WO2008029617A1 - Wrist holding base for pulse wave measuring instrument and pulse wave measuring instrument having the same - Google Patents

Wrist holding base for pulse wave measuring instrument and pulse wave measuring instrument having the same Download PDF

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Publication number
WO2008029617A1
WO2008029617A1 PCT/JP2007/066242 JP2007066242W WO2008029617A1 WO 2008029617 A1 WO2008029617 A1 WO 2008029617A1 JP 2007066242 W JP2007066242 W JP 2007066242W WO 2008029617 A1 WO2008029617 A1 WO 2008029617A1
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WO
WIPO (PCT)
Prior art keywords
wrist
pulse wave
holding
wave measuring
measuring device
Prior art date
Application number
PCT/JP2007/066242
Other languages
French (fr)
Japanese (ja)
Inventor
Kazunobu Itonaga
Original Assignee
Omron Healthcare Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Omron Healthcare Co., Ltd. filed Critical Omron Healthcare Co., Ltd.
Publication of WO2008029617A1 publication Critical patent/WO2008029617A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure

Definitions

  • the present invention relates to a wrist holder for a pulse wave measuring device capable of holding the posture of a wrist in order to measure a periodic internal pressure fluctuation of an artery located under the wrist, and a pulse provided with the same.
  • the present invention relates to a wave measuring device.
  • Measuring the pulse wave of a subject is very important for knowing the health status of the subject. In recent years, it has been frequently performed to measure changes in cardiac load and arterial stiffness by measuring a subject's pulse wave.
  • the pulse wave measuring device non-invasively measures the internal pressure fluctuation of the radial artery located in a relatively shallow area under the wrist by pressing a pulse wave detecting unit including a sensor or the like against the surface of the wrist.
  • the pulse wave measuring device In order to accurately measure the pulse wave, the posture of the wrist needs to be stably maintained during the measurement. For this reason, the pulse wave measuring device is often provided with a wrist holder for stably holding the posture of the subject's wrist.
  • Patent Document 1 Japanese Patent Laid-Open No. 11 33007
  • Patent Document 2 Japanese Patent Laid-Open No. 2005-87483
  • the wrist posture is held stably.
  • the wrist posture is stably provided by the groove-shaped wrist holding portion provided on the upper portion of the holding base body placed on the placement surface such as a table. It is configured to be retained.
  • Patent Document 1 Japanese Patent Laid-Open No. 11 33007
  • Patent Document 2 JP 2005-87483 A
  • the wrist posture is stably held only by applying the wrist to the wrist holding portion provided at the upper part of the holding base body. Therefore, it is very easy to fix the wrist.
  • the part corresponding to the back side of the wrist is not correctly placed on the surface of the groove of the wrist holding part, it does not have a fastening tool like the band-shaped part described above. As a result, the measurement accuracy is lowered to the state where the wrist posture is stably held.
  • the present invention has been made to solve the above-described problems, is easy to wear, can stably hold the wrist posture, and has a pulse wave measurement accuracy. It is an object of the present invention to provide a wrist holding base for a pulse wave measuring device that does not decrease and a pulse wave measuring device including the same.
  • a wrist holding base for a pulse wave measuring device is provided on a mounting base body placed on a placement surface and an upper part of the holding base body, and the wrist is placed on the wrist.
  • a wrist holding part including a recessed groove capable of holding a posture, and a wrist detecting part provided on the wrist holding part for detecting whether or not the wrist is placed on the surface of the groove.
  • the wrist detecting unit is constituted by an optical sensor including a light projecting element and a light receiving element. Further, in the wrist holding base for the pulse wave measuring device according to the present invention, the wrist detecting unit is constituted by a contact type micro switch.
  • the groove has a ridge line extending in a direction along the circumferential direction of the wrist in a state where the wrist is placed on the wrist holding portion.
  • at least one wrist detection unit is provided on each of the two wrist support surfaces.
  • the groove corresponds to a portion corresponding to the palm side of the wrist when the wrist is placed on the wrist holding portion. It is preferable to have a shape that can hold the wrist in a tilted posture so that the radial side end of the wrist is positioned above the ulna side end of the wrist.
  • the measurement site of the wrist in which the pulsation of the radial artery is noticeable in a state where the wrist is placed can be in a horizontal state, and the wrist suitable for pulse wave measurement can be placed.
  • a holding posture can be realized.
  • a pulse wave measuring device includes a pulse wave detecting unit that detects a pulse wave, and the wrist holding base for the pulse wave measuring device according to any one of the above!
  • the pulse wave measuring device is obtained by the wrist detecting unit. It is preferable that a display unit capable of displaying information is further provided.
  • a wrist holder for a pulse wave measuring device that can be easily worn and can stably hold the posture of the wrist and that does not reduce the accuracy of measuring a pulse wave, and the wrist holder. It can be set as a pulse wave measuring device.
  • FIG. 1A is a skeleton view of the vicinity of the left wrist of a human body when viewed from the palm side of the left hand.
  • FIG. 1B is a cross-sectional view of the wrist taken along the line IB-IB shown in FIG. 1A.
  • FIG. 2 is a diagram showing an external structure of a wrist holder for a pulse wave measuring device according to an embodiment of the present invention.
  • FIG. 3 is a perspective view showing a structure of a wrist holding portion of a wrist holding base for a pulse wave measuring device according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a wrist holding portion of a wrist holding base for a pulse wave measuring device according to an embodiment of the present invention.
  • FIG. 5 is a diagram showing functional blocks of the pulse wave measuring device in the embodiment of the present invention.
  • FIG. 6 is a schematic perspective view for illustrating a procedure for setting the wrist of the left hand on the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention.
  • FIG. 7 is a schematic perspective view for illustrating a procedure for setting the wrist of the left hand on the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention.
  • FIG. 8A is a schematic perspective view showing a wrist holding state when a correct wrist holding posture is maintained.
  • FIG. 8B is a schematic sectional view taken along line VIIIB-VIIIB shown in FIG. 8A.
  • FIG. 9A is a schematic perspective view showing an example of a wrist holding state in the case of right! /, A wrist holding posture! /, Na! /.
  • FIG. 9B is a schematic cross-sectional view along the line IXB-IXB shown in FIG. 9A.
  • FIG. 10 shows a process for measuring a pulse wave in the pulse wave measuring apparatus according to the embodiment of the present invention. It is a flowchart which shows a procedure.
  • FIG. 11A is a diagram showing a display example on the display unit of the pulse wave measuring device in the embodiment of the present invention.
  • FIG. 11B is a diagram showing another display example on the display unit of the pulse wave measurement device according to the exemplary embodiment of the present invention.
  • FIG. 11C is a diagram showing still another display example on the display unit of the pulse wave measuring device in the embodiment of the present invention.
  • FIG. 12 is a cross-sectional view showing another configuration example of the wrist holding portion of the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention.
  • 1 pulse wave measuring device 2 wrist holding base for pulse wave measuring device, 3 PC, 10 holding base body, 10a top surface, 10b, 10c strut part, 11 recess, 12 wrist holding part, 13 'groove, 13a Ridge line, 13b Central wrist support surface, 13c Peripheral wrist support surface, 14A ⁇ ; 14C Wrist detection unit, 15a LED, 15b PD, 15c Microswitch, 16 pivot support, 17 pivot arm, 17a pivot shaft, 18 Pulse wave detection unit, 19a, 19b surface fastener, 31 pressure cuff, 32 pressure pump, 33 negative pressure pump, 34 switching valve, 35 control circuit, 36 pressure sensor, 37 A / D converter, 38 pulse wave sensor, 39 multiplexer , 40 A / D converter, 41 CPU, 42 ROM, 43 RAM, 44 control unit, 45 display unit, 51 left hand, 51a thumb, 51b little finger, 52a wrist joint striated, 52 wrist, 53 forearm, 56 rib, 56a Radial styloid process,
  • FIG. 1A is a skeletal view of the vicinity of the left wrist of the human body when viewed from the palm side of the left hand.
  • Fig. 1B is a view of the cross section of the left wrist as viewed from the central side to the peripheral side.
  • a radius 56 and an ulna 57 are positioned inside a wrist 52 positioned between the left hand 51 and the forearm 53. Ribs 56 and ulna 57, from elbow to wrist 52 Extending in parallel.
  • the radius 56 is located in the forearm 53 at a position corresponding to the thumb 51a side of the left hand 51
  • the ulna 57 is located in the forearm 53 at a position corresponding to the little finger 51b side of the left hand 51.
  • the ends of the radius 56 and the ulna 57 are located inside the wrist 52 .
  • the ends of the radius 56 and the ulna 57 have projection portions called the radius styloid process 56a and the ulnar styloid process 57a, respectively.
  • a radial artery 58 is located between the rib 56 and the skin of the wrist 52 corresponding to the palm side of the left hand 51.
  • the radial artery 58 extends in substantially the same direction as the radius 56 extends.
  • a front joint striated pattern 52a is located on the skin of the wrist 52 corresponding to the palm side of the left hand 51. This wrist joint front striated line 52a extends in the circumferential direction of the wrist 52.
  • the portion of the wrist 52 on the side where the radius 56 is located is referred to as the “radial side portion of the wrist 52” and the portion on the side of the wrist 52 where the ulna 57 is located. This is called “the ulna side of the wrist”.
  • the ulna side of the wrist In addition, of the boundary on the body surface between the part corresponding to the palm side of the left hand 51 of the wrist 52 and the part corresponding to the back side of the left hand 51 of the wrist 52, it is located on the body surface of the side part of the rib of the wrist 52
  • the portion to be referred to as “radial side end” and the portion located on the body surface of the ulna side portion of the wrist 52 is referred to as “ulna side end”.
  • the radius side end is designated P
  • FIG. 2 is a diagram showing an external structure of a wrist holder for a pulse wave measuring device according to an embodiment of the present invention.
  • FIG. 3 is a perspective view showing the structure of the wrist holding part of the wrist holding table for the pulse wave measuring device shown in FIG. 2, and
  • FIG. 4 shows the wrist holding part along the IV-IV line shown in FIG. It is a sectional view.
  • the wrist holding base 2 for pulse wave measuring device in the present embodiment has a holding base body 10 placed on a placement surface such as a table.
  • the holding base body 10 has a flat, substantially rectangular parallelepiped outer shape, and its upper surface 10a is gently inclined so that the front side (subject side) is gradually lowered toward the back side. It is formed to have a high height.
  • a concave portion 11 for receiving the forearm is provided at a predetermined position on the upper surface 10a of the holding base body 10.
  • the recess 11 has a gently curved shape so that the forearm can be easily fitted!
  • a wrist holding portion 12 for holding the wrist is positioned on an extension line in the extending direction of the concave portion 11 of the holding base body 10.
  • the wrist holding unit 12 is formed of a member separate from the holding base body 10 and is detachably attached to the holding base body 10. More specifically, the wrist holding portion 12 is configured to be fitted into the guide rails of the column portions 10b and 10c provided in the holding base body 10 by providing a guide groove on a side surface thereof. The specific structure of the wrist holder 12 will be described later.
  • the holding base body 10 has a rotating arm 17 at a predetermined position on the upper surface 10a thereof.
  • a shaft support 16 projects upward from the upper surface 10a of the holding base body 10 on the left side of the position where the wrist holding part 12 of the holding base body 10 is attached.
  • a rotating shaft 17a provided at one end in the longitudinal direction of the rotating arm 17 is supported.
  • the pivot arm 17 pivots in the direction of arrow R in the figure with the pivot shaft 17a as the central axis with respect to the holder base body 10, and the wrist is placed on the holder base body 10 In this case, the wrist can be sandwiched between the holding base body 10.
  • the rotation shaft 17a of the rotation arm 17 is arranged so as to extend in a direction parallel to the axial direction of the wrist placed on the holding base body 10.
  • a pulse wave detector 18 is provided at a predetermined position on the lower surface of the rotating arm 17.
  • the pulse wave detection unit 18 includes a pulse wave sensor 38 (see FIG. 5) for detecting a pulse wave and a press cuff 31 (see FIG. 5) for pressing the pulse wave sensor 38 toward the wrist.
  • the pulse wave sensor 38 include a pressure sensor having a capacitance element, a pressure sensor having a strain resistance element, and an impedance measurement sensor capable of measuring bioimpedance. Is available.
  • the pressing cuff 31 it is also possible to use a mechanical actuator such as a motor or a solenoid in addition to a force that can preferably use a fluid bag into which gas or liquid can be introduced.
  • a surface fastener 19a is attached to the other end in the longitudinal direction of the rotating arm 17, and a surface fastener 19b that engages with the surface fastener 19a is provided at a predetermined position on the side surface of the holding base body 10. Installed.
  • These hook-and-loop fasteners 19a and 19b can be locked by contacting each other, and maintain the state in a state where the wrist placed on the holding base body 10 is sandwiched between the rotating arm 17 and the holding base body 10. Functions as a member. More specifically, the hook-and-loop fasteners 19a and 19b are configured so that the rotating arm 17 has the holding base body 10 in a state where the wrist placed on the holding base body 10 is sandwiched between the rotating arm 17 and the holding base body 10. It functions as a member that restricts the movement of the pulse wave in the direction away from the head, thereby maintaining an appropriate pressing state of the pulse wave detection unit 18 against the wrist.
  • the pulse wave measurement device includes a PC (personal computer) 3 (see FIG. 5) as an external terminal in addition to the above-described wrist holder 2 for the pulse wave measurement device.
