Safety syringe special for diabetics

Abstract

The invention provides a safety syringe special for diabetics, and relates to the technical field of syringes, the safety syringe comprises an injection tube and a medicine taking bottle, the opening part of the medicine taking bottle is provided with a diaphragm used for sealing liquid medicine, the injection tube is internally and movably provided with a piston propeller, and the outer wall of the tail end of the injection tube is fixedly provided with a handle; a tube sleeve is fixedly installed on the outer wall of the front end of the injection tube, the tube sleeve is in threaded connection with the opening part of the medicine taking bottle, a spine part is fixedly installed in the tube sleeve, a channel communicated with the interior of the injection tube is arranged in the spine part, and an exhaust assembly is installed at the front end of the interior of the injection tube. The medicine taking bottle is rotated, the opening of the medicine taking bottle can be arranged in the tube sleeve, and in the process, the spine part punctures the diaphragm to enable the interior of the injection tube to be communicated with the interior of the medicine taking bottle through a channel of the spine part, so that a patient can conveniently take the medicine during injection by himself, the phenomenon of puncturing the hand is avoided, and the safety of the injector is improved.

Description

Technical Field

[0001] The invention relates to the technical field of syringes, in particular to a special safety syringe for diabetics. Background Art

[0002] Diabetes is a metabolic disease characterized by high blood sugar, mainly due to insulin secretion defects. The human body is in a state of high blood sugar for a long time, leading to chronic damage to the eyes, kidneys, heart, etc. Injecting insulin with a syringe before the human body ingests food is a common treatment method for treating diabetes and lowering blood sugar. Insulin injections generally require professional medical staff to perform the injection. Some patients' family members learn injection techniques from professional medical staff and then perform the injections themselves at home. The amount of each injection is not much, but an injection is required every time food is ingested.

[0003] After searching, in the prior art, there is an efficient and safe syringe specially used for diabetics with the authorization publication number CN213491171U. Aiming at the problem that the existing syringe cannot control the injection volume of each injection, if too much is injected, the patient will have symptoms of hypoglycemia, if too little is injected, the blood sugar in the patient's body cannot be lowered, and the protection is poor, the following scheme is proposed, which includes a syringe, a protective shell is installed on one side of the syringe, a push rod is slidably installed in the syringe, one end of the push rod is fixedly connected to a push plate, a first mounting plate is fixedly installed on one side of the syringe, a movable groove is opened on one side of the first mounting plate, a screw is slidably installed in the movable groove, a first limiting plate is fixedly installed on one end of the screw, a nut is threadedly installed on the screw, the structure is reasonable, and the operation is convenient. The syringe can control the injection volume of each injection, has good safety performance, and good protection.

[0004] In the above technical scheme, when patients inject themselves, they need to use a syringe to extract insulin from the medicine bottle, and the needle needs to be inserted into the bottle mouth when extracting. Since the bottle mouth is small, it is not convenient for patients to extract. This extraction method can easily cause patients to injure their hands, and it is difficult to fully extract the medicine when the needle enters the bottle mouth. The needle position needs to be adjusted according to the remaining position of the medicine, which is not conducive to patient use and is prone to residual problems. For this reason, we propose a safety syringe specifically for diabetics. Summary of the invention

[0005] Technical issues solved In view of the deficiencies in the prior art, the present invention provides a safety syringe specially designed for diabetics, which solves the problem that when patients inject themselves, they need to use a syringe to extract insulin from a medicine bottle. When extracting, they need to insert a needle into the bottle mouth, which is not convenient for patients to extract due to the small bottle mouth. This extraction method can easily cause patients to injure their hands, and it is difficult to fully extract the medicine when the needle enters the bottle mouth. The needle position needs to be adjusted according to the remaining position of the medicine, which is not convenient for patients to use and is prone to other technical problems.

[0006] Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solutions: a safety syringe specially used for diabetics, comprising a syringe and a medicine bottle, the opening of the medicine bottle is provided with a diaphragm for sealing the medicine solution, a piston pusher is movably installed inside the syringe, a handle is fixedly installed on the outer wall of the end of the syringe, a sleeve is fixedly installed on the outer wall of the front end of the syringe, the sleeve is threadedly connected to the opening of the medicine bottle, a spike portion is fixedly installed inside the sleeve, a channel connected to the inside of the syringe is provided inside the spike portion, an exhaust assembly is installed at the front end of the syringe, and the exhaust assembly is connected to an injection needle.

