JP6027774B2 - Biological information acquisition electrode - Google Patents

Description

  The present invention relates to a biological information acquisition electrode that is worn on a subject and measures biological information such as an electrocardiogram, and more particularly to a biological information acquisition electrode that is used in combination with X-ray imaging.

  Conventionally, there are various types of bioelectrodes used for measurement of biosignals such as electrocardiograms, and these are properly used depending on purposes and applications.

  A bioelectrode used when acquiring a body surface electrocardiogram in a catheter room or the like is used while performing fluoroscopy with an X-ray together with a catheter inserted into a subject during a cardiac catheter test or the like. For this reason, for example, as shown in Patent Document 1, an electrode used in combination with X-ray imaging includes an electrode part attached to the body surface and a lead part for sending a signal detected by the electrode part to a measuring device. It is made of carbon, which is a material that transmits X-rays, so that it is not photographed during X-ray fluoroscopy.

JP 7-47058 A

By the way, it is known that the catheter room has a lot of noise from an electric knife and noise from other devices in addition to hum noise and electrostatic noise caused by a commercial power source.
For this reason, when a conventional bioelectrode having a carbon electrode portion and a lead portion is used in the catheter chamber, noise affects the bioelectrode, and an unnecessary signal is added to the detected signal, so that an accurate electrocardiogram signal can be obtained. May be difficult to obtain.

  Therefore, in body surface electrocardiogram acquisition in a catheter room, in order to acquire an accurate electrocardiogram signal, a bioelectrode that is less susceptible to noise is desired.

  The present invention has been made in view of such a point, and even when used in combination with X-ray imaging, it is difficult to be affected by ambient noise, and biometric information acquisition that can reduce manufacturing costs and product costs can be achieved. An object is to provide an electrode.

One aspect of the biological information acquisition electrode of the present invention is a base body portion having X-ray permeability and insulation, and a carbon electrode portion formed by carbon printing on the first surface of the base body portion. A carbon lead portion formed by carbon printing and extending from the carbon electrode portion on the first surface of the base body portion, and a position overlapping the carbon electrode portion on the second surface side of the base body portion Formed by carbon printing and shielded by the carbon electrode part, and formed by carbon printing at a position overlapping the carbon lead part on the second surface side of the base body part. It possesses carbon lead shield unit for shielding, wherein the substrate main body, forms a layered structure superimposed by bending the film-like planar material having an X-ray transparent and insulating properties, laminate The one carbon layer has the first surface, the other layer overlapping the one layer has the second surface, and the carbon electrode is formed on the second surface by printing. A configuration in which a shield part and the carbon lead shield part are provided is adopted.

  ADVANTAGE OF THE INVENTION According to this invention, the electrode for biological information acquisition which can be used together with a X-ray imaging, is hard to receive to the influence of ambient noise, and aims at reduction of manufacturing cost and product cost is realizable.

1 is an overall perspective view showing a configuration of a biological information acquisition electrode according to an embodiment of the present invention. Plan view of the biometric information acquisition electrode 2 is a cross-sectional view taken along line AA in FIG. 2 is a cross-sectional view taken along line BB in FIG. Fig. 3 is a development view of a biometric information acquisition electrode according to an embodiment of the present invention The figure which shows the assembly process of the electrode for bioinformation acquisition

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an overall perspective view showing a configuration of a biological information acquisition electrode 10 according to an embodiment of the present invention, FIG. 2 is a plan view of the biological information acquisition electrode 10, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 2, and FIG. 4 is a cross-sectional view taken along line BB in FIG. The “lower surface” of the biological information acquisition electrode 10 means the surface of the biological information measurement electrode 10 that is attached to the subject, and the “upper surface” refers to the biological information measurement electrode 10. It means the surface opposite to the surface to be attached to the subject. FIG. 1 is a view of the biological information acquisition electrode 10 as seen from the attachment surface (lower surface) facing up.

