JPH021221A - Cuff for measuring blood pressure and blood pressure measuring device having the same cuff - Google Patents

Abstract

PURPOSE:To enhance the reproducibility of a measured blood pressure value by suppressing the measuring error caused by an volume of air at the time of the measurement of blood pressure by inwardly turning the expansion of an air bag by a plate- shape reinforcing member having elasticity and forming a fan-shape in a developed state and suppressing the volume of air in the air bag at the time of tightening to a low level. CONSTITUTION:A reinforcing member 6 is a member having flexibility hard to elongate composed of polypropylene and a large number of slits 6a are arranged thereto in the direction shown by an arrow L. The reinforcing member 6 covering an air bag 5 can be flexibly and reasonably bent along the expansion in the vicinity 20a of the central part of the upper arm 20 at the time of the injection or discharge of air 21 and, since said air bag 5 can be almost equally held in the axial direction of the upper arm during measurement, the extreme expansion in the vicinity 20a of the central part of the upper arm can be suppressed and, since the outward expansion of the air bag 5 with respect to the axis of the upper arm can be suppressed by the reinforcing member 6, the upper arm 20 can be set to a desired pressurized state by a reduced amount of air.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a blood pressure measuring cuff used for non-invasive blood pressure measurement and a blood pressure measuring device having the cuff, and particularly relates to an improvement in a mechanism for compressing an arm during measurement. It is something.

[Prior Art J] Normally, when blood pressure is measured using a non-invasive blood pressure measurement method, a cuff is wrapped around the arm and the air pressure inside the cuff is increased to block blood flow, thereby compressing the artery. At this time, in order to avoid blood pressure measurement errors, it is important to adjust the tightness of the cuff and not to loosen the cuff during measurement.

Generally, in the oscillometric method, which is a non-invasive blood pressure measurement method, the cuff pressure corresponding to the maximum value of the pulse wave component is taken as the average blood pressure, and the cuff pressure corresponding to approximately 50% of this maximum value is set as the average blood pressure. The cuff pressure corresponding to the systolic blood pressure and approximately 80% of the maximum value is defined as the diastolic blood pressure.

[Problem to be solved by the invention] However, compared to the intravascular volume of the arm, the air volume inside the cuff is
For example, if the volume is 10 times or more larger than the intravascular volume, the measured mean blood pressure may contain more errors than the blood pressure measured using invasive blood pressure measurement. It will happen.

In view of this, problems encountered during measurement using the conventional blood pressure measurement cuff will be described below.

FIG. 13 is a schematic perspective view showing a conventional blood pressure measuring cuff, and FIG. 14 is a partially cutaway view illustrating a state in which the cuff main body 100 shown in FIG. 13 is attached.

In FIGS. 13 and 14, an air bag 102 for blood ischemia covered with an outer covering part 101 is provided in front of the approximate center 100a of the cuff body 100 developed in a band shape, and the center side of this air bag 2 is Air port 10 for air injection from near part 102a
3 stands out.

Further, behind the approximate center 100a of the cuff body 100, a hooking part 104 is extended so as to overlap the vicinity of both ends of the cuff body 100 and attach the cuff body 100 to the upper arm. On the other hand, a hanging part 105 for hanging a hanging part 104 is extended on the back side of the air bag 102.

At the time of measurement, the cuff body 100 having the above-described configuration is attached to the upper arm 108, and the tube 1 connected to the air port 103 is attached.
A predetermined amount of air 107 is injected from 06 onwards. In this way, the artery flowing through the upper arm 108 gradually reaches an ischemic state, but the air bag 1 of the cuff body 100 in the direction of arrow B
The area near the center of 02 expands particularly noticeably. Due to this expansion, even if the air capacity within the cuff body 100 exceeds an appropriate amount, it continues to increase until it is suppressed by the outer skin 101.

However, since the measurement error is strongly influenced by the air volume injected into the cuff, a problem arises in that as the air volume increases, the measurement error is exacerbated.

