KR20170019033A

KR20170019033A - Sensor for measuring biological signal

Info

Publication number: KR20170019033A
Application number: KR1020150112750A
Authority: KR
Inventors: 송원호; 최남규; 손승남
Original assignee: 참엔지니어링(주)
Priority date: 2015-08-10
Filing date: 2015-08-10
Publication date: 2017-02-21

Abstract

The present invention relates to a sensor for measuring a bio-signal, and more particularly to a sensor for measuring a bio-signal, which does not cause pain during bonding, The present invention also relates to a sensor for measuring a living body signal capable of accurately detecting a living body signal by uniformly adhering to the surface of the skin when the body is adhered to the body part.
A sensor for measuring a living body signal of the present invention is a sensor for measuring a living body signal of a human body, comprising: a substrate portion provided with an electrode pattern for collecting and transmitting the measured living body signal; And a pad portion formed on an outer surface of the conductive member provided on the upper portion of the substrate portion to fix the conductive member or to have an adhesive force for contacting the human body.
The sensor for measuring a living body signal of the present invention is capable of measuring a living body signal accurately as it comes into uniform contact with the body when measuring a living body signal, and a conductive member for measuring a living body signal is provided in a hydrogel type so that the wrinkles and sebum And a pad portion is provided on the surgeon of the hydrogel type conductive member so that the conductive member is electrically connected to the bio-signal collecting electrode It has an effect that it can be fixed so as to maintain the connection.

Description

[0001] The present invention relates to a sensor for measuring a biological signal,

The present invention relates to a sensor for sensing and collecting a bio-signal, including bio-signals in various fields such as improving a learning ability or evaluating exercise ability including a medical field, and in particular, We use various bio-signals such as electrocardiogram, EMG, and EEG to measure. The present invention relates to a sensor for measuring such a biological signal.

Biomedical signals are signals that indicate the physical condition of a human, and are mainly used for diagnosing diseases or health conditions. The living body signal includes an electrocardiogram, an electroencephalogram, an electromyogram, etc. made of an electric signal, a blood pressure, a body temperature, a pulse wave, etc. constituted by physical signals, and is composed of various types of signals composed of blood sugar amount, oxygen saturation, .

Electrocardiograms, electroencephalograms, electromyograms, etc. appearing as electrical signals among bio-signals are collected by attaching a sensor to the skin, and then a signal composed of high and low potentials is collected, and noise is removed and amplified to a usable degree.

In order to collect bio-signals composed of electrical signals, it is necessary to measure the electrical signals by attaching sensors to the skin. Since the intensity of the signals is weak, it is difficult to collect the bio-signals. It is necessary to attach the sensor to the sensor so that the smaller the sensor is, the more the sensor can be attached so as not to interfere with the operation. In addition, the sensor is usually required to be attached to the skin, but the skin has sweat, oil and the like.

FIG. 4 is a view of a conventional bio-signal sensor for measuring brain waves. The conventional bio-signal measurement sensor includes an electric circuit 20 for measuring and transmitting a bio-signal to a thin substrate 10, A conductive liquid gel 30 for enhancing close contact with the skin is provided on the central portion 40 of the sensor. When a pressure is applied to the skin, a liquid gel spreads to fill the space between the skin and the sensor, And the central portion 40 is provided in the form of a sponge so that the liquid gel 30 spreads well.

However, since the center portion 40 of the conventional blood glucose sensor is provided in the form of a sponge, the adhesive property to the skin is lowered and the liquid gel 30 is spread. Therefore, the sensor is strongly adhered to the skin, However, when the liquid gel 30 is not spread well, there is a problem that the sensing ability is significantly reduced.

In addition, since the bio-signal sensor is manufactured in the form of a thin film, the edges of the sensor are thin and sharp, and adhere to the skin.

In order to solve the above problems, the present invention provides a sensor for measuring a bio-signal of the present invention, which does not cause pain at the time of adhesion and is easy to adhere to the body without damaging the contacted skin, The present invention provides a sensor for biosignal measurement which is flexible enough to be deformed, has excellent adherence to the body, and uniformly adheres to the surface of the skin when adhering to the body part, thereby enabling accurate biosignal sensing.

According to another aspect of the present invention, there is provided a sensor for measuring a living body signal of a human body, comprising: a substrate unit having an electrode pattern for collecting and transmitting the measured living body signal; A conductive member which is electrically connected to the electrode pattern and measures a living body signal in contact with a human body; and a pad portion formed on an outer portion of the conductive member provided on the substrate portion to fix the conductive member or to have an adhesive force for contacting the human body .