  • the PC 3 as an external terminal is a device for obtaining a pulse wave by performing arithmetic processing mainly based on the information detected by the pulse wave detection unit 18 described above.
  • the wrist holder 2 for the pulse wave measuring device 2 and the PC 3 are connected with a force S connected by a connection cable such as a USB (universal serial bus) cable, for example.
  • the pulse wave measuring device By connecting the connection cable to the input / output terminal provided on the front surface of the wrist holder 2 for the fixed device, the wrist holder 2 for the pulse wave measuring device 2 and the PC 3 are connected.
  • the wrist holding part 12 is composed of a box-shaped member having a substantially rectangular parallelepiped outer shape.
  • the wrist holding portion 12 On the upper surface of the wrist holding portion 12, there is provided a recess-shaped groove 13 that can receive the wrist corresponding to the back side of the left hand.
  • the surface of the groove 13 has two inclined surfaces with a ridge line 13a extending in a direction along the circumferential direction of the wrist in a state where the wrist is placed on the wrist holding portion 12 as a boundary.
  • the inclined surface located on the front side (subject side) of the holding base body 10 is the center side of the wrist (that is, the forearm) when the wrist is placed on the wrist holding part 12.
  • Side is a central wrist support surface 13b that supports the portion by being addressed
  • the inclined surface located on the back side of the holding base body 10 is a state where the wrist is placed on the wrist holding portion 12
  • This is a peripheral wrist support surface 13c that supports the peripheral portion of the wrist when the peripheral portion of the wrist is attached.
  • Each wrist support surface 13b, 13c is lowered in height as it moves away from the ridge 13a in a direction parallel to the axial direction of the wrist while the wrist is placed on the wrist holding portion 12. It is formed in a shape that gradually becomes lower toward.
  • Each wrist support surface 13b, 13c has a shape curved in the direction along the circumferential direction of the wrist when the wrist is placed on the wrist holding portion 12, and the wrist of the left hand is placed in the groove 13. In a state in which the wrist is held in an inclined position so that the portion corresponding to the palm side of the wrist faces upward and the radius side end of the wrist is positioned above the ulna side end of the wrist Is formed. More specifically, the surface of the groove 13 is formed asymmetrically (so that the left and right curvatures are different) in the direction intersecting the axial direction of the wrist! /.
  • Two wrist detectors 14A and 14B are provided at predetermined positions on the central wrist support surface 13b.
  • one wrist detector 14C is provided at a predetermined position on the distal wrist support surface 13c.
  • Each of these wrist detection units 14A to 14C is an optical system including an LED (light-emitting diode) 15a as a light emitting element and a PD (photo diode) 15b as a light receiving element disposed in the wrist holding unit 12. It consists of sensors. More specifically, a translucent window is provided on the surface of the groove 13 (that is, the central wrist support surface 13b and the distal wrist support surface 13c), and is positioned corresponding to the translucent window. Thus, the LED 15a and the PD 15b are arranged in the wrist holding part 12.
  • FIG. 5 is a diagram showing functional blocks of the pulse wave measurement device according to the embodiment of the present invention. Note that FIG. 5 also shows a PC as an external terminal of the pulse wave measuring device. Next, a functional block of the pulse wave measurement device according to the present embodiment will be described with reference to this figure.
  • the pulse wave measuring device 1 is composed of a pulse wave measuring device wrist holder 2 and a PC 3, each of which has various functional blocks.
  • the wrist holder 2 for the pulse wave measuring device is provided with the pulse wave detector 18 as described above, and the pulse wave detector
  • the unit 18 includes a pulse wave sensor 38, a multiplexer 39 as a signal extraction unit that selectively multiplexes and selectively derives a plurality of voltage signals output from the pulse wave sensor 38, and a pulse wave sensor 38 on the wrist.
  • a pressing cuff 31 that is pressure-adjusted for pressing is provided.
  • the holding base body 10 of the wrist holding base 2 for the pulse wave measuring device includes, in addition to the above, a pressurizing pump 32 for increasing the internal pressure of the pressing cuff 31 (hereinafter also referred to as cuff pressure), A negative pressure pump 33 for reducing the internal pressure, a switching valve 34 for selectively connecting one of the pressure pump 32 and the negative pressure pump 33 to the pressure cuff 31, and the pressure pump 32, negative pressure A control circuit 35 for controlling the operation of the pump 33 and the switching valve 34, a pressure sensor 36 for detecting the pressure in the pressure cuff 31, and an analog signal derived from the pressure sensor 36 for converting the digital signal into a digital signal An A / D converter 37, an A / D converter 40 for converting an analog signal derived from the pulse wave detector 18 into a digital signal, and LEDs 15a and PD15b constituting the wrist detectors 14A to 14C are provided. It has been. In FIG. 5, only one LED 15a and one PD15b are shown, but
  • the PC 3 controls a central processing unit (CPU) 41 as an arithmetic processing unit that executes various arithmetic processes including arithmetic operations for centrally controlling the pulse wave measuring device 1, and a pulse wave measuring device.
  • CPU central processing unit
  • ROM read only memory
  • RAM random access memory
  • ROM read only memory
  • operation unit 44 that can be operated from the outside and operated to input various information
  • a display unit 45 consisting of a liquid crystal display (LCD) for externally outputting various information such as measurement results.
  • LCD liquid crystal display
  • FIG. 6 and FIG. 7 are schematic perspective views for illustrating a procedure for setting the wrist of the left hand on the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention.
  • a procedure for setting the wrist of the left hand on the wrist holder for the pulse wave measuring device in the present embodiment will be described.
  • the wrist holder 2 for the pulse wave measuring device is placed on a placement surface such as a table. Subsequently, as shown in FIG. 6, a forearm 53 that is hung from the elbow to the wrist 52 is placed on the recess 11 provided on the upper surface 10 a of the holding base body 10. At this time, the hand corresponding to the back side of the left hand 51 The neck 52 is positioned and arranged in the groove 13 of the wrist holder 12. More specifically, the wrist joint front lateral pattern 52a of the wrist 52 is used as a mark, and the wrist joint front lateral pattern 52a is positioned slightly behind the groove 13. As a result, the measurement site 100 where the pulsation of the radial artery appears remarkably on the skin is positioned on the groove 13.
  • the groove 13 of the wrist holder 12 is formed so as to be in a state suitable for holding the wrist 52 of the left hand 51 as described above. Therefore, as shown in FIG. 6, when the wrist 52 of the left hand 51 is placed on the holding base body 10, the wrist 52 corresponding to the palm side of the left hand 51 faces upward and the wrist 52 Wrist holder 1 so that the radius side end P is positioned above the ulna side end P of the wrist 52
  • the rotating arm 17 is rotated toward the holding base body 10 side, and the wrist 52 placed on the wrist holding portion 12 of the holding base body 10 is rotated.
  • the pulse wave detection unit 18 provided on the lower surface of the rotating arm 17 is brought into contact with the measurement site 100 so as to be sandwiched between the arm 17 and the holding base body 10.
  • the positions of the forearm 53 and the wrist 52 placed on the concave portion 11 are finely adjusted so that the pulse wave detection unit 18 contacts the measurement site 100.
  • FIG. 8A is a schematic perspective view showing a wrist holding state when a correct wrist holding posture is maintained through the above-described wearing procedure
  • FIG. 8B is a view taken along the line VIIIB-VIII shown in FIG. 8A. It is a schematic sectional drawing in alignment with B line.
  • FIG. 8B is a view when the cross section of the left wrist is viewed from the distal side toward the central side.
  • FIG. 9A is a schematic perspective view showing an example of a wrist holding state when the correct wrist holding posture is not achieved
  • FIG. 9B is a schematic cross-sectional view taken along the line XIB-XIB shown in FIG. 9A.
  • FIG. Figure 9B shows the left wrist cross section from the distal side.
  • FIG. 9A and FIG. 9B shows the wrist holding state when the wrist is displaced toward the subject as compared to the correct wrist holding state.
  • the central side of the wrist 52 corresponding to the back side of the left hand 51 (Forearm 53 side) is in a state where it is directed to the wrist support surface 13b on the central side of the groove 13 of the wrist holder 12, and the distal side (left hand 51) of the wrist 52 corresponding to the back side of the left hand 51 Side) is in a state of being addressed to the distal wrist support surface 13c of the groove 13 of the wrist holder 12. That is, the posture of the left hand 51 is held by the wrist holding unit 12 with the wrist 52 slightly tilted toward the back side.
  • the surface of the wrist 52 corresponding to the back side of the left hand 51 is in contact with the central wrist support surface 13b and the distal wrist support surface 13c, and is connected to the wrist detection units 14A to 14C. All the translucent windows provided accordingly are covered with the wrist 52.
  • the light emitted from the LED 15a is reflected on the surface of the wrist 52 of the left hand 51, and the reflected light is received by the PD 15b. Therefore, it is detected by the wrist detection units 14A to 14C that the wrist 52 of the left hand 51 is correctly addressed to the surface of the groove 13.
  • the wrist 52 is held when the wrist 52 is displaced toward the subject as compared to the correct wrist holding state!
  • the central side (forearm 53 side) of the wrist 52 is in a state of being in contact with the central wrist support surface 13b of the groove 13 of the wrist holder 12, while the back of the left hand 51
  • the distal side (left hand 51 side) portion of the wrist 52 corresponding to the side is not in contact with the distal wrist support surface 13c of the groove 13 of the wrist holding portion 12. That is, when the wrist 52 of the left hand 51 is displaced toward the subject, a distance D is generated between the distal wrist support surface 13c and the distal portion of the wrist 52 as shown in FIG. 9B.
  • the wrist 52 of the left hand 51 is formed into the groove 13 by the wrist detectors 14A to 14C.
  • the wrist detection units 14A to 14C are provided on each of the central wrist support surface 13b and the distal wrist support surface 13c of the groove 13 of the wrist holding unit 12, which is suitable for pulse wave measurement.
  • the wrist detection unit 14A to 14C can reliably detect whether the state where the wrist 52 is warped is reproduced. For this reason, it is possible to use the information S to facilitate wearing or to urge the subject to keep the wrist 52 in a stable position.
  • the detection result of the wrist 52 of the left hand 51 by the wrist detection units 14A to 14C can be displayed on the display unit 45 of the PC 3.
  • the detection result in the wrist detection unit is used will be described by specifically showing the processing procedure of the pulse wave measurement device 1 and the display example on the display unit 45 in the present embodiment. .
  • FIG. 10 is a flowchart showing a processing procedure for pulse wave measurement in the pulse wave measurement device according to the embodiment of the present invention.
  • FIG. 11 is a diagram showing a display example on the display unit of the pulse wave measurement device according to the present embodiment.
  • the program according to the flowchart shown in FIG. 10 and the data to be referred to at the time of executing the program are stored in the ROM 42 or RAM 43 in advance, and the CPU 41 reads and executes the program while referring to this data as appropriate.
  • the measurement process proceeds.
  • the CPU 41 instructs the control circuit 35 to drive the negative pressure pump 33. Based on this instruction, the control circuit 35 switches the switching valve 34 to the negative pressure pump 33 side and drives the negative pressure pump 33 (step S).
  • the cuff pressure acts to be sufficiently lower than the atmospheric pressure via the switching valve 34, so the pulse wave sensor 38 moves upward in the pulse wave detector 18. To do. As a result, it can be avoided that the pulse wave sensor 38 protrudes carelessly and malfunctions or breaks down.
  • the subject wears the pulse wave detector 18 on the wrist by the wearing procedure shown in FIGS. 6 and 7 described above.
  • the CPU 41 drives the optical sensor composed of the LEDs 15a and PD15b as the wrist detection units 14A to 14C, and monitors whether the reflected light is detected by irradiating light toward the wrist 52 of the left hand 51. (Step S2).
  • FIG. 11A is a display example in the case where no wrist is detected in any of the wrist detection units 14A to 14C, and any of the wrist detection units 14A to 14C and signal signals SA to SC corresponding to 14C is shown. Since is not lit, the subject is prompted to place the wrist of his left hand on the wrist holder 12.
  • FIG. 11A is a display example in the case where no wrist is detected in any of the wrist detection units 14A to 14C, and any of the wrist detection units 14A to 14C and signal signals SA to SC corresponding to 14C is shown. Since is not lit, the subject is prompted to place the wrist of his left hand on the wrist holder 12.
  • 11B is a display example when a wrist is detected in the wrist detection units 14A and 14B, but a wrist is not detected in the wrist detection unit 14C, and the signals SA and W corresponding to the wrist detection units 14A and 14B are shown. Although the SB lights up, the signal SC corresponding to the wrist detection unit 14C is turned off, and the subject is urged to correct the wrist holding posture.
  • Fig. 11C shows a display example when a wrist is detected in any of the wrist detection units 14A ⁇ ; 14C because the correct holding posture of the wrist is realized, and corresponds to the wrist detection units 14A ⁇ ; 14C
  • any of the signals SA to SC is turned on, the subject is informed that it is possible to shift to pulse wave measurement.
  • step S2 when a wrist is detected in step S2 (YE in step S2).
  • S) waits for the start button (not shown) to be turned on, and the CPU 41 instructs the control circuit 35 to drive the pressurizing pump 32.
  • the control circuit 35 switches the switching valve 34 to the pressurizing pump 32 side based on this instruction and drives the pressurizing pump 32 (step S4).
  • the cuff pressure rises, and the pulse wave sensor 38 descends toward the wrist and is pressed against the surface of the wrist that is the measurement site.
