JP2007330637A - Attachment device, biosignal-measuring device and attachment condition-adjusting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attachment device which does not rotate along the periphery of an object of attachment accompanying adjustment of attachment conditions. <P>SOLUTION: A pulse wave sensor 1 comprises a cylindrical attachment part body 3 which is attached to a finger and an attachment condition-adjusting part 6 which adjusts attachment conditions of the attachment part body 3 for the finger. The attachment condition-adjusting part 6 adjusts the attachment conditions by moving the attachment part body 3 in a direction where it does not rotate along the periphery of the finger. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mounting device to be mounted on a mounting target and a mounting state adjustment method for the mounting device, and more particularly to a mounting device for mounting a biological signal measuring device for measuring a signal from a living body on the living body.

  Various devices have been proposed as mounting devices for mounting a certain object on a mounting target. In particular, various configurations of a mounting device for mounting a biological signal measuring device for measuring a biological signal on a human body have been proposed. This is because how to hold the sensor portion of the biological signal measuring device at an appropriate position on the human body is a big problem.

  For example, Patent Document 1 describes a configuration in which a pulse wave sensor for measuring a pulse wave is attached to a finger with a band.

  Patent Document 2 describes a band structure in which a biological information observation apparatus is attached to a neck portion by a band body having an elastic band portion.

  Patent Document 3 describes a biological information measuring device holder that does not impair the degree of freedom of the wrist by mounting the holder so as to cover the back of the hand.

  Patent Document 4 describes a configuration in which a pulse wave sensor is attached to a wrist with a band-like band having elasticity.

  Patent Document 5 describes a blood concentration saturation measuring device that does not give a sense of incongruity even if it is always attached to a finger by devising the arrangement of the measurement unit (light emitting element and light receiving element) and making it a ring shape.

Patent Document 6 describes a ring-type biological signal detection device that prevents the mounting portion from rotating by reducing the diameter of the mounting portion using a spring and tightening a finger.
JP 2001-70264 A (published March 21, 2001) JP2003-220041 (released on August 5, 2003) JP 2005-304563 (released November 4, 2005) JP 2005-324004 (released on November 24, 2005) JP 2002-224088 (released on August 13, 2002) JP-A-11-332840 (released December 7, 1999)

  By the way, when a certain object is attached to the attachment target and the attachment state is adjusted, it may be important to prevent the position of the object once attached from shifting.

  For example, when a pulse wave sensor for measuring a pulse wave is worn on a finger or arm and the wearing state is adjusted, it is important that the position of the pulse wave sensor does not shift. This is because if the position of the pulse wave sensor is shifted by adjusting the wearing state, there is a possibility that appropriate measurement cannot be performed.

  However, in the conventional configuration described above, there is a problem that the position of the attached object is shifted when adjusting the mounting state.

  Specifically, in the inventions described in Patent Documents 1, 2, and 4, the wearing state is adjusted by adjusting the length of a band wound around a finger or a wrist. However, in this method, when adjusting the length of the band, the entire device rotates on the outer periphery of the finger or the arm due to the force for pulling out the band, so that the position of the sensor arranged on the band is There arises a problem of deviation from the optimum measurement site.

  In the invention described in Patent Document 3, since the band-shaped finger mounting portion to which the sensor is attached is wound around the finger, there is a problem that the position of the sensor is shifted if the winding state of the finger mounting portion is adjusted.

  In the invention described in Patent Document 5, since the wearing state cannot be adjusted according to the size of the user's finger in the first place, if there is a gap between the finger and the measurement unit, the influence of disturbance light and the measurement light A problem arises in that accurate measurement cannot be performed due to disturbance, or the ring rotates and the position of the measurement site and the measurement unit shifts to hinder measurement.

  In the invention described in Patent Document 6, when the end portion of the mounting portion enters the inside of the aperture and the inner diameter is reduced, the measuring portion moves in the circumferential direction along with the change in the inner diameter. Therefore, the problem that the position of a measurement site | part and a measurement part shifts arises.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a mounting device and a biological signal measurement device that are less likely to be displaced when adjusting the mounting state. .

  In order to solve the above-described problems, the mounting device according to the present invention has an annular shape, a cylindrical shape, or a partial shape thereof, and includes a mounting unit that is mounted on a mounting target, and a mounting state of the mounting unit with respect to the mounting target. A mounting state adjusting unit that adjusts the mounting state, and the mounting state adjusting unit adjusts the mounting state by moving in a direction in which the mounting unit does not rotate along the outer periphery of the mounting target.

  A mounting state adjustment method according to the present invention is a method for adjusting a mounting state of a mounting device having an annular shape, a cylindrical shape, or a partial shape thereof to an object to be mounted, in order to solve the above-described problem. It is characterized in that the mounting state is adjusted by moving mounting state adjusting means for adjusting the mounting direction in a direction in which the mounting means does not rotate along the outer periphery of the mounting target.

  According to said structure, a mounting means can be suitably mounted | worn with the attachment object of a column shape or a cylinder shape. When the mounting state of the mounting unit is adjusted after the mounting unit is mounted, the mounting state adjusting unit moves in a direction in which the mounting unit does not rotate along the outer periphery of the mounting target.

  Therefore, it is possible to reduce the possibility that the relative position between the mounting means and the attachment target changes in accordance with the operation for adjusting the mounting state of the mounting means. Therefore, it is possible to realize a mounting apparatus that is less likely to be displaced due to rotation with respect to the mounting target even if an operation for adjusting the mounting state of the mounting means is performed.

  Moreover, it is preferable that the said mounting state adjustment means adjusts the clamping | tightening state of the said mounting means with respect to the said attachment object.

  According to said structure, a mounting state adjustment means adjusts the mounting state of a mounting means by adjusting the fastening state with respect to mounting object. Therefore, it is possible to reliably adjust the mounting state of the mounting means with respect to the mounting target.

  Moreover, it is preferable that the said mounting state adjustment means adjusts the said mounting state by moving to the direction along the longitudinal direction of the said attachment object.

  According to the above configuration, when the mounting state of the mounting unit is adjusted after the mounting unit is mounted, the mounting state adjusting unit moves in a direction along the longitudinal direction of the mounting target. For this reason, when adjusting the mounting state of the mounting means, the force for rotating the mounting means does not work on the outer periphery of the mounting target.

  Therefore, it is possible to reduce the possibility that the mounting means rotates on the outer periphery of the attachment target in accordance with the operation of adjusting the mounting state of the mounting means.

  Moreover, it is preferable that the said mounting state adjustment means adjusts the said mounting state by rotating using the axis | shaft perpendicular | vertical to the longitudinal direction of the said attachment object as a rotating shaft.

  According to the above configuration, when the mounting state of the mounting unit is adjusted after the mounting unit is mounted, the mounting state adjusting unit rotates about the axis perpendicular to the longitudinal direction of the mounting target as the rotation axis. For this reason, when adjusting the mounting state of the mounting means, the force for rotating the mounting means does not work on the outer periphery of the mounting target.

  Therefore, it is possible to reduce the possibility that the mounting means rotates on the outer periphery of the attachment target in accordance with the operation of adjusting the mounting state of the mounting means.

  The longitudinal direction is the direction in which the attachment target extends, in other words, the extension direction of the attachment target, and in other words, the direction from one end of the attachment target to the other end. It is.

  Moreover, it is preferable that the said mounting state adjustment means has a circular outer periphery formed centering on the rotating shaft.

  According to said structure, since a corner | angular part is lose | eliminated on the outer periphery of a mounting state adjustment means, the said mounting state adjustment means can be made easy to rotate. Further, by increasing the diameter of the circle forming the outer periphery, the force for rotating the mounting state adjusting means can be reduced.

