Insulin pen needle and insulin pen

Abstract

The utility model relates to the technical field of medical instruments, in particular to an insulin pen needle head and an insulin pen, the insulin pen needle head comprises a needle head, a barrier strip and a barrier strip base, the barrier strip base is annular, the needle head penetrates through the center of the annular barrier strip base, the barrier strip is matched with the outer needle head, the barrier strip is arranged on the barrier strip base, and the barrier strip base is arranged on the outer needle head. One end of the barrier strip is rotationally connected with the barrier strip base, and the rotational connection of the barrier strip base and the barrier strip provides rotational power through the torsional spring; the protective end cover comprises a needle head hole, a connecting groove and a barrier strip groove, the needle head hole is matched with the needle head on the needle head seat, the needle head seat is further provided with a protrusion matched with the connecting groove, the protective end cover is connected with the needle head seat through matching of the connecting groove and the protrusion, and the barrier strip groove is matched with the barrier strip; through cooperation of the protective end cover and the barrier strip, after insulin injection is completed, the barrier strip can be popped out by rotating the protective end cover, the outer needle head is blocked, medical staff and patients are prevented from being stabbed by the needle head, and occupational exposure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of syringe needles, and more specifically to an insulin pen needle and an insulin pen. Background Art

[0002] Diabetes is a chronic disease usually caused by insufficient insulin secretion or impaired insulin action. Insulin is an important hormone that helps the body convert glucose in the blood into energy and control blood sugar levels. When insulin secretion is insufficient or insulin action is impaired, glucose in the blood cannot be fully utilized, resulting in elevated blood sugar levels.

[0003] Diabetes is a very common disease that affects millions of people worldwide. There are two types of diabetes: type 1 and type 2. Type 1 diabetes usually develops in children or young adults and is caused by the immune system attacking insulin-producing cells. Type 2 diabetes usually develops in adults and is mainly caused by insulin resistance.

[0004] For patients with type 1 diabetes, due to insufficient insulin secretion, they usually need to inject exogenous insulin to control blood sugar levels. Insulin injections can help patients with type 1 diabetes replace the lack of insulin and keep blood sugar within the normal range.

[0005] For patients with type 2 diabetes, blood sugar levels can usually be managed through diet control, exercise, and oral medications in the initial stage. However, as the disease progresses, some patients with type 2 diabetes may experience insufficient insulin secretion or insulin resistance. In this case, the doctor may recommend that they start insulin injections as an auxiliary treatment to achieve better blood sugar control.

[0006] Insulin pens are portable devices for injecting insulin, commonly used by diabetic patients. Insulin pens are designed to facilitate patients to inject insulin when needed to control blood sugar levels. Using insulin pens is more convenient and easier to operate than traditional syringes, so they are favored by many diabetic patients.

[0007] When disassembling the needle of an existing ordinary insulin injection pen after the injection is completed, the insulin injection pen needs to be held in the right hand, and the outer needle cap is put back on with the left hand, and the used needle is unscrewed to disassemble it. Needlestick injuries are very likely to occur in the process of putting the needle cap back on. Domestic studies have shown that the incidence of needlestick injuries among nurses has remained high. Needlestick injuries are the most common occupational injury for nursing staff and one of the most dangerous transmission routes for medical staff to develop blood-borne infectious diseases. It has been confirmed that more than 20 pathogens can be transmitted through needlestick injuries. In addition, for diabetic patients, many patients need long-term insulin injections to control blood sugar, and insulin pens are used frequently. Needlestick injuries not only endanger the occupational health of nursing staff, but also cause harm to diabetic patients who use insulin injection pens for a long time.

[0008] In view of the above-mentioned technical problems, there is an urgent need to improve the insulin pen to reduce the risk of needle sticks when handling the needle of the insulin pen after injection. Summary of the invention

[0009] The purpose of the utility model is to improve the insulin pen so that the risk of being stabbed by the needle will not occur when the insulin pen needle is disassembled, the probability of occupational exposure is reduced, and medical staff and patients are protected.

[0010] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions: an insulin pen needle, comprising

[0011] The needle seat has a circular end surface, and includes a needle, a baffle and a baffle base. The needle passes through the needle seat and is arranged at the center of the needle seat. The needle is divided into an outer needle and an inner needle. The outer needle is used to pierce human tissue, and the inner needle is used to connect with the insulin pen cartridge. The baffle base is annular. The needle passes through the center of the annular baffle base. The baffle is adapted to the outer needle. The baffle is arranged on the baffle base. One end of the baffle is rotatably connected to the baffle base. The rotational connection between the baffle base and the baffle provides rotational power through a torsion spring;

[0012] The protective end cover is adapted in shape and size to the needle seat, and includes a needle hole, a connecting groove and a baffle groove. The setting of the needle hole is adapted to the needle on the needle seat. The needle seat is also provided with a protrusion adapted to the connecting groove. The protective end cover is connected to the needle seat through the cooperation of the connecting groove and the protrusion, and the baffle groove is adapted to the baffle.

