Repeated-prevention insulin injection needle

Abstract

An anti-repetition insulin injection needle relates to the technical field of medical instruments and comprises a protective cover, a needle, a connecting block and a needle seat, the protective cover is arranged at the front end of the needle seat and sealed, the needle and the connecting block are both arranged in the needle seat, and the needle communicated with the inside and the outside of the connecting block is arranged on one side, away from a through hole, of the connecting block in a penetrating mode. An adjusting ring is arranged outside one side of the connecting block, a fixing hook is arranged on the side face of the adjusting ring, a spring is coaxially arranged on the side, away from the connecting block, of the adjusting ring, the fixing hook makes contact with a gear ring on the surface of the connecting block, and after the needle head is used, the fixing hook is matched with a clamping block on the needle base in a hooked mode; according to the repeated-use-preventing syringe needle for the insulin injection pen, a special repeated-use-preventing structure is arranged, so that the syringe needle can be safely recycled and cannot be pressed and popped out again after a patient uses the syringe needle for injection, the sanitation and safety problems caused by improper operation of the patient are effectively reduced, and the syringe needle is simple in structure, easy to use, convenient to manufacture and high in practicability. And good economic benefits can be generated.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an anti-repetitive insulin injection needle. Background Art

[0002] The surge in the number of diabetes patients worldwide has made the standardization and safety of insulin injections increasingly prominent. It is estimated that the number of adult diabetes patients worldwide has exceeded 800 million. Diabetic patients need long-term insulin injections to control blood sugar levels, but improper injection methods may lead to a variety of complications. For example, irregular injection behaviors, such as failure to replace needles in time, failure to disinfect before and after injection, incorrect injection angles, repeated injections in the same area, and failure to stay for the prescribed time after injection, may have serious effects on the patient's health.

[0003] The hazards of reusing insulin injection needles are particularly serious. It may cause the needle to break or become clogged, causing subcutaneous tissue hyperplasia and inflammation, affecting insulin absorption, causing unstable blood sugar control, and increasing the patient's pain and financial burden. In addition, patients are concerned about the cost of frequently changing needles, and often forget or do not change needles because it is too troublesome. Some patients also have problems such as weak awareness of disinfection or incorrect methods.

[0004] When diabetic patients inject insulin, they often forget to change the injection site and only change it when they feel pain. At the same time, they should avoid pressing the skin to cause depression during injection to prevent the needle from penetrating too deeply and reaching the muscle tissue. Correct injection technique is crucial for diabetic patients to control blood sugar. Therefore, providing a disposable insulin injection pen needle with a simple and standardized injection process is the key to improving patients' quality of life and reducing complications. Summary of the invention

[0005] In view of this, the object of the present invention is to provide an anti-duplicate insulin injection needle, which can guide the correct injection process, reduce skin damage, and improve injection quality.

[0006] In order to solve at least one of the above technical problems, the technical solution provided by the present invention is:

[0007] An anti-repeated insulin injection needle comprises a protective cover, a needle, a connecting block and a needle seat, wherein the needle seat is a round tube structure with holes on both sides, and the protective cover is detachably arranged at the front end of the needle seat and seals the through hole at the front end of the needle seat;

[0008] The needle and the connecting block are both arranged inside the needle seat, wherein the connecting block is a cylindrical structure with a through hole on one side, the through hole of which points to the through hole at the rear end of the needle seat, an interlayer is arranged between the outer side of the connecting block and the inner surface of the needle seat, and a needle connecting the inside and outside of the connecting block is arranged on one side of the connecting block away from the through hole;

[0009] An adjustment ring is arranged on the outside of one side of the connection block away from the through hole thereof, the needle head passes through the central through hole of the adjustment ring, and a fixing hook capable of extending into the sandwich between the connection block and the needle seat is arranged on the side of the adjustment ring;

[0010] A spring is coaxially arranged on one side of the adjusting ring away from the connecting block. The spring is arranged around the needle head, one side of the spring contacts the adjusting ring, and the other side of the spring can contact the needle seat.

