Improved double-sound type injection training pen

Abstract

The utility model relates to the technical field of injection equipment, and particularly discloses an improved double-sound type injection training pen which is additionally provided with a push cylinder limiting ring which is rotatably arranged below a two-sound piece limiting sleeve on the basis of an existing double-sound type injection training pen, and the push cylinder limiting ring is connected with the two-sound piece limiting sleeve before a sound piece enters a sound descending state. The liquid pushing simulating sleeve is limited to slide downwards; and the rotating shaft is used for rotating to allow the liquid pushing simulating sleeve to penetrate through after the sound piece enters the sound descending state so as to relieve the limitation on downward sliding of the liquid pushing simulating sleeve. The improved double-sound type injection training pen provided by the utility model can solve the problem that the liquid pushing simulating sleeve of the existing double-sound type injection training pen is easy to slide down in advance, so that the first sound cannot be generated.

Description

Technical Field

[0001] This utility model relates to the field of injection equipment technology, and in particular to an improved dual-sound injection training pen. Background Technology

[0002] Patent CN219303180U discloses a dual-sound injection training pen, whose core components include a sound-emitting element, a simulated push sleeve (used to simulate the push sleeve in the injection pen for pushing the liquid out of the reservoir), and a simulated reservoir (used to simulate the reservoir in the injection pen for storing the liquid).

[0003] Under normal circumstances, before injection training, the simulated injection sleeve should be in a high position. Only when the user performs injection training, after the trigger is activated and slides down and hits the simulated injection sleeve, will the simulated injection sleeve move downward relative to the simulated reservoir to simulate the process of the injection sleeve pushing the liquid out of the reservoir during injection.

[0004] However, in actual use, it was found that because the simulated liquid injection sleeve lacks a limiting structure at the bottom, in a long-term vertical storage environment or a bumpy and shaky transportation environment, the simulated liquid injection sleeve may slide down prematurely due to external factors such as gravity and detach from its original position. This results in a situation where, when the user performs injection training, the first sounding component is triggered and slides down, but because the simulated liquid injection sleeve is detached from its original position, it cannot strike and produce the first sound.

[0005] Therefore, it is necessary to improve the existing double-sound injection training pen to solve the problem that its simulated liquid-dispensing sleeve tends to slide down prematurely, thus failing to produce the first sound.

[0006] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide an improved double-sound injection training pen that solves the problem that the simulated liquid-pushing sleeve of existing double-sound injection training pens tends to slide down prematurely, thus failing to produce the first sound.

[0008] To achieve the above objectives, this utility model provides an improved dual-sound injection training pen, comprising a single-sound component, a single-sound component limiting sleeve rotatably fitted outside the single-sound component, a simulated liquid-push sleeve with a first stop protrusion, a second-sound component located below the single-sound component limiting sleeve, and a second-sound component limiting sleeve rotatably fitted outside the second-sound component and having a second stop protrusion.

[0009] in,

[0010] The sound-emitting element has a sound-emitting lifting state in which it is limited by the sound-emitting element limiting sleeve and moves upward away from the first stop boss, and a sound-emitting lowering state in which it is driven downward and strikes the first stop boss and emits the first sound.

[0011] The two sound-emitting components have a two-sound-lifting state in which they are limited upward by the two-sound-emitting component limiting sleeve and disengage upward from the second stop boss, and a two-sound-emitting descending state in which they are triggered by the sound-emitting component, driven downward to strike the second stop boss and emit a second sound.

[0012] Also includes:

[0013] A push cylinder limiting ring is rotatably mounted below the two sound component limiting sleeves. It is used to restrict the downward sliding of the simulated push liquid sleeve before the sound component enters the sound descent state; and to rotate to allow the simulated push liquid sleeve to pass through after the sound component enters the sound descent state, so as to release the restriction on the downward sliding of the simulated push liquid sleeve.

[0014] Optional,

[0015] The exterior of the simulated liquid-push sleeve is provided with a vertical sleeve boss;

[0016] The inner side of the push cylinder limiting ring is provided with a limiting baffle corresponding to the position of the vertical sleeve boss to restrict the downward sliding of the vertical sleeve boss. The limiting baffle is provided with an avoidance notch for the vertical sleeve boss to pass through.

[0017] Optional, also includes:

[0018] A sliding sleeve assembly, the sliding sleeve assembly including an upper sliding sleeve that is rotatably connected to and engaged with the sound component limiting sleeve, and a lower sliding sleeve that is fixedly engaged with the upper sliding sleeve;

[0019] The pen body has a receiving cavity with openings at both the top and bottom; the sliding sleeve assembly is slidably disposed in the receiving cavity, with its upper end rotatably connected and engaged with the sound component limiting sleeve, and its lower end extending to the outside of the lower opening of the receiving cavity.

