JP4523867B2 - Blood pressure measuring device - Google Patents

Description

  The present invention relates to a blood pressure measurement device that continuously measures blood pressure.

  With the aging of society, dealing with adult lifestyle-related diseases has become a major social issue. It is recognized that collection of long-term blood pressure values is very important, especially for diseases associated with high blood pressure. From such a point of view, a measuring apparatus that continuously measures biological information such as a blood pressure value, a pulse, a pulse wave, an electrocardiogram, a body temperature, or arterial oxygen saturation has been developed.

  As a measurement device that continuously measures biological information, there is a patient monitor device that is always attached to the ear canal (see, for example, Patent Document 1). This apparatus calculates a blood pressure value or the like from the amount of received infrared light or visible light scattered into the body. However, this patient monitor device does not show a specific configuration as a blood pressure measurement device.

Here, the names of the auricles are based on Non-Patent Documents 1, 2, and 3. The front side of the pinna is the side facing the face side of the pinna, and the back side of the pinna is the side facing the occipital side of the pinna. Further, the upper end of the auricle is the end on the parietal side at the boundary between the auricle and the temporal region. The lower end of the auricle is the end on the neck side at the boundary between the auricle and the temporal region.
Japanese Patent Laid-Open No. 9-128203 Sobotta Illustrated Human Anatomy Volume 1 (Translation by Michio Okamoto), p. 126, Medical School, issued October 1, 1996 Sobotta Illustrated Human Anatomy Volume 1 (Translation by Michio Okamoto), p. 127, Medical School, issued October 1, 1996 Body map book (supervised and commentary by Nagao Takahashi), p. 20, Kodansha Co., Ltd., issued on January 29, 2004

  The outer ear including the external auditory canal is suitable for continuous blood pressure measurement because the burden on the subject is less than that of the fingertips and arms even when the outer ear is always worn. When the blood pressure value is measured with the outer ear, the pulse wave of the outer ear is weak, so a pulse wave detection method using a photoelectric method that can clearly grasp the appearance of the pulse wave when the cuff is decompressed is effective. However, since the photoelectric method detects a change in light due to pulsation of peripheral blood vessels on the skin surface as a photoelectric pulse wave, the photoelectric pulse wave may not be accurately detected due to the influence of external light. For example, since external light easily reaches the peripheral blood vessels on the skin surface, light scattered from the skin surface in some cases may be detected as background noise light. Further, the cuff attachment position may move, and external light having a higher intensity than the photoelectric pulse wave may be detected as background noise light.

  On the other hand, the pressure pulse wave method that is frequently used detects the pressure fluctuation on the skin surface where the pulsation of the artery has propagated as noise, so that the pressure pulse wave may not be detected accurately due to the cuff vibration. For example, if the subject is moving by train or car, walking, or doing some work, the vibration of the cuff attached to the subject's outer ear may be detected as noise.

  An object of the present invention is to provide a blood pressure measurement device capable of continuously measuring a stable blood pressure value even when measurement conditions change.

  The blood pressure measurement device according to the present invention has a first cuff, a second cuff, and a third cuff that press the skin surface on both sides of the tragus and the superficial temporal artery in order to solve the above problem. At least one of these three cuffs expands to stop the pulsation of the trabecular peripheral blood vessels and superficial temporal artery and detect the photoelectric pulse wave of the traumatic peripheral blood vessels or the superficial temporal artery pressure pulse wave This makes it possible to perform blood pressure measurement that is resistant to changes in measurement conditions.

  Since it is attached to the tragus and the temporal region, it is possible to continuously measure blood pressure values. Moreover, since the photoelectric pulse wave or the pressure pulse wave is detected, the measurement result of the method corresponding to the measurement condition can be selected from the photoelectric method and the pressure pulse wave method. Furthermore, the first cuff, the second cuff, and the third cuff press the skin surface on the traumatic artery suitable for photoelectric pulse wave detection and the superficial temporal artery suitable for pressure pulse wave detection, respectively. The photoelectric pulse wave and the pressure pulse wave can be detected with high accuracy. Therefore, it is possible to provide a blood pressure measurement device that can continuously measure a stable blood pressure value even if the measurement conditions change.

  Specifically, the blood pressure measurement device according to the present invention includes a first arm and a second arm facing each other, and the first arm and the second arm at one end of each of the first arm and the second arm. A support column connecting the second arm, the other end of the second arm, a mounting member connected to the side facing the first arm, and the other end of the first arm, A first cuff attached to the side facing the second arm, a second cuff attached to the side of the mounting member facing the first arm, and a third cuff attached at a predetermined interval. A cuff, a photoelectric sensor that is disposed inside the first cuff and / or the second cuff, and detects a photoelectric pulse wave; and a pressure sensor that detects an internal pressure and a pressure pulse wave of the third cuff; A blood pressure measuring device comprising: the first cuff, the second cuff, and Serial least said third cuff of the third cuff characterized by expansion or contraction by the intake or exhaust.

  The first cuff presses the back side of the tragus, the second cuff presses the front side of the tragus, and the third cuff presses the skin surface on the superficial temporal artery. Since at least the third cuff expands and presses against the skin surface, the pulsation of the superficial temporal artery, blood vessels farther from the heart than the superficial temporal artery and the peripheral blood vessels of the tragus in the vicinity of the superficial temporal artery can be stopped. it can. Since the photoelectric sensor and the pressure pulse wave sensor are provided and the photoelectric pulse wave or the pressure pulse wave is detected, a measurement result of a method corresponding to the measurement condition can be selected from the photoelectric method and the pressure pulse wave method. Therefore, it is possible to provide a blood pressure measurement device that can continuously measure a stable blood pressure value even if the measurement conditions change.

  Further, the blood pressure measurement device according to the present invention includes the first arm and the second arm facing each other, and the first arm and the second arm at one end of each of the first arm and the second arm. And a support member connected to the other end of the second arm, the side facing the first arm, and the other end of the first arm, the first arm A first cuff attached to the side facing the second arm, a second cuff and a third cuff attached to the side of the mounting member facing the first arm at a predetermined interval; A photoelectric sensor that is disposed inside the first cuff and / or the second cuff and detects a photoelectric pulse wave; and a pressure pulse wave sensor that detects a pressure pulse wave applied to the third cuff; Detecting the internal pressure of the first cuff, the second cuff, or the third cuff A blood pressure measuring device comprising: a sensor, wherein at least one of the first cuff, the second cuff, and the third cuff is expanded or contracted by intake or exhaust, and the internal pressure sensor is the first cuff. One internal pressure that expands or contracts among the one cuff, the second cuff, and the third cuff is detected.