Therefore, the present invention has been made in view of the above-mentioned problems, and its purpose is to provide a blood pressure measurement device that suppresses measurement errors caused by air volume during blood pressure measurement and improves the reproducibility of blood pressure measurement values. The present invention provides a cuff and a blood pressure measuring device having the cuff.

[Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the objectives, a blood pressure measurement cuff and a blood pressure measurement device including the cuff according to the present invention have the following configuration.

That is, the blood pressure measurement cuff has an air bladder inside, and a plate-shaped reinforcing member that is elastic and has a fan-shaped expanded shape is attached to the outer peripheral surface of the air bladder. It is characterized in that the reinforcing member is configured to direct the expansion of the air bag inward and to suppress the air volume within the air bag to a small amount when tightened.

Preferably, in a blood pressure measuring cuff having an air bladder inside, a reinforcing member is provided, the reinforcing member comprising a flexible mesh member that is difficult to stretch inside an elastic frame and attached to the outer peripheral surface of the air bladder. Preferably, the reinforcing member is configured to direct the expansion of the air bag inward and to suppress the air volume in the air bag to a small amount when tightened. In the blood pressure measurement cuff, a plate-shaped reinforcing member having elasticity and having a plurality of slits arranged in parallel is arranged such that the longitudinal direction of each of the slits corresponds to the axial direction of the arm when worn. The reinforcing member is placed over the outer peripheral surface of the air bag, and is configured to direct the expansion of the air bag inward and to suppress the air volume within the air bag to a small amount when tightened.

Preferably, the slit is provided in the shape of an ellipse, a rhombus, an ellipse, or a rectangle.

Preferably, in a blood pressure measuring cuff having an air bladder inside, a reinforcing member is formed by connecting a plurality of elastic band portions to the outer peripheral surface of the air bladder by a connecting body made of a separate member. The reinforcing member is configured to direct the expansion of the air bag inward and to suppress the air volume within the air bag to a small amount when tightened.

Furthermore, preferably, the blood pressure measuring cuff main body is characterized in that it is provided with attachment means to which the reinforcing member according to any one of claims 1 to 5 can be attached in advance to a predetermined position.

Preferably, in a blood pressure measuring cuff having an air bag inside, a plate-like plate having elasticity and having ribs provided along a pair of opposing edges is provided on the outer peripheral surface of the air bag. A reinforcing member is placed over the arm, and the reinforcing member directs the expansion of the air bag inward and suppresses the air capacity in the air bag to a small amount when tightened, and when worn, the pair of opposing ribs of the reinforcing member It is characterized by forming a ring along the circumference.

Preferably, the rib is made of a flexible member having higher strength than the reinforcing member main body.

Furthermore, preferably, in a blood pressure measuring cuff having an air bag inside, the outer peripheral surface of the air bag is made of a material that is difficult to expand and contract, and an elastic plate-like material is formed along the periphery of the air bag. The present invention is characterized in that a reinforcing member is attached in the shape of a frame, and the reinforcing member directs the expansion of the air bag inward and suppresses the air volume within the air bag to a small amount when tightened.

Preferably, the blood pressure measuring cuff according to any one of claims 1 to 9 is provided.

[Function] According to the above configuration, during measurement, for example, a plate-shaped reinforcing member that has elasticity and has a fan-shaped unfolded shape, and a flexible net-like member that has elasticity and is difficult to expand inside the frame. A reinforcing member formed by attaching a reinforcing member, a plate-shaped reinforcing member having elasticity and having a plurality of slits arranged in parallel, a reinforcing member formed by connecting a plurality of elastic band portions by a connecting body made of another member, The interior of the air bag is elastic and has ribbed reinforcing members along a pair of opposing edges to direct the expansion of the air bag inward and achieve a good tightening state. The air capacity can be kept to a small amount. In particular, the shape of the slit is oval, diamond, oval,
Or it may be square. Further, each of the above-mentioned reinforcing members can be attached in advance to a predetermined position by means of attachment means. Further, the rib may be a flexible member having higher strength than the reinforcing member.

