A booster

Abstract

This application discloses a disposable pusher that eliminates the need for doctors to spend time maintaining it, achieving quick, efficient, and safe use. The pusher includes: a push rod, a connecting structure, and a medication cartridge; the connecting structure is tubular, with a first through hole at its first end that mates with the push rod, and a first snap-fit ​​structure at its second end; the medication cartridge is tubular, with a second snap-fit ​​structure at its first end that mates with the first snap-fit ​​structure, and a needle connection structure at its second end; the first and second snap-fit ​​structures form a non-detachable connection when engaged; the push rod is slidably connected to the connecting structure through the first through hole.

Description

[0001] This application is a divisional application of the invention filed on May 14, 2021, with application number 202110528655.6 and entitled "A Booster". Technical Field

[0002] This application relates to the field of medical devices, and in particular to a booster. Background Technology

[0003] Currently, dental anesthesia boosters are generally reusable metal boosters, which can be reused after high-temperature and high-pressure sterilization. Because metal boosters need to meet the requirement of reusability, their components are typically detachable, allowing dentists to easily disassemble and sterilize them. When needed, the dentist reassembles the components, places an anesthetic vial (usually a cartridge) into the medication compartment, and attaches a disposable needle to one end of the booster.

[0004] However, the process of doctors manually assembling the various components of the metal booster in the existing technology may contaminate the metal booster. Furthermore, if the reusable metal booster in the existing technology is not sterilized and disinfected in time after each use, it is easy to cause cross-infection among patients using the metal booster. In addition, the metal booster in the existing technology requires doctors to spend a lot of time on maintenance.

[0005] It is evident that existing metal boosters are neither safe nor efficient, and there is an urgent need for a fast, efficient, and safe booster. Summary of the Invention

[0006] This application provides a disposable booster that eliminates the need for doctors to spend time maintaining it, thus enabling quick, efficient, and safe use of the booster.

[0007] The booster of this application includes: a push rod, a connecting structure, and a drug cartridge;

[0008] The connecting structure is tubular, and the first end face of the connecting structure has a first through hole that mates with the push rod. The second end of the connecting structure has a first snap-fit ​​structure.

[0009] The medicine container is tubular, and the first end of the medicine container has a second snap structure adapted to the first snap structure. The second end of the medicine container has a needle connection structure. When the first snap structure and the second snap structure are connected together, they form a non-detachable connection structure.

[0010] The push rod is adapted to the first through hole and can slide through and connect to the connecting structure.

[0011] Optionally, the first snap-fit ​​structure is a radial snap-fit ​​structure, and the second end of the connecting structure has a guide groove;

[0012] The first end of the medicine container has a guide block adapted to the guide groove.

[0013] Optionally, the connection structure includes: a handheld sleeve and a connecting sleeve;

[0014] The hand sleeve is tubular, with the first end face of the hand sleeve having the first through hole, and the inner wall of the hand sleeve having radial grooves and axial grooves;

[0015] The connecting sleeve is tubular and can be nested inside the hand sleeve. The outer wall of the connecting sleeve has radial ribs that match the radial groove and axial ribs that match the axial groove. The second end of the connecting sleeve has the first buckle structure and the second end of the connecting sleeve has the guide groove.

[0016] or,

[0017] The hand sleeve is tubular, the first end face of the hand sleeve has the first through hole, and the inner wall of the hand sleeve has radial ribs and axial ribs.

[0018] The connecting sleeve is tubular and can be nested inside the hand sleeve. The outer wall of the connecting sleeve has a radial groove that matches the radial rib and an axial groove that matches the axial rib. The second end of the connecting sleeve has the first snap-fit ​​structure and the guide groove.

[0019] Optionally, the connecting sleeve includes: a medicine compartment sleeve and a push rod sleeve;

[0020] The medicine container sleeve is tubular, and the outer wall of the medicine container sleeve has the radial ribs and the axial ribs or the radial grooves and the axial grooves. The second end of the medicine container sleeve has the first buckle structure and the second end of the medicine container sleeve has the guide groove.

[0021] The push rod sleeve is tubular and is fixedly connected inside the medicine compartment sleeve. The push rod sleeve has a third through hole that mates with the push rod.

[0022] Optionally, the connecting sleeve includes: a medicine compartment sleeve and a push rod sleeve;

[0023] The medicine container sleeve is tubular, and the outer wall of the medicine container sleeve has the radial ribs and the axial ribs or the radial grooves and the axial grooves. The second end of the medicine container sleeve has the first buckle structure and the second end of the medicine container sleeve has the guide groove. The inner wall of the medicine container sleeve has a third annular protrusion.

[0024] The push rod sleeve is tubular, with an outer diameter smaller than the inner diameter of the third annular protrusion. The outer wall of the push rod sleeve has a fourth annular protrusion, the outer diameter of which is larger than the inner diameter of the third annular protrusion and smaller than the inner diameter of the medicine container sleeve. This fourth annular protrusion is fixed and restricted between the third annular protrusion and the first end face of the hand sleeve. The push rod sleeve has a third through hole that mates with the push rod.

[0025] Optionally, it may also include: a friction sleeve;

[0026] The friction sleeve has a fourth through hole that mates with the push rod. The friction sleeve is fitted over the push rod and fixed inside the push rod sleeve.

[0027] Optionally, the second end of the push rod may be detachably connected to a rubber pad, a metal piercing hook, or a metal threaded drill bit.

[0028] Optionally, the medicine container has an observation window and a scale.

