Protective syringe needle for insulin injection

Abstract

The invention relates to the technical field of injection needles, in particular to a protective insulin injection needle which comprises a needle base, a protective shell is arranged on the outer side of the needle base, a sealing paste is arranged at the open end of the protective shell, and a protective assembly is arranged on the needle base. Two skin pulling assemblies corresponding to the protection assemblies are symmetrically arranged on the needle head seat; wherein the protection assembly comprises an injection needle and a reset spring, the injection needle is arranged on the bottom face of the needle head base in a penetrating mode, and the reset spring is arranged on the injection needle in a sleeving mode. Compared with the prior art, through the synergistic effect of the supporting elastic piece, the connecting plate, the lap joint plate and other assemblies, smooth operation of all parts in the whole injection process is guaranteed, the operation burden of a user is reduced, in addition, the needle can automatically retract into the needle base after being used, environmental pollution caused by random discarding is avoided, and the safety of the user is improved. Meanwhile, medical staff are protected against the risk of needle stick injury, and good environmental protection and social benefits are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection needles, and particularly to a protective insulin injection needle. Background Art

[0002] An insulin injection pen is an injection tool designed specifically for diabetic patients, featuring simple operation, precise dosage, painless injection, etc. It injects insulin into the subcutaneous tissue to achieve the effect of lowering blood sugar and is a key device for the daily management of diabetic patients.

[0003] Upon retrieval, a Chinese patent with the publication number CN220404564U discloses an insulin injection pen, belonging to the technical field of injection devices, which solves the technical problem that removing the needle in the prior art may accidentally injure medical staff and patients. The insulin injection pen provided in this application includes a driving device, a cartridge holder, a cartridge, a needle, and a button; the cartridge is installed inside the cartridge holder and protrudes from the front end portion of the cartridge holder; the needle is snap-fitted to the portion of the cartridge that protrudes from the cartridge holder; the cartridge holder is connected to the front end of the driving device, and a button capable of unlocking the needle from the cartridge is provided on the cartridge holder. This insulin injection pen does not require manual rotation of the needle multiple times when removing the needle, can quickly unlock the needle from the cartridge, and greatly reduces the possibility of medical staff and patients being accidentally injured by the needle. However, when this solution is actually used, there are still the following deficiencies:

[0004] During the use of an insulin injection pen, when medical staff remove the used needle from the insulin injection pen, the needle will remain exposed outside the needle hub. If the medical staff forget to correctly put the protective cap back on the outside of the needle and directly place it aside at this time, it may not only cause the needle to accidentally stab themselves or other staff, increasing the risk of blood-borne diseases, but also may cause environmental pollution or pose a safety hazard to others due to improper handling.

[0005] Therefore, the present application provides a protective insulin injection needle. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to propose a protective insulin injection needle to solve the problem of poor needle protection.

[0007] Based on the above purpose, the present invention provides a protective insulin injection needle, including a needle hub, a protective shell is provided on the outside of the needle hub, a sealing sticker is provided at the open end of the protective shell, a protection component is provided on the needle hub, and two groups of skin-poking components corresponding to the protection component are symmetrically provided on the needle hub;

[0008] Wherein, the protection component includes an injection needle and a return spring, the injection needle is arranged through the bottom surface of the needle seat, and the return spring is sleeved on the injection needle.

[0009] Preferably, the protection component also includes a bracket, a fixed needle, a limit ring and a limit mechanism, the bracket is fixedly mounted on the inner wall of the needle seat, the fixed needle is fixedly mounted on the inner wall of the bracket, and the injection needle is slidably connected to the fixed needle, the limit ring is fixedly sleeved on the outer wall of the injection needle located on the inner side of the needle seat, and the two ends of the reset spring are respectively fixedly connected to the limit ring and the bracket, and the limit mechanism is arranged on the inner wall of the needle seat.

[0010] Preferably, the limiting mechanism includes a U-shaped spring piece, a limiting rod and two push rods, the U-shaped spring piece is arranged on the inner bottom surface of the needle seat, and the end of the U-shaped spring piece away from the limiting ring is fixedly connected to the inner bottom surface of the needle seat, the limiting rod is fixedly installed on the top surface of the movable end of the U-shaped spring piece, and the two push rods are symmetrically fixedly installed on the movable end of the U-shaped spring piece.

[0011] Preferably, a limiting groove corresponding to the limiting rod is formed on the outer wall of the limiting ring, and the outer wall of the injection needle fits with the inner wall of the fixing needle.