Further, the conductive member is characterized by being made of a hydrogel material.

In addition, the pad portion is formed on the outer side of the conductive member and is provided at the outer end of the substrate portion in the form of a partition.

Further, the pad portion is characterized by being tapered toward the central portion of the substrate portion.

Further, the substrate part may further include a connector for transferring the bio-signal to the outside, and the substrate part may be a structure in which the periphery of the substrate part is brought into contact with the upper part of the human body in order to prevent injury to the human body during bio- As shown in FIG.

The connector further includes a wing portion extending in a predetermined range at a portion where the board portion and the connector are connected and formed with a groove to facilitate folding.

The electrode pattern provided on the substrate portion includes a bio-signal collecting electrode for collecting the measured bio-signal and a wiring portion for transmitting the same to the connector. The bio-signal collecting electrode is provided at two places on the substrate portion, And the signal collecting electrodes are connected to the connector through independent insulated wiring portions.

Further, the electric wiring and the electrode are formed to include any one of Ag, Au, Cu, and Al, which are conductive metals.

The present invention having the above-described structure has an effect that it is possible to accurately measure a living body signal as the living body comes into uniform contact with the body during the measurement of the living body signal.

In addition, a conductive member for measuring a living body signal is provided in a hydrogel type, so that the adhesive force is excellent regardless of wrinkles, sebum, etc. of the skin.

In addition, the substrate portion is formed in the form of a film, and the skin is prevented from being scratched by a sharp edge.

In addition, there is an effect that the pad member is provided on the surgeon of the conductive member of the hydrogel type so that the conductive member can be fixed so as to maintain the electrical connection with the bio-signal collecting electrode.

FIG. 1 is a perspective view showing a sensor for measuring a bio-signal according to an embodiment of the present invention,
2 is a view showing a substrate portion and an electrode pattern of a sensor for measuring a living body signal of the present invention,
3 is a sectional view of a pad section of a sensor for measuring a living body signal according to the present invention,
4 is a perspective view of a conventional sensor for measuring a biological signal.

Hereinafter, a sensor for measuring a bio-signal according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing a sensor for measuring a living body signal according to an embodiment of the present invention, FIG. 2 is a view showing a base part and an electrode pattern of a sensor for measuring a living body signal of the present invention, 1 is a view showing a cross section of a pad of a sensor for signal measurement.

Referring to FIG. 1, a sensor for measuring a bio-signal according to an embodiment of the present invention includes a substrate unit 100 having a bio-signal collecting electrode 110 and a wiring unit 120 for collecting and transmitting a bio- A conductive member 200 electrically connected to the bio-signal collecting electrode 110 of the substrate 100 and electrically connected to the bio-signal collecting electrode 110 for sensing the bio-signal, A pad member having an adhesive force so that the conductive member 200 can be fixed to maintain a battery connection with the bio-signal collecting electrode 110 or to be in contact with a human body together with the conductive member 200 to sense a bio- (300).

The substrate unit 100 of the present invention is configured to serve as a base of a sensor, and electrode patterns 110 and 120 for sensing and transmitting a living body signal are provided thereon. Since the electric patterns 110 and 120 are provided on the upper part of the base plate 100, the base plate 100 should be made of a material that can be basically insulated and must be attached to the skin. Therefore, the base plate 100 has a flexible property . Therefore, the substrate 100 is preferably formed of a film material that can be insulated and warped, and may be a flexible printed circuit board (FPCB) type, which is currently in the spotlight.

When the substrate part 100 is formed of a thin film material or has a flexible shape, the edges are sharp. Therefore, when the substrate part 100 is attached to the body for measurement of a living body signal or when the connector 130 is connected to an external device, It can damage the skin and cut it. In order to prevent such skin damage, a wing portion 150 is provided in a certain range from a point where the board portion 100 and the connector 130 are connected to each other. After attaching the sensor to the skin, Skin damage can be prevented. The wing portion 150 is formed with a guide groove 160 to facilitate folding upward. The wing 150 may be provided in a predetermined range from the connector 130 when the two bio-signal collecting electrodes 110 are provided, for example, So that there is little fear that the substrate 100 will move and the skin is damaged. However, since the portion connected to the connector 130 is connected to the external device, the movement of the external device There is a high possibility of damaging the skin. Of course, if the outer peripheral portion of the substrate 100 is formed as a folded structure on the upper part of the human body, it is more effective than providing the wing 150, but it requires a lot of production costs such as addition of manufacturing air.

