A precision suction injection auxiliary device for vaccination

Abstract

The application discloses a kind of prevention vaccination vaccine precision suction injection auxiliary device, including extraction auxiliary cylinder, extraction dose limiting mechanism, clamping support mechanism and dose observation mechanism, extraction auxiliary cylinder other side hinged rotation open and close, extraction auxiliary cylinder top middle is fixed with threaded sleeve, threaded sleeve is equipped with screw inside screw thread cooperation, recess is opened symmetrically in extraction auxiliary cylinder upper side, screw lower end bearing is equipped with lifting limiting plate, lifting limiting plate is fixed with sliding sleeve on two sides symmetrically, sliding sleeve is equipped with sliding rod, screw upper end is equipped with locking mechanism, extraction auxiliary cylinder lower side is equipped with clamping support mechanism, extraction auxiliary cylinder outside is equipped with dose observation mechanism;The present application realizes stepless adjustment syringe extraction dose by the precision cooperation of threaded sleeve and screw, solves the problem of insufficient precision of traditional mechanical device, solves the dependence on electricity by manual pressing auxiliary suction, and adapts to diversified application scenarios.

Description

Technical Field

[0001] This invention relates to the field of syringe technology, and in particular to an auxiliary device for precise aspiration and injection of preventive vaccines. Background Technology

[0002] Vaccination is an active immunization measure that uses scientifically prepared biological agents (such as inactivated viruses, attenuated pathogens, or antigenic components) to activate the human immune system, causing it to produce specific antibodies and immune memory, thereby preventing the occurrence of infectious diseases. According to the National Immunization Program, vaccines are divided into immunization program vaccines and non-immunization program vaccines, which together constitute a full-life-cycle health protection system. Vaccines mimic pathogen infection, prompting B cells to produce neutralizing antibodies and T cells to form cellular immune memory, thus rapidly clearing the infection when real pathogens invade. Vaccination must follow the immunization schedule; some vaccines require multiple booster doses, while new technologies such as mRNA vaccines directly induce antigen production through gene coding, significantly shortening the development cycle. After vaccination, normal reactions such as transient fever and local redness and swelling may occur, but serious adverse reactions are rare and require 30 minutes of observation after vaccination. The establishment of herd immunity relies on high vaccination rates, which can protect individuals and block the spread of pathogens. For example, the widespread use of the polio vaccine has kept my country polio-free.

[0003] Assisted precision aspiration and injection of vaccines refers to a comprehensive set of measures that utilize intelligent equipment, innovative devices, and digital systems to assist in achieving precision, standardization, and safety in the vaccine aspiration and injection process. Its core objectives are to reduce human error, prevent vaccine waste and contamination, and improve vaccination efficiency. Precision aspiration and injection presupposes adherence to standardized operating procedures, ensuring accurate vaccine dosage and correct injection site and route. The key to precision aspiration and injection lies in the professional competence of personnel, requiring systematic training and assessment to ensure standardized operation. Practical skills training must be conducted at immunization program practice teaching bases, taught by experienced vaccination personnel, to master skills such as aspiration and injection, skin disinfection, and emergency treatment.

[0004] Verifying the accuracy of vaccine aspiration and injection assistance is a systematic process covering the entire chain of "component performance - overall function - clinical application". It requires combining national standards, quantitative indicators, intelligent technology and real-world scenario testing to ensure that the entire process from aspiration to injection is accurate and controllable.

[0005] Its core functions revolve around "precision" and "assistance": precise aspiration relies on quantitative structures or electronic control to ensure that the extracted drug amount strictly conforms to the vaccine's prescribed dosage, avoiding dosage deviations caused by manual operation; precise injection, through automated devices or needle-free technology, achieves precise control of injection depth, speed, and angle, reducing tissue damage and pain. The foundation of precise vaccine aspiration and injection is that the performance of components such as syringes and needles meets standards, mainly including volume tolerance testing, residual volume testing, and sealing and leakage testing. Volume tolerance testing verifies the deviation between the syringe's nominal volume and the actual discharged volume, and is a core indicator of dosage accuracy. It uses a weighing method or direct measurement method. Residual volume testing detects the amount of residual liquid in the syringe after emptying, avoiding drug waste or dosage errors. It is measured using a precision weighing method or a micro-measuring cylinder. Sealing and leakage testing ensures no drug leakage during aspiration / injection, using a pressure testing method. Verifying the accuracy of vaccine aspiration and injection assistance is a comprehensive system involving "standard compliance, technological innovation, and clinical implementation." It requires basic component testing, automated dosage verification, injection process control, clinical scenario evaluation, and long-term stability testing to ensure the accuracy of the equipment throughout the "aspiration-injection" process.