In addition, the outer peripheral surface of the air bag is made of a material that is difficult to expand and contract.
Even if an elastic plate-shaped reinforcing member is installed in a frame shape along the periphery of the air bag, it is possible to direct the expansion of the air bag inward and reduce the air capacity inside the air bag to achieve a good tightening state. It can be suppressed.

Furthermore, each of the blood pressure measurement cuffs described above can be used in a blood pressure measurement device.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Note that in this embodiment, a blood pressure measurement cuff that measures blood pressure using an oscillometric method is used.

FIG. 1 is a side sectional view showing the cross-sectional shape of the side surface of the blood pressure measuring cuff according to this embodiment.

In FIG. 1, 1 is a cuff body of a blood pressure measuring cuff. This cuff body 1 has a structure in which a band-shaped outer band part 2 made of cloth that covers the outer periphery and an inner band part 3 which is directly wound around the upper arm are attached.

The adhesion position of the inner band part 3 on the outer band part 2 is approximately on the one end 2b side from the center 2a of the inner side of the outer band part 2. Therefore, a space 4 is formed by the inner band portion 3 and the outer band portion 2 on the one end 2b side. An air bag 5 is housed in the space 4 with ample room, and a reinforcing member 6, which will be described later, is housed so as to cover the outer periphery of the air bag 5. The air bag 5 is provided with an air port (not shown), and the air bag 5 is pressurized by injecting air through the air port.

Further, a hooking portion 8 having a convex hooking member is spread on the inner surface 7 near one end 2C of the outer band portion 2, and a concave hooking member is attached to the outer side 9 near the other end 2b. The hanging part 10 in which is planted is spread out.

Next, a method for suppressing the air injection volume in the blood pressure measurement cuff configured as described above will be explained.

FIG. 2 is a schematic perspective view showing the structure of the reinforcing member 6 of the blood pressure measuring cuff according to this embodiment.

In FIG. 2, the reinforcing member 6 is a flexible member made of polypropylene that is difficult to stretch, and has a plurality of slits 6a arranged along the direction of the arrow so that it can flexibly adapt to the shape of the upper arm. ing. This slit 6a allows the reinforcing member 6 to suitably accommodate the bulge on the arm circumference.

Further, FIG. 3 is a diagram illustrating a blood pressure measurement method for blood pressure measurement according to this embodiment.

First, the cuff body l is attached to a predetermined position on the upper arm 20 by hooking the hooks 8 and 10 (not shown). still,
In order to inject air 21 into the air bag 5, an air injection tube 1 is attached to an air port 11 that protrudes outward from the cuff body 1.
2 is inserted.

In this state, air 21 is injected into the air bag 5, and blood pressure is measured using a predetermined oscillometric method.

When the air 21 is injected or discharged, the reinforcing member 6 that covers the air bag 5 can be flexibly and effortlessly bent along the bulge in the vicinity of the central portion 20a of the upper arm 20. The reinforcing member 6 shown by the two-dot chain line in FIG. 3 shows the above-mentioned deflected state.

Therefore, during measurement, the thickness due to the expansion of the air bag 5 in the radial direction with respect to the axis of the upper arm can be maintained almost evenly around the arm in the axial direction of the upper arm, so that Not only can extreme expansion at 20a be suppressed, but also the dead space created between the upper arm and the air bag can be minimized.

In addition, since the reinforcing member 6 prevents the air bag 5 from expanding outward with respect to the axis of the upper arm, there is no noticeable change in the external shape of the cuff body, and the air bag 5 has a small air capacity. Accordingly, the desired pressurizing state for the upper arm 20 can be set.

As described above, according to this embodiment, the air volume within the cuff body can be reduced to such an extent that it does not affect the ischemic performance, thereby suppressing measurement errors of the blood pressure monitor. Therefore, a blood pressure measurement cuff with improved reproducibility of blood pressure measurement values can be provided.

