JP2007029244A - Sphygmomanometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sphygmomanometer capable of continuously measuring a blood pressure value and stably pressurizing a part of a subject. <P>SOLUTION: The sphygmomanometer relating to this invention is for measuring the blood pressure value by clamping and pressurizing a part of an external ear, a pad for pressing the back side of the pinna is provided, the pad limits the movement of an arm holding a cuff, and the arm is stabilized. To put it concretely, the sphygmomanometer comprises: two cuffs facing each other for clamping and pressurizing a part of the subject; a first arm and a second arm shorter than the first arm for holding one cuff at one end and pressing the held cuff to a part of the subject; the pad for pressing another part of the subject different from the one part of the subject to one end of the first arm; and a pad holding part for holding the pad and connecting the pad and the other end of the first arm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sphygmomanometer 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 and the like from the amount of received infrared light and visible light scattered into the subject. However, in this patient monitor device, the specific configuration of the sphygmomanometer is not shown.

Here, the names of the auricles are based on Non-Patent Documents 1, 2, and 3. Further, the front side of the pinna indicates the side facing the face side of the pinna, and the back side of the pinna indicates the side facing the back of the ear. Further, the upper end portion of the pinna is the end on the parietal side at the boundary between the pinna 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.
JP-A-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 external ear including the external auditory canal is less burdened on the subject than the fingertips and arms even if the cuff is always worn. However, since a part of the subject is pressed using an arm that does not hinder the hearing of the subject, the arm moves greatly when the subject is pressed, and the pressure to be applied to the subject is not correctly applied. .

  An object of the present invention is to provide a sphygmomanometer that can continuously measure a blood pressure value and can stably press a part of a subject.

  The sphygmomanometer according to the present invention is a sphygmomanometer that sandwiches and presses a part of the outer ear to measure a blood pressure value, and includes a pad that presses the back side of the auricle, and the movement of the arm that holds the cuff And the arm is stabilized.

  Specifically, the sphygmomanometer according to the present invention includes two cuffs that face each other and press a part of the subject, and each end holds and holds one of the cuffs. The first arm that holds one of the cuffs on a part of the subject, the second arm that is shorter than the first arm, and the subject different from the part of the subject toward one end of the first arm And a pad holding part that holds the pad and connects the pad and the other end of the first arm.

  Since the two cuffs are pressed with a part of the subject interposed therebetween, the blood pressure value can be measured by pressing the outer ear of the subject. Further, when the two cuffs are pressed across a part of the subject, the pad presses the back side of the auricle, which is another part of the subject, so that the first arm connected to the pad The movement can be restricted. Thereby, two cuffs can press a part of a subject stably. Therefore, it is possible to provide a sphygmomanometer that can continuously measure the blood pressure value and can stably press a part of the subject.

  The pad holding part preferably has a rotation mechanism that rotates the pad around the other end of the first arm in a plane including one ends of the first arm and the second arm.

  Since the pad rotates, the pad can be easily attached and detached. In addition, since the ear ring of the subject can be held between the first arm and the pad, the cuff can be prevented from falling off.

  It is preferable that the rotation mechanism includes a rotary spring that exerts a restoring force in a direction to hold down another part of the subject.

  Since force can always be applied in the direction of pressing the back side of the pinna, the pinna of the subject can be stably held between the first arm and the pad. This prevents the cuff from falling off.

  The rotation mechanism preferably includes a latch mechanism that restricts rotation in a direction away from another part of the subject.

  Since the movement of the pad in the direction in which the pad is detached from the pinna of the subject is restricted, the cuff can be prevented from falling off.

  The pad holding part preferably has a moving mechanism for moving the pad in parallel with a straight line connecting one end and the other end of the first arm.

  Since the pad moves toward the one end of the first arm, the arm can be mounted according to the size of the auricle. Moreover, since the pad can be mounted without moving the first arm, it is possible to easily mount the cuff.

  It is preferable that the moving mechanism includes a translational spring that exerts a restoring force in a direction to hold down another part of the subject.

