A clinical trial vaccine injection syringe blind state maintaining device
By designing a syringe kit with a blind maintenance device, the problem of syringe status revealing vaccine information was solved, enabling the syringe to maintain a blind state and perform observation functions, thus ensuring the objectivity and accuracy of vaccine clinical trials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Hunan Provincial Center for Disease Control and Prevention (Hunan Provincial Public Health Testing and Inspection Center Hunan Provincial Academy of Preventive Medicine Sciences)
- Filing Date
- 2025-04-30
- Publication Date
- 2026-07-24
AI Technical Summary
In vaccine clinical trials, the state of the syringe may reveal vaccine information, disrupt blinded design, and affect efficacy and safety assessments.
Design a blind state maintenance device, including a blind state shielding sleeve composed of a first shell and a second shell, connected by a limiting post, equipped with an observation window, a lifting chamber and a miniature cylinder, to realize the shielding and observation functions of the syringe.
It effectively maintains the syringe in a blind state, reduces the risk of information leakage, ensures the objectivity and accuracy of the assessment, adapts to syringes of different diameters, and facilitates the observation of air bubbles and liquid balance.
Smart Images
Figure CN224540264U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vaccine administration device technology, and in particular to a blind maintenance device for clinical trial vaccine syringes. Background Technology
[0002] In vaccine clinical trials, blinding is a key method for obtaining accurate and reliable research results. Double-blind trials require that neither the subjects nor the researchers responsible for evaluation know whether the subjects received a vaccine or a placebo, which greatly reduces the interference of subjective factors on the trial results. However, in practice, the syringe, as a crucial tool for vaccination, may inadvertently reveal vaccine information, thus disrupting the blinding process. For example, different vaccines or placebos may use syringes of different sizes and colors. Researchers may inadvertently disclose the group assignments to subjects or other researchers during the vaccination process, thereby affecting the objective assessment of efficacy and safety. For these reasons, this application proposes a device for effectively maintaining syringe blinding during clinical trial vaccination. Summary of the Invention
[0003] The purpose of this invention is to address the problems existing in the background art by proposing a device for effectively maintaining syringe blindness in clinical trial vaccination.
[0004] The technical solution of this utility model: a blind state maintenance device for a clinical trial vaccine syringe, wherein the blind state maintenance device is sleeved on the outside of the syringe body, the blind state maintenance device includes a blind state shielding sleeve, the blind state shielding sleeve is composed of a first cover and a second cover, the first cover and the second cover are assembled and connected by a limiting post, the first cover is also provided with an observation window that passes through it, the observation window is provided with a lifting cavity, and a lifting port located on the side of the observation window is also provided on one side of the lifting cavity, and a shielding plate and a sliding block are slidably arranged in the lifting cavity and the lifting port.
[0005] Optionally, the sliding block is fixedly connected to the outer arc surface of the baffle plate, and the sliding block is slidably disposed within the lifting port;
[0006] The top of the baffle plate is also connected in an array of springs, and the other end of the springs is fixedly connected to the top inner wall of the lifting cavity.
[0007] Optionally, a fixing block is fixedly connected to the side of the sliding block, and a miniature cylinder is mounted on the fixing block.
[0008] Optionally, a slot is provided on one side of the lifting port, which is arranged in an array along its length, and the output end of the micro cylinder is fitted into the slot.
[0009] Optionally, the casing may also have an observation port located at the front end of the syringe body.
[0010] Optionally, one side of the first cover and the second cover are rotatably connected by a pivot, and the other side of the first cover and the second cover are fixedly connected with an assembly plate. The two assembly plates are provided with through holes for installing the limiting post.
[0011] Optionally, the outer arc surface of the second cover is provided with connecting grooves located at both ends of the assembly plate, and the outer arc surface of the first cover is fixedly connected with connecting plates located at both ends of the assembly plate, and the connecting plates are fitted and snapped into the connecting grooves.
[0012] Optionally, the second housing is also provided with an extension plate for its arcuate expansion, suitable for syringes of different diameters.
[0013] Compared with the prior art, the present invention has the following beneficial technical effects:
[0014] This utility model achieves the shielding of the syringe body through the setting of the blind state shielding sleeve, which is used to maintain blind injection. The flipping setting of the first and second covers facilitates the assembly of the blind state shielding sleeve and the syringe body.