  In addition, the mounting means includes first clamping means and second clamping means that face each other so that the attachment target can be clamped, and the mounting state adjusting means includes the first clamping means and the second clamping means. It is preferable to adjust the interval.

  According to said structure, a 1st clamping means is moved by moving a mounting condition adjustment means to the direction along the said longitudinal direction, or rotating a mounting condition adjustment means by making an axis | shaft perpendicular | vertical to the said longitudinal direction into a rotating shaft. And the second clamping means can be changed. Therefore, the pressure contact state between the first clamping means and the second clamping means and the attachment target can be adjusted, and the mounting state of the mounting means can be adjusted.

  Further, it is preferable that the mounting unit includes a pressing unit that presses against the attachment target, and the mounting state adjusting unit moves the pressing unit in a direction perpendicular to the longitudinal direction.

  According to the above configuration, by moving the mounting state adjusting means in the direction along the longitudinal direction, or by moving the mounting state adjusting means in the direction along the longitudinal direction, the pressure contact means is moved with respect to the longitudinal direction. Can be moved vertically. Therefore, the pressure contact state between the pressure contact means and the attachment target can be adjusted, and the mounting state of the mounting means can be adjusted.

  In addition, a biological signal measuring device in which a detecting means for detecting a biological signal is provided in the mounting means provided in the mounting device is also included in the technical scope of the present invention.

  According to said structure, even if operation which adjusts the mounting state of a mounting means is performed, the position of the detection means with respect to a mounting target can be maintained constant. Therefore, when the attachment target is a living body such as a human, it is possible to realize a biological signal measuring apparatus with a low possibility that the position of the detection means is shifted.

  In order to solve the above problems, a biological signal measuring apparatus according to the present invention is a biological signal measuring apparatus that is attached to a measurement site of a living body and measures a biological signal of the living body, and is annular, cylindrical, or those A space having a partial shape and mounted by the mounting means to be mounted on the measurement site, a mounting state adjusting unit for adjusting the mounting state of the mounting unit with respect to the measurement site, and the annular shape, the cylindrical shape, or the partial shape thereof And detecting means for detecting the biological signal, wherein the mounting state adjusting means moves the measuring means in a direction in which the mounting means does not rotate along the outer periphery of the measurement site. It is characterized by adjusting the position with respect to the part.

  According to said structure, a mounting means can be suitably mounted | worn with the attachment object of a column shape or a cylinder shape. Since the detection means faces the inside of the space formed by the mounting means, it is possible to detect a biological signal for the measurement site inserted in the space. When the mounting state of the mounting unit is adjusted after the mounting unit is mounted, the mounting state adjusting unit moves the mounting unit in a direction in which the mounting unit does not rotate along the outer periphery of the measurement unit. Adjust.

  Therefore, it is possible to reduce the possibility that the relative position of the detection means and the measurement site changes in accordance with the operation of adjusting the mounting state of the mounting means, and more appropriately position the detection means with respect to the measurement site. Can be adjusted.

  Note that the concept of adjusting the position of the detecting means is included in the concept of adjusting the mounting state of the mounting means.

  The biological signal measuring device further includes a moving unit that can move in a direction along the outer periphery of the space, the detecting unit is arranged in the moving unit, and the wearing state adjusting unit is the moving unit. It is preferable to adjust the position of the detection means with respect to the measurement site by moving.

  According to said structure, a moving means can move to the direction along the outer periphery of the space which a mounting means forms, and the detection means is distribute | arranged to this moving means. Then, the wearing state adjusting means adjusts the position of the detecting means relative to the measurement site by moving the moving means.

  Therefore, the detection means can be moved along the outer periphery of the measurement site inserted in the space formed by the mounting means, and the position of the detection means can be adjusted more appropriately.

  In addition, the moving means is a ring-shaped or part-shaped member having the center of rotation at or near the center of the space, and the mounting state adjusting means rotates the moving means to detect the detection means. It is preferable to adjust the position with respect to the measurement site.

  According to the above configuration, the moving means having an annular shape or a partial shape thereof rotates around the center of the space formed by the mounting means or the vicinity thereof. Then, the mounting state adjusting means adjusts the position of the detecting means by rotating the moving means.

  Therefore, it becomes easy to move the detection means along the outer periphery of the measurement site inserted in the space formed by the mounting means.

  As described above, the mounting device according to the present invention has an annular shape, a cylindrical shape, or a partial shape thereof, and a mounting state for mounting on the mounting target and a mounting state for adjusting a mounting state of the mounting unit on the mounting target Adjusting means, wherein the mounting state adjusting means adjusts the mounting state by moving the mounting means in a direction that does not rotate along the outer periphery of the mounting target.

  As described above, the mounting state adjusting method according to the present invention adjusts the mounting state by moving the mounting state adjusting means for adjusting the mounting state in a direction in which the mounting means does not rotate along the outer periphery of the mounting target. It is a configuration.

  Therefore, it is possible to reduce the possibility that the relative position between the mounting means and the attachment target changes in accordance with the operation for adjusting the mounting state of the mounting means. Therefore, even if an operation for adjusting the mounting state of the mounting means is performed, there is an effect that it is possible to realize a mounting device that is less likely to be displaced due to rotation with respect to the mounting target.

  As described above, the biological signal measuring apparatus according to the present invention has an annular shape, a cylindrical shape, or a partial shape thereof, and adjusts the mounting means to be mounted on the measurement site and the mounting state of the mounting unit on the measurement site. A mounting state adjusting means; and a detecting means for detecting a biological signal facing the inside of the space formed by the annular shape, the cylindrical shape, or a partial shape thereof, wherein the mounting means measures the measurement. In this configuration, the position of the detection means relative to the measurement site is adjusted by moving in a direction that does not rotate along the outer periphery of the site.

  Therefore, it is possible to reduce the possibility that the relative position between the mounting means and the measurement site changes to an unintended state in accordance with the operation for adjusting the mounting state of the mounting device, and to change the position of the detection unit with respect to the measurement site. There exists an effect that it can adjust to a more suitable thing.

[Embodiment 1]
One embodiment of the present invention will be described below with reference to FIGS. Hereinafter, as an example of the mounting device of the present invention, the pulse wave sensor 1 (mounting device, biological signal measuring device) will be described.

(Configuration of pulse wave sensor 1)
FIG. 1A is a front view of the pulse wave sensor 1, and FIG. 1B is a side view of the pulse wave sensor 1. FIG. 2 is a diagram illustrating a state in which the pulse wave sensor 1 is worn on the finger.

  As shown in FIG. 2, the pulse wave sensor 1 is a measuring device attached to a finger. As shown in FIG. 1, the pulse wave sensor 1 includes a mounting portion 2 (mounting device), a measuring portion 7 (detecting means), and a sensor body 8.

(Configuration of mounting part 2)
The mounting unit 2 is a mounting device for mounting the pulse wave sensor 1 to the finger 50. The mounting unit 2 includes a mounting unit main body 3 (mounting unit), a movable unit 4, a mechanism unit 5, and a mounting state adjusting unit 6 (mounting state adjusting unit). The mechanism unit 5 is not shown in FIG. 1 because it is disposed inside the mounting unit main body 3.

(Mounting unit body 3)
The mounting portion main body 3 has a substantially cylindrical shape (or an annular shape) having an annular opening 3 a that forms a hole 9 through which the finger 50 passes. As shown in FIG. 1, the opening 3a is provided with four movable parts 4a to 4d. More precisely, the mounting portion main body 3 is a housing that can accommodate the movable portions 4a to 4d.