[0006] Utility model application number 202321782795.7 discloses an automatic liquid extraction syringe auxiliary device. Through the automatic liquid extraction component, the extraction clamping frame drives the syringe piston handle to move automatically, easily completing the syringe aspiration operation, thereby achieving the function of automatic liquid extraction. It solves the problem that in the prior art, aspiration is often inconvenient due to excessive resistance. In this case, the operator needs to increase the operating force while keeping the syringe in a stable state, which is time-consuming and laborious. It avoids the possibility of nurses suffering from tenosynovitis due to prolonged use. Moreover, through the measurement display of PLC touch screen, the piston rod core can be accurately aligned with the dose mark set on the syringe, thereby meeting the needs of precise drug administration.

[0007] However, in the aforementioned automatic liquid extraction syringe auxiliary device, the extension and retraction adjustment of the first electric telescopic rod cannot precisely control the moving distance of the extraction clamp, and cannot guarantee that the injection dose remains constant each time. In the aforementioned automatic liquid extraction syringe auxiliary device, the first and second electric telescopic rods require a tail power supply when working, which limits the application scenarios of the auxiliary device. Therefore, the present invention proposes a precise aspiration and injection auxiliary device for preventive vaccination to solve the problems existing in the prior art. Summary of the Invention

[0008] To address the aforementioned problems, the present invention aims to provide a precise aspiration and injection auxiliary device for preventive vaccines. This device achieves stepless adjustment of the syringe dosage through the precise cooperation of a threaded sleeve and a screw, and utilizes the self-locking characteristic of the threaded transmission to ensure a constant dosage, thus solving the problem of insufficient precision in traditional mechanical devices. Manual pressing-assisted aspiration eliminates the dependence on electricity, making it suitable for diverse application scenarios. A curved observation window combined with a scale bar allows for real-time visual calibration of the extraction volume, effectively reducing human error and combining safety and economy.

[0009] To achieve the objectives of this invention, the following technical solution is provided: A precise aspiration and injection auxiliary device for preventive vaccination, comprising an aspiration auxiliary cylinder, an aspiration dose limiting mechanism, a clamping support mechanism, and a dose observation mechanism. The aspiration auxiliary cylinder is hinged and rotated to open and close on the other side. The aspiration dose limiting mechanism includes a threaded sleeve, a screw, a groove, a lifting limit plate, a sliding sleeve, a slide rod, and a locking mechanism. A threaded sleeve is fixedly provided at the top center of the aspiration auxiliary cylinder. A screw is threadedly fitted inside the threaded sleeve. Grooves are symmetrically provided in the upper part of the aspiration auxiliary cylinder. A lifting limit plate is bearing-fitted at the lower end of the screw. Sliding sleeves are symmetrically fixed on both sides of the lifting limit plate. A slide rod slides through the sliding sleeve. A locking mechanism is provided at the upper end of the screw. A clamping support mechanism is provided in the lower part of the aspiration auxiliary cylinder. A dose observation mechanism is provided on the outer side of the aspiration auxiliary cylinder.

[0010] A further improvement is that the sliding rod is fixedly connected to the inside of the groove at the top and bottom, and the lifting limit plate slides and rises and falls in contact with the groove on both sides.

[0011] A further improvement is that the locking mechanism includes a locking disc, a locking hole, a pin, and a socket. The upper end of the screw is fixedly provided with a locking disc, the locking disc is provided with a locking hole around it, the pin is inserted into the locking hole, and a socket is fixedly provided on one side of the extraction auxiliary cylinder.

[0012] A further improvement is that the clamping support mechanism includes a support base, a clamping frame, a clamping groove, and a medicine bottle positioning groove. The support base is provided below the extraction auxiliary cylinder, and the clamping frame is fixedly provided on the support base. A clamping groove is provided in the middle of the upper part of the clamping frame, and a medicine bottle positioning groove is provided in the middle of the support base.