  • step S5 determines whether or not the conditions for pulse wave detection are satisfied. If the conditions for pulse wave detection are satisfied (YES in step S5), the pressure level applied to the measurement site of the pulse wave sensor 38 by the pressure cuff 31 becomes the optimum level for pulse wave detection. As described above, the output of the pressurizing pump 32 is adjusted (step S6).
  • pressure information output by the pulse wave sensor 38 that is, the waveform data of the radial artery pulse wave, is sent to the CPU 41 via the multiplexer 39 and the A / D converter 40. Transferred (step S7).
  • the CPU 41 receives the waveform data and detects a pulse wave based on the received waveform data.
  • the pulse wave data transfer process in step S7 is repeated until the waveform data is received and it is determined that the predetermined condition for completion of pulse wave detection is satisfied. Since the pulse wave detection process based on the received waveform data follows a known procedure, the details are omitted here.
  • the CPU 41 controls to drive the negative pressure pump 33 via the switching valve 34 (step S9). As a result, the pressure state of the pulse wave sensor 38 on the wrist is released, and the series of pulse wave detection processing ends.
  • the CPU 41 outputs the detected pulse wave information to the outside via the display unit 45 or the like.
  • pulse wave information may be output as an AI (Augmentation Index) value.
  • the wrist holder for the pulse wave measuring device as in the present embodiment
  • Equipped with pulse wave measuring device 1 with 2 easy to wear and stable wrist posture It is possible to maintain a pulse wave measuring device that can be held at the same time and does not reduce the accuracy of pulse wave measurement.
  • a contact-type microswitch 15c can be used as a wrist detection unit.
  • an opening is provided in the groove 13 so that the microswitch 15c contacts the wrist placed in the groove 13 of the wrist holding portion 12, and the tip of the switch extends from the opening to the surface of the groove 13. It is necessary to arrange it so that it protrudes slightly from.
  • the wrist detection unit is provided at three positions on the wrist holding unit has been described as an example, but the number of wrist detection units is particularly limited. It is not something. Further, the arrangement position can be changed as appropriate.
  • the force display unit described above exemplifies the case where the detection result of the wrist detection unit is displayed as a signal on the display unit. It is also possible to display the dance text or notify the subject by sound or voice.
  • the pulse wave measurement can be performed only when the wrist is in the correct holding posture by the wrist detection unit before the pulse wave measurement is performed. Illustrated and explained force S, the wrist detection unit constantly monitors whether the wrist is correct! / Even during measurement, and if there is a problem with the wrist holding posture, the pulse wave
  • the device may be configured to notify the subject that the measurement has failed by interrupting the measurement, or to inform the subject that there is a problem with the reliability of the measurement result, although the measurement continues. .
  • the wrist for the pulse wave measurement device configured to be able to use the wrist of the left hand as a measurement site for pulse wave measurement.
  • the table and the pulse wave measuring apparatus provided with the same have been described as an example, but the wrist of the right hand is used for the pulse wave measuring apparatus configured to be used as a measurement site for pulse wave measurement.
  • the present invention can also be applied to a wrist holder and a pulse wave measuring apparatus having the wrist holder.
  • a wrist holder for a pulse wave measuring device configured to be able to use both the wrist of the left hand and the wrist of the right hand as a measurement site for pulse wave measurement, and the same are provided. It is also possible to apply the present invention to a pulse wave measuring apparatus.

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Abstract

A wrist holding base for a pulse wave measuring instrument has a holding base body placed on a placement surface, a wrist holding part (12) installed on the upper part of the holding base body and having a groove (13) capable of holding the position of a user's wrist (52) when it is placed groove, and wrist detection parts (14A to 14C) arranged on the wrist holding part (12) and detecting whether or not the wrist is placed on the surface of the groove (13). The user's wrist can be easily installed on the wrist holding base, and the wrist holding base can stably hold the position of the wrist to prevent a reduction in pulse wave measuring accuracy.

Description

明 細 書  Specification
脈波測定装置用手首保持台およびこれを備えた脈波測定装置 技術分野  Wrist holder for pulse wave measuring device and pulse wave measuring device having the same
[0001] 本発明は、手首の皮下に位置する動脈の周期的な内圧変動を測定するために手 首の姿勢を保持することが可能な脈波測定装置用手首保持台およびこれを備えた 脈波測定装置に関する。  [0001] The present invention relates to a wrist holder for a pulse wave measuring device capable of holding the posture of a wrist in order to measure a periodic internal pressure fluctuation of an artery located under the wrist, and a pulse provided with the same. The present invention relates to a wave measuring device.
背景技術  Background art
[0002] 被験者の脈波を測定することは、被験者の健康状態を知る上で非常に重要なこと である。近年、被験者の脈波を測定することによって心臓負荷や動脈の硬さの変化 等を把握することが頻繁に行なわれている。脈波測定装置は、手首の皮下の比較的 浅いところに位置する橈骨動脈の内圧変動をセンサ等を含む脈波検出部を手首の 表面に押圧することによって非侵襲に測定するものである。  [0002] Measuring the pulse wave of a subject is very important for knowing the health status of the subject. In recent years, it has been frequently performed to measure changes in cardiac load and arterial stiffness by measuring a subject's pulse wave. The pulse wave measuring device non-invasively measures the internal pressure fluctuation of the radial artery located in a relatively shallow area under the wrist by pressing a pulse wave detecting unit including a sensor or the like against the surface of the wrist.
[0003] 脈波を精度よく測定するためには、測定中において手首の姿勢が安定的に保持さ れることが必要である。このため、脈波測定装置においては、被験者の手首の姿勢を 安定的に保持するための手首保持具が具備されることが多い。  [0003] In order to accurately measure the pulse wave, the posture of the wrist needs to be stably maintained during the measurement. For this reason, the pulse wave measuring device is often provided with a wrist holder for stably holding the posture of the subject's wrist.
[0004] 上記手首保持具を具備した脈波測定装置としては、たとえば特開平 11 33007 号公報（特許文献 1)に開示のものゃ特開 2005— 87483号公報（特許文献 2)に開 示のもの等がある。上記特許文献 1に開示の脈波測定装置においては、手首の甲側 に対応する部分から前腕にかけて跨って宛がわれる板状の部材と、この板状の部材 に取付けられた帯状の部材とによって手首の姿勢が安定的に保持されるように構成 している。また、上記特許文献 2に開示の脈波測定装置においては、テーブル等の 載置面に載置される保持台本体の上部に設けられた溝形状の手首保持部によって 手首の姿勢が安定的に保持されるように構成している。  [0004] As a pulse wave measuring device equipped with the wrist holder, for example, one disclosed in Japanese Patent Laid-Open No. 11 33007 (Patent Document 1) is disclosed in Japanese Patent Laid-Open No. 2005-87483 (Patent Document 2). There are things. In the pulse wave measuring device disclosed in Patent Document 1, a plate-like member that is straddled across from the portion corresponding to the back side of the wrist to the forearm, and a belt-like member attached to the plate-like member. The wrist posture is held stably. Further, in the pulse wave measuring device disclosed in Patent Document 2, the wrist posture is stably provided by the groove-shaped wrist holding portion provided on the upper portion of the holding base body placed on the placement surface such as a table. It is configured to be retained.
特許文献 1 :特開平 11 33007号公報  Patent Document 1: Japanese Patent Laid-Open No. 11 33007
特許文献 2：特開 2005— 87483号公報  Patent Document 2: JP 2005-87483 A
発明の開示  Disclosure of the invention
発明が解決しょうとする課題 [0005] 上記特許文献 1に開示の手首保持具にあっては、帯状の部材によって前腕および 手が板状の部材に固定されるため、手首の姿勢が確実に保持される。し力、しな力 Sら、 その反面、帯状の部材を前腕および手に対して締め付ける作業が必要であり、その 装着作業は非常に煩雑なものとなる。特に、被験者自らが手首保持具に手首を固定 するためには片手での装着作業が強いられるため、その作業性は著しい困難を伴う ものとなってしまう。 Problems to be solved by the invention [0005] In the wrist holder disclosed in Patent Document 1, the forearm and the hand are fixed to the plate-like member by the belt-like member, so that the posture of the wrist is securely held. On the other hand, it is necessary to tighten the belt-shaped member against the forearm and the hand, and the mounting work becomes very complicated. In particular, since the subject himself is forced to attach the wrist to the wrist holder with one hand, the workability becomes extremely difficult.
[0006] これに対し、上記特許文献 2に開示の手首保持台にあっては、保持台本体の上部 に設けられた手首保持部に手首を宛がうのみで手首の姿勢が安定的に保持される ため、手首を固定する作業が非常に容易に行なえる。し力、しながら、上述の帯状の部 材の如くの締め付け具を有していないため、手首の甲側に対応する部分が手首保持 部の溝の表面に正しく宛がわれていない場合には、手首の姿勢が安定的に保持さ れている状態になぐ測定精度の低下を伴ってしまうものとなってしまう。  [0006] On the other hand, in the wrist holding base disclosed in Patent Document 2, the wrist posture is stably held only by applying the wrist to the wrist holding portion provided at the upper part of the holding base body. Therefore, it is very easy to fix the wrist. However, if the part corresponding to the back side of the wrist is not correctly placed on the surface of the groove of the wrist holding part, it does not have a fastening tool like the band-shaped part described above. As a result, the measurement accuracy is lowered to the state where the wrist posture is stably held.
[0007] したがって、本発明は、上述の問題点を解決すべくなされたものであり、装着が容 易でかつ手首の姿勢を安定的に保持することが可能であるとともに脈波の測定精度 が低下しない脈波測定装置用手首保持台およびこれを備えた脈波測定装置を提供 することを目白勺とする。  [0007] Therefore, the present invention has been made to solve the above-described problems, is easy to wear, can stably hold the wrist posture, and has a pulse wave measurement accuracy. It is an object of the present invention to provide a wrist holding base for a pulse wave measuring device that does not decrease and a pulse wave measuring device including the same.
課題を解決するための手段  Means for solving the problem
[0008] 本発明に基づく脈波測定装置用手首保持台は、載置面に載置される保持台本体 と、上記保持台本体の上部に設けられ、手首が載置されることによって手首の姿勢を 保持することが可能な窪み形状の溝を含む手首保持部と、上記手首保持部に設けら れ、上記溝の表面に手首が宛がわれているか否かを検出する手首検出部とを備える [0008] A wrist holding base for a pulse wave measuring device according to the present invention is provided on a mounting base body placed on a placement surface and an upper part of the holding base body, and the wrist is placed on the wrist. A wrist holding part including a recessed groove capable of holding a posture, and a wrist detecting part provided on the wrist holding part for detecting whether or not the wrist is placed on the surface of the groove. Prepare
[0009] このように構成することにより、手首検出部によって手首が手首保持部の溝の表面 に正しく宛がわれているか否かが検出可能となり、手首の保持状態が測定に適したも のとなつているか否かを判別することが可能になる。そのため、当該情報を利用すれ ば装着を容易化することができたり、手首の姿勢が安定的に保持されるように被験者 に促したりすること力 Sできる。したがって、脈波測定の精度低下を効果的に防止する ことが可能になる。 [0010] 上記本発明に基づく脈波測定装置用手首保持台にあっては、上記手首検出部が 投光素子および受光素子を含む光学センサにて構成されていることが好ましい。ま た、上記本発明に基づく脈波測定装置用手首保持台にあっては、上記手首検出部 が接触式のマイクロスイッチにて構成されて!/、てもよレ、。 With this configuration, it is possible to detect whether or not the wrist is correctly addressed to the surface of the groove of the wrist holder by the wrist detector, and the wrist holding state is suitable for measurement. It is possible to determine whether or not Therefore, if this information is used, it is possible to facilitate wearing and to encourage the subject to maintain a stable wrist posture. Therefore, it is possible to effectively prevent a decrease in accuracy of pulse wave measurement. [0010] In the wrist holding base for a pulse wave measuring device according to the present invention, it is preferable that the wrist detecting unit is constituted by an optical sensor including a light projecting element and a light receiving element. Further, in the wrist holding base for the pulse wave measuring device according to the present invention, the wrist detecting unit is constituted by a contact type micro switch.
[0011] このように構成することにより、手首検出部によって手首が手首保持部の溝の表面 に正しく宛がわれているか否かを精度よく検出することが可能となる。  With this configuration, it is possible to accurately detect whether or not the wrist is correctly placed on the surface of the groove of the wrist holding unit by the wrist detection unit.
[0012] 上記本発明に基づく脈波測定装置用手首保持台にあっては、上記溝が、上記手 首保持部に手首が載置された状態において手首の周方向に沿う方向に延びる稜線 を境として互いに上記稜線から手首の軸方向に遠ざかるに連れて下方に向けて傾 斜する 2つの手首支持面を有していることが好ましい。その場合に、上記手首検出部 が上記 2つの手首支持面のそれぞれに少なくとも 1つ以上設けられていることが好ま しい。  [0012] In the wrist support base for the pulse wave measurement device according to the present invention, the groove has a ridge line extending in a direction along the circumferential direction of the wrist in a state where the wrist is placed on the wrist holding portion. As a boundary, it is preferable to have two wrist support surfaces that are inclined downward as they move away from the ridgeline in the axial direction of the wrist. In this case, it is preferable that at least one wrist detection unit is provided on each of the two wrist support surfaces.
[0013] このように構成することにより、脈波測定に適した手首を反らした状態を実現するこ とが可能になるとともに、当該状態が再現されているか手首検出部によって確実に検 出すること力 Sできるようになる。  With this configuration, it is possible to realize a state where the wrist is warped suitable for pulse wave measurement, and to reliably detect whether the state is reproduced by the wrist detection unit. Power S will be able to.