  The biometric information acquisition electrode 10 shown in FIG. 1 is a disposable type that can be removed after measurement and discarded together with the lead wire from the viewpoint of hygiene or X-ray transmission, that is, a disposable lead wire integrated electrode (hereinafter referred to as a disposable electrode). Electrode). The biological information acquisition electrode 10 has an electrode head portion 12 including a cable portion 11 and an electrode portion 30 when roughly classified functionally. The cable unit 11 transmits a biological signal detected by the electrode head 12.

  The electrode head 12 detects a biological signal from the measurement subject by bringing the attachment surface (lower surface) 12a from which the electrode portion 30 is exposed into contact with the body surface of the measurement subject.

  Next, the biological information acquisition electrode 10 configured as described above will be described in detail.

  The biological information acquisition electrode 10 includes a base material 20, a carbon electrode part 32, a carbon lead part 34, a carbon electrode shield part 42 that shields the carbon electrode part 32, and a carbon lead shield part that shields the carbon lead part 34. 44.

  The base material 20 is made of a film-like or sheet-like flexible sheet material having X-ray transparency and insulation, for example, polyethylene terephthalate (PET), and includes an upper surface 12b (see FIG. 2) and a lower surface. 12a has a pair of surfaces.

  The base material 20 has a laminated structure formed by bending a planar material. The base material 20 has a sheet shape of a four-layer structure (first to fourth layer portions 20a to 20d) formed by bending a planar material.

  The base material 20 has a base material main body portion 22 formed by bending a planar material, and the base material main body portion 22 is the center of four layer portions 20a to 20d formed of the planar material. The second layer portion (one layer portion) 20b and the third layer portion (the other layer portion) 20c are formed. That is, the base material main body 22 includes a biometric information acquisition part (carbon electrode part 32 and carbon lead part 34) and a shield part (carbon It is interposed between the electrode shield part 42 and the carbon lead shield part 44).

  A carbon electrode portion 32 and a carbon lead portion 34 formed to extend from the carbon electrode portion 32 are formed on the first surface (surface on the “lower surface” side of the biological information acquisition electrode 10) 22 a of the base body portion 22. Is formed. Here, the carbon electrode portion 32 and the carbon lead portion 34 are formed on the first surface 22 a of the base body portion 22 by carbon printing. Carbon printing is performed not only by carbon (C) but also by synthesis of carbon (C) and silver chloride (AgCl), etc., thereby reducing the impedance when biometric information is acquired.

  Also, as shown in FIGS. 3 and 4, the carbon electrode shield portion is formed on the second surface (surface on the “upper surface” side of the biological information acquisition electrode 10) 22 b side of the base body portion 22, here the second surface. 42 and a carbon lead shield part 44 are formed. Here, the carbon electrode shield part 42 and the carbon lead shield part 44 are formed on the second surface 22b by carbon printing.

  The carbon electrode portion 32 is exposed to the lower surface (first surface) 12a side of the base material 20 through a through hole 24 formed in the first layer portion 20a that forms the lower surface 12a of the base material 20 (FIG. 1). To FIG. 3).

  A gel layer 33 is provided on the upper surface of the carbon electrode portion 32. The gel layer 33 is a gel layer having conductivity, adhesiveness, and hygroscopic expansion. The gel layer 33 is bonded to the lower surface (first surface) of the base body portion 22 by its own adhesive force so as to cover the carbon electrode portion 32. The gel layer 33 is fixed to the subject's chest by its own adhesive force, and transmits an electrocardiogram signal (electrical excitation of the heart), which is a minute electromotive force generated by the activity of the subject's heart, to the carbon electrode portion 32. . The gel layer 33 and the carbon electrode part 32 constitute an electrode part 30.

  The carbon lead part 34 is formed in the base member 20 in the cable part 11 that is elongated from the electrode head part 12 on which the carbon electrode part 32 is provided, along the extending direction of the cable part. Specifically, the carbon lead part 34 is formed in a part constituting the cable part 12 on the lower surface 22 a of the base body part 22. One end portion 34 a of the carbon lead portion 34 is connected to the carbon electrode portion 32, and the other end portion 34 b is an end portion of the lead portion 11 and is exposed on the first surface (lower surface) 22 a side of the substrate main body portion 22. Yes. The exposed other end portion 34b forms a lead terminal portion and is connected to a measuring device such as a polygraph, thereby transmitting an electrocardiogram signal from the carbon electrode portion 32 to the measuring device.