[0012] Preferably, the skin peeling assembly includes a slot, an axle, a connecting plate, a lap plate, a supporting spring sheet, a protective arc plate and a wiping plate, the slot is formed on the outer wall of the needle seat, the axle is rotatably mounted on the inner wall of the slot, the connecting plate is fixedly sleeved on the outer wall of the axle, the lap plate is fixedly mounted on the top of the connecting plate, the supporting spring sheet is fixedly mounted between the inner wall of the slot and the side of the lap plate, the protective arc plate is fixedly mounted on the bottom end of the connecting plate, and the wiping plate is fixedly mounted on the bottom end of the protective arc plate.

[0013] Preferably, one end of the push rod away from the U-shaped spring piece passes through the outer wall of the needle seat and is located inside the slot, and the end of the push rod is opposite to the connecting plate.

[0014] Preferably, the arc protection plate and the wiper plate are located outside the injection needle, and the lap plate is inclined relative to the connecting plate.

[0015] Preferably, a side surface of one of the two arc protection plates is provided with a plurality of positioning grooves, and a side surface of the other arc protection plate is fixedly mounted with a plurality of positioning rods corresponding to the positioning grooves.

[0016] Preferably, the bottom surfaces of the two wiping boards are both provided with cotton boards, a film is fixedly mounted on the bottom inner wall of the protective shell, and medical alcohol is filled between the film and the protective shell.

[0017] Preferably, the inner wall of the protective shell is symmetrically provided with two clearance grooves corresponding to the overlapping plates.

[0018] Advantages of the present invention:

[0019] 1. For this protective insulin injection needle, by setting the skin-pressing component and through the cooperation of the protective shell and the wiping plate, the thin film is squeezed to break before the needle is inserted into the skin, soaking the cotton plate with medical alcohol, and using the cotton plate to disinfect the injection area, effectively reducing the risk of infection. At the same time, after the injection is completed, the protective arc plate can be reset under the action of the supporting elastic piece and can be firmly locked outside the injection needle through the design of the positioning rod and the positioning groove, preventing accidental injury caused by the exposed needle after use.

[0020] 2. For this protective insulin injection needle, by setting the needle base and the injection needle, simply pressing the insulin injection pen can open the protective arc plate to expose the injection needle, and after the injection is completed, by pressing the protective arc plate to reset it and releasing the limit on the injection needle through the mechanical structure, the injection needle can automatically retract into the needle base, simplifying the operation difficulty and improving the convenience of use.

[0021] 3. For this protective insulin injection needle, by setting the fixed needle and the limiting ring, through the coordinated action of components such as the supporting elastic piece, the connecting plate, and the overlapping plate, the smooth operation of each component during the whole injection process is ensured, reducing the operation burden of the user. In addition, after the needle is used, it can automatically retract into the needle base, avoiding environmental pollution caused by random disposal, and at the same time protecting medical staff from the risk of needle stick injuries, having good environmental and social benefits. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a partial cross-sectional structural schematic diagram of the needle base of the present invention;

[0025] Figure 3 It is Figure 2 The enlarged structural schematic diagram at A in

[0026] Figure 4 It is Figure 2 The enlarged structural schematic diagram at B in

[0027] Figure 5 It is a structural schematic diagram of the needle base of the present invention;

[0028] Figure 6 For Figure 5 the enlarged structural schematic diagram at position C in

[0029] Figure 7 the partial sectional view of the protective shell of the present invention.

[0030] The markings in the figure are:

[0031] 1. Needle head seat; 2. Protective shell; 3. Sealing sticker; 41. Bracket; 42. Fixed needle; 43. Injection needle; 44. Limit ring; 45. Return spring; 46. U-shaped elastic sheet; 47. Limit rod; 48. Thumb rod; 51. Slotted groove; 52. Shaft rod; 53. Connecting plate; 54. Lapping plate; 55. Supporting elastic sheet; 56. Protective arc plate; 561. Positioning rod; 562. Positioning groove; 57. Wiping plate; 6. Cotton plate; 7. Film; 8. Relief groove. Specific embodiments

[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0033] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] As Figures 1 to 7 shown, a protective insulin injection needle includes a needle head seat 1, a protective shell 2 is arranged outside the needle head seat 1, a sealing sticker 3 is arranged at the open end of the protective shell 2, a protective component is arranged on the needle head seat 1, and two groups of skin-piercing components corresponding to the protective component are symmetrically arranged on the needle head seat 1;

[0035] Among them, the protective component includes an injection needle 43 and a return spring 45. The injection needle 43 is penetrated through the bottom surface of the needle head seat 1, and the return spring 45 is sleeved on the injection needle 43;