[0014] 上記本発明に基づく脈波測定装置用手首保持台にあっては、上記溝が、上記手 首保持部に手首が載置された状態において手首の掌側に対応する部分が上方を向 きかつ手首の橈骨側端部が手首の尺骨側端部よりも上方に位置するように手首を傾 斜姿勢にて保持可能な形状を有してレ、ることが好ましレ、。  [0014] In the wrist holding base for the pulse wave measuring device according to the present invention, the groove corresponds to a portion corresponding to the palm side of the wrist when the wrist is placed on the wrist holding portion. It is preferable to have a shape that can hold the wrist in a tilted posture so that the radial side end of the wrist is positioned above the ulna side end of the wrist.
[0015] このように構成することにより、手首が載置された状態において橈骨動脈の脈動が 顕著に現れる手首の被測定部位を水平な状態とすることができ、脈波測定に適した 手首の保持姿勢を実現することが可能になる。  [0015] By configuring in this manner, the measurement site of the wrist in which the pulsation of the radial artery is noticeable in a state where the wrist is placed can be in a horizontal state, and the wrist suitable for pulse wave measurement can be placed. A holding posture can be realized.
[0016] 本発明に基づく脈波測定装置は、脈波を検出する脈波検出部と、上述の!/、ずれか に記載の脈波測定装置用手首保持台とを備える。 [0016] A pulse wave measuring device according to the present invention includes a pulse wave detecting unit that detects a pulse wave, and the wrist holding base for the pulse wave measuring device according to any one of the above!
[0017] このように構成することにより、装着が容易でかつ手首の姿勢を安定的に保持する ことが可能であるとともに脈波の測定精度が低下しない脈波測定装置とすることがで きる。 With this configuration, it is possible to provide a pulse wave measuring device that is easy to wear and that can stably hold the posture of the wrist and that does not reduce the accuracy of pulse wave measurement.
[0018] 上記本発明に基づく脈波測定装置においては、上記手首検出部によって得られた 情報を表示可能な表示部がさらに設けられていることが好ましい。 [0018] In the pulse wave measuring device according to the present invention, the pulse wave measuring device is obtained by the wrist detecting unit. It is preferable that a display unit capable of displaying information is further provided.
[0019] このように構成することにより、装着に際して被験者に正しい手首の保持姿勢を実 現するように促すことができるとともに、装着作業を大幅に容易化することができる。 発明の効果 [0019] With this configuration, it is possible to prompt the subject to realize a correct wrist holding posture at the time of wearing, and the wearing work can be greatly facilitated. The invention's effect
[0020] 本発明によれば、装着が容易でかつ手首の姿勢を安定的に保持することが可能で あるとともに脈波の測定精度が低下しない脈波測定装置用手首保持台およびこれを 備えた脈波測定装置とすることができる。  [0020] According to the present invention, there is provided a wrist holder for a pulse wave measuring device that can be easily worn and can stably hold the posture of the wrist and that does not reduce the accuracy of measuring a pulse wave, and the wrist holder. It can be set as a pulse wave measuring device.
図面の簡単な説明  Brief Description of Drawings
[0021] [図 1A]人体の左手首近傍を左手の掌側から見た場合の骨格図である。  [0021] FIG. 1A is a skeleton view of the vicinity of the left wrist of a human body when viewed from the palm side of the left hand.
[図 1B]図 1 A中に示す IB— IB線に沿った手首の矢視断面図である。  FIG. 1B is a cross-sectional view of the wrist taken along the line IB-IB shown in FIG. 1A.
[図 2]本発明の実施の形態における脈波測定装置用手首保持台の外観構造を示す 図である。  FIG. 2 is a diagram showing an external structure of a wrist holder for a pulse wave measuring device according to an embodiment of the present invention.
[図 3]本発明の実施の形態における脈波測定装置用手首保持台の手首保持部の構 造を示す斜視図である。  FIG. 3 is a perspective view showing a structure of a wrist holding portion of a wrist holding base for a pulse wave measuring device according to an embodiment of the present invention.
[図 4]本発明の実施の形態における脈波測定装置用手首保持台の手首保持部の断 面図である。  FIG. 4 is a cross-sectional view of a wrist holding portion of a wrist holding base for a pulse wave measuring device according to an embodiment of the present invention.
[図 5]本発明の実施の形態における脈波測定装置の機能ブロックを示す図である。  FIG. 5 is a diagram showing functional blocks of the pulse wave measuring device in the embodiment of the present invention.
[図 6]本発明の実施の形態における脈波測定装置用手首保持台に左手の手首をセ ットする手順を示すための概略斜視図である。  FIG. 6 is a schematic perspective view for illustrating a procedure for setting the wrist of the left hand on the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention.
[図 7]本発明の実施の形態における脈波測定装置用手首保持台に左手の手首をセ ットする手順を示すための概略斜視図である。  FIG. 7 is a schematic perspective view for illustrating a procedure for setting the wrist of the left hand on the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention.
[図 8A]正しい手首の保持姿勢が維持された場合の手首の保持状態を示す概略斜視 図である。  FIG. 8A is a schematic perspective view showing a wrist holding state when a correct wrist holding posture is maintained.
[図 8B]図 8A中に示す VIIIB—VIIIB線に沿った概略断面図である。  FIG. 8B is a schematic sectional view taken along line VIIIB-VIIIB shown in FIG. 8A.
[図 9A]正し!/、手首の保持姿勢となって!/、な!/、場合の手首の保持状態の一例を示す 概略斜視図である。  FIG. 9A is a schematic perspective view showing an example of a wrist holding state in the case of right! /, A wrist holding posture! /, Na! /.
[図 9B]図 9A中に示す IXB— IXB線に沿った概略断面図である。  FIG. 9B is a schematic cross-sectional view along the line IXB-IXB shown in FIG. 9A.
[図 10]本発明の実施の形態における脈波測定装置における脈波測定のための処理 手順を示すフローチャートである。 FIG. 10 shows a process for measuring a pulse wave in the pulse wave measuring apparatus according to the embodiment of the present invention. It is a flowchart which shows a procedure.
[図 11 A]本発明の実施の形態における脈波測定装置の表示部における表示例を示 す図である。  FIG. 11A is a diagram showing a display example on the display unit of the pulse wave measuring device in the embodiment of the present invention.
[図 11B]本発明の実施の形態における脈波測定装置の表示部における他の表示例 を示す図である。  FIG. 11B is a diagram showing another display example on the display unit of the pulse wave measurement device according to the exemplary embodiment of the present invention.
[図 11C]本発明の実施の形態における脈波測定装置の表示部におけるさらに他の表 示例を示す図である。  FIG. 11C is a diagram showing still another display example on the display unit of the pulse wave measuring device in the embodiment of the present invention.
[図 12]本発明の実施の形態における脈波測定装置用手首保持台の手首保持部の 他の構成例を示す断面図である。  FIG. 12 is a cross-sectional view showing another configuration example of the wrist holding portion of the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention.
符号の説明  Explanation of symbols
[0022] 1 脈波測定装置、 2 脈波測定装置用手首保持台、 3 PC、 10 保持台本体、 10 a 上面、 10b, 10c 支柱部、 11 凹部、 12 手首保持部、 13 '溝、 13a 稜線、 13 b 中枢側手首支持面、 13c 末梢側手首支持面、 14A〜； 14C 手首検出部、 15a LED, 15b PD、 15c マイクロスィッチ、 16 軸支部、 17 回動アーム、 17a 回動 軸、 18 脈波検出部、 19a, 19b 面ファスナ、 31 押圧カフ、 32 加圧ポンプ、 33 負圧ポンプ、 34 切替弁、 35 制御回路、 36 圧力センサ、 37 A/Dコンバータ、 38 脈波センサ、 39 マルチプレクサ、 40 A/Dコンバータ、 41 CPU, 42 RO M、 43 RAM, 44 操作部、 45 表示部、 51 左手、 51a 親指、 51b 小指、 52a 手関節前面横紋、 52 手首、 53 前腕、 56 橈骨、 56a 橈骨茎状突起、 57 尺 骨、 57a 尺骨茎状突起、 58 橈骨動脈、 100 被測定部位。  [0022] 1 pulse wave measuring device, 2 wrist holding base for pulse wave measuring device, 3 PC, 10 holding base body, 10a top surface, 10b, 10c strut part, 11 recess, 12 wrist holding part, 13 'groove, 13a Ridge line, 13b Central wrist support surface, 13c Peripheral wrist support surface, 14A ~; 14C Wrist detection unit, 15a LED, 15b PD, 15c Microswitch, 16 pivot support, 17 pivot arm, 17a pivot shaft, 18 Pulse wave detection unit, 19a, 19b surface fastener, 31 pressure cuff, 32 pressure pump, 33 negative pressure pump, 34 switching valve, 35 control circuit, 36 pressure sensor, 37 A / D converter, 38 pulse wave sensor, 39 multiplexer , 40 A / D converter, 41 CPU, 42 ROM, 43 RAM, 44 control unit, 45 display unit, 51 left hand, 51a thumb, 51b little finger, 52a wrist joint striated, 52 wrist, 53 forearm, 56 rib, 56a Radial styloid process, 57 ulna, 57a ulnar styloid process, 58 radial artery, 100 measurement site.
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0023] まず、図 1を参照して、人体の手首近傍の構造を説明するとともに、本明細書にお いて使用する用語の定義を行なう。図 1Aは、人体の左手首近傍を左手の掌側から 見た場合の骨格図であり、図 1Bは、図 1Aにおける IB— IB線に沿った左手首の矢視 断面図である。なお、図 1Bは、左手首の断面を中枢側から末梢側に向けて見た場 合の図である。 [0023] First, referring to FIG. 1, the structure near the wrist of a human body will be described, and terms used in this specification will be defined. Fig. 1A is a skeletal view of the vicinity of the left wrist of the human body when viewed from the palm side of the left hand. Fig. 1B is a view of the cross section of the left wrist as viewed from the central side to the peripheral side.
[0024] 図 1Aおよび図 1Bに示すように、左手 51と前腕 53との間に位置する手首 52の内部 には、橈骨 56と尺骨 57とが位置している。橈骨 56および尺骨 57は、肘から手首 52 にかけて並行して延びている。橈骨 56は、左手 51の親指 51a側に対応する位置の 前腕 53内に位置しており、尺骨 57は、左手 51の小指 51b側に対応する位置の前腕 53内に位置している。手首 52の内部には、橈骨 56および尺骨 57のそれぞれの端 部が位置している。これら橈骨 56および尺骨 57の端部は、それぞれ橈骨茎状突起 5 6aおよび尺骨茎状突起 57aと呼ばれる突起部分を有している。また、橈骨 56と左手 51の掌側に対応する部分の手首 52の皮膚との間には、橈骨動脈 58が位置している 。この橈骨動脈 58は、橈骨 56の延びる方向と概ね同じ方向に向かって延びている。 また、左手 51の掌側に対応する部分の手首 52の皮膚上には、手関節前面横紋 52a が位置している。この手関節前面横紋 52aは、手首 52の周方向に向かって延びてい As shown in FIGS. 1A and 1B, a radius 56 and an ulna 57 are positioned inside a wrist 52 positioned between the left hand 51 and the forearm 53. Ribs 56 and ulna 57, from elbow to wrist 52 Extending in parallel. The radius 56 is located in the forearm 53 at a position corresponding to the thumb 51a side of the left hand 51, and the ulna 57 is located in the forearm 53 at a position corresponding to the little finger 51b side of the left hand 51. Inside the wrist 52, the ends of the radius 56 and the ulna 57 are located. The ends of the radius 56 and the ulna 57 have projection portions called the radius styloid process 56a and the ulnar styloid process 57a, respectively. Further, a radial artery 58 is located between the rib 56 and the skin of the wrist 52 corresponding to the palm side of the left hand 51. The radial artery 58 extends in substantially the same direction as the radius 56 extends. In addition, on the skin of the wrist 52 corresponding to the palm side of the left hand 51, a front joint striated pattern 52a is located. This wrist joint front striated line 52a extends in the circumferential direction of the wrist 52.
[0025] 本明細書においては、図 1Bに示すように、手首 52の橈骨 56が位置する側の部分 を「手首の橈骨側部分」と称し、手首 52の尺骨 57が位置する側の部分を「手首の尺 骨側部分」と称する。また、手首 52の左手 51の掌側に対応する部分と手首 52の左 手 51の甲側に対応する部分との体表面における境界部のうち、手首 52の橈骨側部 分の体表面に位置する部分を「橈骨側端部」と称し、手首 52の尺骨側部分の体表面 に位置する部分を「尺骨側端部」と称する。図中においては、橈骨側端部を符号 P In this specification, as shown in FIG. 1B, the portion of the wrist 52 on the side where the radius 56 is located is referred to as the “radial side portion of the wrist 52” and the portion on the side of the wrist 52 where the ulna 57 is located. This is called “the ulna side of the wrist”. In addition, of the boundary on the body surface between the part corresponding to the palm side of the left hand 51 of the wrist 52 and the part corresponding to the back side of the left hand 51 of the wrist 52, it is located on the body surface of the side part of the rib of the wrist 52 The portion to be referred to as “radial side end” and the portion located on the body surface of the ulna side portion of the wrist 52 is referred to as “ulna side end”. In the figure, the radius side end is designated P
A  A
で、尺骨側端部を符号 Pでそれぞれ示している。なお、上記においては、左手の手  The end of the ulna is indicated by the symbol P. In the above, the left hand
B  B
首を例示して説明を行なったが、右手の手首に関しても橈骨、尺骨、橈骨動脈等の 手首中における配置位置が左右対称になる点を除き同様であることは言うまでもない  Although the description has been given taking the neck as an example, it goes without saying that the same applies to the wrist of the right hand, except that the positions of the radial, ulna, radial artery, etc. in the wrist are symmetrical.
