JP3363261B2 - Sphygmomanometer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic sphygmomanometer for measuring blood pressure based on arterial pressure information of the upper arm, wrist, finger and the like.

[0002]

2. Description of the Related Art For example, in a sphygmomanometer measured at the wrist, the blood pressure is measured using arterial pressure information. Therefore, if the measured wrist position is higher than the heart position, the blood pressure value is low, and if it is lower than the heart position, the blood pressure value is lower. Is judged to be high. Therefore, it is necessary to measure the blood pressure by matching the height of the wrist position to be measured with the height of the heart, which is a major variable factor in managing daily blood pressure change.

Japanese Patent Application Laid-Open No. 5-200003 discloses a blood pressure measurement in which the wrist position to be measured and the heart height position are combined. This is provided with a light emitting part that emits light horizontally to either the cuff band worn on the wrist or the heart position of the human body, and the light receiving part is provided on the other side, and when the light from the light emitting part is received by the light receiving part, the correct measurement position is obtained. It is supposed to inform you that there is.

[0004]

By the way, the one disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 5-200003 is provided with a light emitting portion and a light receiving portion for electrical alignment, which makes the structure complicated and There is a problem that the cost becomes high and a failure or the like is likely to occur. In addition, there is a problem in that the structure of horizontally emitting light from the light emitting portion is structurally complicated.

The present invention has been made in view of the above problems, and an object of the present invention is to reduce the variation in the height of the blood pressure measurement site with respect to the height position of the heart to change the daily blood pressure value. Can be accurately managed, and the angle of the measurement site can be measured with a simple mechanical structure so that the measurement site can be adjusted to the height of the heart. To provide the total.

[0006]

In order to achieve the above object, the sphygmomanometer of the present invention is provided with a sphygmomanometer attached to a blood pressure measurement site such as an upper arm, a wrist, or a finger. An inclination angle measuring device for measuring the angle is provided,
This inclination angle measuring device has a movable structure that always keeps the same vertical posture even if the inclination angle of the measurement portion changes, and the one that always keeps the same posture in the vertical direction is used as a reference. It is characterized in that the angle of inclination is displayed.

Further, the tilt angle measuring device having a movable structure which always maintains the same vertical posture is a rotatable pendulum, and a mark which can be visually observed at a predetermined angle position with respect to the vertical direction of the pendulum is provided. It is also preferable that it is provided. It is also preferable that the pendulum mark can be seen substantially in the center of the window of the human body mounting structure when the human body mounting structure is inclined at a predetermined angle.

The predetermined angle is an angle close to the angle formed by the upper surface of the desk and the extension line from the elbow of the subject to the wrist on the desk when the blood pressure is measured on the desk in a normal state. It is also preferable to be characterized. It is also preferable that a mark is provided on the fixed portion side so as to face the mark of the rotatable pendulum, and the inclination angle of the human body mounting structure portion can be recognized by the relative position of these marks. .

Further, it is preferable that a plurality of scale lines are provided on one or both of the pendulum side and the window side. Furthermore, it is also preferable that the tilt angle measuring device having a movable structure that always keeps the same vertical posture is a floating body that floats in the liquid, and that the inner surface of the storage body for storing the liquid is an arc surface. .

It is also preferable that the inclination angle measuring device is arranged at a position corresponding to substantially the center of the upper surface of the human body mounting structure when the human body mounting structure is properly mounted on the human body.

[0011]

According to the above construction, the inclination angle of the measurement site for measuring blood pressure can be measured and the measurement site can be adjusted to the height of the heart, and daily blood pressure change can be managed more accurately.
At this time, the tilt angle measuring device has a movable structure that always maintains the same vertical posture even if the tilt angle of the measurement site changes, that is, it has a rotatable pendulum and a floating body floating in the liquid, By displaying the tilt angle of the measurement site based on the one that always maintains the same posture with respect to the vertical direction, the tilt angle of the measurement site can be measured with a simple mechanical structure to determine the height of the heart. They can be combined, and the cost can be reduced or the number of failures can be reduced.