(Moving part 4)
FIG. 3 is a front view showing the arrangement and moving direction of the movable part 4. In the figure, the mounting state adjustment unit 6, the measurement unit 7, and the sensor body 8 are omitted for simplification. The movable parts 4 a to 4 d are members that are pressed against the finger 50 in order to stably fix the mounting part 2 to the finger 50. These movable portions 4 a to 4 d are arranged at four locations (upper and lower left and right) so as to surround the center 9 a of the hole 9, and can move toward the center 9 a of the hole 9. By moving the movable parts 4 a to 4 d toward the center 9 a of the hole 9, the tightening state is changed by, for example, reducing the substantial diameter of the hole 9, and the mounting part 2 is stably attached to the finger 50. It will be.

  Note that the center 9a of the hole 9 does not need to be the center in an accurate sense, and may be near or inside the center of the hole 9. In other words, the movable parts 4a to 4d may be moved near the center of the hole 9 or inside thereof.

  The movable part 4a (first clamping means) and the movable part 4b (first clamping means) face each other, and are arranged on the left and right sides of the hole 9 when the sensor body 8 is the upper side and the hole 9 is viewed from the front. ing. The movable portion 4c (pressure contact means) and the movable portion 4d (pressure contact means) are opposed to each other, and are arranged above and below the hole 9 when the hole 9 is viewed from the front with the sensor body 8 as the upper side. .

  The movable part 4 a and the movable part 4 b are interlocked with the mechanism part 5, and the positions (movement distances) of the movable parts 4 a and 4 b are adjusted by the mounting state adjusting part 6 via the mechanism part 5. The movable portion 4c and the movable portion 4d are adjusted in the vertical position by the mounting state adjusting portion 6. The mechanism for adjusting the position of these movable parts 4 will be described later.

  By adjusting the positions of the movable parts 4a to 4d, the diameter of the circle 13 formed by the surface (referred to as an inscribed surface) facing the center 9a of the hole 9 of the movable parts 4a to 4d can be changed. As a result, the mounting state of the mounting unit 2 on the finger 50 can be adjusted.

(Mechanism part 5)
FIG. 4 is a front view showing a part of the configuration of the mechanism unit 5. The mechanism unit 5 is a mechanism for pushing the movable unit 4 in the center direction of the hole 9. As shown in FIG. 4, the mechanism unit 5 includes a bending portion 51 (first holding means) and a bending portion 52 (second holding means) which are a pair of arc-shaped members. The curved portions 51 and 52 are rotatably fixed to the mounting portion main body 3 with the one end portions 51a and 52a facing each other so as to bend outward. With this configuration, the width between the end 51b, which is the other end of the bending portions 51 and 52, and the end 52b is variable. This width is referred to as an adjustment width. This adjustment width changes between an adjustment width 64 and an adjustment width 65 described later.

  Guide pins 53 and 54 are provided on the other ends 51b and 52b of the curved portions 51 and 52, respectively. These guide pins 53 and 54 protrude in a direction toward the outer side of the arc formed by the curved portions 51 and 52, and are inserted into adjustment grooves 61 and 62 of the mounting state adjustment unit 6 described later. With this configuration, the adjustment width is adjusted by the wearing state adjustment unit 6.

  The movable portion 4a is linked to the operation of the bending portion 51, and the movable portion 4b is linked to the operation of the bending portion 52. If the adjustment width is reduced, the distance between the movable portion 4a and the movable portion 4b is also reduced. . That is, if the adjustment width is reduced, the movable portion 4a and the movable portion 4b move in a direction toward the center 9a of the hole 9.

(Mounting state adjusting unit 6 and its operating mechanism)
Fig.5 (a) is a top view which shows the structure of the mounting state adjustment part 6, FIG.5 (b) is the side view. As shown in FIG. 5, the wearing state adjusting unit 6 is a plate-like member, and in other words, the longitudinal direction of the finger (in other words, the direction of the arrow 11 in FIGS. 1 and 2 or the arrow 12 in FIG. 5). The position of the movable part 4 is adjusted by sliding in the direction of

  The wearing state adjusting unit 6 has adjusting grooves 61, 62, and 63 on the surface thereof. The adjustment groove 61 and the adjustment groove 62 are arranged in line symmetry with an axis parallel to the longitudinal direction of the mounting state adjustment unit 6 as a symmetry axis, and are not parallel to each other. That is, the adjustment groove 61 and the adjustment groove 62 form a square shape with an axis parallel to the longitudinal direction of the mounting state adjustment unit 6 as a central axis.

  The adjustment groove 61 and the adjustment groove 62 may be a groove hole penetrating the mounting state adjustment unit 6 or may be a groove that does not penetrate.

  A guide pin 53 of the bending portion 51 is inserted into the adjustment groove 61, and a guide pin 54 of the bending portion 52 is inserted into the adjustment groove 62. When the mounting state adjusting portion 6 is slid in the longitudinal direction, the width between the adjustment groove 61 and the adjustment groove 62 changes, so that the width between the guide pin 53 and the guide pin 54 changes. The positional relationship between the bending portion 51 and the bending portion 52 changes. And in connection with this, the distance between the movable part 4a and the movable part 4b changes.

  More specifically, the width between the adjustment groove 61 and the adjustment groove 62 corresponds to the upper end of the letter C (the starting point of writing) and the end 61a of the adjustment groove 61 and the adjustment groove 62. The end 61a of the adjustment groove 61 and the end of the adjustment groove 62 corresponding to the lower end (point of end of writing) of the letter C The width between the part 62b (adjustment width 65) is the widest. The width between the guide pin 53 and the guide pin 54 is adjusted between the adjustment width 64 and the adjustment width 65.

  The adjustment groove 61 and the adjustment groove 62 may be line-symmetric grooves that are not parallel to each other, and need not be linear grooves. That is, the adjustment groove 61 and the adjustment groove 62 may be curved grooves.

In addition, the guide pin 40 of the movable portion 4 c is inserted into the adjustment groove 63.
FIG. 6 is a diagram for explaining a mechanism for adjusting the position of the movable portion 4c. In the figure, the adjustment grooves 61 and 62 are omitted for the sake of simplicity. As shown in FIG. 6, the adjustment groove 63 is a groove whose bottom is an inclined surface 66 that is inclined along the longitudinal direction of the mounting state adjustment unit 6. That is, the depth of the adjustment groove 63 is not constant, and varies depending on the position of the adjustment groove 63.

  Specifically, the depth of the adjustment groove 63 is the shallowest at the end portion 63a located in the vicinity of the end portions 61a and 62a where the width between the adjustment groove 61 and the adjustment groove 62 is the narrowest. The width with the groove 62 is the deepest at the end 63b located in the vicinity of the ends 61b and 62b.

  The movable portion 4 c includes a guide pin 40 that can be inserted into the adjustment groove 63. When the guide pin 40 is inserted into the adjustment groove 63 and the mounting state adjustment unit 6 is slid, the movable portion 4 c moves up and down with respect to the mounting state adjustment unit 6. That is, when the groove of the adjustment groove 63 becomes shallow, the guide pin 40 is pushed out, and when the groove becomes deep, the guide pin 40 is drawn. If the mounting state adjusting unit 6 is slid by this mechanism, the depth of the adjusting groove 63 changes according to the movement amount, and the movable unit 4c can be moved up and down. And the press-contact state with respect to the finger | toe 50 of the movable part 4c is adjusted by this up-and-down movement.

  The vertical movement of the movable part 4d is controlled by a cam (not shown) provided in the vicinity of the movable part 4d. This cam rotates in conjunction with the operation of the bending portion 51, and the movable portion 4d moves up and down in conjunction with this rotational movement.