[0026] 以下、本発明の実施の形態について、図を参照して詳細に説明する。なお、以下 に示す実施の形態にお!/、ては、左手の手首を脈波測定のための被測定部位として 利用することができるように構成された脈波測定装置用手首保持台およびこれを備 えた脈波測定装置を例示して説明を行なう。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the embodiment shown below, the wrist holding table for a pulse wave measuring device configured to be able to use the wrist of the left hand as a measurement site for pulse wave measurement, and this An example of a pulse wave measuring apparatus having the above will be described.
[0027] 図 2は、本発明の実施の形態における脈波測定装置用手首保持台の外観構造を 示す図である。また、図 3は、図 2に示す脈波測定装置用手首保持台の手首保持部 の構造を示す斜視図であり、図 4は、図 3に示す IV— IV線に沿った手首保持部の断 面図である。 [0028] まず、図 2を参照して、本実施の形態における脈波測定装置用手首保持台の外観 構造について説明する。図 2に示すように、本実施の形態における脈波測定装置用 手首保持台 2は、テーブル等の載置面に載置される保持台本体 10を有している。保 持台本体 10は、扁平な略直方体形状の外形を有しており、その上面 10aはなだらか に傾斜しており、手前側 (被験者側）が低ぐ奥側に向かうに連れて徐々にその高さ が高くなるように形成されている。保持台本体 10の上面 10aの所定位置には、前腕 を受け入れるための凹部 11が設けられている。凹部 11は、前腕がフィットし易いよう に緩やかな曲面形状を有して!/、る。 [0027] FIG. 2 is a diagram showing an external structure of a wrist holder for a pulse wave measuring device according to an embodiment of the present invention. FIG. 3 is a perspective view showing the structure of the wrist holding part of the wrist holding table for the pulse wave measuring device shown in FIG. 2, and FIG. 4 shows the wrist holding part along the IV-IV line shown in FIG. It is a sectional view. First, with reference to FIG. 2, the external structure of the wrist holder for pulse wave measuring device according to the present embodiment will be described. As shown in FIG. 2, the wrist holding base 2 for pulse wave measuring device in the present embodiment has a holding base body 10 placed on a placement surface such as a table. The holding base body 10 has a flat, substantially rectangular parallelepiped outer shape, and its upper surface 10a is gently inclined so that the front side (subject side) is gradually lowered toward the back side. It is formed to have a high height. A concave portion 11 for receiving the forearm is provided at a predetermined position on the upper surface 10a of the holding base body 10. The recess 11 has a gently curved shape so that the forearm can be easily fitted!
[0029] 保持台本体 10の凹部 11の延びる方向の延長線上には、手首を保持するための手 首保持部 12が位置している。手首保持部 12は、保持台本体 10とは別体の部材にて 構成されており、保持台本体 10に着脱自在に取付けられる。より具体的には、手首 保持部 12は、その側面にガイド溝が設けられることによって保持台本体 10に設けら れた支柱部 10b, 10cのガイドレールに嵌め込み可能に構成されている。なお、手首 保持部 12の具体的な構造については後述することとする。  A wrist holding portion 12 for holding the wrist is positioned on an extension line in the extending direction of the concave portion 11 of the holding base body 10. The wrist holding unit 12 is formed of a member separate from the holding base body 10 and is detachably attached to the holding base body 10. More specifically, the wrist holding portion 12 is configured to be fitted into the guide rails of the column portions 10b and 10c provided in the holding base body 10 by providing a guide groove on a side surface thereof. The specific structure of the wrist holder 12 will be described later.
[0030] 保持台本体 10は、その上面 10aの所定位置に回動アーム 17を有している。具体 的には、保持台本体 10の手首保持部 12が取付けられた位置の左側方に、保持台 本体 10の上面 10aから上方に向かって軸支部 16が突設されており、この軸支部 16 によって回動アーム 17の長手方向の一方端に設けられた回動軸 17aが軸支されて いる。これにより、回動アーム 17は、保持台本体 10に対して回動軸 17aを中心軸とし て図中矢印 R方向に回動することになり、保持台本体 10に手首が載置された状態に おいて手首を保持台本体 10との間で挟み込むことが可能になる。なお、ここで、回動 アーム 17の回動軸 17aは、保持台本体 10に載置された手首の軸方向と平行な方向 に延在するように配置される。  [0030] The holding base body 10 has a rotating arm 17 at a predetermined position on the upper surface 10a thereof. Specifically, a shaft support 16 projects upward from the upper surface 10a of the holding base body 10 on the left side of the position where the wrist holding part 12 of the holding base body 10 is attached. Thus, a rotating shaft 17a provided at one end in the longitudinal direction of the rotating arm 17 is supported. As a result, the pivot arm 17 pivots in the direction of arrow R in the figure with the pivot shaft 17a as the central axis with respect to the holder base body 10, and the wrist is placed on the holder base body 10 In this case, the wrist can be sandwiched between the holding base body 10. Here, the rotation shaft 17a of the rotation arm 17 is arranged so as to extend in a direction parallel to the axial direction of the wrist placed on the holding base body 10.
[0031] 回動アーム 17の下面の所定位置には、脈波検出部 18が設けられている。脈波検 出部 18は、脈波を検出するための脈波センサ 38 (図 5参照）と、この脈波センサ 38を 手首に向けて押圧するための押圧カフ 31 (図 5参照）とを備えている。脈波センサ 38 としては、たとえば静電容量素子を具備した圧力センサや歪抵抗素子を具備した圧 力センサ、生体インピーダンスを計測することが可能なインピーダンス計測センサ等 が利用可能である。また、押圧カフ 31としては、好適には内部に気体や液体が導入 可能な流体袋が利用可能である力 その他にもモータやソレノイド等の機械式ァクチ ユエータを用いることも可能である。 A pulse wave detector 18 is provided at a predetermined position on the lower surface of the rotating arm 17. The pulse wave detection unit 18 includes a pulse wave sensor 38 (see FIG. 5) for detecting a pulse wave and a press cuff 31 (see FIG. 5) for pressing the pulse wave sensor 38 toward the wrist. I have. Examples of the pulse wave sensor 38 include a pressure sensor having a capacitance element, a pressure sensor having a strain resistance element, and an impedance measurement sensor capable of measuring bioimpedance. Is available. Further, as the pressing cuff 31, it is also possible to use a mechanical actuator such as a motor or a solenoid in addition to a force that can preferably use a fluid bag into which gas or liquid can be introduced.
[0032] 回動アーム 17の長手方向の他方端には、面ファスナ 19aが取付けられており、保 持台本体 10の側面の所定位置には、上記面ファスナ 19aに係合する面ファスナ 19b が取付けられている。これら面ファスナ 19a, 19bは、互いに接触することによって係 止可能であり、保持台本体 10に載置された手首を回動アーム 17と保持台本体 10と によって挟み込んだ状態において当該状態を維持する部材として機能する。より具 体的には、面ファスナ 19a, 19bは、保持台本体 10に載置された手首を回動アーム 1 7と保持台本体 10とによって挟み込んだ状態において回動アーム 17が保持台本体 10から遠ざ力、る方向に移動することを制限する部材として機能し、これにより手首に 対する脈波検出部 18の適切な押圧状態を維持するものである。  A surface fastener 19a is attached to the other end in the longitudinal direction of the rotating arm 17, and a surface fastener 19b that engages with the surface fastener 19a is provided at a predetermined position on the side surface of the holding base body 10. Installed. These hook-and-loop fasteners 19a and 19b can be locked by contacting each other, and maintain the state in a state where the wrist placed on the holding base body 10 is sandwiched between the rotating arm 17 and the holding base body 10. Functions as a member. More specifically, the hook-and-loop fasteners 19a and 19b are configured so that the rotating arm 17 has the holding base body 10 in a state where the wrist placed on the holding base body 10 is sandwiched between the rotating arm 17 and the holding base body 10. It functions as a member that restricts the movement of the pulse wave in the direction away from the head, thereby maintaining an appropriate pressing state of the pulse wave detection unit 18 against the wrist.
[0033] なお、本実施の形態における脈波測定装置は、上述の脈波測定装置用手首保持 台 2に加え、外部端末としての PC (personal computer) 3 (図 5参照）を備えている。外 部端末としての PC3は、主として上述の脈波検出部 18によって検出された情報を基 に演算処理を行い、これによつて脈波を得るための装置である。脈波測定装置用手 首保持台 2と PC3とは、たとえば USB (universal serial bus)ケーブル等の接続ケープ ルによって接続される力 S、本実施の形態における脈波測定装置においては、脈波測 定装置用手首保持台 2の前面に設けられた入出力端子に上記接続ケーブルが接続 されることにより、脈波測定装置用手首保持台 2と PC3との結線が行なわれる。  Note that the pulse wave measurement device according to the present embodiment includes a PC (personal computer) 3 (see FIG. 5) as an external terminal in addition to the above-described wrist holder 2 for the pulse wave measurement device. The PC 3 as an external terminal is a device for obtaining a pulse wave by performing arithmetic processing mainly based on the information detected by the pulse wave detection unit 18 described above. The wrist holder 2 for the pulse wave measuring device 2 and the PC 3 are connected with a force S connected by a connection cable such as a USB (universal serial bus) cable, for example. In the pulse wave measuring device according to the present embodiment, the pulse wave measuring device By connecting the connection cable to the input / output terminal provided on the front surface of the wrist holder 2 for the fixed device, the wrist holder 2 for the pulse wave measuring device 2 and the PC 3 are connected.
[0034] 次に、図 3および図 4を参照して、本実施の形態における脈波測定装置用手首保 持台の手首保持部の構造について説明する。図 3に示すように、手首保持部 12は、 略直方体形状の外形を有する箱状の部材にて構成されている。手首保持部 12の上 面には、左手の甲側に対応する部分の手首を受け入れ可能な窪み形状の溝 13が 設けられている。溝 13の表面は、手首保持部 12に手首が載置された状態において 手首の周方向に沿う方向に延びる稜線 13aを境とする 2つの傾斜面を有している。  Next, with reference to FIG. 3 and FIG. 4, the structure of the wrist holding portion of the wrist holding base for pulse wave measuring device in the present embodiment will be described. As shown in FIG. 3, the wrist holding part 12 is composed of a box-shaped member having a substantially rectangular parallelepiped outer shape. On the upper surface of the wrist holding portion 12, there is provided a recess-shaped groove 13 that can receive the wrist corresponding to the back side of the left hand. The surface of the groove 13 has two inclined surfaces with a ridge line 13a extending in a direction along the circumferential direction of the wrist in a state where the wrist is placed on the wrist holding portion 12 as a boundary.
[0035] これら 2つの傾斜面のうち、保持台本体 10の手前側 (被験者側）に位置する傾斜面 は、手首保持部 12に手首が載置された状態において手首の中枢側（すなわち前腕 側）部分が宛がわれることによって当該部分を支持する中枢側手首支持面 13bであ り、保持台本体 10の奥側に位置する傾斜面は、手首保持部 12に手首が載置された 状態において手首の末梢側部分が宛がわれることによってこれを支持する末梢側手 首支持面 13cである。 [0035] Of these two inclined surfaces, the inclined surface located on the front side (subject side) of the holding base body 10 is the center side of the wrist (that is, the forearm) when the wrist is placed on the wrist holding part 12. Side) is a central wrist support surface 13b that supports the portion by being addressed, and the inclined surface located on the back side of the holding base body 10 is a state where the wrist is placed on the wrist holding portion 12 This is a peripheral wrist support surface 13c that supports the peripheral portion of the wrist when the peripheral portion of the wrist is attached.
[0036] それぞれの手首支持面 13b, 13cは、手首保持部 12に手首が載置された状態に おいて手首の軸方向と平行な方向に上記稜線 13aから遠ざかるに連れてその高さが 下方に向けて徐々に低くなるような形状にて形成されている。また、それぞれの手首 支持面 13b, 13cは、手首保持部 12に手首が載置された状態において手首の周方 向に沿う方向に湾曲した形状を有しており、溝 13内に左手の手首を受け入れた状態 において手首の掌側に対応する部分が上方を向きかつ手首の橈骨側端部が手首の 尺骨側端部よりも上方に位置するように手首を傾斜姿勢にて保持可能な形状に形成 されている。より具体的には、溝 13の表面は、手首の軸方向と交差する方向に左右 非対称に（左右の曲率が異なるように)形成されて!/、る。  [0036] Each wrist support surface 13b, 13c is lowered in height as it moves away from the ridge 13a in a direction parallel to the axial direction of the wrist while the wrist is placed on the wrist holding portion 12. It is formed in a shape that gradually becomes lower toward. Each wrist support surface 13b, 13c has a shape curved in the direction along the circumferential direction of the wrist when the wrist is placed on the wrist holding portion 12, and the wrist of the left hand is placed in the groove 13. In a state in which the wrist is held in an inclined position so that the portion corresponding to the palm side of the wrist faces upward and the radius side end of the wrist is positioned above the ulna side end of the wrist Is formed. More specifically, the surface of the groove 13 is formed asymmetrically (so that the left and right curvatures are different) in the direction intersecting the axial direction of the wrist! /.
