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Novel electrode array for treating tumors through electric field

An electrode array and electric field treatment technology, applied in the field of medical devices, can solve the problems of partial lift, no head contact, poor wearing comfort, etc., and achieve the effect of increasing capacitance value, flexible bending ability, and increasing treatment experience

Pending Publication Date: 2021-11-02
HEBEI PUNI MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] see figure 1 , the existing electrode arrays for the treatment electric field mostly adopt 9 prior art electrode sheets 100 arranged in a "King" structure. This structure design has the following problems: 1. The electrode veneer is large (about 7700mm 2 , the area occupied by 9 electrodes is 22.5cm 2 ) The area of ​​a single electrode sheet is 2500mm 2 , the electrode distribution is sparse, and the energy density is low (the capacitance range of a single electrode sheet is about 20nF)
2. The size of the electrode sheet is large (diameter 19mm). Because the head is round, it is prone to partial warping during wearing, and cannot be in good contact with the head.
3. The single-piece electrode is large, with a thickness of about 1mm. The patient's long-term wearing comfort is poor, and there are obvious indentations on the scalp

Method used

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  • Novel electrode array for treating tumors through electric field
  • Novel electrode array for treating tumors through electric field
  • Novel electrode array for treating tumors through electric field

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0028] Existing technologies such as figure 1 As shown, its prior art electrode sheet 100 has a diameter of 19 mm and a thickness of 1 mm. Nine prior art electrode sheets 100 are arranged in the word "King" and arranged in the electric field generation area 300 with a width of 90 mm and a height of 110 mm. Calculation formula:

[0029] ;

[0030] where: ε r --Relative permittivity;

[0031] S ——The facing area of ​​the capacitor plate;

[0032] k - electrostatic force constant;

[0033] d - the thickness of the electrode sheet;

[0034] It is not difficult to find out from the calculation formula that the larger the electrode sheet area (S) and the smaller the electrode sheet thickness (d), the larger the capacitance value.

[0035] The energy density mentioned in this application means: the ratio of the total effective area of ​​the electrode sheets in the electric field generating region 300 to the area of ​​the electric field generating region 300 . The larger the ...

Embodiment 1

[0038] Such as figure 2 and image 3 A new type of electrode array for electric field treatment of tumors is shown, which includes: a flexible substrate 1, on which an electric field generating area 300 (90 mm in width and 110 mm in height) is arranged, and in the electric field generating area 300 is set There is a flexible positioning part 2, and 54 positioning holes 8 are arranged in a staggered arrangement on the flexible positioning part 2, and an electrode sheet 200 of ceramic material is arranged in each of the positioning holes 8, and the electrode sheets 200 of 54 sheets are arranged according to The width×height is 6×9 and arranged in a staggered manner; the diameter of each electrode sheet 200 is 10 mm. The 54 electrode sheets 200 are soldered and connected by the flexible circuit board 5 . In this embodiment, the area occupied by 54 electrode sheets 200 is 37.368 cm², the area occupied by 9 sheets of prior art electrode sheets 100 is 22.5 cm², and the energy den...

Embodiment 2

[0047] Such as image 3 As shown, the flexible positioning member 2 in this embodiment is a flexible positioning plate 2-2 made of a whole rectangular foam or silicone material, and the preferred material of the flexible positioning plate 2-2 can be other soft materials, on which There are 54 positioning holes 8 arranged in a staggered manner. The size and shape of the positioning holes 8 match the size and shape of the electrode sheet 200 (the electrode sheet 200 in this embodiment has a diameter of 10 mm and a thickness of 0.3 mm). The design of the flexible positioning plate 2-2 in this embodiment makes the fixing of the electrode sheets 200 more stable and reliable, but the degree of bending closeness between the upper and lower rows and adjacent electrode sheets 200 is reduced, which is suitable for patients with relatively flat bodies. parts.

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Abstract

The invention relates to a novel electrode array for treating tumors by an electric field, which comprises a flexible base body, an electric field generation area is arranged on the flexible base body, a flexible positioning part is arranged in the electric field generation area, a plurality of ceramic electrode plates are arranged on the flexible positioning part in an array manner, and a plurality of electrode plates are connected through a flexible circuit board; a plurality of positioning holes are formed in the flexible positioning part, the electrode plates are arranged in the positioning holes, and the diameter of each electrode plate is 3-15 mm. According to the electrode array device, the energy density can be improved through a plurality of small-size electrode plates arranged in an array in an electric field generation area, compared with the prior art, the electric field intensity at the treatment position of a patient is remarkably improved, the flexibility is good, and the electrode array device can be tightly attached to the skin of different parts of the patient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a novel electrode array for treating tumors with an electric field. Background technique [0002] Glioma is a malignant tumor originating from neuroepithelial tissue, commonly known as "brain cancer". Glioma is the most common primary intracranial tumor. Foreign clinical statistics show that the incidence of primary intracranial tumor is 21 / 100,000, and glioma accounts for about 60%. Domestic literature reports that gliomas account for 35.26% to 60.96% of intracranial tumors. At present, the most commonly used treatment method is surgery plus radiotherapy and chemotherapy. Due to the invasive growth of brain glioma, it is often difficult to completely remove it by surgery. And because it is a radioresistant tumor and is resistant to most chemotherapeutic drugs, the overall curative effect is not good, especially high-grade glioma, which has highly gradual growth charact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/04
CPCA61N1/0476A61N1/0492
Inventor 张建义刘胜军段红杰
Owner HEBEI PUNI MEDICAL TECH CO LTD
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