  The first cuff presses the back side of the tragus, the second cuff presses the front side of the tragus, and the third cuff presses the skin surface on the superficial temporal artery. Since at least one of the first cuff, the second cuff, and the third cuff expands and presses the skin surface, the superficial temporal artery, the blood vessel farther from the heart than the superficial temporal artery, and the vicinity of the superficial temporal artery The pulsation of the peripheral blood vessels of the tragus can be stopped. Since the photoelectric sensor and the pressure pulse wave sensor are provided and the photoelectric pulse wave or the pressure pulse wave is detected, a measurement result of a method corresponding to the measurement condition can be selected from the photoelectric method and the pressure pulse wave method. Therefore, it is possible to provide a blood pressure measurement device that can continuously measure a stable blood pressure value even if the measurement conditions change.

  It is preferable to further include a movable part that connects the other end of the second arm and the mounting member.

  Since the mounting member is movable, the second cuff and the third cuff can be mounted at a position suitable for measuring the blood pressure value.

  The movable part preferably has a function of rotating the mounting member in a plane perpendicular to a direction in which the first arm and the second arm face each other.

  Since the position where the third cuff is pressed becomes variable, the third cuff can press the skin surface on the superficial temporal artery suitable for detecting the pressure pulse wave.

  The movable part preferably has a function of adjusting an inclination of the mounting member with respect to the first arm.

  Since the inclination of the mounting member can be adjusted according to the inclination from the tragus to the skin surface on the superficial temporal artery, the second cuff and the third cuff can stably press the skin surface. . In addition, the subject can easily attach the second cuff and the third cuff to a position suitable for pulse wave detection.

  It is preferable that the movable portion adjusts the inclination of the mounting member with respect to the first arm by a ball bearing mechanism.

  Since the mounting member can be tilted in an arbitrary direction, the second cuff and the third cuff can press a position suitable for pulse wave detection. In addition, the subject can easily attach the second cuff and the third cuff to a position suitable for pulse wave detection.

  It is preferable that the movable part has a function of adjusting a distance between the mounting member and the first arm.

  Since the distance between the first cuff, the second cuff, and the third cuff is variable, the arm and the mounting member can be mounted in accordance with the thickness of the tragus. Moreover, since the pressure with which the first cuff, the second cuff, and the third cuff clamp the tragus can be adjusted, the burden on the subject can be reduced.

  The movable part preferably has a function of adjusting a position on the second arm.

  The length from the column to the second cuff and the third cuff can be adjusted according to the size of the subject's tragus, so the second cuff and the third cuff are suitable for pulse wave detection The position can be pressed. Thereby, the 1st cuff, the 2nd cuff, and the 3rd cuff can press the position suitable for detection of a pulse wave stably.

  The column preferably has a function of rotating the first arm and / or the second arm around the column as a central axis.

  Since the position where the second cuff and the third cuff press can be changed with respect to the tragus pressed by the first cuff, the second cuff and the third cuff are suitable for pulse wave detection. The position can be pressed.

  The support column preferably has a function of adjusting a distance between the first arm and the second arm.

  Since the distance between the first cuff, the second cuff, and the third cuff is variable, the arm and the mounting member can be mounted in accordance with the thickness of the tragus. In addition, the cuff can be easily attached.

  It is preferable that at least one of the first cuff, the second cuff, and the third cuff is attached via a swingable mounting mechanism.

  Since the surface to be pressed by the cuff is inclined according to the inclination of the skin surface, the first cuff, the second cuff and the third cuff can stably press the skin surface.

  The mounting mechanism is preferably a ball bearing mechanism.

  Since the surface to be pressed by the cuff is inclined in any direction according to the inclination of the skin surface, the cuff can press the skin surface more stably.

  The first cuff is preferably mounted on the first arm via a cuff position adjusting mechanism that adjusts the position on the first arm.

  Since the length from the support column to the first cuff can be adjusted according to the size of the subject's tragus, the first cuff can press a position suitable for detecting the pulse wave. In addition, the first cuff, the second cuff, and the third cuff can be mounted at a stable position, so that the first cuff, the second cuff, and the third cuff can be prevented from falling off. it can.

  It is preferable that the second cuff and / or the third cuff are attached via a cuff interval adjusting mechanism in which the predetermined interval between the second cuff and the third cuff is variable.

  Since the distance between the second cuff and the third cuff can be adjusted, the third cuff can press the superficial temporal artery at a position suitable for detecting the pressure pulse wave. Thereby, a pressure pulse wave can be detected stably and accurately.

  It is preferable that two of the first cuff, the second cuff, and the third cuff expand or contract by intake or exhaust.

  Since two of the first cuff, the second cuff, and the third cuff are pressed, they can be pressed efficiently. If the two inflated or deflated cuffs are the first and third cuffs, or the second and third cuffs, compress the trabecular peripheral vessels and superficial temporal artery simultaneously with the same pressure. can do. Further, if the two cuffs that expand or contract are the first cuff and the second cuff, they can be pressed from both sides of the tragus, so that the tragus can be pressed efficiently.

  It is preferable that the first cuff, the second cuff, and the third cuff expand or contract by intake or exhaust.

  Since the first cuff, the second cuff, and the third cuff are pressed, the peripheral blood vessel and the superficial temporal artery of the tragus can be efficiently compressed simultaneously with the same pressure.

  It is preferable that the first cuff and the second cuff are disposed substantially opposite to each other.

  Since the first cuff and the second cuff pinch and press the tragus, it is possible to efficiently press the peripheral blood vessel of the tragus. In addition, since the position of the peripheral blood vessel being pressed can be specified, the light receiving surface of the photoelectric sensor can be reduced, and the influence of external light can be reduced. Further, the first cuff and the second cuff can be prevented from falling off.

  The photoelectric sensor is disposed on one of the first cuff and the second cuff, and is disposed on the other of the light emitting element that emits output light, and the first cuff and the second cuff, It is preferable to include a light receiving element that receives scattered light generated by the emitted output light.

  Since the photoelectric pulse wave is detected from the light transmitted while being scattered inside the tragus sandwiched between the first cuff and the second cuff, it is possible to efficiently detect the photoelectric pulse wave of the compressed peripheral blood vessel. it can.

  The photoelectric sensor includes a light emitting element that is disposed in the first cuff or the second cuff and emits output light, and a light receiving element that receives reflected light generated by the emitted output light. preferable.

  Since the photoelectric pulse wave is detected from the light reflected from the skin surface of the tragus, the amount of reflected light received by the photoelectric sensor can be maintained. Thereby, the photoelectric sensor can detect a photoelectric pulse wave stably.

