing 321, the upper end of the syringe 312 abuts against the lower end of the guide tube 329, and the upper end of the piston rod 313 extends into the guide tube 329 and is connected to the second pneumatic telescopic component.

[0072] The second pneumatic telescopic component includes a bellows 3210, a fixed plate 3211, and a push plate 3212. The fixed plate 3211 is fixedly installed inside the guide tube 329, and the push plate 3212 is slidably installed inside the guide tube 329. The push plate 3212 abuts against the upper end of the piston rod 313. The upper end of the bellows 3210 is fixedly connected to the fixed plate 3211, and the lower end is fixedly connected to the push plate 3212. The fixed plate 3211 is provided with an inflation pipe 3213 and an exhaust pipe 3214 that are respectively connected to the bellows 3210. The bellows 3210 can be extended when inflated. The inflation pipe 3213 and the exhaust pipe 3214 are respectively connected to the pneumatic structure.

[0073] In other words, the first pneumatic telescopic component is mainly in the form of a cylinder 328 extending and retracting. When the cylinder 328 extends, it can push the guide tube 329 to move, thereby pushing the syringe 312 to move. The second pneumatic telescopic component is mainly in the form of a bellows 3210 extending and retracting. When the bellows 3210 is inflated, it can extend, thereby pushing the push plate 3212 to move, thereby pushing the piston rod 313 to move. This bellows 3210 telescopic design is simple and compact, without a complex structure, and is easy to install in the small guide tube 329.

[0074] Furthermore, the extension and retraction of cylinder 328 and bellows 3210 are both pneumatic, allowing them to be uniformly connected to the pneumatic structure, simplifying the system. Full pneumatic operation also avoids the complex motor 41 and gear transmission, reducing the complexity and size of the device. The pneumatic method also facilitates smooth and precise linear motion, suitable for delicate injection operations. To enable independent operation of each pneumatic component, the pneumatic structure can be equipped with three air pumps 325, used respectively to achieve negative pressure at the negative pressure port 316, extension and retraction of cylinder 328, and extension and retraction of bellows 3210, which will not be elaborated further.

[0075] In some implementations, such as Figure 9As shown, a retaining ring 317 is provided at the bottom of the protective tube 311, and a spring 315 connects the lower end of the syringe 312 to the retaining ring 317. Under normal conditions, the needle 314 is hidden in the upper part of the retaining ring 317 due to the influence of the spring 315, and is not exposed. This physical structure ensures the safety of medical personnel and patients, meeting medical device safety standards. Furthermore, the retaining ring 317 also provides a certain degree of limitation on the syringe 312, preventing the first pneumatic telescopic component from pushing the syringe 312 excessively during injection, which could cause the needle 314 to penetrate too deeply into the subcutaneous tissue.

[0076] In summary, this device has the following main characteristics:

[0077] 1. Integration and Automation

[0078] This device integrates multiple steps, including arm fixation, negative pressure skin pinching, 314 needle puncture, and drug injection, into one device to achieve automated injection. This can significantly reduce the number of steps required by medical personnel, reduce human error, and improve injection efficiency and consistency.

[0079] 2. Innovative negative pressure skin-pinching mechanism

[0080] The protective tube 311 is connected to the air pressure structure through the negative pressure hole 316 at the bottom, which simulates the action of manually pinching the skin and automatically lifts the skin folds. This effectively avoids the risk of intramuscular injection caused by the thin subcutaneous fat in the arm. Moreover, the negative pressure adsorption is gentler than mechanical clamping and reduces patient discomfort.

[0081] 3. Compact pneumatic actuator system

[0082] The device employs a unified pneumatic structure to drive three core actions: negative pressure adsorption, syringe 312 propulsion (first telescopic component), and drug injection (second telescopic component). This achieves a high degree of integration, simplifies the drive system, and makes it entirely pneumatic, avoiding the complex motor 41 and gear transmission. This reduces the complexity and size of the device, and the pneumatic method makes it easy to achieve smooth and precise linear motion, making it suitable for delicate injection operations.

[0083] Although some embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations of these embodiments without departing from the principles and spirit of the present invention are within the scope of protection of the claims of the present invention.

