JP5806042B2 - Sliding electrode connection - Google Patents

Description

  The present invention relates to biological information such as an electrocardiograph or a monitor of biological information obtained by connecting to a protruding terminal portion formed on a contact electrode attached to a chest of a subject. The present invention relates to a sliding electrode connecting part for acquiring biological information guided to an acquiring device.

  In general, an electrocardiogram is performed to examine an electrocardiogram abnormality such as arrhythmia or ischemic heart disease. In the electrocardiogram, electrodes are attached to the wrist, both ankles, and the chest of the subject, the minute electromotive force generated by the activity of the heart is detected with these electrodes, and the electrocardiogram waveform is detected using the potential difference of the detected electromotive force. To get.

  When a minute electromotive force is detected from the chest, for example, as shown in Patent Document 1, a planar contact electrode is attached to the chest. Then, an electrode clip or an electrode hook provided at the tip of the cable led out from the electrocardiograph is connected to a terminal portion protruding from the outer surface of the planar contact electrode, thereby detecting the detection detected by the contact electrode. Power information (electrical pulse) is input to the electrocardiograph.

  The clip for electrodes includes a pair of clip members that are joined so that the semicylindrical portions at the front end portions can be opened and closed to the left and right. These semi-cylindrical parts are biased by springs in the direction of closing each other, and contacts made of metal plates are provided on each of them. In the pair of clip members, the semi-cylindrical portions at the front end portion are opened by bringing the knobs provided on the rear end sides close to each other, and the terminal portions are sandwiched by the contacts of these semi-cylindrical portions that are biased by a spring Thus, the contact electrode is connected.

  In addition, the electrode hook has an insertion hole for inserting the terminal portion and a contact that presses the terminal portion inserted into the insertion hole so that the contact portion is inserted when the terminal portion is inserted into the insertion hole. By inserting against the urging force, it is electrically connected to the terminal portion through the contact.

JP 2003-10138 A

  However, when performing an electrocardiogram using a conventional electrode clip, when connecting to a contact electrode attached to the chest, the tip of the clip member was picked with both fingers and the tip was opened. Later, since the terminal part of the contact electrode was sandwiched, the work was troublesome.

  In addition, since the electrode hook inserts the terminal portion of the contact electrode against the urging force of the contact, a force is applied in the direction of pressing against the subject, which causes discomfort to the subject. Further, it is desired to further reduce the size of the electrode clip and the electrode hook for connecting the contact electrode and the cable so as not to cause discomfort to the subject as much as possible.

  This invention is made | formed in view of this point, and it aims at providing the slide-type electrode connection part which can be mounted | worn easily without giving a discomfort to a subject, and can implement | achieve small size and weight reduction.

One aspect of the sliding electrode connecting portion of the present invention is such that a terminal portion having a neck portion and a head portion having a larger diameter than the neck portion is projected from the surface of a planar contact electrode attached to a living body. A slidable electrode connecting part for detachably attaching to the terminal part to obtain biological information from the contact electrode,
A connecting portion main body having a facing surface portion arranged to face the contact electrode and from which a cable is led out from the base end portion,
An insertion hole portion formed in the central portion of the opposed surface portion with a diameter larger than the head portion of the terminal portion, and the terminal portion is inserted therein,
The opposed surface portion is formed continuously with the insertion hole portion and extending toward the distal end portion side of the connection portion main body, has a width smaller than the outer diameter of the head portion, and positions the neck portion. An engaging groove that engages the head;
It is a leaf spring material, and is arranged extending downward from above the insertion hole portion toward the engagement groove portion in the connection portion main body, and the neck portion is disposed in the engagement groove portion. A contact terminal member that contacts the head portion by pressing the head portion of the terminal portion by elastic deformation above the engagement groove portion when positioned is adopted.

  According to the present invention, it can be easily mounted without causing discomfort to the subject, and a reduction in size and weight can be realized.

The figure which shows the slide-type electrode connection part and contact electrode which concern on one embodiment of this invention The bottom view of the slide type electrode connection part which concerns on one embodiment of this invention Sectional drawing which shows typically the principal part of the slide-type electrode connection part which concerns on one embodiment of this invention. Sectional drawing of the cable connected to the slide-type electrode connection part which concerns on one embodiment of this invention Sectional drawing which shows typically the state which attached the slide type electrode connection part which concerns on one embodiment of this invention to the contact electrode

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

  FIG. 1 is a diagram showing a sliding electrode connection unit 100 according to an embodiment of the present invention and a contact electrode 40 to which the sliding electrode connection unit 100 is connected.

