Safety protection structure for bottle inserting end of insulin pen needle body
By designing a safety protection structure for the insulin pen needle body insertion bottle end with a limiting part and a slide chute, the problem of the traditional insulin pen needle body insertion bottle end is easily exposed, achieving the effect of improving safety and reducing processing costs.
Patent Information
- Application Number
- CN202322868104.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-25
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2033-10-25
AI Technical Summary
The needle insertion end of the traditional insulin pen is easily damaged by accident. When the existing safety protection structure is used to process or transport the abandoned needle, the guide column may move into the sliding groove, causing the tail seal to slide, which will cause the needle body to The end of the bottle is exposed, and there is a risk of stabbing.
A safety protection structure for the insulin pen needle body insertion end is designed, including a needle holder, needle body and tail seal. The tail seal is provided with a receiving channel, and the needle body is fixed to the center of the needle seat in the axial direction. The needle holder is provided with a first slide groove and a second slide groove, and the guide column slides along these slide grooves, and the limiting member extends out when the guide column abuts on the bottom end of the second slide groove, preventing the tail seal from sliding upward. Prevent the needle insertion end of the bottle exposure.
It effectively prevents the bottle end of the needle body from being exposed, reduces the risk of stabbing people, and has a simple structural design and reduced processing costs, making it suitable for automated processing and assembly.
Smart Images
Figure CN222467745U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of insulin pens, in particular to a safety protection structure for the end of an insulin pen needle body inserted into a bottle. Background Art
[0002] Insulin pens are common insulin injection devices that are often used by diabetic patients to inject a fixed amount of insulin to control their blood sugar.
[0003] A conventional common injection needle includes a needle holder, a needle body and a protective shell. The needle body is fixed to the needle holder. One end of the needle body is exposed from the needle holder to pierce the human body for injection. The other end of the needle body is located in the needle holder to pierce the medicine bottle when the insulin pen is connected to the needle holder, thereby introducing the liquid medicine into the human body. Some injection needles are provided with additional components to reduce the danger caused by the exposure of the needle tip. However, the mounting hole on the bottle insertion side of the needle holder (i.e. the side connected to the insulin pen) has a large diameter, and the bottle insertion end of the needle body is easily touched by a person by mistake and stabbed.
[0004] In order to solve the problem that the bottle insertion end is easy to injure people, some injection needles are equipped with tail seals, sliding grooves are arranged around the needle seat, and guide posts are arranged around the tail seal. The tail seal is slidably arranged in the needle seat, and the needle body passes through the tail seal. The guide post is inserted in the sliding groove and can slide under the limit position of the sliding groove. The bottom of the sliding groove is perpendicular to the sliding groove and has a limit groove. During injection, the tail seal slides toward the bottom of the needle seat under the pressure of the insulin pen, so that the bottle insertion end of the needle body is exposed on the lower side of the tail seal to pierce the medicine bottle; after the injection is completed, the tail seal can slide in the opposite direction, and the bottle insertion end of the needle body is accommodated in the tail seal. At this time, the tail seal is rotated so that the guide post is stuck in the limit groove to limit the tail seal and prevent the bottle insertion end of the needle body from being exposed again.
[0005] In the above-mentioned safety protection structure, since the limit groove and the sliding groove are connected, when handling or transporting discarded needles, the guide column has a probability of moving into the sliding groove, so that the tail seal may slide relative to the needle seat and the bottle insertion end of the needle body is exposed, posing a risk of injuring people. Summary of the invention
[0006] The utility model aims to provide a safety protection structure for the end of an insulin pen needle body inserted into a bottle, which has the advantages of preventing the needle body inserted into the bottle from being exposed and stabbing people and having good safety.
[0007] The above technical objectives of the utility model are achieved through the following technical solutions:
[0008] The utility model provides a safety protection structure for the bottle insertion end of an insulin pen needle body, the safety protection structure comprises a needle seat, a needle body and a tail seal, the tail seal is arranged in the needle seat, the tail seal is provided with a receiving channel for receiving the needle body, the needle body is axially fixed on the central axis of the needle seat; the tail seal can slide axially along the needle seat so that the bottle insertion end of the needle body is exposed from the receiving channel;
[0009] The needle seat is provided with a first slide groove and a second slide groove, the first slide groove and the second slide groove both extend along the axial direction of the needle seat, and the upper end of the first slide groove is connected with the upper end of the second slide groove;
[0010] A guide column is arranged on the peripheral side of the tail seal, and the guide column can slide along the first slide groove or the second slide groove; a limiting component is arranged on the tail seal; the inner wall of the needle seat has a limiting portion, and when the guide column abuts against the lower end groove wall of the second slide groove, the limiting component can extend radially outward along the tail seal and be blocked below the limiting portion.
