Syringe and automatic propelling device thereof

Abstract

The utility model relates to the technical field of medical instruments, in particular to an injector and an automatic propelling device thereof, the automatic propelling device comprises a shell, a propelling assembly and a control assembly, a buckle connected with the injector is arranged on the shell, and a through hole for the injector to penetrate through is formed in the end, close to the buckle, of the shell. The propelling assembly comprises a driving piece, a connecting plate and a lead screw which are installed in the shell, the driving piece is located at the end, away from the buckle, of the shell, one end of the lead screw is rotationally connected with the end, close to the buckle, of the shell, and the other end of the lead screw is connected with the driving piece. When the driving piece drives the lead screw to rotate, the connecting plate is driven to slide in the shell and push the injector to inject medicine; the control assembly comprises a control switch and a circuit board, the circuit board is arranged in the shell, and the control switch is electrically connected with the driving piece through the circuit board so as to control the driving piece to work.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a syringe and its automatic propulsion device. Background Technology

[0002] In modern medicine, drug injection is an extremely common procedure in disease treatment. Whether in hospital wards, operating rooms, emergency rooms, or in community clinics and home care settings, various types of medications are administered via injection. The types of medications are numerous, encompassing antibiotics, analgesics, chemotherapy drugs, nutritional supplements, and many others. Different drugs, due to their pharmacological properties, therapeutic purposes, mechanisms of action, and individual patient differences, have strict and varying requirements regarding injection speed.

[0003] For example, during intravenous infusions, some antibiotics, if injected too quickly, may cause nausea, vomiting, palpitations, and other discomfort. In severe cases, they may even trigger allergic reactions or other serious adverse reactions, threatening the patient's life and health. Conversely, some nutritional supplements or ordinary electrolyte solutions, if injected too slowly, may fail to achieve the desired therapeutic effect, delaying treatment. During chemotherapy, the injection rate of chemotherapy drugs needs to be precisely controlled. Injecting too quickly may lead to serious toxic side effects, such as bone marrow suppression and cardiotoxicity, while injecting too slowly may affect the effectiveness of tumor treatment.

[0004] However, in current drug injection procedures, medical staff primarily rely on manually pushing the syringe to control the injection speed. Despite professional training, it remains difficult to guarantee that the injection speed will consistently match the standard speed required for each drug. This is mainly due to several factors. Firstly, in busy medical environments, medical staff may experience distractions due to handling multiple patients simultaneously, dealing with emergencies, or fatigue, making it difficult to maintain consistent and precise injection speed control. Secondly, the manual injection method itself lacks precise speed feedback and adjustment mechanisms. Medical staff, relying solely on experience and visual observation, struggle to accurately grasp minute speed changes, making it difficult to achieve stable and precise injection speed control over extended periods. Therefore, this invention is proposed. Utility Model Content

[0005] To address the problem of existing syringes' difficulty in accurately controlling injection speed during drug injection, this invention provides a syringe and its automatic propulsion device.

[0006] To solve the above-mentioned technical problems, this utility model provides an automatic propulsion device for a syringe. The automatic propulsion device includes a housing, a propulsion assembly, and a control assembly. The housing is provided with a buckle for connecting to the syringe. A through hole for the syringe to pass through is opened at one end of the housing near the buckle. The propulsion assembly includes a drive component, a connecting plate, and a lead screw installed in the housing. The drive component is located at the end of the housing opposite to the buckle. One end of the lead screw is rotatably connected to the end of the housing near the buckle, and the other end is connected to the drive component. The connecting plate is threadedly connected to the lead screw. When the drive component drives the lead screw to rotate, it causes the connecting plate to slide in the housing and pushes the syringe to inject the drug.

[0007] The control component includes a control switch and a circuit board. The circuit board is disposed inside the housing. The control switch is electrically connected to the drive unit through the circuit board to control the operation of the drive unit.

[0008] In an embodiment of this utility model, the propulsion assembly further includes a guide rod located inside the housing, with both ends of the guide rod fixedly connected to both ends of the housing, and the connecting plate slidably connected to the guide rod.

[0009] In an embodiment of this utility model, the propulsion assembly further includes a transmission gear, an isolation plate is provided at one end of the housing near the drive member, the circuit board is spaced apart from the isolation plate and forms an isolation space between the isolation plates, the transmission gear is located in the isolation space, and the lead screw is connected to the drive member through the transmission gear.

[0010] In an embodiment of this utility model, a mounting platform is provided around the inner wall of the housing, and mounting holes are provided on the mounting platform. The circuit board is attached to the mounting platform and connected to the mounting holes by bolts.

