Special injection pen for preventing acupuncture injury of insulin

Abstract

The invention provides an injection pen special for preventing acupuncture injury of insulin, and relates to the technical field of medical instruments, the injection pen comprises an injection pen body, the outer circumference of the injection pen body is provided with a metering observation window, the rear end face of the injection pen body is provided with an injection push key, and the front end face of the injection pen body is provided with a piston rod. The injection needle is sleeved with the inner needle cap and the outer needle cap, multiple protections are formed, it is ensured that the injection needle is properly protected in the transportation, storage and use processes, the probability of pricking injury is greatly reduced, the rubber column is fixedly installed at the front end of the outer needle cap, for old people with poor eyesight, a needle head can be inserted into the rubber column, and the rubber column is fixedly installed at the front end of the outer needle cap. The needle head can be hidden, and the problems that old people with poor eyesight are difficult to read metering scales, and a replaced injection needle is prone to hurting a user and other people are solved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a special insulin injection pen that prevents needle punctures. Background Art

[0002] In the treatment of diabetes, insulin injection is a common and critical treatment method. Although traditional insulin injection pens have met the basic injection needs of patients to a certain extent, there are still some problems that cannot be ignored.

[0003] Based on the above, the existing insulin injection pens still have the following two shortcomings for users:

[0004] First, for patients with poor vision, such as the elderly or people with eye diseases, it is often difficult to read the metering scale on the injection pen, which may lead to inaccurate insulin dosage injection, thus affecting the blood sugar control effect, and may even cause adverse consequences such as hypoglycemia or hyperglycemia due to dosage deviation;

[0005] Secondly, the problem of needle stick injuries during insulin injection has always been a safety hazard faced by medical staff and patients. After the injection, improper handling of the injection needle can easily cause needle stick injuries, which will not only cause physical pain to the user, such as the risk of wound infection and disease transmission, but also increase the psychological burden and affect subsequent treatment compliance. Summary of the invention

[0006] In view of this, the present invention provides a needle-stick-proof insulin injection pen to solve the problem that elderly people with poor eyesight have difficulty in reading the metering scale and that the replaced injection needle is likely to cause harm to the user and others.

[0007] The present invention provides a purpose and function of a needle-stick-proof insulin injection pen, which specifically comprises: an injection pen body;

[0008] The outer circumference of the injection pen body is provided with a metering observation window, the rear end surface of the injection pen body is provided with an injection push button, and the front end surface of the injection pen body is provided with a piston rod;

[0009] A fixed frame, which is a U-shaped structure, is fixedly mounted on the outer end surface of the injection pen body, and the metering observation window is located inside the fixed frame;

[0010] A sliding plate, with a limit slider installed at each end of the sliding plate, and a magnifying glass fixedly installed at the middle position of the surface of the sliding plate;

[0011] A holder, the holder is located in front of the injection pen body, two cavities are symmetrically opened in the middle of the holder, and a thread is opened in front of the inner end surface of the holder;

[0012] The pen core is located inside the holder, and the outer end surface of the front end of the pen core is provided with a thread;

[0013] An injection needle, wherein a connection groove is provided on the rear end surface of the injection needle, a thread is provided inside the connection groove, the injection needle is threadedly connected to the pen core, and an inner needle cap is sleeved outside the needle head at the front end of the injection needle;

[0014] An outer needle cap, which is sleeved on the outside of the injection needle, and the inner end surface of the outer needle cap is evenly provided with second slots;

[0015] The pen cap is sleeved on the outside of the retaining frame, and the pen cap is fitted with the front end surface of the injection pen body.

[0016] Furthermore, a connecting tube is fixedly mounted on the front end surface of the injection pen body, a thread is formed on the outside of the connecting tube, and the connecting tube is threadedly connected to the retaining frame.

[0017] Furthermore, the outer end surface of the middle part of the retaining frame is evenly provided with margin scales, and when the pen core is clamped in the interior of the retaining frame, the outer end surface of the pen core fits with the inner end surface of the retaining frame.

[0018] Furthermore, the outer circumference of the injection needle is evenly equipped with clamping columns, and when the outer needle cap is sleeved on the outside of the injection needle, the clamping columns are clamped in the second clamping groove inside the outer needle cap.

[0019] Furthermore, a rubber column is fixedly mounted on the front end surface of the outer needle cap, and fixing teeth are evenly mounted on the outer end surface of the clamping column, and the outer end surface of the fixing teeth fits with the inner end surface of the second clamping groove.