In the case of the oscillometric method, measurement is performed by pressurizing the cuff body attached to the upper arm to a level higher than the systolic blood pressure. In other words, it is a blood pressure measurement cuff used in a sphygmomanometer that detects changes in pressure fluctuation based on minute changes in the air volume within the cuff that are superimposed on the internal pressure within the cuff body and synchronized with heartbeats. According to the authors, if the above-mentioned pressure changes are greatly amplified and used in a blood pressure monitor that can detect even a user with weak pulsations with a good S/N ratio of the signal due to pressure changes, the above-mentioned effect will not affect the ischemic performance. The measurement error is reduced by reducing the air capacity to the extent that it does not affect the measurement.

Next, a first modification example in which the reinforcing member of this embodiment is modified
A sixth modification will be explained.

Explanation of the first modification> First, a first modification will be explained.

FIG. 4 is a schematic perspective view showing the structure of a reinforcing member according to a first modification of the present embodiment, and FIG. 5 is a developed view of the reinforcing member shown in FIG. 4.

In FIGS. 4 and 5, 3o is a reinforcing member according to the first modification. The developed shape of this reinforcing member 30 is as shown in FIG. 5, as shown in FIG.
are connected in a line at a predetermined distance apart. As a connection method, a connecting plate 34 made of plate-shaped polypropylene is placed near the center of the long side of each band, and rivets 35 are riveted to each band at two locations from above the connecting plate 34. The configuration is assembled by

The band parts 31 to 33 are made of polypropylene, and especially in the band parts 31 and 33 located at both ends, as shown in FIG. end 33a.

33b is curved in an arched shape so as to face downward. This allows it to be easily bent to follow the shape of the upper arm.

When used as a blood pressure measurement cuff, the reinforcing member 30 configured as described above is used after being incorporated into a cuff body configured similarly to the cuff body 1 described above. In this case, as shown in FIG. 4, each of the band members 31 to 33 can be flexibly bent into a C-shaped cross section during mounting or measurement.

Further, adjacent band portions are spaced apart by a predetermined distance, and the flexibility of the connecting body 34 allows it to be bent appropriately to match the shape of the upper arm. That is, the coordinate axes X, Y, Z shown in FIG.
In this case, the degree of freedom of the pitching movement of the band portions 31 and 33 using the bending portions 34a and 34b (considered as the Y-axis) of the connecting body 34 as fulcrums (or rotational axes) can be particularly expanded. Therefore, it can be fully adapted to the shape of the upper arm.

Although the reinforcing member 30 is shown as an example of an assembly type, the present invention is not limited to this, and may be an integral molding in which the band portion and the connecting body are integrally molded. In this case, in order to increase the strength of the part corresponding to the connecting body, the thickness of the connecting body should be made thicker than the band part, and all the parts where stress is concentrated when the reinforcing member is bent should have a radius. good.

Of course, the band portion and the connecting body may be provided as separate members,
These may be integrated by welding or the like, and the number of band portions is not limited to three, but may be two or four.

As explained above, according to the first modification, even if the cracks (or slits) are provided in a direction substantially perpendicular to the axial direction of the arm, the same effect as that of the cuff body 1 described above can be obtained. , it is possible to obtain the same functions and effects as those of the above-mentioned embodiments.

Explanation of the second modification> Next, a second modification will be explained.

FIG. 6 is a schematic perspective view showing the structure of a reinforcing member according to a second modification of this embodiment.

In FIG. 6, 40 is a reinforcing member according to the second modification. This reinforcing member 40 has a plurality of elliptical slits 42 in a band-shaped band portion 41 made of polypropylene, and the distance between the slits narrows toward the center of the band portion 41.

Furthermore, ribs 43 and 44 made of a flexible material are provided on the framework of both edges of the band portion 41 in the direction of arrow M.

According to the above configuration, since the reinforcing member 40 requires strong rigidity as a frame as it goes in the direction of the arrow M, the ribs 43
, 44 are provided to increase the strength.

