A convenient, modular, energy-storage-based automatic injection device for assembling pharmaceuticals and medical devices.

Abstract

This invention relates to the field of injection devices, specifically a convenient, modular, energy-storing automatic injection device, comprising a drug cartridge assembly, an energy storage assembly, and a drug vial. The drug vial holder in the drug cartridge assembly is housed within the drug cartridge shell, with the top of the drug vial inserted into the holder. A concealed needle assembly is slidably connected within the drug cartridge shell. The drug delivery assembly in the energy storage assembly is snapped into place inside the upper shell with an energy storage switch sleeve. The drug cartridge assembly and the energy storage assembly are connected via a snap-fit ​​assembly. Upon completion of installation, the output end of the drug delivery assembly abuts against the plunger of the drug vial, and the concealed needle assembly abuts against the energy storage switch sleeve. Before the concealed needle assembly is compressed, it obstructs the needle tip, and the energy storage switch sleeve restricts the drug delivery assembly's liquid-push operation. The drug cartridge assembly and the energy storage assembly are modular, allowing for initial assembly at the medical device manufacturing plant, followed by drug vial assembly at the pharmaceutical factory. The final assembly is then completed via quick-release snap-fit, enabling convenient and rapid completion of the final assembly process.

Description

Technical Field

[0001] This invention relates to the field of injection device technology, specifically to a convenient, modular, energy-storing automatic injection device for assembling pharmaceuticals and medical devices. Background Technology

[0002] Disposable pre-filled syringe vials are currently the most commonly used packaging material for medical syringes, typically used in mechanical injection pens. In application scenarios, to achieve rapid, efficient, and stable injection, mechanical, energy-storage, and automated injection devices have been developed, enabling efficient, safe, and convenient self-administration.

[0003] However, the production of the initial assembly of existing injection devices and the final assembly of the drug are often completed on two different production lines. This is because the final drug assembly is usually carried out in the pharmaceutical factory, while the initial assembly is completed in the medical device manufacturing plant. This presents a great challenge, requiring improvements in the convenience, efficiency, and success rate of the final assembly in the pharmaceutical factory.

[0004] Therefore, there is an urgent need for a convenient, modular, energy-storage-based automatic injection device for assembling pharmaceuticals and medical devices. Summary of the Invention

[0005] To overcome the problems existing in the prior art, the present invention aims to provide a convenient modular energy storage automatic injection device for assembling medicine bottles, which facilitates the assembly of medicine bottles and enables users to safely and conveniently complete self-administration injection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a convenient modular automatic injection device for assembling medicine and medical devices, comprising a medicine container assembly, an energy storage assembly, and a medicine bottle;

[0007] The drug reservoir assembly includes a drug reservoir shell, a concealed needle assembly, and a drug bottle support. The drug bottle support is disposed inside the drug reservoir shell, and the top of the drug bottle is inserted into the drug bottle support. The concealed needle assembly is slidably connected inside the drug reservoir shell. The energy storage assembly includes an upper shell, an energy storage switch sleeve, and a drug delivery assembly. The drug delivery assembly is snapped into the energy storage switch sleeve and disposed inside the upper shell. The top of the drug bottle is provided with a needle, and the tail end of the drug bottle is provided with a plunger.

[0008] The drug reservoir assembly and the energy storage assembly are connected by a snap-fit ​​assembly on the outer wall of the drug reservoir shell and the upper shell. After the drug reservoir assembly and the energy storage assembly are installed, the output end of the drug delivery assembly abuts against the plunger at the tail end of the drug bottle, and the hidden needle assembly abuts against the energy storage switch sleeve. Before the hidden needle assembly is compressed, the hidden needle assembly blocks the needle tip, and the energy storage switch sleeve restricts the drug delivery assembly from performing liquid pushing operation.

[0009] In the above structure, the medicine container assembly and the energy storage assembly are separate structures. The medicine bottle is the final assembly part of the medicine container assembly. The assembly of the medicine container assembly and the energy storage assembly are completed in the medical device manufacturing plant. After the medicine bottle assembly is completed in the pharmaceutical plant, the medicine container assembly and the energy storage assembly are fastened to the energy storage assembly through quick-release buckles set on the medicine container assembly to complete the final assembly of the finished product. This allows the final assembly process to be completed conveniently and quickly.

[0010] Furthermore, during the injection process, the hidden needle assembly is pushed out of the needle, which simultaneously causes the energy storage switch sleeve to separate from the drug delivery assembly. The drug delivery assembly then begins to move based on the stored energy, pushing the plunger to complete the automatic injection.

[0011] The present invention is further configured such that: the buckle assembly includes a buckle and a buckle groove; a connecting arm is provided on the medicine compartment shell, and the buckle is disposed on the outer wall of the connecting arm; the outer wall of the upper shell is provided with a buckle groove that cooperates with the buckle, and the connecting arm extends into the interior of the upper shell until the buckle engages with the buckle groove.