[0020] Furthermore, a fixing block is installed on the outer end surface of the needle head at the front end of the injection needle, and a limiting strip is evenly installed on the outer end surface of the fixing block.

[0021] Furthermore, the inner end surface of the inner needle cap is evenly equipped with a first card groove, the inner diameter of the inner needle cap is the same as the outer diameter of the fixing block, and when the inner needle cap is sleeved on the outside of the fixing block, the limiting strip at the outer end of the fixing block is clamped in the first card groove inside the inner needle cap.

[0022] Furthermore, a transverse sliding groove is respectively provided on the inner end surfaces of the side plates at both ends of the fixed frame, and the limit sliding blocks at both ends of the sliding plate are slidably mounted in the transverse sliding groove.

[0023] Furthermore, an iron bar is installed on the inner end surface of the transverse slide groove, and two magnets are installed on the outer end surface of the limit slider, and the magnets are in contact with the iron bar.

[0024] The present invention provides a special insulin injection pen for preventing needle punctures, and its beneficial effects are:

[0025] First, precise injection and dosage control. The metering observation window on the injection pen body allows users to read the injection dosage easily, and the remaining amount of insulin in the pen cartridge can be intuitively monitored through the remaining scale on the holder. Users can accurately grasp the dosage and ensure the accuracy of insulin injection, which is crucial for diabetic patients to control their condition.

[0026] Second, convenient operation and user experience. The setting of the injection push button and piston rod conforms to the principle of ergonomics, which is convenient for users to apply force for injection operation. The combination of the fixed frame and the sliding plate enables the magnifying glass to assist users to observe the scale of the metering observation window more clearly, especially for patients with poor eyesight, which greatly improves the convenience and accuracy of operation and enhances the overall user experience.

[0027] Third, the anti-needlestick protection mechanism: the inner needle cap can be firmly put on the needle head at the front end of the injection needle through the tight engagement between the limit strip and the first slot, effectively preventing the needle head from accidentally stabbing the user when not in use; the outer needle cap and the injection needle are engaged through the engagement between the clamping column and the second slot, and the fit between the fixed teeth and the inner end surface of the slot, plus the buffering effect of the rubber column, to form multiple protections, ensuring that the injection needle is properly protected during transportation, storage and after use, greatly reducing the possibility of needlestick injuries, and a rubber column is fixedly installed at the front end of the outer needle cap. For the elderly with poor eyesight, the needle can be inserted into the rubber column, which can also play a role in hiding the needle.

[0028] Fourth, stable structure and component connection. The injection pen body and the retaining frame are connected by a threaded connection through the connecting tube, which ensures the stability of the connection between the two and is also convenient for disassembly and replacement of components, such as refills or injection needles. The fixed installation of the fixed frame and the injection pen body and the sliding card-mounted structure of the sliding plate in the fixed frame ensure the stability and adjustability of the magnifying glass during use. The overall structural design is reasonable, and the components are tightly connected, reducing the situation where the use is affected by loose or falling components. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0030] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0031] In the attached picture:

[0032] Figure 1 It is a schematic diagram of the exploded structure of the overall device of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the injection pen body and the fixing frame of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the injection pen body and the connecting tube of the present invention;

[0035] Figure 4 The present invention Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0036] Figure 5 It is a schematic diagram of the structure of the injection needle of the present invention;

[0037] Figure 6 It is a schematic diagram of the cross-sectional structure of the sliding plate of the present invention;

[0038] Figure 7 It is a schematic diagram of the connection structure between the connecting pipe and the retaining frame of the present invention;

[0039] Figure 8 It is a schematic diagram of the structure of the injection needle and the pen core of the present invention;

[0040] Fig. 9 is a schematic diagram of the cross-sectional structure of the injection needle of the present invention;

[0041] Fig.10 It is a schematic diagram of the cross-sectional structure of the fixing frame of the present invention.

[0042] List of reference numerals:

[0043] 1. Injection pen body; 101. Injection push button; 102. Connecting tube; 103. Piston rod; 2. Fixed frame; 201. Horizontal slide groove; 2011. Iron bar; 3. Sliding plate; 301. Magnifying glass; 302. Limiting slider; 3021. Magnet; 4. Retaining frame; 401. Residual scale; 5. Pen core; 6. Injection needle; 601. Clamping column; 6011. Fixed tooth; 7. Fixed block; 701. Limiting bar; 8. Inner needle cap; 801. First clamping slot; 9. Outer needle cap; 901. Second clamping slot; 902. Rubber column; 10. Pen cap. DETAILED DESCRIPTION

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of specific embodiments of the present invention.