On the other hand, since particularly strong rigidity is not required near the center of the band portion 41, the size of the slit 42 can be increased. That is, even if the stiffness near the center of the reinforcing member is weakened to the necessary minimum, the stiffness of the reinforcing member as a whole is not impaired, and the reinforcing member can maintain sufficient rigidity.

Furthermore, in the slit 42, the reinforcing members 6 and 3 described above
Similar to 0, it is designed to have the effect of easily bending along the shape of the arm when measuring blood pressure.

Alternatively, the ribs may be welded as separate members, and in this case, a flexible member having higher strength than the material of the reinforcing member body is selected as the material for the ribs, thereby further increasing the rigidity.

According to the above-mentioned explanation, the second modified example has the effect of providing a structure with high rigidity and low rigidity, and is advantageous in that there is no waste. By storing it in the cuff body in the same way as the reinforcing members 6 and 30 according to the modified example, the same action and effect can be exhibited in blood pressure measurement.

<Explanation of the third modification> Next, a third modification will be explained.

FIG. 7 is a top view showing the configuration of a reinforcing member according to a third modification of the present embodiment, and FIG. 8 is a sectional view taken along the line N--N in FIG. 7.

In FIG. 7, reference numeral 50 denotes an air bag with a flap according to the third embodiment, and the direction indicated by arrow 0 is the circumferential direction when the cuff is wound around the upper arm during measurement. A quadrilateral frame part 52 is joined to surround the peripheral edge of the air bag part 51, which is the main body of the ribbed air bag 50. This frame body part 5
2 is flexible and consists of a rib 53 that increases the rigidity of the peripheral edge of the air bag portion 51 and a cover 54 that accommodates the rib 53. The rib 53 is made of polypropylene. As shown in FIG. 8, the cover 54 has a structure in which two pieces of cloth having the same shape are overlapped to accommodate the ribs 53. In the cover 54, one inner peripheral portion 54a, 54b is connected to the air bag portion 51. The peripheral edge portion 51c of the two cloths is sandwiched and welded together, and the other outer peripheral portions 54c and 54d are welded and bonded by overlapping two pieces of cloth as they are. In FIG. 7, the illustrated surface of the air bag portion 51 is the outer circumferential surface 51a opposite to the surface that presses the upper arm, and the inner circumferential surface 51b that presses the upper arm against this outer circumferential surface 51a is the surface shown in FIG. As such, it has a slack shape compared to the outer circumferential surface 51a so that it can be easily pressed against the upper arm during measurement.

Is the above configuration O? When measuring blood pressure by using the ribbed air bag 50 in a cuff (not shown) as in the above-described embodiment, the inner peripheral surface 51b of the air bag portion 51 extends around the upper arm circumference inside the cuff body. Set it so that it is facing the same direction.

As described above, according to the third modification, when the blood pressure measurement according to the third modification is performed, the rigidity of the peripheral portion of the air bag portion 51 is increased, as in the above-described embodiment and modification. During pressurization, the air bag portion 51 is not deformed more than necessary, and in a state where the air bag portion 51 is adapted to the shape of the upper arm, the air to be injected into the upper arm can be suppressed without loss of air.

Explanation of the fourth modification> Next, a fourth modification will be explained.

FIG. 9 is a top view showing the structure of a reinforcing member according to a fourth modification of this embodiment.

In FIG. 9, 60 is the aforementioned reinforcing member 6, 30.40
This is a reinforcing member that has the same function as that of the reinforcing member.

This reinforcing member 60 has a frame portion 61 whose interior is hollowed out into a substantially rectangular shape, and a plurality of elastic threads are implanted so as to intersect with each other on an inner circumferential surface 61a. The surface formed by this thread is referred to as a net 62.

When measuring blood pressure using the elastic band 60 configured as described above in a cuff (not shown) in the same manner as in the previous embodiment, the reinforcing member 60 and the air bag are overlapped inside the cuff body. The reinforcing member 60 is set so as to cover the outer periphery of the air bag inside the cuff worn on the upper arm during measurement. After attaching the cuff to the upper arm in this way, by injecting air into the air bag, the second
Similarly to the reinforcing member 6.40 shown in FIG.
The elastic thread forming the net 62 flexibly adapts to the shape of the upper arm, and the elastic frame 60 allows the air bag to be pushed from the outside without losing the pressing force on the upper arm due to inflation of the air bag. It will definitely suppress it.

