Surgical suture (commonly called stitches) is a medical device used to hold body tissues together after an injury or surgery. Application generally involves using a needle with an attached length of thread. Suture thread is made from numerous materials. The original sutures were made from biological materials, such as catgut suture and silk. Mumbai Suture Manufacture the original suture,Catgut Suture were made from submucosal layer of bovine intestine.