[0015] This invention allows for a visual display of the front end of the syringe body through the setting of the observation port, thereby enabling observation of whether there are air bubbles inside the syringe body before injection and whether there is any remaining injection fluid after injection.
[0016] This invention uses a miniature cylinder to block the obstruction of the observation window by a baffle plate. By separating the miniature cylinder from the slot, the sliding block and the baffle plate can slide along the lifting port and the inner wall of the lifting cavity, thereby removing the obstruction of the observation window and allowing the obstruction area to be adjusted by sliding the baffle plate with one hand.
[0017] In summary, this utility model is structurally innovative, resolving the contradiction between the accuracy and ease of operation in maintaining blind state, minimizing the risk of blind state disruption due to syringe information exposure, providing reliable blind state protection for vaccine clinical trials, and possessing clinical practical value and market potential. Attached Figure Description
[0018] Figure 1 A three-dimensional structural schematic diagram of this utility model is provided;
[0019] Figure 2 A schematic diagram of the blind-state shielding sleeve in this utility model is provided;
[0020] Figure 3 for Figure 2 A schematic diagram of the deployed state of the blind-state occlusion sleeve;
[0021] Figure 4 for Figure 3 Another perspective illustration;
[0022] Figure 5 This is a top view of section AA in this utility model;
[0023] Figure 6 This is a schematic diagram of the cross-sectional structure at point BB in this utility model.
[0024] Figure label:
[0025] 1. Syringe body;
[0026] 2. Blindfold shielding sleeve; 21. Cover shell one; 210. Connecting plate; 211. Observation port; 212. Lifting chamber; 213. Observation window; 214. Lifting port; 215. Slot; 216. Shielding plate; 217. Sliding block; 218. Fixing block; 219. Miniature cylinder; 22. Cover shell two; 220. Connecting groove; 221. Extension plate; 23. Assembly plate; 24. Limiting post; 25. Spring. Detailed Implementation
[0027] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.
[0028] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.
[0029] All other embodiments obtained by those skilled in the art based on the embodiments in this disclosure without inventive effort are within the scope of protection of this disclosure.
[0030] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure 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 disclosure.
[0031] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0032] Example
[0033] like Figures 1-3 As shown, the present invention proposes a blind state maintenance device for clinical trial vaccine syringes. The blind state maintenance device is sleeved on the outside of the syringe body 1. The blind state maintenance device includes a blind state shielding sleeve 2, which is composed of a cover 1 21 and a cover 22. The cover 22 is also provided with an extension plate 221 for its arc surface expansion. The extension plate 221 is used to expand the size of the cover 22, thereby adapting to the installation and use of syringe bodies 1 with different tube diameters. The extension plate 221 is made of air conditioning extension pipe material, and its shape and cross-section are also curved. The cover 1 21 is also provided with an observation port 211 located at the front end of the syringe body 1. The observation port 211 is provided to facilitate the monitoring of the front end of the syringe body 1, for observing whether there are air bubbles before injection and whether there is any remaining injection liquid after injection.
[0034] like Figures 3-6 As shown, one side of the cover 21 and the second cover 22 are rotatably connected by a pivot. The first cover 21 and the second cover 22 are assembled and connected by a limiting post 24. One end of the limiting post 24 is spherical and made of rubber. The other side of the first cover 21 and the second cover 22 are fixedly connected to an assembly plate 23. The outer arc surface of the second cover 22 is provided with connecting grooves 220 at both ends of the assembly plate 23. The outer arc surface of the first cover 21 is fixedly connected to a connecting plate 210 at both ends of the assembly plate 23. The connecting plate 210 and the connecting groove 220 are fitted together. The two assembly plates 23, the connecting plate 210 and the connecting groove 220, are provided with through holes for the installation of the limiting post 24.