[0037] 中枢側手首支持面 13bの所定位置には、 2つの手首検出部 14A, 14Bが設けられ ている。一方、末梢側手首支持面 13cの所定位置には、 1つの手首検出部 14Cが設 けられている。これら手首検出部 14A〜； 14Cは、いずれも手首保持部 12内に配置さ れた投光素子としての LED (light-emitting diode) 15aと受光素子としての PD (photo diode) 15bとを含む光学センサにて構成されている。より具体的には、溝 13の表面（ すなわち、中枢側手首支持面 13bおよび末梢側手首支持面 13c)に透光性の窓部 を設け、この透光性の窓部に対応して位置するように手首保持部 12内に LED15a および PD15bが配置されている。  [0037] Two wrist detectors 14A and 14B are provided at predetermined positions on the central wrist support surface 13b. On the other hand, one wrist detector 14C is provided at a predetermined position on the distal wrist support surface 13c. Each of these wrist detection units 14A to 14C is an optical system including an LED (light-emitting diode) 15a as a light emitting element and a PD (photo diode) 15b as a light receiving element disposed in the wrist holding unit 12. It consists of sensors. More specifically, a translucent window is provided on the surface of the groove 13 (that is, the central wrist support surface 13b and the distal wrist support surface 13c), and is positioned corresponding to the translucent window. Thus, the LED 15a and the PD 15b are arranged in the wrist holding part 12.
[0038] 図 5は、本発明の実施の形態における脈波測定装置の機能ブロックを示す図であ る。なお、図 5においては、脈波測定装置の外部端末としての PCについても図示し ている。次に、この図を参照して、本実施の形態における脈波測定装置の機能ブロッ クについて説明する。  FIG. 5 is a diagram showing functional blocks of the pulse wave measurement device according to the embodiment of the present invention. Note that FIG. 5 also shows a PC as an external terminal of the pulse wave measuring device. Next, a functional block of the pulse wave measurement device according to the present embodiment will be described with reference to this figure.
[0039] 図 5に示すように、脈波測定装置 1は、脈波測定装置用手首保持台 2と PC3とによ つて構成されており、それぞれに各種機能ブロックが構成されている。脈波測定装置 用手首保持台 2には、上述のように脈波検出部 18が設けられており、当該脈波検出 部 18には、脈波センサ 38と、この脈波センサ 38が出力する複数の電圧信号を時分 割多重し選択的に導出する信号抽出部としてのマルチプレクサ 39と、脈波センサ 38 を手首に押圧するために加圧調整される押圧カフ 31とが設けられている。 As shown in FIG. 5, the pulse wave measuring device 1 is composed of a pulse wave measuring device wrist holder 2 and a PC 3, each of which has various functional blocks. The wrist holder 2 for the pulse wave measuring device is provided with the pulse wave detector 18 as described above, and the pulse wave detector The unit 18 includes a pulse wave sensor 38, a multiplexer 39 as a signal extraction unit that selectively multiplexes and selectively derives a plurality of voltage signals output from the pulse wave sensor 38, and a pulse wave sensor 38 on the wrist. A pressing cuff 31 that is pressure-adjusted for pressing is provided.
[0040] 脈波測定装置用手首保持台 2の保持台本体 10には、上記の他に、押圧カフ 31の 内圧（以下、カフ圧とも言う。）を昇圧させるための加圧ポンプ 32と、当該内圧を降圧 させるための負圧ポンプ 33と、加圧ポンプ 32と負圧ポンプ 33のいずれかを選択的 に押圧カフ 31に接続するための切替弁 34と、これら加圧ポンプ 32、負圧ポンプ 33 および切替弁 34の動作を制御するための制御回路 35と、押圧カフ 31内の圧力を検 出する圧力センサ 36と、圧力センサ 36から導出されたアナログ信号をデジタル信号 に変換するための A/Dコンバータ 37と、脈波検出部 18から導出されたアナログ信 号をデジタル信号に変換するための A/Dコンバータ 40と、手首検出部 14A〜； 14C を構成する LED15aおよび PD15bとが設けられている。なお、図 5中においては、 L ED15aおよび PD15bを各々 1つずつしか図示していないが、実際には手首検出部 の数（本実施の形態においては 3つ）に対応した数だけ LED15aおよび PD15bが具 備されることになる。 [0040] In addition to the above, the holding base body 10 of the wrist holding base 2 for the pulse wave measuring device includes, in addition to the above, a pressurizing pump 32 for increasing the internal pressure of the pressing cuff 31 (hereinafter also referred to as cuff pressure), A negative pressure pump 33 for reducing the internal pressure, a switching valve 34 for selectively connecting one of the pressure pump 32 and the negative pressure pump 33 to the pressure cuff 31, and the pressure pump 32, negative pressure A control circuit 35 for controlling the operation of the pump 33 and the switching valve 34, a pressure sensor 36 for detecting the pressure in the pressure cuff 31, and an analog signal derived from the pressure sensor 36 for converting the digital signal into a digital signal An A / D converter 37, an A / D converter 40 for converting an analog signal derived from the pulse wave detector 18 into a digital signal, and LEDs 15a and PD15b constituting the wrist detectors 14A to 14C are provided. It has been. In FIG. 5, only one LED 15a and one PD15b are shown, but in actuality, only the number of LEDs 15a and PD15b corresponding to the number of wrist detection units (three in this embodiment). Will be provided.
[0041] PC3は、脈波測定装置 1を集中的に制御するための演算を含む各種演算処理を 実行する演算処理部としての CPU (central processing unit) 41と、脈波測定装置を 制御するためのデータおよびプログラムを記憶する ROM (read only memory) 42お よび RAM (random access memory) 43と、外部から操作可能に設けられて各種情報 を入力するために操作される操作部 44と、脈波測定結果などの各種情報を外部出 力するための LCD (liquid crystal display)などからなる表示部 45とを含む。  [0041] The PC 3 controls a central processing unit (CPU) 41 as an arithmetic processing unit that executes various arithmetic processes including arithmetic operations for centrally controlling the pulse wave measuring device 1, and a pulse wave measuring device. ROM (read only memory) 42 and RAM (random access memory) 43 for storing various data and programs, an operation unit 44 that can be operated from the outside and operated to input various information, and a pulse wave And a display unit 45 consisting of a liquid crystal display (LCD) for externally outputting various information such as measurement results.
[0042] 図 6および図 7は、本発明の実施の形態における脈波測定装置用手首保持台に左 手の手首をセットする手順を示すための概略斜視図である。次に、これらの図を参照 して、本実施の形態における脈波測定装置用手首保持台に左手の手首をセットする 手順について説明する。  FIG. 6 and FIG. 7 are schematic perspective views for illustrating a procedure for setting the wrist of the left hand on the wrist holding base for the pulse wave measuring device according to the embodiment of the present invention. Next, with reference to these drawings, a procedure for setting the wrist of the left hand on the wrist holder for the pulse wave measuring device in the present embodiment will be described.
[0043] まず、脈波測定装置用手首保持台 2をテーブル等の載置面上に載置する。つづい て、図 6に示すように、保持台本体 10の上面 10aに設けられた凹部 11上に肘から手 首 52に掛けての前腕 53を載置する。このとき、左手 51の甲側に対応する部分の手 首 52が手首保持部 12の溝 13に位置決めされて配置されるようにする。より具体的に は、手首 52の手関節前面横紋 52aを目印として、この手関節前面横紋 52aが溝 13よ りも僅かに奥側に位置するようにする。これにより、橈骨動脈の脈動が皮膚上におい て顕著に現れる被測定部位 100が溝 13上に位置するようになる。 [0043] First, the wrist holder 2 for the pulse wave measuring device is placed on a placement surface such as a table. Subsequently, as shown in FIG. 6, a forearm 53 that is hung from the elbow to the wrist 52 is placed on the recess 11 provided on the upper surface 10 a of the holding base body 10. At this time, the hand corresponding to the back side of the left hand 51 The neck 52 is positioned and arranged in the groove 13 of the wrist holder 12. More specifically, the wrist joint front lateral pattern 52a of the wrist 52 is used as a mark, and the wrist joint front lateral pattern 52a is positioned slightly behind the groove 13. As a result, the measurement site 100 where the pulsation of the radial artery appears remarkably on the skin is positioned on the groove 13.
[0044] ここで、本実施の形態における脈波測定装置用手首保持台 2においては、上述の ように左手 51の手首 52の保持に適した状態となるように手首保持部 12の溝 13が形 成されているため、図 6に示すように、保持台本体 10に左手 51の手首 52を載置した 状態において左手 51の掌側に対応する部分の手首 52が上方を向きかつ手首 52の 橈骨側端部 P が手首 52の尺骨側端部 Pよりも上方に位置するように、手首保持部 1 [0044] Here, in the wrist holder 2 for pulse wave measuring device according to the present embodiment, the groove 13 of the wrist holder 12 is formed so as to be in a state suitable for holding the wrist 52 of the left hand 51 as described above. Therefore, as shown in FIG. 6, when the wrist 52 of the left hand 51 is placed on the holding base body 10, the wrist 52 corresponding to the palm side of the left hand 51 faces upward and the wrist 52 Wrist holder 1 so that the radius side end P is positioned above the ulna side end P of the wrist 52
A B  A B
2が手首 52を傾斜姿勢にて保持する。したがって、上述の橈骨動脈の脈動が皮膚上 において顕著に現れる被測定部位 100がほぼ水平な状態に維持されることになる。 そのため、脈波センサ 38のセンサ面と被測定部位 100との平行度を保つことが可能 になり、測定精度の向上に資することとなる。  2 holds wrist 52 in an inclined position. Therefore, the measurement site 100 where the above-described radial artery pulsation appears remarkably on the skin is maintained in a substantially horizontal state. Therefore, the parallelism between the sensor surface of the pulse wave sensor 38 and the measurement site 100 can be maintained, which contributes to improvement in measurement accuracy.
[0045] 次に、図 7に示すように、回動アーム 17を保持台本体 10側に向けて回動させ、保 持台本体 10の手首保持部 12上に載置した手首 52が回動アーム 17と保持台本体 1 0とによって挟み込まれるようにし、回動アーム 17の下面に設けられた脈波検出部 18 を被測定部位 100に接触させる。このとき、上述の位置決めが不十分であれば、凹 部 11に載置した前腕 53および手首 52の位置を微調節し、被測定部位 100に脈波 検出部 18が接触するようにする。つづいて、回動アーム 17に取付けられた面ファス ナ 19aを保持台本体 10に取付けられた面ファスナ 19bに係止させ、回動アーム 17を 保持台本体 10に対して移動不能に固定する。以上により、左手 51の手首 52の脈波 測定装置用手首保持台 2へのセットが完了する。  Next, as shown in FIG. 7, the rotating arm 17 is rotated toward the holding base body 10 side, and the wrist 52 placed on the wrist holding portion 12 of the holding base body 10 is rotated. The pulse wave detection unit 18 provided on the lower surface of the rotating arm 17 is brought into contact with the measurement site 100 so as to be sandwiched between the arm 17 and the holding base body 10. At this time, if the above-mentioned positioning is insufficient, the positions of the forearm 53 and the wrist 52 placed on the concave portion 11 are finely adjusted so that the pulse wave detection unit 18 contacts the measurement site 100. Subsequently, the hook-and-loop fastener 19 a attached to the rotating arm 17 is locked to the hook-and-loop fastener 19 b attached to the holding base body 10, and the rotating arm 17 is fixed to the holding base body 10 so as not to move. This completes the setting of the wrist 52 of the left hand 51 to the pulse wave measuring device wrist holder 2.
[0046] 図 8Aは、上述の装着手順を経ることにより正しい手首の保持姿勢が維持された場 合の手首の保持状態を示す概略斜視図であり、図 8Bは、図 8Aに示す VIIIB—VIII B線に沿った概略断面図である。なお、図 8Bは、左手首の断面を末梢側から中枢側 に向けて見た場合の図である。一方、図 9Aは、正しい手首の保持姿勢となっていな い場合の手首の保持状態の一例を示す概略斜視図であり、図 9Bは、図 9Aに示す X IB— XIB線に沿った概略断面図である。なお、図 9Bは、左手首の断面を末梢側から 中枢側に向けて見た場合の図である。図 9Aおよび図 9Bに示す状態は、正しい手首 の保持状態に比べて手首が被験者側にずれた場合の手首の保持状態を示すもの である。以下においては、これらの図を参照して、手首の保持姿勢と手首検出部との 相関関係につレ、て説明する。 [0046] FIG. 8A is a schematic perspective view showing a wrist holding state when a correct wrist holding posture is maintained through the above-described wearing procedure, and FIG. 8B is a view taken along the line VIIIB-VIII shown in FIG. 8A. It is a schematic sectional drawing in alignment with B line. FIG. 8B is a view when the cross section of the left wrist is viewed from the distal side toward the central side. On the other hand, FIG. 9A is a schematic perspective view showing an example of a wrist holding state when the correct wrist holding posture is not achieved, and FIG. 9B is a schematic cross-sectional view taken along the line XIB-XIB shown in FIG. 9A. FIG. Figure 9B shows the left wrist cross section from the distal side. It is a figure at the time of seeing toward the center side. The state shown in FIG. 9A and FIG. 9B shows the wrist holding state when the wrist is displaced toward the subject as compared to the correct wrist holding state. Hereinafter, the correlation between the wrist holding posture and the wrist detection unit will be described with reference to these drawings.