[0020] A simulated liquid reservoir is fixedly disposed below the two-part limiting sleeve relative to the pen body, so as to allow the simulated liquid-pushing sleeve to be inserted and withdrawn; wherein, a sliding sleeve spring is provided between the simulated liquid reservoir and the sliding sleeve.

[0021] A cover assembly that seals the upper opening of the accommodating cavity.

[0022] Optional,

[0023] The outer side of the pusher cylinder limiting ring is provided with a limiting ring guide boss;

[0024] The inner wall of the sliding sleeve is provided with a limiting ring guide groove corresponding to the position of the limiting ring guide boss; the lower width of the limiting ring guide groove is smaller than the upper width of the limiting ring guide groove.

[0025] Optional,

[0026] The first sidewall on one side of the guide groove of the limiting ring is a vertical planar structure, and the second sidewall on the other side opposite to the first sidewall includes a first vertical sidewall located at the top, a second vertical sidewall located at the bottom, and an inclined transition sidewall connecting the first vertical sidewall and the second vertical sidewall.

[0027] Optional, also includes:

[0028] A limiting ring torsion spring is located between the push cylinder limiting ring and the two sound component limiting sleeve. One end of the limiting ring torsion spring is fixedly connected to the two sound component limiting sleeve, and the other end is fixedly connected to the push cylinder limiting ring.

[0029] Wherein, the limiting ring torsion spring is used to drive the limiting ring guide boss to always abut against the second sidewall, so that:

[0030] When the guide boss of the limiting ring is located at the lower part of the guide groove of the limiting ring, the clearance notch is misaligned with the vertical sleeve boss;

[0031] When the guide boss of the limiting ring is located above the guide groove of the limiting ring, the clearance notch is aligned with the vertical sleeve boss.

[0032] Optionally, a locking block for the sound-emitting element is provided on the outside of the sound-emitting element;

[0033] The sound component limiting sleeve is provided with a longitudinal sliding groove for the sound component to pass through the locking block on the sound component, wherein the groove wall on one side of the longitudinal sliding groove of the sound component is provided with a sound component stop plane and a sound component guide slope located below the sound component stop plane.

[0034] The outer side of the sound component limiting sleeve is fitted with a sound sleeve torsion spring;

[0035] The torsion spring is used to drive the limiting sleeve of the sound component to rotate in the forward direction relative to the sound component until the stopping plane of the sound sleeve is located below the locking block on the sound component, so that the sound component maintains the sound lifting state.

[0036] Optionally, the upper cover assembly is provided with an upper cover guide slope;

[0037] The upper cover guide slope is used to cause the sound element limiting sleeve to rotate in the opposite direction relative to the sound element until the sound element is disengaged from the stop plane of the sound sleeve.

[0038] The sound-emitting component is equipped with a sound-emitting and hydraulic spring above it.

[0039] Optionally, the inner wall of the two sound components is provided with two sound component retaining blocks;

[0040] The two-sound component limiting sleeve is provided with a longitudinal sliding groove for the insertion of the two-sound component locking block, wherein the upper part of the groove wall on one side of the longitudinal sliding groove of the two-sound component is provided with a two-sound component stop plane.

[0041] Two sound springs are fitted on the outside of the two-sound limiting sleeve;

[0042] The two-sound spring is used to drive the two-sound component to rotate in the positive direction relative to the two-sound component limiting sleeve until the two-sound component locking block is located above the two-sound sleeve stop plane, so that the two-sound component maintains the two-sound lifting state;

[0043] The bottom of the upper block of the acoustic component and / or the top of the upper block of the dual acoustic component are provided with dual acoustic guide slopes;

[0044] When the first sounding component slides down to the bottom of the simulated liquid storage cylinder, the bottom of the first sounding component's upper locking block abuts against and slides relative to the top of the second sounding component's locking block. Under the action of the second sounding guide inclined surface, the second sounding component rotates in the opposite direction relative to the second sounding component's limiting sleeve until the second sounding component's locking block disengages from the second sounding sleeve's stop plane. Under the squeezing action of the second sounding spring, the second sounding component's locking block inserts into the lower part of the second sounding sleeve's longitudinal sliding groove, causing the second sounding component to enter the second sounding descent state.

[0045] Optionally, it also includes a lower cover assembly for sealing the lower opening of the accommodating cavity;

[0046] The lower cover assembly includes a cover seat that covers the sliding sleeve assembly and a reset push rod fixed to the top of the cover seat;

[0047] The reset push rod is used to lift the simulated push liquid sleeve upward, so that the sound-emitting element slides upward along the guide slope of the sound sleeve until the sound-emitting element is reset to the sound-emitting lifted state.

[0048] The beneficial effects of this utility model are as follows: It provides an improved double-sound injection training pen, in which a rotatable push-tube limiting ring is set at the bottom of the two-sound limiting sleeve.