[0029] Optionally, it also includes: a cartridge bottle with a preset dose of medication;

[0030] The cartridge bottle is adapted to be installed inside the medicine compartment, and one end of the push rod abuts against the movable rubber stopper of the cartridge bottle.

[0031] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0032] The booster of this application embodiment includes a push rod, a connecting structure, and a drug cartridge. The connecting structure is tubular, and its first end face has a first through hole that connects with the push rod. The second end of the connecting structure has a first snap-fit ​​structure. The drug cartridge is tubular, and its first end has a second snap-fit ​​structure that matches the first snap-fit ​​structure. When the first snap-fit ​​structure and the second snap-fit ​​structure are connected, they form a non-detachable connection structure. The second end of the drug cartridge has a needle connection structure. In the initial state, the push rod is slidably connected to the first through hole of the connecting structure. The connecting structure is not connected to the medicine tank. At this time, the medicine bottle to be injected (such as a cartridge bottle pre-filled with the liquid to be injected) needs to be correctly placed into the medicine tank. Then, the first snap-fit ​​structure of the connecting structure and the second snap-fit ​​structure of the medicine tank are connected to form a non-detachable connecting structure, so that one end of the push rod in the connecting structure abuts against the movable rubber stopper in the cartridge bottle. Then, a disposable needle is installed in the needle connecting structure at the second end of the medicine tank, so that one end of the disposable needle pierces into the cartridge bottle and contacts the liquid. At this time, the disposable needle is fixedly connected to the booster of this application. The other end of the disposable needle can be used as the injection end. At this time, you only need to hold the connecting structure and push the push rod to make the liquid in the cartridge bottle flow through the disposable needle and be ejected. Medical personnel can use the booster normally. As can be seen, to avoid repeated use, the booster in this application embodiment forms a non-detachable connection structure between the connecting structure and the medicine container, thereby locking the medicine bottle inside the medicine container and preventing it from being removed again. This effectively ensures that the booster in this application can only be used once. Furthermore, the booster in this application embodiment has a simple structure and is easy to install, requiring no time from doctors to maintain it. This achieves quick, efficient, and safe use of the booster. Moreover, when the booster in this application is mass-produced using medical-grade plastic, the manufacturing cost of each booster can be lower than the single maintenance cost of each traditional metal booster. Therefore, the booster in this application embodiment has a cost advantage while meeting the requirements of quick, efficient, and safe use. Attached Figure Description

[0033] Figure 1 This is an exploded view of the structure of one embodiment of the booster of this application;

[0034] Figure 2 A schematic diagram of an embodiment of the booster adapter for mounting a vial and needle according to this application;

[0035] Figure 3 This is a schematic diagram of an embodiment of the connector and push rod in the booster of this application;

[0036] Figure 4 This is a cross-sectional view of an embodiment of the connector and push rod in the booster of this application;

[0037] Figure 5This is a schematic diagram of one embodiment of the connecting sleeve in the booster of this application;

[0038] Figure 6 A cross-sectional view of an embodiment of the booster adapter for mounting a vial and needle according to this application;

[0039] Figure 7 for Figure 6 A magnified view of part A in the middle;

[0040] Figure 8 Cross-sectional view of another embodiment of the booster adapter for mounting a vial and needle according to this application;

[0041] Figure 9 for Figure 8 A magnified view of part B in the middle section;

[0042] Figure 10 This is a schematic diagram of the structure of one embodiment of the medicine storage sleeve in the booster of this application;

[0043] Figure 11 This is a schematic diagram of one embodiment of the push rod sleeve in the booster of this application;

[0044] Figure 12 Cross-sectional view of another embodiment of the booster adapter for mounting a vial and needle according to this application;

[0045] Figure 13 for Figure 12 A magnified view of part C in the middle;

[0046] Figure 14 This is a schematic diagram of one embodiment of the push rod in the booster of this application;

[0047] Figure 15 This is a schematic diagram of an embodiment of the auger drill bit in the booster of this application. Detailed Implementation

[0048] This application provides a disposable booster that eliminates the need for doctors to spend time maintaining it, thus enabling quick, efficient, and safe use of the booster.

[0049] Please see Figure 1 , Figure 2 as well as Figure 3One embodiment of the booster of this application includes: a push rod 300, a connecting structure 200, and a medicine container 100. The connecting structure 200 is tubular in shape and is used to connect the push rod 300 and the medicine container 100. The first end face 201 of the first end of the connecting structure 200 has a first through hole 202 that connects with the push rod 300. The second end of the connecting structure 200 has a first snap-fit ​​structure. The push rod 300 is adapted to the first through hole 202 and can slide through the connecting structure 200, so that the second end of the push rod 300 can slide to the first through hole 202 and extend into the connecting structure 200. The medicine container 100 is also tubular and is used to accommodate medicine bottles 400 packaged in the form of cartridge bottles or the like. The first end of the medicine container 100 has a second snap-fit ​​structure that matches the first snap-fit ​​structure. When the first snap-fit ​​structure and the second snap-fit ​​structure are connected, they become a non-detachable connection structure, thereby locking the medicine bottle 400 in the medicine container 100 and preventing the medicine bottle 400 from being taken out of the medicine container 100 again, effectively ensuring that the booster of this application can only be used once. In this embodiment, the second end of the medicine container 100 of the booster has a needle connection structure 120. The needle connection structure 120 generally adopts a standard interface commonly used in the market, so as to adapt to disposable needles on the market to use the booster of this application, thereby reducing the cost of using the booster of this application.