[0036] The protection component also includes a bracket 41, a fixed needle 42, a limiting ring 44 and a limiting mechanism. The bracket 41 is fixedly mounted on the inner wall of the needle seat 1, the fixed needle 42 is fixedly mounted on the inner wall of the bracket 41, and the injection needle 43 is slidably connected to the fixed needle 42, the outer wall of the injection needle 43 is in contact with the inner wall of the fixed needle 42, the limiting ring 44 is fixedly sleeved on the outer wall of the injection needle 43 located on the inner side of the needle seat 1, and the two ends of the reset spring 45 are respectively fixedly connected to the limiting ring 44 and the bracket 41, and the limiting mechanism is arranged on the inner wall of the needle seat 1;

[0037] like Figure 2 , Figure 3 As shown, the limiting mechanism includes a U-shaped spring piece 46, a limiting rod 47 and two push rods 48. The U-shaped spring piece 46 is arranged on the inner bottom surface of the needle seat 1, and one end of the U-shaped spring piece 46 away from the limiting ring 44 is fixedly connected to the inner bottom surface of the needle seat 1. The limiting rod 47 is fixedly installed on the top surface of the movable end of the U-shaped spring piece 46. The outer wall of the limiting ring 44 is provided with a limiting groove corresponding to the limiting rod 47. The two push rods 48 are symmetrically fixedly installed on the movable end of the U-shaped spring piece 46.

[0038] After the insulin injection is completed, the push rod 48 can be squeezed under the action of the skin-peeling component, thereby driving the movable end of the U-shaped spring 46 to move, so that the limiting rod 47 moves out of the limiting groove on the outer wall of the limiting ring 44, and the limiting of the limiting ring 44 is released. At this time, under the pulling action of the reset spring 45, the limiting ring 44 and the injection needle 43 can slide in the direction of entering the fixed needle 42, so that the injection needle 43 can move to the inner side of the needle seat 1 to avoid being exposed to the outside and posing a safety hazard.

[0039] like Figure 4 , Figure 5 As shown, the skin peeling assembly includes a slot 51, a shaft 52, a connecting plate 53, a lap plate 54, a supporting spring 55, a protective arc plate 56 and a wiper plate 57. The slot 51 is opened on the outer wall of the needle seat 1, the shaft 52 is rotatably mounted on the inner wall of the slot 51, the connecting plate 53 is fixedly sleeved on the outer wall of the shaft 52, and the end of the push rod 48 away from the U-shaped spring 46 passes through the outer wall of the needle seat 1 and is located on the inner side of the slot 51, and the end of the push rod 48 is opposite to the connecting plate 53, and the lap plate 54 is fixedly mounted on the top of the connecting plate 53, the lap plate 54 is inclined relative to the connecting plate 53, the supporting spring sheet 55 is fixedly mounted between the inner wall of the slot 51 and the side of the lap plate 54, the protective arc plate 56 is fixedly mounted on the bottom end of the connecting plate 53, the wiper plate 57 is fixedly mounted on the bottom end of the protective arc plate 56, the protective arc plate 56 and the wiper plate 57 are located on the outside of the injection needle 43, and the inner wall of the protective shell 2 is symmetrically provided with two make-way grooves 8 corresponding to the lap plate 54;

[0040] The user can press the insulin injection pen with the wiping plate 57 in contact with the skin vertically. In the initial state, under the support of the supporting elastic piece 55, the connecting plates 53, the protective arc plates 56 and the wiping plate 57 on both sides are in an outward inclined state. When pressing the insulin injection pen, the wiping plates 57 on both sides can move away from each other and drive the protective arc plates 56, the connecting plates 53 and the overlapping plate 54 on both sides to rotate through the shaft rod 52, so that the protective arc plates 56 on both sides can gradually open to expose the injection needle 43. As the insulin injection pen is continuously pressed, the injection needle 43 can be inserted into the user's skin to inject insulin. Under the action of pressure, when the protective arc plates 56, the connecting plates 53 and the overlapping plate 54 rotate, they can squeeze the supporting elastic piece 55, so that the supporting elastic piece 55 has a certain elastic force; after the injection is completed, the user can take out the injection needle 43 from the skin. During the taking-out process, the supporting elastic piece 55 can be reset and drive the overlapping plate 54, the connecting plate 53 and the protective arc plate 56 to be reset, so that the two protective arc plates 56 are reset to the initial position outside the injection needle 43.