  Since force can always be applied in the direction of pressing the back side of the pinna, the cuff can be prevented from falling off.

  The movement mechanism preferably includes a latch mechanism that restricts movement in a direction away from the other part of the subject.

  Since the movement of the pad in the direction in which the pad is detached from the pinna of the subject is restricted, the cuff can be prevented from falling off.

  It is preferable that an end portion of the pad is bent toward the one end of the first arm.

  Since the pad can be deformed into the shape of the back side of the auricle, the back side of the auricle can be pressed with a wider surface of the pad.

  It is preferable that the pad includes a fixing mechanism that holds the end portion in a bent state.

  Since the end of the pad can be held in a folded state, the mounting position of the pad can be further stabilized.

  It is preferable that the pad has a substantially triangular cross section in a plane including one ends of the first arm and the second arm.

  In the pad, the surface adjacent to the surface pressing the back side of the subject's auricle can press the occipital region. Thereby, a pad can be stably hold | maintained by the back side of an auricle.

  It is preferable that the pad is curved so that a side for pressing another part of the subject is recessed.

  Since it is curved in accordance with the shape of the back side of the auricle, the back side of the auricle can be pressed with a wider surface of the pad. Thereby, the mounting position of the pad can be further stabilized.

  It is preferable to further include a clamping pad that is disposed on the first arm so as to face the pad and clamps another part of the subject with the pad.

  Since the auricle can be pinched from the back side of the auricle and the front side of the auricle, the pad can be prevented from falling off and the arm can be further stabilized.

  According to the present invention, since the pad that presses the back side of the auricle stabilizes the arm, it is possible to provide a sphygmomanometer capable of continuously measuring a blood pressure value and stably pressing a part of the subject. Is possible.

  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.

  FIG. 1 is a schematic diagram showing a first form of a sphygmomanometer according to the present embodiment. The sphygmomanometer 91 shown in FIG. 1 has two cuffs 13a and 13b that are opposed to each other and press a part 105 of a subject, and one end 31a holds the cuff 13a, and the held cuff 13a is covered. A first arm 11 that presses against a part 105 of the specimen, a second arm 12 that is shorter than the first arm 11, has one end 31 b holding the cuff 13 b, and holds the held cuff 13 b against the part 105 of the subject. The pad 14 that holds the other part 108 of the subject different from the part 105 of the subject toward the direction A toward the one end 31a of the first arm 11, the pad 14 is held, and the pad 14 and the first arm 11 and the other end 32a of the pad holding part 15 connected. Furthermore, the sphygmomanometer 91 is connected to the first arm 11 so as to face the pad 14, and the clamping pad 16 that clamps the other part 108 of the subject with the pad 14, the first arm 11 and the second arm. 12, a connecting portion 21 that changes the distance between the cuffs 13 a and 13 b, an air pump (not shown) that changes the pressure pressed by the cuff 13 a and the cuff 13 b, and a pressure that presses a part 105 of the subject. Pressure detecting means (not shown) for detecting, and pulse wave detecting means (not shown) for detecting the pulse wave of the part 105 of the subject.

  FIG. 1 shows an example in which the tragus 105 is pressed as a part of the subject. A part of the subject is not limited to this, and may be, for example, one of the ear ring 106, the opposite ring 107, the ear ring leg (not shown), or the opposite leg (not shown). Further, the other part of the subject may be any part of the auricle facing the back side of the auricle. In FIG. 1, as an example, the pad 14, as the other part 108 of the subject, presses from the back of the auricle to the depression of the auricle sandwiched between the opposite ring 107 and the auricle 106 from the base of the auricle. It shows how it is.