[0011] Further, the needle seat includes an upper chamber and a lower chamber that are connected to each other, the first slide groove and the second slide groove are arranged on the peripheral side of the upper chamber, a step is formed at the connection between the upper chamber and the lower chamber, and the limiting portion is the step.
[0012] Furthermore, the inner wall of the lower chamber is provided with an internal thread for connecting an insulin pen, and the first slide groove is located along the screwing direction of the second slide groove along the internal thread.
[0013] Furthermore, a transition port is formed at the connection point between the upper chamber and the lower chamber, and a guide groove is provided on the side wall of the transition port, and the guide groove is inclined downward in a direction away from the center of the transition port; when the guide column abuts against the lower end of the first slide groove, the limit member is opposite to the opening of the guide groove; the tail seal can drive the limit member to slide into the guide groove.
[0014] Furthermore, the limiting member is a long elastic clip, and a receiving groove adapted to the limiting member is arranged on the circumference of the tail seal, the lower end of the limiting member is connected to the lower side of the receiving groove, and the upper end of the limiting member is exposed outside the receiving groove; there is a gap between the limiting member and the receiving groove for making way for the deformation of the limiting member.
[0015] Furthermore, the upper portion of the first slide groove is inclined obliquely upward toward the second slide groove.
[0016] Furthermore, the second slide groove extends in a straight line direction parallel to the needle body; the lower part of the first slide groove is arranged parallel to the second slide groove, and the upper part of the first slide groove is obliquely connected to the upper part of the second slide groove.
[0017] Furthermore, two guide posts are arranged back to back on the circumferential side of the tail seal, and the two guide posts are located on the same straight line passing through the center of the tail seal; two first slide grooves and two second slide grooves are each arranged, and along the circumference of the needle seat, the two first slide grooves are 180° apart, and the two second slide grooves are 180° apart.
[0018] Furthermore, a flange is provided at the lower end of the tail seal member protruding outward in the radial direction, and the flange can abut against the step to limit the tail seal member.
[0019] Furthermore, the safety protection structure also includes a return spring, wherein the return spring abuts between the needle seat and the tail seal, and the return spring is used to provide a downward force for the tail seal.
[0020] In summary, the utility model has the following beneficial effects:
[0021] The utility model provides a safety protection structure for the bottle-insertion end of the insulin pen needle body. During injection, the tail seal slides upward along the axial direction of the needle seat, the guide column slides along the first slide groove, and the bottle-insertion end of the needle body is exposed at the lower end of the receiving channel; after the injection is completed, the guide column slides along the second slide groove, the tail seal slides downward, and the bottle-insertion end of the needle body is gradually received in the receiving channel. The limiting member is received in the receiving groove; when the bottle-insertion end of the needle body is completely received in the receiving channel, the guide column moves to the bottom end of the second slide groove, at which time the limiting member pops out of the receiving groove and abuts against the limiting part of the needle seat to prevent the tail seal from sliding upward and causing the bottle-insertion end of the needle body to expose the tail seal. The limiting strength is reliable, and the first slide groove and the second slide groove do not need to be processed with a slot for the guide column to be positioned, so the processing cost is reduced, the processing difficulty is reduced, and it is convenient for automated processing and assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a three-dimensional structural schematic diagram of the initial safety protection structure of an embodiment of the utility model.
[0023] Figure 2 It is a schematic diagram of the vertical cross-sectional structure of the initial safety protection structure of an embodiment of the utility model.
[0024] Figure 3 It is a schematic diagram of the exploded structure of the needle seat, the return spring and the tail seal of one embodiment of the utility model.
[0025] Figure 4 It is a three-dimensional structural schematic diagram of a tail seal according to an embodiment of the utility model.
[0026] Figure 5 It is a three-dimensional structural schematic diagram of the safety protection structure after the injection is completed in one embodiment of the utility model.