[0012] The above structure enables the rapid installation of the medicine container and energy storage components after the medicine bottle is installed.

[0013] The present invention is further configured such that: the concealed needle assembly includes a concealed needle sleeve and a limiting ring, the concealed needle sleeve is slidably connected between the medicine bottle support and the medicine container shell, the concealed needle sleeve is provided with a placement groove, the limiting ring is provided in the placement groove, the limiting ring can rotate circumferentially in the placement groove but cannot move axially; the inner wall of the limiting ring is provided with a sliding protrusion.

[0014] The outer wall of the medicine bottle holder is provided with a sliding track, which includes an ascending track and a descending track, and the top ends of the ascending track and the descending track merge into a switching track; the sliding convex slidably connects to the ascending track or the descending track. As the hidden needle sleeve is compressed or released, the sliding convex slid along the sliding track to allow the needle inside the medicine container to be exposed or blocked.

[0015] Specifically, before the concealed needle sleeve is compressed, the sliding protrusion is disposed within the ascending track, and the concealed needle sleeve covers the needle inside the drug cartridge assembly; when the concealed needle sleeve is compressed, the concealed needle sleeve drives the sliding protrusion to move along the ascending track to the switching track. At this time, the needle is exposed for injection. After the injection is completed, the concealed needle sleeve is reset, slides from the switching track to the end of the descending track and locks, at which time the needle is covered inside the concealed needle sleeve. The above structure achieves needle puncture protection.

[0016] The present invention is further configured such that: one end of the concealed needle sleeve is provided with a top rod, and the top rod of the concealed needle sleeve extends into the upper shell and abuts against the energy storage switch sleeve;

[0017] The push rod protrudes radially from the concealed needle sleeve, and the inner wall of the medicine container shell is provided with a concealed needle sleeve sliding track, and a lower limit surface is provided below the concealed needle sleeve sliding track; the push rod is disposed on the concealed needle sleeve sliding track, and when the bottom of the push rod abuts against the lower limit surface, the concealed needle sleeve extends out of the medicine container shell.

[0018] During injection, the concealed needle sheath compresses into the interior of the conveniently assembled, separate-type energy storage automatic injection device, thereby moving the energy storage switch sleeve and separating it from the drug delivery component. The concealed needle sheath's movement is restricted to axial direction via a sliding track, and it is fixed by a lower limiting surface, ensuring that the sheath encloses the needle tip while preventing it from detaching from the device.

[0019] The present invention is further configured such that: the drug delivery component includes a drive rod, a push rod, and a torsion spring; the drive rod is hollow inside, and the push rod is disposed inside the drive rod as the output end of the drug delivery component;

[0020] The energy storage component also includes a top cover, which is connected to one end of the upper shell. The top cover is provided with a fixing groove on a torsion spring and an insertion pin on a drive rod.

[0021] The upper end of the drive rod is connected to the upper insertion pin of the drive rod, and the outer wall of the lower end of the drive rod is provided with multiple meshing teeth. The inner wall of the energy storage switch sleeve is provided with multiple limiting ribs. The lower end of the drive rod is also provided with a lower fixing groove for the torsion spring. One end of the torsion spring is connected to the upper fixing groove for the torsion spring, and the other end is connected to the lower fixing groove for the torsion spring.

[0022] Before the hidden needle sleeve is compressed, each of the limiting ribs extends between the two meshing teeth to restrict the rotation of the drive rod, thereby restricting the torsion spring from driving the push rod inside the drive rod to rotate for liquid pushing operation.

[0023] The above structure stores energy through a torsion spring. In the initial state, the drive rod is engaged with the energy storage switch sleeve. The rotation of the drive rod is restricted by the limiting rib of the energy storage switch sleeve, which in turn restricts the torsion spring to lock the energy storage. When the limiting rib of the energy storage switch sleeve separates from the meshing teeth on the drive rod, the drive rod rotates under the action of the torsion spring, which in turn drives the push rod inside to rotate.

[0024] The present invention is further configured such that: the energy storage switch sleeve includes a sliding arm, the inner wall of the upper shell is provided with a vertical limiting sliding groove, the sliding arm is engaged with the limiting sliding groove, and moves along the limiting sliding groove.

[0025] The rotational movement of the energy storage switch sleeve is restricted by the vertical limiting sliding groove, so that it can only slide axially.

[0026] The present invention is further configured such that: the inner wall of the drive rod is provided with an engaging protrusion, and the outer wall of the push rod is provided with a push rod thread and an engaging groove that mates with the engaging protrusion;

[0027] A fixing plate is provided at one end of the upper shell away from the top cover. A threaded through hole is provided on the fixing plate. One end of the push rod is connected to the meshing protrusion in the drive rod through a meshing groove, and the other end passes through the threaded through hole and abuts against the plunger.

