In the present investigation, Ultrasonic characterization on artificially removed (in and around Chidambaram town) human renal stones are studied to determine further the design parameters such as sonic velocity, specific acoustic impedance and modulus of elasticity etc., to develop a kidney stone disintegrator. Due to the variation in the chemical composition of the stones, a large variation in the value of ultrasonic parameters is found. The results give the necessary information about the ultrasonic propagation in different type of renal stones