[0007] Preferably, the channel includes a side opening opened on the outer wall of the spike portion, and a connecting groove is provided inside the side opening. One end of the connecting groove is connected to the side opening, and the other end of the connecting groove is connected to the interior of the injection tube. When the medicine bottle is threadedly installed inside the tube sleeve, the spike portion pierces the inner side of the diaphragm, the side opening of the spike portion is located on the inner side of the diaphragm, and the lower edge of the side opening is in the same plane as the inner surface of the diaphragm.

[0008] Preferably, an air inlet channel is opened between the spike portion and the inside of the tube sleeve, the upper end of the air inlet channel is arranged on one side of the side opening of the outer surface of the spike portion, the lower end of the air inlet channel is arranged on the outer wall of the tube sleeve, and a one-way valve is installed inside the air inlet channel.

[0009] Preferably, the exhaust assembly includes a rotating member rotatably mounted inside the front end opening of the injection tube, one end of the rotating member located outside the injection tube is fixedly connected to a needle tube fixed end, and an injection needle tube is mounted on the needle tube fixed end.

[0010] Preferably, one end of the rotating part located inside the injection tube is fixedly connected to a threaded end, the outer wall of the threaded end is movably sleeved with a movable part, a sealing ring movably connected to the inner wall of the injection tube is installed along the edge of the outer wall of the movable part, the inner wall of the movable part is threadedly connected to the outer wall of the threaded end, an entry channel is opened on the outer wall of the movable part, one end of the entry channel is connected to the inside of the connecting groove, and the other end of the entry channel is arranged on the surface of one end of the movable part away from the rotating part.

[0011] Preferably, a plurality of guide blocks are fixedly connected to the outer wall of the movable part, a plurality of arc guide grooves corresponding to the guide blocks are opened on the inner wall of the injection tube, the guide blocks are slidably installed in the corresponding arc guide grooves, and a transverse guide groove is opened on the inner wall of the injection tube at the end of the arc guide groove.

[0012] Preferably, a through hole is provided at the center of one end of the movable part away from the rotating part, the interior of the through hole is connected to the interior of the movable part, a through hole seal is integrally formed at one end of the threaded end close to the through hole, and a rubber ring is fixedly installed on the outer wall of the through hole seal in interference fit with the inner wall of the through hole.

[0013] Preferably, a central hole is provided inside the through-hole seal, the threaded end, the rotating member and the fixed end of the needle tube, and the front end of the central hole passes through the fixed end of the needle tube.

[0014] Preferably, a plurality of drug inlet holes are provided on the outer wall of the through hole sealing member on one side of the rubber ring close to the threaded end, and the interior of the drug inlet holes is connected to the interior of the middle hole.

[0015] Preferably, the end surface of the movable part away from the rotating part is arranged as a tapered groove, and the shape of the front end of the piston of the piston pusher is consistent with the internal shape of the tapered groove.

[0016] Beneficial Effects

[0017] The present invention provides a safety syringe for diabetics, which has the following beneficial effects: During use, by docking the medicine bottle with the tube sleeve and rotating the medicine bottle, the opening of the medicine bottle can be inserted into the tube sleeve. During this process, the sharp thorns pierce the diaphragm so that the inside of the injection tube is connected with the inside of the medicine bottle through the channel of the sharp thorns, which is convenient for patients to take medicine when injecting by themselves, avoiding the phenomenon of pricking their hands, and improving the safety of the syringe; After installation, the lower edge of the side port is in the same plane with the diaphragm. When taking medicine, the bottle mouth is facing downward, and the medicine liquid will gather at the diaphragm part of the bottle mouth and enter the connecting groove and the injection tube through the side port, avoiding the need to adjust the needle position when taking medicine, making it convenient for patients to take medicine by themselves and avoiding residual medicine liquid.

