English
Views: 0 Author: Site Editor Publish Time: 2023-02-13 Origin: Site
We all know that the sampling swab is mainly used for the collection of clinical test specimens. Therefore, it seems that there is not much understanding of flocking swabs. So let's learn some knowledge about flocking swabs.
Flocked swabs are also called nylon flocking sampling swabs, which are not cotton swabs but are made of polyester or nylon fibers. The flocking swab consists of three parts: a handle, a corner, a casting rod, and a sampling head. Its sampling head, that is, nylon fiber, is fixed on the surface of the medical ABS rod through a certain process to form a brush head. The brush head is used for DNA collection, which can be used for sampling the natural cavity of the human body such as the oral cavity, nasopharynx, etc., and can also be used for laboratory testing.
Flocked swabs are medical devices, the production environment and requirements are very strict, and there are also relevant standards for quality supervision. The most basic standard is non-toxic and harmless. Harmful substances will not be produced during the production of sampling swabs.
From the enlarged picture of the sampling head below, we can see that the short nylon fibers are evenly distributed on the sampling head, like a brush. In this way, the sample will not be dispersed and retained in the fiber, which is conducive to faster and more efficient elution. Traditional cotton swabs cannot completely collect and elute saples, while flocked swabs can elute 95% of samples. Therefore, the use of flocked swabs has great advantages for various sample collection applications.
① Sampling is comfortable and easy to use.
The function of the vertical nylon fibers is similar to that of a soft brush, and the use of this soft brush during the sampling process makes the user feel no foreign body sensation. At the same time, the flocking swabs used in different parts adopt different breaking points, and the rods adopt different thicknesses to make the softness different.
For example, the nasal swab has a thinner and softer upper end of the stem, and a longer breaking point, which fully fits the ergonomics.
The sample remains on the surface, making elution easier. The collection and release volume of the traditional wound cotton swab is much larger. Experimental studies have shown that the collection and release volume of the flocked swab can reach 95% of the sample, and the adsorbed pathogens are almost completely released. In particular, it has obvious advantages in the ability to release cells, microorganisms, and viruses, while cotton swabs only have about 20%. Because most of the samples collected by cotton swabs are easily trapped in the fibrous matrix layer of the head when they are released, they are not easy to release or release a small amount.
In order to limit the damage to the sample and improve the accuracy of the test, the cotton swab is made of completely inert materials. Because the cotton swab contains a variety of fatty acids, and it may "poison" the pathogen when it is in contact with the pathogen for a long time. Originally, the ability of cotton swabs to catch pathogens was relatively inferior due to structural disadvantages, and it also has the "superpower" to "kill" some pathogens by itself, which will lead to a sharp decrease in the number of released pathogens, which may produce false negative consequences. The flocked swab is PCR compatible, and the study found that the flocked nylon swab can increase bacterial viability by 20% to 60%, and does not contain RNase and DNase.
A flocking swab is a sampling tool made of medical materials, a nylon fiber sampling head, and an ABS rod. It is often used in clinical diagnosis, medical testing, laboratory, laboratory, laboratory, CDC, forensic, Scientific research, and other purposes, and has great advantages in various aspects.
