Needle washing assembly
By designing a needle wash assembly including a cleaning rack, a syringe barrel and a cleaning agent container, the problem that the existing immunoassay device cannot effectively clean the sample needle, achieving good cleaning effect of the sample needle, and improving detection accuracy and reliability.
Patent Information
- Application Number
- CN202420679159.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-04-03
AI Technical Summary
In the liquid addition and liquid absorption links, existing immunoassay devices cannot effectively clean the filling needle (sampling needle) in contact with the sample, resulting in the failure of the inner wall to achieve good cleaning effect.
A needle washing assembly is designed, including a cleaning rack, a syringe barrel and a cleaning agent container. The syringe barrel is opened with a needle washing channel that penetrates up and down and multiple liquid inlets, allowing the sampling needle to absorb the cleaning agent and perform effective cleaning.
Through this needle washing assembly, the sampling needle can achieve good cleaning effect, ensure the cleanliness of the inner wall, thereby improving the detection accuracy and reliability of the immunoassay device.
Smart Images
Figure CN222872919U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of immunoassay analyzers, in particular to a needle washing component. Background Art
[0002] The existing immunoassay analyzers involve a series of liquid adding and liquid aspiration steps in the whole process of sample detection and analysis, including sample filling, reagent filling, and waste liquid extraction. These liquid adding and liquid aspiration steps require suction from the filling needle to achieve this. In order to avoid mutual contamination, it is necessary to clean the filling needle. Currently, the filling needle inserted into the syringe wash is generally cleaned by injecting cleaning liquid into the syringe wash cylinder. However, this cleaning method has low cleaning ability and cannot achieve a good cleaning effect on the inner wall of the filling needle (i.e., the sampling needle) that is in contact with the sample.
[0003] In view of the above problems, it is necessary to study a needle washing assembly that can achieve a good cleaning effect for the sampling needle. Utility Model Content
[0004] The utility model aims to provide a needle washing assembly, which can achieve a good cleaning effect for the sampling needle.
[0005] In order to achieve the above purpose, the solution of the utility model is:
[0006] A needle washing assembly comprises a washing rack, a needle washing cylinder matched with the washing rack and a cleaning agent container for containing cleaning agent; the needle washing cylinder is provided with a needle washing channel which passes through from top to bottom, the upper end of the needle washing channel forms a needle inlet, the lower end of the needle washing channel forms a waste liquid outlet, and the needle washing cylinder is also provided with at least one liquid inlet which communicates with the needle washing channel.
[0007] The cleaning agent container is detachably matched with the cleaning rack.
[0008] The cleaning rack is provided with a placing cylinder, and the cleaning agent container is placed in the placing cylinder.
[0009] The liquid inlet of the needle washing cylinder is divided into an upper liquid inlet and a lower liquid inlet. The upper liquid inlet is arranged at the upper part of the side wall of the needle washing cylinder, and the lower liquid inlet is arranged at the lower part of the side wall of the needle washing cylinder.
[0010] The number of the upper liquid inlets is at least two, and each of the upper liquid inlets is centrally symmetrically arranged with respect to the needle washing channel.
[0011] The number of the lower liquid inlets is at least two, and each lower liquid inlet is centrally symmetrically arranged with respect to the needle washing channel.
[0012] The needle washing cylinder is also provided with an overflow channel, the inner end of the overflow channel is communicated with the upper part of the needle washing channel, and the connection point between the overflow channel and the needle washing channel is lower than the needle inlet, and the outer end of the overflow channel forms an overflow port.
[0013] The connection point between the overflow channel and the needle washing channel is higher than each liquid inlet.
[0014] The needle washing cylinder is locked with the washing frame by screws.
[0015] The upper edge of the needle entry port forms an outwardly convex stop edge.
[0016] After adopting the above scheme, the needle washing assembly of the utility model is provided with a cleaning agent container for containing cleaning agent on the basis of the needle washing cylinder, so that the sampling needle can absorb the cleaning agent in the cleaning agent container and effectively clean the inner wall of the sampling needle, so that the sampling needle can achieve a good cleaning effect. After cleaning the inner wall of the sampling needle, the cleaning agent absorbed by the sampling needle is discharged through the waste liquid port of the needle washing cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model.