Claims

1. An automated subcutaneous insulin injection device for endocrinology, characterized in that, include: frame; An arm fixing module includes a support base, fasteners, and fixing components. The support base can slide and rotate horizontally relative to the frame. The support base is used to support the arm. The support base is provided with the fasteners and fixing components. The fasteners are used to fix the support base. The fixing components are used to fix the arm to the support base. An automatic injection module includes a needle and a syringe. The needle includes a protective tube, a syringe barrel, a piston rod, and a needle tip. The bottom of the protective tube has several negative pressure holes. The syringe barrel passes through the protective tube and can move axially along the protective tube. The needle tip is located at the bottom of the syringe barrel. A piston rod with a piston is located inside the syringe barrel and can move axially along the syringe barrel. The syringe includes a housing and a first pneumatic telescopic component, a second pneumatic telescopic component, and a pneumatic structure disposed on the housing. The needle is detachably installed below the housing. The pneumatic structure is connected to the negative pressure holes to generate negative pressure. The first pneumatic telescopic component is connected to the syringe barrel to drive the syringe barrel to move. The second pneumatic telescopic component is connected to the piston rod to drive the piston rod to move. The first and second pneumatic telescopic components are respectively connected to the pneumatic structure. A drive module is mounted on the frame and connected to the automatic injection module to drive the automatic injection module to move up and down. The main control module is connected to the automatic injection module and the drive module.

2. The automatic subcutaneous insulin injection device for endocrinology according to claim 1, characterized in that, The frame is provided with a support plate, the support plate has a strip hole, the fasteners include a bolt and a hand-tightening nut, the bottom of the support base is fixed with the bolt, the bolt passes downward through the strip hole and is threadedly connected to the hand-tightening nut.

3. The automatic subcutaneous insulin injection device for endocrinology according to claim 1, characterized in that, The fastener is a fastening strap with Velcro, and there are multiple fastening straps arranged at intervals along the length of the support base.

4. The automatic subcutaneous insulin injection device for endocrinology according to claim 1, characterized in that, The drive module includes a motor, a lead screw, and a slider. The lead screw is rotatably mounted on the frame. The motor is connected to the lead screw to drive the lead screw to rotate. The slider has a screw hole and is threadedly connected to the lead screw through the screw hole. The slider is fixedly connected to the housing.

5. The automatic subcutaneous insulin injection device for endocrinology according to claim 1, characterized in that, The negative pressure hole extends along the length of the protective tube and penetrates the protective tube. The upper end of the outer peripheral wall of the protective tube is provided with an external thread. The bottom of the shell is provided with an upwardly recessed groove. The inner peripheral wall of the groove is provided with an internal thread. The top wall of the groove is provided with several air extraction holes. All air extraction holes are connected to the air pressure structure. When the external thread and the internal thread are tightened, the several air extraction holes correspond one-to-one with the several negative pressure holes.

6. The automatic subcutaneous insulin injection device for endocrinology according to claim 5, characterized in that, The inner wall of the housing is provided with an annular venting groove, which is connected to all the air extraction holes. The air pressure structure includes an air pump and an air extraction pipe. The air pump is connected to the air extraction pipe, and the air extraction pipe is connected to the venting groove.

7. The automatic subcutaneous insulin injection device for endocrinology according to claim 5, characterized in that, The housing has a hollow interior forming a receiving cavity. A guide hole is provided at the center of the top wall of the groove. The guide hole extends upward and communicates with the receiving cavity. The first pneumatic telescopic component includes a cylinder and a guide tube. The cylinder is fixedly disposed in the receiving cavity and connected to the pneumatic structure. The guide tube passes through the guide hole. The cylinder is connected to the guide tube to drive the guide tube to move along the guide hole. The second pneumatic telescopic component is disposed inside the guide tube. When the needle is detachably installed below the housing, the upper end of the syringe abuts against the lower end of the catheter, and the upper end of the piston rod extends into the catheter and connects to the second pneumatic telescopic component.

8. The automatic subcutaneous insulin injection device for endocrinology according to claim 7, characterized in that, The second pneumatic telescopic component includes a bellows, a fixed plate, and a push plate. The fixed plate is fixedly disposed inside the guide tube, and the push plate is slidably disposed inside the guide tube. The push plate abuts against the upper end of the piston rod. The upper end of the corrugated pipe is fixedly connected to the fixed plate, and the lower end is fixedly connected to the push plate. The fixed plate is provided with an inflation pipe and an exhaust pipe that are respectively connected to the corrugated pipe. The corrugated pipe can be extended when inflated. The inflation pipe and the exhaust pipe are respectively connected to the air pressure structure.

9. The automatic subcutaneous insulin injection device for endocrinology according to claim 1, characterized in that, The bottom of the protective tube is provided with a retaining ring, and a spring is connected between the lower end of the syringe and the retaining ring.

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