Sample needle convenient to replace

Abstract

The utility model discloses a convenient to replace sample needle, including circuit box and needle tube, the needle tube is installed on the circuit box, the needle tube includes inner needle tube and outer needle tube, the inner needle tube is worn in the outer needle tube, the inner needle tube is close to the end position and is connected with the inner pole piece who sets up, one side of the inner pole piece is close to the setting and is provided with the elastic sheet, the elastic sheet sets up in the circuit box, the utility model discloses the structure design is reasonable, convenient to use, and the setting of inner pole piece through the elastic sheet and circuit box and outer pole piece through bolt and circuit box and connect can be convenient for needle tube simple and quick and carry out the dismounting replacement.

Description

Technical Field

[0001] This utility model relates to the field of sample dispensing needles, and in particular to a sample dispensing needle that is easy to replace. Background Technology

[0002] The sampling needle is a commonly used component in biochemical analyzers, mainly used to transfer small or trace amounts of liquid. In existing conductive sampling needles, the inner and outer electrodes are usually an integral, non-separable structure, and the needle tube is also a single tube. Therefore, the needle tube, inner electrode, and outer electrode of the conductive sampling needle are not easy to disassemble and replace, and improvements are still needed. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a convenient sample dispensing needle replacement system, comprising a circuit box and a needle tube. The needle tube is mounted on the circuit box and includes an inner needle tube and an outer needle tube. The inner needle tube passes through the outer needle tube, and an inner electrode plate is connected to the inner needle tube near its end. A spring is abutted against one side of the inner electrode plate, and the spring is disposed inside the circuit box. An outer electrode plate is connected to the end of the outer needle tube.

[0004] Preferably, the end of the outer electrode is provided with a bolt and is fixed to the circuit box by the bolt.

[0005] The beneficial effects of this utility model are: the structure of this utility model is reasonable and easy to use. The design of connecting the inner electrode to the circuit box through a spring and the outer electrode to the circuit box through bolts can facilitate the simple and quick disassembly and replacement of the syringe. Attached Figure Description

[0006] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0007] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0008] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0009] Figure 3 This utility model Figure 2 A schematic diagram of a partial structure;

[0010] In the diagram: 1. Circuit box; 2. Outer needle tube; 3. Inner needle tube; 4. Outer electrode plate; 5. Bolt; 6. Inner electrode plate; 7. Spring. Detailed Implementation

[0011] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0012] Unless otherwise stated, any feature in this specification may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is merely one example of a series of equivalent or similar features.

[0013] like Figure 1 , 2 The sample dispensing needle shown in Figure 3 is easy to replace and includes a circuit box 1 and a needle tube. The needle tube is installed on the circuit box 1 and includes an inner needle tube 3 and an outer needle tube 2. The inner needle tube 3 passes through the outer needle tube 2. An inner electrode plate 6 is connected to the inner needle tube 3 near its end. A spring piece 7 is abutted against one side of the inner electrode plate 6. The spring piece 7 is located inside the circuit box 1. An outer electrode plate 4 is connected to the end of the outer needle tube 2.

[0014] The outer electrode 4 is provided with a bolt 5 at its end and is fixed to the circuit box 1 by the bolt 5.

[0015] During use, a spring piece 7 is provided on one side of the inner electrode plate 6, which facilitates the circuit box 1 to supply power to the inner needle tube 3; a bolt 7 is provided at the end of the outer electrode plate 4 and is fixed to the circuit box 1 by the bolt 7, which facilitates the circuit box 1 to supply power to the outer needle tube 2.

[0016] The beneficial effects of this utility model are: the structure of this utility model is reasonable and easy to use. The design of connecting the inner electrode to the circuit box through a spring and the outer electrode to the circuit box through bolts can facilitate the simple and quick disassembly and replacement of the syringe.

[0017] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A device for easy replacement of a sample dispensing needle, comprising a circuit box (1) and a syringe, characterized in that, The needle tube is installed on the circuit box (1). The needle tube includes an inner needle tube (3) and an outer needle tube (2). The inner needle tube (3) is inserted into the outer needle tube (2). An inner electrode plate (6) is connected to the inner needle tube (3) near its end. A spring plate (7) is abutted against one side of the inner electrode plate (6). The spring plate (7) is located inside the circuit box (1). An outer electrode plate (4) is connected to the end of the outer needle tube (2).

2. The sample dispensing needle for easy replacement according to claim 1, characterized in that, The outer electrode (4) is provided with a bolt (5) at its end and is fixed to the circuit box (1) by the bolt (5).

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