[0028] The push rod is threadedly connected to the fixed plate. The drive rod rotates the push rod under the action of the torsion spring, so that the push rod moves axially relative to the fixed plate, thereby pushing the plunger to inject.

[0029] The present invention is further configured such that: the fixing plate is provided with a plurality of sound-emitting ribs along the circumference, and the bottom of the driving rod is provided with a sound-emitting paddle, the sound-emitting paddle being in contact with the sound-emitting ribs.

[0030] During the rotation of the drive rod, the sound-producing paddle rotates and strikes the sound-producing ribs. After the sound-producing paddle deforms elastically, it strikes the ribs that are evenly distributed around the circumference, producing a "tap tap tap" injection prompt sound and vibration feedback throughout the injection process, indicating to the user that the injection is in progress. The injection is complete when the injection prompt sound and vibration feedback stop.

[0031] The present invention is further configured such that: a first insertion groove is provided on the outer side of the fixing plate, and the connecting arm extends through the first insertion groove into the interior of the upper shell until the fastening buckle engages with the fastening groove.

[0032] The present invention is further configured such that: a second insertion groove is provided on the outer side of the fixing plate, and the top rod passes through the second insertion groove and abuts against the energy storage switch sleeve.

[0033] The present invention is further configured such that a compression spring is provided between the energy storage switch sleeve and the top cover.

[0034] The compression spring is used to provide the reset power for the hidden needle assembly. When the hidden needle sleeve is compressed in contact with the skin, the energy storage switch sleeve compresses the compression spring. When the hidden needle sleeve moves away from the skin, the compression spring resets and provides thrust, pushing the energy storage switch sleeve to reset, and simultaneously pushing the hidden needle sleeve to reset.

[0035] The present invention is further configured such that: the inner wall of the medicine container shell is provided with a medicine bottle support fixing groove, the medicine bottle support includes a medicine bottle receiving cavity, a support fixing buckle is provided at the entrance of the medicine bottle receiving cavity, the support fixing buckle is engaged with the medicine bottle support fixing groove, and the medicine bottle is disposed in the medicine bottle receiving cavity.

[0036] The present invention is further configured such that: a first injection observation window is provided on the drug container shell, and a second injection observation window is provided on the hidden needle sleeve, the position of the second injection observation window corresponding to the position of the first injection observation window.

[0037] The state of the medicine bottle inside the medicine container can be directly observed through the first and second injection observation windows.

[0038] The present invention is further configured such that: the outer wall of the medicine tank shell away from the end of the energy storage component is provided with a fastening protrusion, and the medicine tank component also includes an installation cap, wherein the fastening protrusion is engaged with the side wall of the safety cap.

[0039] When the buckle protrusion is engaged with the safety helmet, the helmet cover should be installed on the outside of the concealed needle sleeve that extends out of the medicine tank shell to avoid accidental contact with the concealed needle sleeve.

[0040] In summary, the beneficial effects of the above-mentioned technical solution of the present invention are as follows:

[0041] 1. This invention provides a split-type energy storage automatic injection device. The drug container assembly and the energy storage assembly are separate structures. The medicine bottle is the final assembly part of the drug container assembly. The drug container assembly and the energy storage assembly are assembled separately in the medical device manufacturing plant. After the medicine bottle assembly is completed in the pharmaceutical plant, the drug container assembly and the energy storage assembly are fastened to the energy storage assembly through quick-release buckles set on the drug container assembly to complete the final assembly of the finished product. This allows the final assembly process to be completed conveniently and quickly.

[0042] 2. The concealed needle assembly and energy storage assembly of this invention work together to achieve the concealed needle anti-puncture protection function. Before injection, the concealed needle sheath moves along the ascending track to perform the injection operation. The concealed needle sheath always covers the needle tip, which can alleviate the user's fear of needles. After injection, during the resetting process of the concealed needle sheath, the concealed needle sheath moves along the descending track. After the concealed needle sheath moves to the end of the descending track, it is restricted from further movement and locked. This is an irreversible action, which effectively prevents the drug cartridge from being reused and also avoids needle contamination, thus effectively providing anti-puncture protection. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0045] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of the present invention;

[0046] Figure 3 This is an exploded view of the present invention;

[0047] Figure 4 This is a schematic diagram of the shell structure of the medicine storage container;

[0048] Figure 5 This is a cross-sectional view of the medicine storage shell;

[0049] Figure 6 This is a schematic diagram of a medicine bottle support structure;

[0050] Figure 7 This is a schematic diagram of the hidden needle sleeve structure;

[0051] Figure 8 This is a schematic diagram of the limiting ring structure;

