A petal-shaped cavity radiator

Abstract

A petal-shaped cavity radiator includes an inner conductor, an outer conductor, and a shell. The lower end of the inner conductor is connected to a radio frequency connector. An insulator is provided on the outer side of the inner conductor. The lower end of the insulator is connected to the radio frequency connector. A protruding section is provided on the upper part of the insulator. The outer conductor is installed on the outer side of the insulator. The upper part of the outer conductor is staggered and protrudes outwards. The protruding section of the inner conductor matches the spatial structure formed by the long and short petals of the outer conductor. The shell is installed on the outer side of the outer conductor. In the petal-shaped cavity radiator of the present invention, the diameter of the upper part of the outer conductor is increased, which reduces reflection and improves the heating efficiency. Due to the use of petal-shaped staggered resonance output, the thermal field is more uniform and front-end radiation can be achieved, which effectively improves the treatment effect and scope of application. The outer conductor adopts petal-shaped coupling output, has a small diameter, is light in weight, and is easy to operate and use.

Description

Technical Field

[0001] The present invention relates to the field of medical devices. Background Art

[0002] Tumor hyperthermia therapy is a green treatment method that uses various methods to increase the temperature of the whole body or tumor tissue (locally) and utilizes thermal effects and their secondary effects to treat malignant tumors. It is the fifth largest treatment after surgery, radiotherapy, chemotherapy and immunotherapy.

[0003] Tumor hyperthermia, founded on modern scientific principles, flourished in the early 1960s and has achieved numerous breakthroughs. Numerous in vitro and clinical data demonstrate that while hyperthermia cannot replace surgery, chemotherapy, or radiotherapy as a standalone cancer treatment, it significantly enhances and complements these other treatments. Consequently, hyperthermia has rapidly developed in recent years, becoming a crucial cancer treatment option alongside surgery, radiotherapy, chemotherapy, and biological therapy.

[0004] Existing cavity radiators such as Figure 1 As shown, an outer conductor 6 is installed within the insulator 2, an inner conductor 9 is installed within the outer conductor 6, and a short-circuit plate 16 is installed between the outer conductor 6 and the inner conductor 9. A quarter-wavelength radiation hole 15 is longitudinally provided in the outer conductor 6, and an external housing 10 is provided. The cavity radiator uses a 26mm diameter RF connector, a 26mm outer conductor, a quarter-wavelength slot-coupled output, and short-circuit the inner and outer conductors. Radiation is achieved by utilizing the microwave transmission characteristics of a quarter-wave short-circuit equivalent to an open circuit. This radiator is large, with an external insulation diameter exceeding 30mm. It is heavy, has a large RF connector 1, and a thick and rigid cable, making it difficult to operate and use. Due to the short-circuit connection between the inner and outer conductors, no radiation is emitted from the front end, limiting the treatment range. Due to the slot output, the surrounding thermal field is uneven. Summary of the Invention

[0005] In order to solve the above-mentioned problems existing in the existing cavity radiator, the present invention provides a petal-type cavity radiator.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a petal-type cavity radiator, comprising an inner conductor 9, an outer conductor 6 and a shell 10, the lower end of the inner conductor 9 is connected to the RF connector 1, an insulator 2 is provided on the outside of the inner conductor 9, the lower end of the insulator 2 is connected to the RF connector 1, and a protruding section is provided on the upper part of the insulator 2; the outer conductor 6 is installed on the outside of the insulator 2, and the upper part of the outer conductor 6 is staggered and protruding outward. The protruding section of the inner conductor 6 matches the spatial structure formed by the outer conductor long petals 8 and the outer conductor short petals 7 of the outer conductor 6; the shell 10 is installed on the outside of the outer conductor 6.

[0007] The inner conductor 9 in the raised section of the insulator 2 is an inner conductor spiral vibrator 3 with a spiral structure.

[0008] The lower end of the insulator 2 is fixedly connected to the RF connector 1. A connecting thread 4 is provided on the outer side of the lower end of the insulator 2. The lower end of the outer conductor 6 is threadedly connected to the insulator 2. A shell fixing thread 5 is provided on the outer side of the lower end of the outer conductor 6. The lower end of the shell 10 is threadedly connected to the outer conductor 6.

