JP6518964B2 - Belt-type electrode and bioimpedance measuring device using the same - Google Patents

Description

  The present invention relates to a belt-type electrode detachable from the body and a bioimpedance measurement device using the same.

  Conventionally, in order to measure biological information of the body, there is one in which a belt-type electrode is attached to the body and the belt-type electrode is connected to a measuring device (see, for example, Patent Document 1).

JP 2008-289678 A

  In order to make an accurate measurement, it is necessary to bring the electrode into close contact with the body, and a belt type electrode that can be easily attached is desired.

  An object of the present invention is, in consideration of the above-mentioned fact, to provide a belt-type electrode which is excellent in mountability to a measurement target site of a living body.

The belt-type electrode according to claim 1 is provided on a flexible strip-shaped electrode member disposed over the entire circumference of the measurement target portion, and the strip-shaped electrode member, and holds the strip-shaped electrode member in a loop shape. A buckle having a variable loop length, and an output unit provided on the buckle and electrically connected to the strip electrode member to output biological information of the measurement target portion , the buckle being A fixed buckle fixed to one end of the strip electrode member in the longitudinal direction and a fixed buckle separated from the fixed buckle and slidably provided at a longitudinal intermediate portion of the strip electrode member And a movable buckle engageable from the separated state .

In the belt-type electrode according to claim 1, the movable buckle is slid relative to the strip-shaped electrode member before the fixed buckle and the movable buckle are engaged and the strip-shaped electrode member is wound around the measurement target portion of the body. By adjusting the length of the body, it can be wound around and attached to the measurement target part of the body. Since the buckle can make the loop length of the strip electrode member variable even after adjusting the length of the strip electrode member as described above, the loop length of the strip electrode member is shortened, that is, it is looped The strip-shaped electrode member can be tightened to ensure that the entire strip-shaped electrode member is in close contact with the outer peripheral surface of the measurement target portion.

  Since the output part of the buckle is electrically connected to the strip electrode member, it is possible to output the biological information of the measurement target part from the output part.

According to a second aspect of the present invention, in the belt type electrode according to the first aspect, the fixed buckle is composed of a beam portion which elastically deforms and bends, and a claw portion formed on the tip side of the beam portion. Forming the pair of locking pieces in a direction perpendicular to the vertical direction, and the movable buckle is such that the strip electrode member is on the upper side in the vertical direction with the hook portion insertion hole into which the pair of locking pieces can be inserted The inserted electrode member insertion hole is provided on the lower side in the vertical direction in a direction orthogonal to the vertical direction .

In the belt type electrode according to claim 2, in the movable buckle, the hook portion insertion hole into which the locking piece of the fixed buckle can be inserted has on the upper side, and the electrode member insertion hole through which the strip electrode member is inserted is the lower side. Therefore, the movable buckle and the fixed buckle can be easily engaged, and the length of the strip electrode member can be adjusted in the engaged state or in the separated state.

The invention according to claim 3 is the belt-type electrode according to claim 2 , further comprising a tilting member having a recess formed on the lower surface, the electrode member insertion hole having a protrusion on the bottom surface, and the protrusion The inclining member is disposed so as to be pivotable by engaging with the recessed portion, and the band-like electrode member is inserted into a gap between the inclining member and the ceiling surface of the electrode member insertion hole.

In the belt type electrode according to claim 3, when the strip-like electrode member is pulled in the direction in which the loop length is extended, the tilting member swings and bites into the strip-like electrode member and movement of the strip-like electrode member is blocked. After the strip-shaped electrode member is wound around the measurement target portion in a measurable state, the strip-shaped electrode member does not go back and loosen in the electrode member insertion hole.

The invention according to a fourth aspect is the belt-type electrode according to any one of the first to third aspects, provided at the other end of the strip electrode member in the longitudinal direction and embedding a magnet inside The movable buckle is provided with a magnet inside and has a fixing member locking surface capable of locking the fixing member by the magnetic force of the magnet and the magnet embedded in the fixing member.

In the belt type electrode according to claim 4, when the fixed buckle is engaged with the moving buckle, a loop is formed in the strip electrode member, and the other end side in the longitudinal direction of the strip electrode member is left without forming the loop. The part protrudes from the moving buckle. In the belt type electrode according to the fourth aspect, the fixing member provided at the other end of the band electrode member is locked to the fixing member engaging surface of the moving buckle by the magnetic force of the magnet, thereby leaving the remaining band electrode member. It is possible to obtain the correct measurement value by preventing the other parts from contacting the body.