[0013] Furthermore, the blocking strip and the needle approaching surface are provided with arc-shaped surfaces adapted to the needle.

[0014] Furthermore, the number of the baffle bars is three or four.

[0015] Furthermore, the protective end cover is provided with anti-slip grooves, and the anti-slip grooves are used to increase the friction force of the protective end cover.

[0016] Furthermore, the protective end cover also includes an annular groove, which is arranged in the center of the protective end cover. The annular groove is used to fix the baffle. When the baffle pops out to surround the outer needle, the protective end cover is rotated to make the baffle rotate into the annular groove. The annular groove constrains the baffle so that it no longer rotates.

[0017] Furthermore, it also includes a needle protection sleeve, which is cylindrical and has a blind hole, and the blind hole is adapted to the outer needle.

[0018] Furthermore, it also includes an outer cap, which includes a cylindrical shell part and a truncated cone shell part, and the needle seat and the protective end cover are arranged in the outer cap.

[0019] Furthermore, the cylindrical shell opening end of the outer cap is also provided with a plastic film for easy tearing.

[0020] Furthermore, a hand-holding portion is also provided on the truncated cone-shaped shell of the outer cap.

[0021] On the other hand, an insulin pen is provided, which uses the above-mentioned insulin pen needle.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] 1. After the insulin pen needle of the present application is used, the protective end cover is rotated so that the baffle bar pops out from the rectangular groove of the protective end cover under the action of the torsion spring. Multiple baffle bars block the exposed external needle, so that medical staff will not be pricked by the needle when removing the needle, which can effectively reduce the risk of needlestick and reduce occupational exposure.

[0024] 2. The outer cap of the insulin pen needle of the present application is provided with a hand-held portion for easy pinching. After disassembling the insulin pen needle, the hand-held portion can be held, and the inner needle can be inserted into the outer cap with the outer cap. In this way, the outer needle can be blocked by the baffle and there will be no danger of needlestick. At the same time, since the inner needle is inserted into the outer cap, there will be no risk of needlestick. It is convenient to put the needle into the sharps box and then destroy it, which can also reduce the risk of needlestick. Especially for patients who use insulin pen needles at home, although the outer needle of the discarded needle is often protected by the outer cap, the inner needle often has the possibility of injuring cleaning staff. In the solution of the present application, the outer needle is blocked by a baffle and the inner needle is inserted into the outer cap, which can better prevent the needle from injuring others. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a schematic structural diagram of one embodiment of an insulin pen needle of the present application;

[0026] Figure 2 for Figure 1 A magnified image of point A;

[0027] Figure 3 This is a structural schematic diagram of one embodiment of a needle holder of an insulin pen needle of the present application;

[0028] Figure 4 A bottom view of a structural schematic diagram of one embodiment of a needle holder of an insulin pen needle of the present application;

[0029] Figure 5 This is a schematic structural diagram of one embodiment of a protective end cover for an insulin pen needle of the present application;

[0030] Figure 6 for Figure 5 Bottom view of

[0031] Markings in the figure: 1-needle seat, 2-needle, 3-protective end cover, 4-inner needle, 5-outer needle, 6-blocking bar, 7-blocking bar base, 8-blocking bar groove, 9-protrusion, 10-connecting groove, 11-needle protective sleeve, 12-outer cover cap, 13-hand holding part, 14-annular groove. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0033] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. 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.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] Embodiment 1:

[0038] See also Figures 1 to 4 As shown, an insulin pen needle comprises

[0039] The needle seat 1 has a circular end face, and includes a needle 2, a baffle 6 and a baffle base 7. The needle 2 passes through the needle seat 1 and is arranged at the center of the needle seat 1. The needle 2 is divided into an outer needle 5 and an inner needle 4. The outer needle 5 is used to pierce human tissue, and the inner needle 4 is used to connect with the refill of an insulin pen. The baffle base 7 is annular. The needle 2 passes through the center of the annular baffle base 7. The baffle 6 is adapted to the length of the outer needle 5. The baffle 6 is arranged on the baffle base 7. One end of the baffle 6 is rotatably connected to the baffle base 7. The rotational connection between the baffle base 7 and the baffle 6 provides rotational power through a torsion spring;

[0040] The protective end cover 3 is adapted in shape and size to the needle seat 1, and includes a needle hole, a connecting groove 10 and a baffle groove 8. The setting of the needle hole is adapted to the needle 2 on the needle seat 1. The needle seat 1 is also provided with a protrusion 9 adapted to the connecting groove 10. The protective end cover 3 is connected to the needle seat 1 through the cooperation of the connecting groove 10 and the protrusion 9, and the baffle groove 8 is adapted to the baffle 6.