[0018] During use, by rotating the fixed end of the needle tube, the rotating part can be driven to drive the threaded end to rotate synchronously. When the movable part is not subjected to resistance, the threaded connection method can increase the friction force, so that the movable part and the threaded end rotate coaxially. The guide block outside the movable part moves along the arc-shaped guide groove as a path, and can adjust the angle between the movable part and the entrance of the entry channel, thereby isolating the entry channel from the connection groove, adjusting the working mode of the syringe, converting the state of inhaling the liquid medicine into the injection state, and sealing the connection groove; When the guide block moves to the connection position of the arc guide groove and the transverse guide groove, the guide block contacts the inner wall of the arc guide groove, generating resistance to block the rotation of the movable part. At this time, the threaded movable part rotates with the threaded end, and the external thread of the threaded end is used as the path to drive the movable part to move through the guide block and the transverse guide groove as the path, so that the movable part moves toward the middle of the injection tube. At the same time, the through-hole sealing part moves through the through-hole into the interior of the movable part. In this way, the movable part squeezes the medicine liquid inside the injection tube, thereby pressing the air at the top of the injection tube into the through-hole for discharge. The air sucked into the injection tube when the medicine liquid is sucked into the injection tube is discharged by rotating, which can gradually increase the pressure to avoid the waste of medicine liquid due to high pressure during exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from a top view; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at AA in FIG. Figure 4 for Figure 3 Schematic diagram of the structure enlarged at B in FIG. Figure 5 for Figure 4 Schematic diagram of the structure enlarged at C in FIG. Figure 6 It is a structural schematic diagram of the injection tube and the movable parts of the present invention; Figure 7 for Figure 6 Schematic diagram of the structure enlarged at D in FIG. Figure 8 It is a schematic diagram of the structure inside the injection tube of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of the structure enlarged at E in FIG. Fig.10 It is a schematic structural diagram of the movable part and the tapered groove of the present invention.

[0020] Among them, 1. injection tube; 2. handle; 3. piston pusher; 4. tube sleeve; 41. spike part; 42. side port; 43. connecting groove; 44. air inlet channel; 45. one-way valve; 5. medicine bottle; 51. diaphragm; 6. exhaust assembly; 61. rotating part; 611. middle hole; 612. medicine inlet hole; 62. needle tube fixed end; 63. threaded end; 64. movable part; 641. entry channel; 642. guide block; 643. arc guide groove; 644. transverse guide groove; 65. through hole; 66. through hole seal; 7. injection needle tube. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0022] like Figure 1-Figure 10 As shown, the embodiment of the present invention provides a safety syringe for diabetics, including an injection tube 1 and a medicine bottle 5, the opening of the medicine bottle 5 is provided with a diaphragm 51 for sealing the medicine solution, the medicine bottle 5 contains insulin, a piston pusher 3 is movably installed inside the injection tube 1, a piston is installed at one end of the piston pusher 3 located inside the injection tube 1, a handle 2 is fixedly installed on the outer wall of the end of the injection tube 1, a tube sleeve 4 is fixedly installed on the outer wall of the front end of the injection tube 1, the tube sleeve 4 is threadedly connected to the opening of the medicine bottle 5, and a spike is fixedly installed inside the tube sleeve 4 The spike portion 41 is provided with a passage communicating with the inside of the injection tube 1. An exhaust assembly 6 is installed at the front end of the injection tube 1. The exhaust assembly 6 is connected with the injection needle 7. In use, by docking the medicine bottle 5 with the tube sleeve 4 and rotating the medicine bottle 5, the opening of the medicine bottle 5 can be inserted into the tube sleeve 4. In this process, the spike portion 41 pierces the diaphragm 51 so that the inside of the injection tube 1 is connected with the inside of the medicine bottle 5 through the passage of the spike portion 41, which is convenient for patients to take medicine when injecting by themselves, avoiding the phenomenon of pricking their hands, and improving the safety of the syringe; During use, the piston pusher 3 drives the piston to move, which can generate negative pressure inside the injection tube 1, thereby sucking the drug solution into the injection tube 1.