The invention according to claim 5 is the belt type electrode according to any one of claims 1 to 4, wherein a pair of belt type electrodes according to any one of claims 1 to 4 is attached. At the time of measurement, a long strip set to a distance necessary for measurement between one strip electrode member disposed at one of the measurement target sites and the other strip electrode member disposed at the other of the measurement target sites. A locking portion for locking with a locking member in which a magnet is embedded at an end portion of the spacing jig, and embedding a magnet that generates a suction force with the magnet embedded in the locking member The locking portion is provided on the fixed buckle.

In the belt type electrode according to claim 5 , the locking portion of the fixed buckle is provided by providing the fixed buckle with the locking portion for embedding the magnet that generates a suction force with the magnet embedded in the locking member. Thus, it is possible to grasp that the locking member in which the magnet is embedded at the end of the separation jig is locked. The locking portion, the locking member provided on the end portion of the elongated spaced jig can be locked by the suction force of the magnet.
For example, when a pair of belt-type electrodes are attached to a measurement target site at a predetermined interval, a locking member at one end of one end portion of a long separation jig having the same dimension as the predetermined interval is one belt-type electrode engaged with the engaging portion of the fixed buckle, locking the locking member of the other end of the spacing jig to the engagement portion of the fixed buckle other belt-type electrodes, the pair so spaced jig is straight By adjusting the distance between the belt-type electrodes, it is possible to mount the pair of belt-type electrodes at a predetermined distance without using a measure or the like. In addition, the separation jig can be removed from the buckle as appropriate.

The bioelectrical impedance measurement device according to claim 6 includes a pair of belt-type electrodes according to any one of claims 1 to 5 and a pair for causing an electric current to flow to the measurement target site by contacting the measurement target site. Based on the current application electrode, the input unit for inputting the body specifying information, the value of the voltage generated between the pair of belt-type electrodes, and the value of the current output from the pair of current application electrodes And an arithmetic unit for calculating an index related to the tissue state of the body based on the calculated biological impedance and the body specifying information input by the input unit .

In the bioimpedance measuring device according to claim 6 , by bringing the pair of current application electrodes into contact with the region to be measured, a current can be supplied to the region to be measured by the pair of current application electrodes.
Further, by bringing the pair of belt-type electrodes into contact with the measurement target site, it is possible to measure the voltage generated by the current flowed to the measurement target site with the pair of belt-type electrodes.
The input unit can input body specifying information.
The computing device computes the bioimpedance of the measurement target site based on the value of the voltage generated between the pair of belt-type electrodes and the value of the current output from the pair of current application electrodes, and the computed bioimpedance An indicator related to the tissue condition of the body can be determined based on the body specifying information input by the input unit.

  Since the belt-type electrode of the present invention is configured as described above, the mountability of the living body to the measurement target portion is improved. In addition, the bioimpedance measuring device of the present invention is excellent in the mountability of the belt type electrode to the measurement target site of the living body.

(A) is a perspective view which shows the belt type electrode which released the connection of the fixed buckle and the movement buckle, (B) is a perspective view which shows the belt type electrode which connected the fixed buckle and the movement buckle. It is sectional drawing which shows the belt-type electrode of the state before clamp | tightening the band-shaped electrode member made loop shape to a measurement object site | part. (A) is an enlarged cross-sectional view of the engagement portion between the protrusion and the recess, and (B) is an enlarged cross-sectional view of the anti-return projection portion. It is a perspective view which shows the belt type electrode of the state which removed the cover. (A) is a perspective view which shows the belt-type electrode of the state which attached the separation jig to the buckle, (B) is a perspective view which shows a separation jig. It is a figure showing the body equipped with a bioimpedance measurement device and a belt type electrode. It is sectional drawing which shows the belt-type electrode of the state which tightened and mounted | worn the strip-shaped electrode member made loop shape to the measurement object site | part. It is a perspective view showing a pair of belt type electrodes which were made to separate by predetermined distance using separation jig. It is a block diagram showing composition of a main part unit of a living body impedance measuring device.

Hereinafter, a belt-type electrode 10 according to an embodiment of the present invention will be described using the drawings.
As shown in FIG. 1, the belt-type electrode 10 according to this embodiment includes a strip-shaped electrode member 12, a buckle 14, and a fixing member 16.

(Configuration of strip electrode)
The strip electrode member 12 is provided with a flexible elastic body, more specifically, a strip 18 made of rubber having a constant thickness and a constant width, and one side of the strip 18 has a constant thickness (thin wall) and A strip-like metal electrode plate 20 formed to a fixed width is attached using an adhesive or the like, and has flexibility as a whole.