According to the above explanation, even in the fourth modified example, the same operations and effects as in the above-described embodiment and modified example can be obtained.

Explanation of the fifth modification> Next, a fifth modification will be explained.

FIG. 10 is a schematic perspective view showing the configuration of a reinforcing member according to a fifth modification of the present embodiment, and FIG. 11 is a top view showing the positioning portion of the reinforcing member according to the fifth modification of the present embodiment. .

In FIG. 10, 71 and 72 each have a substantially rectangular developed shape, and one of the two opposing long sides is long, and as shown in the figure, the direction indicated by the arrow P is the axial direction. When each is rolled into a cylindrical shape,
Each reinforcing member has a shape that widens from one peripheral edge (7lb or 72b) to the other peripheral edge (71a or 72a). When the reinforcing members 71 and 72 are used for a cuff, as shown in FIG.
When 1 and 72 are connected, the edge 71a and the peripheral edge 72a
Set them so that they are facing each other.

The reinforcing members 71 and 72 are different from the above-mentioned first modification example, and are provided separately. If this is done, even if they are stored inside the cuff, they will shift due to air injection during measurement. , in the fifth modification, the reinforcing members 71, 72 are positioned.

Therefore, the means for attaching the reinforcing members 71 and 72 will be explained using FIG. 11. In the figure, 73 is a pocketed air bag in which a pocket is attached to a conventional air bag, and one outer surface 73a is provided with longer peripheral edges 71a and 72a of reinforcing members 71 and 72 facing each other. Pockets 74 and 75 are attached. This pocket 7
4 and 75 are insertion lowers 4a and 7 of reinforcing members 71 and 72.
5a, a reinforcing member 71 is inserted into the insertion lower 5a from the one end 71c side shown in FIG. 10, and a reinforcing member 72 is inserted into the insertion lower 4a from the one end 72c side shown in FIG. 1O. The outer surface 73b of the pocketed air bag 73, which is opposite to the outer surface 73a, is the surface that presses against the upper arm during measurement. In this way, when the two reinforcing members 71 and 72 are set in the pocketed air bag 73 and stored in the cuff (not shown), and blood pressure is measured in the same manner as in the above-mentioned embodiments and modifications, the air is directly inflated. Since expansion can be suppressed by wrapping the outer peripheral surface of the bag, dead space, that is, gaps can be further reduced. Further, since the pocket provided directly on the air bag can prevent the reinforcing member from shifting during measurement, the expansion of the air bag can be reliably directed toward the axis of the upper arm, and the upper arm can be effectively suppressed.

As described above, according to the fifth modification, it is possible to obtain the same functions and effects as the above-described embodiments and modifications. Further, by applying the fifth modification, the pocket attached to the air bag may be attached to the outer peripheral surface or inner peripheral surface of the outer band of the cuff, and the number of reinforcing members is not limited to two. It may be three.

Explanation of the sixth modification> Next, a sixth modification will be explained.

FIG. 12 is a top view showing the structure of a reinforcing member according to a sixth modification of this embodiment. In FIG. 6, 8o is a plate-shaped reinforcing member whose unfolded shape is fan-shaped. This reinforcing member 80 is a flexible member made of polypropylene that is difficult to stretch.

For example, when worn on the upper arm, the reinforcing member 80 is attached to the outer surface of the air bag so that the direction indicated by arrow Q is on the shoulder side.

As explained above, according to the sixth modified example, not only can the same functions and effects as the above-described embodiments and modified examples be obtained, but also it fits well to the upper arm.

As described above, if each of the reinforcing members shown in the first to sixth modified examples is used in a blood pressure monitor, good functions and effects can be obtained in the same manner as in the above-mentioned embodiments.