  Note that it is not always necessary to slide the wearing state adjusting unit 6 in parallel with the longitudinal direction of the finger 50, and the sliding direction of the wearing state adjusting unit 6 is inclined about several degrees with respect to the longitudinal direction of the finger 50. There is no problem. This is because the position can be held by friction between the movable portion 4 and the finger 50.

(Configuration of measuring unit 7)
The measurement unit 7 is an optical transmission sensor that includes a light emitting element 7a (for example, a light emitting diode (LED)) and a light receiving element 7b (for example, a photodiode (PD)). As shown in FIG. 1, the light emitting element 7a and the light receiving element 7b are arranged on the inscribed surface of the movable portion 4d. When the movable portion 4d moves toward the center 9a of the hole 9, the light emitting element 7a and the light receiving element 7b are in close contact with the surface of the finger 50 inserted into the hole 9.

  FIG. 7 is a diagram for explaining a measurement method in the measurement unit 7. When the detection light is irradiated from the light emitting element 7a toward the center 9a of the hole 9, as shown in FIG. 7, the artery of the finger 50 in which a part of the detection light is inserted into the hole 9 (inherent palm side finger artery) At 50a, it is absorbed by hemoglobin in the blood flowing through the artery, the remaining detection light is scattered by the artery, and a part of it is incident on the light receiving element 7b.

  At this time, since the amount of hemoglobin in the artery changes in a wave due to blood pulsation, the amount of detection light absorbed in the hemoglobin also changes in a wave. As a result, the amount of received light that is scattered by the artery and detected by the light receiving element 7b changes. The light receiving element 7b outputs the change in the amount of received light to the sensor body 8 as pulse wave information (for example, a current signal).

  FIG. 7 shows a configuration in which measurement is performed on one of the two arteries 50a, but a configuration in which measurement is performed on both arteries 50a may be employed.

  Moreover, the number of the light emitting elements 7a and the light receiving elements 7b included in the measuring unit 7 is not limited to the above-described one. For example, the measurement unit 7 may be composed of one light emitting element 7a and two light receiving elements 7b. In the case of this configuration, the light emitted from the light emitting element 7a located at the center may be received by the light receiving element 7b with the same path length. In addition, the positional relationship between the elements may be adjusted according to the number of light emitting elements 7a and light receiving elements 7b.

(Configuration of sensor body 8)
The sensor body 8 receives the pulse wave information output from the light receiving element 7b and outputs the measurement result. FIG. 8 is a functional block diagram showing the configuration of the sensor body 8. As shown in the figure, the sensor body 8 includes a microcomputer 83 including a drive unit 81, a detection circuit 82, a control unit 84, and a signal processing unit 85, an input unit 86, and a display unit 87.

  The drive unit 81 irradiates the detection light from the light emitting element 7a according to the command of the control unit 84.

  The detection circuit 82 receives a current signal that is pulse wave information output from the light receiving element 7b, converts the current signal into an analog voltage signal, and outputs the analog voltage signal to the signal processing unit 85.

  The control unit 84 controls each unit of the pulse wave sensor 1, and particularly controls light emission of the light emitting element 7a via the drive unit 81 at a predetermined timing.

  The signal processing unit 85 converts the pulse wave information output from the light receiving element 7b and converted into an analog voltage signal by the detection circuit 82 into digital data by the built-in ADC (AD converter), and performs an operation thereby. Perform wave detection. The signal processing unit 85 outputs the detection result to the display unit 87.

  The input unit 86 is for performing operations such as turning on / off the pulse wave sensor 1 and setting various operation modes, and transmits an instruction (operation content) from the user to the control unit 84.

  FIGS. 9A and 9B show the appearance of the sensor body 8, where FIG. 9A is a plan view, FIG. 9B is a side view, and FIG. 9C is a plan view showing a configuration including a cable lead-out portion 88. (D) is a top view which shows a structure provided with the radio | wireless communication part 90. FIG. In the figure, the mounting state adjustment unit 6 is omitted for the sake of simplicity. As shown in FIGS. 9A and 9B, the input unit 86 is provided on the surface of the sensor body 8, and when the finger 50 is passed through the hole 9, the side surface on the side where the finger 50 is inserted is provided. And on the opposite side surface. The position where the input unit 86 is provided is not limited to the above.

  The display unit 87 displays measurement results and the like, and is provided on the surface of the sensor body 8 as shown in FIG.

  As shown in FIG. 9C, without providing the display unit 87, a cable lead-out unit 88 is provided to collect the wiring from the measurement unit 7 and draw out the cable 89, and the measurement result is transmitted to an external device by the cable 89. It may be output.

  9D, the wireless communication unit 90 may be provided without providing the display unit 87, and the measurement result may be output to an external device by the wireless communication unit 90. With this configuration, a person (for example, a doctor) who is away from a wearer (for example, a patient undergoing home treatment) wearing the pulse wave sensor 1 can acquire the measurement result of the wearer.

(Mounting method of pulse wave sensor 1)
Next, a method for attaching the pulse wave sensor 1 to the finger 50 will be described with reference to FIG. FIG. 10 is a diagram for explaining a mounting method of the pulse wave sensor 1.

  First, the mounting state adjusting unit 6 is slid to adjust the size of the hole 9 to the maximum. In this state, as shown in FIG. 10, the finger 50 is passed through the mounting portion 2, and the measuring portion 7 is disposed so as to contact the artery of the finger.

  Next, the mounting state adjusting unit 6 is slid in the reverse direction, the movable unit 4 is moved in the center direction of the hole 9, and the size of the circle 13 is reduced, whereby the tightening condition (pressed state and contact state) is adjusted. The pulse wave sensor 1 is attached to the measurement site of the finger while adjusting.

  In this way, the pulse wave sensor 1 can be fixed so as not to be displaced by closely contacting the inscribed surface of the movable portion 4 and the surface of the finger 50 so that no gap is generated.

  In addition, when removing the pulse wave sensor 1, it can remove easily by sliding the mounting state adjustment part 6 again and enlarging the hole 9. FIG.

(Operational effect of pulse wave sensor 1)
Next, the effect of the pulse wave sensor 1 will be described with reference to FIG. FIG. 11 is a diagram illustrating the direction of the force generated when the mounting state adjustment unit 6 is slid.

  When the mounting state is adjusted as in the conventional mounting device, the mounting device rotates in the direction along the outer periphery of the finger 50 (the direction of the arrow 15 or 16) as shown in FIG. There arises a problem that the deviation from the measurement site.

  In such rotation of the mounting device, a force for adjusting the mounting state is applied to the outer periphery of the mounting device in the direction perpendicular to the longitudinal direction of the finger 50 and in the tangential direction of the outer periphery (the direction of the arrow 17). Caused by.

  As described above, in the pulse wave sensor 1, the mounting state of the mounting unit 2 is adjusted by sliding the mounting state adjusting unit 6. At this time, the wearing state adjustment unit 6 is slid in a direction parallel to the longitudinal direction of the finger 50 (in the direction of the arrow 18). In other words, the wearing state adjustment unit 6 is slid in a direction perpendicular to the surface 19 perpendicular to the longitudinal direction of the finger 50. Therefore, since the force in the direction of rotating the pulse wave sensor 1 does not occur, the possibility that the pulse wave sensor 1 rotates in the direction along the outer periphery of the finger 50 can be reduced. Therefore, the mounting state can be adjusted without shifting the position of the measurement unit 7 from the initial setting position.

  Therefore, it is possible to reduce the possibility of adversely affecting the measurement and the possibility of making the measurement impossible by shifting the position of the measurement unit 7.