  The metal electrode plate 20 of the present embodiment is formed to be narrower than the strip 18, and is affixed inside the end edge of the strip 18 in the width direction. As the material of the metal electrode plate 20, copper, stainless steel or the like excellent in conductivity can be used, but the material is not particularly limited as long as it has conductivity, and a material which is not easily corroded is preferable. The thickness and width of the metal electrode plate 20 are not particularly limited as long as it is easy to bend, but for example, the thickness and width that can be easily wound around a measurement target site such as an arm are set. It should be good. In the metal electrode plate 20 of the present embodiment, a stainless steel plate having a thickness of 0.05 mm and a width of 10 mm is used.

The material of the strip 18 may be rubber or the like, but it is not particularly limited as long as it has flexibility and flexibility, and it is resistant to alcohol, chemicals, etc. for disinfection Is preferred. In addition, rubber is used for the strip-shaped body 18 of this embodiment.
The strip-shaped electrode member 12 of the present embodiment is obtained by sticking the strip-shaped metal electrode plate 20 on one side of the strip-shaped body 18, but the present invention is not limited to this configuration. It can also be made of a single piece of material, for example conductive rubber.

(Structure of the buckle)
The buckle 14 is configured to include a movable buckle 24 movably provided at a longitudinal intermediate portion of the strip electrode member 12 and a fixed buckle 26 attached to one longitudinal end of the strip electrode member 12.

(Movement buckle)
As shown in FIGS. 1 and 2, the vertical middle portion of the movable buckle 24 has two holes on the upper side and the lower side. Specifically, a hook portion insertion hole 28 which penetrates in the arrow F direction and the arrow B direction and whose cross section is rectangular is formed on the upper side (arrow U direction side), and penetrates in the arrow F direction and the arrow B direction. An electrode member insertion hole 30 having a rectangular cross section is formed on the lower side (arrow D direction).

  The tilting member 32 is disposed inside the electrode member insertion hole 30. As shown in FIG. 2 and FIG. 3A, a projection 34 is formed on the bottom of the electrode member insertion hole 30 in the middle of the electrode member insertion hole 30 in the longitudinal direction.

  On the other hand, on the lower surface of the tilting member 32, a recess 36 into which the protrusion 34 is inserted is formed. The tilting member 32 is capable of swinging in the direction opposite to the arrow C direction and the arrow C direction centering on the engagement portion between the protrusion 34 and the recess 36 inside the electrode member insertion hole 30.

  As shown in FIG. 2, the strip-like electrode member 12 is inserted in the gap between the tilting member 32 and the ceiling surface of the electrode member insertion hole 30 in the electrode member insertion hole 30. On the upper surface of the tilting member 32, a nonreturn return protrusion 38 is formed on the side of the protrusion 34 in the arrow F direction. As shown in FIG. 3 (B), the reverse return prevention projection 38 is a slope 38A in which the arrow B direction side is inclined at a small angle with respect to the upper surface of the tilting member 32, and the arrow F direction side is with respect to the upper surface of the tilting member 32. The vertical surface 38B is used.

  A first recess 40 is formed on the lower side of the electrode member insertion hole 30 in the movable buckle 24, and a first magnet mounting plate 44 incorporating a first magnet 42 in the first recess 40. Is inserted. As shown in FIG. 1B, the first magnet mounting plate 44 is fixed to the movable buckle 24 by a screw 46.

  As shown in FIG. 2, the lower surface of the movable buckle 24 is used as a movable buckle side separating jig locking surface 48 for locking the locking member 102 (see FIG. 5B) of the separating jig 98 described later. There is. A locking recess 52 for inserting an engaging protrusion 106 of the locking member 102 described later is formed on the movable buckle side separation jig locking surface 48.

  In addition, a second concave portion 53 is formed on the upper side of the hook insertion portion 28 in the movable buckle 24, and a second magnet attachment incorporating a second magnet 54 in the second concave portion 53. Plate 56 is inserted. The second magnet mounting plate 56 is fixed to the moving buckle 24 with a screw (not shown). The upper surface of the movable buckle 24 is a fixing member locking surface 58 for locking the fixing member 16.

(Fixed buckle)
As shown in FIGS. 2 and 4, the fixed buckle 26 is configured to include a body portion 60 and a cover 62.
A cylindrical boss having a screw hole 65 for screwing a screw 64 for fixing the strip electrode member 12 to the arrow B direction side and a screw hole 68 for screwing a screw 66 for attaching the cover 62 to the main body 60 70, a pin 74 around which the wiring cord 72 is wound is formed.