  Each of the first arm 11 and the second arm 12 has one end 31a, 31b holding one of the cuffs 13a, 13b, and holding one of the held cuffs 13a, 13b to a part 105 of the subject. is there. That is, the first arm 11 has one end 31a holding the cuff 13a and pressing the held cuff 13a on a part 105 of the subject. The second arm 12 has one end 31b holding the cuff 13b and pressing the held cuff 13b against a part 105 of the subject. The first arm 11 and the second arm 12 are preferably capable of holding a part 105 of the subject. Moreover, it is preferable that each end 31a, 31b opens and closes and the opening angle of the 1st arm 11 and the 2nd arm 12 is variable. Moreover, it is preferable that the opening angle of the first arm 11 and the second arm 12 can be fixed at a predetermined angle. The predetermined angle may be constant or variable. Moreover, it is preferable that the 1st arm 11 connected with the pad 14 is the length which contacts the ear ring 106. FIG. Although FIG. 1 shows a rod-shaped arm, the present invention is not limited to this. For example, the one part or all part may curve. The curve is preferably curved in accordance with the front side of the auricle.

  The cuffs 13a and 13b are opposed to each other and are pressed with a part 105 of the subject interposed therebetween. It is preferable that the cuff 13a and the cuff 13b face each other when the part 105 of the subject is pressed. Further, it is preferable that the cuff 13a and the cuff 13b can withstand a pressure enough to stop the pulsation of the part 105 of the object being held. As the cuffs 13a and 13b, for example, bags that expand or contract can be used. For example, the bag body expands and presses a part 105 of the subject. The bag body may be expanded in a direction in which the part 105 of the subject is pressed, or may be expanded in a direction substantially perpendicular to the direction in which the part 105 of the subject is pressed. The expansion or contraction may be by air pressure or by a mechanical actuator such as a piezoelectric element. The cuff 13a and the cuff 13b are not limited to bags that expand or contract. For example, an elastic body may be used. As an elastic body, the thing similar to the below-mentioned pad 14 can be used. Moreover, the shape of the cuff 13a and the cuff 13b is not limited. For example, it can be a sphere, an elliptic sphere, a cylinder, an elliptic cylinder, or a part thereof. Further, the cuff 13a and the cuff 13b may be the same shape and material, but may be different. For example, either the cuff 13a or the cuff 13b may be a bag. Further, either the cuff 13a or the cuff 13b may expand or contract.

  The pad 14 holds the other part 108 of the subject different from the part 105 of the subject toward the one end 31 a of the first arm 11. The other part 108 of the subject is, for example, at least a part of the pinna facing the back side of the pinna and may include the occipital region 109. For example, an elastic body can be used as the pad 14. As the elastic body, for example, rubber, plastic, metal or ceramics, a composite material thereof, or a hybrid composite material thereof can be used. As the composite material, for example, a fiber reinforced composite material using a fiber such as fiber reinforced plastic as a dispersion material can be used. The pad 14 may be constituted by a single object, but may be constituted by two or more members. For example, a deformable bag may be used. The inside of the bag body may be hollow, or may contain a liquid such as water, a solid such as a gel, rubber or resin, or a mixture thereof.

  The pad 14 preferably has a substantially triangular cross section on the surface including the one end 31 a and the other end 32 a of the first arm 11 and the one end 31 b of the second arm 12. The pad 14 shown in FIG. 1 shows a cross section in a plane including the one end 31a and the other end 32a of the first arm 11 and the one end 31b of the second arm 12, and the pad 14 has a substantially triangular shape. As shown in FIG. 1, since the pad 14 is substantially triangular, when the pad 14 is pressed in the direction A, one surface of the pad 14 holds the other part 108 of the subject from the back side of the auricle, The other surface of the pad 14 can hold the back head 109. As described above, when the cross section of the pad 14 is substantially triangular, the pad 14 presses the other part 108 and the occipital region 109 of the subject, so that the mounting position of the pad 14 can be further stabilized. Thereby, since the position of the 1st arm 11 is stabilized, the cuff 13a and the cuff 13b can press the part 105 of a subject stably.