[0049] The push cylinder limiting ring can restrict the downward sliding of the simulated liquid-push sleeve before the sound-sounding component enters the sound-sounding descent state, thereby solving the problem that the simulated liquid-push sleeve of the existing double-sounding injection training pen tends to slide down prematurely, resulting in the inability to produce the first sound.

[0050] After the sound-emitting element enters the sound-dropping state, the push cylinder limiting ring rotates to allow the simulated push liquid sleeve to pass through, thereby releasing the restriction on the downward sliding of the simulated push liquid sleeve and generating a second sound.

[0051] Therefore, the improved double-sound injection training pen provided by this utility model can solve the problem that the simulated liquid-pushing sleeve of the existing double-sound injection training pen tends to slide down prematurely, thus failing to produce the first sound. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A schematic diagram of the improved dual-sound injection training pen provided for an embodiment;

[0054] Figure 2 for Figure 1 A diagram showing the pen body without its actual shape;

[0055] Figure 3 A first-view explosion diagram of the improved dual-sound injection training pen provided for an embodiment;

[0056] Figure 4 for Figure 3 Exploded view of component A;

[0057] Figure 5 An explosion diagram of a sound-emitting element and a sound-limiting sleeve provided for an embodiment;

[0058] Figure 6 An exploded view of the two-sound component and the two-sound limiting sleeve provided in the embodiment;

[0059] Figure 7 A cross-sectional schematic diagram of the improved dual-sound injection training pen provided in the embodiment;

[0060] Figure 8 A schematic diagram showing the pusher sleeve being blocked from sliding downwards by the pusher sleeve, as provided in the embodiment;

[0061] Figure 9 This is a schematic diagram showing the pusher sleeve rotating to a position where it can slide downwards, as provided in the embodiment.

[0062] Figure 10 This is a schematic diagram of the structure of the sliding sleeve provided in the embodiment.

[0063] In the picture:

[0064] 1. Pen body; 101. Receptacle cavity; 102. Viewing window;

[0065] 2. Top cover assembly; 201. Top cover guide slope;

[0066] 3. Lower cover assembly; 301. Cover base; 302. Reset push rod;

[0067] 4. Sliding sleeve assembly; 401. Upper sliding sleeve; 402. Lower sliding sleeve; 4021. Limiting ring guide groove; 4021a. First vertical sidewall; 4021b. Second vertical sidewall; 4021c. Inclined transition sidewall;

[0068] 5. Imitation liquid storage tank;

[0069] 6. One-sound component; 601. Upper locking block of one-sound component; 602. Lower locking block of one-sound component;

[0070] 7. Sound component limit sleeve; 701. Sound component longitudinal groove; 702. Sound component stop plane; 703. Sound component guide slope;

[0071] 8. Imitation hydraulic sleeve; 801. First stop boss; 802. Vertical sleeve boss;

[0072] 9. Two-sound component; 901. Two-sound component locking block; 9011. Two-sound guide ramp;

[0073] 10. Two-sound component limiting sleeve; 1001. Second stop boss; 1002. Longitudinal groove of the two-sound sleeve; 1003. Stop plane of the two-sound sleeve;

[0074] 11. A torsion spring;

[0075] 12. A single sound simultaneously pushes the hydraulic spring;

[0076] 13. Two-sound spring;

[0077] 14. Sliding sleeve spring;

[0078] 15. Connecting rod;

[0079] 16. Piston;

[0080] 17. Push cylinder limiting ring; 1701. Limiting baffle; 1702. Clearance notch; 1703. Limiting ring guide boss;

[0081] 18. Limiting ring torsion spring. Detailed Implementation

[0082] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0083] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0084] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0085] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0086] This invention provides an improved dual-sound injection training pen, suitable for applications where patients learn how to use injection pens. It can emit sounds at two key moments, at the beginning and end of drug injection, to remind patients and thus improve their user experience.

[0087] See Figures 1-4 In this embodiment, the improved dual-sound injection training pen includes a pen body 1, an upper cover assembly 2, and a lower cover assembly 3. The pen body 1 has a receiving cavity 101 with openings at both the upper and lower ends. The upper cover assembly 2 covers the upper opening of the receiving cavity 101, and the lower cover assembly 3 covers the lower opening of the receiving cavity 101.

[0088] The pen body 1 is equipped with a sliding sleeve assembly 4 that can slide up and down relative to the pen body 1 and a simulated liquid reservoir 5 (used to simulate the liquid reservoir used to store medicine in an injection pen) that is fixedly attached to the lower part of the accommodating cavity 101.