  One end of the strip electrode member 12 in the longitudinal direction is inserted into the main body 60 from the direction of the arrow D. The strip-shaped electrode member 12 is fixed by screwing the screw 64 penetrating the strip-shaped electrode member 12 into the screw hole 65 formed in the main body 60.

  A rubber bush 76 is attached to an upper portion of the main body 60, and one end side of the wiring cord 72 is inserted through the rubber bush 76. As shown in FIG. 4, the wiring cord 72 inserted inside the main body 60 is wound around the boss 70 and the pin 74 so as not to be pulled out of the main body 60. The conducting wire 72A of the wiring cord 72 is connected to the metal electrode plate 20 of the strip-shaped electrode member 12 by soldering or the like. As shown in FIG. 1, at the other end of the wiring cord 72, a connector 78 for connecting to a main body unit 118 (not shown in FIG. 1) described later is connected. In addition to connecting the conducting wire 72A and the metal electrode plate 20 by soldering, for example, a lug terminal is attached to the conducting wire 72A of the wiring cord 72, and the lug terminal is a screw between the metal electrode plate 20 and the main body 60 They can be connected by sandwiching them by means of 64 or by other known methods.

  As shown in FIG. 4, the cover 62 is disposed on the side of the main body 60 in the direction of arrow B, and the screw 66 inserted through the hole 80 of the cover 62 is screwed into the screw hole 68 of the boss 70. The cover 62 is attached to the

  As shown in FIG. 1, the side portion of the main body 60 on the arrow F direction side is disposed between a pair of locking pieces 82 and a pair of locking pieces 82 extending toward the arrow F direction. A columnar portion 84 is formed.

  The locking piece 82 is formed on the main body side with a beam portion 88 that elastically deforms and bends, and a tapered claw portion 90 is formed on the tip end side of the beam portion 88. The claw portion 90 is wider at the beam portion 88 side than at the beam portion 88, and formed narrow toward the tip.

  As shown in FIG. 1, when the pair of locking pieces 82 are moved toward the hook portion insertion hole 28 of the movable buckle 24 in the direction of the arrow F, the locking pieces 82 are formed by pulling the inclined outer portions of the claws 90. It is inserted while sliding on the hole side of the hook insertion hole 28, and the pair of beam portions 88 bends in the direction to approach each other. Then, when the claws 90 pass through the hook insertion holes 28, the bent beam portions 88 move in the direction away from each other, and return to the original state before the insertion. As a result, the claw portion 90 of the locking piece 82 is caught in the opening portion of the hook portion insertion hole 28 (see FIG. 4), and the detachment of the locking piece 82 from the hook portion insertion hole 28 is prevented. Is fixed to the moving buckle 24.

  When the fixed buckle 26 is removed from the movable buckle 24, the pair of claws 90 are grasped in a direction to approach each other, the beam 88 is bent, and the claws 90 are engaged with the opening of the hook insertion hole 28 And release the locking piece 82 from the hook insertion hole 28.

  As shown in FIG. 2, a third magnet 92 is attached to the inside of the cover 62 of the fixed buckle 26. The cover 62 has a fixed buckle-side separation jig for the outer surface of the portion to which the third magnet 92 is attached to lock the locking member 102 (see FIG. 5B) of the separation jig 98 described later. It is considered as the surface 94. The fixed buckle side separation jig locking surface 94 is formed with a locking recess 96 for inserting an engagement protrusion 106 of a locking member 102 described later.

  As shown in FIG. 1, the fixing member 16 is formed of synthetic resin in a rectangular shape, and the fourth magnet 97 is embedded inside.

(Separating jig)
Next, the separation jig 98 will be described according to FIG. 5 (B).
The spacing jig 98 has the locking members 102 attached to both ends of the flexible string-like member 100. The cord-like member 100 of the present embodiment is, for example, a cord made of synthetic fiber or the like, but may be a long member having flexibility, and may be a thread, a thin rope, a belt or the like. .

  The locking member 102 is formed of a synthetic resin, and a fifth magnet 104 is embedded inside. Further, on one surface of the locking member 102, an engagement protrusion 106 which can be engaged with the locking recess 52 (see FIG. 2) of the movable buckle 24 and the locking recess 96 (see FIG. 2) of the fixed buckle 26. Is formed.

