The core component to ensure the accuracy of IVD testing equipment is the sampling needle

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IVD (In Vitro Diagnostics) detection instrument is a type of equipment used for in vitro detection of biomolecules and substances in the human body. In the IVD testing process, the sampling needle is a very important component, which can accurately sample and transport the sample to the testing instrument, thus ensuring the accuracy and precision of the testing results. This article will focus on the topic of IVD testing instrument injection needles.

1. The basic principle of the sampling needle

 

A sampling needle is a tool used to take a sample and deliver it to a testing instrument. It usually consists of a needle, plunger and handle. During sampling, the handle is depressed, moving the plunger, which draws the sample into the needle. During delivery of the sample into the testing instrument, the handle is depressed, moving the plunger, which pushes the sample out of the needle.

 

The sampling needle is usually made of stainless steel, ceramics and other materials, which have good corrosion resistance and high temperature resistance, and can ensure the purity and pollution-free of the sample. Needles also vary in size, with different instruments requiring different sized needles.

 

2. The role of the sample needle

 

The sampling needle plays an important role in the IVD testing instrument. It can accurately sample and deliver the sample to the testing instrument, thus ensuring the accuracy and precision of the testing results. Needle precision and accuracy are critical to IVD test results, as even small errors can lead to inaccurate or invalid test results.

 

Improve the accuracy and precision of test results

The sampling needle can accurately sample and transport the sample to the testing instrument, thus ensuring the accuracy and precision of the testing results. The design and manufacture of the sampling needle must strictly follow the standard specifications to ensure the precision and accuracy of the sampling needle. At the same time, the sampling needle also needs to be cleaned and maintained frequently to keep it in good working condition.

 

Improve work efficiency

The sampling needle can quickly take samples and transport samples to the detection instrument, thereby improving work efficiency. In high-traffic laboratories, accurate sample sampling and delivery is very important as it can greatly reduce laboratory staff workload and experiment time. At the same time, the high precision and high accuracy of the injection needle can enable the experimenter to process the sample more quickly, thereby saving time and labor costs.

 

reduce mistakes

The sampling needle can accurately sample and transport the sample to the detection instrument, thereby reducing experimental errors. In medicine and life sciences, errors can lead to misdiagnosis, false negatives, or false positives, which can have a significant impact on patient care and outcomes. Therefore, the high precision and high accuracy of the sampling needle are very important to reduce the error.

 

3. Types of sampling needles

 

The sampling needle can be divided into different types according to the needs of different samples and testing instruments. Here are some common syringes:

 

fixed volume needle

Fixed-volume syringes are typically used to take fixed-volume samples. They can be replaced or cleaned as needed to ensure no cross-contamination between different samples.

 

Adjustable volume needle

Adjustable volume needles are often used to take samples of different volumes. These syringes feature an adjustable volume controller that can be adjusted as needed.

 

multi-channel injection needle

Multichannel syringes are typically used to process multiple samples simultaneously. They feature multiple needles to allow multiple samples to be sampled simultaneously, increasing productivity.

 

Automatic sampling needle

Autosamplers are commonly used in high-throughput laboratories. They automate sample sampling and delivery, reducing laboratory staff workload and experiment time.

 

1. Precision machining of sample needle

 

The sampling needle is a very important part of the IVD testing instrument, and its design and processing require precision and accuracy. The sampling needle is usually made of high-strength stainless steel or other metal materials, which require multiple precision machining processes to be made.

 

First of all, the sampling needle needs to be modeled in 3D by CAD software, so that the designer can accurately calculate the size and shape of each part. Then, the sampling needle needs to be precisely machined by CNC machine tools to ensure the accuracy and consistency of the size and shape of each part.

 

The processing of the sampling needle also requires surface treatment to prevent sample contamination and cross-infection. Some surface preparation methods include electrochemical polishing, sandblasting, and electrochemical deposition, among others.

 

2. The importance of precision machining of sample needles

 

The precision machining of the injection needle is crucial to the accuracy and reliability of the IVD testing instrument. The following are some of the importance associated with needle precision machining:

 

accuracy

The accuracy of the syringe is very important. The sampling needle needs to be able to accurately sample and deliver the sample to the testing instrument, so as to ensure the accuracy of the testing results. Improper needle machining can lead to errors and inaccurate results.

 

reliability

The reliability of the sampling needle refers to its performance stability and durability. Syringes need to be able to withstand repeated use and testing under high stress conditions to ensure long-term reliability and performance stability.

 

safety

Syringes need to have good surface finish and material quality to ensure that samples are not contaminated or cross-contaminated. Syringes need to be resistant to corrosion and oxidation to ensure sample safety.

 

In addition, in order to ensure the accuracy and stability of the sampling needle, multiple inspections and adjustments are required during the processing to ensure its accuracy and consistency. Therefore, the precision machining of the sampling needle also requires high-level technical and equipment support to ensure the quality and performance of the product.

 

Dongguan Zhaoheng Machinery focuses on the processing of high-end precision parts at home and abroad. We are a reliable supplier. We have advanced processing equipment and technology from all over the world, as well as a complete quality assurance system and strict quality inspection process.

 

In short, the precision processing of the sample needle of the ivd detection instrument is very important for the accuracy and reliability of the ivd detection. Choosing a professional supplier of sample needles can ensure the accuracy and consistency of sample needles, and ultimately improve the accuracy and reliability of IVD testing, making contributions to the development of human health.