CN111248905B

CN111248905B - Brain electrode

Info

Publication number: CN111248905B
Application number: CN202010055767.XA
Authority: CN
Inventors: 王常勇; 周瑾; 柯昂
Original assignee: Academy of Military Medical Sciences AMMS of PLA
Current assignee: Academy of Military Medical Sciences AMMS of PLA
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2023-02-10
Anticipated expiration: 2040-01-17
Also published as: CN111248905A

Abstract

The invention discloses a brain electrode, comprising: a receiving part, wherein a receiving cavity for receiving the conductive paste is formed in the receiving part; a probe which is extended from a lower end of the housing part and can be extended and contracted; a partition plate disposed in the receiving cavity and dividing the receiving cavity into an upper cavity and a lower cavity; the one-way valve is arranged at the partition plate and is switched to a closed state when the conductive paste of the lower cavity is pressed; a spring disposed in the lower chamber for applying an elastic force to the probe; a balance hole opened at an upper end of the receiving portion; wherein: a flow guide channel is formed in the probe and axially penetrates through the probe.

Description

Brain electrode

Technical Field

The invention relates to a brain electrode.

Background

The brain electrode of the prior art needs to be coated with a conductive paste on the probe to increase the conductivity between the probe and the skin when contacting the skin of the affected human body.

However, when the probe needs to be continuously contacted with the skin, the conductive paste needs to be continuously applied to the probe, and otherwise, the conductive paste on the probe is continuously lost, so that the guidance performance is reduced. However, frequent application of the conductive paste on the probe increases the workload on the one hand and on the other hand causes frequent interruptions in the detection of the brain electrodes on the human body.

Disclosure of Invention

In view of the above technical problems in the prior art, embodiments of the present invention provide a brain electrode.

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:

an brain electrode comprising:

a receiving part, in which a receiving cavity for receiving the conductive paste is formed;

a probe which is extended from a lower end of the housing part and can be extended and contracted;

a partition plate disposed in the receiving cavity and dividing the receiving cavity into an upper cavity and a lower cavity;

the one-way valve is arranged at the partition plate and is switched to a closed state when the conductive paste of the lower cavity is pressed;

a spring disposed in the lower chamber for applying an elastic force to the probe;

a balance hole which is opened at the upper end of the receiving part; wherein:

a flow guide channel is formed in the probe and axially penetrates through the probe.

Preferably, the check valve includes a flap pivoted to one side of the opening of the partition, and a free end of the flap is switched to a closed state by stopping at a bottom of the partition.

Preferably, the upper cavity and the lower cavity are both cylindrical cavities, and the diameter of the upper cavity is larger than that of the lower cavity; the partition plate is positioned at the joint of the upper cavity and the lower cavity.

Preferably, a stopper table for restricting the probe from being separated from a lower end of the receiving portion is formed at an upper end of the probe.

Preferably, the lower end of the probe is provided as a hemispherical surface.

Preferably, the flow guide channel forms a plurality of ports at a lower end of the probe.

Preferably, a stop ring is formed at an upper portion of the lower chamber, and an upper end of the spring is stopped at the stop ring.

Compared with the prior art, the brain electrode disclosed by the invention has the beneficial effects that:

1. the brain electrode provided by the invention can obtain the conductive paste on the surface of the probe by pressing the probe against the skin, thereby avoiding frequently and independently coating the conductive paste on the surface of the probe.

2. Through setting up check valve and balanced hole, make the probe obtain the conductive paste by the water conservancy diversion passageway on the one hand and become possible, on the other hand, after removing the extrusion, the epicoele can also supply conductive paste for the cavity of resorption.

3. The lower end of the probe is set to be a hemispherical surface, and a plurality of ports are formed at the lower end of the probe, so that the resistance of the conductive paste caused by the contact of the probe and the skin is reduced.

The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having alphabetic suffixes or different alphabetic suffixes may represent different instances of similar components. The drawings illustrate various embodiments generally, by way of example and not by way of limitation, and together with the description and claims serve to explain the embodiments of the invention. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Fig. 1 is a schematic structural diagram of a brain electrode according to an embodiment of the present invention.

Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is a view showing a use state of brain electrodes according to an embodiment of the present invention.

Reference numerals:

10-a receiving section; 11-an upper chamber; 111-balance holes; 12-a lower cavity; 20-a probe; 21-a flow guide channel; 211-port; 22-a stop table; 30-a spring; 31-a stop ring; 40-a flap; 41-a separator; 100-skin.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

As shown in fig. 1 to 3, the disclosed embodiment of the present invention discloses an electroencephalograph, which includes: the housing 10, the probe 20, the spacer 41, the check valve, the spring 30, and the balance hole 111.

