CN211609780U - Supporting injection device for electroencephalograph - Google Patents
Supporting injection device for electroencephalograph Download PDFInfo
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- CN211609780U CN211609780U CN202020035233.6U CN202020035233U CN211609780U CN 211609780 U CN211609780 U CN 211609780U CN 202020035233 U CN202020035233 U CN 202020035233U CN 211609780 U CN211609780 U CN 211609780U
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- injection
- conductive paste
- supporting
- electroencephalograph
- rubber
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- 238000002347 injection Methods 0.000 title claims abstract description 63
- 239000007924 injection Substances 0.000 title claims abstract description 63
- 239000002184 metal Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 210000004761 scalp Anatomy 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 210000003128 head Anatomy 0.000 description 9
- 210000004556 brain Anatomy 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000002269 spontaneous effect Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 210000004958 brain cell Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001020 rhythmical effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model provides a supporting injection device for an electroencephalograph, which comprises a rubber sheet (1), a supporting strip (2) and a conductive paste injection tube (3); the rubber sheet (1) is integrally formed and comprises a rectangular plate (11), a trapezoidal plate (12) and a small rubber boss (13); the conductive paste injection tube (3) consists of an injection sac (31) and a catheter (32). The device can effectively pull open and fix the hair of a tested person in an electroencephalogram experiment, so that the scalp is exposed, the conductive paste is prevented from being interfered by the hair in the injection process, and the conditions that the hair is reset in a short time and the test result is influenced are avoided; meanwhile, the device can accurately inject the conductive paste between the electrode (41) and the tested scalp, thereby not only ensuring the injection accuracy, but also reducing the use of the conductive paste, avoiding the excessive influence of the conductive paste on the test result of adjacent hole sites and having strong practicability.
Description
Technical Field
The utility model relates to an electroencephalogram experimental instrument equipment, concretely relates to a support injection apparatus for electroencephalograph.
Background
The electroencephalogram is a graph obtained by recording spontaneous bioelectric potentials of the brain from the scalp by amplifying the bioelectric potentials using a precision electronic instrument, and is the spontaneous and rhythmic electrical activities of brain cell groups recorded by electrodes; the electroencephalograph mainly comprises an amplifier, a recorder and a display, and also comprises consumables such as electrodes or electrode caps, conductive paste, cleaning agents and the like.
The electrical potential related to brain electrical Events (ERP) refers to the change of electrical potential caused by applying a specific stimulus to a certain part of the sensory system or brain and in the brain area when the stimulus is given or removed. The ERP waveform is a very weak physiological electrical signal, which is only a few microvolts to a dozen microvolts and is generally hidden under a spontaneous electroencephalogram. Currently, in psychology, when measuring the electric potential related to the event to be tested, an electroencephalograph (i.e. a headgear) is used to fix a lead wire on the head of a patient, and then a conductive paste is injected into the hole of the headgear, so that the electrode in the hole of the headgear is in contact with the scalp of the patient, and the ERP waveform is obtained through electroencephalogram and synchronization of various stimulation signals and final analysis and processing.
In the prior art, in order to accurately record ERP and remove (or reduce) the insulation of hair, a cotton swab is usually dipped in alcohol in advance and inserted into a head sleeve hole, so that hair is pulled open and scalp leaks, conductivity is increased (the alcohol is a highly conductive substance), and then a syringe is used for injecting conductive paste. This method has the following drawbacks: one, because hair is loose, even if the cotton swab pulls the hair open, the hair can be reset quickly, so that the hair can obstruct the scalp and the electrodes, and the impedance is improved (because ERP signals are very weak, the impedance is increased, and the ERP waveform cannot be detected with high quality); secondly, the electrode is arranged at the side part of the position of the head cover hole, and under the condition that hair is shielded, the injector cannot accurately inject the conductive paste under the electrode, so that the full contact between the electrode and the scalp cannot be ensured, and therefore, only a large amount of conductive paste (with higher price) can be injected, and the resource waste is caused; thirdly, due to the dense holes of the headgear, the injection of a large amount of conductive paste easily causes the contact of the conductive paste between adjacent electrodes (the conductive paste is semifluid), which results in the incapability of distinguishing the source of the electrical signal, thereby affecting the accuracy of detection.
SUMMERY OF THE UTILITY MODEL
To the problem that above prior art exists, the utility model aims to provide a support injection device for electroencephalograph, the device can be dialled the hair open, fixed, exposes the scalp, and simultaneously accurate injects the conductive paste between electrode and the scalp, reduces the waste of conductive paste, increases the accuracy that the EEG signal detected.
