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One-way shape memory plane spiral microwave antenna for thermotherapy

A technology of microwave hyperthermia and planar spiral, which is applied in microwave heating, antennas, heating appliances for therapeutic treatment, etc., can solve the problems of tumor cell metastasis, difficulty in adjusting the shape of the heating area, and limited heating range

Inactive Publication Date: 2005-04-06
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These antennas are all columnar structures, and the radiation energy is distributed axially symmetrically around the radiation gap on the column. The heating range is limited, and the shape of the heating area is difficult to adjust. In addition, the radiation center of the antenna must be located in the center of the lesion, and the antenna often needs to be inserted into the lesion tissue during treatment. , increase the treatment trauma, and may also cause the metastasis of tumor cells to tumor tissue

Method used

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  • One-way shape memory plane spiral microwave antenna for thermotherapy
  • One-way shape memory plane spiral microwave antenna for thermotherapy
  • One-way shape memory plane spiral microwave antenna for thermotherapy

Examples

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example 1

[0020] Example 1: One-way shape memory planar helical microwave hyperthermia antenna for gastric cancer hyperthermia

[0021] The planar helix antenna (8) and the conductive grounding grid (5) of the one-way shape-memory planar helix microwave hyperthermia antenna are processed with nickel-titanium memory alloy wires with a titanium content of 49% and a nickel content of 51%. The diameter of the shape memory alloy material selected for the planar helical antenna (8) is 0.8 mm, the number of helical turns is 8 turns, the direction of rotation is clockwise, and the pitch of the rotation is 0.5 cm; the diameter of the conductive grounding grid (5) is selected from the shape memory alloy material The diameter of the mesh is 0.1mm, the diameter of the mesh is 5mm, the diameter of the conductive grounding mesh is 10cm, the diameter of the central hole is 5mm, and the length of the cylindrical mesh extending from the hole is 8mm. The inner diameter of the interventional catheter is 6...

example 2

[0024] Example 2: One-way shape memory planar helical microwave hyperthermia antenna for uterine cancer hyperthermia

[0025]The planar helix antenna (8) and the conductive grounding grid (5) of the one-way shape memory planar helix microwave hyperthermia antenna are processed by nickel-titanium memory alloy wires with 50% titanium content and 50% nickel content. The number of helical rotation turns selected by the planar helical antenna (8) is 5, the diameter of the helical shape memory alloy material is 0.5 mm, the direction of rotation is clockwise, and the pitch of the rotation is 0.8 cm; the conductive grounding grid (5) is selected from the shape memory alloy material The diameter is 0.5mm, the diameter of the mesh is 5mm, the diameter of the conductive grounding mesh is 7cm, the diameter of the central hole is 4mm, and the length of the cylindrical mesh extending from the hole is 5mm. The inner diameter of the interventional catheter is 5 mm. The bottom surface of the ...

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Abstract

The invention relates to a medical antenna of heat flowmeter, especially a single pass shape memorizing spiral microwave antenna including connecting tube and homoaxial input wire. Its characteristics are that the homoaxial input wire, spiral antenna, conductor earth mat and introducing head are all jacketed in the connecting tube and can e moved back and forth; the inner conductor is welded with spiral antenna and there is a bush on the linking point; the conductor earth mat is jointed to the outer conductor by metal ring; the homoaxial input wire, spiral antenna and conductor earth mat are all in the connecting tubewhen they enters the medical position of body, and the spiral antenna, and conductor earth mat extend out from the connecting tube under the boy temperature and become the designed shape. The invention has no need for hurt cell of focus, the shape of medical range and area can be adjusted through changing parameter of antenna, and no limitation of the bodystructure because of using memory alloy material.

Description

technical field [0001] The invention belongs to the technical field of coaxial cable microwave antennas, and relates to a medical thermotherapy antenna, in particular to a one-way shape-memory planar helical microwave antenna. Background technique: [0002] Microwave hyperthermia technology has been applied in the clinical treatment of many diseases, such as hyperthermia for tumors, thermocoagulation for hemostasis and coagulation of abnormal hyperplastic tissues. Microwave hyperthermia is often divided into external hyperthermia and internal intervention or insertion hyperthermia. External hyperthermia refers to hyperthermia where the microwave radiation antenna is located outside the body. It is mainly used to treat diseased tissues located on the surface and superficial layers of the body. The shape and size of the antenna are not limited by the structure of the human body. Open waveguide, microstrip antenna, Antennas of various structures such as dipole and helical ante...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F7/00A61F7/12H01Q13/08H05B6/72
Inventor 席晓莉柯熙政王丽黎
Owner XIAN UNIV OF TECH