[0013] A further improvement is that the clamping frame is located between the extraction auxiliary cylinders, and the clamping groove cooperates with the syringe for limiting position.

[0014] A further improvement is that the clamping groove corresponds vertically to the positioning groove of the medicine bottle.

[0015] A further improvement is that the dose observation mechanism includes an arc-shaped groove, an arc-shaped observation window, and scale bars. An arc-shaped groove is provided above the middle of the extraction auxiliary cylinder, and an arc-shaped observation window is fixedly provided in the arc-shaped groove. Scale bars are arranged on the arc-shaped observation window.

[0016] The beneficial effects of this invention are as follows: This invention achieves stepless adjustment of the syringe dosage through the precise cooperation of the threaded sleeve and the screw, and ensures constant dosage by utilizing the self-locking characteristics of the threaded transmission, thus solving the problem of insufficient precision of traditional mechanical devices. The manual pressing-assisted suction eliminates the dependence on electricity, making it suitable for diverse application scenarios. The arc-shaped observation window combined with the scale bar allows for real-time visualization and calibration of the extraction volume, effectively reducing human error and combining safety and economy. Attached Figure Description

[0017] Figure 1 This is the overall front sectional view of the present invention;

[0018] Figure 2 This is a top view of the locking disc of the present invention;

[0019] Figure 3 This is the main view of the arc-shaped observation window of the present invention.

[0020] The components include: 1. Extraction auxiliary cylinder; 2. Threaded sleeve; 3. Screw; 4. Groove; 5. Lifting limit plate; 6. Sliding sleeve; 7. Slide rod; 8. Locking disc; 9. Locking hole; 10. Pin; 11. Socket; 12. Support base; 13. Clamping frame; 14. Clamping groove; 15. Medicine bottle positioning groove; 16. Arc groove; 17. Arc observation window; 18. Scale strip. Detailed Implementation

[0021] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0022] Aspiration-injection assistance is a general term for technologies or devices used in the medical field to simplify aspiration (such as extracting medications, blood, or diseased tissue) and injection (such as injecting drugs or sclerosing agents). Its core objective is to improve operational accuracy, reduce the workload of medical staff, and ensure operational safety through mechanical assistance, pressure control, or structural optimization. From a technical perspective, it mainly includes two categories: one is devices that directly assist syringes in completing aspiration and injection, such as handheld automatic aspiration-injection devices, foot-operated assistive devices, and electric aspiration-injection devices; the other is technologies that utilize the aspiration function of syringes to assist other medical operations, such as the "repeated manual maximum pressure aspiration" technique in mechanical thrombectomy, which uses a syringe to repeatedly apply maximum aspiration pressure to clear vascular occlusions and improve recanalization rates; and aspiration techniques in lymphedema reduction surgery, combined with high-frequency pneumatic liposuction machines, to precisely aspirate and remove diseased fat and lymph fluid, improving limb function. These technologies or devices have a wide range of applications, covering multiple fields such as clinical drug dispensing, thrombosis treatment, plastic surgery, and puncture biopsy. They not only reduce the physical exertion of medical staff, but also improve treatment effectiveness and safety through precise control.

[0023] Both handheld automatic aspiration and injection devices and electric aspiration and injection devices are technologies or devices used in the medical field to simplify aspiration and injection operations. However, they differ significantly in practical use, mainly in terms of operation methods, functional positioning, performance parameters, clinical application scenarios, and applicable populations. The core of the handheld automatic aspiration and injection device is "manual holding + automatic execution," meaning that medical staff hold the main body of the device and drive the piston movement through buttons, touch screens, or simple mechanical controls to automate aspiration and injection. The design of the handheld automatic aspiration and injection device focuses more on portability and routine operation, mainly used in clinical medication preparation and simple aspiration scenarios, emphasizing "reducing the labor intensity of medical staff." The handheld automatic aspiration and injection device is suitable for general medical staff, especially nurses who need to frequently perform medication preparation and simple aspiration, reducing their labor intensity through automated operation. For example, (new aspiration medication preparation devices) can improve the medication preparation efficiency of nursing staff and reduce their workload. Electric aspiration and injection devices, on the other hand, are "fixed or dependent on equipment + fully automated." They typically require a power source and use a motor, vacuum pump, or other power system to achieve fully automated aspiration and injection, eliminating the need for manual piston operation by medical personnel. Electric aspiration and injection devices are suitable for professional medical personnel, such as surgeons, interventional radiology doctors, and microsurgeons, who need to possess certain professional knowledge to correctly operate the device and complete complex surgeries.