[0052] Figure 9 Cross-sectional views of the internal structure of the upper shell in two directions;

[0053] Figure 10 This is a top view of the upper shell;

[0054] Figure 11 This is a schematic diagram of the top cover structure;

[0055] Figure 12 This is a schematic diagram of the drive rod structure;

[0056] Figure 13 Top view of the drive lever;

[0057] Figure 14 This is a schematic diagram of the energy storage switchgear structure;

[0058] Figure 15 This is a schematic diagram of the push rod structure;

[0059] Figure 16 This is a schematic diagram of the structure of the hidden needle sleeve in its compressed state;

[0060] Figure 17 A schematic diagram of the structure with the hidden needle sheath compressed and injection completed;

[0061] Figure 18 A cross-sectional view of the state after the hidden needle sleeve has been reset upon completion of the injection.

[0062] Figure 19 This is a cross-sectional view of the sliding convex hull position of the hidden needle sleeve in the pre-compression state;

[0063] Figure 20 It is a cross-sectional view of the sliding convex hull position of the hidden needle sleeve in the compressed state;

[0064] Figure 21 This is a cross-sectional view of the sliding convex hull position of the hidden needle sleeve in the reset state.

[0065] In the attached figures, the meanings of the various reference numerals are as follows:

[0066] 1. Safety helmet; 2. Concealed needle sleeve; 2-1. Second injection observation window; 2-2. Placement slot; 2-3. Top rod;

[0067] 3. Limiting ring; 3-1. Sliding convex hull;

[0068] 4. Medicine bottle holder; 4-1. Ascending track; 4-2. Descending track; 4-3. Holder fixing buckle; 4-4. Medicine bottle receiving cavity;

[0069] 5. Medicine chamber shell; 5-1. Fastening protrusion; 5-2. First injection observation window; 5-3. Fastening buckle; 5-4. Medicine bottle support fixing groove; 5-5. Hidden needle sleeve sliding track; 5-6. Lower limit surface.

[0070] 6. Upper shell; 6-1. Threaded through hole; 6-2. Sound-emitting rib; 6-3. First insertion groove; 6-4. Second insertion groove; 6-5. Limiting sliding groove; 6-6. Fastening groove; 6-7. Top cover fastening groove; 6-8. Medicine compartment insertion guide wall;

[0071] 7. Top cover; 7-1. Fixing groove on torsion spring; 7-2. Top cover fastening buckle; 7-3. Insertion pin on drive rod; 7-4. Fixing end face on compression spring.

[0072] 8. Drive rod; 8-1. Engaging teeth; 8-2. Sound-producing paddle; 8-3. Engaging convex bulge; 8-4. Lower fixing groove of torsion spring;

[0073] 9. Energy storage switch sleeve; 9-1. Limiting rib; 9-2. Sliding arm;

[0074] 10. Push rod; 10-1. Engaging groove; 10-2. Push rod sleeve limiting groove; 10-3. Push rod thread; 11. Torsion spring; 12. Push rod cap; 13. Medicine bottle; 14. Compression spring. Detailed Implementation

[0075] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of the present invention, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of the present invention.

[0076] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0077] Example

[0078] like Figures 1-21 As shown, this is a preferred embodiment of the present invention, a convenient drug and medical device assembly split-type energy storage automatic injection device, including a drug compartment assembly, an energy storage assembly and a drug bottle 13;

[0079] like Figures 1-3As shown, the top of the medicine bottle 13 is provided with a needle, and the tail end of the medicine bottle 13 is provided with a plunger; the medicine container assembly includes a medicine container shell 5, a hidden needle assembly, and a medicine bottle support 4. The medicine bottle support 4 is disposed inside the medicine container shell 5, and the top of the medicine bottle 13 is inserted into the medicine bottle support 4. The hidden needle assembly is slidably connected between the medicine container shell 5 and the medicine bottle support 4; the energy storage assembly includes an upper shell 6, an energy storage switch sleeve 9, and a drug delivery assembly. The drug delivery assembly is snapped into the energy storage switch sleeve 9 and is disposed inside the upper shell 6.

[0080] The drug reservoir assembly and the energy storage assembly are connected by a snap-fit ​​assembly on the outer wall of the drug reservoir shell 5 and the upper shell 6. After the drug reservoir assembly and the energy storage assembly are installed, the output end of the drug delivery assembly abuts against the plunger at the tail end of the drug bottle 13, and the hidden needle assembly abuts against the energy storage switch sleeve 9. Before the hidden needle assembly is compressed, the hidden needle assembly blocks the needle tip, and the energy storage switch sleeve 9 restricts the drug delivery assembly from performing liquid pushing operation.