  Further, the carbon lead portion 34 on the base body portion 22 is sealed by covering the entire surface except the other end portion 34b which is a lead terminal portion with the lead sealing layer portion 26 of the first layer portion 20a. Has been. That is, the first layer 20 a is provided on the lower surface of the carbon lead portion 34. The 1st layer part 20a is one layer of the planar material which comprises the base material 20, and has X-ray permeability and insulation. The first layer portion 20 a is attached by adhering to the lower surface 22 a of the substrate main body portion 22. The carbon electrode part 32 and the carbon lead part 34 are formed on the base material 20 by carbon printing. For this reason, cost reduction can be achieved compared with the case where the carbon electrode part 32 and the carbon lead part 34 are formed only with a carbon material.

  As shown in FIG. 4, the carbon electrode shield part 42 and the carbon lead shield part 44 are composed of the second surface (upper surface) 22 b of the substrate body 22, that is, the third layer portion of the planar material forming the substrate 20. 20c. The carbon electrode shield part 42 and the carbon lead shield part 44 are formed on the third layer part 20c by carbon printing.

  The carbon electrode shield part 42 and the carbon lead shield part 44 are formed on the upper surface 22b of the base body part 22 at positions overlapping the carbon electrode part 32 and the carbon lead part 34 on the lower surface 22a of the base body part 22, respectively. Yes.

  The projected area of the carbon electrode shield part 42 on the base body part 22 is larger than the projected area of the carbon electrode part 32 on the base body part 22. The carbon electrode shield part 42 is disposed above the carbon electrode part 32 through the base body part 22 so as to cover the entire surface of the carbon electrode part 32. As a result, the carbon electrode shield part 42 electrically shields noise affecting the carbon electrode part 32 from the outside. Further, the projected area of the carbon lead shield portion 44 is larger than the projected area of the carbon lead portion 34. The carbon lead shield portion 44 is disposed above the carbon lead portion 34 via the base body portion 22 so as to cover the entire surface of the carbon lead portion 34.

  As shown in FIG. 4, one end 44 a of the carbon lead shield portion 44 is connected to the carbon electrode shield portion 42, and the other end 44 b is an end portion of the lead portion 11, and the second end of the base body portion 22. Two surfaces (upper surface) 22b are exposed. The exposed other end portion 44b forms a shield terminal portion and is connected to a GND of a device to be connected.

  As a result, the carbon lead shield part 44 electrically shields the noise affecting the carbon lead part 34 from the outside. Thus, the carbon lead shield part 44 reduces noise to the carbon lead part 34 in the biological information acquisition electrode 10.

  Since the carbon electrode shield part 42 and the carbon lead shield part 44 are formed of carbon, together with the carbon electrode part 32 and the carbon lead part 34, it is easy to transmit X-rays and is difficult to be photographed by X-rays. The carbon electrode shield part 42 and the carbon lead shield part 44 are formed on the base material 20 by carbon printing. For this reason, cost reduction can be achieved compared with the case where the carbon electrode shield part 42 and the carbon lead shield part 44 are formed only with a carbon material.

  The layered shield portion composed of the carbon electrode shield portion 42 and the carbon lead shield portion 44 formed on the second surface (upper surface) 22 b of the base body portion 22 is bonded to the upper surface of the base body portion 22. It is sealed by being covered with a four-layer part (shield sealing layer part) 20d.

  The 4th layer part 20d forms the base material 20 by bending one sheet-like material with the 1st layer part 20a, the 2nd layer part 20b, and the 3rd layer part 20c. Each of the first layer portion 20a to the fourth layer portion 20d has a similar outer shape that is folded and overlapped. Each of the first layer portion 20a to the fourth layer portion 20d includes a head forming portion that forms the electrode head portion 12 of the processed biological information acquisition electrode 10 and a cable portion forming portion that forms the cable portion 11, and each other A planar material is formed by being continuous at the head formation site.