  The longitudinal direction of the finger means a direction from the root of the finger toward the tip of the finger or the opposite direction when the finger is stretched.

  In addition, the mechanism that moves the movable part 4 has an advantage that the moving position can be reproduced, so that the elastic material is used as a belt for wearing, and the measurement is based on the non-uniformity of the elastic rate of the material. The positional deviation of the part 7 can be reduced.

  In order to improve the reproducibility of the movement position, for example, it is preferable that a mark such as a scale is provided on the mounting state adjustment unit 6. According to this configuration, the position of the mounting state adjusting unit 6 with respect to the mounting unit main body 3 can be determined with reference to the mark, and as a result, the mounting state can be quantitatively adjusted and the reproducibility of the mounting state can be improved. Can be increased.

  When the wearing state adjustment unit 6 is slid in the longitudinal direction of the finger 50, the pulse wave sensor 1 may be displaced in the longitudinal direction of the finger 50. However, if the object to be measured extends along the longitudinal direction of the finger 50 (for example, the unique palmar finger artery), even if the pulse wave sensor 1 is moved by the operation of the wearing state adjustment unit 6, the measurement is performed. Is less likely to have a major impact on

(Example of change)
In the above configuration, four movable parts 4 are provided, but the number of movable parts 4 may be two, three, or five or more.

  The measurement unit 7 may be provided in the movable unit 4 or may be fixed to the opening 3 a of the mounting unit main body 3. That is, the measurement unit 7 may or may not be moved.

  Alternatively, the mounting state adjustment unit 6 may be provided with a lock mechanism, and the mounting state adjustment unit 6 may be locked to fix the adjustment position. For example, a plate may be provided on the upper part of the mounting state adjustment unit 6, a pad may be disposed there, and the position of the mounting state adjustment unit 6 may be fixed by friction with the mounting state adjustment unit 6. Moreover, it is good also as a structure by which the mounting state adjustment part 6 is not completely locked, but a lock | rock is cancelled | released by the change of the finger shape by the bending of a finger. Any locking mechanism may be used.

  With the above configuration, the adjustment is loosened, the position of the measuring unit 7 in the outer circumferential direction of the finger 50 due to the large circle 13 formed by the movable unit 4 is prevented, and the pulse wave sensor 1 is 50 can be prevented from falling off.

  Further, the mounting portion main body 3 may have a cylindrical shape as described above, or may have a cylindrical shape having a C-shaped shape with a part of a circular arc missing as a cross section, or a cylinder having a polygonal cross section. It may be a shape. In other words, the mounting portion main body 3 may have a cylindrical shape or a part thereof.

  Moreover, the mechanism for moving the movable part 4 is not limited to the above. FIG. 12 is a diagram showing a mechanism for moving the movable part 4a to the left and right. FIG. 13 is a diagram showing a mechanism for moving the movable portion 4c up and down. FIGS. 14A and 14B are views showing a knob 93 that rotates the helical gear 91, in which FIG. 14A is a side view and FIG. 14B is a front view.

  As shown in FIG. 12 (a), the guide pin 92 of the movable part 4a (or the movable part 4b) is disposed in the spiral groove of the gear 91 so as to fit into the gear 91, as shown in FIG. The movable portion 4 a may be moved in the longitudinal direction of the gear 91 by rotating the gear 91.

  As shown in FIG. 13, the movable portion 4c (or the movable portion 4d) may be moved up and down by directing the gear 91 in the center direction of the hole 9 (the direction of the arrow 94).

  As a mechanism for rotating the gear 91, as shown in FIG. 14, a knob 93 (mounting state adjusting means) connected to the gear 91 may be provided in the mounting portion 2. By rotating the knob 93, the movable part 4 can be moved left and right or up and down.

  Also in the above configuration, the mounting state of the mounting unit 2 can be adjusted so that a force for rotating the mounting unit 2 on the outer periphery of the finger 50 is not generated. The force generated by rotating the knob 93 is substantially the same as the force generated when the mounting state adjusting unit 20 of the pulse wave sensor 10 described later is rotated.

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIGS. In addition, about the member similar to Embodiment 1, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 15 shows the external appearance of the pulse wave sensor 10 (mounting device, biological signal measuring device) of this embodiment, (a) is a perspective view, and (b) is a plan view. The pulse wave sensor 10 includes movable parts 4a to 4d, a measurement part 7, and a sensor body 8 as in the pulse wave sensor 1, but these members are omitted in FIG. Yes. As shown in FIGS. 15A and 15B, unlike the pulse wave sensor 1, the pulse wave sensor 10 includes an attachment state adjustment unit 20 (attachment state adjustment means). The mounting state adjustment unit 20 has a knob shape, and the mounting state of the mounting unit 2 can be adjusted by turning the knob.

  FIGS. 16A and 16B show the shape of the mounting state adjustment unit 20, where FIG. 16A is a bottom view, FIG. 16B is a side view, and FIG. 16C is a front view. As shown in FIG. 5A, an adjustment groove 21, an adjustment groove 22, and an adjustment groove 26 are formed on the bottom surface of the mounting state adjustment unit 20. The adjustment groove 21 and the adjustment groove 22 are substantially semicircular grooves facing each other, and are formed point-symmetrically with the center of rotation 23 of the mounting state adjustment unit 20 as the center of symmetry. In other words, the adjustment groove 21 and the adjustment groove 22 are part of a spiral shape having the center 23 as the center of the vortex.

  A guide pin 53 of the bending portion 51 is inserted into the adjustment groove 21, and a guide pin 54 of the bending portion 52 is inserted into the adjustment groove 22. When the mounting state adjustment unit 20 is rotated about the center 23 as a rotation axis, the adjustment width between the guide pin 53 and the guide pin 54 changes as the widths of the adjustment groove 21 and the adjustment groove 22 change.

  The width of the adjustment groove 21 and the adjustment groove 22 is the narrowest adjustment width 24, which is the width between the end 21 a and the end 22 a, which is the end of the adjustment groove closer to the center 23. The adjustment width 25, which is the width between the end portion 21b and the end portion 22b, which is the end portion of the adjustment groove, which is the farthest, is the widest.

  That is, the width of the adjustment groove 21 and the adjustment groove 22 increases or decreases between the adjustment width 24 and the adjustment width 25 depending on the rotation angle of the mounting state adjustment unit 20. Therefore, the adjustment width of the bending parts 51 and 52 can be uniquely determined according to the rotation angle of the mounting state adjustment part 20, and the distance between the movable part 4a and the movable part 4b can be adjusted.

  The adjustment groove 26 is a circular groove with the center 23 as the center. The adjustment groove 26 has a different depth at each position of the groove, and is a groove whose bottom is an inclined surface that is inclined along the circumferential direction.

  A guide pin 40 of the movable portion 4 c is inserted into the adjustment groove 26, and the guide pin 40 contacts the bottom of the adjustment groove 26. When the mounting state adjustment unit 20 is rotated in this state, the depth of the adjustment groove 26 changes. When the adjustment groove 26 becomes shallow, the guide pin 40 is pushed out, and when the adjustment groove 26 becomes deep, the guide pin 40 is drawn. . That is, if the mounting state adjusting unit 6 is rotated without rotating the movable part 4c, the depth of the adjustment groove 26 changes according to the rotation angle, and the movable part 4c can be moved up and down.

(Operational effect of pulse wave sensor 10)
Next, the effect of the pulse wave sensor 10 will be described with reference to FIG. FIG. 17 is a diagram illustrating the direction of the force generated when the mounting state adjustment unit 20 is rotated.

