Microwave hyperthermia therapy radiator and microwave hyperthermia therapy device

Abstract

The invention relates to a microwave hyperthermia therapy radiator and a microwave hyperthermia therapy device. The microwave hyperthermia therapy radiator comprises a radiator body and a meta-material panel disposed on the radiator body. The meta-material panel comprises at least a meta-material lamina which includes a sheet substrate and a plurality of artificial microstructures disposed on the substrate. Refractive index distribution of each meta-material lamina is the same. The meta-material lamina comprises a circular area and a plurality of annular areas which has a same center with the circular area. In the circular area and the annular areas, the refractive index reduces continuously with increasing radius and the refractive index is the same when the radiuses are the same. In the plurality of areas, at least two adjacent areas exist, a first area and a second area. In the first area, the refractive index continuously reduces from n1 to n2 with increasing radius, and in the second area, the refractive index continuously reduces from n3 to n4 with increasing radius, wherein n3>n2 is satisfied. The microwave hyperthermia therapy radiator and the microwave hyperthermia therapy device make microwave energy concentrate on diseased regions, thereby reducing damage of normal tissues and improving thermotherapy efficiency.

Description

technical field [0001] The invention relates to microwave hyperthermia technology, more specifically, to a microwave hyperthermia radiator and a microwave hyperthermia device. Background technique [0002] The irradiation of organisms by microwaves will produce a thermal effect, and tumor cells can be directly killed by high temperature. Therefore, microwave hyperthermia is usually used to treat tumors. The reason why microwaves irradiate the human body produce microwave biological effects is that various tissues of the human body have natural frequencies. When the microwave frequency is the same as the natural frequency of a certain tissue, the tissue will produce resonant absorption. Biological effects occur when the energy absorbed by the tissue exceeds a certain deduction threshold. The main reasons for the good effect of microwave hyperthermia are as follows: [0003] (1) Microwave hyperthermia means that after the microwave is irradiated to the lesion, the lesion ab...

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Problems solved by technology

[0005] (3) Microwave hyperthermia can diagnose the lesion, but other hot compress treatment methods cannot: if the lesion is inflammation, the microvessels in the lesion will be narrowed due to the compression of the inflamed tissue, resulting in poor blood circulation. It is unavoidable to irradiate the healthy tissue adjacent to the diseased part at the same time, that is, the diseased tissue and healthy tissue are heated by microwave at the same time.

[0007] However, in the current microwave hyperthermia process, in addition to irradiating the lesion, it will also irradiate healthy tissues adjacent to the lesion, causing damage to normal tissues. In addition, due to the low degree of microwave energy convergence, hyperthermia The effect is not good, and the heating time is longer, which is an undesirable result. Therefore, a microwave hyperthermia technology that can reduce normal tissue damage and improve the efficiency of thermotherapy is needed

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