[0050] One embodiment of the booster in this application is as follows: the push rod 300 is slidably connected to the connecting structure 200 through the first through hole 202, and the connecting structure 200 is not connected to the medicine container 100. This product form can be achieved by separately packaging the connecting structure 200 and push rod 300 after installation and sterilization, and by separately packaging the medicine container after sterilization. In this product form, the user (medical personnel) needs to manually insert the vial 400 (e.g., a cartridge bottle pre-filled with the liquid to be injected) into the medicine container 100 (e.g., the cartridge bottle has a movable rubber stopper 420 facing the first end of the medicine container 100), and then connect the first snap-fit ​​structure of the connecting structure 200 with the second snap-fit ​​structure of the medicine container 100 to form a non-detachable connection structure, so that the second end of the push rod 300 located within the connecting structure 200 abuts against the movable rubber stopper 420 in the cartridge bottle, and then... The second end of the needle connection structure 120 is fitted with a disposable needle 500, so that one end of the disposable needle 500 pierces the sealing rubber stopper 430 and enters the cartridge 410 to contact the liquid to be injected. At this time, the disposable needle 500 is fixedly connected to the booster of this application. The other end of the disposable needle 500 can be used as the injection end. At this time, it is only necessary to hold the connection structure 200 and push the push rod 300 to make the liquid in the medicine bottle 400 flow through the disposable needle 500 and be ejected. Medical personnel can use the booster for normal injection. As can be seen, the booster in the above-described product form mainly consists of two independently packaged structures, allowing medical personnel to flexibly install the required medicine bottles according to on-site needs. Furthermore, to prevent repeated use, the booster in this embodiment forms a non-detachable connection between the connecting structure 200 and the medicine container 100, thereby locking the medicine bottle 400 inside the medicine container 100 and preventing it from being removed again. This effectively ensures that the booster is for single use only. Moreover, the booster in this embodiment has a simple structure, is easy to install, and requires no maintenance from doctors, achieving quick, efficient, and safe use. It should be noted that when the booster is mass-produced using medical-grade plastic, the manufacturing cost of each booster can be lower than the single maintenance cost of each traditional metal booster. Therefore, the booster in this embodiment offers a cost advantage while meeting the requirements of quick, efficient, and safe use.

[0051] Furthermore, another product form of the booster in this application embodiment is: the push rod 300 is adapted to the first through hole 211 and can slide through and connect to the connecting structure 200. The medicine tank 100 is pre-filled with a medicine bottle containing a specific dose of medicine, and the first snap-fit ​​structure of the connecting structure 200 and the second snap-fit ​​structure of the medicine tank 100 are connected to form a non-detachable connection structure. That is to say, in this product form, the booster in this application embodiment has a cartridge bottle with a preset dose of medicine solution, such as 2ml of anesthetic, pre-filled, and one end of the push rod 300 abuts against the movable rubber stopper of the cartridge bottle. In this product form, the booster containing the cartridge bottle with the preset dose of medicine solution can be sterilized and packaged independently, so that medical personnel can directly take out the booster in this product state from the sterile packaging, and only need to install a disposable needle at the needle connection structure 120 of the medicine tank 100 for use. This further saves medical personnel from the process of installing the medicine bottle, which is suitable for doctors to perform rapid injection, improves the speed of booster use, and reduces the risk of booster contamination.

[0052] Based on the above understanding, a more detailed embodiment of the booster of this application will be described below.

[0053] Specifically, to ensure that the first snap-fit ​​structure of the connecting structure 200 and the second snap-fit ​​structure of the medicine container 100 in the booster of this application form a non-detachable structure, the first snap-fit ​​structure and the second snap-fit ​​structure can adopt a ratchet and ratchet groove structure that cooperate with each other. When the ratchet and ratchet groove are connected, they are located inside the whole formed by the medicine container 100 and the connecting structure 200. In this way, people cannot disengage the ratchet from the ratchet groove from the outside of the booster, and thus cannot disassemble the medicine container 100 and the connecting structure 200. This effectively ensures that the medicine bottle installed in the medicine container 100 cannot be replaced or removed, thereby ensuring the single use of the booster of this application. For example, when the first snap-fit ​​structure is a ratchet, the second snap-fit ​​structure is a ratchet groove; when the first snap-fit ​​structure is a ratchet groove, the second snap-fit ​​structure is a ratchet.

[0054] More specifically, depending on the different installation methods of the first and second snap-fit ​​structures, the first snap-fit ​​structure at the second end of the connecting structure 200 in the booster of this application embodiment can be a radial snap-fit ​​structure. This first snap-fit ​​structure is preferably a ratchet groove located on the inner wall of the connecting structure 200, which is generally a blind hole with a right-angled triangular cross-section. The second snap-fit ​​structure of the medicine container 100, correspondingly adapted and connected to the first snap-fit ​​structure, should also be a radial snap-fit ​​structure. This second snap-fit ​​structure is preferably a ratchet located on the outer wall of the first end of the medicine container 100, which is generally a protrusion with a right-angled triangular cross-section, for example... Figure 1The second snap-fit ​​structure 110 is located on the outer wall of the first end of the medicine container 100. A radial snap-fit ​​structure means that the first and second snap-fit ​​structures need to rotate in a single direction to achieve a specific connection. In this embodiment, the first and second snap-fit ​​structures lock together and cannot rotate further. Therefore, since the radial snap-fit ​​structure requires rotation of both the first and second snap-fit ​​structures to achieve a connection, they must be located in the same plane of rotation. In this embodiment, the second end of the connecting structure 200 preferably has a guide groove, and the outer wall of the first end of the medicine container 100 has a guide block adapted to the guide groove. This guide block can guide the second snap-fit ​​structure on the medicine container 100 and the first snap-fit ​​structure of the connecting structure 200 to slide towards the same plane of rotation along the guide groove. Then, the guide block rotates a certain angle along the guide groove, allowing the second snap-fit ​​structure of the medicine container 100 and the first snap-fit ​​structure of the connecting structure 200 to achieve a connection.