[0045] Example 1: Please refer to Figures 1 to 10 As shown:

[0046] The present invention provides a needle-stick-proof insulin injection pen, comprising an injection pen body 1;

[0047] A metering observation window is provided on the outer circumference of the injection pen body 1, an injection push button 101 is installed on the rear end surface of the injection pen body 1, and a piston rod 103 is installed on the front end surface of the injection pen body 1;

[0048] A fixed frame 2, which is a U-shaped structure and is fixedly mounted on the outer end surface of the injection pen body 1, and a metering observation window is located inside the fixed frame 2;

[0049] A sliding plate 3, with a limit slider 302 installed at each end of the sliding plate 3, and a magnifying glass 301 fixedly installed at the middle position of the surface of the sliding plate 3;

[0050] The holder 4 is located in front of the injection pen body 1, and two cavities are symmetrically provided in the middle of the holder 4, and a thread is provided in front of the inner end surface of the holder 4;

[0051] The refill 5 is located inside the holder 4, and a thread is formed on the outer end surface of the front end portion of the refill 5;

[0052] The injection needle 6 has a connection groove on its rear end surface, a thread is formed inside the connection groove, the injection needle 6 is threadedly connected to the refill 5, and an inner needle cap 8 is sleeved outside the needle head at the front end of the injection needle 6;

[0053] An outer needle cap 9, which is sleeved on the outside of the injection needle 6, and the inner end surface of the outer needle cap 9 is evenly provided with second slots 901;

[0054] The pen cap 10 is sleeved on the outside of the retaining frame 4 , and the pen cap 10 fits with the front end surface of the injection pen body 1 .

[0055] A connecting tube 102 is fixedly mounted on the front end of the injection pen body 1 . The outside of the connecting tube 102 is provided with threads. The connecting tube 102 is threadedly connected to the retaining frame 4 , which facilitates the user to disassemble and install the retaining frame 4 during use.

[0056] The outer end surface of the middle part of the holder 4 is evenly provided with residual scales 401 . When the refill 5 is clamped inside the holder 4 , the outer end surface of the refill 5 fits with the inner end surface of the holder 4 , which is beneficial to ensure the stability of the refill 5 .

[0057] Among them, a fixing block 7 is installed on the outer end surface of the needle head at the front end of the injection needle 6, and a limiting strip 701 is evenly installed on the outer end surface of the fixing block 7. A first card groove 801 is evenly installed on the inner end surface of the inner needle cap 8. The inner diameter of the inner needle cap 8 is the same as the outer diameter of the fixing block 7. When the inner needle cap 8 is sleeved on the outside of the fixing block 7, the limiting strip 701 at the outer end of the fixing block 7 is clamped in the first card groove 801 inside the inner needle cap 8.

[0058] By adopting the above solution, the technical effect brought about is: the inner needle cap 8 is sleeved on the fixing block 7 on the outer end surface of the needle head at the front end of the injection needle 6, and the limiting strip 701 at the outer end of the fixing block 7 is clamped in the first clamping groove 801 inside the inner needle cap 8, ensuring that the inner needle cap 8 is firmly sleeved on the needle head, thereby playing a role in protecting the needle head of the injection needle 6.

[0059] Embodiment 2: The present invention provides a needle-stick-proof insulin injection pen. Based on the embodiment 1, Figure 1-Figure 10 As shown, it also includes: a transverse sliding groove 201 is respectively opened on the inner end surface of the side plates at both ends of the fixed frame 2, and the limiting sliders 302 at both ends of the sliding plate 3 are slidably clamped in the transverse sliding groove 201, and an iron bar 2011 is installed on the inner end surface of the transverse sliding groove 201, and two magnets 3021 are installed on the outer end surface of the limiting slider 302, and the magnets 3021 are in contact with the iron bar 2011.

[0060] By adopting the above scheme, the technical effect brought about is: the limiting sliders 302 at both ends of the sliding plate 3 slide in the horizontal sliding grooves 201 on the inner end surfaces of the side plates at both ends of the fixed frame 2, and the iron bars 2011 on the inner end surfaces of the horizontal sliding grooves 201 and the magnets 3021 on the outer end surfaces of the limiting sliders 302 attract each other, so that the sliding plate 3 can maintain a fixed position when not in use without interfering with normal operation, and can be easily moved to a suitable position when using the magnifying glass 301, so that the user can read the scale on the outer circumferential measurement observation window of the injection pen body 1 more clearly.