[0018] Figure 2 It is a cross-sectional view of the utility model.
[0019] Figure 3 It is a schematic diagram of the use of the utility model.
[0020] Description of labels:
[0021] Cleaning rack 1, placing cylinder 11,
[0022] Washing needle cylinder 2, washing needle channel 20, needle inlet 21, stopper edge 211, waste liquid outlet 22, upper liquid inlet 23, lower liquid inlet 24,
[0023] Cleaning agent container 3,
[0024] Sampling needle A. DETAILED DESCRIPTION
[0025] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.
[0026] like Figures 1 to 3 As shown, the utility model discloses a needle washing assembly, which includes a cleaning rack 1, a needle washing cylinder 2 matched with the cleaning rack 1, and a cleaning agent container 3 for accommodating a cleaning agent; the needle washing cylinder 2 is provided with a needle washing channel 20 which passes through from top to bottom, a needle inlet 21 is formed at the upper end of the needle washing channel 20, a waste liquid outlet 22 is formed at the lower end of the needle washing channel 20, and the needle washing cylinder 2 is also provided with at least one liquid inlet communicated with the needle washing channel 20.
[0027] In the present invention, the needle washing assembly of the present invention is provided with a cleaning agent container 3 for containing cleaning agent on the basis of the needle washing cylinder 2, so that the sampling needle A can absorb the cleaning agent in the cleaning agent container 3 and effectively clean the inner wall of the sampling needle A, so that the sampling needle A can be well cleaned. After the cleaning agent absorbed by the sampling needle A cleans the inner wall of the sampling needle A, it is discharged through the waste liquid port 22 of the needle washing cylinder 2.
[0028] The following is an introduction to a cleaning method for the sampling needle A using the needle washing assembly of the utility model:
[0029] First cleaning: the sampling needle A is first inserted into the needle washing channel 20 of the washing syringe 2 from the needle inlet 21 of the washing syringe 2; then the external cleaning liquid is input into the needle washing channel 20 from the liquid inlet of the washing syringe 2 to clean the washing syringe 2; after the cleaning is completed, the cleaning liquid in the needle washing channel 20 is discharged from the waste liquid port 22, and the sampling needle A exits the needle washing channel 20;
[0030] Second cleaning: sampling needle A first absorbs the cleaning agent in the cleaning agent container 3; then sampling needle A is inserted into the needle washing channel 20 of the washing syringe 2 from the needle inlet 21 of the washing syringe 2; then, the external cleaning liquid is input into the needle washing channel 20 from the liquid inlet of the washing syringe 2 to clean the washing syringe 2, and the sampling needle A discharges the cleaning agent into the needle washing channel 20; after the cleaning is completed, the cleaning liquid and cleaning agent in the needle washing channel 20 are discharged from the waste liquid port 22, and the sampling needle A exits the needle washing channel 20.
[0031] In an embodiment of the utility model, in order to ensure a better cleaning effect, the cleaning substance concentration of the cleaning agent is greater than the cleaning substance concentration of the cleaning liquid, and the cleaning liquid can be prepared by diluting the cleaning agent with water; the external cleaning liquid can be drawn into the needle washing channel 20 by a cleaning pump connected to the liquid inlet, and the cleaning liquid and cleaning agent in the needle washing channel 20 can be drawn out by a waste liquid pump connected to the waste liquid port 22.
[0032] In the embodiment of the utility model, the cleaning agent container 3 is detachably matched with the cleaning rack 1 so that the cleaning agent can be directly replenished by directly replacing the cleaning agent container 3, which is convenient for use. Specifically, the cleaning rack 1 is provided with a placement cylinder 11, and the cleaning agent container 3 is placed in the placement cylinder 11, so that the cleaning agent container 3 is easy to take and put.
[0033] In the embodiment of the utility model, the syringe washing cylinder 2 can be locked with the cleaning frame 1 by screws to ensure that the syringe washing cylinder 2 is firmly installed.
[0034] In the embodiment of the utility model, the upper edge of the needle inlet 21 of the needle washing cylinder 2 forms an outwardly protruding stop edge 211, and the stop edge 211 is used to prevent the cleaning liquid from overflowing from the needle inlet 21.