[0023] like Figure 3 , Figure 4 and Figure 5 As shown, in the present embodiment, the channel includes a side opening 42 opened on the outer wall of the spike portion 41, and the inside of the side opening 42 and the inside of the spike portion 41 are provided with a connecting groove 43, one end of the connecting groove 43 is connected with the side opening 42, and the other end of the connecting groove 43 is connected with the inside of the injection tube 1. When the medicine bottle 5 is threadedly installed into the inside of the tube sleeve 4, the spike portion 41 penetrates into the inner side of the diaphragm 51, and the side opening 42 of the spike portion 41 is located on the inner side of the diaphragm 51, and the lower edge of the side opening 42 is in the same plane with the inner surface of the diaphragm 51. After installation, the lower edge of the side opening 42 is in the same plane with the diaphragm 51. When the bottle mouth is facing downward during medicine taking, the medicine liquid will gather in the diaphragm part of the bottle mouth, and enter the connecting groove 43 and the inside of the injection tube 1 through the side opening 42, avoiding the need to adjust the needle position when taking medicine, thereby facilitating the patient to take medicine by themselves and avoiding residual medicine liquid.

[0024] like Figure 5 and Fig. 9 As shown, in the present embodiment, an air inlet channel 44 is opened inside the spike portion 41 and the tube sleeve 4, the upper end of the air inlet channel 44 is arranged on one side of the side opening 42 on the outer surface of the spike portion 41, and the lower end of the air inlet channel 44 is arranged on the outer wall of the tube sleeve 4, and a one-way valve 45 is installed inside the air inlet channel 44. During the drug taking process, the drug liquid flows into the injection tube 1, and a negative pressure state will appear inside the drug bottle 5. External air is sucked into the air inlet channel 44 and the inside of the drug bottle 5 through the negative pressure, and the one-way valve 45 can prevent the drug liquid from flowing out through the air inlet channel 44.

[0025] like Figure 4 As shown, in this embodiment, the exhaust component 6 includes a rotating member 61 rotatably mounted inside the front end opening of the injection tube 1, and one end of the rotating member 61 located outside the injection tube 1 is fixedly connected to a needle tube fixed end 62, and an injection needle tube 7 is installed on the needle tube fixed end 62. The injection needle tube 7 and the needle tube fixed end 62 are fixed by interference connection after insertion, threaded connection or snap-on connection.

[0026] like Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, in this embodiment, one end of the rotating member 61 located inside the injection tube 1 is fixedly connected to a threaded end 63, and the outer wall of the threaded end 63 is movably sleeved with a movable member 64. A sealing ring movably connected to the inner wall of the injection tube 1 is installed along the outer wall of the movable member 64. The inner wall of the movable member 64 is threadedly connected to the outer wall of the threaded end 63. An entry channel 641 is provided on the outer wall of the movable member 64. One end of the entry channel 641 is connected to the inside of the connecting groove 43, and the other end of the entry channel 641 is arranged on the end surface of the movable member 64 away from the rotating member 61. A plurality of guide blocks 642 are fixedly connected to the outer wall of the movable member 64. A plurality of arc-shaped guide grooves 643 corresponding to the guide blocks 642 are provided on the inner wall of the injection tube 1. The guide blocks 642 are slidably installed in the corresponding arc-shaped guide grooves 643. The inner wall of the injection tube 1 is provided with an arc-shaped guide groove 643 at the end thereof. A transverse guide groove 644 is provided, and a through hole 65 is provided at the center of one end of the movable member 64 away from the rotating member 61. The interior of the through hole 65 is connected to the interior of the movable member 64. A through hole seal 66 is integrally formed at one end of the threaded end 63 close to the through hole 65. In use, the rotating member 61 can be driven to drive the threaded end 63 to rotate synchronously by rotating the fixed end 62 of the needle tube. When the movable member 64 is not subjected to resistance, the threaded connection method can increase the friction force, so that the movable member 64 and the threaded end 63 rotate coaxially. The guide block 642 outside the movable member 64 moves along the arc-shaped guide groove 643 as a path, and can adjust the angle between the movable member 64 and the entrance of the entry channel 641, thereby isolating the entry channel 641 from the connecting groove 43, adjusting the working mode of the syringe, converting the state of inhaling the liquid medicine into the state of injection, and sealing the connecting groove 43. When the guide block 642 moves to the connection position of the arc guide groove 643 and the transverse guide groove 644, the guide block 642 contacts the inner wall of the arc guide groove 643, generating resistance to block the rotation of the movable part 64. At this time, the threaded movable part 64 rotates with the threaded end 63, and the movable part 64 moves along the outer thread of the threaded end 63 through the guide block 642 and along the transverse guide groove 644, so that the movable part 64 moves toward the middle of the injection tube 1. At the same time, the through hole seal 66 moves through the through hole 65 into the movable part 64, so that the movable part 64 squeezes the liquid medicine inside the injection tube 1, thereby pressing the air at the top of the injection tube 1 into the through hole 65 for discharge. The air sucked into the injection tube 1 when the liquid medicine is sucked into the injection tube 1 is discharged by rotating, which can gradually increase the pressure to avoid the waste of liquid medicine due to high pressure during exhaust.