  According to the present invention, since the photoelectric pulse wave of the peripheral blood vessel of the tragus or the pressure pulse wave of the superficial temporal artery can be detected, the blood pressure that can continuously measure a stable blood pressure value even if the measurement conditions change A measuring device can be provided.

  Embodiments of the present invention will be described with reference to the accompanying drawings. The embodiment described below is an example of the configuration of the present invention, and the present invention is not limited to the following embodiment.

(Embodiment 1)
FIG. 1 is a schematic diagram illustrating an example of a blood pressure measurement device according to the first embodiment. The blood pressure measurement device 91 shown in FIG. 1 includes a first arm 11 and a second arm 12 facing each other, and one end 31 and 33 of each of the first arm 11 and the second arm 12. A support column 13 connecting the second arm 12, a mounting member 14 connected to the other end 34 of the second arm 12, a first cuff 15 attached to the other end 32 of the first arm 11, , A second cuff 16 and a third cuff 17 attached to the side of the mounting member 14 facing the first arm 11, and a photoelectric sensor for detecting a photoelectric pulse wave disposed inside the first cuff 15. 18 and a pressure sensor 27 for detecting the internal pressure and pressure pulse wave of the third cuff 17. The mounting member 14 is further connected to the side of the other end 34 facing the first arm 11. The first cuff 15 is further attached to the side of the other end 32 facing the second arm 12.

  The blood pressure measurement device 91 further swings the movable part 21 that connects the other end 34 of the second arm 12 and the mounting member 14, and the first cuff 15, the second cuff 16, and the third cuff 17. Mounting mechanism 23a, 23b, 23c enabling, air pump 42 for changing the internal pressure of the first cuff 15, the second cuff 16 and the third cuff 17, the air pump 42, the first cuff 15, the first cuff 15. An air tube 41 connecting the second cuff 16 and the third cuff 17.

  The first cuff 15 is a cuff attached to the other end 32 of the first arm 11 and on the side facing the second arm 12. Examples of the cuff include a bag body that expands or contracts. When the bag body is expanded, the skin surface of the subject is pressed. The bag body may be expanded in the pressing direction or may be expanded in a direction perpendicular to the pressing direction. The shape of the bag is not limited, and may be, for example, a sphere, an elliptical sphere, a cylinder, an elliptical column, or a partial shape thereof. The bag may be composed of two or more members. For example, you may be comprised with the container which has rigidity, and the expansion-contraction member which covers a part of container. For example, metal, plastic, or wood can be used for the container. The stretchable member may be, for example, a stretchable member or may be stretched by folding the member in a pleated shape. As a material of the elastic member, for example, resin, rubber, cloth or paper can be used. Examples of the resin include polyethylene, polypropylene, polyvinyl chloride, polyvinyl acetate, and copolymers thereof. Examples of the rubber include natural rubber, styrene rubber, butyl rubber, nitrile rubber, chlorobutylene rubber, naobylene rubber, ethylene / propylene rubber, hyperon, acrylic rubber, urethane rubber, silicone rubber, and fluorine rubber. The cloth or paper is preferably airtight, for example, a nonwoven fabric coated with a polymer. Moreover, the material of the expansion / contraction member may transmit light such as silicone resin. In addition, the elastic member is preferably made of a material having elasticity such as silicone resin, natural rubber, butyl rubber or the like. Furthermore, it is preferable that the bag body withstands the pressure that stops the pulsation of the pressed skin surface.

  The first cuff 15 is preferably mounted on the first arm 11 via a cuff position adjusting mechanism 24 that adjusts the position on the first arm 11. The cuff position adjusting mechanism 24 adjusts the position of the first cuff 15 between the one end 31 and the other end 32, for example. As the cuff position adjusting mechanism 24, for example, a rail or a rack and pinion can be used. Since the distance from the support column 13 to the first cuff 15 can be adjusted, the position where the first cuff 15 is pressed toward the trachea side of the tragus or the tip side of the tragus can be varied. As a result, the first cuff 15 can be in a stable position. Therefore, the first cuff 15, the second cuff 16, and the third cuff 15 are placed at positions suitable for the detection of the photoelectric pulse wave and the pressure pulse wave. 17 can be mounted.

  The second cuff 16 and the third cuff 17 are cuffs attached to the side of the mounting member 14 facing the first arm 11 at a predetermined interval. The predetermined interval may be the distance between the second cuff 16 and the third cuff 17, but is not limited thereto. For example, the distance from the center of the second cuff 16 to the center of the third cuff 17 may be used. In this case, the predetermined interval can be, for example, the interval between the tragus and the skin surface on the superficial temporal artery. As the cuffs of the second cuff 16 and the third cuff 17, the same cuffs as described in the first cuff 15 can be used. However, the first cuff 15, the second cuff 16, and the third cuff 17 may be the same size, the same shape, or the same member, but may be different from each other. For example, the third cuff 17 may be larger than the first cuff 15 and the second cuff 16.

  It is preferable that the second cuff 16 and the third cuff 17 are attached via a cuff interval adjusting mechanism (not shown) in which the predetermined interval between the second cuff 16 and the third cuff 17 is variable. Examples of the cuff interval adjusting mechanism include a rail or a rack and pinion. The second cuff 16 or the third cuff 17 may be attached via the cuff interval adjusting mechanism. Since the distance between the second cuff and the third cuff 17 can be adjusted, the third cuff 17 can be compressed even in the superficial temporal artery away from the tragus. As a result, the superficial temporal artery can be pressed at a position suitable for detecting the pressure pulse wave, so that the pressure pulse wave can be detected stably.

  FIG. 2 is a schematic diagram illustrating an example of a portion pressed by the cuff. The first cuff 15 presses the back side of the tragus 101, the second cuff 16 presses the front side of the tragus 101, and the third cuff 17 the skin on the superficial temporal artery 102 in the temporal region 103. Press the surface. The superficial temporal artery 102 is a branch of the external carotid artery and is palpable at the anterior edge of the pinna 104. The position pressed by the first cuff 15 may be on the back side of the tragus 101. For example, as shown in FIG. 2, it may be a base portion of the tragus 101, may be closer to the tip side of the tragus 101 than the base of the tragus 101, or may be ears than the base of the tragus 101. It may be on the road (not shown) side. The position pressed by the second cuff 16 may be on the front side of the tragus 101. As shown in FIG. 2, it may be the base portion of the tragus 101, may be closer to the tip of the tragus 101 than the base of the tragus 101, or the ear canal ( (Not shown) side may be sufficient. The position pressed by the third cuff 17 may be any of the temporal regions where the superficial temporal artery 102 is located. For example, as shown in FIG. 2, the base part of the tragus 101 may be sufficient, and the rear end of a zygomatic arch may be sufficient.

