MULTI-SLOT MICROWAVE ABLATION NEEDLE

A multi-slot microwave ablation needle, comprising an antenna radiation area (100) and a water cooling system for the ablation needle. The antenna radiation area (100) comprises a metal needle (110), a transmission area casing (120), and a semi-steel coaxial cable (130); the transmission area casing (120) is made of a high-temperature resistant material having a relative dielectric constant of 28-32, and comprises a stepped through hole; the semi-steel coaxial cable (130) comprises a coaxial cable outer conductor (133), a coaxial cable inner conductor (131), and a coaxial cable insulation layer (132); the coaxial cable outer conductor (133) and the insulation layer (132) of the semi-steel coaxial cable (130) at two positions are stripped, and the two positions are filled with a high-temperature resistant material having a relative dielectric constant of 25-35, so that a first transmission window (122) and a second transmission window (123) are formed in the transmission area casing (120); the stepped through