[0089] Furthermore, the pen body 1 also includes a sounding element 6, a sounding element limiting sleeve 7 rotatably sleeved outside the sounding element 6, a simulated liquid-push sleeve 8 with a first stop protrusion 801 (used to simulate the liquid-push sleeve used to push the liquid out of the reservoir in an injection pen), a second sounding element 9 located below the sounding element limiting sleeve 7, and a second sounding element limiting sleeve 10 rotatably sleeved outside the second sounding element 9 and provided with a second stop protrusion 1001.

[0090] The two-element limiting sleeve 10 is fixedly disposed relative to the pen body 1, and the simulated liquid reservoir 5 is fixedly disposed below the two-element limiting sleeve 10 relative to the pen body 1, for the insertion and withdrawal of the simulated injection sleeve 8. Optionally, the simulated liquid reservoir 5 is transparent, and the pen body 1 is provided with a viewing window 102 corresponding to the position of the simulated liquid reservoir 5, so that the patient can observe the insertion depth of the simulated injection sleeve 8 inside the simulated liquid reservoir 5 through the viewing window 102 and visually judge the injection status of the drug.

[0091] Optionally, the sliding sleeve assembly 4 includes an upper sliding sleeve 401 that is rotatably connected to and engaged with the acoustic component limiting sleeve 7, and a lower sliding sleeve 402 that is fixedly engaged with the upper sliding sleeve 401. For example, the acoustic component limiting sleeve 7 is engaged with the upper sliding sleeve 401, so the two are relatively fixed in the vertical direction. However, the slot width of the upper sliding sleeve 401 is relatively large, so the acoustic component limiting sleeve can rotate relative to the upper sliding sleeve 401 around the vertical axis to a certain extent, thereby achieving rotatable engagement.

[0092] In this embodiment, the sound-making component 6 has a sound-making lifting state in which it is limited by the sound-making component limiting sleeve 7 and moves upward away from the first stop boss 801, and a sound-making lowering state in which it is driven downward and strikes the first stop boss 801 and emits the first sound.

[0093] The two-sound component 9 has a two-sound lifting state in which it is limited upward by the two-sound component limiting sleeve 10 and disengages from the second stop boss 1001, and a two-sound descending state in which it is triggered by the one-sound component 6, driven downward to strike the second stop boss 1001 and emit a second sound.

[0094] (1) About the first sound

[0095] See Figure 5 The outer upper part of the sound component 6 is provided with a sound component upper locking block 601, and the sound component limiting sleeve 7 is provided with a sound sleeve longitudinal sliding groove 701 for the sound component upper locking block 601 to pass through. The groove wall on one side of the sound sleeve longitudinal sliding groove 701 is provided with a sound sleeve stop plane 702 and a sound sleeve guide slope 703 located below the sound sleeve stop plane 702.

[0096] A sound element limiting sleeve 7 is fitted with a sound sleeve torsion spring 11 on its outside;

[0097] The torsion spring 11 is used to drive the limiting sleeve 7 of the sound element to rotate in the forward direction relative to the sound element 6 until the stopping plane 702 of the sound element is located below the locking block 601 on the sound element, so that the sound element 6 maintains the sound lifting state.

[0098] Optionally, the upper cover assembly 2 is provided with an upper cover guide slope 201, and a sound-emitting and liquid-push spring 12 is provided above the sound-emitting element 6.

[0099] When the sliding sleeve assembly 4 drives the sound element limiting sleeve 7 to move upward, the sound element limiting sleeve 7 rotates in the opposite direction to the sound element 6 under the guidance of the upper cover guide slope 201 until the sound element 6 is separated from the sound sleeve stop plane 702.

[0100] At this time, the sound-activated liquid-push spring 12 can drive the sound-activated component 6 to slide down relative to the sound-activated component limiting sleeve 7 until it collides with the first stop boss 801, and then enter the sound-activated descent state; this collision will produce the first sound, thus prompting the patient to officially begin the drug injection.

[0101] Next, the sounding spring 12 continues to drive the sounding component 6 to move downwards, which in turn drives the simulated pusher sleeve 8 to move downwards relative to the two sounding component limiting sleeve 10 and the simulated reservoir 5, thereby simulating the injection process in an injection pen where the pusher sleeve pushes the drug out of the reservoir.

[0102] Optionally, the improved double-sound injection training pen also includes a connecting rod 15 fixedly mounted at the bottom of the upper cover assembly 2 and a piston 16 fixedly mounted at the lower end of the connecting rod 15. The piston 16 is located inside the simulated injection sleeve 8 and can limit and guide the up and down movement of the simulated injection sleeve 8.

[0103] Understandably, since the injection pen generally contains medication, the downward speed of the injection pen's plunger is not too fast. Therefore, damping oil can be stored in the simulated injection sleeve 8 to provide a certain damping effect for the up and down movement of the simulated injection sleeve 8, so as to prevent the simulated injection sleeve 8 from descending too quickly, in order to achieve the purpose of closely resembling the real injection scenario.