  Therefore, when the locking member 102 is brought close to the moving buckle side separating jig locking surface 48 of the moving buckle 24 and the engaging projection 106 is engaged with the locking recess 52, the engaging member 102 engages with the first magnet 42 of the moving buckle 24. The locking member 102 can be locked to the moving buckle side separation jig locking surface 48 by the suction force generated between the locking member 102 and the fifth magnet 104 (see FIG. 5A).

  In addition, when the locking member 102 is brought close to the fixed buckle side separation jig locking surface 94 of the fixed buckle 26 and the engagement protrusion 106 is engaged with the locking recess 96, the locking member 102 engages with the third magnet 92 of the fixed buckle 26. The locking member 102 can be locked to the fixed buckle side separation jig locking surface 94 by the suction force generated between the locking member 102 and the fifth magnet 104 (see FIG. 5A).

(Main unit)
Next, the main body unit 118 used when measuring the bioelectrical impedance of the body will be described according to FIGS. 6 and 9.
As shown in FIG. 6, the main body unit 118 includes a display unit 121 and an input unit 122 on the appearance. The input unit 122 includes a setting key 122a, an up key 122b, a down key 122c, and a start key 122d. Here, the up key 122 b and the down key 122 c select information and switch numerical values, and the setting key 122 a sets the selected information and the switched numerical value. In the present embodiment, by operating the setting key 122a, the up key 122b and the down key 122c, it is possible to input body specifying information such as sex, age, height and the like of the person to be measured. The start key 122 d is a means for starting power supply to the main unit 118 for starting a series of measurements, or for starting measurement. Although not shown, the main unit 118 is provided with an interface capable of communicating with an external device (for example, a portable terminal such as a smartphone, a personal computer, etc.) to communicate data with the external device and operate from the external device side. Etc. may be performed.

  Further, the main unit 118 is provided with a voltage input section 124 for connecting the connector 78 of one of the belt electrodes 10 and a current input section 132 for connecting the connector 130 provided on the wiring cord 128 of the current application electrode 126. There is. The connector 78 is detachable from the voltage input unit 124, and the connector 130 is detachable from the current input unit 132.

  The display unit 121 is a data display unit for displaying data sent from the control unit 201 which will be described later, which is an arithmetic processing unit provided in the main body, and mainly displays various kinds of biological information of the subject. Display guidance of operation etc. The input biometric information and setting items of the subject are stored in the storage unit 208 described later, or displayed on the display unit 121.

  FIG. 9 is a block diagram showing a schematic configuration of the main body unit 118 according to the present embodiment. As shown in FIG. 9, the main unit 118 includes the voltage measurement unit 202, the A / D conversion unit 203, the current generation unit 204, the storage unit 208, and the display unit 121 and the input unit 122 described above. And a power supply unit 205 and a control unit 201.

  The control unit 201 is an arithmetic processing unit of a processor such as a CPU or DSP (Digital Signal Processor), and is electrically connected to each device to control each operation to variously measure bioelectrical impedance, measure weight, etc. Perform the processing of A storage unit 208, a display unit 121, an input unit 122, an operation unit 210, a power supply unit 205, an A / D conversion unit 203, a current generation unit 204 and the like are connected to the control unit 201.

  The storage unit 208 temporarily stores body identification information, such as gender, height, and age, input by the input unit 122, measurement data, calculation results, and the like. In addition, the storage unit 208 stores a control program of the apparatus, an arithmetic expression or determination program regarding bioelectricity impedance set in advance, a frequency of an alternating current applied at the time of bioelectricity impedance measurement, and the like. Furthermore, the storage unit 208 stores an arithmetic program for calculating an index related to the tissue state, a determination program for evaluating the degree of muscle development and muscle atrophy according to the value of the index which is a ratio of bioelectrical impedance, and the like. .

  The current generator 204 is a means for outputting an alternating current flowing between one current application electrode 126 and the other current application electrode 126. The current generation unit 204 includes a reference current detection unit, an alternating current application unit, and a frequency setting unit. The control unit 201 controls the frequency setting unit to set a predetermined frequency. Further, the reference current detection unit detects the current flowing to the subject, and outputs it to the alternating current application unit as a reference current detection signal. The alternating current application unit has a current value based on the reference current detection signal, and applies an alternating current of the set frequency to the bioimpedance measurement electrode. The alternating current is applied to the subject by the pair of current application electrodes 126.

  In the present embodiment, the frequency of the alternating current output from the current generation unit 204 can be set to a plurality of values according to the purpose of measurement, and is set to 50 kHz, for example, in bioimpedance measurement or muscle volume measurement. Ru.