[0011] In an embodiment of this utility model, the buckle includes a locking post and a rubber plug. One end of the locking post is fixedly connected to the housing, and the other end is fixedly connected to the rubber plug. The diameter of the rubber plug is larger than the diameter of the locking post. The syringe has an insertion hole adapted to the diameter of the locking post for the locking post to be inserted and connected.

[0012] In an embodiment of this utility model, the buckle includes a first snap-fit ​​piece and a second snap-fit ​​piece. The first snap-fit ​​piece is fixed to the housing and has snap holes at both ends. The second snap-fit ​​piece includes a sleeve portion and snap-fit ​​portions located on both sides of the sleeve portion. The sleeve portion has a through hole for engaging with the syringe, and the snap-fit ​​portion has a snap post for engaging with the snap hole.

[0013] In an embodiment of this utility model, the control component further includes a speed control switch located on the surface of the housing. The speed control switch is electrically connected to the drive component via the circuit board to control the rotational speed of the drive component.

[0014] In an embodiment of this utility model, the control component further includes a pressure sensor and a solenoid valve. The solenoid valve is mounted on the circuit board, and the pressure sensor is disposed inside the syringe and electrically connected to the drive component through the solenoid valve.

[0015] In an embodiment of this utility model, the outer wall of the housing is provided with a rubber anti-slip layer.

[0016] To address the problems in the prior art, this utility model also provides a syringe, comprising a syringe barrel, an injection rod, a needle, and the aforementioned automatic propulsion device. One end of the syringe barrel is fixed with an ear plate, and the other end is fixed with a connecting tube. The needle is inserted into and connected to the connecting tube. The injection rod is sleeved inside the syringe barrel. The automatic propulsion device is mounted on the ear plate and connected to the injection rod to push the injection rod to move within the syringe barrel.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The offline calibration device and method provided in this embodiment of the present invention have at least the following technical effects:

[0019] The automatic propulsion device is connected to the syringe via a snap-fit ​​mechanism. A drive unit is housed within the casing, and a connecting plate is connected to the drive unit via a lead screw. When the drive unit operates, it rotates the lead screw, causing the lead screw to slide within the casing, thus propelling the syringe to inject medication. A circuit board is housed within the casing, and a control switch is electrically connected to the drive unit via the circuit board. This allows medical personnel to control the drive unit during medication injection, enabling it to push the syringe through the connecting plate. The mechanical transmission method provides stable thrust, ensuring the accuracy and stability of the injection process. Compared to manual injection, the automatic propulsion device can inject at a set speed and dosage, reducing injection errors caused by human factors, such as uneven injection speed and inaccurate dosage. Other features and advantages of this embodiment will be described in the subsequent detailed implementation section. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A three-dimensional structural diagram of the automatic propulsion device provided in the embodiment of this application mounted on a syringe;

[0022] Figure 2 This is a schematic diagram of the exploded structure of the automatic propulsion device and syringe provided in the embodiments of this application;

[0023] Figure 3 This is an exploded structural diagram of the automatic propulsion device provided in the embodiments of this application.

[0024] The reference numerals in the attached figures are explained as follows:

[0025] 1. Automatic propulsion device; 2. Syringe; 11. Housing; 12. Propulsion assembly; 13. Control assembly; 21. Injection barrel; 22. Injection rod; 23. Needle; 211. Ear plate; 212. Connecting tube;

[0026] 111. Buckle; 112. Isolation plate; 113. First snap-fit ​​piece; 114. Second snap-fit ​​piece; 115. Shell cover; 1141. Sleeve part; 1142. Snap-fit ​​part;

[0027] 121. Driving component; 122. Connecting plate; 123. Lead screw; 124. Transmission gear;

[0028] 131. Control switch; 132. Circuit board; 133. Speed ​​control switch. Detailed Implementation

[0029] Unless otherwise specified, the terms “second direction,” “first direction,” “third direction,” “inner,” and “outer” used in the following descriptions, indicating orientation or positional relationships, are understood to be based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, features specified with "first" or "second" for descriptive purposes only should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features specified with "first" or "second" may explicitly or implicitly include at least one of the specified features. The description of "multiple" generally means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this application, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] In the description of this specification, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0033] Please refer to Figures 1-3 To address the problems in the prior art, this utility model provides an automatic propulsion device 1 for a syringe 2. The automatic propulsion device 1 includes a housing 11, a propulsion assembly 12, and a control assembly 13. The housing 11 is provided with a buckle 111 for connecting to the syringe 2. A through hole for the syringe 2 to pass through is opened at one end of the housing 11 near the buckle 111. The propulsion assembly 12 includes a drive component 121, a connecting plate 122, and a lead screw 123 installed inside the housing 11. The drive component 121 is located at the end of the housing 11 away from the buckle 111. One end of the lead screw 123 is rotatably connected to the end of the housing 11 near the buckle 111, and the other end is connected to the drive component 121. The connecting plate 122 is threadedly connected to the lead screw 123. When the drive component 121 drives the lead screw 123 to rotate, it causes the connecting plate 122 to slide inside the housing 11 and pushes the syringe 2 to inject the drug.