[0011] The side of the connection block is also provided with a toothed ring and a positioning protrusion located in the sandwich between the connection block and the needle seat. When the connection block is in a vertical state, the toothed ring is arranged on the top of the positioning protrusion distributed in the vertical direction; the toothed ring is a circular ring composed of multiple groups of connected teeth with shrinking widths, which is sleeved on the side of the connection block, and the end points of the maximum width sides of adjacent teeth are connected to form a ring, so that the surface of the toothed ring is wavy; the positioning protrusion contacts the maximum width side of the tooth body, and the minimum width of the tooth body can contact the fixed hook, and the fixed hook can slide along the shrinking part of the tooth body. In the initial state, the adjustment ring contacts the connection block through the fixed hook;

[0012] The inner surface of the needle seat is also provided with a sliding slope and a card block, which are both raised parts in the connecting block and the interlayer of the needle seat, and the card block can be hooked and cooperated with the fixed hook. When the needle seat is vertically set, the card block is located above the lowest point of the sliding slope; in the initial state, the sliding slope contacts the gear ring, wherein the lowest point of the sliding slope contacts the trough of the tooth body where the fixed hook is located.

[0013] One implementation of the present invention is that a connection reinforcement piece extending into the interior of the needle seat is coaxially clamped at the front end thereof, the connection reinforcement piece is a round tube with an outer diameter smaller than the inner diameter of the adjustment ring, and the needle tip extends into the connection reinforcement piece.

[0014] Furthermore, the front end of the connecting reinforcement piece is provided with an exhaust and liquid accumulation part composed of an annular groove, and the needle extends into the exhaust and liquid accumulation part.

[0015] Furthermore, a disinfectant alcohol cotton and a pull-out film are provided at the front end of the connecting reinforcement piece, and the pull-out film is connected to the disinfectant alcohol cotton.

[0016] An implementation manner of the present invention is that a ring-shaped marking sponge is arranged at the front end of the needle seat.

[0017] An embodiment of the present invention is that a sliding groove capable of cooperating with the positioning protrusion is provided on the inner wall of the needle seat, and when the connecting block moves along its axial direction, the positioning protrusion moves along the sliding groove; when the spring is at its natural length, the positioning protrusion is located in the sliding groove as a whole.

[0018] An implementation manner of the present invention is that the through hole at the front end of the needle seat is a reduced diameter hole.

[0019] An implementation manner of the present invention is that a sealing sticker for sealing the through hole at the rear end of the needle seat is detachably provided thereon.

[0020] An implementation manner of the present invention is that a connecting thread is circumferentially provided on the inner wall of the connecting block.

[0021] An implementation manner of the present invention is that the shape of the tooth body is one of a triangle, a semicircle, and a trapezoid.

[0022] The technical effects of the present invention are:

[0023] The present invention provides a needle for an insulin injection pen that prevents reuse. The needle is provided with a special anti-reuse structure so that the needle can be safely recovered after the patient uses the needle for injection and cannot be ejected by pressing it again, thereby effectively reducing the patient's health and safety problems caused by improper operation. The needle has a simple structure, is easy to use, and is easy to manufacture, and can produce better economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is an overall axonometric view of the present invention;

[0026] Figure 2 is an overall cross-sectional view of the present invention;

[0027] Figure 3 It is a partial schematic diagram of the interior of the present invention;

[0028] Figure 4 It is an axonometric schematic diagram of the inner wall of the needle seat in the present invention;

[0029] Figure 5 It is an external axonometric schematic diagram of the connecting block in the present invention;

[0030] Figure 6 yes Figure 2 A partial enlarged view of the middle A;

[0031] Figure 7 yes Figure 4 A partial enlarged view of point B in the middle;

[0032] In the figure, 1-protective cover, 2-disinfectant alcohol cotton, 3-pull-out film, 4-marking sponge, 5-connecting reinforcement, 6-exhaust and liquid accumulation place, 7-spring, 8-adjusting ring, 9-needle, 10-connecting block, 11-needle seat, 12-sliding inclined plane, 13-block, 14-sliding groove, 15-connecting thread, 16-sealing sticker, 17-tooth ring, 18-positioning protrusion, 81-fixing hook. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the embodiments and drawings.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0035] See also Figure 1 , Figure 2 , Figure 3 , an anti-repeated insulin injection needle, comprising a protective cover 1, a needle 9, a connecting block 10, and a needle seat 11, wherein the needle seat 11 is a round tube structure with holes on both sides, and its front end is Figure 2 On one side of the middle top, the through hole at the front end of the needle seat 11 is a reduced diameter hole, which can facilitate the installation of the protective cover 1, and a sealing sticker 16 for sealing the through hole at the rear end of the needle seat 11 is detachably provided.