[0055] It is understood that the first snap-fit ​​structure at the second end of the connecting structure 200 in the booster of this application embodiment can also be a longitudinal snap-fit ​​structure. This first snap-fit ​​structure is preferably a ratchet groove located on the inner wall of the connecting structure. The second snap-fit ​​structure of the medicine container 100, which is adapted to be connected to the first snap-fit ​​structure, should also be a longitudinal snap-fit ​​structure. This second snap-fit ​​structure is preferably a ratchet located at the first end of the medicine container 100. The ratchet is generally a protrusion with a right-angled triangular cross-section and has a certain elastic deformation capability. The so-called longitudinal snap-fit ​​structure means that after the first snap-fit ​​structure and the second snap-fit ​​structure are sleeved along the length direction of the booster (i.e., the longitudinal direction), they can achieve a mating connection at a specific position. Furthermore, after the first snap-fit ​​structure and the second snap-fit ​​structure in this application embodiment are mated, they will lock together and can no longer move longitudinally relative to each other. Furthermore, in order to allow the second snap-fit ​​structure to smoothly engage and connect with the corresponding first snap-fit ​​structure, a corresponding guide groove can be provided on the inner wall of the connecting structure 200. This guide groove is used to guide the second snap-fit ​​structure of the medicine container 100 to slide to the first snap-fit ​​structure to achieve engagement and connection. Here, it is not necessary to form a guide block on the medicine container 100, since the second snap-fit ​​structure already has the function of a guide block in the longitudinal installation method.

[0056] It is understood that, since both the medicine container 100 and the connecting structure 200 in this embodiment are tubular, the interconnected connecting structure 200 and medicine container 100 can be provided with multiple mutually cooperating first and second snap-fit ​​structures. The number of mutually cooperating first and second snap-fit ​​structures is not limited here.

[0057] For details, please refer to Figure 3In this embodiment, the first end of the connecting structure 200 of the booster can symmetrically extend radially to form a handhold 203, which is used to facilitate the fixation of the booster by the fingers of medical personnel. The first end of the push rod 300 of the booster in this embodiment is also provided with a push rod ring 320, which is used to facilitate the control of the pushing amount of the push rod body 310 by the thumb of medical personnel. The cross-section of the push rod body 310 of the push rod 300 can be "+", circular, or other shapes. Further details can be found in the references. Figure 14 ,as well as Figure 15 In this application's booster, the second end of the push rod body 310 of the push rod 300 can be detachably connected to a rubber pad 330, a metal puncture hook, or a metal threaded drill bit 340, etc., to achieve different types of contact between the push rod body 310 and the movable rubber stopper 420 in the medicine bottle 400. When the push rod body 310 contacts the movable rubber stopper 420 of the medicine bottle 400 via the rubber pad 330, the injection process using the booster is gentler, making it more suitable for injecting strong or irritating medications. When the push rod body 310 is invasively connected to the movable rubber stopper 420 of the medicine bottle 400 via the metal puncture hook or metal threaded drill bit 340, the push rod 300 achieves an integrated connection with the movable rubber stopper 420, which can meet some application scenarios requiring suction. It is understandable that when the second end of the push rod body 310 is detachably connected to the metal threaded drill bit 340, a rubber pad 330 can be detachably connected to the second end of the push rod body 310. Specifically, the metal threaded drill bit 340 has a thread 342 formed at the second end of the drill bit body 341, a push rod connecting block 344 formed at the second end of the drill bit body 341 that mates with the push rod body 310, and a rubber pad connecting block 343 for mounting the rubber pad 330 is formed between the thread 342 of the drill bit body 341 and the push rod connecting block 344. When the metal threaded drill bit 340 is connected to the second end of the push rod body 310 via the push rod connecting block 344, the rubber pad 330 can be mated and connected to the rubber pad connecting block 343 of the metal threaded drill bit 340. This push rod 300 can meet the usage requirements of various scenarios.

[0058] For further details, please refer to Figure 2In this embodiment of the booster, the medicine container 100 has an observation window 150. This observation window 150 can be a transparent observation area on the medicine container 100. Alternatively, the observation window 150 can be formed by hollowing out the medicine container 100. When the observation window 150 is hollowed out, it should not be large enough to allow the medicine bottle 400 installed inside the medicine container 100 to be removed, ensuring the booster's single-use capability. Preferably, the observation window 150 allows uninterrupted viewing of the entire medicine bottle 400's movable rubber stopper 420 and sealing rubber stopper 430, so that the needle tube 520 of the disposable needle 500 can be successfully inserted into the medicine bottle by observing the sealing rubber stopper 430, and the injection volume can be determined by observing the movement of the movable rubber stopper 420. It is worth noting that a scale value 160 is also provided next to the observation window 150 on the medicine container 100. Preferably, the zero value of the scale value 160 is located in the direction of the needle connection structure 120 of the medicine container 100.