[0034] The control component 13 includes a control switch 131 and a circuit board 132. The circuit board 132 is disposed inside the housing 11. The control switch 131 is electrically connected to the drive component 121 through the circuit board 132 to control the operation of the drive component 121.

[0035] By providing a latch 111 on the housing 11, the automatic propulsion device 1 is connected to the syringe 2 via the latch 111. A drive member 121 is installed inside the housing 11, and a connecting plate 122 is connected to the drive member 121 via a lead screw 123. When the drive member 121 operates, it drives the lead screw 123 to rotate, causing the lead screw 123 to slide within the housing 11, thereby pushing the syringe 2 to inject medication. A circuit board 132 is installed inside the housing 11, and a control switch 131 is electrically connected to the drive member 121 via the circuit board 132. This allows medical personnel to control the drive member 121 during medication injection, enabling it to push the syringe 2 via the connecting plate 122. The mechanical transmission method provides a stable thrust, ensuring the accuracy and stability of the injection process. Compared to manual injection, the automatic propulsion device 1 can inject at a set speed and dosage, reducing injection errors caused by human factors, such as uneven injection speed and inaccurate dosage.

[0036] In this embodiment of the invention, the driving component 121 is a micro motor, which drives the lead screw 123 to rotate under the action of the micro motor, thereby causing the lead screw 123 to drive the connecting plate 122 to move and push the syringe 2 to inject drugs, thereby improving the stability and accuracy of drug injection.

[0037] In an embodiment of this utility model, the propulsion assembly 12 further includes a guide rod located inside the housing 11. The two ends of the guide rod are fixedly connected to the two ends of the housing 11, and the connecting plate 122 is slidably connected to the guide rod. Thus, when the driving member 121 drives the lead screw 123 to rotate, one end of the connecting plate 122 moves under the rotation of the lead screw 123, and the other end of the connecting plate 122 slides under the action of the guide rod. That is, under the combined action of the lead screw 123 and the guide rod, the movement of the connecting plate 122 is more stable and smooth, avoiding shaking or displacement of the connecting plate 122 due to uneven force or other factors, making the drug injection more uniform and stable, reducing the discomfort caused to the patient by shaking or jamming during the injection process, and improving the comfort and safety of the injection.

[0038] In other embodiments, the guide rod can be replaced by a lead screw 123. That is, the connecting plate 122 is moved within the housing 11 under the combined action of the two lead screws 123, thereby further improving the movement stability of the connecting plate 122 and ensuring the smoothness and accuracy of drug injection.

[0039] In an embodiment of this utility model, the propulsion assembly 12 further includes a transmission gear 124. An isolation plate 112 is provided at one end of the housing 11 near the drive member 121. The circuit board 132 is spaced apart from the isolation plate 112, forming an isolation space between the isolation plates 112. The transmission gear 124 is located in the isolation space. The lead screw 123 is connected to the drive member 121 through the transmission gear 124 to reduce the noise and vibration generated when the transmission gear 124 rotates. At the same time, the isolation plate 112 can also separate the circuit board 132 from the connecting plate 122, preventing the moving connecting plate 122 from interfering with the electrical components on the circuit board 132, thereby improving the safety and stability of the automatic propulsion device 1 and extending its service life.

[0040] In one example, the drive component 121 is equipped with a drive gear, and both lead screws 123 are equipped with transmission gears 124. The drive gear is connected to both lead screws 123 through the two transmission gears 124. When the drive component 121 is working, it drives the drive gear to rotate, and the rotating drive gear drives the two transmission gears 124 to rotate simultaneously. This allows the two sides of the connecting plate 122 to move smoothly under the rotation of the two lead screws 123, ensuring the stability and accuracy of drug injection.

[0041] In this embodiment of the invention, a mounting platform is provided around the inner wall of the housing 11, and mounting holes are provided on the mounting platform. The circuit board 132 is attached to the mounting platform and connected to the mounting holes by bolts, so as to provide a mounting base for the circuit board 132 under the action of the mounting platform, and fix the circuit board 132 to the mounting platform by bolts, ensuring the stability of the circuit board 132 in the housing 11. At the same time, the circuit board 132 can be quickly disassembled and installed when the automatic propulsion device 1 needs maintenance, improving the maintainability of the automatic propulsion device 1 and reducing maintenance costs and time.