[0061] Embodiment 3: The present invention provides a needle-stick-proof insulin injection pen. Based on the embodiment 1, Figure 1-Figure 10 As shown, it also includes: the outer circumference of the injection needle 6 is evenly installed with a clamping column 601, when the outer needle cap 9 is sleeved on the outside of the injection needle 6, the clamping column 601 is clamped in the second clamping groove 901 inside the outer needle cap 9, and the front end surface of the outer needle cap 9 is fixedly installed with a rubber column 902, and the outer end surface of the clamping column 601 is evenly installed with a fixing tooth 6011, and the outer end surface of the fixing tooth 6011 is in contact with the inner end surface of the second clamping groove 901.

[0062] By adopting the above scheme, the technical effect brought about is: after the injection is completed, the injection needle 6 needs to be removed. For patients with good eyesight and flexible hands and feet, the inner needle cap 8 and the outer needle cap 9 can be sleeved on the outside of the injection needle 6 one by one to prevent the injection needle 6 from stabbing others. However, for patients with poor eyesight, through the provision of the rubber column 902 at the front end of the outer needle cap 9, after the user removes the injection needle 6, the needle head at the front end of the injection needle 6 can be inserted into the rubber column 902, and the needle head can also be hidden to prevent stabbing others. The outer needle cap 9 can prevent the needle head of the injection needle 6 from being hit by external force and prevent the needle head from being deformed. At the same time, the fixed tooth 6011 on the outer end face of the clamping column 601 fits with the inner end face of the second clamping groove 901, which can improve the stability of the outer needle cap 9 outside the injection needle 6 and prevent the outer needle cap 9 from slipping off the outside of the injection needle 6.

[0063] Specific usage and function of this embodiment: In the present invention, the inner needle cap 8 is sleeved on the fixing block 7 on the outer end face of the needle head of the front end of the injection needle 6, and the limiting strip 701 on the outer end of the fixing block 7 is clamped in the first clamping groove 801 inside the inner needle cap 8, ensuring that the inner needle cap 8 is firmly sleeved on the needle head, playing a protective role for the needle head of the injection needle 6, and then the outer needle cap 9 is sleeved on the outside of the injection needle 6, and the clamping column 601 on the outer circumference of the injection needle 6 is clamped in the second clamping groove 901 inside the outer needle cap 9, and the outer needle cap 9 can prevent the needle head of the injection needle 6 from being hit by external force and prevent the needle head from being deformed, and at the same time, the fixing teeth 6011 on the outer end face of the clamping column 601 and the second clamping groove The inner end surface of 901 fits well, which can improve the stability of the outer needle cap 9 outside the injection needle 6. When in use, first remove the pen cap 10 from the holder 4 to expose the injection needle 6. Since the injection needle 6 is connected to the pen core 5 through a thread, the pen core 5 is installed in the holder 4 with the remaining scale 401, and the outer end surface of the pen core 5 fits well with the inner end surface of the holder 4, the user can visually observe the remaining amount of insulin in the pen core 5 through the remaining scale 401, so as to replace the pen core 5 in time and ensure the accuracy of the medication dosage. The injection push button 101 on the rear end surface of the injection pen body 1 is used to push the piston rod 103 on the front end surface, thereby pushing the piston in the pen core 5 to inject insulin. Insulin is pushed out from the needle tip at the front end of the injection needle 6 for injection. Before the injection, some elderly people have poor eyesight. In order to allow the user to read the scale on the external circumferential metering observation window of the injection pen body 1 more clearly, the magnifying glass 301 on the sliding plate 3 can be used for auxiliary observation. The limiting sliders 302 at both ends of the sliding plate 3 slide in the transverse slide grooves 201 on the inner end surfaces of the side plates at both ends of the fixed frame 2. The iron bars 2011 on the inner end surfaces of the transverse slide grooves 201 and the magnets 3021 on the outer end surfaces of the limiting sliders 302 attract each other, so that the sliding plate 3 can maintain a fixed position when not in use without interfering with normal operation, and can be easily moved when the magnifying glass 301 is used. To the appropriate position, the injection is finally carried out and the pen cap 10 is re-sleeved on the outside of the retaining frame 4 to make it fit with the front end surface of the injection pen body 1, to protect the injection needle 6 and facilitate storage and carrying. After the injection is completed, the injection needle 6 needs to be removed. For patients with good eyesight and flexible hands and feet, the inner needle cap 8 and the outer needle cap 9 can be sleeved on the outside of the injection needle 6 one by one to prevent the injection needle 6 from stabbing others. However, for patients with poor eyesight, through the setting of the rubber column 902 at the front end of the outer needle cap 9, after the user removes the injection needle 6, the needle head at the front end of the injection needle 6 can be inserted into the rubber column 902, which can also hide the needle head to prevent stabbing others.