The receiving portion 10 has two receiving chambers therein, i.e., an upper chamber 11 and a lower chamber 12. The upper chamber 11 and the lower chamber 12 are both cylindrical chambers, and the diameter of the upper chamber 11 is larger than that of the lower chamber 12. The balance hole 111 is opened at an upper end of the receiving portion 10, thereby allowing the external atmosphere to communicate with the upper chamber 11.

A partition plate 41 is formed at the junction of the upper chamber 11 and the lower chamber 12, and the partition plate 41 is formed with an opening in the middle. The one-way valve is a flap 40 pivoted to one side of the opening, and after the flap 40 is pivoted toward the opening, the free end of the flap abuts against the bottom of the partition plate 41, so that the conductive paste in the lower cavity 12 is limited from flowing back into the upper cavity 11.

The probe 20 is capable of telescoping to the lower end of the lower chamber 12, and a stop 22 is formed at the upper end of the probe 20 to limit separation of the probe 20 as a whole from the lower chamber 12.

A stop ring 31 is provided on the inner wall of the upper portion of the lower chamber 12, and a spring 30 is located in the lower chamber 12 between the stop ring 31 and the stop table 22.

The probe 20 is provided with a flow guide channel 21, the flow guide channel 21 axially penetrates through the probe 20, the flow guide channel 21 is provided with a plurality of ports 211 at the lower end of the probe 20, the lower end of the probe 20 is provided with a semicircular surface, and under the action of pressure, the conductive paste in the lower cavity 12 can flow out of the ports 211 of the probe 20 through the flow guide channel 21.

The working principle of the brain electrode is described as follows:

when the electroencephalogram is used, the probe 20 is pressed against the skin 100, and the reaction force of the skin 100 against the probe 20 causes the probe 20 to press the airway paste in the lower cavity 12, so that the conductive paste in the lower cavity 12 generates a certain pressure which forces the flap 40 to close the opening of the partition 41 on the one hand, and the conductive paste to flow out of the port 211 through the flow guide channel 21 on the other hand; when the pressing of the probe 20 against the skin 100 is released, the flap 40 is opened by pivoting under the action of the balance hole 111, the spring 30 rebounds to restore the probe 20, and the air guide paste portion of the upper chamber 11 flows into the lower chamber 12 to replenish the lower chamber 12.

1. The brain electrode provided by the invention can obtain the conductive paste on the surface of the probe 20 by pressing the probe 20 against the skin 100, thereby avoiding frequently and separately coating the conductive paste on the surface of the probe 20.

2. By providing the one-way valve and the balancing hole 111, it is possible to obtain the conductive paste from the probe 20 through the diversion channel 21, and on the other hand, the upper chamber 11 can also replenish the lower chamber 12 with the conductive paste after the squeezing is released.

3. By forming the lower end of the probe 20 as a hemispherical surface and forming a plurality of ports 211 at the lower end of the probe 20, resistance of the conductive paste due to contact of the probe 20 with the skin 100 is reduced.

It should be noted that:

1. when the probe 20 is idle, the balance hole 111 can be blocked by a rotary baffle

2. The lead wire of the probe 20 can pass through the housing cavity and exit from the upper end of the housing 10.

3. The storage part 10 can be easily added with the conductive paste by providing an openable and closable lid at the upper end of the storage part 10.

Moreover, although exemplary embodiments have been described herein, the scope of the present invention includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative, and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be utilized by those of ordinary skill in the art upon reading the foregoing description. In addition, in the above-described embodiments, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a non-claimed disclosed feature is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that the embodiments can be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents of the invention may be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. An electroencephalograph, comprising:

a balance hole which is opened at the upper end of the receiving part; wherein:

2. The brain electrode according to claim 1, wherein the check valve includes a flap pivoted to one side of the opening of the partition, a free end of the flap being switched to a closed state by being stopped at a bottom of the partition.

3. The brain electrode according to claim 1, wherein the upper chamber and the lower chamber are both cylindrical chambers, the upper chamber having a diameter greater than a diameter of the lower chamber; the partition plate is positioned at the joint of the upper cavity and the lower cavity.

4. The brain electrode according to claim 1, wherein a stopper table for restricting the probe from being separated from a lower end of the receiving portion is formed at an upper end of the probe.

5. The brain electrode according to claim 1, wherein the lower end of the probe is provided in a hemispherical shape.

6. The brain electrode according to claim 1, wherein the flow guide channel forms a plurality of ports at a lower end of the probe.

7. The brain electrode according to claim 1, wherein a stop ring is formed at an upper portion of the lower chamber, and an upper end of the spring is stopped at the stop ring.