Depth setting device for sample suction needle

Abstract

The utility model discloses a sample suction needle depth setting device which comprises a sample suction needle and a depth setting clamping block, a bent end of the sample suction needle is sleeved with a hoop, the hoop is provided with an elastic piece, the tail end of the elastic piece is provided with a protrusion, the depth setting clamping block is in a step shape, each step is provided with a groove, and each step of the depth setting clamping block is engraved with a corresponding depth. The step-shaped depth-keeping clamping block is arranged, each step corresponds to different depths, the protrusions on the elastic piece are matched with the grooves of the depth-keeping clamping block to position the depth of the sample suction needle, the redundant length of the sample suction needle can be directly cut off, and the effects of being easy to operate and high in positioning precision are achieved.

Description

Technical Field

[0001] This utility model relates to the field of drug dissolution testing technology, specifically to a sampling needle depth-fixing device. Background Technology

[0002] In the process of drug dissolution testing, rapid and accurate sampling is an important step. The current method of determining the depth of the sampling needle is generally to use a ruler or positioning plate, which has problems such as low positioning accuracy, large human operation error, and the need for repeated confirmation during the sampling process. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a sampling needle depth-fixing device that enables accurate positioning, is easy to adjust, and ensures a stable and reliable sampling process.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sampling needle depth fixing device, comprising a sampling needle and a depth fixing block, wherein a clamp is fitted on the bent end of the sampling needle, an elastic sheet is provided on the clamp, and a protrusion is provided at the end of the elastic sheet, and the depth fixing block is stepped and each step is provided with a groove, and each step of the depth fixing block is engraved with a corresponding depth.

[0005] The sampling needle is also fitted with an isolation plate, which is located at the lower end of the clamp.

[0006] The sampling needle is made of corrosion-resistant plastic.

[0007] The width of each step of the depth-fixed block is the same as the width of the sampling needle.

[0008] The depth-fixing block is made of corrosion-resistant plastic.

[0009] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model sets up a stepped depth-fixing block, with each step corresponding to a different depth. The protrusion on the elastic sheet cooperates with the groove of the depth-fixing block to achieve the positioning of the sampling needle depth. The excess length of the sampling needle can be directly cut off, achieving the effect of easy operation and high positioning accuracy. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings:

[0011] Figure 1 This is a front view of the present invention;

[0012] Figure 2 This is a side view of the present invention;

[0013] In the diagram: 1. Sampling needle; 2. Depth fixing block; 3. Clamp; 4. Elastic sheet; 5. Isolation sheet; 201. Groove; 401. Protrusion. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0015] The technical solution of this utility model will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0016] Example 1

[0017] like Figures 1 to 2 As shown, this utility model provides a sampling needle depth fixing device, including a sampling needle 1 and a depth fixing block 2. The bent end of the sampling needle 1 is fitted with a clamp 3, and the clamp 3 is provided with an elastic piece 4. The end of the elastic piece 4 is provided with a protrusion 401. The depth fixing block 2 is stepped, and each step is provided with a groove 201. Each step of the depth fixing block 2 is engraved with a corresponding depth. The sampling needle 1 is also fitted with an isolation piece 5, which is located at the lower end of the clamp 3. The sampling needle 1 is made of corrosion-resistant plastic. The width of each step of the depth fixing block 2 is the same as the width of the sampling needle 1. The depth fixing block 2 is made of corrosion-resistant plastic.

[0018] In use, first, place the clamp 3 on the bent part of the sampling needle 1, then place the separator 5 on the sampling needle 1. The function of the separator 5 is mainly to maintain the distance between the sampling needle 1 and the dissolution cup wall, so as to avoid errors in the results due to improper sampling position. Then, break open the elastic sheet 4 and place the depth-fixing block 2 between the elastic sheet 4 and the sampling needle 1. Select different steps of the depth-fixing block 2 according to the required depth. Finally, make the protrusion 401 on the elastic sheet 4 cooperate with the groove on the selected step on the depth-fixing block 2 to achieve the positioning of the depth of the sampling needle 1. Since the sampling needle 1 is made of corrosion-resistant plastic, the part of the sampling needle 1 that exceeds the required depth can be directly cut off. At the same time, the use of corrosion-resistant plastic is low-cost, can be used for single use, avoids cross-contamination, and can save cleaning and drying time, ensuring experimental efficiency.

[0019] The above scheme has a simple overall structure, is easy to operate, improves experimental efficiency, and ensures measurement accuracy.

[0020] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A sampling needle depth-fixing device, characterized in that, It includes a sampling needle (1) and a depth-fixing block (2). The sampling needle (1) is fitted with a clamp (3) at its bent end. The clamp (3) is provided with an elastic sheet (4). The end of the elastic sheet (4) is provided with a protrusion (401). The depth-fixing block (2) is stepped and each step is provided with a groove (201). Each step of the depth-fixing block (2) is engraved with a corresponding depth.

2. The sampling needle depth-fixing device according to claim 1, characterized in that, The sampling needle (1) is also fitted with an isolation plate (5), which is located at the lower end of the clamp (3).

3. The sampling needle depth-fixing device according to claim 1, characterized in that, The sampling needle (1) is made of corrosion-resistant plastic.

4. The sampling needle depth-fixing device according to claim 1, characterized in that, The width of each step of the depth-fixed block (2) is the same as the width of the sampling needle (1).

5. The sampling needle depth-fixing device according to claim 1, characterized in that, The depth-fixed block (2) is made of corrosion-resistant plastic.

Images