Syringe with filtering function

Abstract

A syringe with a filtering function comprises a syringe body and a retaining plate with a filter screen. The retaining plate with the filter screen is arranged in the syringe body and partitions the syringe body into a first portion and a second portion. The first portion is a first inner cavity between a piston rod of the syringe body and the retaining plate with the filter screen, and the second portion is a second inner cavity between the retaining plate with the filter screen and an injection port of the syringe body.

Description

technical field [0001] The invention relates to an injector, in particular to an injector which can quickly and conveniently separate fat and liquid and discharge one of them with filtering function. Background technique [0002] At present, fat grafting is already a mature plastic surgery method. Due to the continuous research and improvement of transplantation technology in recent years, it has now become a widely used clinical method, which can be used for breast augmentation, depressed scar filling, temporal depression filling, forehead filling, cheek filling, apple muscle filling , chin filling, etc., are welcomed by beauty seekers. [0003] Fat grafting mainly includes two steps: one is the extraction and processing of adipose tissue, and the other is the processed fat grafting. In the previous step, there are two cases: for large-volume transplantation, instrument extraction is mainly used, and traditional negative pressure liposuction equipment is used to extract h...

AI Technical Summary

Problems solved by technology

In the previous step, there are two cases: for large-volume transplantation, instrument extraction is mainly used, and traditional negative pressure liposuction equipment is used to extract hundreds of milliliters of fat and then processed. It is mainly used for breast augmentation and large-scale depression. Filling, although the amount of fat transplanted in such cases is relatively large, the number of clinical cases is relatively small; a large number of common clinical cases are small-volume fat grafting, mainly including filling of local facial depressions, such as the temporal region, apple muscle and For the forehead and other parts, it is often only necessary to extract a small amount of tens of milliliters of fat during these operations. Generally, a syringe combined with manual negative pressure is used for suction. The extracted fat is washed with physiological saline several times in the syringe. The process is time-consuming and labor-intensive, and is prone to bacterial contamination, which is one of the key steps to ensure the success of the operation

Therefore, clinically, a 20ml syringe is generally used for fat suction. After the fat is sucked with negative pressure, the front end of the syringe is tightened with the original injection needle and cap, and then inverted so that the mixture of fat and water in the syringe Layered due to different densities, water accumulates in the lower layer due to high density, and fat is located in the upper layer. After the layering is clear, take off the needle and cap to release the water, and then suck in the normal saline and mix it and let it stand. Repeat this for many times. Generally, it takes about five to ten times until there are no blood cells in the outflowing water. The key is that repeatedly pulling out the needle and cap will increase the chance of bacterial contamination, and at the same time, careless operation may also cause fat loss.

Images