  The voltage measurement unit 202 is a means for measuring the voltage between the metal electrode plate 20 of one belt-type electrode 10 and the metal electrode plate 20 of the other belt-type electrode 10. The analog potential difference signal measured by the voltage measurement unit 202 is converted into a digital signal in the A / D conversion unit 203, and is input to the control unit 201.

  The power supply unit 205 is means for supplying power to each part of the electrical system of the bioelectrical impedance measurement device 1.

  The arithmetic unit 210 is a module that performs various arithmetic processing such as calculation of bioelectric impedance, and in the present embodiment, includes a bioimpedance measurement unit 210b and a muscle mass evaluation unit 210c as a function of evaluating muscle mass. ing.

  The bioelectrical impedance measurement unit 210 b obtains a bioelectrical impedance based on the alternating current applied from the current generation unit 204 and the voltage detected by the voltage measurement unit 202. Further, the muscle mass evaluation unit 210c calculates muscle mass and the like based on the bioelectrical impedance obtained by the bioelectrical impedance measurement unit 210b and the body specific information such as gender, height, and age inputted by the input unit 122, and evaluation thereof do.

(How to attach the belt type electrode 10)
The belt-type electrode 10 of this embodiment is used, for example, when measuring the bioimpedance of the measurement target region of the body. As shown in FIG. 6, the belt-type electrode 10 according to the present embodiment is mounted in a pair on the measurement target site (for example, the upper arm 112, the thigh 114, the lower leg 116, etc. of the body 110).
Hereinafter, an example of the procedure for attaching the belt-type electrode 10 to the measurement target site of the upper arm 112 and the operation will be described according to the following (1) to (4).
(1) The belt-type electrode 10 in a state in which the movable buckle 24 and the fixed buckle 26 are separated is placed on one side (for example, the lower side) of the measurement target site so that the metal electrode plate 20 can be directed to the measurement target site Place and secure moveable buckle 24 to fixed buckle 26 as shown in FIG. As a result, the strip electrode member 12 is formed in a loop shape, and the measurement target portion of the upper arm 112 is inserted into the strip electrode member 12 formed in the loop shape.

(2) The fixing member 16 of the strip-shaped electrode member 12 protruding from the movable buckle 24 is pulled in a direction (direction of arrow F) away from the movable buckle 24 to move (slide) the strip-shaped electrode member 12 relative to the movable buckle 24 The diameter of the strip-shaped electrode member 12 formed in a loop shape is reduced and tightened so that the metal electrode plate 20 of the strip-shaped electrode member 12 in a loop shape is in close contact with the measurement target portion of the upper arm 112. When the fixing member 16 of the strip electrode member 12 is pulled in the direction of the arrow F (see FIG. 2), the tilting member 32 becomes substantially parallel to the ceiling surface of the electrode member insertion hole 30 in the electrode member insertion hole 30. Even if the anti-return projection 38 does not bite into contact with the strip 18, the strip electrode member 12 can be easily moved in the arrow F direction.

In FIG. 7, a strip-shaped electrode member 12 formed in a loop shape in which the metal electrode plate 20 is in close contact with the measurement target portion of the upper arm 112 is shown in a cross-sectional view. In the strip-shaped electrode member 12 on the side formed in a loop shape, the portion which is inserted into the electrode member insertion hole 30 and comes out to the arrow B direction side is in the arrow E direction (the direction in which the loop length is expanded and obliquely downward). When it is pulled, the tilting member 32 swings in the direction of the arrow C, and the anti-return projection 38 bites into the strip 18 and the movement of the strip electrode member 12 is blocked. That is, loosening of the strip-shaped electrode member 12 formed in a loop shape and attached to the measurement target portion is prevented.
Thus, the mounting of the belt-type electrode 10 at one of the measurement target sites is completed.

(3) Next, in the same manner as in the above (1) and (2), the belt-type electrode 10 is attached to the other (elbow side) of the measurement target portion of the upper arm 112. Before mounting the electrode 10, the distance between one belt-type electrode 10 and the other belt-type electrode 10 is set as follows.

a. For example, as shown in FIG. 8, one locking member 102 of the separation jig 98 is locked to the fixed buckle side separation jig locking surface 94 provided on the fixed buckle 26 of one belt type electrode 10, and the other The other locking member 102 of the separation jig 98 is locked to the fixed buckle side separation jig locking surface 94 provided on the fixed buckle 26 of the belt type electrode 10.

b. Next, the other belt-type electrode 10 is moved in the direction of separating from the one belt-type electrode 10, and the string-like member 100 of the separation jig 98 is stretched in a straight line. As a result, the distance between one belt-type electrode 10 and the other belt-type electrode 10 can be set to a predetermined distance L (see FIG. 8) necessary for the measurement set in advance.