  Further, the third cuff 17 is expanded or contracted by intake or exhaust. That is, the third cuff 17 is expanded by intake air and contracted by exhaust gas. In FIG. 1, the third cuff 17 is connected to the air pump 42 through the air tube 41, expands by the intake air of the air pump 42, and contracts by exhausting the air pump 42. Since the third cuff 17 presses the skin surface on the superficial temporal artery 102, if at least the third cuff 17 compresses the superficial temporal artery 102, the peripheral blood vessels and the superficial side adjacent to the third cuff 17 The pulsation of the peripheral blood vessel farther from the heart than the head artery 102 can be stopped. Further, since it expands by intake and contracts by exhaust, only the third cuff 17 and the second cuff 16 are connected, and the third cuff 17 and the second cuff 16 are substantially the same. It can be pressed with substantially the same pressure at the time.

  Furthermore, it is preferable that a plurality of the first cuff 15, the second cuff 16, and the third cuff 17 expand or contract. If the first cuff 15 or the second cuff 16 and the third cuff 17 are expanded or contracted, they can be pressed at a position suitable for the tragus 101 compression and a position suitable for the compression of the superficial temporal artery 102. . If the first cuff 15 and the second cuff 16 expand or contract, the peripheral blood vessel of the tragus 101 can be efficiently compressed. Further, if the first cuff 15 and the second cuff 16 are expanded or contracted, the tragus 101 can be pressed efficiently because it can be pressed from both sides of the tragus 101. Further, the first cuff 15 and the second cuff 16 can be prevented from falling off. Further, the expansion or contraction is preferably expanded by intake air and contracted by exhaust gas. For example, as shown in FIG. 1, the first cuff 15, the second cuff 16, and the third cuff 17 are connected to the air pump 42 via the air tube 41, and are expanded by the intake air of the air pump 42. However, it may be contracted by exhausting the air pump 42. Since the plurality of cuffs expand or contract by inhalation or exhaust, the inflated cuffs can simultaneously press the skin surface with the same pressure. Thereby, the pressure pulse wave and the photoelectric pulse wave at the same time when the same resistance is applied to the blood flow can be detected. Note that expansion or contraction may be performed by a mechanical actuator such as a piezoelectric element. If two or more cuffs expand or contract, the peripheral blood vessel of the tragus 101 and the superficial temporal artery 102 can be stably compressed, so that the accuracy of the photoelectric pulse wave or pressure pulse wave can be improved. .

  Furthermore, it is preferable that the first cuff 15 and the second cuff 16 are disposed substantially opposite to each other. Furthermore, it is preferable that the surface pressed by the first cuff 15 and the surface pressed by the second cuff 16 face each other. If the first cuff 15 and the second cuff 16 face each other, the first cuff 15 expands toward the second cuff 16, and the second cuff 16 expands toward the first cuff 15. The peripheral blood vessel of the tragus 101 can be efficiently compressed. Further, the first cuff 15 and the second cuff 16 can be prevented from falling off.

  The first arm 11 and the second arm 12 shown in FIG. 1 are a pair of opposing arms. The pair of arms, for example, sandwich the tragus shown in FIG. 2 between the other end 32 of the first arm 11 and the other end 34 of the second arm 12. When sandwiching the tragus, the other end 32 of the first arm 11 may be on the back side of the tragus or may be in the ear canal. When sandwiching the tragus, the other end 32 of the first arm 11 may be on the front side of the tragus or on the temporal region. As the arm, for example, a rod-shaped body made of metal, plastic, wood or the like can be used. Although the shape of a rod-shaped body is not limited, For example, it can be set as a prism, a cylinder, or a cylinder, or some of these. Part or all of the rod-shaped body may be bent, or there may be a portion that is not opposed.

  The support column 13 connects the first arm 11 and the second arm 12 at one end 31 and 33 of each of the first arm 11 and the second arm 12. For example, it is a connecting member that connects one end 31 of the first arm 11 and one end 33 of the second arm 12. For example, the connecting member may be integrated with the first arm 11 and the second arm 12. The connecting member may be the same member as the first arm 11 and the second arm 12, or may be a different member. As the connection member, the same members as the first arm 11 and the second arm 12 can be used. Moreover, it may be composed of a plurality of members. Further, the whole or a part may be bendable or curved.

  Furthermore, it is preferable that the support | pillar 13 has a function to rotate the 1st arm 11 or the 2nd arm 12 centering on the support | pillar 13. Moreover, it is preferable to have the function to rotate the 1st arm 11 and the 2nd arm 12 by making the support | pillar 13 into a central axis. That is, it is preferable that the angle formed between the first arm 11 and the second arm 12 projected on the surface perpendicular to the support column 13 is adjustable. Since the position of the mounting member 14 can be adjusted by changing the angle formed by the first arm 11 and the second arm 12, the second cuff 16 and the third cuff are against the tragus pressed by the first cuff 15. The position pressed by 17 can be moved. For example, when the palpable position of the superficial temporal artery is on the parietal side with respect to the tragus, the other end 34 of the second arm 12 is fixed to the parietal portion while the other end 32 of the first arm 11 is fixed. Can be moved to the side. Thereby, since the position which the 2nd cuff 16 and the 3rd cuff 17 press with respect to the tragus which the 1st cuff 15 presses can be changed, the 2nd cuff 16 and the 3rd cuff 17 can be changed. Can press a position suitable for pulse wave detection.

  Furthermore, the support column 13 preferably has a function of adjusting the distance between the first arm 11 and the second arm 12. For example, it is preferable that the distance between the one end 31 of the first arm 11 connected to the column 13 and the one end 33 of the second arm 12 is variable. In this case, for example, the distance can be made variable because the position of the column 13 to which the first arm 11 or the second arm 12 is connected is movable. Since the first arm 11 and the second arm 12 can be opened and closed, the arm 11, the arm 12, and the mounting member 14 can be mounted in accordance with the thickness of the tragus. In addition, the cuff can be easily attached.

  The mounting member 14 is the other end 34 of the second arm 12 and is connected to the side facing the first arm 11. The side facing the first arm 11 is the first cuff 15 side. The mounting member 14 has a function of holding the second cuff 16 and the third cuff 17. As the mounting member, for example, a plate-like body such as metal, plastic, and wood can be used. The shape of the plate-like body can be, for example, a disc, a square plate, an inclined plate, or a part thereof. The mounting member 14 may be a rod-shaped body. The shape of the rod-shaped body can be, for example, a prism, a cylinder, a cylinder, or a part thereof. Part or all of the plate-like body or rod-like body may be bent.