Now, the shape of the slit of the reinforcing member according to this embodiment and the modified example is not limited to an ellipse, and may be, for example, a rhombus, an ellipse, an ellipse, a square, etc., as long as it does not depart from the gist of the present invention. Also good.

Further, although polypropylene is used for the reinforcing member, the band portion, the connecting body, etc., materials that are difficult to stretch may be made of polyacetal, polyethylene or ABS resin, vinyl chloride sheet reinforced with fibers, etc.

Alternatively, the reinforcing member (including the air bag) or the band portion may be expanded into a fan shape, thereby further improving the ease of attachment to the upper arm.

Further, in the reinforcing member 6.40, the shape may be slightly narrowed near the center in the direction of arrow M in the case of the reinforcing member 6, and the near the center in the direction of arrow M in the case of the reinforcing member 40. It can also be adapted to users with thin arms.

Furthermore, in the fifth modification, the reinforcing member may be attached to the air bag or the outer band portion by welding or the like instead of using a pocket as the attachment means.

[Effects of the Invention] As explained above, according to the present invention, the reinforcing member with a fan-shaped unfolded shape used in the blood pressure measuring cuff suppresses the inflow of unnecessary air into the air bag while maintaining a good fit on the arm. becomes possible. Thereby, measurement errors of a blood pressure measuring device having a blood pressure measuring cuff can be reduced and reproducibility of measured values can be increased.

In addition, for example, the thin part between the slits formed by a plurality of slits arranged in parallel in the reinforcing member can be bent easily enough to accommodate the swelling of the arm, so that the gap between the arm and the air bag can be minimized as much as possible. It can be fitted in good condition. In addition to the slit, it is also possible to use a reinforcing member with a frame and a flexible net-like member attached inside the frame, or a reinforcing member with a reinforcing member attached directly along the periphery of the air bag, which is good for the arm. This improves the measurement environment for the blood pressure measuring device.

Further, by connecting a plurality of band parts, the degree of freedom is increased, and thereby the adaptability when worn on the upper arm can be improved. Furthermore, by adding ribs to the overall stiffness of the reinforcing member based on the required rigidity of each part of the reinforcing member, the structure of the reinforcing member is streamlined and well-balanced. A blood pressure measuring device with this can reduce measurement errors through efficient use of air volume.

Alternatively, by attaching the band portion to a predetermined position in advance, it will not shift within the cuff during measurement, which can also be useful in reducing measurement errors of the blood pressure measuring device.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing the cross-sectional shape of the side surface of the blood pressure cuff according to this embodiment, FIG. 2 is a schematic perspective view showing the structure of the reinforcing member 6 of the blood pressure cuff according to this embodiment, and FIG. 3 4 is a schematic perspective view showing the configuration of a reinforcing member according to a first modification of this embodiment, and FIG. 5 is shown in FIG. 4. FIG. 6 is a schematic perspective view showing the configuration of a reinforcing member according to a second modification of the present embodiment, and FIG. 7 is a developed view of the reinforcing member according to a third modification of the present embodiment. 8 is a sectional view taken along line N-N in FIG. 7, FIG. 9 is a top view showing the configuration of a reinforcing member according to a fourth modification of this embodiment, and FIG. 10 is a sectional view taken along the line N-N in FIG. FIG. 11 is a top view showing the positioning portion of the reinforcing member according to the fifth modification of the present embodiment, and FIG. 12 is a schematic perspective view showing the structure of the reinforcing member according to the fifth modification of the present embodiment. FIG. 13 is a schematic perspective view showing a conventional blood pressure measurement cuff; FIG. 14 is a partially cutaway view illustrating how the cuff body 100 shown in FIG. 13 is attached. It is. In the figure, l, 100... cuff body, 2... outer band part,
2a...center, 2b, 2c...end, 3...inner band portion, 4...space portion, 5,102...air bag, 6,3
0°40.60,71,72.80...Reinforcement member, 6
a...Slit, 7...Inner surface, 8,10゜104
．． 105... Hanging part, 9... Outer surface, 11°103
...Air port, 12,106...Tube, 21.1
07...Air, 31-33...Band portion, 34...
Connecting body, 34a, 34b...Bending portion, 35...Rivet, 50...Air bag with ribs, 51...Air bag portion, 51a...Outer peripheral surface, 51b. 61a...Inner peripheral surface, 52...Frame part, 53...Rib, 54...Cover 54a, 54b...Inner peripheral part,
54c, 54d"-outer periphery, 61 river frame, 62...
Net, 71a, 71b, 72a. 72b...periphery, 71c, 72c...end, 73.
... Air bag with pocket, 73a, 73b... External surface,
74.75...pocket, 74a, 75a...
Insertion port, 100a... center, 101... outer skin part,
102a...Central side part. Figure 2 Figure 1 Figure 4 Illustration Figure Figure 8 Figure 9 Figure ○