  1 is fixed to a distal end portion 31 of a cable 30 connected to a biological information acquisition device such as an electrocardiograph, and is detachably connected to a planar contact electrode 40. The slide electrode connection portion 100 shown in FIG. Is done. In other words, the slide-type electrode connecting portion 100 has a flat plate-like connecting portion main body 110 to which the terminal portion 46 of the contact electrode 40 is inserted and engaged, and the cable 30 is connected to the base end portion of the connecting portion main body 110. Has been derived.

  Usually, the contact electrode 40 is used by being directly attached to a living body (here, the skin of the chest of the subject). For this reason, a disposable electrode is used as the contact electrode 40 used in the present embodiment. This prevents the contact electrode 40 itself from being reused, prevents infection to other subjects, gives the subject a sense of hygiene and eliminates anxiety.

  The contact electrode 40 has a structure in which a soft conductive pad 44 is provided on one surface of a thin sheet-like base pad 42 and a hook-shaped terminal portion 46 is provided on the other surface. Furthermore, one surface (back surface) 42a of the base pad 42 has adhesiveness so that conductive contact with the living body can be easily performed.

  Before use, a removable tape is stuck on the back surface 42a which is the adhesive surface of the base pad 42. The terminal portion 46 is provided so as to protrude from the conductive pad 44, and is exposed to the outside through the other surface (front surface) 42 b of the base pad 42. The terminal portion 46 is formed at the tip of the neck portion 46a and the neck portion 46a sandwiched by connecting devices such as a conventional clip-type electrode connection portion or hook-type electrode connection portion, and is larger than the outer diameter of the neck portion 46a. An outer diameter, that is, a head 46b having a diameter larger than that of the neck 46a.

  When the contact electrode 40 configured as described above is used, the tape on the back surface 42a of the base pad 42 is peeled off, and the adhesive surface (back surface 42a) of the base pad 42 is brought into contact with and adhered to the skin. By this adhesion, the conductive pad 44 also comes into contact with the skin surface, and the electric pulse from the measurement site is detected by the conductive pad 44. The electric pulse is sent to a biological information acquisition device such as an electrocardiograph through the conductive pad 44, the terminal portion 46, the sliding electrode connecting portion 100, and the cable 30, and is displayed. Waveform analysis is also performed.

  Arc-shaped constricted portions 112 are formed on both side surfaces of the connecting portion main body 110 so that the user can easily pinch the connecting portion main body 110.

  The connecting portion main body 110 is made of an insulating material, for example, a synthetic resin such as plastic or a hard resin having an insulating property.

  FIG. 2 is a bottom view of the sliding electrode connection portion 100, and FIG. 3 is a cross-sectional view schematically showing a main configuration of the sliding electrode connection portion 100. As shown in FIG.

  As shown in FIG. 2, the connection portion main body 110 includes a bottom surface portion (opposing surface portion) 120 that is disposed to face the base pad 42 when attached to the contact electrode 40. The bottom surface portion 120 is formed with a long hole 130 into which the terminal portion 46 of the contact electrode 40 is inserted and engages with the inserted terminal portion 46.

  Specifically, the elongated hole 130 is formed continuously with the insertion hole 132 formed on one end side and the insertion hole 132, and the other end side from the insertion hole 132 (the front end side of the connection body 110). And an engaging groove portion 134 extending to the front.

  The insertion hole 132 is formed with a larger diameter than the head 46 b of the terminal portion 46.

  The engaging groove part 134 has a width smaller than the outer diameter of the head part 46b. The engagement groove portion 134 of the present embodiment has a width smaller than the outer diameter of the head portion 46b and larger than the outer diameter of the neck portion 46a. In the present embodiment, the engagement groove 134 is formed as a part of the long hole 130 formed in the bottom surface 120, but is not limited thereto. As long as the engaging groove portion 134 is configured to guide the movement of the terminal portion 46 with a width smaller than the outer diameter of the head portion 46b and to engage the head portion 46b by positioning the neck portion 46a within the width. It may be configured as follows. For example, the width of the portion that is continuous with the insertion hole 132 in the long hole 130 is formed as the width into which the head 46 b is inserted, and in addition, the width of the portion that is continuous with the insertion hole 132 is formed in the long hole 130. A leaf spring is arranged vertically. With these leaf springs, the neck 46a located in the engagement groove 134 may be sandwiched and formed to engage with the head 46b. Further, when the leaf spring is a conductive leaf spring, by connecting a signal line to the leaf spring, the leaf spring is electrically connected to the terminal portion 46 (particularly, the neck portion 46a to be contacted). Can be used as a terminal part.

  Here, as shown in FIG. 3, the engaging groove portion 134 guides the neck portion 46a of the terminal portion 46, and is positioned inside the engaging groove portion 134, so that the head portion 46b above the neck portion 46a is positioned. Engage.