[0035] In the embodiment of the utility model, the liquid inlet of the needle washing cylinder 2 is divided into an upper liquid inlet 23 and a lower liquid inlet 24, the upper liquid inlet 23 is arranged at the upper part of the side wall of the needle washing cylinder 2, and the lower liquid inlet 24 is arranged at the lower part of the side wall of the needle washing cylinder 2; such arrangement enables the external cleaning liquid to enter the needle washing channel 20 more quickly, and at the same time, the input cleaning liquid can form a strong impact on the upper and lower parts of the sampling needle A, thereby ensuring the cleaning effect. Further, the number of the upper liquid inlets 23 is at least two, and each upper liquid inlet 23 is centrally symmetrically arranged with respect to the needle washing channel 20, so that the cleaning liquid input from each upper liquid inlet 23 can form a more powerful impact on the upper part of the sampling needle A, thereby further ensuring the cleaning effect; similarly, the number of the lower liquid inlet 24 is at least two, and each lower liquid inlet 24 is centrally symmetrically arranged with respect to the needle washing channel 20, so that the cleaning liquid input from each lower liquid inlet 24 can form a more powerful impact on the lower part of the sampling needle A, thereby further ensuring the cleaning effect.
[0036] Furthermore, the needle washing cylinder 2 may also be provided with an overflow channel (not shown), the inner end of the overflow channel is connected to the upper part of the needle washing channel 20, and the connection point between the overflow channel and the needle washing channel 20 is lower than the needle inlet 21, and the outer end of the overflow channel forms an overflow port; the utility model can prevent the washing liquid from overflowing from the needle inlet 21 through the overflow channel. In addition, the connection point between the overflow channel and the needle washing channel 20 is higher than each liquid inlet, so as to avoid the washing liquid input from the liquid inlet being directly discharged from the overflow channel, resulting in a waste of washing liquid.
[0037] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.
Claims
1. A needle washing assembly, characterized in that: It includes a cleaning rack, a syringe washing cylinder matched with the cleaning rack, and a cleaning agent container for accommodating cleaning agent; the syringe washing cylinder is provided with a needle washing channel which runs through from top to bottom, the upper end of the needle washing channel forms a needle inlet, the lower end of the needle washing channel forms a waste liquid outlet, and the syringe washing cylinder is also provided with at least one liquid inlet which communicates with the needle washing channel.
2. A needle washing assembly according to claim 1, characterized in that: The cleaning agent container is detachably matched with the cleaning rack.
3. A needle washing assembly according to claim 2, characterized in that: The cleaning rack is provided with a placing cylinder, and the cleaning agent container is placed in the placing cylinder.
4. A needle washing assembly according to claim 1, characterized in that: The liquid inlet of the needle washing cylinder is divided into an upper liquid inlet and a lower liquid inlet. The upper liquid inlet is arranged at the upper part of the side wall of the needle washing cylinder, and the lower liquid inlet is arranged at the lower part of the side wall of the needle washing cylinder.
5. A needle washing assembly according to claim 4, characterized in that: The number of the upper liquid inlets is at least two, and each of the upper liquid inlets is centrally symmetrically arranged with respect to the needle washing channel.
6. A needle washing assembly according to claim 4, characterized in that: The number of the lower liquid inlets is at least two, and each lower liquid inlet is centrally symmetrically arranged with respect to the needle washing channel.
7. A needle washing assembly according to claim 1, characterized in that: The needle washing cylinder is also provided with an overflow channel, the inner end of the overflow channel is communicated with the upper part of the needle washing channel, and the connection point between the overflow channel and the needle washing channel is lower than the needle inlet, and the outer end of the overflow channel forms an overflow port.
8. A needle washing assembly according to claim 7, characterized in that: The connection point between the overflow channel and the needle washing channel is higher than each liquid inlet.
9. A needle washing assembly according to claim 1, characterized in that: The needle washing cylinder is locked with the washing frame by screws.
10. A needle washing assembly according to claim 1, characterized in that: The upper edge of the needle entry port forms an outwardly convex stop edge.