  As described above, when the force for adjusting the wearing state is applied to the outer periphery of the mounting device in the direction perpendicular to the longitudinal direction of the finger and in the tangential direction of the outer periphery (the direction of the arrow 17), Likely to rotate around.

  On the other hand, in the pulse wave sensor 10, the mounting state of the mounting unit 2 is adjusted by rotating the mounting state adjusting unit 20. Since the rotation of the wearing state adjusting unit 20 is performed using a straight line (a straight line including the arrow 27) passing through the center 9a of the hole 9 as a rotation axis, force in a direction for rotating the pulse wave sensor 10 around the finger works. Absent.

  Therefore, it is possible to reduce the possibility that the pulse wave sensor 1 rotates in the direction along the outer periphery of the finger when adjusting the wearing state, and the wearing state can be adjusted without shifting the position of the measurement unit 7 from the initial setting position.

(Example of change)
FIG. 18 is a perspective view showing a modified example of the mounting state adjustment unit 20. FIGS. 19A and 19B show another modified example of the mounting state adjusting unit 20, in which FIG. 19A is a perspective view and FIG. 19B is a plan view. FIGS. 20A and 20B show still another modified example of the mounting state adjusting unit 20, in which FIG. 20A is a perspective view and FIG. 20B is a plan view.

  The shape of the mounting state adjusting unit 20 is not limited to the knob shape, and as shown in FIGS. 18 and 19, the mounting state adjusting unit 20a (mounting state adjusting means) or the mounting state adjusting unit 20b is a flat cylindrical shape. (Wearing state adjusting means) may be used. By making the mounting state adjustment part cylindrical, the distance from the outer peripheral part of the mounting state adjustment part to the central axis becomes constant, so if a uniform force is applied to the outer peripheral part, the displacement due to rotation at the central axis part There is an effect that disappears.

  Furthermore, the mounting state adjustment unit 20b has a larger diameter than the mounting state adjustment unit 20a. Therefore, since the mounting state adjusting unit 20b is configured to be operable at the outer peripheral portion that can have a large diameter, a large moment can be easily obtained, and the mounting state can be adjusted with a small operating force. Further, since the operation amount is large, fine adjustment is facilitated.

  Further, as shown in FIG. 19, the mounting state adjustment unit 20 b may be integrated with the sensor main body 8 or may not be integrated with the sensor main body 8 as shown in FIG. 20. However, it is preferable to integrate the mounting state adjusting unit 20b with the sensor body 8. With this configuration, the thickness of the pulse wave sensor 10 can be reduced, the distance from the center of the hole 9 to the mounting state adjustment unit 20b can be reduced, and the possibility of the position of the measurement unit 7 being shifted can be further reduced. it can. Moreover, since it is the structure which can take the largest diameter in the mounting part 2 and it can be operated in the outer periphery of the mounting part 2, the space inside and the lower side of the mounting state adjustment part 20b can be used effectively.

[Embodiment 3]
The following will describe another embodiment of the present invention with reference to FIG. In addition, about the member similar to the above-mentioned embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 21 is a cross-sectional view showing a configuration of the pulse wave sensor 30 (a mounting device, a biological signal measuring device) of the present embodiment, and FIG. 21A shows the maximum distance between the guide pin 33b and the guide pin 34b. It is sectional drawing which shows the state which has been, (b) is sectional drawing which shows the state where the distance between the guide pin 33b and the guide pin 34b is the minimum. As shown in the figure, unlike the pulse wave sensor 1 and the pulse wave sensor 10, the pulse wave sensor 30 includes movable parts 31, 32, 35, and 36 and curved parts 33 and 34. That is, the arrangement of the movable part and the mechanism for adjusting the position of the movable part are different from the above-described embodiment.

(Driving mechanism for movable parts 31 and 32)
The movable portion 31 (first clamping means) is integrally formed with the bending portion 33 (first clamping means), and one end portion 33a of the bending portion 33 is fixed to the mounting portion main body 3 so as to be rotatable. . A guide pin 33 b is disposed at the other end of the bending portion 33, and this guide pin 33 b is inserted into the adjustment groove 21 of the mounting state adjustment unit 20.

  Further, a movable portion 32 (second clamping means) and a bending portion 34 (second clamping means) are arranged on the side facing the movable portion 31 and the bending portion 33 with the hole 9 interposed therebetween. The movable portion 32 is integrally formed with the bending portion 34, and one end 34 a of the bending portion 34 is fixed to the mounting portion main body 3 so as to be rotatable. A guide pin 34 b is disposed at the other end of the bending portion 34, and the guide pin 34 b is inserted into the adjustment groove 22 of the mounting state adjustment unit 20.

  As described above, the width between the guide pin 33b and the guide pin 34b can be changed by rotating the mounting state adjusting unit 20, and if the width between the guide pin 33b and the guide pin 34b becomes narrower. The movable part 31 and the movable part 32 are pushed out toward the center of the hole 9, and the distance between the movable part 31 and the movable part 32 is reduced. That is, the movable part 31 and the movable part 32 move in the direction in which the finger is tightened.

(Driving mechanism for movable parts 35 and 36)
The movable parts 35 and 36 (pressure contact means) are located below the ends 33a and 34a of the bending parts 33 and 34 (on the side away from the mounting state adjustment part 20), with the central axis of the pulse wave sensor 30 as the axis of symmetry. It is arranged so as to be line symmetric. These movable portions 35 and 36 are subjected to a load acting in the outer peripheral direction of the mounting portion 2 by a spring 39. That is, the movable portions 35 and 36 are applied by the spring 39 in the direction away from the center 9 a of the hole 9 by the spring 39.

  Elliptical cams 37 and 38 are disposed at positions that are in contact with the movable portions 35 and 36 and are further away from the center 9a than the movable portions 35 and 36, respectively. If the long axes of the cams 37 and 38 are directed toward the center 9a, the movable portions 35 and 36 are pushed out toward the center 9a. Otherwise, the movable portions 35 and 36 are pulled away from the center 9a. It is.

  The cams 37 and 38 are rotatably arranged on the mounting portion main body 3, and the rotation of the cams 37 and 38 is interlocked with the rotation of the bending portions 33 and 34.

  Specifically, the bending portion 33 is connected to the cam 37 via the connecting member 41, and the cam 37 rotates as the bending portion 33 rotates. The connecting member 41 can be displaced along a guide 43 arranged on the mounting portion main body 3.

  Similarly, the bending portion 34 is connected to the cam 38 via the connecting member 42, and the cam 38 rotates as the bending portion 34 rotates.

  The drive mechanism of the movable parts 35 and 36 is summarized as follows. That is, the movable parts 35 and 36 are always pressed against the cams 37 and 38 by the spring 39. At this time, the long axes of the cams 37 and 38 are not oriented in the direction toward the center 9a. If the width between the guide pin 33b and the guide pin 34b included in the bending portions 33 and 34 is reduced by the rotation of the mounting state adjusting portion 20, the cams 37 and 34 are interlocked with the rotation of the bending portions 33 and 34. 38 rotates, and the long axis of the cams 37 and 38 faces the direction of the center 9a. As a result, the movable parts 35 and 36 are pushed out in the direction toward the center 9a.

  A light emitting element 7 a is disposed on the inscribed surface of the movable portion 35, and a light receiving element 7 b is disposed on the inscribed surface of the movable portion 36. Therefore, when the movable portions 35 and 36 are pushed out toward the center 9 a of the hole 9, the light emitting element 7 a and the light receiving element 7 b are pressed against the surface of the finger inserted into the hole 9. Note that the light emitting element 7a and the light receiving element 7b may be provided on either side of the movable part 35 or the movable part 36.