  Further, in the connection portion main body 110, a contact terminal member 140 and a shield plate portion 150 that covers the contact terminal member 140 are disposed above the engagement groove portion 134.

  Here, the contact terminal member 140 is formed of a conductive metal leaf spring material. The contact terminal member 140 is connected to the end of the signal line 32 of the cable 30. In the present embodiment, the contact terminal member 140 is connected to the signal line 32 on the proximal end side of the connection portion main body 110. The contact terminal member 140 is disposed in the connecting portion main body 110 with a downward gradient from the insertion hole 132 side toward the engaging groove portion 134 side, and the head portion 46b is elastically deformed above the engaging groove portion 134. By pressing, it contacts the head 46b. The contact terminal member 140 is in contact with the head portion 46b of the terminal portion 46 located in the engaging groove portion 134, and is connected to the signal from the terminal portion 46 via the signal line 32 (see FIG. 4) of the cable 30. To guide.

  In the present embodiment, the contact terminal member 140, which is a conductive metal leaf spring material, is arranged in a descending gradient, but is not limited thereto. The contact terminal member 140 is provided so as to be separated from the shield plate portion 150 and can be guided to come into contact with the terminal portion 46 when the neck portion 46a is positioned in the engagement groove portion 134. It may be configured as follows. For example, the contact terminal member 140 may be arranged in parallel with the extending direction of the connection portion main body 110, in other words, in parallel with the bottom surface portion 120, or with an upward slope.

  Above the contact terminal member 140, a shield plate 150 is disposed so as to be spaced apart from the contact terminal member 140 and cover the contact terminal member 140.

  The shield plate part 150 has conductivity, and covers a connection part between the contact terminal member 140 and the terminal part 46. The shield plate portion 150 is preferably formed of a planar surface having conductivity. Here, the shield plate portion 150 is formed using a conductive sheet metal, a conductive sheet, a conductive film, or the like, and the upper surface of the connection portion main body 110. It is arranged over the entire surface of the part.

  The shield plate portion 150 covers the contact terminal member 140 from above, and shields electrical noise such as noise caused by fluorescent lamps and commercial power sources in rooms where ECG examinations are performed, and rubbing clothes. Thus, unlike the case of performing an electrocardiogram examination using a conventional electrode clip, it is less susceptible to noise caused by fluorescent light in the room where the electrocardiogram examination is carried out, static electricity due to rubbing of clothes, adhesion of water drops, adhesion of dust or the like. Therefore, an accurate electrocardiogram signal can be acquired without adding an unnecessary signal to the detected signal.

  The shield plate part 150 is disposed in the connection part main body 110 above the elongated hole 130 by insert molding or double molding together with the contact terminal member 140. As a result, the shield plate 150 is not exposed to the outside in a state where the sliding electrode connecting portion 100 is attached to the terminal portion 46.

  The shield plate portion 150 is connected to the shield wire 36 of the cable 30 on the proximal end side of the connection portion main body 110. In addition, here, the connection portion between the shield plate portion 150 and the shield wire 36 is partitioned from the connection portion between the signal line 32 and the contact terminal member 140 by an insulating resin portion that is a part of the connection portion main body 110. ing.

  FIG. 4 shows a cross-sectional view of the cable 30. As shown in FIG. 4, the cable 30 to which the sliding electrode connecting portion 100 is fixed has a signal line 32 disposed in the center, and the signal line 32 is covered with an insulating covering material 34. A conductive shield wire 36 is disposed on the outer periphery of the material 34. Further, the shield wire 36 is covered with an external insulating covering material 38 that serves as an outer cover of the cable 30. The cable 30 is a distal end portion 31, the signal wire 32 is connected to the connection terminal member 140 (see FIG. 3) inside the sliding electrode connection portion 100, and the shield wire 36 is connected to the shield plate portion 150 (see FIG. 3). It is connected to the. Via this cable 30, the sliding electrode connection part 100 acquires biological information from the contact electrode 40 attached to the living body.

  When using the sliding electrode connection part 100 of the present embodiment, first, the contact electrode 40 is brought into contact with the living body (here, the skin of the subject).

  Then, the terminal portion 46 is inserted into the insertion hole portion 132 of the sliding electrode connecting portion 100 from the head 46b side (see FIGS. 3 and 5). Then, as shown in FIG. 3, the neck portion 46 a of the terminal portion 46 is positioned inside the insertion hole portion 132, and the head portion 46 b of the terminal portion 46 is positioned in the connection portion main body 110.

  Next, the connecting portion main body 110 is slid to the cable 30 side, and the neck portion 46 a is moved into the engaging groove portion 134.