[0027] In the figure:
[0028] 1000, safety protection structure; 100, needle seat; 110, upper chamber; 111, needle hole channel; 112, first slide groove; 113, second slide groove; 114, partition; 120, lower chamber; 121, connecting port; 122, internal thread; 130, transition port; 140, limiting portion; 150, guide groove; 200, needle body; 300, tail seal; 310, guide column; 320, accommodating groove; 330, limiting member; 340, accommodating channel; 350, flange; 400, return spring. DETAILED DESCRIPTION
[0029] The utility model is further described below in conjunction with the accompanying drawings.
[0030] This embodiment discloses a safety protection structure 1000 for the end of the insulin pen needle body inserted into the bottle, referring to Figures 1 to 3 The safety protection structure 1000 includes a needle seat 100, a needle body 200, a tail seal 300 and a return spring 400. The needle seat 100 is used to connect the insulin pen and accommodate the needle body 200, and the lower end of the needle seat 100 is provided with a connection port 121 for connecting the insulin pen. The tail seal 300 is slidably arranged in the needle seat 100 along the axial direction of the needle seat 100. The needle body 200 is axially fixed on the central axis of the needle seat 100. The middle part of the tail seal 300 is axially provided with a receiving channel 340, and the bottle insertion end of the needle body 200 is accommodated in the receiving channel 340. When the tail seal 300 slides in a direction away from the connection port 121, the bottle insertion end of the needle body 200 is displaced relative to the receiving channel 340, so that the bottle insertion end of the needle body 200 is exposed outside the receiving channel 340 to puncture the medicine bottle. The return spring 400 abuts between the needle seat 100 and the tail seal 300. The elastic force of the return spring 400 acts on the tail seal 300, so that the tail seal 300 has a tendency to move downward.
[0031] It should be noted that the "up" referred to in this embodiment refers to the movement direction in which the tail seal 300 slides to expose the bottle insertion end of the needle body 200 in the accommodating channel 340, that is, the X direction in the figure; "down" refers to the movement direction in which the tail seal 300 slides to allow the bottle insertion end of the needle body 200 to be accommodated in the accommodating channel 340, that is, the Y direction in the figure.
[0032] Reference Figures 1 to 3The needle seat 100 includes an upper chamber 110 and a lower chamber 120 that are connected to each other. The upper chamber 110 and the lower chamber 120 are both cylindrical components. The lower side opening of the lower chamber 120 forms the connection port 121, and the upper side of the lower chamber 120 has a bottom wall. The diameter of the upper chamber 110 is smaller than the diameter of the lower chamber 120, and the upper chamber 110 is coaxially connected to the upper side of the lower chamber 120 and extends in a direction away from the connection port 121.
[0033] The upper side of the lower chamber 120 is provided with a transition port 130 connected to the upper chamber 110. The side of the upper chamber 110 away from the transition port 130 is provided with a needle hole channel 111, and the needle body 200 is fixed in the needle hole channel 111. The upper end of the tail seal 300 passes through the transition port 130 and can slide axially along the upper chamber 110.
[0034] The upper chamber 110 of the needle seat 100 is provided with a first slide groove 112 and a second slide groove 113 on the circumferential side. The first slide groove 112 and the second slide groove 113 both extend in a direction away from the connection port 121, the upper end of the first slide groove 112 is connected to the upper end of the second slide groove 113, and a partition 114 is provided between the lower end of the first slide groove 112 and the lower end of the second slide groove 113, and the partition 114 separates the lower end of the first slide groove 112 from the lower end of the second slide groove 113.
[0035] A guide post 310 is provided on the peripheral side of the tail seal 300 protruding radially outward, and the guide post 310 is inserted into the first slide groove 112. When the needle seat 100 is connected to the insulin pen, the end of the insulin pen squeezes the tail seal 300, so that the tail seal 300 slides upward along the axial direction of the upper chamber 110 of the needle seat 100, and at this time, the guide post 310 moves up along the first slide groove 112 to the upper end of the first slide groove 112 under the guide limit of the first slide groove 112. When the injection is completed, the insulin pen is removed from the needle seat 100, and the tail seal 300 slides downward along the axial direction of the upper chamber 110 under the elastic force of the return spring 400, and the guide post 310 slides down to the lower end of the second slide groove 113 under the guide limit of the second slide groove 113. The guide post 310 is always limited in the first slide groove 112 or the second slide groove 113 , so that the tail seal 300 is not easy to fall out of the needle seat 100 , and the bottle insertion end of the needle body 200 is prevented from being exposed outside the accommodating channel 340 .