[0059] For further details, please refer to Figure 4 as well as Figure 5 The booster connection structure 200 of this application embodiment may include: a hand sleeve 210 and a connecting sleeve 220. The hand sleeve 210 is tubular, and its first end face is the first end face 201 of the connecting structure 200. The first through hole on the first end face of the hand sleeve 210 is the first through hole 202 on the first end face 201 of the connecting structure 200. The inner wall of the hand sleeve 210 has a radial groove and an axial groove. The connecting sleeve 220 is tubular and can be nested inside the hand sleeve 210. The outer wall of the connecting sleeve 220 has a radial rib 221 adapted to the radial groove of the hand sleeve 210 and an axial rib 222 adapted to the axial groove. The axial rib 222 and the axial groove cooperate to achieve coordinated restriction between the connecting sleeve 220 and the hand sleeve 210 in the rotational degree of freedom direction. The radial rib 221 and the axial groove cooperate to achieve restriction between the connecting sleeve 220 and the hand sleeve 210 in the axial (longitudinal) degree of freedom direction. Furthermore, the radial rib 221 and the radial groove should be an interference fit, so that the connecting sleeve 220 and the handheld sleeve 210 cannot be easily disassembled, or even disassembled at all, after being connected. The second end of the connecting sleeve 220 has a first snap-fit ​​structure 223 of the connecting structure 200, and when a guide groove is required in the connecting structure 200, this guide groove is mainly formed in the connecting sleeve 220. Figure 5As shown, when the first snap-fit ​​structure 223 is a radial snap-fit ​​structure with a ratchet groove, the connecting sleeve 220 can be provided with a corresponding guide groove. This guide groove includes a longitudinal guide groove 224 and a radial rotation guide groove 225. The longitudinal guide groove 224 guides the guide block 130 at the first end of the medicine container 100 to be axially fitted into the connecting sleeve 220, ensuring that the first snap-fit ​​structure 223 and the second snap-fit ​​structure 110 are located in the same rotational plane. The radial rotation guide groove 225 guides the guide block 130 at the first end of the medicine container 100 to rotate radially, so that the second snap-fit ​​structure 110 and the first snap-fit ​​structure 223 are connected. When the first snap-fit ​​structure 223 and the second snap-fit ​​structure 110 are connected... When the 10-part connection is made, the guide block 130 also reaches the limit position of the radial rotation guide groove 225. At this time, due to the ratchet groove of the first snap-fit ​​structure 223 being a radial snap-fit ​​structure and the ratchet of the second snap-fit ​​structure 110, the ratchet and ratchet groove can only slide in one direction, making it impossible for the medicine container 100 to rotate backward. At this time, the guide block 130 also reaches the limit position of the radial rotation guide groove 225, making it impossible for the medicine container 100 to rotate forward. This achieves a non-detachable connection between the medicine container 100 and the connecting sleeve 220. As can be seen from the above description, the connecting sleeve 220 and the handheld sleeve 210 are also non-detachable. Thus, a non-detachable connection is achieved between the medicine container 100, the connecting sleeve 220, and the handheld sleeve 210.

[0060] It is understood that the inner wall of the hand sleeve 210 in this embodiment can also be a radial rib and an axial rib, and the outer wall of the corresponding connecting sleeve 220 has a radial groove that matches the radial rib and an axial groove that matches the axial rib. As long as a fixed and non-detachable connection between the hand sleeve 210 and the connecting sleeve 220 can be achieved, the connection method between the hand sleeve 210 and the connecting sleeve 220 is not limited here. In this embodiment, the connecting structure 200 is produced as two parts, the connecting sleeve 210 and the hand sleeve 220, and then they are connected by the above-mentioned fixed connection method. This avoids concentrating too many feature details on a single connecting structure 200, which would result in excessively high production costs for a single component. In the above-described embodiment, by dividing the connecting structure 200 into a connecting sleeve 210 and a handheld sleeve 220, although the total number of feature details increases (due to the added connection features between the handheld sleeve 210 and the connecting sleeve 220), the details of individual components decrease. Furthermore, it avoids the need for complex features such as guide grooves on the inner wall of the connecting structure 200. Instead of needing guide grooves on the inner wall of the connecting structure 200, it forms hollowed-out longitudinal guide grooves 224 and radial rotation guide grooves 225 on the connecting sleeve 210. In current large-scale manufacturing processes using mold forming, forming hollowed-out longitudinal guide grooves 224 and radial rotation guide grooves 225 on the connecting sleeve 210 is less costly than forming guide grooves on the connecting structure 200. Moreover, after the connecting sleeve 220 and the handheld sleeve 210 are installed together, they can form guide grooves with the same function.

[0061] Furthermore, the connecting sleeve 220 of the booster in this embodiment includes a medicine container sleeve and a push rod sleeve 230. The outer wall of the medicine container sleeve is adapted to connect with the handheld sleeve 210, the inner wall of the medicine container sleeve is adapted to connect with the outer wall of the medicine container 100, and the inner wall of the medicine container sleeve is also adapted to connect with the push rod sleeve 230. The following examples illustrate this:

[0062] In one application embodiment, please refer to Figure 5 , Figure 6 as well as Figure 7 The booster's cartridge sleeve is tubular, and its outer wall has radial and axial ribs or radial and axial grooves, as well as connecting sleeve 220. The second end of the cartridge sleeve has the first snap-fit ​​structure described in the above embodiment, and a guide groove. In other words, the cartridge sleeve possesses all the features of the connecting sleeve 220. Additionally, the push rod sleeve 230 is tubular and is fixedly fitted inside the cartridge sleeve. For example, the push rod sleeve 230 is integrally connected to the cartridge sleeve 220 via a connecting part 232. The push rod sleeve 230 has a third through hole 2311 that mates with the push rod body 310 of the push rod 300. This third through hole 2311 is used to adapt and install the push rod body 310, allowing the push rod body 310 to simultaneously pass through both the first through hole 202 and the third through hole 2311, making the sliding of the push rod 300 within the connecting structure 200 more stable. It is worth noting that the outer diameter of the push rod sleeve 230 is smaller than the inner diameter of the medicine container 100, so that the push rod sleeve 230 can be inserted into the medicine container 100 during the installation of the connecting structure 200 and the medicine container 100. Preferably, the second end face of the second end of the push rod sleeve 230 abuts against the first end face of the first end of the medicine bottle 400 (the first end of the medicine bottle 400 refers to the end with the movable rubber stopper 420). The push rod sleeve 230 restricts the upward movement of the medicine bottle 400, so that the medicine bottle 400 is more stably installed in the medicine container 100, and the push rod body 310 enters the medicine bottle 400 more smoothly and accurately and abuts or penetrates the movable rubber stopper 420. Furthermore, the push rod sleeve 230 extending into the inner wall of the medicine container 100 and the medicine container sleeve 220 located on the outer wall of the medicine container 100 further restrict the deformation of the first end of the medicine container 100, so that the medicine container 100 cannot deform inward to disengage the first snap-fit ​​structure and the second snap-fit ​​structure, thus ensuring the reliability of the connection between the first snap-fit ​​structure and the second snap-fit ​​structure.

[0063] In another embodiment, please refer to Figure 8 as well as Figure 9The booster's cartridge sleeve is tubular, and its outer wall has radial and axial ribs or radial and axial grooves for the connecting sleeve 220. The second end of the cartridge sleeve has the first snap-fit ​​structure described in the above embodiment, and the second end of the cartridge sleeve has a guide groove. In other words, the cartridge sleeve has all the features of the connecting sleeve 220 described above. In addition, the push rod sleeve 230 is tubular and is fitted inside the cartridge sleeve. The push rod sleeve 230 has a third through hole that mates with the push rod body 310 of the push rod 300. The third through hole is used to adapt and install the push rod body 310, so that the push rod body 310 passes through the first through hole and the third through hole, making the sliding of the push rod 300 within the connecting structure 200 more stable. For example, in this embodiment, the inner wall of the medicine compartment sleeve 220 has a third annular protrusion 227; the push rod sleeve 230 is tubular, with an outer diameter smaller than the inner diameter of the third annular protrusion 227, and the outer wall of the push rod sleeve 230 has a fourth annular protrusion 233. The outer diameter of the fourth annular protrusion 233 is larger than the inner diameter of the third annular protrusion 277, and the outer diameter of the fourth annular protrusion 233 is smaller than the inner diameter of the medicine compartment sleeve, so as to fix and restrict the fourth annular protrusion 233 between the third annular protrusion 227 and the first end face of the handheld sleeve 210, thereby realizing the fixed connection between the push rod sleeve 230 and the medicine compartment sleeve. In this embodiment, the connecting sleeve 220 is divided into a medicine compartment sleeve and a push rod sleeve 230, and then they are connected by the above-mentioned fixed connection method. This avoids concentrating too many feature details on a single connecting sleeve 220, thereby preventing excessively high production costs for individual components. Similarly, the outer diameter of the push rod sleeve 230 implemented in this application is smaller than the inner diameter of the medicine container 100, so that the push rod sleeve 230 can be inserted into the medicine container 100 during the installation of the connecting structure 200 and the medicine container 100. The second end face of the second end of the push rod sleeve 230 preferably abuts against the first end face of the first end of the medicine bottle 400 (the first end of the medicine bottle 400 refers to the end with the movable rubber stopper 420). The push rod sleeve 230 restricts the upward movement of the medicine bottle 400, so that the medicine bottle 400 is more stably installed in the medicine container 100, and the push rod body 310 enters the medicine bottle 400 more smoothly and accurately and abuts or penetrates the movable rubber stopper 420. Furthermore, the push rod sleeve 230 extending into the inner wall of the medicine container 100 and the medicine container sleeve 220 located on the outer wall of the medicine container 100 further restrict the deformation of the first end of the medicine container 100, so that the medicine container 100 cannot deform inward to disengage the first snap-fit ​​structure and the second snap-fit ​​structure, thus ensuring the reliability of the connection between the first snap-fit ​​structure and the second snap-fit ​​structure.

[0064] In another embodiment, please refer to [link / reference needed]. Figure 8 as well as Figure 9The booster in this embodiment further includes a helical spring 600. The difference between this embodiment and the previous embodiment is that when the fourth annular protrusion 233 is constrained between the third annular protrusion 227 and the first end face of the handheld sleeve 210, there is a preset distance between the third annular protrusion 227 and the first end face of the handheld sleeve 210, allowing the fourth annular protrusion 233 to slide within this preset distance. In other words, the push rod sleeve 230 can reciprocate within the medicine container sleeve 220 for a preset distance. At this time, the push rod 300, adapted to the first through hole 202, can slidably penetrate and connect to the handheld sleeve 210, and the push rod 300, adapted to the third through hole 2311, can slidably penetrate and connect to the push rod sleeve 230. The push rod 300 is fitted with a preload spring 600. One end of the preload spring 600 abuts against the third annular protrusion 231 on the inner wall of the push rod sleeve 230, and the other end of the preload spring 600 abuts against the first end face of the hand sleeve 210, so that the push rod sleeve 230 maintains the fourth annular protrusion 233 abutting against the third annular protrusion 227 under the preload force of the preload spring 600. The push rod sleeve 230 of the booster in this embodiment has a certain length adjustment capability, so that the medicine container 100 can be adapted to install medicine bottles of different lengths. That is, when the connecting structure 200 of this embodiment is connected to the medicine container 100, the push rod sleeve 230 in the connecting structure 200 can be adapted to abut the second end face of the push rod sleeve 230 against the first end face of the first end of the medicine bottle 400 (the first end of the medicine bottle 400 refers to the end with the movable rubber stopper 420) under the pre-tightening force of the pre-tightening spring 600. The push rod sleeve 230 plays the role of restricting the upward movement of the medicine bottle 400, so that the medicine bottle 400 is stably installed in the medicine container 100.

