Disposable electroencephalogram monitoring sensor

Abstract

The utility model discloses a disposable electroencephalogram monitoring sensor which comprises a foam base body provided with four electrodes and a chip connected with the four electrodes, one face of the foam base body is provided with conductive adhesive which is fixedly adhered to the four electrodes, and one face of the foam base body is further provided with double faced adhesive tape located around the electrodes. The electrodes are connected to the foam base body through the conductive adhesive, the 3M double-faced adhesive tape is arranged in the area outside the electrodes, the shielding layer is arranged on the surface of the double-faced adhesive tape, the conductive adhesive is arranged on the surface of the 3M double-faced adhesive tape, the shielding layer is arranged on the surface of the double-faced adhesive tape, and the conductive adhesive is arranged between the electrodes and the foam base body. The arrangement of the 3M double faced adhesive tape and the shielding layer ensures low impedance, enables current to be efficiently transmitted and ensures that adhesion cannot be lost, the ejection hook magic tape is further arranged between the electrode and the foam base body, and the ejection hook magic tape is composed of a plurality of tiny hair needles, can be fully attached to the skin and is matched with the electrode and the silver oil circuit to enhance transmission of electroencephalogram signals.

Description

Technical Field

[0001] The utility model relates to the field of electroencephalogram monitoring, in particular to a disposable electroencephalogram monitoring sensor. Background Art

[0002] The bispectral index (BIS) is a mixed information fitting of the power and frequency of the EEG through dual-frequency analysis into an optimal number, expressed in a scale of 0-100, with 100 indicating that a patient is in a fully awake state, and 0 indicating that the patient's brain electrical activity is completely absent. A BIS value below 70 indicates that the possibility of awakening is very low, while a BIS value below 60 indicates that the patient has already lost consciousness. The working principle of the disposable EEG monitoring sensor is based on the measurement of EEG signals. It introduces EEG signals into the amplifier through electrodes, and then undergoes filtering, amplification, sampling and other processing, and finally converts them into digital signals. EEG signals are changes in the potential of the human cortex, which can reflect the activity of brain neurons.

[0003] Existing disposable EEG monitoring sensors will directly adhere to the scalp when used, but the adhesion effect of existing disposable EEG monitoring sensors is poor and the impedance is high. Direct contact with the skin through the electrode will result in low fit, which in turn leads to low transmission efficiency of brain wave signals. Utility Model Content

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a disposable EEG monitoring sensor to solve the problem mentioned in the background technology that the existing disposable EEG monitoring sensor has poor adhesion effect, high impedance, and direct contact with the skin through the electrode piece resulting in low fit, which in turn leads to low transmission efficiency of EEG signals.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a disposable EEG monitoring sensor, comprising a foam matrix with four electrodes, and a chip connected to the four electrodes, one side of the foam matrix is ​​provided with conductive glue to bond and fix the four electrodes, one side of the foam matrix is ​​also provided with double-sided tape located around the electrodes, a shielding layer is bonded to the surface of the double-sided tape, and ejection hook Velcro is provided between the four electrodes and the foam matrix.

[0006] Preferably, the foam matrix includes: a connecting foam sheet, a first foam sheet, a second foam sheet, a third foam sheet, a connecting foam strip and a fourth foam sheet connected in sequence.

[0007] Preferably, the four electrodes are respectively fixed on the same-direction surface of the first foam sheet, the second foam sheet, the third foam sheet and the fourth foam sheet.

[0008] Preferably, the connecting foam sheet is in the shape of a long strip, and a silver-oil circuit is fixed on the same side of the connecting foam sheet as the electrode, and the silver-oil circuit is commonly connected to the four electrodes.

[0009] Preferably, an insert is fixed to a side of the connecting foam sheet away from the first foam sheet, a chip is fixed to a side of the insert in the same direction as the silver-oil circuit, and the chip is connected to the silver-oil circuit.

[0010] Preferably, the double-sided tape is fixed on one side of the first foam sheet, the second foam sheet, the third foam sheet and the fourth foam sheet.

[0011] Compared with the prior art, the beneficial effects that the utility model can achieve are: the utility model connects electrodes on the foam matrix through conductive glue, 3M double-sided tape is provided in the area outside the electrode, and a shielding layer is provided on the surface of the double-sided tape. The arrangement of the conductive glue, 3M double-sided tape and the shielding layer ensures low impedance, enables efficient current transmission, and ensures that adhesion will not be lost. An ejection hook Velcro is also provided between the electrode and the foam matrix, which is composed of numerous tiny hair needles and can fully fit on the skin, and cooperates with the electrode and the silver oil circuit to enhance the transmission of EEG signals. The sensor with low impedance and good adhesion can fit the skin tightly and accurately measure the patient's EEG bispectral index. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the shielding layer of the utility model;

[0014] Figure 3 A schematic diagram of a product of the prior art;

[0015] Figure 4 This is a schematic diagram of the injection hook Velcro of the utility model;

[0016] Among them: 1. Insert; 2. Electrode; 3. Foam matrix; 4. Chip; 5. Silver oil circuit; 6. Connecting foam sheet; 7. First foam sheet; 8. Second foam sheet; 9. Third foam sheet; 10. Fourth foam sheet; 11. Connecting foam strip; 12. Conductive glue; 13. Shielding layer; 14. Double-sided tape; 15. Injection hook Velcro. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0018] Embodiment:

[0019] like Figure 1-4 As shown, the utility model provides a disposable EEG monitoring sensor, including a foam substrate 3 provided with four electrodes 2, and a chip 4 connected to the four electrodes 2, one side of the foam substrate 3 is provided with a conductive glue 12 to adhere and fix the four electrodes 2, and one side of the foam substrate 3 is also provided with a double-sided adhesive 14 located around the electrode 2, and a shielding layer 13 is adhered to the surface of the double-sided adhesive 14, and a shooting hook Velcro 15 is provided between the four electrodes 2 and the foam substrate 3;

[0020] This disposable EEG monitoring sensor is compatible with devices with BIS modules such as Kehui and Mindray. Before use, prepare the above-mentioned monitor equipment with BIS module, BIS adapter cable, BIS signal collector and BIS sensor adapter cable, as well as the practical sensor of this invention, and connect them in sequence; the double-sided adhesive tape 14 is 3M double-sided adhesive tape, and the shielding layer 13 can be release paper; the injection hook Velcro 15 is composed of many tiny hair needles, which can fully fit on the skin, and cooperate with the electrode 2 and the silver oil circuit 5 to enhance the transmission of EEG signals.

