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Flexible Laplacian electrode for detecting physiological electric signal

A technology of electrical signals and electrodes, applied in the field of medical devices, to achieve the effects of accurate collection, optimized fit, and not easy to fall off

Inactive Publication Date: 2018-06-29
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The data collected by traditional electrodes cannot fully reflect the corresponding spatial distribution of bioelectricity

Method used

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  • Flexible Laplacian electrode for detecting physiological electric signal
  • Flexible Laplacian electrode for detecting physiological electric signal
  • Flexible Laplacian electrode for detecting physiological electric signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] image 3 For the implementation of Ag / AgCl bump structure, such as figure 1 with image 3 . The electrode material is Ag / AgCl, composed of three concentric circles, the central solid circle (2) has a radius of 3.2mm, the inner diameter of the first ring (3) is 5mm, the outer diameter is 6mm, and the inner diameter of the second ring (4) The thickness is 10mm, the outer diameter is 10.5mm, and the thickness is 1mm. To ensure the insulation between the rings and the conductivity of the electrodes, the Laplacian electrode structure has a certain thickness. The thickness of the flexible substrate (1) is 0.5mm. The thickness of Ag / AgCl The thickness of the Laplacian electrode structure is 1.5mm, and the conductive paste is attached to the surface of the Ag / AgCl electrode ring.

[0023] The flexible substrate (1) can be square or round, made of polyimide material, has the advantage of being soft and bendable, and fits more closely to the skin, reducing skin impedance. The size ...

Embodiment 2

[0026] Such as figure 2 As shown, the Laplacian electrode structure is recessed downward. The center of the recess is a central solid circle (2) with a radius of 3.2mm, and the first ring (3) with an inner radius of 5mm and an outer radius of 6mm, respectively, outwards in turn, the inner radius The second ring (4) with 10mm and outer radius of 10.5mm is selected as Ag / AgCl with a thickness of 0.5mm; the thickness of the flexible substrate (1) is 2mm.

[0027] The connecting wire (5) of the electrode is made of Ag / AgCl, drawn from the back of the flexible substrate, and has a length of 20 mm, and is connected to a physiological collection instrument.

Embodiment 3

[0029] Such as Figure 4 As shown, the flexible Laplacian electrode is used in the instrument for collecting uterine myoelectric signal, it is recommended to use Figure 4 The electrode is placed in the same way. The position of the electrode is determined according to the approximate mapping position of the uterus on the body surface. Electrodes 1, 2, 3, and 4 are placed symmetrically on the fundus of the uterus; electrodes 5 and 6 are placed symmetrically at the center of the uterus; electrodes 7, 8 are placed symmetrically on the cervix.

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Abstract

The invention provides a flexible Laplacian electrode for detecting a physiological electric signal, and belongs to the technical field of medical apparatuses. A flexible circuit is designed, a Laplacian electrode structure is embedded to a flexible substrate, and the Laplacian electrode is mainly composed of the flexible substrate, the Laplacian electrode structure and a connecting line. The physiological signal acquisition electrode can be randomly folded and bent, is of the Laplacian structure, is flexibly attached to the skin without gaps and does not easily fall.

Description

Technical field [0001] The invention belongs to the technical field of medical devices, and relates to a Laplacian electrode for collecting physiological signals. Background technique [0002] The data collected by traditional electrodes cannot fully reflect the corresponding spatial distribution of bioelectricity. Therefore, in recent years, the research on the spatial distribution of bioelectricity has gradually become a new hot spot, and the appearance of the Body surface Laplacian map (BSLM) has set off a new climax in this hot spot. Body surface potential Laplacian map (Body surface Laplacian map, BSLM) technology is developed on the basis of the original body surface potential mapping (BSPM) technology. The concept of surface Laplacian was first proposed by Hjorth. Laplacian potential can be regarded as the differential of the normal component of the body surface equivalent charge density or the body surface current density. From the analytical formula, it is the second-or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/04A61B5/0408A61B5/0492A61B5/296
CPCA61B2562/0209A61B5/24A61B5/25A61B5/296
Inventor 郝冬梅安阳高沛杨琳张松杨益民李旭雯
Owner BEIJING UNIV OF TECH
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