[0009] The outer conductor 6 also includes an upper outer conductor long petal 12 and an upper outer conductor short petal 11. The upper ends of the arc-shaped upper outer conductor long petal 12 and the upper outer conductor short petal 11 are fixedly connected. The upper outer conductor long petal 12 and the upper outer conductor short petal 11 are installed on the upper part of the raised section of the inner conductor 9, and the upper outer conductor long petal 12 and the upper outer conductor short petal 11 are installed in an interlaced and inserted distribution with the lower outer conductor long petal 13 and the lower outer conductor short petal 14 of the outer conductor 6. The upper outer conductor long petal 12, the upper outer conductor short petal 11, the lower outer conductor long petal 13 and the lower outer conductor short petal 14 are fixed to the raised section of the insulator 2 by screws.

[0010] The petal-shaped cavity radiator of the present invention has an increased diameter of the upper part of the outer conductor, which reduces reflection and improves the heating efficiency. Due to the use of petal-shaped staggered resonance output, the thermal field is more uniform and front-end radiation can be achieved, effectively improving the treatment effect and scope of application; the outer conductor adopts petal-shaped coupled output, has a small diameter, light weight, and is easy to operate and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of an existing cavity radiator.

[0012] Figure 2 This is a diagram of the conductor structure of a petal-shaped cavity radiator according to an embodiment of the present invention.

[0013] Figure 3 This is a diagram of the outer conductor structure of a petal-shaped cavity radiator according to an embodiment of the present invention.

[0014] Figure 4 This is a structural diagram of the petal-shaped cavity radiator shell according to an embodiment of the present invention.

[0015] Figure 5 This is an overall structural diagram of a petal-shaped cavity radiator according to an embodiment of the present invention.

[0016] Figure 6 This is a diagram of the conductor structure of the petal-shaped cavity radiator according to the second embodiment of the present invention.

[0017] Figure 7 This is a structural diagram of the outer conductor of the petal-shaped cavity radiator according to the second embodiment of the present invention.

[0018] Figure 8 This is a diagram of the overall structure of the petal-shaped cavity radiator according to the second embodiment of the present invention.

[0019] In the figure: 1. RF connector, 2. insulator, 3. inner conductor spiral oscillator, 4. connecting thread, 5. outer shell fixing thread, 6. outer conductor, 7. outer conductor short lobe, 8. outer conductor long lobe, 9. inner conductor, 10. outer shell, 11. upper outer conductor short lobe, 12. upper outer conductor long lobe, 13. lower outer conductor long lobe, 14. lower outer conductor short lobe, 15. 1 / 4 wavelength radiation hole, 16. short-circuit plate. DETAILED DESCRIPTION

[0020] Example 1, petal-shaped cavity radiator such as Figure 2-5 As shown, the device comprises an inner conductor 9, an outer conductor 6, and a housing 10. The lower end of the inner conductor 9 is connected to the RF connector 1. An insulator 2 is provided on the outer side of the inner conductor 9, and the lower end of the insulator 2 is fixedly connected to the RF connector 1. A protruding section is provided on the upper portion of the insulator 2. The inner conductor 9 within the protruding section of the insulator 2 is a spiral inner conductor spiral vibrator 3. The outer conductor 6 is mounted on the outer side of the insulator 2. A connecting thread 4 is provided on the outer side of the lower end of the insulator 2. The lower end of the outer conductor 6 is threadedly connected to the insulator 2. The upper portion of the outer conductor 6 is staggered with outwardly protruding long and short outer conductor lobes 8 and 7. The protruding section of the inner conductor 6 matches the spatial structure formed by the long and short outer conductor lobes 8 and 7 of the outer conductor 6. The long and short outer conductor lobes 8 and 7 are fixed to the protruding section of the insulator 2 by screws. A housing 10 is mounted on the outer side of the outer conductor 6. The housing fixing thread 5 is provided on the outer side of the lower end of the outer conductor 6. The lower end of the housing 10 is threadedly connected to the outer conductor 6. The portion of the inner conductor 9 located within the protruding section of the insulator 2 is spiral, which improves heat radiation. The radiator's inner conductor 9 and petal-shaped outer conductor 6 form a staggered coupling output, resulting in resonant electromagnetic wave output. The diameters of the outer and inner conductors 6 and 9 are increased, and microwave impedance transformation reduces refraction. The radiated signal is dissipated from the coaxial line into the air, achieving thermal therapy for the lesion. This achieves front-end heat radiation and more uniform heat radiation.