[0041] A needle 2 is arranged at the center of the needle seat 1. The needle 2 is arranged at the center of the circular needle seat 1. The needle 2 passes through the central axis of the needle seat 1 and is divided into an inner needle 4 and an outer needle 5. The inner needle 4 is connected to the rubber plug of the refill of the insulin pen and is used to transport the insulin solution to be injected. The outer needle 5 pierces the human tissue at the site to be injected. A baffle base 7 and a baffle 6 are arranged on the needle seat 1. The baffle base 7 is connected to the needle seat 1. The baffle 6 and the baffle base 7 are rotatably connected. The baffle base 7 and A torsion spring is arranged between the baffle bars 6, so that the baffle bars 6 can not only rotate relative to the baffle bar base 7, but also the torsion spring provides a rotation force for the baffle bars 6. In the initial state, the baffle bars 6 are rectangular, the baffle bars 6 are tightly against the circular end face of the needle seat 1, and the angle between the baffle bars 6 and the end face of the needle seat 1 is 0° (or 180°); a needle hole is arranged on the protective end cover 3, and the outer needle 5 extends from the needle hole. The protective end cover 3 is also provided with a baffle bar groove 8, and the shape of the baffle bar groove 8 is The size of the shape is set according to the blocking bar 6, and the blocking bar 6 can be rotated out of the blocking bar groove 8 to extend out of the protective end cover 3. When it is rotated to the maximum angle, the blocking bar 6 is 90° with the end face of the needle seat 1. Before the needle 2 is used up, there is a certain angle between the blocking bar groove 8 on the protective end cover 3 and the blocking bar 6, and the blocking bar 6 cannot be rotated and popped out from the blocking bar groove 8. Only after the insulin is injected, the protective end cover 3 is rotated to a certain angle so that the angle between the blocking bar groove 8 and the blocking bar 6 is 0°, the blocking bar 6 is popped out under the action of the torsion spring, and the blocking bar 6 blocks the outer needle 5, so that the medical staff and the patient will not be stabbed when removing the needle; the connection between the protective end cover 3 and the needle seat 1 is achieved by the protrusion 9 on the needle seat 1 at this time and the connecting groove 10 on the protective end cover 3. The connecting groove 10 on the protective end cover 3 is set longer, so that the protective end cover 3 can be rotated at a certain angle, which makes it possible to realize the function of blocking the outer needle 5 by rotating the blocking bar 6 through the rotation of the protective end cover 3.

[0042] Furthermore, the blocking strip 6 and the needle approaching surface are provided with an arc surface adapted to the needle.

[0043] The side of the blocking strip 6 that contacts the needle is provided with an arc surface that is adapted to the shape and size of the needle, so that the blocking strip 6 can contact the outer needle 5 more closely when blocking it.

[0044] Furthermore, the number of the blocking bars 6 is three or four.

[0045] When the number of baffle bars 6 is set to three or four, it is the preferred number. When the number of baffle bars 6 is less than three, the wrapping effect on the needle is not good. When the two baffle bars 6 are wrapped under the action of lateral force, the baffle bars 6 are prone to slide. When the number of baffle bars 6 is three, the wrapping stability is higher. If the number of baffle bars 6 is too large, the size of the baffle between the two baffle bars 6 on the baffle base 7 will be too small. When installing the torsion spring and manufacturing the baffle base 7, the strength will be insufficient, and it will be difficult to manufacture and prone to damage. Therefore, three to four baffle bars 6 are the preferred number.

[0046] Furthermore, the protective end cover 3 is provided with anti-skid patterns, and the anti-skid patterns are used to increase the friction force of the protective end cover 3 .

[0047] Anti-slip grooves are provided on the protective end cover 3 to increase the friction of the protective end cover 3, so that medical staff can exert better force when removing the needle.

[0048] Furthermore, the protective end cover 3 also includes an annular groove 14, which is arranged at the center of the protective end cover 3. The annular groove 14 is used to fix the baffle 6. When the baffle 6 pops out to surround the outer needle 5, the protective end cover 3 is rotated so that the baffle 6 rotates into the annular groove 14. The annular groove 14 constrains the baffle 6 so that it no longer rotates.

[0049] In addition to the baffle groove 8, the protective end cover 3 has an annular groove 14 in the center. After the needle injection is completed, the protective end cover 3 is rotated at a certain angle, and the baffle 6 pops out of the baffle groove 8. The protective end cover 3 continues to be rotated, and the angle between the baffle 6 and the protective end cover 3 is 90°, and the bottom end of the baffle 6 will enter the annular groove 14, and the annular groove 14 will block the bottom end of the baffle 6. The baffle 6 will not be able to continue to rotate under the action of the annular groove 14 and will be tightly fixed on the protective end cover 3, which can better block the outer needle 5 and avoid punctures.