[0104] (2) Regarding the second sound

[0105] See Figure 6 The inner wall of the two sound components 9 is provided with a two sound component locking block 901, and the two sound component limiting sleeve 10 is provided with a two sound sleeve longitudinal sliding groove 1002 for the two sound component locking block 901 to be inserted. The upper part of the groove wall on one side of the two sound sleeve longitudinal sliding groove 1002 is provided with a two sound sleeve stop plane 1003.

[0106] Two sound springs 13 are sleeved on the outside of the two sound component limiting sleeve 10; further, one end of the two sound springs 13 is fixed on the two sound component limiting sleeve 10, and the other end is fixed on the two sound components 9. Therefore, the two sound springs 13 can not only drive the two sound components 9 to slide up and down relative to the two sound component limiting sleeve 10, but also drive the two sound components 9 to rotate around the vertical axis relative to the two sound component limiting sleeve 10 to a certain extent.

[0107] The two-sound spring 13 is used to drive the two-sound component 9 to rotate in the forward direction relative to the two-sound component limiting sleeve 10 until the two-sound component locking block 901 is located above the two-sound sleeve stop plane 1003, so that the two-sound component 9 maintains the two-sound lifting state.

[0108] In this embodiment, the top of the two-sound component locking block 901 is provided with a two-sound guide slope 9011; correspondingly, the outer side of the one-sound component 6 is also provided with a one-sound component lower locking block 602 at a position lower than the one-sound component upper locking block 601.

[0109] When the first sounding component 6 slides down to the bottom of the simulated liquid storage cylinder 5, the lower locking block 602 of the first sounding component abuts against and moves relative to the second sounding component locking block 901's second sounding guide slope 9011. Under the guidance of the second sounding guide slope 9011, the second sounding component 9 rotates in the opposite direction relative to the second sounding component limiting sleeve 10 until the second sounding component locking block 901 disengages from the second sounding sleeve stop plane 1003. Under the squeezing action of the second sounding spring 13, the second sounding component locking block 901 inserts into the lower part of the second sounding sleeve longitudinal sliding groove 1002. Finally, the second sounding component 9 slides down relative to the second sounding component limiting sleeve 10 and hits the second stop boss 1001, emitting a second sound, and enters the second sounding descent state.

[0110] (3) Regarding reset

[0111] ①See Figure 7 A sliding sleeve spring 14 is provided between the simulated liquid storage cylinder 5 and the sliding sleeve 402 to drive the sliding sleeve assembly 4 to slide downward. After the outwardly protruding sliding sleeve 402 is released, the sliding sleeve spring 14 automatically drives the sliding sleeve assembly 4 to slide downward, thereby driving the sound component limiting sleeve 7 to move downward and disengage from the upper cover guide slope 201.

[0112] ②The lower cover assembly 3 includes a cover seat 301 covering the outer protruding end of the sliding sleeve assembly 4 and a reset push rod 302 fixed to the top of the cover seat 301; when the cover seat 301 covers the outer protruding end of the sliding sleeve 402, the reset push rod 302 pushes the simulated liquid sleeve 8 upward, thereby driving the sound-emitting element 6 to slide upward along the sound sleeve guide slope 703. At this time, the sound-emitting element limiting sleeve 7 will overcome the elastic force of the sound sleeve torsion spring 11 and vibrate until the sound-emitting element 6 moves to a position higher than the sound sleeve stop plane 702, and the sound-emitting element 6 can be reset to the sound-emitting lifting state.

[0113] (4) Regarding the limiting of the push cylinder limiting ring

[0114] See Figure 8 and Figure 9 In this embodiment, the external side of the simulated liquid-push sleeve is provided with a vertical sleeve boss 802;

[0115] A rotatable push cylinder limiting ring 17 and a limiting ring torsion spring 18 located between the two-sound component limiting sleeve 10 and the simulated liquid storage cylinder 5 are provided.

[0116] The pusher sleeve limiting ring 17 is used to restrict the downward sliding of the simulated pusher sleeve 8 before the sounding element 6 enters the sounding descent state; and is used to rotate to allow the simulated pusher sleeve 8 to pass through after the sounding element 6 enters the sounding descent state, so as to release the restriction on the downward sliding of the simulated pusher sleeve 8.

[0117] The improved dual-sound injection training pen provided in this embodiment has a rotatable push-tube limiting ring 17 at the bottom of the two-sound limiting sleeve 10. The push-tube limiting ring 17 can restrict the downward sliding of the simulated liquid-push sleeve 8 before the first sounding component 6 enters the first sound lowering state, thereby solving the problem that the simulated liquid-push sleeve of the existing dual-sound injection training pen tends to slide down prematurely, resulting in the inability to produce the first sound. After the first sounding component 6 enters the first sound lowering state, the push-tube limiting ring 17 rotates to allow the simulated liquid-push sleeve 8 to pass through, thereby releasing the restriction on the downward sliding of the simulated liquid-push sleeve 8 so as to produce the second sound.