[0027] In this embodiment, a rubber ring which is in interference connection with the inner wall of the through hole 65 is fixedly mounted on the outer wall of the through hole sealing member 66 . The rubber ring in interference connection can increase the friction between the through hole sealing member 66 and the through hole 65 .

[0028] like Figure 3 and Figure 4As shown, in the present embodiment, a middle hole 611 is provided inside the through hole seal 66, the threaded end 63, the rotating part 61 and the fixed end 62 of the needle tube, and the front end of the middle hole 611 is arranged to penetrate the fixed end 62 of the needle tube. A plurality of medicine feed holes 612 are provided on the outer wall of the through hole seal 66 on the side of the rubber ring close to the threaded end 63. The inside of the medicine feed holes 612 is connected with the inside of the middle hole 611. After air or liquid medicine enters the through hole 65, it enters the inside of the movable part 64, and enters the middle hole 611 and the inside of the injection needle tube 7 through the medicine feed hole 612 to complete the injection and discharge work.

[0029] like Fig.10 As shown, in this embodiment, the end surface of the movable part 64 away from the rotating part 61 is set as a conical groove, and the front end shape of the piston of the piston pusher 3 is consistent with the internal shape of the conical groove. When the injection tube 1 and the injection needle tube 7 are facing upward, the conical groove can gather the air at the top through hole 65 for easy discharge.

[0030] Working principle: During use, by docking the medicine bottle 5 with the tube sleeve 4 and rotating the medicine bottle 5, the opening of the medicine bottle 5 can be inserted into the tube sleeve 4. During this process, the spike portion 41 pierces the diaphragm 51 so that the interior of the injection tube 1 is connected with the interior of the medicine bottle 5 through the channel of the spike portion 41. By driving the piston to move by the piston pusher 3, negative pressure can be generated inside the injection tube 1, thereby sucking the medicine liquid into the injection tube 1.

[0031] In use, by rotating the fixed end 62 of the needle tube, the rotating member 61 can be driven to drive the threaded end 63 to rotate synchronously. When the movable member 64 is not subjected to resistance, the threaded connection method can increase the friction force, so that the movable member 64 and the threaded end 63 rotate coaxially. The guide block 642 outside the movable member 64 moves along the arc-shaped guide groove 643, and can adjust the angle between the movable member 64 and the entrance of the entry channel 641, thereby isolating the entry channel 641 from the connecting groove 43, adjusting the working mode of the syringe, converting the state of inhaling the liquid medicine into the state of injection, and sealing the connecting groove 43. When the guide block 642 moves to the connection position of the arc guide groove 643 and the transverse guide groove 644, the guide block 642 contacts the inner wall of the arc guide groove 643, generating resistance to block the rotation of the movable part 64. At this time, the threaded movable part 64 rotates with the threaded end 63, and the movable part 64 moves along the outer thread of the threaded end 63 through the guide block 642 and along the transverse guide groove 644, so that the movable part 64 moves toward the middle of the injection tube 1. At the same time, the through hole seal 66 moves through the through hole 65 into the movable part 64, so that the movable part 64 squeezes the liquid medicine inside the injection tube 1, thereby pressing the air at the top of the injection tube 1 into the through hole 65 for discharge. The air sucked into the injection tube 1 when the liquid medicine is sucked into the injection tube 1 is discharged by rotating, which can gradually increase the pressure to avoid the waste of liquid medicine due to high pressure during exhaust.

[0032] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation modes of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation modes here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A safety syringe for diabetics, comprising an injection tube (1) and a medicine bottle (5), wherein the opening of the medicine bottle (5) is provided with a diaphragm (51) for sealing the medicine solution, a piston pusher (3) is movably installed inside the injection tube (1), and a handle (2) is fixedly installed on the outer wall of the end of the injection tube (1), characterized in that: A sleeve (4) is fixedly mounted on the outer wall of the front end of the injection tube (1), the sleeve (4) being threadedly connected to the opening of the medicine bottle (5), a spike portion (41) is fixedly mounted inside the sleeve (4), a channel communicating with the interior of the injection tube (1) is provided inside the spike portion (41), an exhaust assembly (6) is mounted on the front end of the injection tube (1), and the exhaust assembly (6) is connected to an injection needle tube (7).