  FIG. 2 is a schematic diagram showing a first form of the pad. The pad 14a shown in FIG. 2 is curved so that the side pressing the other part 108 of the subject shown in FIG. 1 is recessed. That is, it is curved in the direction A that holds down another part of the subject. In FIG. 2, the entire pad 14a is curved, but a part of the pad 14a may be curved. For example, the surface of the pad 14a that holds the other part of the subject may be curved. Since the pad 14a is curved along the shape of the back side of the auricle 101, a wide range on the back side of the auricle 101 can be pressed in the direction A. Thereby, the movement of the pad 14a in the gravity direction G can be prevented. Further, since the pad 14a is pressed in the direction A from the upper end 121 of the auricle to the back side of the concha 110, the movement of the pad 14a in the gravity direction G can be further prevented.

  FIG. 3 is a schematic diagram showing a second form of the pad. The pad 14b shown in FIG. 3 is curved along the shape of the back side of the auricle 101 from the upper end 121 of the auricle to the lower end 122 of the auricle. Since the pad 14b presses the lower end 122 of the auricle in the direction A in addition to the upper end 121 of the auricle, the movement of the pad 14b in the gravity direction G can be further prevented.

  FIG. 4 is a schematic diagram showing a third form of the pad. The pad 14c shown in FIG. 4 has a function of bending the end portion 33 and the end portion 34 in the direction A. The direction A is a direction in which the other part 108 of the subject explained in FIG. As the pad 14c, for example, the support body 41a fixed to the end portion 33 of the pad 14c, the support body 41c fixed to the end portion 34 of the pad 14c, the support body 41a and the support body 41c are connected. A rotating part 42b that connects the support 41b and the support 41c by changing the angle of the support 41a relative to the support 41b. Can change the angle of the support 41c relative to the support 41b. The rotation part 42a and the rotation part 42b may serve as a rotation axis, and the support body 41a and the support body 41c may rotate. Note that either the end 33 or the end 34 may be bent. Since the end portion 33 and the end portion 34 are bent, the pad 14c can be attached in accordance with the shape of the back side of the auricle as shown in the figure. Moreover, since the end portion is bent according to the shape of the back side of the auricle, the pad can be easily attached.

  The pad 14c shown in FIG. 4 preferably includes a fixing mechanism that holds the end portion 33 and the end portion 34 in a bent state. For example, a lock hinge that can fix the angle formed between the support body 41a and the support body 41b or the angle formed between the support body 41c and the support body 41b at a predetermined angle can be used. The fixing may be performed by a friction plate, or may be performed by fitting a convex portion and a concave portion. For example, the thing which the convex part provided in the support body 41a fits into the hole provided in the support body 41b can be used. The predetermined angle is not limited to one type of angle and may be a plurality of angles. Since the pad 14c includes a fixing mechanism, the pad 14c can be easily mounted and the pad mounting position can be stabilized.

  The pad holding unit 15 shown in FIG. 1 holds the pad 14 and connects the pad 14 and the other end 32 a of the first arm 11. The connection between the pad holding portion 15 and the other end 32a of the first arm 11 may be fixed or may be connected via a movable portion including a rotating mechanism or a moving mechanism. The pad 14 may be held by fixing, or may be held via a movable part including a swing mechanism and the like. The pad holding part 15 can use the thing of a rod-shaped body as shown in FIG. 1, for example. The pad holding portion 15 preferably includes a member that can withstand the force of pressing the pad 14. For example, metal, plastic, wood, or a composite material thereof can be used.

  FIG. 5 is a schematic diagram showing a second form of the sphygmomanometer according to the present embodiment. The sphygmomanometer 93 shown in FIG. 5 replaces the pad holding portion 15 shown in FIG. 1 with the first arm 11 within the plane including the one end 31a and the other end 32a of the first arm 11 and the one end 31b of the second arm 12. The pad holding part 15a which has a rotation mechanism which rotates the pad 14 centering on the other end 32a of this is provided. The pad holding unit 15a includes, for example, a support 22 that holds the pad 14 and a rotating unit 23 that rotates the support 22 in the direction A or the direction B. The direction A is a direction in which the other part 108 of the subject is pressed. For example, the direction A can be a direction in which the angle C formed by the first arm 11 and the pad holding portion 15a is reduced. In this case, the angle C is an angle sandwiching the other part 108 of the subject. The direction B is a direction away from the other part 108 of the subject. For example, the angle C formed by the first arm 11 and the support 22 can be increased. Further, the direction B may be a direction opposite to the direction A. For the support 22, for example, a rod-shaped body such as metal or resin can be used. The rotating unit 23 connects a bearing that rotates the support 22 to the other end 32 a of the first arm 11. The rotating unit 23 may connect the support 22 to the other end 32a through a moving mechanism. Since the pad holding part 15a has a rotation mechanism in the direction A or the direction B, the pad 14 and the first arm 11 can sandwich the other part 108 of the subject. Thereby, the sphygmomanometer 93 can prevent the cuff 13a and the cuff 13b from dropping off.