[0118] Therefore, the improved double-sound injection training pen provided by this utility model can solve the problem that the simulated liquid-pushing sleeve of the existing double-sound injection training pen tends to slide down prematurely, thus failing to produce the first sound.

[0119] The inner side of the push cylinder limiting ring 17 is provided with a limiting baffle 1701 for restricting the downward sliding of the vertical sleeve boss 802, corresponding to the position of the vertical sleeve boss 802. The limiting baffle 1701 is provided with an avoidance notch 1702 for the vertical sleeve boss 802 to pass through. The outer side of the push cylinder limiting ring 17 is provided with a limiting ring guide boss 1703.

[0120] Accordingly, see Figure 10 The inner wall of the sliding sleeve 402 is provided with a limiting ring guide groove 4021 corresponding to the position of the limiting ring guide boss 1703; further, the lower width dimension of the limiting ring guide groove 4021 is smaller than the upper width dimension of the limiting ring guide groove 4021; specifically, the first sidewall on one side of the limiting ring guide groove 4021 is a vertical plane structure, and the second sidewall on the other side opposite to the first sidewall includes a first vertical sidewall 4021a located at the upper part, a second vertical sidewall 4021b located at the lower part, and an inclined transition sidewall 4021c connecting the first vertical sidewall 4021a and the second vertical sidewall 4021b;

[0121] One end of the limiting ring torsion spring 18 is fixedly connected to the two sound component limiting sleeve 10, and the other end is fixedly connected to the push cylinder limiting ring 17;

[0122] When the limiting ring guide boss 1703 is located at the lower part of the limiting ring guide groove 4021, the limiting ring torsion spring 18 drives the limiting ring guide boss 1703 to rotate to abut against the second vertical side wall 4021b. At this time, the clearance notch 1702 is misaligned with the vertical sleeve boss 802. Due to the blocking effect of the limiting baffle 1701, the simulated liquid pushing sleeve 8 cannot slide down to simulate the liquid pushing process.

[0123] When the limiting ring guide boss 1703 is located above the limiting ring guide groove 4021, the limiting ring torsion spring 18 drives the limiting ring guide boss 1703 to rotate to abut against the first vertical side wall 4021a. At this time, the clearance notch 1702 is aligned with the vertical sleeve boss 802. Under the driving action of the liquid pushing spring 12, the simulated liquid pushing sleeve 8 can slide down to imitate the liquid pushing process.

[0124] The improved dual-sound injection training pen provided in this embodiment has the following overall usage process:

[0125] S10: Remove the lower cover assembly 3, hold the pen body 1, make the protruding end of the sliding sleeve 402 fit against the injection site on the human body, and then press down firmly on the pen body 1.

[0126] It should be noted that before the pen body 1 is pressed down, the limiting ring guide protrusion 1703 is located at the lower part of the limiting ring guide groove 4021. Therefore, due to the blocking effect of the limiting baffle 1701, the simulated liquid injection sleeve 8 cannot slide down to simulate the liquid injection process. This can avoid the situation where the simulated liquid injection sleeve 8 automatically slides down due to gravity during storage and transportation, which would lead to the failure of the simulated injection in the later stage.

[0127] S20: As the pen body 1 moves downward, the sliding sleeve assembly 4 will drive the sound element limiting sleeve 7 to move upward relative to the pen body 1 until the top of the sound element limiting sleeve 7 abuts against the upper cover guide slope 201.

[0128] At this time, continue to press down on the pen body 1, and the sound component limiting sleeve 7 moves upward and rotates along the upper cover guide slope 201, thereby causing the sound component 6 to disengage from the sound sleeve stop plane 702.

[0129] It should be noted that when the sliding sleeve assembly 4 drives the sound component limiting sleeve 7 to move upward relative to the pen body 1, the limiting ring guide boss 1703 is located above the limiting ring guide groove 4021. After the blocking effect of the limiting baffle 1701 is released, the simulated liquid pushing sleeve 8 can slide downward to simulate the liquid pushing process.

[0130] S30: A sound is made and the liquid-push spring 12 drives the sound-making component 6 to move downwards until it hits the first stop boss 801, making the first sound. This means that at this moment, the simulation of drug injection officially begins.

[0131] S40: In the following period of time (e.g., 3s, 5s or 8s), a sound is heard and the liquid-pushing spring 12 drives the simulated liquid-pushing sleeve 8 to gradually insert into the simulated liquid reservoir 5 through the sound-sounding component 6, thereby simulating the liquid-pushing process of the injection pen.