[0012]

EXAMPLE An example of the present invention will be described below with a sphygmomanometer for measuring blood pressure in the wrist. As shown in FIG. 1 (a), it is important for the person to be measured 1 to measure the blood pressure by matching the height position of the compression band 2 wrapped around the wrist with the height position of the heart 3, and for this reason, in general, An arm pillow 6 which holds a wrist 5 at the height of the heart 3 while sitting on a chair 5 at the same height on a desk 4 at the same height.
It is necessary to apply blood pressure near the elbow and measure blood pressure in the correct posture. However, the height h from the desk 4 to the wrist fluctuates slightly even if the arm pillow 6 is used to take a correct posture, which causes an error in daily blood pressure control, and is correct. It caused anxiety when measuring blood pressure.

According to the present invention, as shown in FIG. 1A, when the wrist height h is measured by placing the elbow on the desk 4 to measure the blood pressure of the wrist, the angle α between the extension line from the elbow to the wrist and the upper surface of the desk 4 is α. And the distance L from the elbow to the wrist around which the compression band 2 is wrapped, h
Paying attention to the relationship of = Ltan α, the inclination angle measuring device 7 is provided on the compression band 2 as shown in FIG. 1 (b), and the person to be measured 1 keeps the height h of the wrist above the desk 4 constant. I try to secure it.

FIG. 2 is a plan view of the compression band 2 which is the human body mounting structure of the sphygmomanometer, and FIG. 3 is a front view of the compression band 2.
FIG. 4 is a central sectional view of the compression band 2. The compression band 2 is mainly formed by accommodating an air bag 8 for blocking blood and a curved plate 9 curved along the cross-sectional shape of the wrist for temporary holding in the wrist in an outer bag 10. ing. A hook portion 11 is provided so as to project to the outer surface side from the curved plate 9, and a cover 12 formed of plastic or the like and integrally provided with an inclination angle measuring device 7 is attached by engaging the hook portion 11 with the cover 12. There is. An air nozzle 13 is integrally attached to the air bag portion 8 by welding or the like, and an air tube 14 is connected to the air nozzle 13. The air tube 14 is connected to a pressure pipe section of a sphygmomanometer main body (not shown) that detects a pulse pressure fluctuation obtained from the compression band 2 and determines a blood pressure value based on this information. The compression band 2 is provided with planar fasteners 15 and 16 which are detachably attached to each other when wound around the wrist.

FIG. 5, FIG. 6 and FIG. 8 are detailed views of the tilt angle measuring device 7. The sensor part of the tilt angle measuring device 7 is formed by the pendulum 17, and the compression band 2 is attached to the wrist so that the cover 12 faces the upper surface of the palm, and the surface of the cover 12 of the compression band 2 is aligned with the horizontal plane. When the wrist is moved up and down from this state, it is rotated about the rotation shaft 18. A weight 19 is attached to the lower portion of the pendulum 17, and the pendulum 17 is always in the vertical direction (a is a vertical plane and b is a horizontal plane) even if the compression band 2 is inclined by the weight 19.
To keep. Further, a visible mark 20 is provided on the outer surface of the upper part of the pendulum 17 at a position maintaining a certain predetermined angle with the vertical direction. The cover 12 is provided with a window portion 21 for viewing the vicinity of the mark 20 of the pendulum 17. This window portion 21 has a transparent plate 2 in the opening 21a.
It is formed by mounting 1b. A mark 22 is provided at the edge of the window 21 at the center of the window 21. When the wrist tilt angle reaches a certain angle α, the pendulum 1
The mark 20 of 7 and the mark 22 of the window 21 are adapted to coincide with each other. The weight 19 and the mark 20 provided on the pendulum 17 may be an integral type in which the shape of the pendulum body is changed or a combination of different types. Figure 5
6 shows the compression band 2 in a horizontal state, and FIG. 6 shows the compression band 2 inclined as shown in FIG. An inclination between the elbow-wrist extension line and the desk 4 where the wrist is at the same height as the heart 3 in the average length L from the elbow to the wrist calculated from the average height of the blood pressure measurement target person The angle α is set according to the size of a general desk 4 or chair 5, and the mark 20 is provided at a position inclined with respect to the vertical line by the same angle α as the inclination angle α with respect to the vertical direction. The mark 20 of the pendulum 17 corresponds to the mark 22 at the center of the window 21 when the inclination angle of α is α.