[0050] Furthermore, it also includes a needle protection sleeve 11, which is cylindrical and has a blind hole, and the blind hole is adapted to the outer needle.

[0051] The needle protection cover 11 protects the outer needle 5 when not in use, and also protects medical staff. When medical staff install the needle into the insulin pen for the first time, the needle wrapped by the needle protection cover 11 will not stab the medical staff.

[0052] Furthermore, it also includes an outer cap 12 , which includes a cylindrical shell portion and a truncated cone shell portion, and the needle seat 1 and the protective end cover 3 are arranged in the outer cap 12 .

[0053] Furthermore, the cylindrical shell opening end of the outer cap 12 is also provided with a plastic film for easy tearing.

[0054] The function of the outer cap 12 is to protect the entire needle, so that the needle will not stab others when not in use and the needle can be better preserved. The plastic film provided at the open end of the outer cap 12 can ensure that the needle is not contaminated by microorganisms in the air environment.

[0055] Furthermore, a hand-holding portion 13 is also provided on the truncated cone-shaped shell of the outer cap 12 .

[0056] The hand-held portion 13 is arranged on the truncated cone-shaped shell so that it is convenient for medical staff and patients to hold it. After the needle injection is completed, the outer needle 5 is blocked and wrapped by the baffle, but the inner needle 4 still has the possibility of injuring people, especially for patients outside the hospital. The inner needle of the discarded needle may injure the cleaning staff. The hand-held portion 13 on the outer cap 12 is convenient for the patient to hold. For the removed needle, the patient can pinch the hand-held portion 13, with the inner needle 4 facing the outer cap 12 shell, and insert the needle into the outer cap 12. In this way, the outer needle 5 is blocked by the baffle and the inner needle 4 is blocked by the outer cap 12, which basically eliminates the possibility of needle stabbing patients and cleaning staff.

[0057] Another aspect of the present application provides an insulin pen, which, when used in conjunction with the above-mentioned insulin pen needle, can prevent needlestick risks, reduce occupational exposure, and protect medical staff.

[0058] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. An insulin pen needle, characterized in that: include The needle seat has a circular end surface, and includes a needle, a baffle and a baffle base. The needle passes through the needle seat and is arranged at the center of the needle seat. The needle is divided into an outer needle and an inner needle. The outer needle is used to pierce human tissue, and the inner needle is used to connect with the insulin pen cartridge. The baffle base is annular. The needle passes through the center of the annular baffle base. The baffle is adapted to the outer needle. The baffle is arranged on the baffle base. One end of the baffle is rotatably connected to the baffle base. The rotational connection between the baffle base and the baffle provides rotational power through a torsion spring; The protective end cover is adapted in shape and size to the needle seat, and includes a needle hole, a connecting groove and a baffle groove. The setting of the needle hole is adapted to the needle on the needle seat. The needle seat is also provided with a protrusion adapted to the connecting groove. The protective end cover is connected to the needle seat through the cooperation of the connecting groove and the protrusion, and the baffle groove is adapted to the baffle.

2. An insulin pen needle according to claim 1, characterized in that: The blocking strip and the needle approaching surface are provided with arc surfaces adapted to the needle.

3. An insulin pen needle according to claim 2, characterized in that: The number of the baffle bars is three or four.

4. The insulin pen needle according to claim 3, characterized in that: The protective end cover is provided with anti-skid patterns, and the anti-skid patterns are used to increase the friction force of the protective end cover.

5. The insulin pen needle according to claim 4, characterized in that: The protective end cover also includes an annular groove, which is arranged in the center of the protective end cover. The annular groove is used to fix the baffle. When the baffle pops out to surround the outer needle, the protective end cover is rotated to make the baffle rotate into the annular groove. The annular groove constrains the baffle so that it no longer rotates.

6. The insulin pen needle according to claim 1, characterized in that: It also includes a needle protection sleeve, which is cylindrical and has a blind hole, and the blind hole is matched with the outer needle.

7. The insulin pen needle according to claim 1, characterized in that: It also includes an outer cap, which includes a cylindrical shell part and a truncated cone shell part, and the needle seat and the protective end cover are arranged in the outer cap.

8. An insulin pen needle according to claim 7, characterized in that: The cylindrical shell opening end of the outer cap is also provided with a plastic film which is convenient to tear off.

9. An insulin pen needle according to claim 8, characterized in that: A hand-holding part is also arranged on the truncated cone-shaped shell of the outer cap.

10. An insulin pen, characterized in that: Comprising the insulin pen needle as described in any one of claims 1-9.

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