  The movable portion 21 connects the other end 34 of the second arm 12 and the mounting member 14. The connection may be connected by fixing, or may be connected by a mechanism that rotates or moves. The position where the movable part 21 is connected may be any position between the other end 34 of the second arm 12 and the support column 13. The movable portion 21 preferably has a function of rotating the mounting member 14 in a plane perpendicular to the direction A in which the first arm 11 and the second arm 12 face each other. For example, a rotation mechanism with the direction A as the rotation axis can be used. The direction A may be a direction in which the second cuff 16 and the third cuff 17 are pressed, or may be a longitudinal direction of the support column 13. Since the mounting member 14 rotates in a plane perpendicular to the direction A, the pressing position of the third cuff 17 can be set to the face side. Thereby, the third cuff 17 can be pressed in accordance with the position of the superficial temporal artery 102.

  Furthermore, the movable part 21 preferably has a function of adjusting the inclination of the mounting member 14 relative to the first arm 11. The inclination of the mounting member 14 is an inclination of the surface of the mounting member 14 with respect to the first arm 11, and can be, for example, an inclination with respect to the longitudinal direction of the first arm 11. Further, the inclination of the mounting member 14 may be an inclination with respect to a vertical plane of the support column 13 in the major axis direction. The movable portion 21 is preferably inclined with respect to the longitudinal direction of the first arm 11, for example, like a mounting member 14 ′ shown in FIG. 1. In this case, as the movable portion 21, the movable portion 21 having a bearing mechanism that rotates around the bearing can be used as the connection portion 35 between the movable portion 21 and the mounting member 14. The rotation axis of the bearing may be one axis, two axes, or three or more axes. The axial direction of the bearing may be one direction in a plane perpendicular to the direction A as shown in FIG. If there are two axes, for example, two axes in a plane perpendicular to the direction A may be used. The bearing may be a cylinder, a pin, or a ball. Furthermore, these combinations may be used, such as a combination of two cylinders, a cylinder and a sphere.

  Furthermore, it is preferable that the movable part 21 adjusts the inclination with respect to the 1st arm 11 of the mounting member 14 by a ball bearing mechanism. For example, the movable part 21 having a ball bearing mechanism at the connection part 35 can be used. Since it is a ball bearing mechanism, the mounting member 14 can be tilted in an arbitrary direction. Since the inclination of the mounting member 14 can be adjusted according to the inclination from the tragus to the skin surface on the superficial temporal artery, the second cuff 16 and the third cuff 17 stably press the skin surface. be able to. In addition, the subject can easily attach the second cuff 16 and the third cuff 17 to a position suitable for pulse wave detection.

  Furthermore, the movable portion 21 preferably has a function of adjusting the distance between the mounting member 14 and the first arm 11. For example, as the movable portion 21, one having a moving mechanism that moves the mounting member 14 in the direction A can be used. For example, a screw can be used as the moving mechanism. Since the mounting member 14 moves in the direction A, the distance between the first arm 11 and the mounting member 14 can be adjusted according to the thickness of the tragus. Thereby, the 1st cuff 15, the 2nd cuff 16, and the 3rd cuff 17 can be pressed with suitable pressure. Furthermore, since the pressure with which the first cuff 15, the second cuff 16 and the third cuff 17 pinch the tragus can be adjusted when the blood pressure value is not measured, the burden on the subject can be reduced. it can.

  Furthermore, the movable part 21 preferably has a function of adjusting the position on the second arm 12. For example, the position of the movable part 21 is adjusted between the one end 33 and the other end 34. In this case, a moving mechanism that can move the connection position between the second arm 12 and the movable portion 21 can be used as the movable portion 21. As the moving mechanism, for example, a rail or a rack and pinion can be used. Since the connection position of the movable portion 21 is variable between the one end 33 and the other end 34 of the second arm 12, the distance from the support column 13 to the second cuff 16 and the third cuff 17 is adjusted. Can do. Thereby, the 1st cuff 15, the 2nd cuff 16, and the 3rd cuff 17 can be equipped in the position suitable for detection of a photoelectric pulse wave and a pressure pulse wave.

  The mounting mechanism 23 enables the first cuff 15, the second cuff 16, and the third cuff 17 to swing. The swinging is, for example, changing the direction of the second cuff 16 to 16 '. Since the direction in which the cuff pressing surface is directed can be changed by swinging, the cuff pressing direction can be changed. As the mounting mechanism 23, for example, a bearing mechanism that rotates around a bearing can be used. The bearing may be a cylinder, a pin, or a ball. Further, these may be a combination such as a combination of two cylinders, a cylinder and a sphere. The rotation axis of the bearing may be one axis, two axes, or three or more axes. Furthermore, the mounting mechanism 23 is preferably a ball bearing mechanism. If the first cuff 15, the second cuff 16 and the third cuff 17 are attached via a ball bearing mechanism, the surface to be pressed by the cuff can be tilted in an arbitrary direction. It is possible to efficiently press according to the inclination.

  The photoelectric sensor 18 is disposed inside the first cuff 15 and detects a photoelectric pulse wave. The photoelectric pulse wave is a change in light applied to the skin surface and changes according to the pulsation of peripheral blood vessels on the skin surface. For example, the photoelectric sensor 18 is disposed in the first cuff 15 and includes a light emitting element 25 that emits output light and a light receiving element 26 that receives reflected light generated by the emitted output light. As the light emitting element, for example, an edge emitting laser, a surface emitting laser, or an LED can be used. The characteristics such as the wavelength, amplitude, and phase of the emitted light are not limited. For example, it may be light scattered by blood vessels. Alternatively, the light may be scattered by a fluid such as hemoglobin flowing inside the blood vessel. As the light receiving element, for example, a photodiode such as a silicon photodiode, a photoelectric conducting element such as CdS, a photoelectric tube, a position sensor, a CCD, or a MOS can be used. The characteristics such as the wavelength, amplitude, and phase of the received light are not limited. Further, the light emitting element and the light receiving element may be Doppler radars. Note that all of the photoelectric sensors 18 may be arranged inside the first cuff 15, but some may be arranged outside the first cuff 15. For example, the emission end of the emitted light of the light emitting element 25 may be arranged on the surface pressing the skin surface of the first cuff 15, or the light receiving surface of the light receiving element 26 may be arranged. Since the photoelectric pulse wave is detected from the light reflected on the skin surface of the tragus, the amount of reflected light can be maintained. Thereby, the photoelectric sensor can detect a photoelectric pulse wave stably.