In FIG. 7, a scale line 23 is provided so that the tilt angle of the mark 20 of the pendulum 17 visible in the center of the window 21 can be seen when the position of the mark 20 is pivotally moved by the tilt angle of the wrist. Is provided on the edge of the window portion 21. A plurality of graduation lines 23 are provided so that the individual suitable inclination angle can be easily understood depending on the height of the person to be measured 1 and the measurement conditions such as the desk 4 and the chair 5 at the time of measurement. In FIG. 9, a plurality of scale lines 23 are provided on the pendulum 17 side. In FIG. 10, a plurality of scale lines 23 are provided on both the pendulum 17 and the window 21 side. In FIG. 11, a movable mark portion 24 having a mark 22 or a graduation line is provided on the window portion 21 so as to be slidable or pivotally movable, so that a person can clearly set the reference angle position of the person to be measured.

Further, in the embodiment of the present invention, since the cover 12 of the compression band 2 is attached by wrapping it around the palm having the artery of the wrist, the air tube 14 is extended from the center of the cover 12 and wound around the center of the palm. There is. Therefore, the inclination angle measuring device 7 is also similar to the protruding position of the air tube 14 in order to reduce the friction of the movable portion of the pendulum 17 due to the displacement of the compression band 2 in the circumferential direction of the wrist and the displacement of the inclination angle due to the viewing angle. It is arranged in the center of the upper surface of the cover 12 when the compression band 2 is properly attached. In FIG. 1B, the line D is the center line.

FIG. 12 shows another embodiment of the tilt angle measuring device 7. In this case, the sensor unit has a spherical floating body 25.
The liquid 27 such as water is put in the transparent hollow spherical container 26, and the floating body 25 is put in the transparent hollow spherical container 26 to make it float. The housing 26 is fixed to the window portion 21 of the cover 12. The floating body 25 has a weight 28 at its lower portion (the center of gravity may be located at the lower portion) so as to keep the floating body 25 in the same posture with respect to the liquid surface (horizontal surface), and on the outer surface of the floating body 25. Is provided with a mark 20 at a position inclined by a predetermined angle α with respect to the vertical direction. Then, as shown in FIG. 13, the position of the mark 20 of the floating body 25 seen from the window 21 of the cover 12 changes with respect to the inclination angle of the compression band 2, and the mark 20 is made to correspond to the predetermined position of the window 21. The height position of the compression band 2 and the position of the heart 3 can be aligned. The floating body 25 does not need to be formed in a spherical shape or an arc shape, but the inner surface of the storage body 26 that is made of transparent glass or plastic that seals the floating body 25 and the liquid 24 is a practical inclination of the compression band 2. Floating body 25 against changes in angle
It is necessary to form an arc so as not to interfere with the rotation of the.

It should be noted that these tilt angle measuring devices 7 need not be formed integrally with the compression band 2, but the device alone can be properly attached to the measurement site. Further, in the above-mentioned embodiment, the embodiment of the sphygmomanometer for measuring the blood pressure at the wrist is described, but the same can be carried out even if the blood pressure is measured at the finger or the upper arm.

[0020]

As described above, the present invention provides an inclination angle measuring device for measuring the inclination angle of the measurement position at or near the human body attachment structure of a sphygmomanometer attached to the blood pressure measurement site such as the upper arm, wrist or finger. Since it is provided, it is possible to measure the inclination angle of the measurement site to measure blood pressure and adjust the measurement site to the height of the heart, and it is possible to reduce measurement errors in managing daily blood pressure fluctuations and to have a correct blood pressure with confidence. In addition, the tilt angle measuring device has a movable structure that always maintains the same vertical posture even if the tilt angle of the measurement site changes, and it always keeps the same posture in this vertical direction. Since the tilt angle of the measurement site is displayed based on the thing, it is possible to measure the tilt angle of the measurement site with a simple mechanical structure and match it with the height of the heart. Few failures It is those that allow you to casting.

In the invention according to claim 2 of the present invention, since the tilt angle measuring device having a movable structure that always maintains the same vertical posture is a rotatable pendulum, the pendulum is rotated. With a simple structure that can be freely installed, the angle can be measured and the measurement site can be adjusted to the height of the heart. Moreover, a visual mark is provided at a certain angle position with the pendulum with respect to the vertical direction of this pendulum. Because there is
The measurement position can be adjusted by looking at the mark.

According to the third aspect of the present invention, the pendulum mark can be seen substantially in the center of the window of the human body mounting structure when the human body mounting structure is tilted by a predetermined angle. Therefore, the position of the mark can be easily and accurately identified through the window. In addition, claim 5 of the present invention
In the invention described above, a mark is provided on the fixed part side so as to face the mark of the rotatable pendulum, and the structure is such that the inclination angle of the human body mounting structure part can be recognized by the relative position of these marks. The height of the measurement site can be accurately adjusted while observing both marks.