[0081] The drug container assembly and the energy storage assembly are separate structures. The medicine bottle 13 is the final assembly part of the drug container assembly. This invention allows for the initial assembly of the drug container assembly and the energy storage assembly to be completed at the medical device manufacturing plant. After the medicine bottle assembly is completed at the pharmaceutical factory, the drug container assembly and the energy storage assembly are fastened together using quick-release clips on the drug container assembly, thus completing the final assembly process quickly and easily. Furthermore, during injection, as the hidden needle assembly is pushed to expose the needle tip, the energy storage switch sleeve 9 separates from the drug delivery assembly. The drug delivery assembly then begins to move based on the stored energy, pushing the plunger to complete the automatic injection.

[0082] Combination Figure 4 , Figure 5 , Figure 9 As shown in the figure, Figure 9 Figure (b) is a sectional view of the upper shell from the main view direction. Figure 9 Figure (a) is a sectional view of the upper shell from a side view. The outer wall of the medicine tank shell 5, away from the energy storage component, is also provided with a fastening protrusion 5-1. The medicine tank assembly also includes a mounting cap 1. The fastening protrusion 5-1 engages with the side wall of the safety cap 1. When the fastening protrusion 5-1 engages with the safety cap 1, the mounting cap 1 is fitted over the outside of the concealed needle sleeve 2 extending from the medicine tank shell 5, preventing accidental contact with the concealed needle sleeve 2.

[0083] The snap-fit ​​assembly includes a snap-fit ​​buckle 5-3 and a snap-fit ​​groove; a connecting arm is provided on the medicine tank shell 5, and the snap-fit ​​buckle 5-3 is provided on the outer wall of the connecting arm; the outer wall of the upper shell 6 is provided with a snap-fit ​​groove 6-6 that cooperates with the snap-fit ​​buckle 5-3, and the connecting arm extends into the interior of the upper shell 6 until the snap-fit ​​buckle 5-3 engages with the snap-fit ​​groove 6-6, thereby realizing the rapid installation of the medicine tank assembly and the energy storage assembly.

[0084] Combined Figure 7 , Figure 8 As shown, the concealed needle assembly includes a concealed needle sleeve 2 and a limiting ring 3. The concealed needle sleeve 2 is slidably sleeved between the medicine bottle support 4 and the medicine container shell 5. The concealed needle sleeve 2 is provided with a placement groove 2-2. The limiting ring 3 is provided in the placement groove 2-2. The limiting ring 3 can rotate circumferentially within the placement groove 2-2 but cannot move axially. The inner wall of the limiting ring 3 is provided with a sliding protrusion 3-1.

[0085] The outer wall of the medicine bottle holder 4 is provided with a sliding track, which includes an ascending track 4-1 and a descending track 4-2, and the top ends of the ascending track 4-1 and the descending track 4-2 merge into a switching track; the sliding convex 3-1 is slidably connected in the ascending track 4-1 or the descending track 4-2. As the hidden needle sleeve 2 is compressed or released, the sliding convex 3-1 moves along the sliding track to realize the leakage or obstruction of the needle inside the medicine container assembly.

[0086] Combination Figure 16 As shown, a compression spring 14 is provided between the energy storage switch sleeve 9 and the top cover 7. The compression spring 14 is used to provide the reset power for the hidden needle assembly. When the hidden needle sleeve 2 is compressed in contact with the skin, the energy storage switch sleeve 9 compresses the compression spring 14. When the hidden needle sleeve 2 moves away from the skin, the compression spring 14 resets and provides a thrust, pushing the energy storage switch sleeve 9 to reset, and simultaneously pushing the hidden needle sleeve 2 to reset.

[0087] like Figures 4-9 As shown, one end of the concealed needle sleeve 2 is also provided with a push rod 2-3. The push rod 2-3 protrudes radially from the concealed needle sleeve 2 and extends into the upper shell 6 to abut against the energy storage switch sleeve 9.

[0088] The inner wall of the medicine container shell 5 is provided with a hidden needle sleeve sliding track 5-5, and a lower limit surface 5-6 is provided below the hidden needle sleeve sliding track 5-5; the push rod 2-3 is disposed in the hidden needle sleeve sliding track 5-5, and when the bottom of the push rod 2-3 abuts against the lower limit surface 5-6, the hidden needle sleeve 2 extends out of the medicine container shell 5.

[0089] During injection, the concealed needle sleeve 2 compresses into the interior of the convenient drug-device assembly split-type energy storage automatic injection device, thereby driving the energy storage switch sleeve 9 to move and separate the energy storage switch sleeve 9 from the drug delivery component. The concealed needle sleeve sliding track 5-5 restricts its movement to only axial direction, and the concealed needle sleeve 2 is fixed by the lower limiting surface 5-6, so that the concealed needle sleeve 2 covers the needle tip while preventing the concealed needle sleeve 2 from detaching from the device.