[0047] 図 8Aおよび図 8Bに示すように、手首 52が正しい保持姿勢で手首保持部 12に載 置された状態においては、左手 51の甲側に対応する部分の手首 52のうちの中枢側 (前腕 53側）の部分が手首保持部 12の溝 13の中枢側手首支持面 13bに宛がわれ た状態となり、左手 51の甲側に対応する部分の手首 52のうちの末梢側（左手 51側） の部分が手首保持部 12の溝 13の末梢側手首支持面 13cに宛がわれた状態となる。 すなわち、左手 51の手首 52を甲側にやや傾けた状態でその姿勢が手首保持部 12 によって保持されることになる。  [0047] As shown in FIGS. 8A and 8B, when the wrist 52 is placed on the wrist holding portion 12 in the correct holding posture, the central side of the wrist 52 corresponding to the back side of the left hand 51 (Forearm 53 side) is in a state where it is directed to the wrist support surface 13b on the central side of the groove 13 of the wrist holder 12, and the distal side (left hand 51) of the wrist 52 corresponding to the back side of the left hand 51 Side) is in a state of being addressed to the distal wrist support surface 13c of the groove 13 of the wrist holder 12. That is, the posture of the left hand 51 is held by the wrist holding unit 12 with the wrist 52 slightly tilted toward the back side.
[0048] この状態において、左手 51の甲側に対応する部分の手首 52の表面は、中枢側手 首支持面 13bおよび末梢側手首支持面 13cに接触し、手首検出部 14A〜； 14Cに対 応して設けられた透光性の窓部がすべて手首 52によって覆われることになる。この 状態においては、図 8Bに示すように、 LED15aから発せられた光が左手 51の手首 5 2の表面において反射し、 PD15bによってその反射光が受光されることになる。した がって、手首検出部 14A〜； 14Cによって左手 51の手首 52が溝 13の表面に正しく宛 がわれていることが検出されることになる。  [0048] In this state, the surface of the wrist 52 corresponding to the back side of the left hand 51 is in contact with the central wrist support surface 13b and the distal wrist support surface 13c, and is connected to the wrist detection units 14A to 14C. All the translucent windows provided accordingly are covered with the wrist 52. In this state, as shown in FIG. 8B, the light emitted from the LED 15a is reflected on the surface of the wrist 52 of the left hand 51, and the reflected light is received by the PD 15b. Therefore, it is detected by the wrist detection units 14A to 14C that the wrist 52 of the left hand 51 is correctly addressed to the surface of the groove 13.
[0049] 一方、図 9Aおよび図 9Bに示すように、正しい手首の保持状態に比べて手首 52が 被験者側にずれた場合の手首 52の保持状態にお!/、ては、左手 51の甲側に対応す る部分の手首 52のうちの中枢側（前腕 53側）の部分が手首保持部 12の溝 13の中枢 側手首支持面 13bに宛がわれた状態となる一方、左手 51の甲側に対応する部分の 手首 52のうちの末梢側（左手 51側）の部分が手首保持部 12の溝 13の末梢側手首 支持面 13cに宛がわれていない状態となる。すなわち、左手 51の手首 52が被験者 側にずれることにより、図 9Bに示すように、末梢側手首支持面 13cと手首 52の末梢 側の部分との間に距離 Dが生じることになる。  [0049] On the other hand, as shown in FIG. 9A and FIG. 9B, the wrist 52 is held when the wrist 52 is displaced toward the subject as compared to the correct wrist holding state! Of the wrist 52 corresponding to the side, the central side (forearm 53 side) of the wrist 52 is in a state of being in contact with the central wrist support surface 13b of the groove 13 of the wrist holder 12, while the back of the left hand 51 The distal side (left hand 51 side) portion of the wrist 52 corresponding to the side is not in contact with the distal wrist support surface 13c of the groove 13 of the wrist holding portion 12. That is, when the wrist 52 of the left hand 51 is displaced toward the subject, a distance D is generated between the distal wrist support surface 13c and the distal portion of the wrist 52 as shown in FIG. 9B.
[0050] この状態においては、手首検出部 14Cにおいて LED15aから発せられた光が散乱 してしまい十分な強度の光が PD15bに到達しなくなる。したがって、手首検出部 14 Cにおいて左手 51の手首 52が溝 13の表面に正しく宛がわれていないことが検出さ れることになる。 [0050] In this state, light emitted from the LED 15a is scattered in the wrist detection unit 14C, and light of sufficient intensity does not reach the PD 15b. Therefore, wrist detection unit 14 In C, it is detected that the wrist 52 of the left hand 51 is not correctly placed on the surface of the groove 13.
[0051] このように、本実施の形態における脈波測定装置用手首保持台 2およびこれを備え た脈波測定装置 1においては、手首検出部 14A〜； 14Cによって左手 51の手首 52が 溝 13の表面に正しく宛がわれているか否かが検出可能となり、左手 51の手首 52の 保持状態が脈波測定に適したものとなっているか否かを判別することが可能になる。 ここで、手首検出部 14A〜； 14Cが手首保持部 12の溝 13の中枢側手首支持面 13b および末梢側手首支持面 13cのそれぞれに 1つ以上設けられているため、脈波測定 に適した手首 52を反らした状態が再現されているかを手首検出部 14A〜； 14Cによつ て確実に検出すること力できるようになる。そのため、当該情報を利用すれば装着を 容易化することができたり、手首 52の姿勢が安定的に保持されるように被験者に促し たりすること力 Sでさる。  [0051] Thus, in the wrist holder 2 for the pulse wave measuring device and the pulse wave measuring device 1 including the same in the present embodiment, the wrist 52 of the left hand 51 is formed into the groove 13 by the wrist detectors 14A to 14C. Thus, it is possible to detect whether the wrist 52 of the left hand 51 is in a state suitable for pulse wave measurement. Here, one or more wrist detection units 14A to 14C are provided on each of the central wrist support surface 13b and the distal wrist support surface 13c of the groove 13 of the wrist holding unit 12, which is suitable for pulse wave measurement. The wrist detection unit 14A to 14C can reliably detect whether the state where the wrist 52 is warped is reproduced. For this reason, it is possible to use the information S to facilitate wearing or to urge the subject to keep the wrist 52 in a stable position.
[0052] 本実施の形態における脈波測定装置 1においては、 PC3の表示部 45に当該手首 検出部 14A〜； 14Cによる左手 51の手首 52の検出結果を表示可能としている。以下 においては、本実施の形態における脈波測定装置 1の処理手順や表示部 45におけ る表示例を具体的に示すことにより、当該手首検出部における検出結果を利用した 場合の一例について説明する。  [0052] In the pulse wave measuring apparatus 1 according to the present embodiment, the detection result of the wrist 52 of the left hand 51 by the wrist detection units 14A to 14C can be displayed on the display unit 45 of the PC 3. In the following, an example of the case where the detection result in the wrist detection unit is used will be described by specifically showing the processing procedure of the pulse wave measurement device 1 and the display example on the display unit 45 in the present embodiment. .
[0053] 図 10は、本発明の実施の形態における脈波測定装置における脈波測定のための 処理手順を示すフローチャートである。また、図 11は、本実施の形態における脈波 測定装置の表示部における表示例を示す図である。次に、これらの図を参照して、 本実施の形態における脈波測定装置の処理手順および表示部における表示例につ いて説明する。なお、図 10に示すフローチャートに従うプログラムとこのプログラム実 行時に参照されるデータは ROM42または RAM43に予めストアされており、 CPU4 1がこのデータを適宜参照しながらプログラムを読出し実行することにより、脈波測定 処理が進行する。  FIG. 10 is a flowchart showing a processing procedure for pulse wave measurement in the pulse wave measurement device according to the embodiment of the present invention. FIG. 11 is a diagram showing a display example on the display unit of the pulse wave measurement device according to the present embodiment. Next, with reference to these drawings, a processing procedure of the pulse wave measurement device according to the present embodiment and a display example on the display unit will be described. Note that the program according to the flowchart shown in FIG. 10 and the data to be referred to at the time of executing the program are stored in the ROM 42 or RAM 43 in advance, and the CPU 41 reads and executes the program while referring to this data as appropriate. The measurement process proceeds.
[0054] 図 10に示すように、電源スィッチ（図示せず）が ONされると、 CPU41は制御回路 3 5に対して負圧ポンプ 33を駆動するように指示する。制御回路 35は、この指示に基 づレ、て切替弁 34を負圧ポンプ 33側に切替えて負圧ポンプ 33を駆動する（ステップ S D o負圧ポンプ 33が駆動されると切替弁 34を介してカフ圧を大気圧よりも十分に低 くするように作用するので、脈波センサ 38は脈波検出部 18内において上方に移動 する。その結果、脈波センサ 38が不用意に突出して誤動作や故障するのを回避でき As shown in FIG. 10, when a power switch (not shown) is turned on, the CPU 41 instructs the control circuit 35 to drive the negative pressure pump 33. Based on this instruction, the control circuit 35 switches the switching valve 34 to the negative pressure pump 33 side and drives the negative pressure pump 33 (step S). Do When the negative pressure pump 33 is driven, the cuff pressure acts to be sufficiently lower than the atmospheric pressure via the switching valve 34, so the pulse wave sensor 38 moves upward in the pulse wave detector 18. To do. As a result, it can be avoided that the pulse wave sensor 38 protrudes carelessly and malfunctions or breaks down.
[0055] 次に、被験者が前述した図 6および図 7に示した装着手順によって脈波検出部 18 を手首に装着する。このとき、 CPU41は手首検出部 14A〜； 14Cとしての LED15a および PD15bからなる光学センサを駆動し、左手 51の手首 52に向けて光を照射し てその反射光が検出されるか否かを監視する（ステップ S2)。 [0055] Next, the subject wears the pulse wave detector 18 on the wrist by the wearing procedure shown in FIGS. 6 and 7 described above. At this time, the CPU 41 drives the optical sensor composed of the LEDs 15a and PD15b as the wrist detection units 14A to 14C, and monitors whether the reflected light is detected by irradiating light toward the wrist 52 of the left hand 51. (Step S2).
[0056] 手首検出部 14A〜14Cのすべてにおいて PD15bによって LED15aから出射され た光の反射光が所定量以上検出されない場合には (ステップ S2で NO)、 CPU41は 手首が手首保持部 12に正しく載置されていないと判断し、 PC3の表示部 45にエラ 一表示を行なうことによって被験者に手首が正しくセットされていないことを報知する（ ステップ S3)。たとえば、図 11Aは、手首検出部 14A〜； 14Cのいずれにおても手首 が検出されなかった場合の表示例であり、手首検出部 14A〜； 14Cに対応するシグナ ノレ SA〜SCのいずれもが非点灯となることより、被験者に対して左手の手首を手首保 持部 12に載置するように促す。また、図 11Bは、手首検出部 14A, 14Bにおいて手 首が検出されたものの手首検出部 14Cにおいて手首が検出されなかった場合の表 示例であり、手首検出部 14A, 14Bに対応するシグナル SA, SBは点灯するものの 手首検出部 14Cに対応するシグナル SCが非点灯となることにより、被験者に対して 手首の保持姿勢を是正するように促す。  [0056] If the reflected light of the light emitted from the LED 15a by the PD 15b is not detected by the PD 15b in all of the wrist detection units 14A to 14C (NO in step S2), the CPU 41 places the wrist correctly on the wrist holding unit 12. It is determined that the wrist is not placed, and an error is displayed on the display unit 45 of the PC 3 to inform the subject that the wrist is not set correctly (step S3). For example, FIG. 11A is a display example in the case where no wrist is detected in any of the wrist detection units 14A to 14C, and any of the wrist detection units 14A to 14C and signal signals SA to SC corresponding to 14C is shown. Since is not lit, the subject is prompted to place the wrist of his left hand on the wrist holder 12. FIG. 11B is a display example when a wrist is detected in the wrist detection units 14A and 14B, but a wrist is not detected in the wrist detection unit 14C, and the signals SA and W corresponding to the wrist detection units 14A and 14B are shown. Although the SB lights up, the signal SC corresponding to the wrist detection unit 14C is turned off, and the subject is urged to correct the wrist holding posture.
[0057] 一方、手首検出部 14A〜14Cのすべてにおいて PD15bによって LED15aから出 射された光の反射光が所定量以上検出された場合には (ステップ S2で YES)、 CPU 41は手首が手首保持部 12に正しく載置されていると判断し、 PC3の表示部 45にお いてその旨を表示する。図 11Cは、手首の正しい保持姿勢が実現され、そのため手 首検出部 14A〜； 14Cのいずれにおても手首が検出された場合の表示例であり、手 首検出部 14A〜； 14Cに対応するシグナル SA〜SCのいずれもが点灯することにより 、被験者に対して脈波測定に移行することが可能であることを報知する。  [0057] On the other hand, if the reflected light of the light emitted from the LED 15a by the PD 15b is detected by the PD 15b in more than a predetermined amount in all the wrist detection units 14A to 14C (YES in step S2), the CPU 41 holds the wrist. Judge that it is correctly placed on part 12, and display that on the display part 45 of PC3. Fig. 11C shows a display example when a wrist is detected in any of the wrist detection units 14A ~; 14C because the correct holding posture of the wrist is realized, and corresponds to the wrist detection units 14A ~; 14C When any of the signals SA to SC is turned on, the subject is informed that it is possible to shift to pulse wave measurement.