[0021] Example 2, petal-shaped cavity radiator such as Figure 6-8As shown, it includes an inner conductor 9, an outer conductor 6 and a shell 10. The lower end of the inner conductor 9 is connected to the RF connector 1. An insulator 2 is provided on the outside of the inner conductor 9. The lower end of the insulator 2 is fixedly connected to the RF connector 1. A protruding section is provided on the upper part of the insulator 2. The outer conductor 6 is installed on the outside of the insulator 2. A connecting thread 4 is provided on the outer side of the lower end of the insulator 2. The lower end of the outer conductor 6 is threadedly connected to the insulator 2. The outer conductor 6 includes an upper outer conductor long petal 12 and an upper outer conductor short petal 11. The upper ends of the arc-shaped upper outer conductor long petal 12 and the upper outer conductor short petal 11 are fixedly connected. The upper outer conductor long petal 12 The upper outer conductor short petal 11 is mounted on the upper portion of the raised section of the inner conductor 9. The upper outer conductor long petal 12 and the upper outer conductor short petal 11 are interlaced and inserted with the lower outer conductor long petal 13 and the lower outer conductor short petal 14 of the outer conductor 6. The upper outer conductor long petal 12, the upper outer conductor short petal 11, the lower outer conductor long petal 13, and the lower outer conductor short petal 14 are fixed to the raised section of the insulator 2 by screws. A housing 10 is mounted on the outer side of the outer conductor 6. The outer side of the lower end of the outer conductor 6 is provided with a housing fixing thread 5. The lower end of the housing 10 is threadedly connected to the outer conductor 6. The housing is the same as in Example 1. The inner conductor 9 and the petal-shaped outer conductor 6 of the radiator form a staggered coupling output, which resonates with the electromagnetic wave. The diameters of the outer conductor 6 and the upper portion of the inner conductor 9 are increased, and microwave impedance transformation reduces refraction. The radiated signal is dissipated from the coaxial line to the air, achieving uniform heating of the lesion. The inner conductor 9 and the outer conductor 6 are made of copper or silver-plated copper.

[0022] The cavity radiator of this invention utilizes a 16mm microwave connector, a 10mm outer conductor, and an 18mm staggered petal-shaped coupling output. The insulator 2 has a reduced diameter of 22mm, reducing weight by two-thirds. The inner conductor (RF cable) diameter has been reduced from 13mm to 5mm, significantly enhancing ease of use. The petal-shaped radiator's outer radius, instead of being larger at the top and smaller at the bottom, reduces reflections and improves transmission efficiency. The petal-shaped staggered resonant output, with the inner conductor 1 / 4 wavelength inserted into the outer conductor 6, creates a highly uniform thermal field and enables front-end radiation, effectively enhancing therapeutic efficacy and the range of applications.

[0023] The present invention is described by way of example, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be within the scope of the present invention.

Claims

1. A petal-shaped cavity radiator, characterized in that: The invention comprises an inner conductor (9), an outer conductor (6) and an outer shell (10), wherein the lower end of the inner conductor (9) is connected to the radio frequency connector (1), an insulator (2) is provided on the outer side of the inner conductor (9), the lower end of the insulator (2) is connected to the radio frequency connector (1), and a protruding section is provided on the upper part of the insulator (2); the outer conductor (6) is installed on the outer side of the insulator (2), the upper part of the outer conductor (6) is staggered and protrudes outwards, and the protruding section of the inner conductor (9) matches the spatial structure formed by the outer conductor long lobe (8) and the outer conductor short lobe (7) of the outer conductor (6); the outer shell (10) is installed on the outer side of the outer conductor (6); the inner conductor (9) in the protruding section of the insulator (2) is a spiral structure An inner conductor spiral vibrator (3); the outer conductor (6) further includes an upper outer conductor long lobe (12) and an upper outer conductor short lobe (11), the upper ends of the arc-shaped upper outer conductor long lobe (12) and the upper outer conductor short lobe (11) are fixedly connected, the upper outer conductor long lobe (12) and the upper outer conductor short lobe (11) are installed on the upper part of the raised section of the inner conductor (9), and the upper outer conductor long lobe (12) and the upper outer conductor short lobe (11) are installed in an interlaced insertion distribution with the lower outer conductor long lobe (13) and the lower outer conductor short lobe (14) of the outer conductor (6), and the upper outer conductor long lobe (12), the upper outer conductor short lobe (11), the lower outer conductor long lobe (13) and the lower outer conductor short lobe (14) are fixed to the raised section of the insulator (2) by screws.

2. The petal-shaped cavity radiator according to claim 1, characterized in that: The lower end of the insulator (2) is fixedly connected to the radio frequency connector (1); a connecting thread (4) is provided on the outer side of the lower end of the insulator (2); and the lower end of the outer conductor (6) is threadedly connected to the insulator (2); a shell fixing thread (5) is provided on the outer side of the lower end of the outer conductor (6); and the lower end of the shell (10) is threadedly connected to the outer conductor (6).

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