  In FIG. 1, the photoelectric sensor 18 has the light emitting element 25 and the light receiving element 26 disposed on the first cuff 15, but is not limited thereto. For example, the light emitting element 25 and the light receiving element 26 may be disposed on the second cuff 16. Further, in the photoelectric sensor 18, the light emitting element 25 may be disposed in the first cuff 15 and the light receiving element 26 may be disposed in the second cuff 16. In this case, the light receiving element 26 receives scattered light generated by the emitted output light. The scattered light is transmitted light that has passed through the tragus while being scattered inside the tragus. The light emitting element 25 may be disposed in the second cuff 16, and the light receiving element 26 that receives scattered light may be disposed in the first cuff 15. If the light receiving element 26 receives the scattered light, the photoelectric pulse wave of the peripheral blood vessel of the tragus pressed by the first cuff 15 and the second cuff 16 can be efficiently detected.

  The pressure sensor 27 detects the internal pressure and pressure pulse wave of the third cuff 17. For example, it is a barometer that detects the pressure pulse wave from the fluctuation of the atmospheric pressure in the third cuff 17 and detects the pressure obtained by smoothing the fluctuation of the atmospheric pressure such as the pressure pulse wave as the internal pressure of the third cuff 17. From the internal pressure of the third cuff 17, it is possible to detect a pressing pressure value that is a pressure pressed by the third cuff 17.

  The air pump 42 varies the internal pressure of the first cuff 15, the second cuff 16, and the third cuff 17. That is, the pressure with which the first cuff 15 presses the back side of the tragus, the pressure with which the second cuff 16 presses the front side of the tragus, and the pressure with which the third cuff 17 presses the skin surface on the superficial temporal artery. The pressing pressure value is variable. For example, the air pump 42 supplies air sucked from the outside into the air tube 41 to increase the internal pressures of the first cuff 15, the second cuff 16, and the third cuff 17. Is exhausted to the outside to reduce the internal pressure of the first cuff 15, the second cuff 16 and the third cuff 17. The intake or exhaust may be at a constant speed, but the intake and exhaust may have different speeds. For example, the air may be sucked up to a predetermined pressing pressure value and exhausted at a constant speed. Moreover, you may inhale at a fixed speed to a predetermined pressing pressure value. The pressing pressure value is a pressure for stopping the pulsation of the artery, and is, for example, a pressure about 30 mmHg higher than the maximum blood pressure value of the subject. Furthermore, it is preferable that the air pump 42 starts intake at predetermined time intervals. The predetermined time is a preset time and may be a predetermined time. The predetermined time is preferably variable depending on the subject. Inhalation may be started in accordance with a signal input from the outside.

  The air tube 41 is a hollow tube that connects the air pump 42 to the first cuff 15, the second cuff 16, and the third cuff 17. As the hollow tube, for example, a resin such as silicone, rubber, or metal can be used. As the resin or rubber, for example, those exemplified for the first cuff 15 described above may be used. The cross-sectional shape of the hollow tube is not limited, and may be, for example, circular or square. The hollow tube is preferably made of a flexible material such as resin or rubber, and if it is flexible, the burden on the subject when the sphygmomanometer is worn can be reduced.

  The operation of the blood pressure measurement device 91 will be described with reference to FIGS. FIG. 3 is a graph showing a measurement example of a blood pressure value, where (a) shows the time transition of the photoelectric pulse wave, and (b) shows the time transition of the pressing pressure value and the pressure pulse wave. A photoelectric pulse wave 51 shown in FIG. 3A is a photoelectric pulse wave detected by the photoelectric sensor 18 shown in FIG. Also, the pressing pressure value 52 shown in FIG. 3B is the internal pressure of the third cuff 17 detected by the pressure sensor 27 shown in FIG. Further, the pressure pulse wave 53 shown in FIG. 3B is a pressure pulse wave detected by the pressure sensor 27 shown in FIG.

  The air pump 42 starts intake, expands the first cuff 15, the second cuff 16, and the third cuff 17 through the air tube 41, and increases the pressing pressure value 52 until the pressure P0 is reached. Here, since the first cuff 15, the second cuff 16 and the third cuff 17 are connected and the internal pressure is kept equal, they can be simultaneously pressed with the same pressure. Therefore, the skin surface on both sides of the tragus and the superficial temporal artery can be simultaneously pressed with the same pressure. The pressure P0 is a pressure for stopping the pulsation of the peripheral blood vessels of the tragus and the superficial temporal artery, and the time at this time is T0. At time T0, the photoelectric pulse wave 51 is hardly detected, and the pressure pulse wave 53 has a low value. The air pump 42 starts exhausting from the time T0 and decreases the pressing pressure value 52 at a constant speed. At time T1, blood begins to flow into the tragus and the superficial temporal artery. At this time, the photoelectric pulse wave 51 appears and the amplitude of the pressure pulse wave 53 starts to increase. This is when the pressing pressure value 52 at the time T1 becomes substantially equal to the maximum value of the intra-arterial pressure, and becomes the systolic blood pressure value P1. The amplitudes of the photoelectric pulse wave 51 and the pressure pulse wave 53 gradually increase from time T1 and become maximum at time T2. The pressing pressure value 52 at this time T2 becomes the diastolic blood pressure value P2. In this manner, the systolic blood pressure value P1 and the diastolic blood pressure value P2 can be determined and the blood pressure value can be measured. Note that the method of measuring the blood pressure value is not limited to the above.

  In FIG. 1, the first arm 11, the support column 13, the second arm 12, the movable portion 21, and the mounting member 14 are connected to separated members, but may be integrated. For example, the 1st arm 11, the 2nd arm 12, and the support | pillar 13 may be united. Further, the second arm 12, the movable portion 21, and the mounting member 14 may be integrated.

  In addition, the first cuff 15, the second cuff 16 and the third cuff 17 are expanded or contracted, but only the third cuff 17 may be expanded or contracted. The cuff 15 may be expanded or contracted, and the third cuff 17 and the second cuff 16 may be expanded or contracted. Further, the photoelectric sensor 18 is disposed in the first cuff 15, but may be disposed in the second cuff 16, or may be disposed in the first cuff 15 and the second cuff 16. Good.