(4) Thereafter, the string-like member 100 of the separation jig 98 is maintained in a straight state, and the other belt-type electrode 10 is attached. After mounting both belt-type electrodes 10, the separation jig 98 can be removed, and the removed separation jig 98 can be used when mounting another belt-type electrode 10 to another measurement site.
As described above, the attachment of the pair of belt-type electrodes 10 to the measurement target portion of the upper arm 112 is completed.

  After the pair of belt-type electrodes 10 are attached to the measurement target site, as shown in FIG. 8, the fixing member 16 of the strip-like electrode member 12 protruding from the movable buckle 24 is engaged with the fixed member of the movable buckle 24. The fixing member 16 is locked to the fixing member locking surface 58 by the magnetic force of the fourth magnet 97 and the second magnet 54 in contact with the stopping surface 58. As a result, the excess strip electrode member 12 protruding from the movable buckle 24 can be formed into a loop shape with the metal electrode plate 20 inside, and the excess metal electrode plate 20 of the excess strip electrode member 12 protruding from the movement buckle 24 Can be prevented from touching the body 110. In addition, when the metal electrode plate 20 of the excessive strip shaped electrode member 12 which protrudes from the movement buckle 24 contacts the body 110, a correct measurement value may not be obtained. Therefore, it is preferable to fix the excess strip electrode member 12 protruding from the movable buckle 24 as a loop as described above. As described above, the belt-type electrode 10 of the present embodiment can be easily and reliably attached to the measurement target site of the body as described above.

  After the pair of belt-type electrodes 10 are attached, as shown in FIG. 6, the current application electrodes 126 are attached to the hands and feet. Then, the connector 78 of the belt-type electrode 10 is connected to the voltage input unit 124 of the main unit 118, and the connector 130 of the current application electrode 126 is connected to the current input 132 of the main unit 118.

  The main body unit 118 applies a current (shown by a two-dot chain line in FIG. 6) between the hand and the foot with the pair of current application electrodes 126 to measure the voltage between the pair of belt electrodes 10 at the measurement target site. , The bioimpedance is obtained based on the value of the voltage and the value of the current. Also, in the main unit 118, based on the obtained bioelectrical impedance and the body specifying information such as sex, height, age, etc., it is possible to obtain, for example, an index related to the tissue condition of the body such as muscle mass and muscle quality. it can.

Thereafter, in the same manner, a pair of belt-type electrodes 10 can be attached to the measurement target site of the other upper arm 112, the measurement target sites of the right and left thighs 114, and the measurement target sites of the left and right lower thighs 116 to obtain bioimpedance. .
The bioelectrical impedance measurement device of the present invention is composed of the belt type electrode 10, the main body unit 118, and the current application electrode 126.

(Summary)
The belt-type electrode 10 of the present embodiment is configured as described above, and has the following effects.

A. According to the belt-type electrode 10 of the present embodiment, the belt-like electrode member 12 can be easily and reliably made into the measurement target site by simply fixing the fixed buckle 26 to the movable buckle 24 and pulling one end of the belt-type electrode 10. It can be worn. In the case of an electrode cuff with a type in which the looped portion is formed by locking one end and the other end in the longitudinal direction using a surface fastener and attached to the measurement target site, the diameter of the looped portion is set after being attached. In order to make the adjustment small, it is necessary to once remove the electroded cuff from the measurement target site and perform again, and the mounting operation becomes complicated, but the belt-type electrode 10 of this embodiment is looped even after mounting The diameter of the strip-shaped electrode member 12 can be easily reduced, and the metal electrode plate 20 can be reliably in close contact with the measurement target portion. Moreover, since the strip electrode member 12 forms the metal electrode plate 20 narrower than the strip 18 and is affixed inside the end edge of the strip 18 in the width direction, the metal electrode plate 20 Face to face contact.

B. Since the strip electrode member 12 uses the metal electrode plate 20 as the contact portion with the measurement target portion, the electrical resistance is smaller compared to when the contact portion with the measurement target portion is the conductive rubber, and Biometric information (for example, bioelectrical impedance) can be accurately and accurately measured.

