Patent ID: 6672095
Filing Date: 2004-01-06
Classification: A61B,C09K,F25B

Abstract:
A therapeutic freezing device to be used in combination with a coolant medium and insertable into an abnormal tissue of a patient to freeze and destroy the tissue, comprising:a barrel defining a receiving space adapted to receive the coolant medium; and a superconducting needle mounted on said barrel, wherein said superconducting needle includes a hollow body and a superconducting layer made of a superconductive material, disposed in said hollow body and forming a superconductor lining on an inner wall surface of said hollow body, said superconducting needle having a contacting end portion received within said receiving space of said barrel, and a freezing end extending out of said barrel, said contacting end portion and said freezing end being sealed fluidly so that no coolant medium enters into said hollow body.