Ligature needles are related to tools for connecting tissues. They, like ordinary needles, contain a needle for insertion of a thread and have a special semicircular canopy, which is just allowed to sew fabrics in the transverse direction of rounded tissues (stomach, intestine, etc.). They are divided into two types:
1 - stupid ligature needle - needle of Deschan - used in tissues with a soft consistency of the piercing organ;
2 - acute ligature needle - Cooper needle allows you to sew in a semicircle, not only internal organs, but also connective tissue and skin.