  In the pad holding part 15a shown in FIG. 5, it is preferable that the rotation mechanism includes a rotating spring that exerts a restoring force in the direction A for pressing the other part 108 of the subject. As the spring, for example, a spring that circulates around the rotating shaft of the rotating portion 23, both ends thereof are respectively disposed on the first arm 11 and the support 22, and a restoring force in the direction A can be used. Since the force for rotating the support 22 in the direction A is exerted by the restoring force of the spring, the support 22 can press the pad 14 in the direction A. Thereby, dropping off of the pad 14 can be prevented.

  Furthermore, in the pad holding portion 15a shown in FIG. 5, the rotation mechanism preferably includes a latch mechanism that restricts rotation in the direction B away from the other part 108 of the subject. FIG. 6 is a schematic diagram illustrating an example of a latch mechanism. FIG. 6 is an enlarged view of the latch mechanism, and shows a state where the gear provided on the rotating portion 23 and the support 22 are engaged with each other. The gears of the rotating part 23 are arranged with triangular teeth. Furthermore, the direction B side of each tooth | gear is a right-angled triangle used as a hypotenuse. The support 22 has a convex portion that engages with the teeth of the rotating portion 23. The convex portion has a hypotenuse on the direction A side. The latch mechanism is not limited to this. For example, the shape of the teeth of the rotating unit 23 may be a quadrangle. Moreover, the convex part of the support body may be plural. If the rotation mechanism includes a latch mechanism, the pad holding portion 15a illustrated in FIG. 5 can limit the rotation of the support 22 in the direction B. Thereby, dropping off of the pad 14 can be prevented.

  FIG. 7 is a schematic diagram showing a third embodiment of the sphygmomanometer according to the present embodiment. A blood pressure monitor 94 shown in FIG. 7 includes a pad holding portion 15b having a moving mechanism for moving the pad 14 in the direction A and the direction B, instead of the pad holding portion 15 shown in FIG. Here, in FIG. 7, direction A and direction B are directions on a straight line parallel to a straight line connecting one end 31 a and the other end 32 a of the first arm 11. The direction A is a direction in which the other part 108 of the subject is pressed. For example, the direction can be the direction from the other end 32a of the first arm 11 to the one end 31a. The direction B is a direction away from the other part 108 of the subject. For example, it can be set as the direction from the one end 31a of the 1st arm 11 to the other end 32a. Further, the direction B may be a direction opposite to the direction A. As the pad holding part 15 b, for example, a part provided with a support body 22 that holds the pad 14 and a moving part 24 that moves the support body 22 in the direction A of the one end 31 a of the first arm 11 can be used. The support 22 can be the same as that described with reference to FIG. The moving unit 24 translates between the one end 31a and the other end 32a of the first arm 11, and for example, a slide rail or a rack and pinion can be used. Since the pad 14 can be moved in the direction A or the direction B by the moving mechanism, the cuff 13a and the cuff 13b can be easily attached. Furthermore, the other part 108 of the subject can be pressed with the pad 14 without moving the first arm 11.