  Moreover, although the 1st cuff 15, the 2nd cuff 16, and the 3rd cuff 17 are each provided with mounting mechanism 23a, 23b, 23c, it is not limited to this. For example, the first cuff 15, the second cuff 16, and the third cuff 17 may not include the mounting mechanism 23. Further, the first cuff 15, the second cuff 16, or the third cuff 17 may include the mounting mechanism 23. Of the first cuff 15, the second cuff 16, and the third cuff 17, the first cuff 15 and the second cuff 16 may include the mounting mechanism 23, or the first cuff 15 and the second cuff 16 The three cuffs 17 may include the mounting mechanism 23, and the second cuff 16 and the third cuff 17 may include the mounting mechanism 23.

  Moreover, in this embodiment, although the 1st cuff 15, the 2nd cuff 16, and the 3rd cuff 17 expand | swell or shrink | contract, it is not limited to this. At least the third cuff 17 may be inflated to stop the pulsation of the peripheral blood vessels of the tragus suitable for the detection of the electrocardiographic wave, and to stop the pulsation of the superficial temporal artery suitable for the detection of the pressure pulse wave. Therefore, a plurality of cuffs that expand or contract are preferable, but only the third cuff 17 may be used.

  As described above, in the blood pressure measurement device 91 according to this embodiment, the photoelectric sensor 18 detects the photoelectric pulse wave of the peripheral blood vessel of the tragus, and the pressure pulse wave sensor 19 detects the pressure pulse wave of the superficial temporal artery. To do. Photoelectric pulse wave is detected in the peripheral blood vessel suitable for photoelectric pulse wave detection, and pressure pulse wave is detected in the shallow temporal artery suitable for pressure pulse wave detection. It is possible to select a measurement result according to the method. Thereby, a blood pressure value can be measured using the highly accurate pulse wave detected by the method according to the measurement conditions. Therefore, it is possible to provide a blood pressure measurement device that can continuously measure a stable blood pressure value even if the measurement conditions change.

(Embodiment 2)
FIG. 4 is a schematic diagram illustrating an example of a blood pressure measurement device according to the second embodiment. A blood pressure measurement device 92 shown in FIG. 4 replaces the pressure sensor 27 provided in the blood pressure measurement device 91 described in the first embodiment, and a pressure pulse wave sensor 19 that detects a pressure pulse wave inside the third cuff 17. And an internal pressure sensor 20 for detecting the internal pressure of the air tube 41. The blood pressure measuring device 92 can use the same configuration as the blood pressure measuring device 91 described in the first embodiment except for the pressure pulse wave sensor 19 and the internal pressure sensor 20.

  In the present embodiment, the cuff that expands or contracts may be any of the first cuff 15, the second cuff 16, and the third cuff 17, but in FIG. The cuff 17 is configured to expand or contract. The air tube 41 connects the second cuff 16 and the third cuff 17 to the air pump 42, and the air pump 42 changes the internal pressure of the second cuff 16 and the third cuff 17 via the air tube 41. To do.

  The pressure pulse wave sensor 19 detects a pressure pulse wave applied to the third cuff 17. For example, a barometer that detects the atmospheric pressure in the third cuff 17 can be used. Alternatively, mechanical energy applied to the surface of the third cuff 17 may be converted into electric energy. For example, there are a piezoelectric method, an electrostatic induction method, and an electromagnetic induction method. If it is a piezoelectric system, there exists a thing using the displacement of ceramic single-piece | units, such as a bimorph, a monomorph, a unimorph, a laminated type, a Mooney type, a multi Mooney type, a cymbal type, for example.

  The internal pressure sensor 20 is a barometer that detects one internal pressure that expands or contracts among the first cuff 15, the second cuff 16, and the third cuff 17. In the blood pressure measurement device 92, an example is shown in which the second cuff 16 and the third cuff 17 are inflated and the internal pressure of the air tube 41 in which the inside air is kept equal to the second cuff 16 and the third cuff 17 is detected. Has been. The inflating or deflating cuff may be at least one of the first cuff 15, the second cuff 16, and the third cuff 17, and the internal pressure sensor 20 is a flow in which the air pressure is kept equal to that in the inflating or deflating cuff. The internal pressure may be detected from any of the paths. That is, one internal pressure is not necessarily connected directly, and may be an internal pressure of one cuff that expands or contracts by intake or exhaust. As in the first embodiment, it is preferable that a plurality of the first cuff 15, the second cuff 16, and the third cuff 17 are expanded or contracted, and these are expanded by intake or exhaust. Or it is preferable to shrink.

  The operation of the blood pressure measurement device 92 will be described with reference to FIGS. 4 and 3. FIG. 3 is a graph showing a measurement example of a blood pressure value, where (a) shows the time transition of the photoelectric pulse wave, and (b) shows the time transition of the pressing pressure value and the pressure pulse wave. In the second embodiment, the photoelectric pulse wave 51 shown in FIG. 3A is a photoelectric pulse wave detected by the photoelectric sensor 18 shown in FIG. The pressing pressure value 52 shown in FIG. 3B is the internal pressure of the air tube 41 detected by the internal pressure sensor 20 shown in FIG. Further, the pressure pulse wave 53 shown in FIG. 3B is a pressure pulse wave detected by the pressure pulse wave sensor 19 shown in FIG.

  The air pump 42 starts intake, expands the second cuff 16 and the third cuff 17 through the air tube 41, and increases the pressing pressure value 52 until the pressure P0 is reached. The pressure P0 is a pressure for stopping the pulsation of the peripheral blood vessels of the tragus and the superficial temporal artery, and the time at this time is T0. Here, since the internal pressure of the second cuff 16 and the third cuff 17 is kept equal, they can be simultaneously pressed with the same pressure. Therefore, the surface of the skin on the front side of the tragus and the superficial temporal artery can be simultaneously pressed with the same pressure. After time T0, it is the same as that in the first embodiment.

  As described above, the blood pressure measurement device 92 includes the tragus suitable for the detection of the photoelectric pulse wave and the skin surface on the superficial temporal artery suitable for the detection of the pressure pulse wave with the first cuff 15 and the first cuff 15. At least one of the second cuff 16 and the third cuff 17 is pressed, and the blood pressure value can be measured. Photoelectric pulse wave is detected in the peripheral blood vessel suitable for photoelectric pulse wave detection, and pressure pulse wave is detected in the shallow temporal artery suitable for pressure pulse wave detection. It is possible to select a measurement result according to the method. Thereby, a blood pressure value can be measured using the highly accurate pulse wave detected by the method according to the measurement conditions. Therefore, it is possible to provide a blood pressure measurement device that can continuously measure a stable blood pressure value even if the measurement conditions change. Furthermore, the blood pressure measuring device 92 is configured to increase or decrease one of the first cuff 15, the second cuff 16, and the third cuff 17 by inhalation or exhaust, and the internal pressure sensor 20 Therefore, it is possible to select a cuff that expands or contracts according to the mode of use. Further, since the internal pressure sensor 20 can be arranged away from the tragus, the load on the tragus that holds the first cuff 15, the second cuff 16, and the third cuff 17 can be reduced. Therefore, it is possible to provide a blood pressure measurement device that can reduce the burden on the subject and can continuously measure a stable blood pressure value even when the measurement conditions change.