[0041] As Figure 6 shown, a plurality of positioning grooves 562 are formed on the side surface of one of the two protective arc plates 56, and a plurality of positioning rods 561 corresponding to the positioning grooves 562 are fixedly installed on the side surface of the other protective arc plate 56;

[0042] The user can press the two protective arc plates 56 to make the two protective arc plates 56 rotate towards each other. At this time, the positioning rod 561 can be inserted into the positioning groove 562. The two are in interference connection. Therefore, after the positioning rod 561 is inserted into the positioning groove 562, it can limit the two protective arc plates 56, so that the two protective arc plates 56 are in a fitting state.

[0043] As Figure 5 、 Figure 7 shown, cotton plates 6 are arranged on the bottom surfaces of the two wiping plates 57, a thin film 7 is fixedly installed on the bottom inner wall of the protective shell 2, and medical alcohol is filled between the thin film 7 and the protective shell 2;

[0044] The user can fix the needle head seat 1 and slightly press the protective shell 2, so that the protective shell 2 moves along the direction of taking out the needle head seat 1. Then, under the action of pressure, the thin film 7 can be squeezed and broken by the wiping plate 57. The medical alcohol between the thin film 7 and the protective shell 2 can wet the cotton plate 6 on the bottom surface of the wiping plate 57. Then, take out the needle head seat 1 from the protective shell 2 and connect it to the insulin injection pen through the fixing needle 42; when using the insulin injection pen to inject insulin, first the user needs to select the skin area for injection, and then contact the cotton plate 6 on the bottom surface of the wiping plate 57 with the skin and wipe it, so that the skin of the injection area of the user can be disinfected by the medical alcohol immersed in the cotton plate 6.

[0045] When the technical solution provided by the present invention is in use, first, the user can tear off the sealing sticker 3 along the opening end of the protective shell 2. Subsequently, the user can fix the needle head seat 1 and slightly press the protective shell 2, so that the protective shell 2 moves along the direction in which the needle head seat 1 is taken out. Then, under the action of pressure, the film 7 can be squeezed and broken by the wiping plate 57. The medical alcohol between the film 7 and the protective shell 2 can wet the cotton plate 6 on the bottom surface of the wiping plate 57. Then, the needle head seat 1 is taken out of the protective shell 2 and connected to the insulin injection pen through the fixing needle 42;

[0046] When using an insulin injection pen to inject insulin, first, the user needs to select the skin area for injection. Then, the cotton plate 6 on the bottom surface of the wiping plate 57 is brought into contact with the skin for wiping, so that the skin of the injection area of the user can be disinfected by the medical alcohol immersed in the cotton plate 6. Subsequently, the user can press the insulin injection pen with the wiping plate 57 perpendicular to the skin and in contact with the skin. In the initial state, under the supporting action of the supporting elastic piece 55, the connecting plates 53, the protective arc plates 56 and the wiping plates 57 on both sides are all in an outward inclined state. When pressing the insulin injection pen, the wiping plates 57 on both sides can move away from each other and drive the protective arc plates 56, the connecting plates 53 and the overlapping plate 54 on both sides to rotate through the shaft rod 52, so that the protective arc plates 56 on both sides can gradually open to expose the injection needle 43. During the movement of the two wiping plates 57, since the wiping plates 57 are in contact with the user's skin, the injection skin area can be tightened, so as to facilitate the subsequent insertion of the injection needle 43. As the insulin injection pen is continuously pressed, the injection needle 43 can be inserted into the user's skin and insulin can be injected. Under the action of pressure, when the protective arc plate 56, the connecting plate 53 and the overlapping plate 54 rotate, they can squeeze the supporting elastic piece 55, so that the supporting elastic piece 55 has a certain elastic force;

[0047] After the injection is completed, the user can remove the injection needle 43 from the skin. During the removal process, the supporting elastic piece 55 can be reset and drive the overlapping plate 54, the connecting plate 53 and the protective arc plate 56 to be reset, so that the two protective arc plates 56 are reset to the initial position outside the injection needle 43. Subsequently, the user can press the two protective arc plates 56 to make the two protective arc plates 56 rotate in the direction of approaching each other. At this time, the positioning rod 561 can be inserted into the positioning groove 562, and the two are in interference connection. Therefore, after the positioning rod 561 is inserted into the positioning groove 562, the two protective arc plates 56 can be limited, so that the two protective arc plates 56 are in a fitting state. In this state, the connecting plate 53 can squeeze the ejector rod 48, thereby driving the movable end of the U-shaped elastic piece 46 to move, so that the limiting rod 47 moves out of the limiting groove on the outer wall of the limiting ring 44, releasing the limit on the limiting ring 44. At this time, under the pulling action of the return spring 45, the limiting ring 44 and the injection needle 43 can slide in the direction of entering the fixed needle 42, so that the injection needle 43 can move to the inside of the needle head seat 1, avoiding potential safety hazards due to being exposed outside.