C. In the belt type electrode 10 of this embodiment, a stainless steel plate is used for the metal electrode plate 20. However, since the stainless steel plate is made thin, the strip electrode member 12 is easily bent and the metal electrode plate 20 is bent It is easy to touch. Therefore, the contact area between the metal electrode plate 20 and the measurement target portion can be secured, the contact failure between the metal electrode plate 20 and the measurement target portion can be suppressed, and the biological information (for example, bioimpedance) of the measurement target portion is accurate. And, it is possible to measure accurately.

D. In the belt type electrode 10 of the present embodiment, although the metal electrode plate 20 of the strip electrode member 12 is made thin, the rubber strip 18 which is a flexible elastic body is attached to the metal electrode plate 20, Plastic deformation of the metal electrode plate 20 can be suppressed.

E. After the separation jig 98 is used, for example, as shown in FIG. 5A, one locking member 102 is locked to the fixed buckle side separation jig locking surface 94 of the fixed buckle 26 so as not to be lost or the like. The other locking member 102 can be locked to the moving buckle side separation jig locking surface 48 of the moving buckle 24.

Other Embodiments
In the above embodiment, although the length of the separation jig 98 is one type, a plurality of separation jigs 98 having different lengths may be used depending on the difference in the measurement target region, the size of the measurement target person's body, etc. It can also be prepared.
Although the belt-type electrode 10 is used to measure the voltage in the above embodiment, it can also be used for other applications such as applying a voltage.

10 Belt-type electrode (bioimpedance measuring device)
12 band-shaped electrode member 14 buckle 16 fixing member
18 band 20 metal electrode plate 24 moving buckle 26 fixed buckle 72 wiring cord (output part)
78 connector (output part)
98 Separated fixture 118 Body unit (bioimpedance measuring device)
126 Current Application Electrode (Bioelectrical Impedance Measurement Device)

Claims (6)

A flexible strip electrode member disposed over the entire circumference of the measurement target site;
A buckle which is provided on the strip-shaped electrode member, holds the strip-shaped electrode member in a loop shape, and has a variable loop length;
An output unit provided on the buckle and electrically connected to the strip electrode member to output biological information of the measurement target site;
Have
The buckle is provided slidably at a longitudinally intermediate portion of the strip electrode member separately from the fixed buckle provided fixed to one end of the strip electrode member in the longitudinal direction and the fixed buckle. A movable buckle which can be engaged with the fixed buckle in a separated state;
Belt type electrode , which is configured to include . The fixed buckle is formed in a direction perpendicular to the vertical direction, and includes a pair of locking pieces each composed of a beam portion elastically deformed to be bent and a claw portion formed on the tip side of the beam portion.
The movable buckle has the hook portion insertion hole into which the pair of locking pieces can be inserted at the upper side in the vertical direction, the electrode member insertion hole in which the strip electrode member is inserted at the lower side in the vertical direction The belt type electrode according to claim 1 having a direction perpendicular to the direction . The electrode member insertion hole has a protrusion formed on the bottom surface, and the protrusion and the recess are engaged with each other, and the tilt member can be pivoted inward. Place
The belt-type electrode according to claim 2, wherein the strip-shaped electrode member is inserted into a gap between the tilting member and a ceiling surface of the electrode member insertion hole . A fixing member provided at the other end of the strip electrode member in the longitudinal direction and for embedding a magnet therein;
The movable buckle is provided with a magnet inside, and has a fixing member locking surface capable of locking the fixing member by the magnetic force of the magnet and the magnet embedded in the fixing member. Belt type electrode according to any one of the above. When attaching the pair of belt-type electrodes according to any one of claims 1 to 4, it is disposed on one of the strip electrode members disposed on one of the measurement target sites and the other of the measurement target sites. A locking portion for locking with a locking member in which a magnet is embedded at an end of a long separating jig which is set to a distance necessary for measurement between the other strip-shaped electrode members,
The said fixed part which embeds the magnet which generate | occur | produces a suction | attraction force between the said magnets embed | buried in the said locking member is provided in the said fixed buckle, The said fixed buckle is in any one of Claims 1-4. Belt type electrode. A pair of belt type electrodes according to any one of claims 1 to 5;
A pair of current application electrodes for causing a current to flow to the measurement target site in contact with the measurement target site;
An input unit for inputting body specific information;
The bioimpedance of the measurement target portion is calculated based on the value of the voltage generated between the pair of belt-type electrodes and the value of the current output from the pair of current lead electrodes, and the calculated value is calculated. An arithmetic device for determining an index related to a tissue state of a body based on a bioelectrical impedance and the body specifying information input by the input unit;
Bioimpedance measurement device having.

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