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One-way shape memory plane spiral microwave antenna for thermotherapy

A technology of microwave hyperthermia and plane spiral, which is applied to microwave heating, antennas, heating appliances for treatment and other directions, and can solve the problems of difficulty in adjusting the shape of the heating area, increased treatment wounds, and limited heating range.

Inactive Publication Date: 2006-11-22
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

[0018] Example 1: One-way shape memory planar helical microwave hyperthermia antenna for gastric cancer hyperthermia

[0019] 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 a titanium content of 49% and a nickel content of 51%. The diameter of the shape memory alloy material selected by 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 selected from the shape memory alloy material is 0.1 mm, The diameter of the mesh is 5mm, the diameter of the conductive grounding mesh surface 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 6mm. The diameter of the botto...

example 2

[0022] Example 2: One-way shape memory planar helical microwave hyperthermia antenna for uterine cancer hyperthermia

[0023] 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 turns used in the planar helical antenna 8 is 5, the diameter of the helical shape memory alloy material is 0.5mm, the direction of rotation is clockwise, and the pitch is 0.8cm; the diameter of the conductive grounding grid 5 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 conical inlet head has a diameter of 7mm and a height of 5mm. The coaxial input l...

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Abstract

The invention relates to a medical thermotherapy antenna, in particular to a one-way shape-memory planar helical microwave antenna, which has an intervention catheter and a coaxial input line; It is set in the interventional catheter and can move back and forth in it; the inner conductor is welded to the planar helical antenna, and a sleeve is set at the connection; the conductive grounding grid is clamped on the outer conductor with a metal ring; the coaxial input line, the planar helical antenna and the When the conductor grounding grid enters the body, it is set in the interventional catheter. After entering the treatment position inside the body, the planar helical antenna and the conductor grounding grid protrude out of the interventional catheter at the internal temperature of the human body and expand and deform into the designed shape. The advantage of the design of the present invention is that it does not need to stab the focus tissue; the treatment range and the shape of the treatment area can be adjusted by adjusting the parameters of the antenna; the use of memory alloy materials is no longer limited by the body structure.

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