The purpose of the utility model is realized through the following technical scheme:
a supporting injection device for an electroencephalograph, characterized by: comprises a rubber thin plate, a supporting strip and a conductive paste injection tube; the rubber sheet is integrally formed, the upper part of the rubber sheet is a rectangular plate, the lower part of the rubber sheet is a trapezoidal plate, the lower part of the trapezoidal plate is a small rubber boss, and the central lines of the rectangular plate, the trapezoidal plate and the small rubber boss are on the same straight line; the two support bars are respectively fixed on two sides of the rectangular plate, and the central lines of the two support bars are on the same straight line and are vertical to the central line of the rectangular plate; the conductive paste injection tube comprises injection bag and pipe, the injection bag is the ellipsoid type, its fixed mounting be in little boss upper portion of rubber, its keep away from the major axis one end of rubber sheet metal with pipe connection, the pipe stretches into in the injection bag, pipe axis perpendicular to the central line of support bar.
Furthermore, the small rubber lug boss is connected with the trapezoidal plate in a smooth arc mode.
Furthermore, the supporting strips are rectangular wood strips.
Furthermore, in order to ensure that the scalp is exposed for a long time, the pulled hair is fixed on two sides of the position of the head cover hole for a long time, and the hair is completely pulled; the support bar comprises straightway and wave section, the straightway with the rubber sheet metal links to each other just the wave section is kept away from the circular arc of straightway one end tip is protruding to the inboard.
Further, the catheter is a circular tube.
Further, in order to conveniently fill the conductive paste in the injection bag, the injection bag is provided with an injection port, and a closed piston is arranged at the injection port; the conductive paste can be filled into the injection capsule by using a syringe after the sealing piston is pulled out.
The utility model discloses has following technological effect:
(1) through the resilience with support bar downwarping and rubber sheet, the hair of being tried the head is dialled out and is fixed in headgear hole site both sides to rubber sheet both sides, and the dead time is long, effectively avoids the condition that the hair appears resetting in the short time, avoids the hair to shelter from scalp and electrode, increase impedance.
(2) Through the arrangement of the conductive paste injection tube, the conductive paste is ensured to be accurately injected between the scalp and the electrode, the use of the conductive paste is effectively reduced, and the waste of the conductive paste is avoided; meanwhile, the electrodes can be fully contacted with the scalp by injecting a small amount of conductive paste, so that the series connection condition between adjacent electrodes is avoided, and the accuracy of a test result is ensured.
(3) Through the three-point location of support bar and conductive paste injection tube and the setting of support bar wave section, ensure to fix the stability of the injection device in the headgear hole site, further ensure that the condition that resets, shelter from the scalp can not appear in the hair short time, ensure that a small amount of conductive paste just can realize the abundant contact of scalp and electrode, ensure that the test procedure is more high-efficient, accurate, have more economical and practical.
Drawings
Fig. 1 is a schematic structural view of the injection device of the present invention.
Fig. 2 is an enlarged view of a portion of fig. 1.
Figure 3 is a top view of the present invention supporting an injection device.
Fig. 4 is a schematic structural view of the support bar for supporting the injection device according to the present invention.
Fig. 5 is a schematic view of the injection device of the present invention mounted on the position of the head cover hole.
Fig. 6 is a sectional view taken along line B-B of fig. 5.
Fig. 7 is a schematic view of an electroencephalograph electrode cap.
Wherein, 1, a rubber sheet; 11. a rectangular plate; 12. a trapezoidal plate; 13. a small rubber boss; 2. a supporting strip; 21. a wave segment; 22. a straight line segment; 3. a conductive paste injection tube; 31. an injection balloon; 311. an injection port; 312. a closed piston; 32. a conduit; 4. a headgear hole location; 41. an electrode; 42. fixing an insulating colloid; 5. and an electrode cap.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 6, a supporting injection device for an electroencephalograph, characterized in that: comprises a rubber thin plate 1, a supporting strip 2 and a conductive paste injection tube 3; the rubber sheet 1 is an integrated piece, as shown in fig. 3, the upper portion of the rubber sheet is a rectangular plate 11, the lower portion of the rubber sheet is a trapezoidal plate 12, the lower portion of the trapezoidal plate 12 is a small rubber boss 13, the small rubber boss 13 is connected with the trapezoidal plate 12 through a smooth circular arc, and the central lines of the rectangular plate 11, the trapezoidal plate 12 and the small rubber boss 13 are on the same straight line. The support bars 2 are two rectangular wood bars which are respectively fixed on two sides of the rectangular plate 11, and the central lines of the two support bars 2 are on the same straight line and are vertical to the central line of the rectangular plate 11; conductive paste injection tube 3 comprises injection bag 31 and pipe 32, injection bag 31 is the ellipsoid type, its fixed mounting in little boss 13 upper portion of rubber, its keep away from the major axis one end of rubber sheet 1 with pipe 32 is connected, pipe 32 stretches into in the injection bag 31, pipe 32 axis perpendicular to the central line of support bar 2.