  The light emitting direction of the light emitting element 7a and the light receiving direction of the light receiving element 7b are respectively directed to the center 9a of the hole 9, and the light emitting direction and the light receiving direction intersect with each other at an angle θ.

(Effect of pulse wave sensor 30)
As described above, in the pulse wave sensor 30, when adjusting the mounting state of the mounting unit 2, the light emitting element 7 a and the light receiving element 7 b respectively provided in the movable unit 35 or the movable unit 36 have the above angle θ. Is maintained, and moves in a direction toward the center 9a of the hole 9 or away from the center 9a.

  That is, in addition to the relative positional relationship between the measurement unit 7 (light emitting element 7a and light receiving element 7b) and the measurement target (finger 50), the relative positional relationship (angle) between the light emitting element 7a and the light receiving element 7b is set. The wearing state can be adjusted while maintaining a physically ideal state. Therefore, more accurate measurement is possible.

  In the above-described configuration, the pulse wave sensor 30 includes the mounting state adjustment unit 20, but may include the mounting state adjustment unit 6, or may include the mounting state adjustment unit 20a or 20b.

  In the above-described configuration, the mounting state of the pulse wave sensor is adjusted by adjusting the distance between the movable parts, but the mounting state is changed by changing the material of the contact portion between the finger to be mounted and the mounting part 2. It is good also as a structure which adjusts.

[Embodiment 4]
The following will describe another embodiment of the present invention with reference to FIG. In addition, about the member similar to the above-mentioned embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  FIG. 22 is a perspective view showing the configuration of the pulse wave sensor 100 of the present embodiment. As shown in FIG. 22, the pulse wave sensor 100 (biological signal measurement device) includes an attachment state adjustment unit 101 (attachment state adjustment unit), a measurement unit moving ring 102 (movement unit), and a rotational force transmission mechanism 103. Yes. In the figure, the sensor body 8 is omitted for the sake of simplicity.

  The mounting state adjustment unit 101 is provided in the upper part of the mounting unit main body 3 and has a flat cylindrical shape. Similar to the wearing state adjusting unit 20, the wearing state adjusting unit 101 rotates using a straight line passing through the center 9 a of the hole 9 and perpendicular to the longitudinal direction of the finger inserted into the hole 9 as a rotation axis. In other words, the wearing state adjusting unit 101 adjusts the position of the measuring unit 7 relative to the measurement site (artery 50a) of the finger by moving the mounting unit 2 in a direction that does not rotate along the outer periphery of the finger. Therefore, even if the wearing state adjustment unit 101 is rotated, the force for rotating the pulse wave sensor 100 in the direction along the outer periphery of the finger does not work. The rotational force of the mounting state adjusting unit 101 is converted into the rotational force of the measuring unit moving ring 102 via the rotational force transmission mechanism 103.

  The rotational force transmission mechanism 103 includes a plurality of gears or a combination of a plurality of gears and a threaded lot. One of the gears constituting the rotational force transmission mechanism 103 is in contact with the mounting state adjusting unit 101, and the other one of the gears constituting the rotational force transmission mechanism 103 is in contact with the measuring unit moving ring 102. Therefore, the rotational force of the mounting state adjustment unit 101 can be transmitted to the measurement unit moving ring 102 via the plurality of gears (or lots) of the rotational force transmission mechanism 103.

  The rotational force transmission mechanism 103 only needs to convert the rotational force of the mounting state adjusting unit 101 into the rotational force of the measuring unit moving ring 102, and the configuration is not limited to that illustrated in FIG.

  The measuring unit moving ring 102 is a ring having substantially the same diameter as the opening 3 a of the mounting unit main body 3, and is movable in a direction along the outer periphery (opening 3 a) of the hole 9. More specifically, the measuring unit moving ring 102 rotates about the center 9a (or the vicinity thereof) of the hole 9 as the rotation center. As described above, the rotational force of the measuring unit moving ring 102 is supplied by rotating the mounting state adjusting unit 101.

  Note that the measuring unit moving ring 102 does not have to be a complete ring shape, and may be any ring shape or a partial shape thereof (a part of an arc).

  A measuring unit 7 including a light emitting element 7a and a light receiving element 7b is disposed on the inscribed surface of the measuring unit moving ring 102. That is, the measurement unit 7 faces the inside of the hole 9. In FIG. 22, the measurement unit 7 is represented by one rectangle in order to simplify the drawing. As the measurement unit moving ring 102 rotates, the measurement unit 7 moves along the outer periphery of the finger inserted into the hole 9.

  That is, by rotating the mounting state adjustment unit 101, the measurement unit 7 at an inappropriate position (position 7d in FIG. 22) can be moved to an appropriate position (position 7c in FIG. 22).

  As described above, in the pulse wave sensor 100, the wearing state adjusting unit 101 adjusts the position of the measuring unit 7 with respect to the finger by rotating (or moving) the measuring unit moving ring 102.

  Therefore, it is possible to reduce the possibility that the relative position between the measurement unit 7 and the measurement part of the finger changes in accordance with the operation for adjusting the mounting state of the pulse wave sensor 100, and to the measurement part 7 with respect to the measurement part. The position can be adjusted to a more appropriate one.

  Note that the wearing state adjustment unit 101 may be configured to slide in the direction along the longitudinal direction of the finger 50, similarly to the wearing state adjustment unit 6. In this case, the measurement unit moving ring 102 may be rotated by the moving force accompanying the slide of the mounting state adjusting unit 101.

  Further, the measuring unit moving ring 102 is configured by a deformable member such as a partially arc-shaped wire, and a selection gear (not shown) is provided to be used in combination with the configuration described in the first to third embodiments. It goes without saying that it is possible. In this case, the mounting state including the tightening degree of the measurement unit of the pulse wave sensor 100 and the relative position with respect to the measurement site can be adjusted without causing an unintended change in the direction along the outer periphery of the attachment target.

(Example of change)
In the above-described configuration, an optical sensor is shown as the measurement unit 7. However, the measurement unit 7 may be, for example, an electrode for measuring electrocardiogram, myoelectricity, or skin resistance, an ultrasonic sensor, temperature or moisture. Various types of sensors for measuring biological information, such as a sensor to detect and a sensor to detect sound such as arterial sound, may be used.

  The above configuration is effective when the measurement environment changes depending on the position of the measurement target, but the measurement target is along a certain direction (the direction of the finger) like the intrinsic artery in the above embodiment. In some cases, it is particularly effective.

  In the above configuration, the measurement target of the pulse wave sensor is a finger, but the measurement target of the pulse wave sensor may be a wrist, an arm, a leg, a neck, or a torso. The measurement object is not limited to the human body, and may be a living organism other than human.

  Moreover, the mounting device of the present invention is not limited to a device for mounting a biological signal measuring device, but may be a device for mounting a measuring device other than the biological signal measuring device to a measurement target. Further, the mounting device may be for fixing the position of the needle to be inserted into the skin or for fixing a camera for imaging a certain location. It may be attached. In view of the configuration of the present invention, the attachment target is preferably a cylindrical shape or a columnar shape.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The present invention can also be expressed as follows.

  The biological signal measuring device of the present invention is a biological signal measuring device that is attached to a human body and measures a biological signal, and is attached to an limb or a finger in an annular shape or an arc shape; A detection unit that detects a biological signal in close contact with a predetermined location; and a mounting state adjustment unit that adjusts a mounting state of the mounting unit. The mounting state adjustment unit has a direction of a force for operating the mounting unit. The direction is substantially perpendicular to the plane including the circumference of the mounting portion.

