Automatic injection pen device for first aid of epinephrine

Abstract

The utility model provides an epinephrine emergency automatic injection pen device, and belongs to the technical field of medical treatment. The epinephrine first-aid automatic injection pen device comprises a protection assembly and an automatic injection assembly and is provided with a bottom cover, a pen shell, a pen cap, a protection shell, a power sleeve, a main spring, a push rod, a rear sleeve, an auxiliary spring, a pre-filling injector and a front sleeve, the pen cap is taken down firstly, the protection shell is pressed to push the rear sleeve, the rear sleeve slides to extrude a first clamping hook of the bottom cover, the power sleeve is released, and the automatic injection assembly is started; the main spring restores elasticity to push the push rod and the power sleeve, the power sleeve pushes the pre-filling syringe and the front sleeve, so that the needle head leaks out and is inserted into the muscle layer, then the push rod pushes the pre-filling syringe to conduct injection, and the needle head leaks out, is inserted into the muscle layer and then injects liquid medicine only by pulling out the pen cap. According to the utility model, not only is the accurate injection of liquid medicine metering ensured, but also the operation steps are greatly simplified, the practicability and timeliness are improved, and precious time is won for first aid.

Description

Technical Field

[0001] The present application relates to the field of medical technology, and in particular to an adrenaline emergency automatic injection pen device. Background Art

[0002] Epinephrine is a vasoactive drug for shock and the first choice for rescuing patients in shock. It can quickly relieve the clinical symptoms of anaphylactic shock and save the patient's life. In addition, epinephrine is also used for various allergic reactions, such as type I allergic reactions caused by food, drugs, pollen, dust, insect bites, etc. With the influence of the environment, various allergens are increasing, and more or less everyone has experienced allergic attacks. Once a severe allergy is encountered, it is accompanied by rapid onset and rapid progression. If rescue is not timely, it may even be life-threatening. However, if the epinephrine automatic injector can be used for emergency treatment in time, according to statistics, more than 80% of patients can be saved.

[0003] At present, some subcutaneous automatic injectors are in use. The more common injectors need to pull out the protective cap to expose the needle and insert it into the subcutaneous layer for injection. This method is to press the protective shell, expose the needle and then insert it into the skin for active injection, which will cause patients to fear injection. The faster-to-use epinephrine automatic injector removes the protective cap and injects while inserting it into the muscle layer. Although it greatly reduces the steps and improves efficiency, the drug will leak out, resulting in the injection volume not meeting the requirements and causing waste. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides an epinephrine emergency automatic injection pen device, which aims to improve the problems raised in the above background technology.

[0005] An embodiment of the present application provides an epinephrine emergency automatic injection pen device including a protection component and an automatic injection component.

[0006] The protective component comprises a bottom cover, a pen shell, a pen cap and a protective shell, wherein the bottom cover is arranged at the bottom of the pen shell, the pen cap is plugged into the end of the pen shell, and the protective shell is slidably inserted into the pen shell.

[0007] The automatic injection assembly includes a power sleeve, a main spring, a push rod, a rear sleeve, a secondary spring, a prefilled syringe and a front sleeve. The power sleeve is clamped in the bottom cover, the main spring is arranged in the power sleeve, one end of the push rod is clamped in the power sleeve, the rear sleeve is sleeved on the outside of the power sleeve, the secondary spring is sleeved on the outside of the rear sleeve and abuts against the bottom cover, the prefilled syringe is penetrated in the front sleeve, and one end of the front sleeve is connected to the power sleeve.

[0008] In a specific embodiment, the bottom cover is provided with a first hook, and the first hook is engaged in the side hole of the power sleeve.

[0009] In the above implementation process, a first hook is provided to hook the power sleeve so as to keep the power sleeve stationary when no injection is performed.

[0010] In a specific embodiment, a bypass opening is provided at the other end of the rear sleeve, and the bypass opening corresponds to the first hook.

[0011] In the above implementation process, by opening the avoidance port, the first hook is bent into the avoidance port when injection is required, so as to clear the power sleeve and allow it to slide.

