Anti-collision needle device for electrolyte analyzer
By introducing an anti-collision needle device into the electrolyte analyzer, the impact force of the aspiration needle is buffered by air pressure, which solves the problem of aspiration needle collision damage, extends the service life of the aspiration needle, and improves the reliability of detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-27
AI Technical Summary
In electrolyte analyzers, the aspiration needle is prone to damage due to mechanical deviations and collisions with sample containers or external obstacles, which can affect test results and the stability of equipment operation.
An anti-collision needle device is adopted, including a mounting plate, a sealing cavity, a piston, a one-way exhaust and intake assembly, which uses air pressure to buffer the impact force of the suction needle and prevent bending or breakage.
It effectively reduces damage to the aspiration needle, extends its service life, and ensures the reliability of testing and the normal operation of the equipment.
Smart Images
Figure CN224051682U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of electrolyte analyser, specifically relates to a kind of anti-collision needle device for electrolyte analyser. BACKGROUND
[0002] In the modern medical examination field, electrolyte analyzer is a kind of vital equipment, for accurately detecting the electrolyte concentration in human body fluid, such as potassium, sodium, chlorine, calcium and the like, and these detection results play a key role in clinical diagnosis, treatment scheme formulation and disease monitoring. As one of the core components of electrolyte analyzer, the stability and accuracy of liquid suction needle directly affect the reliability of detection results.
[0003] In the conventional working process of electrolyte analyzer, liquid suction needle needs to be driven by driving assembly, accurately lowered and inserted into sample container, and the appropriate amount of sample is extracted for subsequent analysis and detection. This seemingly simple liquid suction operation actually faces many challenges.
[0004] The actual operation environment is complex and diverse, and the specifications, shapes and placement positions of sample containers may have certain differences, so that the liquid suction needle is difficult to accurately align the sample container every time in the lowering process. In addition, in some detection systems with high automation degree, liquid suction needle needs to be frequently operated, and mechanical deviation is inevitable during long-time operation, which causes the alignment error between liquid suction needle and sample container. Once the liquid suction needle cannot be accurately inserted into the sample container, it is extremely likely to collide with the container edge or other external obstacles.
[0005] Liquid suction needle is usually made of slender and relatively fragile material to meet the needs of accurate liquid suction and microanalysis, which also leads to weak anti-impact ability. When liquid suction needle accidentally collides with external obstacles, it will be subjected to a strong reverse thrust instantaneously. If this reverse thrust cannot be effectively buffered in time, it will directly act on the liquid suction needle, so that the liquid suction needle bears huge stress, and further causes serious damage such as bending and breaking of the liquid suction needle. The damage of liquid suction needle not only causes single detection task failure, increases detection cost and time, but also may need to replace liquid suction needle, further affects the normal operation of equipment, delays the diagnosis and treatment of patients.
[0006] Therefore, we propose an anti-collision needle device for electrolyte analyzer, which can effectively reduce the damage of impact force to liquid suction needle when liquid suction needle is impacted, prolong the service life of liquid suction needle, and has simple structure and easy maintenance. CONTENT OF UTILITY MODEL
[0007] The utility model discloses a kind of anti-collision needle devices for electrolyte analyser, the device can effectively reduce the damage of impact force to liquid suction needle when liquid suction needle is impacted, prolong the service life of liquid suction needle, while simple structure, easy to maintain.
[0008] The technical scheme adopted by the utility model is as follows:
[0009] An anti-collision needle device for electrolyte analyser, comprising a mounting disc, a sealed cavity is formed in the mounting disc, a liquid suction needle is mounted at the bottom of the mounting disc, a piston is arranged on the liquid suction needle and moves in the sealed cavity, a first conical hole and a second conical hole are formed on the outer side of the mounting disc, a one-way exhaust assembly is arranged in the first conical hole, and a one-way air inlet assembly is arranged in the second conical hole.
[0010] Further, the one-way exhaust assembly comprises a first fixed rod arranged in the first conical hole, a first through hole is formed in the first fixed rod, a first movable rod is arranged in the first through hole, a first limiting disc is mounted at one end of the first movable rod, a first conical sealing disc is mounted at the other end of the first movable rod, and a first spring is sleeved on the first movable rod between the first limiting disc and the first fixed rod.
[0011] Further, the first conical hole is matched with the first conical sealing disc, and a first sealing layer is arranged on the first conical sealing disc.
[0012] Further, the one-way air inlet assembly comprises a second fixed rod arranged in the second conical hole, a second through hole is formed in the second fixed rod, a second movable rod is arranged in the second through hole, a second limiting disc is mounted at one end of the second movable rod, a second conical sealing disc is mounted at the other end of the second movable rod, and a second spring is sleeved on the second movable rod between the second limiting disc and the second fixed rod.
[0013] Further, the second conical hole is matched with the second conical sealing disc, and a second sealing layer is arranged on the second conical sealing disc.
