This tool is used in vaginal procedures to retract the anterior wall and expose the posterior wall by dilating the vagina. This gives the gynecologist a clear view of the body cavity so that he or she may understand what is happening and what to do next. When it comes to gynecological instruments, plastic materials are common, as they may only be used once. However, the sims retractor also comes available in stainless steel, in which case they must be sterilized after every use. These tools come in a variety of sizes to fit each patient appropriately.Sims Retractor – This tool is used in vaginal procedures to retract the anterior wall and expose the posterior wall by dilating the vagina. This gives the gynecologist a clear view of the body cavity so that he or she may understand what is happening and what to do next. When it comes to gynecological instruments, plastic materials are common, as they may only be used once. However, the sims retractor also comes available in stainless steel, in which case they must be sterilized after every use. These tools come in a variety of sizes to fit each patient appropriately.