[0065] Based on the understanding of the above embodiments, please refer to Figure 10 , Figure 11 , Figure 12 as well as Figure 13 In this embodiment of the application, when the push rod body 310 of the push rod 300 in the booster has a circular cross-section, and the handheld sleeve 210 and the medicine container sleeve 220 are connected by threads, the inner wall of the first end face of the handheld sleeve 210 may be provided with a first ratchet 204, and the first end of the push rod sleeve 230 may be provided with a second ratchet 234 that matches the first ratchet 204. This embodiment of the application can achieve the following: when a medicine bottle 400 is installed in the medicine container 100, the connecting structure 200 is not detachable after being connected to the medicine container 100; when no medicine bottle 400 is installed in the medicine container 100, the connecting structure 200 is detachable after being connected to the medicine container 100; this avoids waste caused by mistakenly connecting the medicine container 100 to the connecting structure 200 when the medicine bottle 400 is not installed. An example is given below:

[0066] In this embodiment, the handheld sleeve 210 of the booster is tubular. The inner wall of the first end of the handheld sleeve 210 has a threaded groove, and the first end face of the handheld sleeve 210 has a first through hole 202. The inner wall of the first end face of the handheld sleeve 210 also has a first ratchet 204. The medicine cartridge sleeve 220 is tubular. The outer wall of the first end of the medicine cartridge sleeve 220 has threads that match the threaded groove. The second end of the medicine cartridge sleeve 220 has a first snap-fit ​​structure. In this embodiment, the first snap-fit ​​structure of the medicine cartridge sleeve 220 is a ratchet hole. The second end of the medicine cartridge sleeve 220 has a guide groove, and the inner wall of the medicine cartridge sleeve 220 has a first annular protrusion 228. Additionally, the push rod sleeve 2... 30 is tubular, the outer diameter of the push rod sleeve 230 is smaller than the inner diameter of the first annular protrusion 228, and the outer wall of the first end of the push rod sleeve 230 has a second annular protrusion 236. The outer diameter of the second annular protrusion 236 is larger than the inner diameter of the first annular protrusion 228 and smaller than the inner diameter of the medicine container sleeve 230, so as to restrict the second annular protrusion 236 between the first annular protrusion 228 and the first end face of the hand sleeve 210. There is a preset distance between the first annular protrusion 228 and the first end face of the hand sleeve 210, and the second annular protrusion 236 can slide within the preset distance. That is to say, the push rod sleeve 230 is slidably sleeved inside the medicine container sleeve 220. Additionally, the first annular protrusion 228 has a notch 229, and the outer wall surface of the push rod sleeve 230 has a rib 232 corresponding to the notch 229. When the second annular protrusion 236 is fixed and restricted between the inner end face of the first end of the handheld sleeve 210 and the first annular protrusion 228, the rib 232 is located exactly within the notch 229, thereby restricting the rotational freedom of the push rod sleeve 230, so that the push rod sleeve 230 can only slide within a preset distance length within the medicine container sleeve 220 and cannot rotate. The push rod body 310 of the push rod 300 is fitted with the preload spring 600, and one end of the preload spring 600 abuts against the third annular protrusion 235 on the inner wall of the push rod sleeve 230, and the other end of the preload spring 600 abuts against the inner wall of the first end face of the handheld sleeve 210, so that the push rod sleeve 230 keeps the second annular protrusion 236 abutting against the first annular protrusion 228 under the preload force of the preload spring 600. In addition, the first end face of the push rod sleeve 230 is provided with a first ratchet 234, and the second end face of the push rod sleeve 230 can extend into the medicine tank 100; the inner wall of the first end face of the first end of the hand sleeve 210 is provided with a second ratchet 204 that matches the first ratchet 234. When the connecting structure 200 is not connected to the medicine tank 100, the third annular protrusion 235 of the push rod sleeve 230 is held in place by the preload force of the preload spring 600, keeping the second annular protrusion 236 abutting against the first annular protrusion 228. There is a certain distance between the first ratchet 234 of the first end of the push rod sleeve 230 and the second ratchet 204 of the hand sleeve 210. At this time, since the hand sleeve 210 and the medicine tank sleeve 220 are threadedly connected, the hand sleeve 210 and the medicine tank sleeve 220 can be separated or installed by rotation.

[0067] When the connecting structure 200 is connected to the medicine container 100 on which the medicine bottle 400 is installed, since the outer diameter of the push rod sleeve 230 of the booster in this embodiment is smaller than the inner diameter of the medicine container 100, the push rod sleeve 230 can extend into the medicine container 100 during the installation process of the connecting structure 200 and the medicine container 100. The second end face of the second end of the push rod sleeve 230 preferably abuts against the first end face of the first end of the medicine bottle 400 (the first end of the medicine bottle 400 refers to the end with the movable rubber stopper 420). As the first snap-fit ​​structure of the medicine container sleeve 220 in the connecting structure 200 engages with the second snap-fit ​​structure of the medicine container 100, the connecting structure 200 will gradually approach and engage with the medicine container 100. In this embodiment, the push rod sleeve 230 receives the medicine. As the bottle 400 is gradually squeezed, it overcomes the preload of the preload spring 600, causing the helical spring 600 to be further compressed. This eventually causes the first ratchet 234 of the push rod sleeve 600 to engage with the second ratchet 204 of the handheld sleeve 210. If the handheld sleeve 210 is already threadedly connected to the medicine container sleeve 220, the engagement of the first ratchet 234 and the second ratchet 204 will restrict the rotation of the handheld sleeve 210 relative to the medicine container sleeve 220 in one direction. This restricted rotation direction is exactly the direction in which the handheld sleeve 210 disengages from the threaded rotation of the medicine container sleeve 220. Thus, when the medicine bottle 400 is installed inside the medicine container 100, the connecting structure 200 is not detachable after being connected to the medicine container 100, ensuring the one-time use of the booster that holds the medicine bottle 400.