[0058] 図 10に示すように、ステップ S2において手首が検出された場合（ステップ S2で YE S)には、スタートボタン（図示せず）が ONされることを待って CPU41は制御回路 35 に対し加圧ポンプ 32を駆動するように指示する。これにより、制御回路 35はこの指示 に基づいて切替弁 34を加圧ポンプ 32側に切替えて加圧ポンプ 32を駆動する（ステ ップ S4)。この動作に伴ってカフ圧は上昇し、脈波センサ 38が手首に向かって下降 して被測定部位である手首の表面に押圧される。 [0058] As shown in FIG. 10, when a wrist is detected in step S2 (YE in step S2). S) waits for the start button (not shown) to be turned on, and the CPU 41 instructs the control circuit 35 to drive the pressurizing pump 32. Accordingly, the control circuit 35 switches the switching valve 34 to the pressurizing pump 32 side based on this instruction and drives the pressurizing pump 32 (step S4). Along with this operation, the cuff pressure rises, and the pulse wave sensor 38 descends toward the wrist and is pressed against the surface of the wrist that is the measurement site.
[0059] 脈波センサ 38が手首の表面に押圧されると、圧力センサ 36からカフ圧情報が導出 され、 A/Dコンバータ 37でデジタル情報に変換されて、 CPU41に与えられる。同 時に、脈波センサ 38から得られる脈波信号もマルチプレクサ 39を介して A/Dコン バータ 40でデジタル情報に変換されて CPU41に与えられる。 CPU41は、これらの デジタル情報に基づ!/、て脈波検出のための条件が満たされたか否力、を判定する（ス テツプ S5)。脈波検出のための条件が満たされた場合には (ステップ S5で YES)、押 圧カフ 31による脈波センサ 38の被測定部位への押圧レベルが脈波検出のための最 適レベルとなるように、加圧ポンプ 32の出力が調整される（ステップ S6)。押圧カフ 31 について最適圧力調整がなされる下で、脈波センサ 38が出力する圧力情報、すな わち橈骨動脈の脈波の波形データは、マルチプレクサ 39および A/Dコンバータ 40 を介して CPU41に転送される（ステップ S 7)。  When the pulse wave sensor 38 is pressed against the surface of the wrist, cuff pressure information is derived from the pressure sensor 36, converted into digital information by the A / D converter 37, and given to the CPU 41. At the same time, the pulse wave signal obtained from the pulse wave sensor 38 is also converted into digital information by the A / D converter 40 via the multiplexer 39 and given to the CPU 41. Based on these digital information, the CPU 41 determines whether or not the conditions for pulse wave detection are satisfied (step S5). If the conditions for pulse wave detection are satisfied (YES in step S5), the pressure level applied to the measurement site of the pulse wave sensor 38 by the pressure cuff 31 becomes the optimum level for pulse wave detection. As described above, the output of the pressurizing pump 32 is adjusted (step S6). Under optimal pressure adjustment for the pressure cuff 31, pressure information output by the pulse wave sensor 38, that is, the waveform data of the radial artery pulse wave, is sent to the CPU 41 via the multiplexer 39 and the A / D converter 40. Transferred (step S7).
[0060] CPU41は、波形データを受理して、受理した波形データに基づき脈波を検出する 。波形データを受理して脈波検出終了の所定条件が成立したと判定するまではステ ップ S7の脈波データの転送処理が繰り返される。なお、受理した波形データに基づ く脈波検出処理は公知の手順に従うので、ここではその詳細は略す。脈波検出終了 の所定条件が成立したときは（ステップ S8で YES)、 CPU41は切替弁 34を介して負 圧ポンプ 33を駆動するように制御する (ステップ S9)。これにより、手首に対する脈波 センサ 38の押圧状態は解かれて、一連の脈波検出処理は終了する。  The CPU 41 receives the waveform data and detects a pulse wave based on the received waveform data. The pulse wave data transfer process in step S7 is repeated until the waveform data is received and it is determined that the predetermined condition for completion of pulse wave detection is satisfied. Since the pulse wave detection process based on the received waveform data follows a known procedure, the details are omitted here. When the predetermined condition for the end of pulse wave detection is satisfied (YES in step S8), the CPU 41 controls to drive the negative pressure pump 33 via the switching valve 34 (step S9). As a result, the pressure state of the pulse wave sensor 38 on the wrist is released, and the series of pulse wave detection processing ends.
[0061] なお、 CPU41は、検出した脈波の情報を表示部 45などを介して外部に出力する。  Note that the CPU 41 outputs the detected pulse wave information to the outside via the display unit 45 or the like.
その際、脈波の情報は、 AI (Augmentation Index)値として出力されるようにしてもよい At this time, pulse wave information may be output as an AI (Augmentation Index) value.
〇 Yes
[0062] 以上において説明したように、本実施の形態の如くの脈波測定装置用手首保持台  [0062] As described above, the wrist holder for the pulse wave measuring device as in the present embodiment
2を備えた脈波測定装置 1とすることにより、装着が容易でかつ手首の姿勢を安定的 に保持することが可能であるとともに脈波の測定精度が低下しない脈波測定装置と すること力 Sでさる。 Equipped with pulse wave measuring device 1 with 2 easy to wear and stable wrist posture It is possible to maintain a pulse wave measuring device that can be held at the same time and does not reduce the accuracy of pulse wave measurement.
[0063] 上述の本発明の一実施の形態においては、手首検出部として LEDおよび PDを含 む光学センサを採用した場合を例示して説明を行なった力 S、これ以外の機構を用い ることも可能である。たとえば、図 12に示すように、接触式のマイクロスィッチ 15cを手 首検出部として利用することも可能である。この場合には、マイクロスィッチ 15cが手 首保持部 12の溝 13に載置された手首に接触するように、溝 13に開口部を設けて当 該開口部からスィッチの先端が溝 13の表面から僅かに突出するように配置させること が必要である。  [0063] In the above-described embodiment of the present invention, the force S described as an example in which an optical sensor including an LED and a PD is employed as the wrist detection unit, and other mechanisms are used. Is also possible. For example, as shown in FIG. 12, a contact-type microswitch 15c can be used as a wrist detection unit. In this case, an opening is provided in the groove 13 so that the microswitch 15c contacts the wrist placed in the groove 13 of the wrist holding portion 12, and the tip of the switch extends from the opening to the surface of the groove 13. It is necessary to arrange it so that it protrudes slightly from.
[0064] また、上述の本発明の一実施の形態においては、手首検出部を手首保持部に 3箇 所設けた場合を例示して説明を行なったが、手首検出部の数は特に制限されるもの ではない。また、その配置位置も適宜変更可能である。  [0064] In the embodiment of the present invention described above, the case where the wrist detection unit is provided at three positions on the wrist holding unit has been described as an example, but the number of wrist detection units is particularly limited. It is not something. Further, the arrangement position can be changed as appropriate.
[0065] また、上述の本発明の一実施の形態においては、手首検出部の検出結果を表示 部にてシグナルで表示させる場合を例示して説明を行なった力 表示部にぉレ、てガ ィダンスの文章を表示させたり、音や音声等によって被験者に報知したりすることも可 能である。  [0065] In the above-described embodiment of the present invention, the force display unit described above exemplifies the case where the detection result of the wrist detection unit is displayed as a signal on the display unit. It is also possible to display the dance text or notify the subject by sound or voice.
[0066] また、上述の本発明の一実施の形態においては、脈波測定前において手首検出 部によって手首が正しい保持姿勢となった場合にのみ脈波測定が可能となるように 構成した場合を例示して説明を行なった力 S、測定中においても手首検出部によって 手首が正し!/、保持姿勢にあるか否かを常時監視し、手首の保持姿勢に問題が生じ た場合に脈波測定を中断して測定に失敗したことを被験者に報知したり、測定は続 行するものの測定結果の信頼性に問題があることを被験者に報知したりするように装 置を構成してもよい。  [0066] Further, in the above-described embodiment of the present invention, the case where the pulse wave measurement can be performed only when the wrist is in the correct holding posture by the wrist detection unit before the pulse wave measurement is performed. Illustrated and explained force S, the wrist detection unit constantly monitors whether the wrist is correct! / Even during measurement, and if there is a problem with the wrist holding posture, the pulse wave The device may be configured to notify the subject that the measurement has failed by interrupting the measurement, or to inform the subject that there is a problem with the reliability of the measurement result, although the measurement continues. .
[0067] さらには、上述の本発明の一実施の形態においては、左手の手首を脈波測定のた めの被測定部位として利用することができるように構成された脈波測定装置用手首 保持台およびこれを備えた脈波測定装置を例示して説明を行なったが、右手の手首 を脈波測定のための被測定部位として利用することができるように構成された脈波測 定装置用手首保持台およびこれを備えた脈波測定装置に本発明を適用することも 当然に可能であるし、左手の手首および右手の手首のいずれをも脈波測定のための 被測定部位として利用することができるように構成された脈波測定装置用手首保持 台およびこれを備えた脈波測定装置に本発明を適用することも可能である。 [0067] Further, in the above-described embodiment of the present invention, the wrist for the pulse wave measurement device configured to be able to use the wrist of the left hand as a measurement site for pulse wave measurement. The table and the pulse wave measuring apparatus provided with the same have been described as an example, but the wrist of the right hand is used for the pulse wave measuring apparatus configured to be used as a measurement site for pulse wave measurement. The present invention can also be applied to a wrist holder and a pulse wave measuring apparatus having the wrist holder. Naturally, it is possible, and a wrist holder for a pulse wave measuring device configured to be able to use both the wrist of the left hand and the wrist of the right hand as a measurement site for pulse wave measurement, and the same are provided. It is also possible to apply the present invention to a pulse wave measuring apparatus.
このように、今回開示した上記各実施の形態はすべての点で例示であって、制限 的なものではない。本発明の技術的範囲は請求の範囲によって画定され、また請求 の範囲の記載と均等の意味および範囲内でのすべての変更を含むものである。  As described above, the embodiments disclosed herein are illustrative in all respects and are not restrictive. The technical scope of the present invention is defined by the claims, and includes all modifications within the meaning and scope equivalent to the description of the claims.

Claims

請求の範囲 The scope of the claims
[1] 載置面に載置される保持台本体と、 [1] A holding base body mounted on the mounting surface;
前記保持台本体の上部に設けられ、手首が載置されることによって手首の姿勢を 保持することが可能な窪み形状の溝を含む手首保持部と、  A wrist holding portion including a recessed groove provided on an upper portion of the holding base body and capable of holding the posture of the wrist by placing the wrist;
前記手首保持部に設けられ、前記溝の表面に手首が宛がわれているか否力、を検 出する手首検出部とを備えた、脈波測定装置用手首保持台。  A wrist holding table for a pulse wave measuring device, comprising: a wrist detecting unit provided at the wrist holding unit and detecting whether or not the wrist is applied to the surface of the groove.
[2] 前記手首検出部は、投光素子および受光素子を含む光学センサからなる、請求の 範囲第 1項に記載の脈波測定装置用手首保持台。  [2] The wrist holding base for a pulse wave measuring device according to claim 1, wherein the wrist detecting unit is composed of an optical sensor including a light projecting element and a light receiving element.
[3] 前記手首検出部は、接触式のマイクロスイッチからなる、請求の範囲第 1項に記載 の脈波測定装置用手首保持台。 [3] The wrist holding base for a pulse wave measuring device according to claim 1, wherein the wrist detecting unit is formed of a contact-type micro switch.
[4] 前記溝は、前記手首保持部に手首が載置された状態において手首の周方向に沿 う方向に延びる稜線を境として互いに前記稜線から手首の軸方向に遠ざかるに連れ て下方に向けて傾斜する 2つの手首支持面を有している、請求の範囲第 1項に記載 の脈波測定装置用手首保持台。 [4] The groove is directed downward as it moves away from the ridge line in the axial direction of the wrist, with a ridge line extending in a direction along the circumferential direction of the wrist in a state where the wrist is placed on the wrist holding portion. 2. The wrist support base for a pulse wave measuring device according to claim 1, which has two wrist support surfaces which are inclined in a vertical direction.
[5] 前記手首検出部は、前記 2つの手首支持面のそれぞれに少なくとも 1つ以上設けら れて!/、る、請求項 4に記載の脈波測定装置用手首保持台。 5. The wrist holding base for a pulse wave measuring device according to claim 4, wherein at least one or more of the wrist detection units are provided on each of the two wrist support surfaces!
[6] 前記溝は、前記手首保持部に手首が載置された状態において手首の掌側に対応 する部分が上方を向きかつ手首の橈骨側端部が手首の尺骨側端部よりも上方に位 置するように手首を傾斜姿勢にて保持可能な形状を有している、請求の範囲第 1項 に記載の脈波測定装置用手首保持台。 [6] The groove has a portion corresponding to the palm side of the wrist facing upward in a state where the wrist is placed on the wrist holding portion, and the radius side end portion of the wrist is located above the ulna side end portion of the wrist. The wrist holding base for a pulse wave measuring device according to claim 1, wherein the wrist holding base has a shape capable of holding the wrist in an inclined posture so as to be positioned.
[7] 脈波を検出する脈波検出部と、 [7] A pulse wave detector for detecting a pulse wave;
請求の範囲第 1項に記載の脈波測定装置用手首保持台とを備えた、脈波測定装 置。  A pulse wave measuring device comprising the wrist holding base for the pulse wave measuring device according to claim 1.
[8] 前記手首検出部によって得られた情報を表示可能な表示部をさらに備えた、請求 の範囲第 7項に記載の脈波測定装置。  8. The pulse wave measurement device according to claim 7, further comprising a display unit capable of displaying information obtained by the wrist detection unit.
PCT/JP2007/066242 2006-09-07 2007-08-22 Wrist holding base for pulse wave measuring instrument and pulse wave measuring instrument having the same WO2008029617A1 (en)

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