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A physiological electrical signal collection device

A collection device and technology of electrical signals, applied in medical science, diagnosis, diagnostic recording/measurement, etc., can solve the problems of loss of accuracy and reliability of signals, large environmental noise of connecting wires, large contact impedance, etc., to reduce environmental pollution Noise interference to signal, simple structure, easy to carry effect

Inactive Publication Date: 2007-05-16
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The interference factors of the physiological electrical signal during the collection process are mainly caused by the contact resistance of the skin and the coupling of the weak physiological electrical signal to the environmental radiation on the transmission line. Due to the large and unstable contact impedance of the skin of the animal or the human body, a long connection The wire will introduce a lot of environmental noise, so the animal or human impedance and environmental noise will interfere with the signal in the post-processing, making the collected signal lose accuracy and reliability

Method used

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  • A physiological electrical signal collection device
  • A physiological electrical signal collection device
  • A physiological electrical signal collection device

Examples

Experimental program
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Effect test

Embodiment 1

[0019] As shown in Fig. 1 and Fig. 2, the present embodiment is a flat active electrode 10, which includes an electrode cap 11 and a cover plate 12 made of insulating materials such as plastic, and a through hole 13 is arranged on the cover plate 12, An electrode 14 made of a metal material is arranged in the through hole 13 of the cover plate 2, one side of the electrode 14 is fixed on the electrode cap 11, and the other side of the electrode 14 is provided with a conventionally used double-sided adhesive layer (in the figure not shown), the self-adhesive layer is provided with a small hole connected to the electrode 14, and the surface of the self-adhesive layer is provided with a paper protective film. The adhesive layer is pasted on the signal collection part of the animal or human body. An active circuit board 15 is arranged between one side of the through hole 13 on the cover plate 12 and the electrode cap 11 . The active circuit board 15 of the prior art is placed in t...

Embodiment 2

[0021] As shown in Fig. 3 and Fig. 4, the present embodiment is a special active electrode 20 for EEG. Its structure is similar to that of Embodiment 1, including an electrode cap 21, and a wire output terminal 22 is arranged on one side of the electrode cap 21. The bottom of the cap 21 has a ring sleeve 23, and a T-shaped columnar electrode 24 passes through the bottom of the ring sleeve 23 and is fixed in the electrode cap 21. The active circuit board 25 is arranged on the top of the electrode 24, and the active circuit board 25 is electrically connected to the electrode 24 and the wire output end 22 respectively. The cover plate 26 is arranged on the top of the active circuit board 25 and fixed on the electrode cap 21 . When the active electrode 20 of this embodiment is in use, first insert the ring sleeve 23 at the bottom of the electrode cap 21 on the fixing seat for the patient to perform an EEG, and attach the electrode 24 protruding from the bottom of the ring sleeve 2...

Embodiment 3

[0023] As shown in Fig. 5, Fig. 6, Fig. 7, present embodiment is a kind of button type active electrode 30, and it comprises an electrode cap 31, and a wire output terminal 32 is arranged on the electrode cap 31, is provided with in the electrode cap 31 The source circuit board 33, the active circuit board 33 is electrically connected to the wire output terminal 32, and a cover plate 34 is buckled on the top of the active circuit board 33. The center of the cover plate 34 has a concave hole 35, and the concave hole 35 can also be a recess. The bottom of the recess is electrically connected to the active circuit board 15 . A columnar electrode 36 has a convex ball 37 at its bottom. The convex ball 37 can be snapped into the concave hole 35 and electrically connected to the active circuit board 33. The top of the electrode 36 is a disc-shaped 38, which lies in a single-sided foam. In the through hole 40 set in the center of the dry glue layer 39 . The electrodes 36 of the prese...

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Abstract

The invention relates to a physiological signal collector, which is characterized in that: it comprises an electrode cap, a wire output connected to one side of electrode cap, an active circuit board connected to the wire output and inside the electrode cap, an electrode connected to the active circuit board and at least one end inside the electrode cap, a cover plate connected to the open end of electrode cap. The collected physiological signal is processed by forward circuit to be transmitted by wire; therefore, its signal amplitude is higher than condition interference, to reduce the skin resistance interference on the signal, while the obtained data is more accurate.

Description

technical field [0001] The invention relates to a physiological electric signal acquisition device, in particular to a physiological electric signal acquisition device used in detection, medical monitoring and diagnosis and treatment equipment. Background technique [0002] The acquisition of physiological electrical signals is usually used in animal and human experiments in medicine, psychology and other disciplines. Physiological electrical signals can reflect various physiological and neural activities of animals and human bodies, so the collection of physiological electrical signals is a necessary part of the above-mentioned device. [0003] In traditional physiological electrical signal acquisition systems, passive electrodes are often connected to animals or human bodies, and the physiological electrical signals are transmitted to the preamplifier stage through wires to adjust and amplify the signal, and then enter the subsequent stage for further processing. The inte...

Claims

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Application Information

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IPC IPC(8): A61B5/04
Inventor 柴玉峰张珏方竞
Owner PEKING UNIV
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