  Since the present invention includes a cuff that presses the surface of the skin on the tragus and the superficial temporal artery, the present invention is not limited to blood pressure values, but can be used for measurement values of other biological information such as pulse wave, electrocardiogram, and body temperature. Can do. Furthermore, it can also be used for cosmetic purposes, such as measuring the moisture content of the skin and measuring the amount of secreted oil.

1 is a schematic diagram illustrating an example of a blood pressure measurement device according to Embodiment 1. FIG. It is a schematic diagram which shows an example of the site | part which a cuff presses. It is a graph which shows the measurement example of a blood pressure value, (a) shows the time transition of a photoelectric pulse wave, (b) shows the time transition of a pressing pressure value and a pressure pulse wave. 6 is a schematic diagram illustrating an example of a blood pressure measurement device according to Embodiment 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 1st arm 12 2nd arm 13 Support | pillar 14 Mounting member 15 1st cuff 16 2nd cuff 17 3rd cuff 18 Photoelectric sensor 19 Pressure pulse wave sensor 20 Internal pressure sensor 21 Movable part 23 Mounting mechanism
24 Cuff position adjusting mechanism 25 Light emitting element 26 Light receiving element 27 Pressure sensor 31 One end of first arm 32 Other end of first arm 33 One end of second arm 34 Other end of second arm 35 Movable portion and mounting member Connection part with
41 Air Tube 42 Air Pump 51 Photoelectric Pulse Wave 52 Pressing Pressure Value (Internal Pressure of Third Cuff)
53 Pressure Pulse Wave 91, 92 Blood Pressure Measurement Device 101 Tragus 102 Superficial Temporary Artery
103 Side A A Direction of arms facing each other

Claims (19)

Opposing first and second arms;
A strut connecting the first arm and the second arm at one end of each of the first arm and the second arm;
A mounting member connected to the other end of the second arm and facing the first arm;
A first cuff attached to the other end of the first arm and facing the second arm;
A second cuff and a third cuff attached to the side of the mounting member facing the first arm at a predetermined interval;
A photoelectric sensor that is arranged inside the first cuff and / or the second cuff and detects a photoelectric pulse wave;
A pressure sensor for detecting an internal pressure and a pressure pulse wave of the third cuff,
A blood pressure measuring device, wherein at least the third cuff among the first cuff, the second cuff, and the third cuff expands or contracts by inhalation or exhaust. Opposing first and second arms;
A strut connecting the first arm and the second arm at one end of each of the first arm and the second arm;
A mounting member connected to the other end of the second arm and facing the first arm;
A first cuff attached to the other end of the first arm and facing the second arm;
A second cuff and a third cuff attached to the side of the mounting member facing the first arm at a predetermined interval;
A photoelectric sensor that is arranged inside the first cuff and / or the second cuff and detects a photoelectric pulse wave;
A pressure pulse wave sensor for detecting a pressure pulse wave applied to the third cuff;
An internal pressure sensor that detects an internal pressure of the first cuff, the second cuff, or the third cuff, and a blood pressure measurement device comprising:
At least one of the first cuff, the second cuff, and the third cuff is expanded or contracted by intake or exhaust,
The blood pressure measuring device, wherein the internal pressure sensor detects one internal pressure that expands or contracts among the first cuff, the second cuff, and the third cuff.   The blood pressure measurement device according to claim 1, further comprising a movable portion that connects the other end of the second arm and the mounting member.   The blood pressure measuring device according to claim 3, wherein the movable part has a function of rotating the mounting member in a plane perpendicular to a direction in which the first arm and the second arm face each other. .   The blood pressure measurement device according to claim 3 or 4, wherein the movable portion has a function of adjusting an inclination of the mounting member with respect to the first arm.   6. The blood pressure measurement device according to claim 3, wherein the movable portion adjusts an inclination of the mounting member with respect to the first arm by a ball bearing mechanism.   The blood pressure measuring device according to any one of claims 3 to 6, wherein the movable portion has a function of adjusting an interval between the mounting member and the first arm.   The blood pressure measuring device according to any one of claims 3 to 7, wherein the movable portion has a function of adjusting a position on the second arm.   9. The blood pressure measurement device according to claim 1, wherein the support column has a function of rotating the first arm and / or the second arm about the support column as a central axis.   10. The blood pressure measurement device according to claim 1, wherein the support column has a function of adjusting an interval between the first arm and the second arm.   The at least one of said 1st cuff, said 2nd cuff, and said 3rd cuff is attached via the mounting | wearing mechanism which can be swung, The Claim 1-10 characterized by the above-mentioned. Any blood pressure measuring device.   The blood pressure measurement device according to claim 11, wherein the mounting mechanism is a ball bearing mechanism.   The said 1st cuff is attached on said 1st arm through the cuff position adjustment mechanism which adjusts the position on said 1st arm, Any one of Claim 1 to 12 characterized by the above-mentioned. Blood pressure measuring device.   The second cuff and / or the third cuff are attached via a cuff interval adjusting mechanism in which the predetermined interval between the second cuff and the third cuff is variable. Item 14. The blood pressure measurement device according to any one of items 1 to 13.   The blood pressure measurement device according to any one of claims 1 to 14, wherein two of the first cuff, the second cuff, and the third cuff are expanded or contracted by intake or exhaust.   The blood pressure measurement device according to any one of claims 1 to 14, wherein the first cuff, the second cuff, and the third cuff are expanded or contracted by intake or exhaust.   The blood pressure measurement device according to any one of claims 1 to 16, wherein the first cuff and the second cuff are disposed substantially opposite to each other.   The photoelectric sensor is disposed on one of the first cuff and the second cuff, and is disposed on the other of the light emitting element that emits output light, and the first cuff and the second cuff, The blood pressure measurement device according to claim 1, further comprising: a light receiving element that receives scattered light generated by the emitted output light. The photoelectric sensor includes a light emitting element that is disposed in the first cuff or the second cuff and emits output light, and a light receiving element that receives reflected light generated by the emitted output light. The blood pressure measurement device according to any one of claims 1 to 17,

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