  In the pad holding part 15b shown in FIG. 7, it is preferable that the moving mechanism includes a translational spring having a restoring force in the direction A. As the spring, for example, one having both ends attached to the other end 32a of the first arm 11 and the moving part 24 and having a restoring force in a direction extending in the direction A can be used. Since the restoring force that moves the support 22 in the direction A works, the support 22 can press the pad 14 in the direction A. Thereby, dropping off of the pad 14 can be prevented.

  Furthermore, in the pad holding part 15b shown in FIG. 7, the moving mechanism preferably includes a latch mechanism that restricts movement in the direction B away from the other part 108 of the subject. For example, the same latch mechanism as that shown in FIG. 6 can be used. In this case, for example, the gear-like unevenness of the rotating portion 23 shown in FIG. 6 is provided on the rail of the first arm 11, and the convex portion of the support 22 shown in FIG. 6 is provided on the moving portion 24. Can do. If the moving mechanism includes a latch mechanism, the movement of the pad 14 in the direction B in which the pad 14 is detached from the pinna of the subject can be restricted. Thereby, dropping off of the pad 14 can be prevented.

  FIG. 8 is a schematic diagram showing a fourth embodiment of the sphygmomanometer according to the present embodiment. A sphygmomanometer 95 shown in FIG. 8 is curved so as to bypass the ear ring 106 from the front side of the auricle having the other end 32a of the first arm 11 to the back side of the auricle instead of the pad holding portion 15 shown in FIG. A pad holding portion 15c. The connecting portion between the pad holding portion 15c and the first arm 11 may be rotatable or moved like the pad holding portion 15a or the pad holding portion 15b described in FIG. 5 or FIG. You may be able to. Further, it may be able to rotate and move. Since the sphygmomanometer 95 has a shape in which the pad holding portion 15 is matched to the shape of the auricle, the cuff 13a, the cuff 13b, and the pad 14 can be stably held.

  A sandwiching pad 16 shown in FIG. 1 is disposed on the first arm 11 so as to face the pad 14, and sandwiches another part 108 of the subject with the pad 14. The sandwiching pad 16 can be the same as the pad 14. Moreover, you may use what consists of two or more members and uses the thing similar to the pad 14 at the open | released front-end | tip. The tip of the sandwiching pad 16 may be opposed to the pad 14, or a part of the side surface may be opposed to the pad 14. Moreover, it is preferable that the clamping pad 16 presses the other part 108 of the subject that the pad 14 presses from the back side of the pinna from the front side of the pinna. Since the pad 14 and the clamping pad 16 clamp the other part 108 of the subject, the pad 14 can stably hold the back side of the auricle. Further, the pad 14 can be prevented from falling off. Thereby, dropping off of the cuff 13a and the cuff 13b can be prevented. Furthermore, the efficiency with which the cuff 13a and the cuff 13b press the part 105 of the subject can be increased.

  The pressure detecting means (not shown) detects a pressing pressure value that is a pressure at which the cuff 13a and the cuff 13b press the part 105 of the subject. For example, a barometer that detects the pressure in the cuff 13a or the cuff 13b can be used. Further, mechanical energy applied to the front side of the cuff 13a or the cuff 13b 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 what utilizes 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 pulse wave detecting means (not shown) detects the pulse wave of the part 105 of the subject pressed by the cuff 13a and the cuff 13b. For example, it has a light emitting element that emits outgoing light from the cuff 13a to the outside of the cuff 13a, and a light receiving element that receives the reflected light reflected by the part 105 of the subject by the cuff 13a. Is. 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, the light may be scattered by blood vessels included in the part 105 of the subject. Alternatively, it may be light scattered by a fluid such as hemoglobin flowing inside the blood vessel of the part 105 of the subject. 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, a MOS, or the like 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. Since the detection of the pulse wave using light is less affected by external vibration, the pulse wave can be efficiently detected even from a peripheral blood vessel where the pulse wave is weak. Therefore, the pulse wave can be efficiently detected by using the light emitting element and the light receiving element. The pulse wave detection means is not limited to the above, and may be, for example, one that detects a Korotkoff sound of an artery of a part 105 of the subject, or one that detects a pressure pulse by detecting pressure or vibration due to pulsation. .