[0024] Based on this, according to Figure 1 , Figure 2 , Figure 3As shown, this embodiment provides a precise aspiration injection auxiliary device for preventive vaccination, including an extraction auxiliary cylinder 1, an extraction dose limiting mechanism, a clamping support mechanism, and a dose observation mechanism. The extraction auxiliary cylinder 1 is hinged and rotated to open and close on the other side. The extraction dose limiting mechanism includes a threaded sleeve 2, a screw 3, a groove 4, a lifting limiting plate 5, a sliding sleeve 6, a slide rod 7, and a locking mechanism. The threaded sleeve 2 is fixedly provided in the middle of the top of the extraction auxiliary cylinder 1. The screw 3 is threadedly fitted inside the threaded sleeve 2. The groove 4 is symmetrically provided in the upper part of the extraction auxiliary cylinder 1. The lifting limiting plate 5 is bearing-fitted at the lower end of the screw 3. The sliding sleeve 6 is symmetrically fixed on both sides of the lifting limiting plate 5. The slide rod 7 slides through the sliding sleeve 6. The slide rod 7 is fixedly connected to the inside of the groove 4. The lifting limiting plate 5 slides and rises and falls against the groove 4 on both sides. When it is necessary to adjust the syringe dosage, rotate the screw 3 to push the lifting limit plate 5 up and down along the groove 4. The lifting limit plate 5 is used to adjust the length of the syringe rod, so as to adjust the syringe dosage according to the vaccination requirements. The upper end of the screw 3 is equipped with a locking mechanism, the lower part of the extraction auxiliary cylinder 1 is equipped with a clamping support mechanism, and the outer side of the extraction auxiliary cylinder 1 is equipped with a dosage observation mechanism.

[0025] The locking mechanism includes a locking disc 8, a locking hole 9, a pin 10, and a socket 11. The upper end of the screw 3 is fixedly provided with the locking disc 8, and the locking hole 9 is circumferentially provided on the locking disc 8. The pin 10 is inserted into the locking hole 9. The socket 11 is fixedly provided on one side of the extraction auxiliary cylinder 1. When the lifting limit plate 5 is adjusted to the designated position, the pin 10 is passed through the corresponding locking hole 9 and inserted into the socket 11 to lock the locking disc 8 and prevent the screw 3 from rotating.

[0026] The clamping support mechanism includes a support base 12, a clamping frame 13, a clamping groove 14, and a vial positioning groove 15. The support base 12 is located below the extraction auxiliary cylinder 1, and the clamping frame 13 is fixedly mounted on the support base 12. A clamping groove 14 is located in the center of the upper part of the clamping frame 13, and a vial positioning groove 15 is located in the center of the support base 12. The clamping frame 13 is positioned between the extraction auxiliary cylinders 1, and the clamping groove 14 engages with the syringe for positioning. The clamping groove 14 and the vial positioning groove 15 are vertically aligned. When assisting injection, the syringe is inserted into the vial and placed on the support base 12. After the extraction auxiliary cylinder 1 is hinged closed, it is pressed downwards. The syringe plunger is pulled by the clamping frame 13 and the clamping groove 14, achieving precise aspiration and injection assistance through manual downward pressure, thus overcoming the limitation of requiring a power supply during auxiliary operation.

[0027] The dosage observation mechanism includes an arc-shaped groove 16, an arc-shaped observation window 17, and a scale bar 18. An arc-shaped groove 16 is provided in the upper middle part of the extraction auxiliary cylinder 1. An arc-shaped observation window 17 is fixed in the arc-shaped groove 16. A scale bar 18 is arranged on the arc-shaped observation window 17 to assist in observing the position of the lifting limit plate 5 during aspiration and whether the upper end of the syringe plunger is in contact with the lifting limit plate 5 during aspiration assistance, effectively ensuring the accuracy of the syringe aspiration dosage.