[0036] The protective cover 1 is detachably arranged at the front end of the needle seat 11 and seals the through hole at the front end of the needle seat 11 to protect the needle. When in use, the protective cover 1 needs to be removed first. In this example, an annular marking sponge 4 is arranged at the front end of the needle seat 11, which is filled with a liquid with an easily eluting pigment to assist in marking the injection position on the body surface.

[0037] The needle 9 and the connecting block 10 are both arranged inside the needle seat 11, wherein the connecting block 10 is a cylindrical structure with a through hole on one side, and the needle 9 connecting the inside and outside of the connecting block 10 is penetrated by the side of the connecting block 10 away from its through hole, and its through hole points to the through hole at the rear end of the needle seat 11. On the one hand, it is used to fix the needle 9, and on the other hand, it is used to connect the insulin pen. In this embodiment, the inner wall of the connecting block 10 is circumferentially provided with connecting threads 15 to facilitate the connection or disassembly of the insulin pen.

[0038] See also Figure 2, Figure 5 An adjusting ring 8 is provided on the outside of the connecting block 10 on one side away from the through hole thereof. When the needle is vertically arranged as a whole, the adjusting ring 8 will be located above the connecting block 10, and the needle 9 passes through the central through hole of the adjusting ring 8. A fixing hook 81 which can extend into the sandwich between the connecting block 10 and the needle seat 11 is provided on the side of the adjusting ring 8.

[0039] A spring 7 is coaxially arranged on the side of the adjusting ring 8 away from the connecting block 10. The spring 7 is arranged around the needle 9, one side of the spring 7 is in contact with the adjusting ring 8, and the other side can be in contact with the needle seat 11. The side of the spring 7 in contact with the needle seat 11 is located above the spring 7, and because the through hole at the front end of the needle seat 11 is a reduced diameter hole, the spring 7 can be in contact with the needle seat 11 to form support when moving upward.

[0040] See also Figure 5 , Figure 6 , an interlayer is provided between the outer side surface of the connecting block 10 and the inner surface of the needle seat 11, and a toothed ring 17 and a positioning protrusion 18 are also provided on the side surface thereof, which are located in the interlayer between the connecting block 10 and the needle seat 11. When the connecting block 10 is in a vertical state, the toothed ring 17 is arranged on the top of the positioning protrusion 18 distributed in the vertical direction; the toothed ring 17 is a circular ring composed of a plurality of groups of connected teeth with shrinking widths and sleeved on the side surface of the connecting block 10, and the endpoints of the maximum width sides of adjacent teeth are connected to form a ring, so that the surface of the toothed ring 17 is wavy, that is, Figure 5 The ring body shown in the figure has the tooth tip facing upward, and the structure of the tooth body is a top tip contracted shape, and its shape can be one of a triangle, a semicircle, and a trapezoid. In this embodiment, a triangular tooth body is used; the positioning protrusion 18 contacts the side with the largest width of the tooth body, and the smallest width of the tooth body can contact the fixing hook 81, and the fixing hook 81 can slide along the contracted part of the tooth body. The fixing hook 81 can be set to adopt a tip structure to contact the smallest width of the tooth body. When the fixing hook 81 moves downward, the tip can move downward along the inclined surface of the tooth body when it is misplaced. In the initial state, the adjusting ring 8 contacts the connecting block 10 through the fixing hook 81. It can be seen that the side of the adjusting ring 8 does not directly contact the connecting block 10, but is supported on the tooth ring 17 of the connecting block 10 through the fixing hook 81.

[0041] See also Figure 4 , Figure 7, the inner surface of the needle seat 11 is also provided with a sliding bevel 12 and a block 13, the sliding bevel 12 and the block are both raised parts in the sandwich of the connecting block 10 and the needle seat 11, the block 13 can be hooked and matched with the fixing hook 81, when the needle seat 11 is vertically arranged, the block 13 is located above the lowest point of the sliding bevel 12; in the initial state, the sliding bevel 12 is in contact with the tooth ring 17, that is, the tooth ring 17 is sandwiched between the connecting block 10 and the sliding bevel 12, and can move freely in the vertical direction, wherein the lowest point of the sliding bevel 12 is in contact with the trough of the tooth body where the fixing hook 81 is located, it can be seen that after the fixing hook 81 moves to the trough, if it moves toward the front end direction of the needle seat 11 (that is, Figure 5 When the fixing hook 81 moves in the vertical direction (as shown in FIG), the block 13 will move upward to be hooked with the fixing hook 81.