  The air pump (not shown) changes the pressure of the cuff 13a and the cuff 13b. In other words, the air pump varies the pressing pressure value, which is the pressure at which the cuff 13a and the cuff 13b press a part of the subject. For example, the air pump supplies the air that has been sucked into the cuff 13a and the cuff 13b from the outside to the cuff 13a and the cuff 13b to increase the pressure of the cuff 13a and the cuff 13b, and the air in the cuff 13a and the cuff 13b to the outside. It exhausts and reduces the pressure of the cuff 13a and the cuff 13b. It is preferable that the air pump increases the pressure of the cuff 13a and the cuff 13b to a predetermined pressure at a stretch and decreases the pressure at a constant speed. Further, the pressure of the cuff 13a and the cuff 13b may be increased to a predetermined pressure at a constant speed. The predetermined pressure is a pressure that stops the blood flow in the artery, and is, for example, a pressure that is higher by about 30 mmHg than the maximum blood pressure value of the subject. Furthermore, it is preferable that the air pump starts increasing the pressure of the cuff 13a and the cuff 13b every predetermined time. The predetermined time is a preset time and may be a predetermined time. The predetermined time is preferably variable depending on the subject. Moreover, you may start the increase of the pressure of the cuff 13a and the cuff 13b according to the signal input from the outside.

  The operation of the sphygmomanometer 91 according to this embodiment will be described with reference to FIGS. FIG. 9 is a graph showing a measurement example of a blood pressure value, where (a) shows the time transition of the pressure, and (b) shows the time transition of the pulsation waveform. FIG. 9A shows a periodic internal artery pressure 61 of a part of the subject due to the heartbeat, and a pressing pressure value 62 that is a pressure with which the cuff 13a and the cuff 13b press the part 105 of the subject. . The pulsation waveform 63 shown in FIG. 9B shows the waveform of the pulse wave signal detected by the pulse wave detection means.

  An air pump (not shown) inhales, inflates the cuff 13a and the cuff 13b, and increases the pressure value 62 that presses the part 105 of the subject to a pressure value P0 that stops the blood flow in the artery. The time at this time is T0, and the pulsation waveform 63 is hardly detected at time T0.

  Here, when the cuff 13a and the cuff 13b press the part 105 of the subject, the first arm 11 and the second arm 12 move greatly. However, since the pad 14 presses the back side of the auricle and restricts the movement of the first arm 11, the cuff 13a and the cuff 13b do not fall off the part 105 of the subject and can be pressed stably. Can do.

  The air pump (not shown) starts exhausting from time T0 and gradually decreases the pressing pressure value 62. Blood begins to flow through the subject from time T1 when the pressing pressure value 62 becomes equal to the maximum value of the arterial pressure 61, and a pulsation waveform 63 appears. The pressing pressure value 62 at this time T1 becomes the systolic blood pressure value P1. From time T1, the amplitude of the pulsation waveform 63 gradually increases and becomes maximum at time T2. The pressing pressure value 62 at this time T2 becomes the diastolic blood pressure value P2 of the intra-arterial pressure 61. 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.

  The sphygmomanometer 91 is disposed in the order of the first arm 11, the second arm 12, and the pad 14, but is not limited thereto. FIG. 10 is a schematic diagram showing a fifth embodiment of the sphygmomanometer according to the present embodiment. Unlike the arrangement of the first arm 11, the second arm 12, and the pad 14 shown in FIG. 1, the sphygmomanometer 92 shown in FIG. 10 is arranged in the order of the second arm 12, the first arm 11, and the pad 14. The sphygmomanometers 91, 93, 94, and 95 described above may be arranged in the order of the second arm 12, the first arm 11, and the pad 14 like the sphygmomanometer 92.