[0012] In a specific embodiment, an elastic hook is provided on one side of the power sleeve, and the elastic hook is engaged with the push rod.

[0013] In the above implementation process, an elastic hook is provided to hook the push rod, so that the push rod cannot move when the power sleeve is not moving, thereby preventing the injection of the drug solution.

[0014] In a specific embodiment, the end of the prefilled syringe is sleeved with a soft protective cap, and a second hook is arranged in the pen cap, and the second hook is engaged with the soft protective cap.

[0015] In the above implementation process, a soft protective cap is provided to cover the needle head of the prefilled syringe, and the second hook is provided so that when the pen cap is pulled off, the pen cap drives the second hook to remove the soft protective cap together.

[0016] In a specific embodiment, a third hook is disposed in the protective shell, and the third hook is engaged with the surface of the second hook.

[0017] In the above implementation process, by setting the third hook to hook the second hook, the protective shell will not slide inward when the pen cap is not removed manually, thereby avoiding accidental activation of the trigger injection.

[0018] In a specific implementation, an elastic arm is arranged on the outside of the protective shell, and a limiting hole and an avoidance hole are provided on the pen shell.

[0019] In the above implementation process, by providing the elastic arm and the limiting hole, the position of the positioning protective shell is limited to cover the needle after the injection is completed, and the avoidance hole serves as a retention space for the elastic arm when the injection is not used.

[0020] In a specific embodiment, a protective pad and a metering block are provided between the push rod and the prefilled syringe.

[0021] In the above implementation process, a protective pad is provided to buffer the extrusion injection of the push rod, and a metering block is provided. According to the specification of the injection volume, a metering block of corresponding size is placed at the initial stage of manufacturing to ensure a fixed injection volume.

[0022] Beneficial effects: The present application provides an adrenaline emergency automatic injection pen device, which is provided with a bottom cover, a pen shell, a pen cap, a protective shell, a power sleeve, a main spring, a push rod, a rear sleeve, a secondary spring, a prefilled syringe and a front sleeve. The pen cap is first removed, the protective shell is pressed to push the rear sleeve, the rear sleeve slides and squeezes the bottom cover, the power sleeve is released, the main spring elastically recovers to push the push rod and the power sleeve, the power sleeve pushes the prefilled syringe and the front sleeve, so that the needle leaks out and is inserted into the muscle layer. At this time, the push rod pushes the prefilled syringe to inject again, so that only the pen cap needs to be pulled off, the needle can be leaked out and inserted into the muscle layer at the same time, and then the liquid medicine is injected, which not only ensures the accurate injection of the liquid medicine, but also greatly simplifies the operation steps and improves practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of an adrenaline emergency automatic injection pen device provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of the protection component provided for the implementation mode of the present application;

[0026] Figure 3 A schematic diagram of the structure of an automatic injection assembly provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the injection state structure provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the protective shell structure provided in the embodiment of the present application;

[0029] Figure 6 A schematic diagram of the power sleeve structure provided in an embodiment of the present application;

[0030] Figure 7 A schematic diagram of the explosion structure of an injection pen is provided for the embodiment of the present application;

[0031] Figure 8 A schematic diagram of the structure of the prefilled syringe needle being pushed out provided in an embodiment of the present application;

[0032] Fig. 9 A schematic diagram of the protective state structure of the needle of a prefilled syringe provided in an embodiment of the present application.

[0033] In the figure: 100-protective component; 110-bottom cover; 111-first hook; 120-pen case; 130-pen cap; 131-second hook; 140-protective case; 141-third hook; 142-elastic arm; 200-automatic injection component; 220-power sleeve; 221-elastic hook; 230-main spring; 240-push rod; 241-protective pad; 242-metering block; 250-rear sleeve; 251-avoidance port; 260-secondary spring; 280-prefilled syringe; 281-soft protective cap; 290-front sleeve. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0035] See also Figure 1-Figure 9 The present application provides an epinephrine emergency automatic injection pen device including a protection component 100 and an automatic injection component 200.