[0035] like Figure 5 and Figure 6As shown, the housing 21 also has an observation window 213 extending through it. A lifting cavity 212 is provided inside the observation window 213. A lifting port 214 is also provided on one side of the lifting cavity 212, located on the side of the observation window 213. A baffle plate 216 and a sliding block 217 are slidably disposed within the lifting cavity 212 and the lifting port 214. The sliding block 217 is fixedly connected to the outer arc surface of the baffle plate 216. The sliding block 217 is slidably disposed within the lifting port 214. A fixing block 218 is fixedly connected to the side of the sliding block 217, and a micro-... The miniature cylinder 219 has a slot 215 arranged in an array along its length on one side of the lifting port 214. The output end of the miniature cylinder 219 is fitted into the slot 215. A button is also installed on the outer wall of the cover 21. The button is used to control the drive of the miniature cylinder 219, so that the sliding block 217 and the baffle 216 can control the size of the opening of the observation window 213, which is used to adjust the size of the observation port. Multiple springs 25 are also connected in an array on the top of the baffle 216. The other end of the springs 25 is fixedly connected to the top inner wall of the lifting cavity 212.
[0036] In this embodiment, the observation port 211 is used to observe the air bubbles or the remaining amount of the injection solution. When only a brief observation is needed, such as when adjusting the precise dosage, the observation window 213 needs to be opened. Specifically, pressing the button drives the micro cylinder 219, which retracts its output end and disengages from the corresponding slot 215. The sliding block 217 is moved by one hand, which slides along the inner wall of the lifting port 214, thereby sliding the shield 216 along the inner wall of the lifting cavity 212. This allows the opening amount of the observation window 213 to be adjusted, thereby adjusting the size of the observation surface. After the adjustment is completed, pressing the button is canceled, and the micro cylinder 219 is pushed out and engages with another slot 215, thereby fixing the position of the adjusted shield 216.
[0037] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A blind maintenance device for a clinical trial vaccine syringe, the blind maintenance device being sleeved on the outside of the syringe body (1), the blind maintenance device including a blind shielding sleeve (2), characterized in that: The blind shielding sleeve (2) consists of a first cover (21) and a second cover (22). The first cover (21) and the second cover (22) are connected by a limiting post (24). The first cover (21) is also provided with an observation window (213) that passes through it. The observation window (213) is provided with a lifting cavity (212). The lifting cavity (212) is also provided with a lifting port (214) located on the side of the observation window (213). A shielding plate (216) and a sliding block (217) are slidably arranged in the lifting cavity (212) and the lifting port (214).
2. The blind maintenance device for clinical trial vaccine syringes according to claim 1, characterized in that, The sliding block (217) is fixedly connected to the outer arc surface of the baffle plate (216), and the sliding block (217) is slidably disposed within the lifting port (214); The top of the baffle plate (216) is also connected in an array of multiple springs (25), and the other end of the springs (25) is fixedly connected to the top inner wall of the lifting cavity (212).
3. The blind maintenance device for clinical trial vaccine syringes according to claim 2, characterized in that, A fixing block (218) is fixedly connected to the side of the sliding block (217), and a miniature cylinder (219) is installed on the fixing block (218).
4. The blind maintenance device for clinical trial vaccine syringes according to claim 3, characterized in that, The lifting port (214) is also provided with a slot (215) arranged in an array along its length direction on one side, and the output end of the micro cylinder (219) is fitted into the slot (215).
5. The blind maintenance device for clinical trial vaccine syringes according to claim 1, characterized in that, The casing (21) is also provided with an observation port (211) located at the front end of the syringe body (1).
6. The blind maintenance device for clinical trial vaccine syringes according to claim 1, characterized in that, The first cover (21) and the second cover (22) are rotatably connected on one side by a rotating shaft. The other side of the first cover (21) and the second cover (22) are both fixedly connected with assembly plates (23). The two assembly plates (23) are provided with through holes for the installation of the limiting post (24).
7. The blind maintenance device for clinical trial vaccine syringes according to claim 6, characterized in that, The outer arc surface of the second cover (22) is provided with connecting grooves (220) located at both ends of the assembly plate (23). The outer arc surface of the first cover (21) is fixedly connected with connecting plates (210) located at both ends of the assembly plate (23). The connecting plates (210) are fitted and snapped into the connecting grooves (220).
8. The blind maintenance device for clinical trial vaccine syringes according to claim 1, characterized in that, The second cover (22) is also provided with an extension plate (221) for its arc surface expansion.