[0036] In this embodiment, the upper portion of the first slide groove 112 is inclined obliquely upward toward the second slide groove 113 , so that when the guide column 310 slides along the first slide groove 112 , it can automatically move to the upper end of the second slide groove 113 under the guidance of the first slide groove 112 .
[0037] The lower part of the first slide groove 112 is arranged parallel to the second slide groove 113, the upper part of the first slide groove 112 is obliquely connected to the upper part of the second slide groove 113, and the second slide groove 113 extends in a straight line direction parallel to the needle body 200. This arrangement makes the structure of the first slide groove 112 and the second slide groove 113 simpler, convenient to manufacture, and reduces the cost, thereby facilitating the processing of the first slide groove 112 and the second slide groove 113 and the assembly of the safety protection structure 1000.
[0038] Reference Figures 2 to 4 In this embodiment, two guide posts 310 are arranged on the side of the tail seal 300 in opposite directions. The two guide posts 310 are located on the same straight line passing through the center of the tail seal 300 (that is, the two guide posts 310 are located on the same diameter of the tail seal 300). Two first slide grooves 112 and two second slide grooves 113 are provided, and along the circumference of the needle seat 100, the two first slide grooves 112 are 180° apart, and the two second slide grooves 113 are 180° apart, that is, one of the first slide grooves 112 and one of the second slide grooves 113 are located on one side of the upper chamber 110, and the other first slide groove 112 and the other second slide groove 113 are located on the opposite side of the upper chamber 110. The two guide posts 310 are respectively inserted into the two opposite first slide grooves 112. This makes the tail seal 300 and the upper chamber 110 more compact, and the tail seal 300 is more stable when sliding along the upper chamber.
[0039] The tail seal 300 is provided with a receiving groove 320 on the circumferential side. A limiting member 330 is provided in the receiving groove 320, and the limiting member 330 can be accommodated in the receiving groove 320. The inner wall of the needle seat 100 has a limiting portion 140, and the limiting portion 140 is located outside the tail seal 300. When the guide post 310 slides along the first slide groove 112 and the second slide groove 113, the limiting member 330 can be accommodated in the receiving groove 320, so that the tail seal 300 can slide smoothly along the upper chamber 110. When the guide post 310 abuts against the lower end groove wall of the second slide groove 113, the limiting member 330 extends out of the receiving groove 320, and the limiting portion 140 blocks the upper part of the limiting member 330.
[0040] In this embodiment, a step around the transition opening 130 is formed at the connection between the upper chamber 110 and the lower chamber 120, and the stopper 140 is the step. When the guide column 310 abuts against the lower end groove wall of the second slide groove 113, the stopper 330 is located below the transition opening 130, and the receiving groove 320 is staggered from the inner wall of the upper chamber 110, so that the stopper 330 can extend from the receiving groove 320 and abut against the stopper 140. Therefore, after the bottle insertion end of the needle body 200 is accommodated in the receiving channel 340, under the cooperation of the stopper 140 and the stopper 330, the tail seal 300 cannot slide upward, thereby making it difficult for the bottle insertion end of the needle body 200 to be exposed outside the receiving channel 340, reducing the risk of stabbing people.
[0041] In this embodiment, the stopper 330 is a long strip elastic foot, and the receiving groove 320 is a long strip groove adapted to the stopper 330. The lower end of the stopper 330 is connected to the lower side of the receiving groove 320, and the upper end of the stopper 330 is tilted outward along the radial direction of the tail seal 300 to be exposed outside the receiving groove 320. There is a gap between the stopper 330 and the receiving groove 320 for the stopper 330 to deform and make way. Therefore, when the guide column 310 slides along the first slide groove 112 or the second slide groove 113, the stopper 330 is squeezed and deformed by the inner wall of the upper chamber 110 and is accommodated in the receiving groove 320. When the guide column 310 abuts against the bottom end of the second slide groove 113, the stopper 330 is separated from the upper chamber 110 and rebounds and resets under the action of its own elastic force, and the upper end of the stopper 330 is blocked by the stopper 140.
[0042] In addition, in other embodiments, the limit member 330 may also be a spring pin slidably arranged along the accommodating groove 320. When the guide column 310 abuts against the bottom end of the second sliding groove 113, the spring pin pops out from the accommodating groove 320 and blocks under the limit portion 140, thereby making it difficult for the tail seal 300 to slide upward again.