  As described above, the sphygmomanometers 91, 92, 93, 94, and 95 according to the present embodiment press the two cuffs 13 a and 13 b with the part 105 of the subject sandwiched therebetween, so that they are applied to the outer ear of the subject. The blood pressure value can be measured by wearing. Further, since the pad 14 holds the auricle, which is another part of the subject, from the back side of the auricle, the cuff 13a and the cuff 13b are prevented from falling off, and the two cuffs 13a, 13b are part of the subject. 105 can be pressed stably. Therefore, it is possible to provide a sphygmomanometer that can continuously measure the blood pressure value and can stably press a part of the subject.

  The present invention can be used as a bone conduction headphone because the arm can be attached to the auricle and a part of the auricle can be stably pressed.

It is a mimetic diagram showing the 1st form of the sphygmomanometer concerning this embodiment. It is a schematic diagram which shows the 1st form of a pad. It is a schematic diagram which shows the 2nd form of a pad. It is a schematic diagram which shows the 3rd form of a pad. It is a schematic diagram which shows the 2nd form of the blood pressure meter which concerns on this embodiment. It is a schematic diagram which shows an example of a latch mechanism. It is a schematic diagram which shows the 3rd form of the blood pressure meter which concerns on this embodiment. It is a schematic diagram which shows the 4th form of the blood pressure meter which concerns on this embodiment. It is a graph which shows the example of a measurement of a blood pressure value, (a) shows the time transition of a pressure, (b) shows the time transition of a pulsation waveform. It is a schematic diagram which shows the 5th form of the blood pressure meter which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 1st arm 12 2nd arm 13 Cuff 14 Pad 15 Pad holding part 16 Clamping pad 21 Connection part 22,41 Support body 23,42 Rotating part 24 Moving part 31 One end 32 Other end 33,34 Pad end part 51 Connection Member 61 Arterial pressure 62 Pressure value 63 Pulsation waveform
91, 92, 93, 94, 95 Sphygmomanometer 101 Auricle 105 Tragus (part of subject)
106 auricle 107 pair of wheels 108 other part of subject 109 occipital head 110 concha 121 concha 121 top of ear 122 bottom end of auricle A direction of pressing other part of subject B other part of subject Direction away from C C Angle between first arm and pad holding part G Gravity direction

Claims (12)

Two cuffs facing each other and pressing across a portion of the subject;
Each end holds one of the cuffs, a first arm holding one of the held cuffs on a part of the subject, and a second arm shorter than the first arm;
A pad for pressing the other part of the subject toward one end of the first arm;
A sphygmomanometer, comprising: a pad holding portion that holds the pad and connects the pad and the other end of the first arm.   2. The pad holding portion includes a rotation mechanism that rotates the pad around the other end of the first arm in a plane including one end of the first arm and the second arm. The sphygmomanometer described in 1.   The sphygmomanometer according to claim 2, wherein the rotation mechanism includes a rotation system spring in which a restoring force acts in a direction of pressing another part of the subject.   The sphygmomanometer according to claim 2, wherein the rotation mechanism includes a latch mechanism that restricts rotation in a direction away from another part of the subject.   5. The sphygmomanometer according to claim 1, wherein the pad holding portion includes a moving mechanism that moves the pad in parallel with a straight line connecting one end and the other end of the first arm.   The sphygmomanometer according to claim 5, wherein the moving mechanism includes a translational spring in which a restoring force acts in a direction of pressing another part of the subject.   The sphygmomanometer according to claim 5 or 6, wherein the moving mechanism includes a latch mechanism that restricts movement in a direction away from another part of the subject.   8. The sphygmomanometer according to claim 1, wherein an end of the pad is bent in a direction toward one end of the first arm.   The sphygmomanometer according to claim 8, wherein the pad includes a fixing mechanism that holds the end portion in a bent state.   10. The sphygmomanometer according to claim 1, wherein the pad has a substantially triangular cross section on a surface including one ends of the first arm and the second arm.   The sphygmomanometer according to any one of claims 1 to 10, wherein the pad is curved so that a side for pressing another part of the subject is recessed. 12. The device according to claim 1, further comprising: a sandwiching pad that is disposed on the first arm so as to face the pad, and sandwiches another part of the subject with the pad. One of the sphygmomanometers.

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