In order to ensure long time for exposing the scalp, long time for fixing the pulled hair on two sides of the position of the head cover hole and ensure complete pulling of the hair; the supporting strip 2 consists of a straight line section 22 and a wavy section 21, the wavy section 21 is smoothly connected with the straight line section 22, the straight line section 22 is connected with the rubber sheet 1, and an arc at the end part of one end, far away from the straight line section 22, of the wavy section 21 protrudes inwards; the arcs of the wavy section 21 are 1/6 arcs and the diameter of the wavy section is 1/8-1/7 of the length of the straight section 22.
In order to facilitate filling the conductive paste in the injection bag, as shown in fig. 2, the injection bag 31 is provided with an injection port 311, and a closed piston 312 is arranged at the injection port 311; the conductive paste can be filled into the injection capsule 31 by a syringe by pulling out the closing piston 312.
As shown in fig. 5 and 6, a supporting injection device for an electroencephalograph specifically operates as follows: the two supporting bars 2 are pressed downwards, and because the rubber thin plate 1 has high elasticity, the two sides of the rubber thin plate 1 are downward along with the supporting bars 2, and the main body structure of the rubber thin plate 1 forms a compressed bow shape; at the moment, the elbow 21 of the support bar 2 is placed in the head cover hole position 4, and the support bar 2 is driven to pull the hair of the tested person to the two sides of the head cover hole position 4 and fix the hair to the two sides due to the resilience of the rubber, so that the scalp is exposed; at this time, the conductive paste injection tube 3 is pressed downward (or the conductive paste injection tube 3 is compressed at the same time when the support bar is compressed), one end port of the catheter 32 far from the injection sac 31 is pressed under the fixing insulating colloid 42, as shown in fig. 6, and then the injection sac 31 is pressed, so that the conductive paste in the injection sac 31 flows onto the exposed scalp along the catheter 32, and the scalp is ensured to be sufficiently contacted with the electrodes 41. The device not only ensures the accuracy of the test result, but also reduces the waste of the conductive paste; meanwhile, the three-point positioning of the device ensures that the pulled hair cannot be reset rapidly, and ensures the stability of the test and the high efficiency of the test process.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A supporting injection device for an electroencephalograph, characterized by: comprises a rubber thin plate (1), a supporting strip (2) and a conductive paste injection tube (3); the rubber sheet (1) is integrally formed, the upper part of the rubber sheet is a rectangular plate (11), the lower part of the rubber sheet is a trapezoidal plate (12), the lower part of the trapezoidal plate (12) is a small rubber boss (13), and the central lines of the rectangular plate (11), the trapezoidal plate (12) and the small rubber boss (13) are on the same straight line; the two support bars (2) are respectively fixed on two sides of the rectangular plate (11), and the central lines of the two support bars (2) are on the same straight line and are vertical to the central line of the rectangular plate (11); conductive paste injection tube (3) comprise injection bag (31) and pipe (32), injection bag (31) are the ellipsoid type, its fixed mounting in little boss of rubber (13) upper portion, its keep away from the major axis one end of rubber sheet metal (1) with pipe (32) are connected, pipe (32) stretch into in injection bag (31), pipe (32) axis perpendicular to the central line of support bar (2).
2. A supporting injection device for an electroencephalograph, as claimed in claim 1, wherein: the small rubber lug boss (13) is connected with the trapezoidal plate (12) in a smooth arc mode.
3. A supporting injection device for an electroencephalograph, as claimed in claim 2, wherein: the supporting strips (2) are rectangular wood strips.
4. A supporting injection device for an electroencephalograph, according to claim 3, characterized in that: support bar (2) comprise straightway (22) and wave section (21), straightway (22) with rubber sheet (1) link to each other just wave section (21) are kept away from the circular arc of straightway (22) one end tip is protruding to the inboard.
5. A supporting injection device for an electroencephalograph, according to claim 4, wherein: the conduit (32) is a circular tube.
6. A supporting injection device for an electroencephalograph, according to claim 5, wherein: the injection bag (31) is provided with an injection port (311), and a closed piston (312) is arranged at the injection port (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020035233.6U CN211609780U (en) | 2020-01-08 | 2020-01-08 | Supporting injection device for electroencephalograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020035233.6U CN211609780U (en) | 2020-01-08 | 2020-01-08 | Supporting injection device for electroencephalograph |
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| Publication Number | Publication Date |
|---|---|
| CN211609780U true CN211609780U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020035233.6U Expired - Fee Related CN211609780U (en) | 2020-01-08 | 2020-01-08 | Supporting injection device for electroencephalograph |
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| Country | Link |
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| CN (1) | CN211609780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113633298A (en) * | 2021-08-13 | 2021-11-12 | 上海大学 | Device for quickly injecting brain electric cap conductive paste |
-
2020
- 2020-01-08 CN CN202020035233.6U patent/CN211609780U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113633298A (en) * | 2021-08-13 | 2021-11-12 | 上海大学 | Device for quickly injecting brain electric cap conductive paste |
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Granted publication date: 20201002 |