Active dot matrix flexible electrode paste device

A flexible electrode and dot-matrix technology, applied in medical science, diagnosis, diagnostic recording/measurement, etc., can solve the problem that the collected signal is susceptible to interference

Active Publication Date: 2020-11-24
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patent US8818482 discloses "electrode patch monitor device" and introduces a flexible electrode using a screen printing process. However, the electrode still uses a passive design and is susceptible to interference when collecting signals. The electrode is aimed at certain specific muscles. The group detection effect is better, but it still has some limitations

Method used

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  • Active dot matrix flexible electrode paste device
  • Active dot matrix flexible electrode paste device
  • Active dot matrix flexible electrode paste device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In this example, see Figure 1~6 , an active dot-matrix flexible electrode sticking device, consisting of a flexible dry electrode module I, a signal acquisition circuit system II and ancillary components III, specifically:

[0048]Flexible dry electrode module I is sheet-shaped, using an insulating flexible circuit board base 1 as a carrier substrate, on the front of the flexible circuit board base 1, a series of disc electrodes are installed according to the set electrode arrangement, and the disc electrodes It can directly contact with the surface of human skin to collect human body electromyographic signals. Each disc electrode is arranged in a dot matrix electrode arrangement, and two disc electrodes are combined to form a multi-dimensional differential method to form a multi-channel disc electrode array 2. Make every two disk electrodes form an independent channel for collecting electromyographic signals, and a series of electronic components 17 are also arranged ...

Embodiment 2

[0061] This embodiment is basically the same as Embodiment 1, especially in that:

[0062] In this example, see Figure 7 , is a schematic diagram of a dot-matrix electrode arrangement of the multi-channel disk electrode array 2 in this embodiment. In an arrangement, multi-dimensional difference can be realized through hardware, and the MUAP in the required direction can be selected through software calculation. A variety of different dot matrix arrangements are used to make a difference between the disk electrodes, which is beneficial to extract the EMG signals of complex muscle groups within a certain muscle area and improve the spatial filtering effect of the signals. Figure 7 It shows another type of radial arrangement in this embodiment. Each disk electrode is directly connected to the voltage follower circuit 4 for impedance matching, and then there is a difference between the disk electrodes. The disk electrodes 2-2-1 and 2-2-7 form channel 1, 2-2-2 and 2-2-7 form ch...

Embodiment 3

[0065] This embodiment is basically the same as the previous embodiment, and the special features are:

[0066] In this example, see Figure 8 , is a schematic diagram of a dot-matrix electrode arrangement of the multi-channel disk electrode array 2 in this embodiment. In an arrangement, multi-dimensional difference can be realized through hardware, and the MUAP in the required direction can be selected through software calculation. A variety of different dot matrix arrangements are used to make a difference between the disk electrodes, which is beneficial to extract the EMG signals of complex muscle groups within a certain muscle area and improve the spatial filtering effect of the signals. Figure 8 It shows another type of radial arrangement in this embodiment. Each disk electrode is directly connected to the voltage follower circuit 4 for impedance matching, and then there is a difference between the disk electrodes. The disk electrodes 2-3-1 and 2-3-9 form channel 1, 2-...

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Abstract

The invention discloses an active lattice type flexible electrode sticking device, which is applied in the technical field of collecting electrophysiological signals of human body surface in the medical and health field. The device of the invention integrates a flexible dry electrode module, a signal acquisition circuit system and ancillary components into a sticky patch. The flexible dry electrode module is in direct contact with the human body surface to collect human body electromyography signals, and realizes impedance matching through voltage follower circuits. The signal acquisition circuit system performs amplification, filtering and A / D conversion processing on the impedance matched electromyography signals, and finally passes wireless communication The module transmits the myoelectric signal to the client. The device of the present invention has the characteristics of easy wearing and softness, is suitable for long-term use 24 hours a day, and meets the needs of human-computer interaction such as rehabilitation and disease. The present invention adopts a dot-matrix electrode arrangement to collect electrophysiological signals of irregular muscle fibers or smaller muscle groups, and can realize multi-dimensional difference calculation to improve spatial filtering effect.

Description

technical field [0001] The invention relates to an electrophysiological signal acquisition device, in particular to a myoelectric signal acquisition device, which is applied to the technical field of medical and health detection instruments. Background technique [0002] EMG signals are widely used in patient monitoring and health checks in hospitals and homes. EMG signals are usually collected using wet electrodes, but such electrodes are not suitable for human-computer interaction needs in long-term rehabilitation, diagnosis and treatment, etc. 24 hours a day. The contact between the dry electrode and the human skin will generate a DC polarization voltage of up to several hundred millivolts. If the DC bias cannot be eliminated, the op amp will be overloaded and the signal cannot be effectively amplified. Therefore, the active design of the electrode is adopted, that is, the signal enters Preprocessing the signal directly before the amplifier can effectively improve the acq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0492A61B5/0488A61B5/296
CPCA61B2562/046A61B2562/043A61B5/30A61B5/296A61B5/389
Inventor 赵翠莲费森杰柳叶潇
Owner SHANGHAI UNIV
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