[0014] Further, a hose is arranged at the top of the liquid suction needle.
[0015] The utility model discloses a kind of anti-collision needle devices for electrolyte analyser, the device can effectively reduce the damage of impact force to liquid suction needle when liquid suction needle is impacted, prolong the service life of liquid suction needle, while simple structure, easy to maintain.
[0016] When the electrolyte analyzer works normally, the driving assembly outside the world drives the mounting disc, so that the liquid suction needle starts to perform the liquid suction task. In the ideal state, the liquid suction needle can accurately and accurately insert the sample container to perform the liquid suction operation. However, once the liquid suction needle is not aligned with the sample container during the descending process, or accidentally touches the external obstacles, a reverse thrust will be generated. The thrust will be transmitted to the piston through the liquid suction needle, so that the piston moves upward in the sealed cavity. The upward movement of the piston will cause the gas in the sealed cavity to be rapidly extruded, and the gas pressure will be instantaneously increased. At this time, the high-pressure gas will act on the one-way exhaust assembly, and when the gas pressure reaches a certain degree, the one-way exhaust assembly is opened, and the gas in the sealed cavity is rapidly discharged. This exhaust process effectively buffers the impact force of the liquid suction needle, avoids the damage such as bending and breaking of the liquid suction needle due to the instantaneous strong impact force, and after the liquid suction needle completes the anti-collision action, it needs to be restored to the initial state in order to perform the next liquid suction operation. The one-way air inlet assembly is opened, and the external air rapidly enters the sealed cavity, so that the gas pressure in the sealed cavity is balanced, and the next work of the liquid suction needle is prepared. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is the overall structure schematic view of the utility model;
[0018] Figure 2 is the front view of the utility model;
[0019] Figure 3 is the sectional view of the mounting disc of the utility model;
[0020] Figure 4 is the structure schematic view of the first conical hole and the second conical hole of the utility model.
[0021] In the drawings, the component list represented by each reference sign is as follows:
[0022] 1, mounting disc; 2, sealed cavity; 3, liquid suction needle; 4, piston; 5, first conical hole; 6, second conical hole; 7, first fixed rod; 8, first movable rod; 9, first limiting disc; 10, first conical sealing disc; 11, first spring; 12, second fixed rod; 13, second movable rod; 14, second limiting disc; 15, second conical sealing disc; 16, second spring; 17, hose. DETAILED DESCRIPTION
[0023] In order to make the purpose and advantages of the utility model more clear and obvious, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model.
[0024] For example, Figures 1-4The utility model discloses adopt the technical scheme as follows specifically: A kind of anti-collision needle device for electrolyte analyzer, including mounting disc 1, sealing cavity 2 is opened in mounting disc 1 inside, liquid suction needle 3 is installed in the bottom of mounting disc 1, piston 4 is arranged in sealing cavity 2 and moves in liquid suction needle 3, and first conical hole 5 and second conical hole 6 are opened in the outside of mounting disc 1, one-way exhaust component is arranged in first conical hole 5 inside, and one-way air inlet component is arranged in second conical hole 6 inside.
[0025] Wherein, one-way exhaust component includes the first fixed rod 7 being arranged in first conical hole 5 inside, first through hole is opened in the first fixed rod 7, first movable rod 8 is arranged in first through hole inside, first movable rod 8 one end is installed with first limit disc 9, and first movable rod 8 other end is installed with first conical sealing disc 10, and first movable rod 8 is sleeved with first spring 11 between first limit disc 9 and first fixed rod 7.
[0026] When liquid suction needle 3 drives piston 4 to move upwards, gas pressure is generated, and the gas pressure drives first conical sealing disc 10 to move inside first conical hole 5, first conical sealing disc 10 drives first movable rod 8 to move inside first through hole and extrude first spring 11, so that first conical hole 5 is opened to discharge gas, and liquid suction needle 3 drives piston 4 to quickly rise, so that the impact force received by liquid suction needle 3 is effectively buffered, and damage such as bending and breaking of liquid suction needle 3 due to instantaneous strong impact force is avoided.
[0027] Further, first conical hole 5 is matched with first conical sealing disc 10, and first sealing layer is arranged on first conical sealing disc 10, so that the gas pressure drives first conical sealing disc 10 to move inside first conical hole 5, and the sealing effect of first conical sealing disc 10 is improved.
[0028] Meanwhile, one-way air inlet component includes the second fixed rod 12 being arranged in second conical hole 6 inside, second through hole is opened in the second fixed rod 12, second movable rod 13 is arranged in second through hole inside, second movable rod 13 one end is installed with second limit disc 14, and second movable rod 13 other end is installed with second conical sealing disc 15, and second movable rod 13 is sleeved with second spring 16 between second limit disc 14 and second fixed rod 12.