  Then, the terminal portion 46 is positioned in the engagement groove portion 134 to the end side, and the head portion 46b is engaged with the engagement groove portion 134 as shown in FIG. In addition to being in a state where it does not come out, it comes into electrical contact with the contact terminal member 140 while being pressed from above.

  As described above, the slide-type electrode connecting portion 100 inserts the terminal portion 46 into the insertion hole portion 132, slides the connecting portion main body 110, and the terminal portion 46 (the neck portion 46a and the head portion in the connecting portion main body 110). 46 b) can be easily attached to the electrode 40 simply by moving it into the engaging groove 134.

  Further, when the sliding electrode connecting portion 100 is attached to the terminal portion 46, the terminal portion 46 (specifically, the terminal portion 46 is described in detail) simply by inserting the terminal portion 46 into the connecting portion main body 110 and sliding it. 46 is engaged with the head 46 b) and abuts against the connection terminal member 140 to be electrically connected. In other words, it can be easily configured as compared with a clamping structure or the like that is clamped from the left and right of the terminal portion 46 by using a spring material in order to engage with the terminal portion 46. That is, since the connection terminal member 140 that is a leaf spring is disposed on the engagement groove portion 134 and the planar shield plate portion 150 such as a sheet metal, a sheet shape, or a film shape is disposed thereon, Further downsizing can be achieved. Thereby, when performing an electrocardiogram inspection, the operation | work which connects a cable to an electrode can be performed easily. In addition, when connecting to the contact electrode 40 attached to the subject, a force is applied in the sliding direction instead of pressing against the subject, which makes the subject uncomfortable compared to the conventional hook type. Not give.

  As described above, in the sliding electrode connection portion 100, the connection terminal member 140 connected to the contact electrode 40 (specifically, the terminal portion 46 of the contact electrode 40) is surrounded and covered with the insulating connection portion main body 110. At the same time, it is covered with the shield plate 150 at the top. The shield plate 150 can eliminate noise that affects the connection portion between the connection terminal member 140 and the contact electrode 40. In other words, when an electrocardiogram is performed using the sliding electrode connection unit 100, it may be due to noise caused by fluorescent light or commercial power in the room where the electrocardiogram is performed, static electricity due to rubbing of clothes, adhesion of water droplets, or adhesion of dust, etc. The reliability of the detected biological information (signal) is improved without receiving noise, the biological information (signal) is output accurately via the cable 30, and the heart connected to the device to which the cable 30 is connected is accurate. Electric information can be acquired.

  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 slide-type electrode connecting portion according to the present invention can be easily mounted without causing discomfort to the subject, has the effect of realizing a reduction in size and weight, and connects the contact electrode and the biological information acquisition device. When acquiring an electrocardiogram waveform, the patient's QOL can be improved, which is useful.

DESCRIPTION OF SYMBOLS 30 Cable 31 Tip part 32 Signal line 36 Shield line 40 Contact electrode 42 Base pad 44 Conductive pad 46 Terminal part 46a Neck part 46b Head part 100 Sliding electrode connection part 110 Connection part main body 120 Bottom face part 130 Elongated hole 132 Insertion hole part 134 Engaging groove 140 Contact terminal member 150 Shield plate

Claims (4)

A terminal portion having a neck portion and a head portion having a larger diameter than the neck portion protrudes from the surface of the planar contact electrode attached to the living body, and is detachably attached to the terminal portion. A slide-type electrode connecting part for obtaining biological information from
A connecting portion main body having a facing surface portion arranged to face the contact electrode and from which a cable is led out from the base end portion,
An insertion hole portion formed in the central portion of the opposed surface portion with a diameter larger than the head portion of the terminal portion, and the terminal portion is inserted therein,
The opposed surface portion is formed continuously with the insertion hole portion and extending toward the distal end portion side of the connection portion main body, has a width smaller than the outer diameter of the head portion, and positions the neck portion. An engaging groove that engages the head;
It is a leaf spring material, and is arranged extending downward from above the insertion hole portion toward the engagement groove portion in the connection portion main body, and the neck portion is disposed in the engagement groove portion. A contact terminal member that comes into contact with the head by pressing the head of the terminal by elastic deformation above the engagement groove when positioned.
Comprising
Sliding electrode connection. A shield plate portion disposed outside the contact terminal member and spaced apart from the contact terminal member and covering the contact terminal member;
The sliding electrode connection part according to claim 1 . The contact terminal member is a conductive leaf spring material that is elastically deformed and contacts the terminal portion.
The sliding electrode connection part according to claim 1 or 2 . The cable is derived and a shield line and the signal line from said connection unit main body,
The shield plate part is connected to the shield wire,
The sliding electrode connection part according to claim 2 .

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