Claims

1. A needle-stick-proof insulin injection pen, characterized in that: include: The invention relates to an injection pen body (1), wherein a metering observation window is provided on the outer circumference of the injection pen body (1), an injection push button (101) is installed on the rear end surface of the injection pen body (1), and a piston rod (103) is installed on the front end surface of the injection pen body (1); a fixed frame (2), wherein the fixed frame (2) is a U-shaped structure, the fixed frame (2) is fixedly installed on the outer end surface of the injection pen body (1), and the metering observation window is located inside the fixed frame (2); a sliding plate (3), wherein a limiting slider (302) is installed at each end of the sliding plate (3), and a magnifying glass (301) is fixedly installed at the middle position of the surface of the sliding plate (3); a retaining frame (4), wherein the retaining frame (4) is located in front of the injection pen body (1), and the middle position of the retaining frame (4) is symmetrically opened. The invention is provided with two cavities, and a thread is provided at the front position of the inner end surface of the holder (4); a pen core (5), the pen core (5) is located inside the holder (4), and a thread is provided at the outer end surface of the front end part of the pen core (5); an injection needle (6), a connecting groove is provided at the rear end surface of the injection needle (6), a thread is provided inside the connecting groove, the injection needle (6) is threadedly connected to the pen core (5), and an inner needle cap (8) is sleeved on the outer side of the needle head at the front end of the injection needle (6); an outer needle cap (9), the outer needle cap (9) is sleeved on the outer side of the injection needle (6), and a second clamping groove (901) is evenly provided on the inner end surface of the outer needle cap (9); and a pen cap (10), the pen cap (10) is sleeved on the outer side of the holder (4), and the pen cap (10) is fitted with the front end surface of the injection pen body (1).

2. The needle-stick-proof insulin injection pen according to claim 1, characterized in that: A connecting tube (102) is fixedly mounted on the front end surface of the injection pen body (1), a thread is formed on the outside of the connecting tube (102), and the connecting tube (102) is threadedly connected to the retaining frame (4).

3. The needle-stick-proof insulin injection pen according to claim 1, characterized in that: The outer end surface of the middle part of the retaining frame (4) is evenly provided with residual scales (401), and when the pen core (5) is clamped inside the retaining frame (4), the outer end surface of the pen core (5) fits with the inner end surface of the retaining frame (4).

4. The needle-stick-proof insulin injection pen according to claim 1, characterized in that: The outer circumference of the injection needle (6) is evenly provided with clamping columns (601), and when the outer needle cap (9) is sleeved on the outside of the injection needle (6), the clamping columns (601) are clamped in the second clamping groove (901) inside the outer needle cap (9).

5. The needle-stick-proof insulin injection pen according to claim 1, characterized in that: A rubber column (902) is fixedly mounted on the front end surface of the outer needle cap (9), and fixed teeth (6011) are evenly mounted on the outer end surface of the clamping column (601), and the outer end surface of the fixed teeth (6011) fits with the inner end surface of the second clamping groove (901).

6. The needle-stick-proof insulin injection pen according to claim 1, characterized in that: A fixing block (7) is installed on the outer end surface of the needle head at the front end of the injection needle (6), and a limiting strip (701) is evenly installed on the outer end surface of the fixing block (7).

7. The needle-stick-proof insulin injection pen according to claim 1, characterized in that: The inner end surface of the inner needle cap (8) is evenly provided with a first clamping groove (801), the inner diameter of the inner needle cap (8) is the same as the outer diameter of the fixing block (7), and when the inner needle cap (8) is sleeved on the outside of the fixing block (7), the limiting strip (701) at the outer end of the fixing block (7) is clamped in the first clamping groove (801) inside the inner needle cap (8).

8. The needle-stick-proof insulin injection pen according to claim 1, characterized in that: The inner end surfaces of the side plates at both ends of the fixed frame (2) are respectively provided with a transverse sliding groove (201), and the limiting sliding blocks (302) at both ends of the sliding plate (3) are slidably mounted in the transverse sliding groove (201).

9. The needle-stick-proof insulin injection pen according to claim 8, characterized in that: An iron bar (2011) is installed on the inner end surface of the transverse sliding groove (201), and two magnets (3021) are installed on the outer end surface of the limiting sliding block (302), and the magnets (3021) are in contact with the iron bar (2011).

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