[0042] In an embodiment of this utility model, a cover 115 is provided at one end of the housing 11 near the drive member 121. The cover 115 is threadedly connected to the end of the housing 11 to seal the circuit board 132, thereby providing dust protection and protection for the electrical components.

[0043] In an embodiment of this utility model, the buckle 111 includes a locking post and a rubber plug. One end of the locking post is fixedly connected to the housing 11, and the other end is fixedly connected to the rubber plug. The diameter of the rubber plug is larger than the diameter of the locking post. The syringe 2 has an insertion hole that matches the diameter of the locking post for the locking post to be inserted and connected. This allows the automatic propulsion device 1 to be quickly connected to the syringe 2 by inserting the rubber plug into the insertion hole on the syringe 2 and causing the rubber plug to undergo elastic deformation, thereby connecting the locking post to the insertion hole. This facilitates the quick connection of the automatic propulsion device 1 and the syringe 2, making it convenient for medical personnel to administer medication. When disassembling, the automatic propulsion device 1 can be removed from the syringe 2 simply by pulling the rubber plug out of the insertion hole, making it convenient for medical personnel to discard the syringe 2 and reuse the automatic propulsion device 1.

[0044] In an embodiment of this utility model, the buckle 111 includes a first snap-fit ​​piece 113 and a second snap-fit ​​piece 114. The first snap-fit ​​piece 113 is fixed to the housing 11 and has snap holes at both ends. The second snap-fit ​​piece 114 includes a sleeve portion 1141 and snap-fit ​​portions 1142 located on both sides of the sleeve portion 1141. The sleeve portion 1141 has a through hole for engaging with the syringe 2. The snap-fit ​​portion 1142 has snap pins that engage with the snap holes. When it is necessary to connect the automatic propulsion device 1 to the syringe 2, the sleeve portion 1141 of the second snap-fit ​​piece 114 is sleeved on the syringe 2, and then the snap pins on the snap-fit ​​portion 1142 are engaged with the snap holes at both ends of the first snap-fit ​​piece 113 to complete the connection. The snap-fit ​​method is simple and quick to operate, requires no tools, and facilitates medical personnel to quickly install the syringe 2 in emergency situations, improving work efficiency and ensuring the timeliness of drug injection.

[0045] In an embodiment of this utility model, the control component 13 further includes a speed control switch 133 located on the surface of the housing 11. The speed control switch 133 is electrically connected to the drive component 121 via the circuit board 132 to control the rotation speed of the drive component 121. The setting of the speed control switch 133 allows the operator to control the rotation speed of the drive component 121 according to factors such as the properties of the drug, individual differences of the patient, and treatment needs, thereby realizing the adjustment of the drug injection speed, improving the flexibility and adaptability of drug injection, better meeting the needs of different medical scenarios, and improving the treatment effect and patient comfort.

[0046] In an embodiment of this utility model, the control component 13 further includes a pressure sensor and a solenoid valve. The solenoid valve is mounted on the circuit board 132, and the pressure sensor is disposed inside the syringe 2 and electrically connected to the drive component 121 through the solenoid valve.

[0047] A pressure sensor is installed inside the syringe 2 to monitor pressure changes in real time. It is electrically connected to the drive unit 121 via a solenoid valve. When the pressure sensor detects an abnormal pressure (such as too high or too low), it can promptly provide feedback to the drive unit 121, controlling its operating state, such as stopping the injection or adjusting the injection speed. This prevents problems such as vascular damage and drug leakage caused by excessive injection pressure, as well as incomplete injection caused by excessively low pressure, thereby improving the safety of drug injection and providing patients with more reliable treatment protection.

[0048] In this embodiment of the utility model, the outer wall of the housing 11 is provided with a rubber anti-slip layer to increase the friction when medical staff hold the automatic propulsion device 1, prevent the automatic propulsion device 1 from falling due to slipping, ensure the safety of operation and the comfort of holding, and enable the operator to operate the automatic propulsion device 1 more easily and stably.

[0049] To address the problems in the prior art, this utility model also provides a syringe 2, which includes a syringe barrel 21, an injection rod 22, a needle 23, and the aforementioned automatic propulsion device 1. One end of the syringe barrel 21 is fixed with an ear plate 211, and the other end is fixed with a connecting tube 212. The needle 23 is inserted into and connected to the connecting tube 212. The injection rod 22 is sleeved inside the syringe barrel 21. The automatic propulsion device 1 is installed on the ear plate 211 and connected to the injection rod 22 to push the injection rod 22 to move inside the syringe barrel 21.