[0090] Combination Figure 3 , Figure 9 , Figures 11-15As shown, the drug delivery assembly includes a drive rod 8, a push rod 10, and a torsion spring 11; the drive rod 8 is hollow inside, and the push rod 10 is disposed inside the drive rod 8 as the output end of the drug delivery assembly;

[0091] The energy storage component also includes a top cover 7, which is provided with a torsion spring fixing groove 7-1, a top cover fastening buckle 7-2 and a drive rod insertion pin 7-3; one end of the upper shell 6 is also provided with a top cover fastening groove 6-7, and the top cover 7 is connected to the top cover fastening groove 6-7 through the top cover fastening buckle 7-2.

[0092] The upper end of the drive rod 8 is connected to the insertion pin 7-3 on the drive rod, and the outer wall of the lower end of the drive rod 8 is provided with a plurality of meshing teeth 8-1, and the inner wall of the energy storage switch sleeve 9 is provided with a plurality of limiting ribs 9-1.

[0093] The lower end of the drive rod 8 is also provided with a torsion spring lower fixing groove 8-4. One end of the torsion spring 11 is connected to the torsion spring upper fixing groove 7-1, and the other end is connected to the torsion spring lower fixing groove 8-4.

[0094] Before the hidden needle sleeve 2 is compressed, each of the limiting ribs 9-1 extends between the two meshing teeth 8-1 to restrict the rotation of the drive rod 8, thereby restricting the torsion spring 11 from driving the push rod 10 inside the drive rod 8 to rotate for liquid pushing operation.

[0095] The above structure stores energy through a torsion spring 11. In the initial state, the drive rod 8 is engaged with the energy storage switch sleeve 9. The rotation of the drive rod 8 is restricted by the limiting rib 9-1 of the energy storage switch sleeve 9, thereby restricting the torsion spring 11 to achieve energy storage locking. When the limiting rib 9-1 of the energy storage switch sleeve 9 is separated from the meshing tooth 8-1, the drive rod 8 rotates under the action of the torsion spring 11, thereby driving the push rod 10 inside it to rotate.

[0096] like Figure 17 As shown, a push rod cover 12 can also be provided at the contact end between the push rod 10 and the plunger. The push rod cover 12 is connected to the push rod 10 through the push rod sleeve limiting groove 10-2.

[0097] Combination Figure 3 , Figures 9-15 As shown, the energy storage switch sleeve 9 includes a sliding arm 9-2, and the inner wall of the upper shell 6 is provided with a vertical limiting sliding groove 6-5. The sliding arm 9-2 is engaged with the limiting sliding groove 6-5 and moves along the limiting sliding groove 6-5.

[0098] The inner wall of the drive rod 8 is provided with a meshing protrusion 8-3, and the outer wall of the push rod 10 is provided with a push rod thread 10-3 and a meshing groove 10-1 that mates with the meshing protrusion 8-3.

[0099] A fixing plate is provided at one end of the upper shell 6 away from the top cover 7. A threaded through hole 6-1 is provided on the fixing plate. One end of the push rod 10 is connected to the meshing protrusion 8-3 in the drive rod 8 through the meshing groove 10-1, and the other end passes through the threaded through hole 6-1 and abuts against the plunger.

[0100] Drive rod 8 drives push rod 10 to rotate under the action of torsion spring 11, so that push rod 10 moves axially relative to fixed plate, thereby pushing plunger to inject.

[0101] The fixing plate is provided with a plurality of sound-emitting ribs 6-2 along the circumference, and the bottom of the drive rod 8 is provided with a sound-emitting paddle 8-2, which contacts the sound-emitting ribs 6-2.

[0102] During the rotation of the drive rod, the sound-emitting paddle 8-2 rotates and strikes the sound-emitting rib 6-2. After the sound-emitting paddle 8-2 is elastically deformed, it strikes the subsequent circumferentially distributed sound-emitting ribs 6-2 again, so that the entire injection process produces a "tap tap tap" injection prompt sound and vibration feedback to indicate to the user that the injection is in progress. When the injection prompt sound and vibration feedback stop, the injection is complete.

[0103] Combination Figures 4-7 , Figures 9-10 As shown, the outer side of the fixing plate is provided with a first insertion groove 6-3, and the bottom of the upper shell 6 is provided with a medicine chamber insertion guide wall 6-8. The connecting arm extends into the upper shell 6 through the first insertion groove 6-3 along the medicine chamber insertion guide wall 6-8 until the fastening buckle 5-3 engages with the fastening groove 6-6.

[0104] The outer side of the fixing plate is also provided with a second insertion slot 6-4, and the top rod 2-3 passes through the second insertion slot 6-4 and abuts against the energy storage switch sleeve 9.

