Microwave ablation antenna based on spiral slit structure
A microwave ablation and helical technology, which is applied in microwave surgical instruments, parts of surgical instruments, medical science, etc., can solve the problems of burning tail effect, long groove length, small roundness, etc., and achieves small backward radiation and easy processing , high-strength effect
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[0031] In this embodiment, a microwave ablation antenna with a planar structure in the 2.45 GHz frequency band is designed and manufactured using coaxial line processing technology.
[0032] figure 1 It is a structural diagram of an embodiment of the present invention, which mainly includes an ablation needle 1 and a semi-rigid coaxial needle shaft 2; in this embodiment, the ablation needle 1 is a cone as a whole, with a metal cone inside, a bottom diameter of 2mm, and a height of 1mm , The outer layer is covered with the insulating dielectric layer 3, the material is Teflon, which has sufficient mechanical strength and puncture force, and can prevent adhesion and does not fall off. It forms a cone with a bottom diameter of 2mm and a height of 2mm.
[0033] The inside of the semi-rigid coaxial wire needle bar 2 is an inner conductor 5 with a cylindrical structure, and the outer layer is sequentially covered with a dielectric layer 4, an outer conductor 6 and an ins...
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