[0132] S50: When the simulated liquid-pushing sleeve 8 is inserted to a position close to the bottom of the simulated liquid storage cylinder 5, the first sounding component 601 on the first sounding component 6 abuts against the second sounding component 901 on the second sounding component 9, and overcomes the elastic force of the second sounding spring 13, causing the second sounding component 9 to rotate relative to the second sounding component limiting sleeve 10.

[0133] When the second sounding component 9 rotates to disengage from the second sounding sleeve stop plane 1003, the second sounding spring 13 drives the second sounding component 9 to slide downward relative to the second sounding component limit sleeve 10 until it hits the second stop boss 1001 and makes a second sound. This means that at this moment, the simulation of drug injection officially ends.

[0134] S60: After hearing the second sound, pick up the pen body 1. The sliding spring 14 drives the sliding assembly 4 and the sound element limit sleeve 7 to slide down and reset automatically.

[0135] It should be noted that at this point, the simulated pusher sleeve 8 is already in a low position and cannot reset itself.

[0136] S70: The upper and lower cover assembly 3 is fitted, and the reset push rod 302 lifts the simulated liquid sleeve 8 upward, so that the sound-emitting element 6 slides upward along the sound sleeve guide slope 703 until the sound-emitting element 6 is reset to the sound-emitting lifted state, thereby completing the entire use process.

[0137] The improved dual-sound injection training pen provided in this embodiment has the following advantages:

[0138] ① There are sound reminders at the two key time points of starting and ending drug injection, which makes it easier for patients to know the progress of the simulation and improves the user experience;

[0139] ② The lower cover assembly 3 is required to complete the repositioning of the simulated liquid sleeve 8, so that the patient can complete the simulation of the entire usage process from opening to closing the cover each time they perform simulation training.

[0140] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0141] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An improved dual-sound injection training pen, comprising a sounding component (6), a sounding component limiting sleeve (7) rotatably sleeved outside the sounding component (6), a liquid-propelling sleeve (8) having a first stop boss (801), a second sounding component (9) located below the sounding component limiting sleeve (7), and a second sounding component limiting sleeve (10) rotatably sleeved outside the second sounding component (9) and having a second stop boss (1001): in, The sound-making component (6) has a sound-making lifting state in which it is limited by the sound-making component limiting sleeve (7) and moves upward away from the first stop boss (801), and a sound-making lowering state in which it is driven downward and strikes the first stop boss (801) and emits the first sound. The two-sound component (9) has a two-sound lifting state in which it is limited by the two-sound component limiting sleeve (10) and moves upward away from the second stop boss (1001), and a two-sound descending state in which it is triggered by the one-sound component (6), and after being driven, it strikes the second stop boss (1001) downward and emits a second sound. Its characteristic is that it further includes: A push cylinder limiting ring (17) is rotatably mounted below the two sound component limiting sleeve (10) to restrict the downward sliding of the simulated push liquid sleeve (8) before the sound component (6) enters the sound descent state; and to rotate to allow the simulated push liquid sleeve (8) to pass through after the sound component (6) enters the sound descent state, so as to release the restriction on the downward sliding of the simulated push liquid sleeve (8).

2. The improved dual-sound injection training pen according to claim 1, characterized in that, The exterior of the simulated liquid-push sleeve (8) is provided with a vertical sleeve boss (802). The inner side of the push cylinder limiting ring (17) is provided with a limiting baffle (1701) corresponding to the position of the vertical sleeve boss (802) to restrict the vertical sleeve boss (802) from sliding downward. The limiting baffle (1701) is provided with an avoidance notch (1702) for the vertical sleeve boss (802) to pass through.

3. The improved dual-sound injection training pen according to claim 2, characterized in that, Also includes: The sliding sleeve assembly (4) includes an upper sliding sleeve (401) that is rotatably connected to and snapped into the sound component limiting sleeve (7), and a lower sliding sleeve (402) that is fixedly snapped into the upper sliding sleeve (401). The pen body (1) has a receiving cavity (101) with openings at both the top and bottom ends; the sliding sleeve assembly (4) is slidably disposed in the receiving cavity (101), with its upper end rotatably connected and snapped to the sound component limiting sleeve (7), and its lower end extending to the outside of the lower opening of the receiving cavity (101); The simulated liquid storage cylinder (5) is fixedly disposed below the two-part limiting sleeve (10) relative to the pen body (1) so that the simulated liquid push sleeve (8) can be inserted and pulled out; wherein, a sliding sleeve spring (14) is provided between the simulated liquid storage cylinder (5) and the sliding sleeve (402). The upper cover assembly (2) covers the upper opening of the accommodating cavity (101).

4. The improved dual-sound injection training pen according to claim 3, characterized in that, The outer side of the push cylinder limiting ring (17) is provided with a limiting ring guide boss (1703). The inner wall of the sliding sleeve (402) is provided with a limiting ring guide groove (4021) corresponding to the position of the limiting ring guide boss (1703); the lower width dimension of the limiting ring guide groove (4021) is smaller than the upper width dimension of the limiting ring guide groove (4021).