[0036] See also Figure 1 , 2 , 3 and 7, the protective assembly 100 includes a bottom cover 110, a pen housing 120, a pen cap 130 and a protective housing 140, the bottom cover 110 is arranged at the bottom of the pen housing 120, the pen cap 130 is inserted into the end of the pen housing 120, and the protective housing 140 is slidably inserted into the pen housing 120.

[0037] In a specific implementation, a third hook 141 is disposed in the protective shell 140 , and the third hook 141 is hooked to the surface of the second hook 131 .

[0038] In the above implementation process, by providing the third hook 141 to hook the second hook 131 , when the pen cap 130 is not manually removed, the protective shell 140 will not slide inwards, thereby avoiding accidental activation of the trigger injection.

[0039] In a specific implementation scheme, an elastic arm 142 is provided on the outside of the protective shell 140, and a limiting hole and an avoidance hole are provided in the pen shell 120. By providing the elastic arm 142 and the limiting hole, the position of the protective shell 140 is limited to cover the needle after the injection is completed, and the avoidance hole serves as a retention space for the elastic arm 142 when the injection is not in use.

[0040] See also Figure 1 , 3, 4, 5, 6, 7, 8 and 9, the automatic injection assembly 200 includes a power sleeve 220, a main spring 230, a push rod 240, a rear sleeve 250, a secondary spring 260, a prefilled syringe 280 and a front sleeve 290, the power sleeve 220 is clamped in the bottom cover 110, the main spring 230 is arranged in the power sleeve 220, one end of the push rod 240 is clamped in the power sleeve 220, the rear sleeve 250 is sleeved on the outside of the power sleeve 220, the secondary spring 260 is sleeved on the outside of the rear sleeve 250 and abuts against the bottom cover 110, the prefilled syringe 280 is penetrated and arranged in the front sleeve 290, and one end of the front sleeve 290 is connected to the power sleeve 220.

[0041] The bottom cover 110 is provided with a first hook 111, which is engaged in the side hole of the power sleeve 220. The first hook 111 is provided to hook the power sleeve 220 so as to keep the power sleeve 220 stationary when no injection is performed.

[0042] In a specific embodiment, a avoidance opening 251 is opened at the other end of the rear sleeve 250, and the avoidance opening 251 corresponds to the first hook 111. By opening the avoidance opening 251, when injection is needed, the first hook 111 is used to bend into the avoidance opening 251 to allow the power sleeve 220 to slide.

[0043] In a specific implementation, an elastic hook 221 is provided on one side of the power sleeve 220, and the elastic hook 221 is connected to the push rod 240. By providing the elastic hook 221 to hook the push rod 240, the push rod 240 cannot move when the power sleeve 220 is stationary, thereby preventing the injection of the drug solution.

[0044] In a specific implementation scheme, a soft protective cap 281 is sleeved on the end of the prefilled syringe 280, and a second hook 131 is provided in the pen cap 130, and the second hook 131 is engaged with the soft protective cap 281. The soft protective cap 281 is provided to cover the needle head of the prefilled syringe 280. Through the provision of the second hook 131, when the pen cap 130 is pulled off, the pen cap 130 drives the second hook 131 to remove the soft protective cap 281 together.

[0045] In a specific implementation scheme, a protective pad 241 and a metering block 242 are provided between the push rod 240 and the prefilled syringe 280. By providing the protective pad 241, the extrusion injection of the push rod 240 is buffered. By providing the metering block 242, a metering block 242 of a corresponding size is placed at the beginning of manufacturing according to the specification of the injection volume to ensure a fixed injection volume.