[0028] When this precise aspiration injection auxiliary device for immunization is in operation, the syringe is first inserted into the vial and fixed in the clamping groove and positioning groove of the support base. By rotating the screw at the top of the extraction auxiliary cylinder, the lifting limit plate is driven to move up and down along the groove. The aspiration stroke of the syringe plunger is precisely adjusted by the guiding structure of the sliding sleeve and the slide rod, thereby setting the required vaccine dose. After adjustment, the pin is inserted into the corresponding hole of the locking plate to fix the screw and prevent dose deviation. Then, the extraction auxiliary cylinder is closed, and the cylinder body is manually pressed down. The syringe plunger is pulled by the lever action of the clamping frame. The aspiration process is observed in real time by the scale strip in the arc-shaped observation window. The operation is stopped when the top of the syringe plunger contacts the lifting limit plate, completing the precise dose extraction. Finally, the auxiliary cylinder is opened by the hinge structure, and the pre-quantified syringe is taken out for vaccination. The entire process does not require electric drive and relies on mechanical linkage and visual observation to achieve efficient and precise vaccine aspiration.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precise aspiration injection auxiliary device for preventive vaccination, comprising an aspiration auxiliary cylinder (1), an aspiration dose limiting mechanism, a clamping support mechanism, and a dose observation mechanism, wherein the aspiration auxiliary cylinder (1) is hinged to rotate and open / close on the other side, the aspiration dose limiting mechanism comprises a threaded sleeve (2), a screw (3), a groove (4), a lifting limit plate (5), a sliding sleeve (6), a slide rod (7), and a locking mechanism, wherein a threaded sleeve (2) is fixedly provided at the top center of the aspiration auxiliary cylinder (1), a screw (3) is threadedly fitted inside the threaded sleeve (2), a groove (4) is symmetrically provided at the upper part of the aspiration auxiliary cylinder (1), a lifting limit plate (5) is provided at the lower end of the screw (3) with a bearing, a sliding sleeve (6) is symmetrically fixed on both sides of the lifting limit plate (5), a slide rod (7) is slidably passed through the sliding sleeve (6), a locking mechanism is provided at the upper end of the screw (3), a clamping support mechanism is provided at the lower part of the aspiration auxiliary cylinder (1), and a dose observation mechanism is provided on the outer side of the aspiration auxiliary cylinder (1).

2. The precise aspiration and injection auxiliary device for immunization vaccines according to claim 1, characterized in that: The slide bar (7) is fixedly connected to the inside of the groove (4) at the top and bottom, and the lifting limit plate (5) slides and lifts against the groove (4) on both sides.

3. The precise aspiration and injection auxiliary device for immunization vaccines according to claim 1, characterized in that: The locking mechanism includes a locking disc (8), a locking hole (9), a pin (10), and a socket (11). The upper end of the screw (3) is fixedly provided with the locking disc (8). The locking hole (9) is circumferentially provided on the locking disc (8). The pin (10) is inserted into the locking hole (9). The socket (11) is fixedly provided on one side of the extraction auxiliary cylinder (1).

4. The precise aspiration and injection auxiliary device for immunization vaccines according to claim 1, characterized in that: The clamping support mechanism includes a support base (12), a clamping frame (13), a clamping groove (14), and a medicine bottle positioning groove (15). The support base (12) is provided below the extraction auxiliary tube (1). The clamping frame (13) is fixedly provided on the support base (12). The clamping groove (14) is opened in the middle of the upper part of the clamping frame (13). The medicine bottle positioning groove (15) is opened in the middle of the support base (12).

5. The precise aspiration and injection auxiliary device for immunization vaccines according to claim 4, characterized in that: The clamping frame (13) is located between the extraction auxiliary cylinders (1), and the clamping groove (14) cooperates with the syringe for positioning.

6. The precise aspiration and injection auxiliary device for immunization vaccines according to claim 4, characterized in that: The clamping groove (14) corresponds vertically to the medicine bottle positioning groove (15).

7. The precise aspiration and injection auxiliary device for immunization vaccines according to claim 1, characterized in that: The dose observation mechanism includes an arc groove (16), an arc observation window (17), and a scale bar (18). An arc groove (16) is provided in the upper middle of the extraction auxiliary tube (1). An arc observation window (17) is fixedly provided in the arc groove (16). A scale bar (18) is arranged on the arc observation window (17).

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