[0043] In this embodiment, two stoppers 330 are provided on the circumferential side of the tail seal 300, and the two stoppers 330 are 180° apart along the circumferential direction of the tail seal 300. One accommodating groove 320 is provided on the tail seal 300, and the accommodating groove 320 penetrates both sides of the tail seal 300 along the radial direction of the tail seal 300, so as to install and accommodate the stoppers 330 on both sides of the tail seal 300.
[0044] Reference Figures 1 to 5 In this embodiment, the lower end of the first slide groove 112 is flush with the lower end of the second slide groove 113, so that the tail seal 300 is located at the same position of the needle seat 100 before and after injection. The side wall of the transition port 130 is provided with a guide groove 150, and the bottom wall of the guide groove 150 is inclined downward in a direction away from the center of the transition port 130. When the guide column 310 abuts against the lower end of the first slide groove 112, the stopper 330 is aligned with the opening of the guide groove 150, and the tail seal 300 can drive the stopper 330 to slide into the guide groove 150 when sliding upward. When the guide post 310 moves into the second slide groove 113, the tail seal 300 rotates a certain angle, and the limit member 330 is staggered from the guide groove 150; thus, when the guide post 310 moves to the bottom end of the second slide groove 113, the limit member 330 leaves the upper chamber 110 and is blocked by the blocking portion. Since the limit member 330 is staggered from the guide groove 150 at this time, even if the tail seal 300 is squeezed upward, the limit member 330 cannot enter the upper chamber 110 again.
[0045] The partition 114 between the first slide groove 112 and the second slide groove 113 separates the bottom ends of the first slide groove 112 and the second slide groove 113, so that the guide column 310 cannot rotate to the bottom end of the first slide groove 112 when it is located at the bottom end of the second slide groove 113, further preventing the limit member 330 from entering the upper chamber 110 through the guide groove 150 again.
[0046] In this embodiment, two guide grooves 150 are provided along a diameter of the transition opening 130 to allow two stoppers 330 to slide into the upper chamber 110 .
[0047] The inner wall of the lower chamber 120 is provided with an internal thread 122 for connecting an insulin pen. The first slide groove 112 is located in the screwing direction of the second slide groove 113 along the internal thread 122 .
[0048] Specifically, in the present embodiment, the internal thread 122 is a counterclockwise thread, that is, the insulin pen rotates counterclockwise relative to the needle holder 100 to be screwed and connected to the lower chamber 120. In the circumference of the upper chamber 110, the second chute 113 and the first chute 112 are sequentially arranged in the counterclockwise direction. Thus, after the injection is completed, in the process of rotating the insulin pen clockwise to remove the insulin pen, the tail seal 300 has a tendency to rotate in the clockwise direction under the friction of the insulin pen, so that the guide post 310 is close to the second chute 113 and is away from the side groove wall of the first chute 112. In the process of the needle body 200 retracting the needle holder 100, the guide post 310 is not easy to move to the first chute 112, ensuring that the bottle insertion end of the needle body 200 is retracted in the accommodating channel 340 and the rear limiter 330 can lock the tail seal 300.
[0049] The lower end of the tail seal 300 is provided with a flange 350 protruding outward in the radial direction. In the radial direction of the tail seal 300, the widest part of the flange 350 is larger than the diameter of the transition port 130. Therefore, when the tail seal 300 moves upward, the flange 350 can abut against the step at the connection between the upper chamber 110 and the lower chamber 120 to limit the tail seal 300.
[0050] The principle of the safety protection structure 1000 of the insulin pen needle body of the utility model is:
[0051] When using the insulin pen for injection, the insulin pen is screwed to the needle seat 100, and the insulin pen squeezes the tail seal 300 so that the bottle insertion end of the needle body 200 extends out of the receiving channel 340, the guide column 310 slides along the first slide groove 112, and the stopper 330 is accommodated in the receiving groove 320; after the injection is completed, the bottle insertion end of the needle body 200 is accommodated in the receiving channel 340, and the return spring 400 drives the tail seal 300 to move downward, and the guide column 310 slides along the second slide groove 113. When the bottle insertion end of the needle body 200 is completely received in the receiving channel 340, the guide column 310 moves to the bottom end of the second slide groove 113, and the stopper 330 pops out from the receiving groove 320 and abuts against the stopper 140 of the needle seat 100, so as to prevent the tail seal 300 from sliding in the direction away from the connecting port 121 and causing the bottle insertion end of the needle body 200 to be exposed.
