Large-caliber series self-converging tissue lens focusing radiator

Abstract

The invention relates to a microwave radiator for microwave physical therapy of human tissues, in particular to a large-caliber series self-converging tissue lens focusing radiator and belongs to the technical field of microwave physical therapy. According to the series radiator, a pyramidal horn antenna with operating frequency of 2,450 MHz is used, and different large-caliber sizes are selected according to different application parts. The opening surface of the radiator is designed according to a lens antenna, microwaves can be converged at deep tissues by utilizing a human tissue lens which is naturally formed a high relative dielectric constant of the human tissues during clinical application, and the radiator has a certain capacity of heating the deep tissues through good heat transport and heat conduction functions of the tissues; and therefore, a clinical application range of 2,450 MHz microwave is greatly widened.

Description

technical field [0001] The invention relates to a microwave radiator used for microwave physiotherapy of human tissue, in particular to a large-diameter series self-converging tissue lens focusing radiator, which belongs to the technical field of microwave physiotherapy. Background technique [0002] At present, in the field of microwave physical therapy technology, microwave therapeutic instruments used for microwave physical therapy of human tissue usually use three operating frequencies of 2450MHz, 915MHz, and 433MHz. The physical penetration depths are 1.7cm, 3cm, and 3.6cm respectively, and the tendency of fat overheating increases successively during the treatment. Although the 915MHz and 433MHz microwaves penetrate deeper, but because the microwave source is relatively expensive and the price of the whole machine is relatively high, they are generally used for microwave hyperthermia, but the cost is too high for physical therapy, which is not easy for patients to acce...

AI Technical Summary

Problems solved by technology

Although the 915MHz and 433MHz microwaves penetrate deeper, but because the microwave source is more expensive and the price of the whole machine is higher, it is generally used for microwave hyperthermia, and the cost is too high for physical therapy, which is not easy for patients to accept

The 2450MHz microwave source is cheap and widely used clinically. However, due to the shallow penetration depth, most of them are dipole radiators and a small amount of microstrip radiators, and the caliber is too small, the clinical application is greatly limited.

Compared with waveguide radiators, the thermal field distribution of dipole and microstrip radiators is uneven, and hot spots are easily formed; the vertical electric field component is larger, which increases the tendency of fat overheating; because it does not generate plane waves, it further reduces heating depth

Therefore, 2450MHz microwave can only be used for physical therapy of small-scale superficial tissue

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