[0029] When it is needed to restore liquid suction needle 3 to the original position, second limit disc 14 is driven to move by hand or electricity, second limit disc 14 drives second movable rod 13 to make second conical sealing disc 15 move inside second conical hole 6, the gas pressure is restored, liquid suction needle 3 drives piston 4 to quickly move downwards, and after restoring to the original position, second movable rod 13 drives second conical sealing disc 15 to seal second conical hole 6 by the elastic force of second spring 16, so that gas leakage is prevented.
[0030] Further, the second conical hole 6 is matched with a second conical sealing disc 15, and a second sealing layer is arranged on the second conical sealing disc 15, so that the second conical sealing disc 15 is manually or electrically moved in the second conical hole 6, so that the gas enters.
[0031] Meanwhile, the top of the liquid suction needle 3 is provided with a hose 17 in communication with the liquid suction needle 3, and the liquid suction needle 3 is moved through the hose 17 and the external liquid suction assembly (disclosed).
[0032] It should be noted that the connection between the hose 17 and the mounting disc 1 is provided with a sealing sleeve, which further improves the sealing effect.
[0033] The working principle of the utility model is as follows: when the electrolyte analyzer works normally, the external driving assembly drives the mounting disc 1, so that the liquid suction needle 3 starts to perform the liquid suction task. In the ideal state, the liquid suction needle 3 can be accurately inserted into the sample container for liquid suction operation. However, if the liquid suction needle 3 is not aligned with the sample container during the descending process, or accidentally hits the external obstacles, a reverse thrust will be generated. The thrust will be transmitted to the piston 4 through the liquid suction needle 3, so that the piston 4 moves upward in the sealing cavity 2 rapidly, and the upward movement of the piston 4 will cause the gas in the sealing cavity 2 to be sharply pressed, and the air pressure will be instantaneously increased. At this time, the high-pressure gas will act on the one-way exhaust assembly, and when the air pressure reaches a certain degree, the one-way exhaust assembly is opened, and the gas in the sealing cavity 2 is quickly discharged. The exhaust process effectively buffers the impact force received by the liquid suction needle 3, avoids the damage of the liquid suction needle 3 due to the instantaneous strong impact force, such as bending, breaking and the like, and after the liquid suction needle 3 completes the anti-collision action, it needs to be restored to the initial state in order to perform the next liquid suction operation, the one-way air inlet assembly is opened, and the external air quickly enters the sealing cavity 2, so that the air pressure in the sealing cavity 2 is balanced, and the next work of the liquid suction needle 3 is prepared.
[0034] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the principle of the utility model, some improvements and decorations can be made, and these improvements and decorations should be regarded as the protection range of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the field without special description and limitation.
Claims
1. An anti-piercing needle device for an electrolyte analyzer comprising a mounting disc (1), characterized in that: The installation disc (1) is internally provided with a sealed cavity (2), the bottom of the installation disc (1) is provided with a liquid suction needle (3), the liquid suction needle (3) is provided with a piston (4) moving in the sealed cavity (2), and the outer side of the installation disc (1) is provided with a first conical hole (5) and a second conical hole (6), the first conical hole (5) is internally provided with a one-way exhaust assembly, and the second conical hole (6) is internally provided with a one-way air inlet assembly.
2. An anti-piercing needle device for an electrolyte analyzer according to claim 1, characterized in that: The one-way exhaust assembly comprises a first fixed rod (7) arranged in the first conical hole (5), a first through hole is formed in the first fixed rod (7), a first movable rod (8) is arranged in the first through hole, a first limiting disc (9) is arranged at one end of the first movable rod (8), a first conical sealing disc (10) is arranged at the other end of the first movable rod (8), and a first spring (11) is arranged on the first movable rod (8) and located between the first limiting disc (9) and the first fixed rod (7).
3. An anti-piercing needle device for an electrolyte analyzer according to claim 2, characterized in that: The first conical hole (5) is matched with the first conical sealing disc (10), and the first conical sealing disc (10) is provided with a first sealing layer.
4. An anti-piercing needle device for an electrolyte analyzer according to claim 1, characterized in that: The one-way air inlet assembly comprises a second fixed rod (12) arranged in the second conical hole (6), a second through hole is formed in the second fixed rod (12), a second movable rod (13) is arranged in the second through hole, a second limiting disc (14) is arranged at one end of the second movable rod (13), a second conical sealing disc (15) is arranged at the other end of the second movable rod (13), and a second spring (16) is arranged on the second movable rod (13) and located between the second limiting disc (14) and the second fixed rod (12).
5. An anti-piercing needle device for an electrolyte analyzer according to claim 4, characterized in that: The second conical hole (6) is matched with the second conical sealing disc (15), and the second conical sealing disc (15) is provided with a second sealing layer.
6. An anti-piercing needle device for an electrolyte analyzer according to claim 1, characterized in that: The top of the liquid suction needle (3) is provided with a hose (17).