[0042] In this embodiment, a sliding groove 14 that can cooperate with the positioning protrusion 18 is provided on the inner wall of the needle seat 11. When the connecting block 10 moves along its axial direction, the positioning protrusion 18 moves along the sliding groove 14; when the spring 7 is at its natural length, the positioning protrusion 18 is located as a whole in the sliding groove 14. When the spring 7 is at its natural length, that is, when the needle is not in use, the positioning protrusion 18 is stuck in the sliding groove 14. At this time, the connecting block 10 and the gear ring 17 can only move in the vertical direction.

[0043] See also Figure 2 , Figure 3 The front end of the needle seat 11 is coaxially provided with a connecting reinforcement 5 extending into the interior thereof. The connecting reinforcement 5 is a round tube with an outer diameter smaller than the inner diameter of the adjusting ring 8. The needle 9 extends into the connecting reinforcement 5. The connecting reinforcement 5 is used to carry the disinfected alcohol cotton 2 and the pulling film 3, which are removed before injection.

[0044] The front end of the connecting reinforcement 5 is provided with an exhaust and liquid accumulation part 6 composed of an annular groove, and the needle 9 extends into the exhaust and liquid accumulation part 6. Before injection, the needle 9 needs to push out a part of the liquid to exhaust, and the discharged liquid can be stored in the exhaust and liquid accumulation part 6 for collection.

[0045] In summary, the use of the present invention is:

[0046] Under the condition of ensuring hygiene, take out a needle for the insulin injection pen of the present invention, check the sealing sticker 16 and tear it off, and connect the connecting block 10 and the insulin pen tip by twisting.

[0047] Before injection, first break open and remove the protective cover 1, wipe the injection site with disinfected alcohol cotton swab 2, then pinch the pull-out film 3 to remove the alcohol cotton swab, invert the injection pen to exhaust the liquid and air in the pen core, press the injection pen to exhaust and spray the liquid to slide to the internal exhaust and liquid accumulation place 6, then remove the connecting reinforcement 5, after the operation, aim the needle at the disinfected injection site, leave a ring mark around the injection site with the marking sponge 4, press to inject, wait ten seconds after the injection is completed, pull it out, the spring 7 rebounds the needle and recycles it and fixes it, the injection is completed, and the used needle is recycled.

[0048] During the injection process, pressing the insulin pen causes the connecting block 10 to be squeezed and move toward the front end of the needle seat 11, and the positioning protrusion 18 gradually slides out of the sliding groove 14. Restricted by the sliding groove 14, the connecting block 10 and the toothed ring 17 only produce axial movement but not circumferential rotation. At this time, the adjusting ring 8 is also squeezed synchronously, and the squeezing spring 7 begins to shrink. When the spring 7 shrinks to the minimum position, the fixing hook 81 on the adjusting ring 8 continues to be squeezed and squeezed from the tip of the tooth body to the corresponding trough of the tooth body, causing the adjusting ring 8 to rotate.

[0049] At this time, the needle 9 extends from the front end of the needle seat 11, enters the patient's epidermis, and begins to inject the drug. The injection stays for about 10 seconds, and the patient lets go of the force, the contraction spring 7 begins to rebound and extend, and the positioning protrusion 18 slides back into the sliding groove 14 along the original trajectory, and the adjustment ring 8 also begins to reset. The fixed hook 81 is now at the trough of the tooth body that was originally in contact with the top end. When resetting, it will slide obliquely along the sliding slope 12 to its lowest point. A card block 13 is provided at the front end of the lowest point of the sliding slope 12 (located above the lowest point of the sliding slope 12 when vertically set). When trying to use the needle again, pressing and pushing will cause the fixed hook 81 to move forward to hook and cooperate with the card block 13, so that the needle 9 cannot extend from the front end of the needle seat 11, and therefore cannot be used a second time.