[0068] When the connecting structure 200 is connected to the medicine compartment 100 without the medicine bottle 400 installed, the push rod sleeve 230 is not squeezed by the medicine bottle 400. Under the pre-tightening force of the pre-tightening spring 600, the third annular protrusion 235 of the push rod sleeve 230 still maintains the second annular protrusion 236 abutting against the first annular protrusion 228. There is still a certain distance between the first ratchet 234 at the first end of the push rod sleeve 230 and the second ratchet 204 of the handheld sleeve 210. At this time, since the handheld sleeve 210 and the medicine compartment sleeve 220 are threaded, Next, the handheld sleeve 210 and the medicine container sleeve 220 can be separated by rotation. When the medicine container sleeve 220 loses the outer protection of the handheld sleeve 210, the ratchet hole, which serves as the first snap-fit ​​structure, on the medicine container sleeve 220 is exposed. At this time, the ratchet of the second snap-fit ​​structure, which is connected to the ratchet hole, can be manually disengaged, and then the medicine container sleeve 220 can be separated from the medicine container 100. Then, the handheld sleeve 210 and the medicine container sleeve 220 are threaded together, thus separating the connecting structure 200 from the medicine container 100. It can be seen that when the medicine container 100 is not equipped with a medicine bottle 400, the connecting structure 200 is detachable after being connected to the medicine container 100, so as to avoid waste caused by mistakenly connecting the medicine container 100 to the connecting structure 200 when the medicine bottle 400 is not installed in the medicine container 100.

[0069] It should be noted that the booster in this embodiment may further include a friction sleeve (not shown in the figure). The friction sleeve has a fourth through hole that is connected to the push rod. The friction sleeve is sleeved outside the push rod body 310 of the push rod 300 and fixed inside the push rod sleeve. The friction sleeve has a preset friction coefficient with the surface of the push rod body 310, so that the booster in this embodiment can achieve different friction settings by replacing the friction sleeve.

[0070] The above description, in conjunction with specific embodiments, illustrates this application and should not be construed as limiting the specific implementation of this application to these embodiments. For those skilled in the art, various modifications and substitutions can be made without departing from the concept of this application, and all such modifications and substitutions should be considered within the scope of protection of this application.

Claims

1. A booster, characterized in that, include: Push rod, connecting structure, medicine tank; The connecting structure is tubular, with a first through hole at its first end face that engages with the push rod, and a first snap-fit ​​structure at its second end. The first snap-fit ​​structure is a radial snap-fit ​​structure, and the second end of the connecting structure has a guide groove. The first end of the medicine container has a guide block that matches the guide groove. The medicine container is tubular, and the first end of the medicine container has a second snap structure adapted to the first snap structure. The second end of the medicine container has a needle connection structure. When the first snap structure and the second snap structure are connected together, they form a non-detachable connection structure. The push rod is adapted to the first through hole and can slidably pass through the connecting structure; the connecting structure includes: a hand sleeve and a connecting sleeve; the hand sleeve is tubular, the first end face of the hand sleeve has the first through hole, and the inner wall of the hand sleeve has a radial groove and an axial groove; the connecting sleeve is tubular and can be nested inside the hand sleeve, the outer wall of the connecting sleeve has a radial rib adapted to the radial groove and an axial rib adapted to the axial groove, the second end of the connecting sleeve has the first buckle structure, and the second end of the connecting sleeve has the guide groove; The connecting sleeve includes: a medicine compartment sleeve and a push rod sleeve; the inner wall of the medicine compartment sleeve has a third annular protrusion, the push rod sleeve is tubular, the outer diameter of the push rod sleeve is smaller than the inner diameter of the third annular protrusion, and the outer wall of the push rod sleeve has a fourth annular protrusion, the outer diameter of the fourth annular protrusion is larger than the inner diameter of the third annular protrusion and smaller than the inner diameter of the medicine compartment sleeve, so as to fix and restrict the fourth annular protrusion between the third annular protrusion and the first end face of the hand sleeve, and the push rod sleeve has a third through hole that mates with the push rod.

2. The booster according to claim 1, characterized in that, Also includes: Friction sleeve; The friction sleeve has a fourth through hole that mates with the push rod. The friction sleeve is fitted over the push rod and fixed inside the push rod sleeve.

3. The booster according to claim 1, characterized in that, The second end of the push rod is detachably connected to a rubber pad, a metal piercing hook, or a metal threaded drill bit.

4. The booster according to claim 1, characterized in that, The medicine container has an observation window and scale values.

5. The booster according to claim 1, characterized in that, Also includes: A cartridge bottle with a pre-set dosage of medication; The cartridge bottle is adapted to be installed inside the medicine compartment, and one end of the push rod abuts against the movable rubber stopper of the cartridge bottle.

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