[0046] The working principle of the adrenaline emergency automatic injection pen device is as follows: when in use, the pen cap 130 is pulled off, and the pen cap 130 drives the second hook 131 to remove the soft protective cap 281 together, and then the pen shell 120 is held by hand, and the end of the protective shell 140 is pressed against the injection site, and the protective shell 140 pushes the rear sleeve 250, and one end of the rear sleeve 250 contacts the first hook 111, and the inclined surface of the end of the rear sleeve 250 squeezes the inclined surface of the first hook 111, so that the first hook 111 is stretched outward, thereby removing the first hook. The hook 111 binds the power sleeve 220, and the main spring 230 is able to recover elastically to push the push rod 240 and the power sleeve 220 to move. The power sleeve 220 pushes the prefilled syringe 280 and the front sleeve 290 to move, so that the needle at the end of the prefilled syringe 280 passes through the hole of the protective shell 140, and the needle is extended and inserted into the muscle layer of the injection site while squeezing the protective shell 140. At this time, the prefilled syringe 280 is pushed out, and then the needle pops out. When the prefilled syringe 280 reaches the specified The push rod 240 is in the position where the main spring 230 continues to push the push rod 240, and the push rod 240 moves forward. When the push rod 240 pushes the metering block 242 and the protective pad 241 to fully contact, the push rod 240 is completely pushed. The protective shell 140 is pushed into a metered manner. After the injection is completed, the protective shell 140 is released. The protective shell 140 moves forward under the release action of the auxiliary spring 260. When the upper and lower elastic arms 142 of the protective shell 140 move to the limiting holes on the front side of the pen shell 120, the protective shell 140 is stuck. The protective shell 140 hides the needle at this time to form a protection function to avoid secondary accidental injuries. Therefore, you only need to remove the pen cap 130 to remove the needle and insert it into the muscle layer at the same time, and then inject the medicine. This not only ensures the accurate injection of the medicine, but also greatly simplifies the operation steps.

[0047] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An adrenaline emergency automatic injection pen device, characterized in that: include A protection component (100), the protection component (100) comprising a bottom cover (110), a pen case (120), a pen cap (130) and a protection case (140), the bottom cover (110) being arranged at the bottom of the pen case (120), the pen cap (130) being plugged into the end of the pen case (120), and the protection case (140) being slidably inserted into the pen case (120); An automatic injection assembly (200), the automatic injection assembly (200) comprising a power sleeve (220), a main spring (230), a push rod (240), a rear sleeve (250), a secondary spring (260), a prefilled syringe (280) and a front sleeve (290), the power sleeve (220) being clamped in the bottom cover (110), the main spring (230) being arranged in the power sleeve (220), one end of the push rod (240) being clamped in the power sleeve (220), the rear sleeve (250) being sleeved on the outside of the power sleeve (220), the secondary spring (260) being sleeved on the outside of the rear sleeve (250) and abutting against the bottom cover (110), the prefilled syringe (280) being arranged through the front sleeve (290), and one end of the front sleeve (290) being connected to the power sleeve (220).

2. The adrenaline emergency automatic injection pen device according to claim 1, characterized in that: The bottom cover (110) is provided with a first hook (111), and the first hook (111) is engaged in a side hole of the power sleeve (220).

3. The adrenaline emergency automatic injection pen device according to claim 2, characterized in that: The other end of the rear sleeve (250) is provided with an escape opening (251), and the escape opening (251) corresponds to the first hook (111).

4. The adrenaline emergency automatic injection pen device according to claim 1, characterized in that: An elastic hook (221) is provided on one side of the power sleeve (220), and the elastic hook (221) is engaged with the push rod (240).

5. The adrenaline emergency automatic injection pen device according to claim 1, characterized in that: The end of the prefilled syringe (280) is sleeved with a soft protective cap (281), and a second hook (131) is arranged inside the pen cap (130), and the second hook (131) is engaged with the soft protective cap (281).

6. The adrenaline emergency automatic injection pen device according to claim 5, characterized in that: A third hook (141) is arranged inside the protective shell (140), and the third hook (141) is hooked on the surface of the second hook (131).

7. The adrenaline emergency automatic injection pen device according to claim 1, characterized in that: An elastic arm (142) is arranged on the outside of the protective shell (140), and a limiting hole and an avoidance hole are provided on the pen shell (120).

8. The adrenaline emergency automatic injection pen device according to claim 1, characterized in that: A protective pad (241) and a metering block (242) are provided between the push rod (240) and the prefilled syringe (280).

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