[0050] In use, the automatic propulsion device 1 is installed on the ear plate 211 of the syringe 2 via the snap fastener 111, and the housing 11 is connected to the injection rod 22. When the drive unit 121 operates, it drives the lead screw 123 to rotate, causing the lead screw 123 to slide the connecting plate 122 within the housing 11, thereby pushing the syringe 2 to inject the drug. By placing the circuit board 132 inside the housing 11 and electrically connecting the control switch 131 to the drive unit 121 via the circuit board 132, medical personnel can control the drive unit 121 to operate during drug injection, causing the drive unit 121 to push the syringe 2 through the connecting plate 122 for injection. The mechanical transmission method provides a stable thrust, ensuring the accuracy and stability of the drug injection process. Compared to manual injection, the automatic propulsion device 1 can inject at a set speed and dosage, reducing injection errors caused by human factors, such as uneven injection speed and inaccurate dosage.

[0051] The technical features described above can be combined arbitrarily. Although not all possible combinations of these technical features are described, any combination of these technical features should be considered to be covered by this specification, provided that such combination does not contain contradictions.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still adjust the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these adjustments or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An automatic advancing device for a syringe, characterized in that, The automatic propulsion device includes a housing, a propulsion assembly, and a control assembly. The housing has a buckle for connecting to the syringe. The end of the housing near the buckle has a through hole for the syringe to pass through. The propulsion assembly includes a drive component, a connecting plate, and a lead screw installed inside the housing. The drive component is located at the end of the housing opposite to the buckle. One end of the lead screw is rotatably connected to the end of the housing near the buckle, and the other end is connected to the drive component. The connecting plate is threadedly connected to the lead screw. When the drive component drives the lead screw to rotate, it causes the connecting plate to slide inside the housing and pushes the syringe to inject the drug. The control component includes a control switch and a circuit board. The circuit board is disposed inside the housing. The control switch is electrically connected to the drive unit through the circuit board to control the operation of the drive unit.

2. The self-propelled device of claim 1, wherein, The propulsion assembly also includes a guide rod located inside the housing, with both ends of the guide rod fixedly connected to both ends of the housing, and the connecting plate slidably connected to the guide rod.

3. The self-propelled device of claim 1, wherein, The propulsion assembly also includes a transmission gear. An isolation plate is provided at one end of the housing near the drive component. The circuit board is spaced apart from the isolation plate and forms an isolation space between the isolation plates. The transmission gear is located in the isolation space. The lead screw is connected to the drive component through the transmission gear.

4. The self-propelled device of claim 1, wherein, The inner wall of the housing is provided with a mounting platform around its perimeter. The mounting platform is provided with mounting holes. The circuit board is attached to the mounting platform and connected to the mounting holes by bolts.

5. The automatic propulsion device according to claim 1, characterized in that, The buckle includes a locking pin and a rubber plug. One end of the locking pin is fixedly connected to the housing, and the other end is fixedly connected to the rubber plug. The diameter of the rubber plug is larger than the diameter of the locking pin. The syringe has an insertion hole that matches the diameter of the locking pin for the locking pin to be inserted and connected.

6. The self-propelled device of claim 1, wherein, The buckle includes a first snap-fit ​​piece and a second snap-fit ​​piece. The first snap-fit ​​piece is fixed to the housing and has snap holes at both ends. The second snap-fit ​​piece includes a sleeve portion and snap-fit ​​portions located on both sides of the sleeve portion. The sleeve portion has a through hole for engaging with the syringe, and the snap-fit ​​portion has a snap post for engaging with the snap hole.

7. The self-propelled device of claim 1, wherein, The control component also includes a speed control switch located on the surface of the housing, which is electrically connected to the drive unit via the circuit board to control the rotational speed of the drive unit.

8. The self-propelled device of claim 1, wherein, The control component also includes a pressure sensor and a solenoid valve. The solenoid valve is mounted on the circuit board, and the pressure sensor is located inside the syringe and electrically connected to the drive unit through the solenoid valve.

9. The self-propelled device of claim 1, wherein, The outer wall of the shell is provided with a rubber anti-slip layer.

10. A syringe characterized by, The syringe includes a syringe barrel, an injection rod, a needle, and an automatic propulsion device as described in any one of claims 1-9. One end of the syringe barrel is fixed with an ear plate, and the other end is fixed with a connecting tube. The needle is inserted into the connecting tube. The injection rod is sleeved inside the syringe barrel. The automatic propulsion device is mounted on the ear plate and connected to the injection rod to push the injection rod to move inside the syringe barrel.

Images