  The biological signal measuring device of the present invention is a biological signal measuring device that is attached to a human body and measures a biological signal, and is attached to an limb or a finger in an annular shape or an arc shape; A detection unit that detects a biological signal in close contact with a predetermined location; and a mounting state adjustment unit that adjusts a mounting state of the mounting unit, wherein the mounting state adjustment unit is on a plane including a circumference of the mounting unit. The rotation direction is a substantially parallel normal direction.

  In the biological signal measuring apparatus, it is preferable that the wearing state adjusting unit has a circular shape around the rotation axis.

  In the biological signal measuring apparatus, when a main body unit for measuring or displaying a biological signal is provided, it is preferable that the wearing state adjusting unit can be adjusted by operating the outer periphery of the main body unit.

  Since the mounting state can be adjusted without shifting the mounting position, it can be used as a device for mounting a device in which it is important to maintain the mounting position, for example, a biological signal measuring device.

The structure of the pulse wave sensor of one Embodiment is shown, (a) is a front view, (b) is a side view. It is a figure which shows the state which mounted | wore the finger | toe with the pulse wave sensor of one Embodiment. It is a front view which shows arrangement | positioning and the moving direction of a movable part with which the pulse wave sensor of one Embodiment is provided. It is a front view which shows the structure of the mechanism part with which the pulse wave sensor of one Embodiment is provided. The structure of the mounting state adjustment part with which the pulse wave sensor of one Embodiment is provided is shown, (a) is a top view, (b) is a side view. It is a figure for demonstrating the mechanism of the position adjustment of the said movable part. It is a figure for demonstrating the measuring method in the measurement part with which the pulse wave sensor of one Embodiment is provided. It is a functional block diagram which shows the structure of the sensor main body with which the pulse wave sensor of one Embodiment is provided. The external appearance of the said sensor main body is shown, (a) is a top view which shows the structure provided with a display part, (b) is the side view, (c) is a plane which shows the structure provided with a cable extraction part. It is a figure and (d) is a top view which shows a structure provided with a radio | wireless communication part. It is a figure for demonstrating the mounting method of the pulse wave sensor of one Embodiment. It is a figure which shows the direction of the force produced when sliding the said mounting state adjustment part. It is a figure which shows the mechanism which moves the said movable part to right and left. It is a figure which shows the mechanism which moves the said movable part up and down. The knob which rotates a helical gear is shown, (a) is a side view, (b) is a front view. The external appearance of the pulse wave sensor of another embodiment is shown, (a) is a perspective view, (b) is a top view. The shape of the mounting state adjustment part with which the pulse wave sensor of another embodiment is provided is shown, (a) is a bottom view, (b) is a side view, (c) is a front view. It is a figure which shows the direction of the force produced when rotating the said mounting state adjustment part. It is a perspective view which shows the modification of the said mounting state adjustment part. The other modified example of the said mounting state adjustment part is shown, (a) is a perspective view, (b) is a top view. FIG. 8 shows still another modified example of the mounting state adjusting unit, where (a) is a perspective view and (b) is a plan view. The structure of the pulse wave sensor of another embodiment is shown, (a) is a sectional view showing the state where the distance between guide pins is the maximum, (b) is between guide pins. It is sectional drawing which shows the state where distance is the minimum. It is a perspective view which shows the structure of the pulse wave sensor of another embodiment.

Explanation of symbols

1 Pulse wave sensor (biological signal measuring device)
2 Wearing part (wearing device)
3 Mounting body (mounting means)
4a Movable part (first clamping means)
4b Movable part (second clamping means)
4c Movable part (pressure contact means)
4d Movable part (pressure contact means)
6 Wearing state adjusting unit (wearing wearing state adjusting means)
7 Measuring part (detection means)
7a Light emitting element (detection means)
7b Light receiving element (detection means)
10 Pulse wave sensor (Biological signal measuring device)
20 Wearing state adjusting unit (wearing state adjusting means)
20a Wearing state adjusting unit (wearing state adjusting means)
20b Wearing state adjusting unit (wearing state adjusting means)
30 Pulse wave sensor (biological signal measuring device)
31 Movable part (first clamping means)
32 Movable part (second clamping means)
33 curved portion (first clamping means)
34 Bending part (second clamping means)
35 Movable part (pressure contact means)
36 Movable part (pressure contact means)
51 curved portion (first clamping means)
52 curved portion (second clamping means)
93 Knob (Wearing state adjustment means)
100 Pulse wave sensor (Biological signal measuring device)
101 Wearing state adjusting unit (wearing state adjusting means)
102 Measuring unit moving ring (moving means)

Claims (12)

An attachment means having an annular shape, a cylindrical shape or a partial shape thereof, and attached to an attachment target;
A mounting state adjusting unit that adjusts a mounting state of the mounting unit with respect to the mounting target;
The mounting apparatus, wherein the mounting state adjusting unit adjusts the mounting state by moving the mounting unit in a direction in which the mounting unit does not rotate along the outer periphery of the mounting target.   The mounting apparatus according to claim 1, wherein the mounting state adjusting unit adjusts a tightening state of the mounting unit with respect to the mounting target.   The mounting apparatus according to claim 2, wherein the mounting state adjustment unit adjusts the mounting state by moving in a direction along a longitudinal direction of the mounting target.   The mounting apparatus according to claim 2, wherein the mounting state adjusting unit adjusts the mounting state by rotating about an axis perpendicular to a longitudinal direction of the mounting target as a rotation axis.   The mounting apparatus according to claim 4, wherein the mounting state adjusting means has a circular outer periphery formed around a rotation axis thereof. The mounting means includes a first clamping means and a second clamping means that face each other so as to clamp the attachment target,
The mounting apparatus according to claim 3 or 4, wherein the mounting state adjusting unit adjusts a distance between the first clamping unit and the second clamping unit. The mounting means includes pressure contact means that press-contacts the attachment target,
The mounting apparatus according to claim 3 or 4, wherein the mounting state adjusting means moves the pressure contact means in a direction perpendicular to the longitudinal direction.   A biological signal measuring apparatus, wherein the mounting means provided in the mounting apparatus according to claim 1 is provided with a detecting means for detecting a biological signal. A biological signal measuring device that is attached to a measurement site of a biological body and measures a biological signal of the biological body,
An attachment means for attaching to the measurement site, having an annular shape, a cylindrical shape or a partial shape thereof,
A mounting state adjusting means for adjusting a mounting state of the mounting means with respect to the measurement site;
A detection means for detecting the biological signal, facing the inside of the space formed by the annular shape, the cylindrical shape or the partial shape thereof,
The biological signal measuring apparatus, wherein the mounting state adjusting unit adjusts a position of the detecting unit with respect to the measurement site by moving the mounting unit in a direction not rotating along an outer periphery of the measurement site. It further comprises moving means that can move in a direction along the outer periphery of the space,
The detection means is arranged in the moving means,
The biological signal measuring apparatus according to claim 9, wherein the wearing state adjusting unit adjusts a position of the detecting unit with respect to the measurement site by moving the moving unit. The moving means is a ring-shaped or part-shaped member having the center of rotation at or near the center of the space,
The biological signal measuring apparatus according to claim 10, wherein the wearing state adjusting unit adjusts a position of the detecting unit with respect to the measurement site by rotating the moving unit. A method for adjusting the mounting state of a mounting device having an annular shape, a cylindrical shape, or a partial shape thereof on a mounting target,
A mounting state adjustment method, wherein the mounting state is adjusted by moving mounting state adjusting means for adjusting the mounting state in a direction in which the mounting means does not rotate along the outer periphery of the mounting target.

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