Straight scalpels are used to cut or excise soft tissues and make an incision with the expectation of subsequent comparison (fixation) of the edges of the tissues when suturing the wound, therefore, before the operation, it is necessary to give patients the appropriate information about their purpose both before and during the operation, skillfully combine the work of surgeons with the work of an operating room nurse, i.e. prevent the formation of air pockets. A scalpel, like a razor, is a surgical object. A surgical instrument should be used in a special medical institution (clinic or hospital), since this is absolutely necessary for human safety, because there are quite complex operations that require an immediate decision from a surgeon, which is impossible at home, where a person is left to his own devices for a long time . Therefore, this item should not be used where it could fall into the wrong hands.