[0052] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A safety protection structure for the end of an insulin pen needle body inserted into a bottle, characterized in that: The safety protection structure (1000) comprises a needle seat (100), a needle body (200) and a tail seal (300); the tail seal (300) is arranged in the needle seat (100); the tail seal (300) is provided with a receiving channel (340) for receiving the needle body (200); the needle body (200) is axially fixed on the central axis of the needle seat (100); the tail seal (300) can slide axially along the needle seat (100) so that the bottle insertion end of the needle body (200) is exposed in the receiving channel (340); The needle seat (100) is provided with a first slide groove (112) and a second slide groove (113), the first slide groove (112) and the second slide groove (113) both extend axially along the needle seat (100), and the upper end of the first slide groove (112) is connected to the upper end of the second slide groove (113); a guide column (310) is provided on the peripheral side of the tail seal (300), and the guide column (310) can slide along the first slide groove (112) or the second slide groove (113); a limiting member (330) is provided on the tail seal (300); the inner wall of the needle seat (100) has a limiting portion (140), when the guide column (310) abuts against the lower end groove wall of the second slide groove (113), the limiting member (330) can extend radially outward along the tail seal (300) and block below the limiting portion (140).
2. A safety protection structure for the end of the insulin pen needle body inserted into the bottle according to claim 1, characterized in that: The needle seat (100) includes an upper chamber (110) and a lower chamber (120) which are connected to each other, the first slide groove (112) and the second slide groove (113) are arranged on the peripheral side of the upper chamber (110), and a step is formed at the connection between the upper chamber (110) and the lower chamber (120), and the limiting portion (140) is the step.
3. A safety protection structure for the insulin pen needle bottle insertion end according to claim 2, characterized in that: The inner wall of the lower chamber (120) is provided with an internal thread (122) for connecting an insulin pen, and the first slide groove (112) is located in the screwing direction of the second slide groove (113) along the internal thread (122).
4. A safety protection structure for the insulin pen needle bottle insertion end according to claim 2, characterized in that: A transition opening (130) is formed at the connection point between the upper chamber (110) and the lower chamber (120), and a guide groove (150) is provided on the side wall of the transition opening (130), and the guide groove (150) is inclined downward in a direction away from the center of the transition opening (130); when the guide column (310) abuts against the lower end of the first slide groove (112), the limit member (330) is directly opposite to the opening of the guide groove (150); the tail seal (300) can drive the limit member (330) to slide into the guide groove (150).
5. The safety protection structure for the insulin pen needle bottle insertion end according to claim 1, characterized in that: The limiting member (330) is a long elastic clamping foot, and a receiving groove (320) adapted to the limiting member (330) is arranged on the circumference of the tail sealing member (300), the lower end of the limiting member (330) is connected to the lower side of the receiving groove (320), and the upper end of the limiting member (330) is exposed outside the receiving groove (320); and there is a gap between the limiting member (330) and the receiving groove (320) for making way for the limiting member (330) to deform.
6. A safety protection structure for the insertion end of an insulin pen needle according to claim 1, characterized in that: The upper portion of the first slide groove (112) is inclined obliquely upward toward the second slide groove (113).
7. A safety protection structure for the insulin pen needle bottle insertion end according to claim 1, characterized in that: The second slide groove (113) extends in a straight line direction parallel to the needle body (200); the lower part of the first slide groove (112) is arranged parallel to the second slide groove (113), and the upper part of the first slide groove (112) is obliquely connected to the upper part of the second slide groove (113).
8. The safety protection structure for the insulin pen needle bottle insertion end according to claim 1, characterized in that: Two guide posts (310) are disposed on the circumferential side of the tail seal (300) and are located in opposite directions. The two guide posts (310) are located on the same straight line passing through the center of the tail seal (300). Two first slide grooves (112) and two second slide grooves (113) are disposed. Along the circumferential direction of the needle seat (100), the two first slide grooves (112) are 180° apart, and the two second slide grooves (113) are 180° apart.
9. A safety protection structure for the end of the insulin pen needle body inserted into the bottle according to claim 2, characterized in that: A flange (350) is provided at the lower end of the tail seal (300) in a radially outward direction, and the flange (350) can abut against the step to limit the position of the tail seal (300).
10. The safety protection structure for the insulin pen needle bottle insertion end according to claim 1, characterized in that: The safety protection structure (1000) further comprises a return spring (400), wherein the return spring (400) is abutted between the needle seat (100) and the tail seal (300), and the return spring (400) is used to provide a downward force for the tail seal (300).