  FIG. 5 is a development view of the biological information acquisition electrode according to the embodiment of the present invention.

  As shown in FIG. 5, in the biological information acquisition electrode 10, the carbon electrode portion 32 and the carbon lead portion 34 are formed on the second layer portion 20 b in the planar material having the continuous first layer portion 20 a to fourth layer portion 20 d. Is formed. Further, a carbon electrode shield part 42 and a carbon lead shield part 44 are formed in the third layer part 20c adjacent to the second layer part 20b.

  The carbon electrode part 32, the carbon lead part 34, the carbon electrode shield part 42, and the carbon lead shield part 44 are each formed by carbon printing on the same surface of the planar material.

  As shown in FIG. 6, the sheet-like material that has been carbon-printed in advance at predetermined locations (the second layer portion 20b and the third layer portion 20c) in this manner is used as the heads of the first layer portion 20a to the fourth layer portion 20d. Each of the layer portions 20a to 20d is stacked by being folded by alternately changing the folding direction at the portion forming portion. The arrow in FIG. 6 shows the direction laminated | stacked by folding. The biological information acquisition electrode 10 is formed by bonding the laminated layer portions 20a to 20d.

  Specifically, the first layer portion 20a in which the through hole 24 is formed and the second layer portion 20b in which the carbon electrode portion 32 and the carbon lead portion 34 are printed are connected to the electrode portion 30 (the carbon electrode portion 32) from the through hole 24. And the gel layer 33) is folded. Further, the second layer portion 20b and the third layer portion 20c are folded. Specifically, the surface of the second layer portion 20b provided with the carbon electrode portion 32 and the carbon lead portion 34 (corresponding to the first surface 22a), and the carbon electrode shield portion 42 and the carbon lead shield portion 44 provided with 3 are provided. The surface of the layer portion 20c (corresponding to the second surface) is bonded back to back. The base body part 22 is formed by the bonded second layer part 20b and third layer part 20c. Further, the fourth layer portion 20d is folded so as to cover the carbon electrode shield portion 42 and the carbon lead shield portion 44 exposed on the third layer portion 20c, and the third layer portion 20c and the fourth layer portion 20d are bonded.

In particular, in the biological information acquisition electrode 10, the lead sealing layer portion 26 of the first layer portion 20a is disposed on the lower surface of the second layer portion 20b (the first surface 22a of the base body portion 22), and the lower surface 22a. The upper carbon lead 34 is sealed. The lead sealing layer portion 26 of the first layer portion 20a is formed continuously with the second layer portion 20b, and is attached to the second layer portion 20b by being bent.
The fourth layer portion (cider sealing layer portion) 20d is disposed on the upper surface of the third layer portion 20c (the second surface 22b of the base body main body 22), and the carbon electrode shield portion 42 on the upper surface 22b and The carbon lead shield part 44 is sealed. The fourth layer portion (shield sealing layer portion) 20d is formed continuously with the third layer portion 20c, and is attached to the third layer portion 20c by being bent. Thereby, the sheet-like base material 20 is formed, and the biological information acquisition electrode 10 is formed.

  According to the biological information acquisition electrode 10 of the present embodiment, it has the base material 20 formed of a planar material having X-ray transparency and insulating properties. A carbon electrode part 32 formed by carbon printing and a carbon lead part 34 formed by extending from the carbon electrode part 32 are provided on the lower surface (first surface) of the base body part 22 of the base material 20. In addition, the carbon electrode shield part 42 and the carbon lead formed by carbon printing on the upper surface (second surface) side of the base body part 22, here the upper surface, in a position overlapping the carbon electrode part 32 and the carbon lead part 34, respectively. A shield part 44 is provided. The carbon electrode shield part 42 and the carbon lead shield part 44 shield noise from the outside to the carbon electrode part 32 and the carbon lead part 34. With this configuration, when used with X-ray fluoroscopy in the catheter room, X-rays are not imaged, such as hum noise due to commercial power, static noise, noise due to an electric knife, noise from other devices in the catheter room, etc. Can be used without receiving ambient noise.