[0048] Those of ordinary skill in the art should understand that the discussion of any embodiment above is only exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0049] Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A protective insulin injection needle, comprising a needle seat (1), a protective shell (2) is arranged outside the needle seat (1), and a sealing sticker (3) is arranged at the open end of the protective shell (2), characterized in that: The needle seat (1) is provided with a protection component, and the needle seat (1) is symmetrically provided with two groups of skin-peeling components corresponding to the protection component; The protection component comprises an injection needle (43) and a return spring (45); the injection needle (43) is arranged to penetrate the bottom surface of the needle seat (1); and the return spring (45) is sleeved on the injection needle (43).

2. A protective insulin injection needle according to claim 1, characterized in that: The protection component also includes a bracket (41), a fixed needle (42), a limiting ring (44) and a limiting mechanism, wherein the bracket (41) is fixedly mounted on the inner wall of the needle seat (1), the fixed needle (42) is fixedly mounted on the inner wall of the bracket (41), and the injection needle (43) is slidably connected to the fixed needle (42), the limiting ring (44) is fixedly sleeved on the outer wall of the injection needle (43) located on the inner side of the needle seat (1), and the two ends of the reset spring (45) are respectively fixedly connected to the limiting ring (44) and the bracket (41), and the limiting mechanism is arranged on the inner wall of the needle seat (1).

3. A protective insulin injection needle according to claim 2, characterized in that: The limiting mechanism comprises a U-shaped spring piece (46), a limiting rod (47) and two push rods (48); the U-shaped spring piece (46) is arranged on the inner bottom surface of the needle seat (1), and one end of the U-shaped spring piece (46) away from the limiting ring (44) is fixedly connected to the inner bottom surface of the needle seat (1); the limiting rod (47) is fixedly installed on the top surface of the movable end of the U-shaped spring piece (46); and the two push rods (48) are symmetrically fixedly installed on the movable end of the U-shaped spring piece (46).

4. A protective insulin injection needle according to claim 3, characterized in that: The outer wall of the limiting ring (44) is provided with a limiting groove corresponding to the limiting rod (47), and the outer wall of the injection needle (43) is in contact with the inner wall of the fixing needle (42).

5. A protective insulin injection needle according to claim 3, characterized in that: The skin peeling assembly comprises a slot (51), an axle (52), a connecting plate (53), a lap plate (54), a supporting spring sheet (55), a protective arc plate (56) and a wiping plate (57), wherein the slot (51) is formed on the outer wall of the needle seat (1), the axle (52) is rotatably mounted on the inner wall of the slot (51), the connecting plate (53) is fixedly sleeved on the outer wall of the axle (52), the lap plate (54) is fixedly mounted on the top of the connecting plate (53), the supporting spring sheet (55) is fixedly mounted between the inner wall of the slot (51) and the side surface of the lap plate (54), the protective arc plate (56) is fixedly mounted on the bottom end of the connecting plate (53), and the wiping plate (57) is fixedly mounted on the bottom end of the protective arc plate (56).

6. A protective insulin injection needle according to claim 5, characterized in that: One end of the push rod (48) away from the U-shaped spring sheet (46) passes through the outer wall of the needle seat (1) and is located inside the slot (51), and the end of the push rod (48) is opposite to the connecting plate (53).

7. A protective insulin injection needle according to claim 5, characterized in that: The arc protection plate (56) and the wiper plate (57) are located outside the injection needle (43), and the lap plate (54) is arranged obliquely relative to the connecting plate (53).

8. The protective insulin injection needle according to claim 5, characterized in that: A plurality of positioning grooves (562) are provided on the side of one of the two arc protection plates (56), and a plurality of positioning rods (561) corresponding to the positioning grooves (562) are fixedly mounted on the side of the other arc protection plate (56).

9. The protective insulin injection needle according to claim 5, characterized in that: The bottom surfaces of the two wiping plates (57) are both provided with cotton plates (6), a film (7) is fixedly mounted on the bottom inner wall of the protective shell (2), and medical alcohol is filled between the film (7) and the protective shell (2).

10. The protective insulin injection needle according to claim 5, characterized in that: The inner wall of the protective shell (2) is symmetrically provided with two clearance grooves (8) corresponding to the lap plates (54).

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