[0105] The inner wall of the medicine container shell 5 is provided with a medicine bottle support fixing groove 5-4. The medicine bottle support 4 includes a medicine bottle receiving cavity 4-4. A support fixing buckle 4-3 is provided at the entrance of the medicine bottle receiving cavity 4-4. The support fixing buckle 4-3 is engaged with the medicine bottle support fixing groove 5-4. The medicine bottle 13 is disposed in the medicine bottle receiving cavity 4-4.

[0106] The medicine container shell 5 is provided with a first injection observation window 5-2, and the hidden needle sleeve 2 is provided with a second injection observation window 2-1. The position of the second injection observation window 2-1 corresponds to the position of the first injection observation window 5-2. The state of the medicine bottle 13 inside the medicine container assembly can be directly observed through the first injection observation window 5-2 and the second injection observation window 2-1.

[0107] Combination Figures 16-18As shown, during the injection process, the hidden needle sleeve 2 first contacts the skin and begins to retract. At this time, due to the action of the compression spring 14, the energy storage switch sleeve 9 is in the initial position before the hidden needle sleeve 2 retracts. At this time, the push rod 2-3 and the sliding arm 9-2 of the energy storage switch sleeve 9 abut against each other. Simultaneously, before the injection is triggered, the limiting rib 9-1 and the meshing tooth 8-1 are in the meshing position. Simultaneously, the energy storage switch sleeve 9 is limited by the limiting sliding groove 6-5, so that the drive rod 8 is in the energy storage locked state.

[0108] During the retraction of the concealed needle sleeve, the push rod 2-3 pushes against the sliding arm 9-2 and slides towards the top cover 7, causing the energy storage switch sleeve 9 to leave the drive rod 8, so that the locked drive rod 8 is not restricted by axial rotation; the drive rod 8 drives the push rod 10 to rotate under the action of the torsion spring 11, so that the push rod 10 moves axially relative to the fixed plate, thereby pushing the plunger to inject.

[0109] After the injection is completed, the distal end of the hidden needle sleeve 2 leaves the skin surface and is no longer under force. At this time, the compression spring 14 resets and provides a pushing force to push the energy storage switch sleeve 9 to reset, and simultaneously pushes the hidden needle sleeve 2 to reset, thereby locking and preventing the needle from leaking out again.

[0110] The sliding locking process of the hidden needle sleeve 2 can be combined with Figures 19-21 As shown, before the concealed needle sleeve 2 is compressed, the sliding protrusion 3-1 is set inside the rising track 4-1, and the concealed needle sleeve 2 covers the needle inside the drug container assembly; when the concealed needle sleeve 2 is compressed, the concealed needle sleeve 2 drives the sliding protrusion 3-1 to move along the rising track 4-1 to the top switching track. At this time, the needle is exposed for injection. After the injection is completed, the concealed needle sleeve 2 is reset, slides from the switching track to the end of the falling track 4-2 and locks, at which time the needle is covered inside the concealed needle sleeve 2. The above structure achieves needle puncture protection.

[0111] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention do not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A convenient, modular, energy-storing automatic injection device for assembling pharmaceuticals and medical devices, characterized in that, The application relates to a medicine bottle device. The medicine bottle device comprises a medicine bin assembly, an energy storage assembly and a medicine bottle. The medicine bin assembly comprises a medicine bin shell, a hidden needle assembly and a medicine bottle support, the medicine bottle support is arranged in the medicine bin shell, the top end of the medicine bottle is inserted into the medicine bottle support, and the hidden needle assembly is slidably connected in the medicine bin shell; the energy storage assembly comprises an upper shell, an energy storage switch sleeve and a medicine feeding assembly, the medicine feeding assembly is connected with the energy storage switch sleeve and arranged in the interior of the upper shell; the top end of the medicine bottle is provided with a needle head, and the tail end of the medicine bottle is provided with a plunger; The medicine bin assembly and the energy storage assembly are connected through a buckle assembly arranged on the outer wall of the medicine bin shell and the upper shell, when the medicine bin assembly and the energy storage assembly are installed, the output end of the medicine feeding assembly abuts against the plunger at the tail end of the medicine bottle, the hidden needle assembly abuts against the energy storage switch sleeve, the hidden needle assembly shields the needle head before the hidden needle assembly is compressed, and the energy storage switch sleeve limits the medicine feeding assembly to perform liquid pushing operation; The hidden needle assembly comprises a hidden needle sleeve and a limiting ring, the hidden needle sleeve is slidably connected between the medicine bottle support and the medicine bin shell, a placing groove is arranged on the hidden needle sleeve, the limiting ring is arranged in the placing groove, and a sliding convex is arranged on the inner wall of the limiting ring; The outer wall of the medicine bottle support is provided with a sliding track, the sliding track comprises a rising track and a descending track, and the top ends of the rising track and the descending track are combined into a switching track; the sliding convex is slidably connected in the rising track or the descending track, and the sliding convex moves along the sliding track with the compression or release of the hidden needle sleeve, so that the needle head in the medicine bin assembly is exposed or shielded; One end of the hidden needle sleeve is further provided with a top rod, the top rod protrudes radially from the hidden needle sleeve, and the top rod extends into the upper shell and abuts against the energy storage switch sleeve; The inner wall of the medicine bin shell is provided with a hidden needle sleeve sliding track, and a lower limiting surface is arranged below the hidden needle sleeve sliding track; the top rod is arranged in the hidden needle sleeve sliding track, and when the bottom of the top rod abuts against the lower limiting surface, the hidden needle sleeve extends out of the medicine bin shell; The energy storage switch sleeve comprises a sliding arm, the inner wall of the upper shell is provided with a vertical limiting sliding groove, the sliding arm is connected with the limiting sliding groove and moves along the limiting sliding groove; The energy storage assembly further comprises a top cover, and one end of the top cover is connected with the upper shell; 2. The self-contained energy storage automatic injection device of claim 1, wherein: A compression spring is arranged between the energy storage switch sleeve and the top cover.

