Method for performing a physiological analysis with increased reliability

An analysis method and electrophysiological technology, applied in medical science, diagnostic signal processing, sensors, etc., can solve problems such as measurement deviations

Inactive Publication Date: 2014-11-26
IMPETO MEDICAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] It should be understood that the oxidation reaction of the positive electrode is associated with the gradual development of overvoltages that bias the measurements

Method used

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  • Method for performing a physiological analysis with increased reliability
  • Method for performing a physiological analysis with increased reliability
  • Method for performing a physiological analysis with increased reliability

Examples

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Embodiment Construction

[0050] Modeling of skin's electrochemical behavior at low voltage

[0051] An improved model of the electrochemical behavior of the skin subjected to electrical potential was devised. Reference attached figure 2 The main elements of skin considered in this model are described.

[0052] Using low voltages in the method according to the invention, ie below 10 V, the outermost layer of the skin P, the stratum corneum SC, is electrically insulating. This layer, contained in the epithelial layer EP, is composed of adipose matrix and keratinocytes, ie dead cells. as attached figure 2 As shown, it is crossed by hair follicle HF and sweat follicle SGF. Then only the sweat gland SGF is conductive.

[0053] As a reminder, both types of sweat glands are involved in electrochemical measurements. The apocrine glands AG are located, for example, in the armpits, pubic region or in the hairy region of the chest and have secretory channels leading to the hair follicles. These glands a...

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Abstract

A method for performing an electrophysiological analysis implemented in a system includes: a series of electrodes to be placed on different regions of the human body; a DC voltage source controlled so as to produce DC voltage pulses; a switching circuit for selectively connecting the active electrodes to the voltage source, the active electrodes forming an anode and a cathode, and for connecting at least one other high-impedance passive electrode used to measure the potential reached by the body; and a measuring circuit for reading data representative of the current in the active electrodes, and data representative of the potentials generated on at least certain high-impedance electrodes in response to the application of the pulses, the data allowing a value to be determined for the electrochemical conductance of the skin. The method also regenerates a high-impedance electrode connected to the voltage source as a cathode.

Description

technical field [0001] The present invention relates generally to the field of electrophysiology, and more particularly to the field of electrophysiological analysis of the human body, for example for the purpose of determining pathology. [0002] The invention can be particularly applied to assessing the perspiration function of the human body. Background technique [0003] Patent application FR2912893 has proposed an electrophysiological analysis system comprising a series of electrodes for placement in different regions of the patient's body, a DC voltage source for generating adjustable DC voltage square wave pulses, and arranged for A pair of so-called active electrodes, which are formed with positive and negative poles, are selectively connected to a voltage source and to a switching circuit for connecting at least one other high-impedance electrode. [0004] A voltage applied to the electrodes by a voltage source can generate electrophysiological currents in the oute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/053
CPCA61B5/4266A61B5/72A61B5/6825A61B5/0531A61B5/6814A61B5/6829
Inventor 菲力浦·布伦斯维克
Owner IMPETO MEDICAL
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