[0021] In this embodiment, specifically, the foam matrix 3 includes: a connecting foam sheet 6, a first foam sheet 7, a second foam sheet 8, a third foam sheet 9, a connecting foam strip 11 and a fourth foam sheet 10 connected in sequence.

[0022] In this embodiment, specifically, the four electrodes 2 are respectively fixed on the same-direction surfaces of the first foam sheet 7 , the second foam sheet 8 , the third foam sheet 9 and the fourth foam sheet 10 .

[0023] In this embodiment, specifically, the connecting foam sheet 6 is in the shape of a long strip, and a silver oil circuit 5 is fixed on the same side of the connecting foam sheet 6 as the electrode 2, and the silver oil circuit 5 is connected to the four electrodes 2;

[0024] Among them, the silver-oil circuit 5 is a circuit printed with silver ink. Silver ink has good conductivity and stability, and can ensure the reliability and stability of the circuit. In the medical field, the practical sensor can further ensure the stable transmission of electrical signals through the silver-oil circuit 5.

[0025] In this embodiment, specifically, an insert sheet 1 is fixed on the side of the connecting foam sheet 6 away from the first foam sheet 7, and a chip 4 is fixed on the same side of the insert sheet 1 as the silver-oil circuit 5, and the chip 4 is connected to the silver-oil circuit 5;

[0026] Among them, the four electrodes 2 are in contact with four parts of the surface of the scalp of the head respectively, capturing the electrical activity signals of brain neurons, and transmitting the electrical signals to the chip 4 through the silver-oil line 5. The chip 4 is connected to the BIS sensor adapter and other adapter and conversion components, and finally transmitted to the monitor with a BIS module.

[0027] In this embodiment, specifically, the double-sided tape 14 is fixed to one side of the first foam sheet 7 , the second foam sheet 8 , the third foam sheet 9 and the fourth foam sheet 10 , and the tearing opening 15 is crescent-shaped and is opened in the shielding layer 13 of the first foam.

[0028] Working principle: When using the disposable EEG monitoring sensor, apply disinfectant alcohol on the patient's forehead and dry it, tear off the shielding layer 13 on the surface of the sensor through the tear notch, adhere the first foam sheet 7 with electrode 2 above the root of the nose on the patient's forehead through double-sided tape 14, adhere the third foam sheet 9 with electrode 2 above one eyebrow through double-sided tape 14, adhere the fourth foam sheet 10 with electrode 2 to the temple, and the connecting foam strip 11 can be bent to adapt to patients with different head circumferences. Finally, the plug-in sheet 1 with chip 4 is connected to the monitor with BIS module through the adapter and conversion component. The electrode 2 fits the skin tightly with the injection hook Velcro 15, and the electrical signal is received and transmitted to the chip 4 through the silver oil line 5, and then transmitted by the chip 4 to a series of adapter and conversion components, and finally to the monitor with BIS module. The monitor filters, amplifies, samples and other processes the signal, and finally converts it into a digital signal, and displays the BIS value.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable electroencephalogram monitoring sensor, comprising a foam substrate (3) provided with four electrodes (2), and a chip (4) connected to the four electrodes (2), characterized in that: One side of the foam substrate (3) is provided with a conductive adhesive (12) which is bonded and fixed to the four electrodes (2); one side of the foam substrate (3) is also provided with a double-sided adhesive (14) located around the electrodes (2); a shielding layer (13) is bonded to the surface of the double-sided adhesive (14); and ejection hook Velcro (15) is provided between the four electrodes (2) and the foam substrate (3).

2. The disposable EEG monitoring sensor according to claim 1, characterized in that: The foam matrix (3) comprises: a connecting foam sheet (6), a first foam sheet (7), a second foam sheet (8), a third foam sheet (9), a connecting foam strip (11), and a fourth foam sheet (10) which are connected in sequence.

3. The disposable EEG monitoring sensor according to claim 2, characterized in that: The four electrodes (2) are respectively fixed on the same-direction surface of the first foam sheet (7), the second foam sheet (8), the third foam sheet (9) and the fourth foam sheet (10).

4. The disposable EEG monitoring sensor according to claim 2, characterized in that: The connecting foam sheet (6) is in the shape of a long strip, and a silver-oil circuit (5) is fixed on the same side of the connecting foam sheet (6) as the electrode (2), and the silver-oil circuit (5) is commonly connected to the four electrodes (2).

5. The disposable EEG monitoring sensor according to claim 4, characterized in that: An insert sheet (1) is fixed to the side of the connecting foam sheet (6) away from the first foam sheet (7), a chip (4) is fixed to the same side of the insert sheet (1) as the silver-oil circuit (5), and the chip (4) is connected to the silver-oil circuit (5).

6. The disposable EEG monitoring sensor according to claim 3, characterized in that: The double-sided adhesive tape (14) is fixed on one side of the first foam sheet (7), the second foam sheet (8), the third foam sheet (9) and the fourth foam sheet (10).

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