5. The improved dual-sound injection training pen according to claim 4, characterized in that, The first sidewall of the limiting ring guide groove (4021) is a vertical planar structure, and the second sidewall on the other side opposite to the first sidewall includes a first vertical sidewall (4021a) located at the top, a second vertical sidewall (4021b) located at the bottom, and an inclined transition sidewall (4021c) connecting the first vertical sidewall (4021a) and the second vertical sidewall (4021b).

6. The improved dual-sound injection training pen according to claim 5, characterized in that, Also includes: A limiting ring torsion spring (18) is located between the push cylinder limiting ring (17) and the two-sound component limiting sleeve (10). One end of the limiting ring torsion spring (18) is fixedly connected to the two-sound component limiting sleeve (10), and the other end is fixedly connected to the push cylinder limiting ring (17). Wherein, the limiting ring torsion spring (18) is used to drive the limiting ring guide boss (1703) to always abut against the second sidewall, so that: When the limiting ring guide boss (1703) is located at the lower part of the limiting ring guide groove (4021), the clearance notch (1702) is misaligned with the vertical sleeve boss (802); When the limiting ring guide boss (1703) is located above the limiting ring guide groove (4021), the clearance notch (1702) is aligned with the vertical sleeve boss (802).

7. The improved dual-sound injection training pen according to claim 6, characterized in that, The outer side of the sound-emitting component (6) is provided with a sound-emitting component upper locking block (601); The sound component limiting sleeve (7) is provided with a sound component upper locking block (601) passing through a sound component longitudinal sliding groove (701), wherein the groove wall on one side of the sound component longitudinal sliding groove (701) is provided with a sound component stop plane (702) and a sound component guide slope (703) located below the sound component stop plane (702). The outer side of the acoustic component limiting sleeve (7) is fitted with an acoustic sleeve torsion spring (11). The torsion spring (11) is used to drive the limiting sleeve (7) of the sound component to rotate in the forward direction relative to the sound component (6) until the stopping plane (702) of the sound component is located below the locking block (601) on the sound component, so that the sound component (6) maintains the sound lifting state.

8. The improved dual-sound injection training pen according to claim 7, characterized in that, The upper cover assembly (2) is provided with an upper cover guide slope (201); The upper cover guide slope (201) is used to make the sound element limiting sleeve (7) rotate in the opposite direction relative to the sound element (6) until the sound element (6) is separated from the sound sleeve stop plane (702). A sound-emitting and hydraulic spring (12) is provided above the sound-emitting component (6).

9. The improved dual-sound injection training pen according to claim 7, characterized in that, The inner wall of the two sound-emitting component (9) is provided with a two sound-emitting component locking block (901); The two-sound component limiting sleeve (10) is provided with a two-sound component longitudinal sliding groove (1002) for the two-sound component locking block (901) to be inserted, wherein the upper part of the groove wall on one side of the two-sound component longitudinal sliding groove (1002) is provided with a two-sound component stop plane (1003). Two sound springs (13) are sleeved on the outside of the two sound component limiting sleeve (10). The two-sound spring (13) is used to drive the two-sound component (9) to rotate in the positive direction relative to the two-sound component limiting sleeve (10) until the two-sound component locking block (901) is located above the two-sound sleeve stop plane (1003), so that the two-sound component (9) maintains the two-sound lifting state. The bottom of the acoustic component upper block (601) and / or the top of the dual acoustic component block (901) are provided with dual acoustic guide slopes (9011). When the first sounding component (6) slides down to the bottom of the simulated liquid storage cylinder (5), the bottom of the first sounding component's upper locking block (601) abuts against and slides relative to the top of the second sounding component's locking block (901). Under the action of the second sounding guide inclined surface (9011), the second sounding component (9) rotates in the opposite direction relative to the second sounding component's limiting sleeve (10) until the second sounding component's locking block (901) disengages from the second sounding sleeve's stop plane (1003). Under the squeezing action of the second sounding spring (13), the second sounding component's locking block (901) inserts into the lower part of the second sounding sleeve's longitudinal sliding groove (1002), causing the second sounding component (9) to enter the second sounding descent state.

10. The improved dual-sound injection training pen according to claim 7, characterized in that, It also includes a lower cover assembly (3) for sealing the lower opening of the accommodating cavity (101). The lower cover assembly (3) includes a cover seat (301) covering the sliding sleeve assembly (4) and a reset push rod (302) fixed to the top of the cover seat (301). The reset push rod (302) is used to lift the simulated push liquid sleeve (8) upward, so that the sound-making element (6) slides upward along the sound sleeve guide slope (703) until the sound-making element (6) is reset to the sound-making lifted state.

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