Patent ID: 7846173

Claim:
A puncturing guidance tube for a long and fine needle in combination with the long and fine needle, comprising: said long and fine needle ( 20 ), a cylindrical body having a long tubal-shape consisting of a head portion, an upper portion ( 31 ), a lower portion ( 32 ), a transition portion and a needle gateway ( 33 ), said head portion of the cylindrical body forming a funnel shaped rim, said upper portion ( 31 ) of the cylindrical body having a large diameter, said lower portion ( 32 ) of the cylindrical body having a small diameter, said transition portion of the cylindrical body disposed between the upper portion and the lower portion, wherein the large diameter is gradually reduced to the small diameter, and said needle gateway ( 33 ) of the cylindrical body formed a lateral opening vertically all along the cylindrical body for easily removing the puncturing guidance tube from an operating needle, so that the long and fine needle can be punctured without buckling during an initial operation of the puncturing.