In addition, it is preferable that the bio-signal collecting electrode 110 of the present invention is provided at two points when measuring brain waves or the like. Since the brain waves themselves are difficult to distinguish from noise as low-frequency waves, they are measured at two places, It is possible to remove EEG and to measure accurate EEG. In the case of configuring the sensor with two channels, it is preferable that the wiring parts 120 transmitting the bio-signals measured by the respective sensors are independently provided so as to be mutually insulated.

A structure in which the end portion of the substrate part 100 is protruded and the edge part of the structural part protruding from the end part does not directly come into contact with the skin is formed, The sensor structure has a structure in which the sensor structure is prevented.

The electrode patterns 110 and 120 provided at the upper portion of the substrate unit 100 are configured to sense a living body signal generated by an electrical signal and collect the collected living body signals to be transmitted to a device utilizing the living body signal. The electrode patterns 110 and 120 include a bio-signal collecting electrode 110 for collecting bio-signals and a wiring unit 120 for transferring collected bio-signals to the outside. Although the bio-signal collecting electrode 110 may be formed only in a portion where the conductive member 200 is present, it is preferable that the bio-signal collecting electrode 110 is configured to spread over the entire surface of the substrate 100 to facilitate sensing and collection of bio-signals. Further, it is preferable that the sensor is formed in the form of a thin film conductor on the substrate part 100 so that the sensor can be made thin and the circuit is not damaged even when warped. If the electrode patterns 110 and 120 are formed in the form of the thin film conductor, the electrode patterns 110 and 120 are less likely to be broken and the electrode patterns 110 and 120 are formed And the thickness of the sensor can be reduced.

Since the bio-signal collecting electrode 110 is basically formed in a shape similar to that of the conductive member 200, it is formed in a wide shape, but the wiring portion 120 is formed in a thin line shape in the form of a lead. At this time, There is a possibility that the portion where the wiring portion 120 is contacted is cut off by pressure or wrinkling when the sensor is attached. Therefore, the connecting portion of the living body signal collecting electrode 110 and the wiring portion 120, It is preferable to form the first electrode 120 so as to be gradually narrowed to the width of the second electrode 120. It can be seen that the connection portion between the bio-signal collecting electrode 110 and the wiring portion 120 of FIG. 1 is formed as a teat 140.

The electrode patterns 110 and 120 may be formed on the film by depositing or printing one or more metals of conductive Au, Ag, Cu, and Al. Examples of the metal constituting the electric circuit 110 include Au, Ag, Cu, and Al. However, the present invention is not limited thereto, and any metal may be used as long as it can best sense the biological signal to be measured. However, it is desirable to consider not only the conductivity but also the harmlessness of the human body as much as the sensor needle attached to the human body, considering the ease of manufacture. It is preferable that the pattern of the electrode patterns 110 and 120 is formed so that a specific pattern is not advantageous but distributed evenly over the sensor surface as described above. However, it is preferable that the pattern of the electrode patterns 110 and 120 is formed in consideration of ease of fabrication, .

The electrode patterns 110 and 120 may be formed by vapor deposition or printing, but the present invention is not limited thereto, and any method may be used as long as a circuit can be formed in the form of a thin film wire. The deposition method is a method in which the electrode patterns 110 and 120 are formed on the film by heating, melting, and evaporating the metal in a vacuum state to thinly fuse and coagulate the film on the film. In the vacuum container, And the vapor pressure is increased by heating to form the electrode patterns 110 and 120 on the film.

The printing method is a sheet-based method of printing on a flat plate, or a lamination process of bonding two or more films using an adhesive, followed by a roll-to-roll process to form an electrode pattern (110, 120) may be formed.

The conductive member 200 is electrically connected to the bio-signal collecting electrode 110 of the electrode patterns 110 and 120 and attached to the human body to measure bio-signals, which are electrical signals. Since it is a constitution for measuring a living body signal generated in the human body, it is basically conductive, and conventionally, it is constituted of a liquid phase, and when it is attached, a liquid conductive member in the capsule is blown up to spread on a sponge, There is a problem in that the sensing function is lost due to the disappearance of the conductive member of the liquid when the patient calls for pain and needs to change the attachment position or reattach the capsule because the capsule must be excessively pressed to attach the sensor. In order to solve this problem, the conductive member 200 of the present invention is formed of a gel-type or a sticky solid material, and can be easily attached to the skin and can be detached and attached many times, .