3. The self-contained energy storage automatic injection device of claim 2, wherein: The buckle assembly comprises a buckling buckle and a buckling groove; a connecting arm is arranged on the outer wall of the medicine bin shell, and the buckling buckle is arranged on the outer wall of the connecting arm; the outer wall of the upper shell is provided with the buckling groove matched with the buckling buckle, and the connecting arm extends into the interior of the upper shell until the buckling buckle is connected with the buckling groove. The medicine feeding assembly comprises a driving rod, a pushing rod and a torsional spring; the driving rod is hollow, the pushing rod is arranged in the interior of the driving rod and serves as the output end of the medicine feeding assembly; the energy storage assembly further comprises a top cover, one end of the top cover is connected with the upper shell, the top cover is provided with a torsional spring upper fixing groove and a driving rod upper insertion pin. The upper end of the driving rod is connected with the upper insertion pin of the driving rod, the outer wall of the lower end of the driving rod is provided with a plurality of meshing teeth, and the inner wall of the energy storage switch sleeve is provided with a plurality of limiting ribs; the lower end of the driving rod is further provided with a torsional spring lower fixed groove, one end of the torsional spring is connected with a torsional spring upper fixed groove, and the other end is connected with the torsional spring lower fixed groove. Each of the limiting ribs extends between two meshing teeth before the needle cover is compressed.

4. The convenient drug and medical device assembly split-type energy storage automatic injection device according to claim 3, characterized in that, The inner wall of the driving rod is provided with a meshing convex block, the outer wall of the push rod is provided with a thread and a meshing groove matched with the meshing convex block; The end of the upper shell away from the top cap is provided with a fixed plate, the fixed plate is provided with a threaded through hole, one end of the push rod is connected with the meshing convex block in the driving rod through the meshing groove, and the other end is in abutment with the plunger after penetrating through the threaded through hole.

5. The convenient drug-device assembly split-type energy storage automatic injection device according to claim 4, characterized in that, The fixed plate is circumferentially provided with a plurality of sound generating ribs, the bottom of the driving rod is provided with a sound generating tab, and the sound generating tab is in contact with the sound generating ribs.

6. A self-contained energy storage automatic injection device for ease of medical assembly in two pieces as defined in claim 5, wherein: The outer side of the fixed plate is provided with a first insertion groove, the connecting arm extends into the interior of the upper shell through the first insertion groove, and the medicine bin shell and the upper shell are connected.

7. A self-contained energy storage automatic injection device for ease of medical assembly in two pieces, according to claim 6, wherein: The outer side of the fixed plate is further provided with a second insertion groove, and the top rod is in abutment with the energy storage switch sleeve after penetrating through the second insertion groove.

8. The self-contained energy storage automatic injection device of claim 1, wherein: The inner wall of the medicine bin shell is provided with a medicine bottle support fixed groove, the medicine bottle support includes a medicine bottle containing cavity, a support fixed buckle is arranged at the entrance of the medicine bottle containing cavity, the support fixed buckle is clamped with the medicine bottle support fixed groove, and the medicine bottle is arranged in the medicine bottle containing cavity.

9. The self-contained energy storage automatic injection device of claim 2, wherein: The medicine bin shell is provided with a first injection observation window, the needle cover is provided with a second injection observation window, and the position of the second injection observation window corresponds to the position of the first injection observation window.

10. The self-contained energy storage automatic injection device of claim 1, wherein: The outer wall of the medicine bin shell away from the energy storage assembly is further provided with a buckling convex block, and the medicine bin assembly further includes a mounting cap, and the buckling convex block is clamped with the side wall of the safety cap.

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