Claims (10)

[Claims] (1) In a blood pressure measuring cuff that has an air bag inside, a plate-shaped reinforcing member that is elastic and has a fan-shaped unfolded shape is placed over the outer peripheral surface of the air bag, and the reinforcing member A cuff for measuring blood pressure, characterized in that the cuff is configured to direct the expansion of the air bag inward and to suppress the air volume within the air bag to a small amount when tightened. (2) In a blood pressure measuring cuff that has an air bag inside, the outer peripheral surface of the air bag is covered with a reinforcing member that is made by attaching a flexible mesh member that is difficult to stretch to the inside of an elastic frame. A cuff for blood pressure measurement, characterized in that the reinforcing member is configured to direct the expansion of the air bag inward and to suppress the air volume within the air bag to a small amount when tightened. (3) In a blood pressure measurement cuff that has an air bladder inside, a plate-shaped reinforcing member that is elastic and has a plurality of slits arranged in parallel is arranged so that the longitudinal direction of each slit is aligned when the cuff is worn. The reinforcing member is placed over the outer peripheral surface of the air bag in the axial direction of the arm, and is configured so that the reinforcing member directs the expansion of the air bag inward and suppresses the air volume within the air bag to a small amount when tightened. Characteristic blood pressure measurement cuff. (4) The blood pressure measuring cuff according to claim 3, wherein the slit is provided in an elliptical, rhombic, oval, or rectangular shape. (5) In a blood pressure measuring cuff having an air bladder inside, a reinforcing member comprising a plurality of elastic band portions connected to the outer peripheral surface of the air bladder by a connecting body made of a separate member. A cuff for measuring blood pressure, characterized in that the reinforcing member directs the expansion of the air bag inward and suppresses the air volume within the air bag to a small amount when tightened. (6) The cuff body for blood pressure measurement is defined in claims 1 to 5.
A cuff for blood pressure measurement, characterized in that it comprises attachment means that can attach the reinforcing member according to any one of Items 1 to 3 in advance at a predetermined position. (7) In a blood pressure measuring cuff having an air bladder inside, a plate-shaped reinforcing member having elasticity and provided with ribs along a pair of opposing edges on the outer peripheral surface of the air bladder. Cover it with
The reinforcing member is configured to direct the expansion of the air bag inward and to suppress the air volume within the air bag to a small amount when tightened, and when worn, a pair of opposing ribs of the reinforcing member ring around the arm circumference. A blood pressure measurement cuff characterized by forming a. (8) The blood pressure measuring cuff according to claim 7, wherein the rib is made of a flexible member having higher strength than the reinforcing member main body. (9) In a blood pressure measuring cuff that has an air bag inside, the outer circumferential surface of the air bag is made of a material that is difficult to expand and contract, and an elastic plate-shaped reinforcing member is provided along the periphery of the air bag. A cuff for measuring blood pressure, characterized in that the reinforcing member is configured to direct the expansion of the air bag inward and to suppress the air volume within the air bag to a small amount when tightened. (10) A blood pressure measuring device comprising the blood pressure measuring cuff according to any one of claims 1 to 9.