An infusion device includes a hollow needle with a tube that confirms puncturing of blood vessel by observing blood through the tube, as a result of which the hollow needle is withdrawn from the blood vessel and repositioned on the visceral organ. This repositioning continues till no blood is observed in the tube. Thereafter the vasopressin is infused by the infusion device into the tissue mass, thus ensuring that the solution like vasopressin is infused into the fibroid and not directly into the blood vessel.