In addition, since the conductive member 200 is configured to adhere the skin and the sensor, the conductive member 200 should be made of a material harmless to the human body. Since the conductive member 200 is configured to adhere the sensor to the skin in which foreign objects such as bending and holding are present, it may be any material having a property that it can be adhered even if there is a foreign material such as a holding material, . However, it is preferable that the conductive member 200 is made of a hydrogel material, because the hydrogel is not only completely liquid but has excellent adhesiveness even when foreign matter is present on the skin, even though the hydrogel is as soft as the liquid. Hydrogels exhibit properties similar to those of living tissues in the state of absorbing a large amount of water in an aqueous solution due to cohesive forces such as covalent bonding, hydrophobic bonding, and physical bonding. When the stress is applied, the hydrogel is quickly rearranged to restore its original structure It can be easily adhered to the skin while facilitating the transmission of the biological signal. Because of this characteristic, the hydrogel of the conductive member 200 maintains excellent adhesive force even on the wrinkles and sebum on the surface of the human skin, does not cause pain due to skin irritation when attached to the skin, Because it adheres well to the skin with adhesive force, it has the advantage of measuring and collecting bio-signals.

The pad unit 300 may be formed on the outer surface of the conductive member 200 provided on the substrate 100 so that the conductive member 200 may be fixed to maintain the electrical connection with the bio- It is made of a material having an adhesive force. The pad portion 300 may be formed of a conductive material, but it is preferable that the pad portion 300 is made of a resilient material such as a sponge in order to eliminate pain of a patient when the pad portion 300 comes into contact with a human body. 1, a groove 310 is formed in a central portion of the pad portion 300, and a conductive member 200 is formed in the groove 310 portion. If the conductive member 200 is provided as a hydrogel, the hydrogel is in a liquid phase and has a property of being cured by ultraviolet rays or the like, so that the pad portion 300 having the groove 310 is attached to the substrate portion 100, The pad member 300 is filled with a hydrogel and hardened. At this time, the pad member 300 prevents the hydrogel from flowing sideways or has a predetermined shape of the conductive member 200 . 3, the conductive member 200 is formed on the front surface of the sensor, and the pad portion 300 is formed on the front surface of the sensor before curing When the hydrogel is formed in a tapered shape toward the central portion, the hydrogel can be filled without bubbles. In this case, if the conductive member 200 is coated with a thin film that can transmit electricity, the efficiency of collection of bio-signals can be maximized while maintaining the shape of the sensor. Of course, even if the groove 310 is provided in the groove 310 as shown in FIG. 1 and the conductive member 200 is provided in the groove 310, it is advantageous in that the durability of the sensor can be improved when it is coated with a thin film.

Substrate portion: 100 conductive member: 200
Pad part: 300

Claims

A sensor for measuring a biological signal of a human body,
A substrate unit having an electrode pattern for collecting and transmitting the measured bio-signals,
A conductive member electrically connected to the electrode pattern provided on the substrate portion and contacting the human body to measure a living body signal;
And a pad portion formed on a peripheral portion of the conductive member provided on the upper portion of the substrate portion and having an adhesive force for fixing the conductive member or for contacting the human body.

In claim 1,
Wherein the conductive member is made of a hydrogel material.

In claim 1,
Wherein the pad portion is formed on an outer surface of the conductive member and is provided at the outer end of the substrate portion in the form of a partition wall.

In claim 3,
Wherein the pad portion is tapered toward a central portion of the base portion.

In claim 1,
Wherein the substrate portion further comprises a connector for transferring the measurement-collected bio-signal to the outside,
Wherein the substrate portion is formed by folding the body portion of the body portion, the periphery of the substrate portion being in contact with the body portion for collection of a living body signal, in order to prevent a human body from being scratched when collecting a living body signal.

In claim 5,
Further comprising a wing portion extending in a predetermined range at a portion where the board portion and the connector are connected to each other and having a groove formed therein for easy folding.

In claim 5,
Wherein the electrode pattern provided on the substrate portion includes a bio-signal collecting electrode for collecting the measured bio-signal and a wiring portion for transmitting the bio-signal to the connector,
Wherein the bio-signal collecting electrode is provided at two places on the substrate portion, and each bio-signal collecting electrode is connected to the connector through an independent insulated wiring portion.

In claim 1,
Wherein the electric wiring and the electrode are formed of any one of Ag, Au, Cu, and Al, which are conductive metals.