2. A safety syringe for diabetics according to claim 1, characterized in that: The passage comprises a side opening (42) formed on the outer wall of the spike portion (41), the inside of the side opening (42) and the inside of the spike portion (41) are provided with a connecting groove (43), one end of the connecting groove (43) is communicated with the side opening (42), and the other end of the connecting groove (43) is communicated with the inside of the injection tube (1), when the medicine bottle (5) is threadedly installed inside the tube sleeve (4), the spike portion (41) penetrates into the inside of the diaphragm (51), the side opening (42) of the spike portion (41) is located inside the diaphragm (51), and the lower edge of the side opening (42) is in the same plane as the inner surface of the diaphragm (51).

3. A safety syringe for diabetics according to claim 2, characterized in that: An air intake passage (44) is provided inside the spike portion (41) and the pipe sleeve (4); the upper end of the air intake passage (44) is arranged on one side of a side opening (42) on the outer surface of the spike portion (41); the lower end of the air intake passage (44) is arranged on the outer wall of the pipe sleeve (4); and a one-way valve (45) is installed inside the air intake passage (44).

4. A safety syringe for diabetics according to claim 2, characterized in that: The exhaust assembly (6) comprises a rotating member (61) rotatably mounted inside the front end opening of the injection tube (1); one end of the rotating member (61) located outside the injection tube (1) is fixedly connected to a needle tube fixed end (62); and an injection needle tube (7) is mounted on the needle tube fixed end (62).

5. A safety syringe for diabetics according to claim 4, characterized in that: One end of the rotating member (61) located inside the injection tube (1) is fixedly connected to a threaded end (63); the outer wall of the threaded end (63) is movably sleeved with a movable member (64); a sealing ring movably connected to the inner wall of the injection tube (1) is installed along the outer wall of the movable member (64); the inner wall of the movable member (64) is threadedly connected to the outer wall of the threaded end (63); an entry channel (641) is opened on the outer wall of the movable member (64); one end of the entry channel (641) is connected to the inside of the connecting groove (43); the other end of the entry channel (641) is arranged on the surface of one end of the movable member (64) away from the rotating member (61).

6. A safety syringe for diabetics according to claim 5, characterized in that: A plurality of guide blocks (642) are fixedly connected to the outer wall of the movable part (64); a plurality of arc-shaped guide grooves (643) corresponding to the guide blocks (642) are provided on the inner wall of the injection tube (1); the guide blocks (642) are slidably mounted in the corresponding arc-shaped guide grooves (643); and a transverse guide groove (644) is provided on the inner wall of the injection tube (1) at the end of the arc-shaped guide groove (643).

7. A safety syringe for diabetics according to claim 6, characterized in that: A through hole (65) is provided at the center of one end of the movable member (64) away from the rotating member (61); the interior of the through hole (65) is communicated with the interior of the movable member (64); a through hole seal (66) is integrally formed at one end of the threaded end (63) close to the through hole (65); a rubber ring is fixedly mounted on the outer wall of the through hole seal (66) and is in interference fit with the inner wall of the through hole (65).

8. A safety syringe for diabetics according to claim 7, characterized in that: A central hole (611) is provided inside the through-hole sealing member (66), the threaded end (63), the rotating member (61) and the needle tube fixed end (62), and the front end of the central hole (611) passes through the needle tube fixed end (62).

9. A safety syringe for diabetics according to claim 8, characterized in that: A plurality of drug inlet holes (612) are provided on the outer wall of the through hole sealing member (66) on a side of the rubber ring close to the threaded end (63), and the interior of the drug inlet holes (612) is connected to the interior of the middle hole (611).

10. A safety syringe for diabetics according to claim 9, characterized in that: The surface of one end of the movable member (64) away from the rotating member (61) is provided with a tapered groove, and the shape of the front end of the piston of the piston pusher (3) is consistent with the internal shape of the tapered groove.

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