Further, in the invention according to claim 6 of the present invention, if a plurality of scale lines are provided on one or both of the pendulum side and the window side, the height of the measurement site can be easily taken into consideration while considering individual differences. Can be combined. Further, in the invention according to claim 7 of the present invention, the tilt angle measuring device having a movable structure that always keeps the same vertical posture is a floating body that floats on the liquid, and the inner surface of the storage body that stores the liquid is Since it has an arc surface, it is possible to measure the angle and adjust the measurement site to the height of the heart with a simple structure of floating a floating body in the liquid.

Further, in the invention according to claim 8 of the present invention, when the human body mounting structure is properly mounted on the human body, the inclination angle measuring device is provided at a position corresponding to substantially the center of the upper surface of the human body mounting structure. Since it is arranged, the angle can be measured more accurately and the measurement site can be accurately aligned with the height position of the heart.

[Brief description of drawings]

1A and 1B show an embodiment of the present invention, FIG. 1A is a schematic view of a blood pressure measurement state, and FIG. 1B is a perspective view in which a main part is enlarged.

FIG. 2 is a plan view of the same compression band.

FIG. 3 is a front view of the same compression band.

4 is a sectional view taken along line BB of FIG.

5 is a detailed view of a portion C of FIG.

FIG. 6 is a diagram of the operating state of FIG.

FIG. 7 is a partially cutaway plan view of the above cover.

8 is a cross-sectional view taken along the line AA of FIG.

FIG. 9 is a partially cutaway plan view of a cover portion of another embodiment of the above.

FIG. 10 is a partially cutaway plan view of a cover portion of another embodiment of the above.

FIG. 11 is a partially cutaway plan view of a cover portion of another embodiment of the above.

FIG. 12 is a sectional view of a main part of another embodiment of the above inclination angle measuring device.

13 is a cross-sectional view of the operating state of FIG.

[Explanation of symbols]

1 Person to be measured 2 compression band 3 heart 4 desks 5 chairs 6 arm pillow 7 Tilt angle measuring device 17 Pendulum 20 mark 21 window 22 mark 23 scale lines 25 floating body 26 Storage 27 liquid

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A61B 5/022

Claims (8)

(57) [Claims] 1. An inclination angle measuring device for measuring an inclination angle of a measurement position is provided at or near a human body mounting structure portion of a sphygmomanometer attached to a blood pressure measuring portion such as an upper arm, a wrist, a finger, etc., and the inclination angle measuring device is provided. Has a movable structure that always maintains the same vertical posture even when the inclination angle of the measurement site changes, and displays the inclination angle of the measurement site based on the one that always maintains the same posture in the vertical direction. A sphygmomanometer characterized by being a thing. 2. The tilt angle measuring device having a movable structure that always maintains the same vertical posture is a rotatable pendulum, and a mark that can be visually observed at a predetermined angular position with the pendulum with respect to the vertical direction of the pendulum. The blood pressure monitor according to claim 1, wherein the blood pressure monitor is provided. 3. The sphygmomanometer according to claim 2, wherein the pendulum mark is visible substantially in the center of the window of the human body mounting structure when the human body mounting structure is inclined at a predetermined angle. 4. The predetermined angle is an angle close to the angle formed by the top surface of the desk and the extension line from the elbow of the subject to the wrist attached to the desk when blood pressure is measured on the desk in a normal state. The blood pressure monitor according to claim 2, wherein 5. A structure is provided in which a mark is provided on the fixed part side so as to face the mark of the rotatable pendulum, and the inclination angle of the human body mounting structure part can be recognized by the relative position of these marks. The blood pressure monitor according to claim 2. 6. The sphygmomanometer according to claim 3, wherein a plurality of scale lines are provided on one or both of the pendulum side and the window side. 7. The tilt angle measuring device having a movable structure that always maintains the same vertical posture is a floating body floating in a liquid,
The sphygmomanometer according to claim 1, wherein an inner surface of the container for containing the liquid is an arc surface. 8. The tilt angle measuring device is arranged at a position corresponding to approximately the center of the upper surface of the human body mounting structure when the human body mounting structure is properly mounted on the human body. Blood pressure monitor.