[0050] In the description of the present invention, it should be pointed out that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions 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 direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0051] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the embodiments of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An anti-duplicate insulin injection needle, characterized in that: It comprises a protective cover (1), a needle (9), a connecting block (10), and a needle seat (11), wherein the needle seat (11) is a round tube structure with holes on both sides, and the protective cover (1) is detachably arranged at the front end of the needle seat (11) and seals the through hole at the front end of the needle seat (11); The needle (9) and the connecting block (10) are both arranged inside the needle seat (11), wherein the connecting block (10) is a cylindrical structure with a through hole on one side, wherein the through hole points to the through hole at the rear end of the needle seat (11), an interlayer is arranged between the outer side surface of the connecting block (10) and the inner surface of the needle seat (11), and a needle (9) is arranged on the side of the connecting block (10) away from the through hole to connect the inside and outside of the connecting block (10); An adjusting ring (8) is arranged on the outside of the connecting block (10) at a side away from the through hole thereof, the needle head (9) passes through the central through hole of the adjusting ring (8), and a fixing hook (81) capable of extending into the sandwich layer between the connecting block (10) and the needle seat (11) is arranged on the side of the adjusting ring (8); A spring (7) is coaxially arranged on one side of the adjusting ring (8) away from the connecting block (10); the spring (7) is arranged around the needle head (9), one side of the spring (7) is in contact with the adjusting ring (8), and the other side of the spring (7) is capable of contacting the needle seat (11); The side of the connection block (10) is also provided with a toothed ring (17) and a positioning protrusion (18) located in the sandwich between the connection block (10) and the needle seat (11); when the connection block (10) is in a vertical state, the toothed ring (17) is arranged on the top of the positioning protrusion (18) distributed in the vertical direction; the toothed ring (17) is a circular ring composed of a plurality of groups of connected teeth with contracted widths and sleeved on the side of the connection block (10); the end points of the sides with the largest widths of adjacent teeth are connected to form a ring, so that the surface of the toothed ring (17) is wavy; the positioning protrusion (18) contacts the side with the largest width of the teeth, and the part with the smallest width of the teeth can contact the fixing hook (81), and the fixing hook (81) can slide along the contracted part of the teeth; in the initial state, the adjustment ring (8) contacts the connection block (10) through the fixing hook (81); The inner surface of the needle seat (11) is also provided with a sliding inclined surface (12) and a clamping block (13). The sliding inclined surface (12) and the clamping block (13) are both protruding parts in the sandwich between the connecting block (10) and the needle seat (11). The clamping block (13) can be hooked and matched with the fixing hook (81). When the needle seat (11) is vertically arranged, the clamping block (13) is located above the lowest point of the sliding inclined surface (12); in the initial state, the sliding inclined surface (12) contacts the tooth ring (17), wherein the lowest point of the sliding inclined surface (12) contacts the trough of the tooth body where the fixing hook (81) is located.

2. The anti-duplicate insulin injection needle according to claim 1, characterized in that: The front end of the needle seat (11) is coaxially provided with a connecting reinforcement piece (5) extending into the interior thereof, the connecting reinforcement piece (5) being a round tube with an outer diameter smaller than the inner diameter of the adjusting ring (8), and the needle head (9) extending into the connecting reinforcement piece (5).

3. The anti-duplicate insulin injection needle according to claim 2, characterized in that: The front end of the connecting reinforcement member (5) is provided with an exhaust and liquid accumulation part (6) composed of an annular groove, and the needle (9) extends into the exhaust and liquid accumulation part (6).

4. The anti-duplicate insulin injection needle according to claim 2, characterized in that: The front end of the connection reinforcement member (5) is provided with a disinfectant alcohol cotton (2) and a pull-out film (3), and the pull-out film (3) is connected to the disinfectant alcohol cotton (2).

5. The anti-duplicate insulin injection needle according to claim 1, characterized in that: The front end of the needle seat (11) is provided with an annular marking sponge (4).

6. The anti-duplicate insulin injection needle according to claim 1, characterized in that: The inner wall of the needle seat (11) is provided with a sliding groove (14) capable of cooperating with the positioning protrusion (18); when the connecting block (10) moves along its axial direction, the positioning protrusion (18) moves along the sliding groove (14); when the spring (7) is at its natural length, the positioning protrusion (18) is entirely located in the sliding groove (14).

7. The anti-duplicate insulin injection needle according to claim 1, characterized in that: The through hole at the front end of the needle seat (11) is a reduced diameter hole.

8. The anti-duplicate insulin injection needle according to claim 1, characterized in that: A sealing sticker (16) for sealing the through hole at the rear end of the needle seat (11) is detachably provided thereon.

9. The anti-duplicate insulin injection needle according to claim 1, characterized in that: The inner wall of the connection block (10) is circumferentially provided with connection threads (15).

10. The anti-duplicate insulin injection needle according to claim 1, characterized in that: The shape of the tooth body is one of a triangle, a semicircle and a trapezoid.

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