  Further, since the shield portions (the carbon electrode shield portion 42 and the carbon lead shield portion 44) covering the carbon electrode portion 32 and the carbon lead portion 34 are formed by carbon printing, respectively, they can be manufactured at a lower cost than a metal shield. .

  Further, in the biological information acquisition electrode 10, the carbon electrode shield part 42, the carbon lead shield part 44, the carbon electrode part 32, and the carbon lead part 34 are respectively a second layer part and a third layer part on one side of the planar material. Printed on. That is, the carbon electrode shield part 42 and the carbon lead shield part 44 can be formed on the same surface with the carbon electrode part 32 and the carbon lead part 34 with respect to the planar material to be the base body part 22.

  Therefore, the carbon electrode shield part 42 and the carbon lead shield part 44, and the carbon electrode part 32 and the carbon lead part 34 can be easily formed by performing carbon printing once on one side of the sheet material. Can be produced. In other words, it is not necessary to provide the electrode and lead and the shield for preventing noise interference with these materials in separate steps with respect to the material that is the base material for the biometric information acquisition electrode.

  Further, in the biological information acquisition electrode 10, the lead sealing layer portion 26 that covers the carbon lead portion 34 on the lower surface side, together with the substrate main body portion 22 and the fourth layer portion 20 d that is a shield sealing layer portion, is the base material 20. Formed as a planar material. For this reason, the lead sealing layer part 26 can be easily manufactured as a part of the base material 20 only by bending the planar material.

  As described above, according to the biological information acquisition electrode 10 of the present embodiment, it is difficult to be affected by ambient noise during use, and the manufacturing cost and product cost can be reduced, and the disposable lead is provided. It becomes an electrode for biological information acquisition.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The biometric information acquisition electrode according to the present invention can be used in combination with X-ray imaging, is less susceptible to ambient noise, and has the effect of being able to reduce manufacturing costs and product costs. It is useful as a thing used when acquiring a body surface electrocardiogram in a cardiac catheter test.

DESCRIPTION OF SYMBOLS 10 Biological information acquisition electrode 20 Base material 20a 1st layer part 20b 2nd layer part (one layer part)
20c 3rd layer part (the other layer part)
20d 4th layer part (shield sealing layer part)
22 base material main part 22a 1st surface (lower surface of base material main part)
22b 2nd surface (upper surface of base-material main-body part)
24 through hole 26 lead sealing layer part 30 electrode part 32 carbon electrode part 34 carbon lead part 42 carbon electrode shield part 44 carbon lead shield part

Claims (2)

A base body having X-ray transparency and insulation;
A carbon electrode portion formed by carbon printing on the first surface of the base body portion;
On the first surface of the base material main body, a carbon lead portion formed by carbon printing and extending from the carbon electrode portion;
A carbon electrode shield part that is formed by carbon printing at a position overlapping the carbon electrode part on the second surface side of the base body part, and shields the carbon electrode part;
A carbon lead shield part that is formed by carbon printing at a position overlapping the carbon lead part on the second surface side of the base body part, and shields the carbon lead part;
I have a,
The base body portion has a laminated structure in which a film-like planar material having X-ray transparency and insulation is folded and overlapped,
One layer portion to be laminated has the first surface,
The other layer portion overlapping the one layer portion has the second surface,
The carbon electrode shield part and the carbon lead shield part formed by printing are provided on the second surface.
Biological information acquisition electrode. A lead sealing layer portion disposed on the first surface of the one layer portion and sealing the carbon lead portion on the first surface;
Said arranged on the other layer portion of the second surface, shield sealing layer unit for sealing the carbon electrode shield and the carbon lead shield portion on the second surface,
Have
The lead sealing layer portion is continuously formed on the one layer portion, and is attached to the one layer portion by being bent,
The shield sealing layer portion is continuously formed on the other layer portion, and is attached to the other layer portion by being bent.
The biological information acquisition electrode according to claim 1 .

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