JP2003024286A - Cuff for wrist type hemomanometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cuff for a wrist type hemomanometer capable of certainly pressing an artery positioned in a wrist part without exerting effect on muscles, tendons and bones of the wrist part. SOLUTION: The cuff 10 for the wrist type hemomanometer is equipped with a first air bag 14A as a first expansion region and a second air bag 16A as a second expansion region positioned between the first air bag 14A and the wrist part and comprising a material having stretchability higher than that of the material of the first air bag 14A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sphygmomanometer cuff for use in a sphygmomanometer that is worn on a living body to measure blood pressure,
More specifically, the present invention relates to the structure of a wrist-type sphygmomanometer cuff used in a wrist-type sphygmomanometer for measuring blood pressure in the wrist.

[0002]

2. Description of the Related Art In recent years, self-control of blood pressure has become more and more important, and a wrist-type blood pressure monitor, which can be more easily measured than an upper arm, has been widely used at home as a home blood pressure monitor. A schematic configuration of a conventional wrist type sphygmomanometer 100 will be described with reference to FIGS. 27 and 28. 27 is an overall perspective view showing the external appearance of the wrist-type blood pressure monitor 100, and FIG. 28 is a block diagram showing the internal configuration of the wrist-type blood pressure monitor 100. Wrist sphygmomanometer 1 with reference to both figures
00 is a main body 101 with a built-in control device for blood pressure measurement
And a wrist-type sphygmomanometer cuff 102 to which the main body 101 is attached.

An indicator 10 is provided on the outer surface of the main body 101.
3, a measurement start switch 104 is provided, and the pressurization sensor 105, the pressurization pump 106, and the exhaust valve 10 are provided inside.
7, and a CPU 108 that controls these devices.

The cuff 102 for wrist-type blood pressure monitor stores air sent from the pressurizing pump 106, and an air bag 109 used for compressing the artery of the wrist.
The air bag 109 is provided on the inner surface side thereof, and is provided with a band-shaped band 110 for mounting on the wrist and a surface fastener 111 for winding and fixing the band 110 around the wrist.

Next, a wrist-type blood pressure monitor 10 having the above-mentioned configuration.
Measurement of blood pressure using 0 will be described with reference to FIGS. 29 to 31. Note that in FIGS. 29 to 31,
For convenience, only the wrist-type sphygmomanometer cuff 102 is shown, and the main body 101 is not shown. FIG. 29 shows an outline of the sectional structure along the longitudinal direction before the wrist-type blood pressure monitor cuff 102 is attached to the wrist portion, and air is not yet supplied into the air bag 109. FIG. 30 is a cross-sectional view at the time of contraction showing a state in which the wrist-type blood pressure monitor cuff 102 is attached to the wrist portion 1. FIG. 31 is a sectional view at the time of inflation showing a state in which the wrist-type blood pressure monitor cuff 102 is attached to the wrist portion 1.

[0006] The wrist-type blood pressure monitor cuff 102 shown in FIG. 29.
As shown in FIG. 30, a band 110 is used to fix the air bag 109 to a position facing the radial artery 5 and the ulnar artery 7 of the wrist 1. Here, as the main anatomy of the wrist part 1, as shown in FIG. 30, the radius 2 located on the thumb side, the ulna 3 located on the little finger side, and the deep flexor tendon 4a located near the radius 2 are shown. , Long palmar flexor tendon 4b, radial artery 5, superficial flexor digital tendon 6a located near the ulna 3, ulnar carpal tendon 6b, ulnar artery 7, and the like.

Next, a wrist type blood pressure monitor cuff 10 is attached to the wrist portion 1.
When the attachment of No. 2 is completed, as shown in FIG. 31, by supplying air from the pressurizing pump 106 to the air bag 109, the radial artery 5 or the ulnar artery 7 (or both) of the wrist 1 is compressed. After that, the blood pressure sensor 105 is released in the process of exhausting the air in the air bag 109 by opening the exhaust valve 107.
The pressure inside the air bladder 109 is measured by, and blood pressure measurement data is obtained as a result.

[0008]

It is said that the wrist blood pressure monitor is inferior in accuracy of blood pressure measurement to the upper arm blood pressure monitor. This may be due to insufficient compression of the wrist artery. Insufficient compression of the artery means that the pressure on the inner wall of the blood vessel to be compressed (hereinafter referred to as the blood vessel inner wall pressure) is smaller than the air bag inner pressure. If the blood vessel inner wall pressure and the air bag inner pressure are equal, an accurate blood vessel inner wall pressure can be obtained by measuring the air bag inner pressure, and as a result, an accurate blood pressure measurement can be performed.

However, when the compressive force is insufficient, the air bag inner pressure becomes higher than the blood vessel inner wall pressure, and the air bag inner pressure is directly measured as blood pressure, resulting in high blood pressure. A possible cause of this lack of compression force is a lack of compression width (hereinafter referred to as a cuff width) of the wrist due to the air bag.

The cuff width of the upper arm sphygmomanometer is AHA (Americ
an Heart Association) has guidelines, but there are no guidelines for wrist cuff width. Therefore, as the cuff width, the “width of a fixed magnification of the diameter of the adaptive arm circumference”, which is a prescribed method in the case of the upper arm blood pressure monitor, is applied to the wrist as it is. The cuff width of the current wrist type sphygmomanometer is set to about 50 mm to 60 mm. However, even if the cuff width of the wrist-type sphygmomanometer is set based on this regulation method, the compression force is insufficient. This is because the wrist has many muscles and tendons that do not exist in the upper arm,
Further, since the bones are also located relatively close to the epidermis, it is considered that the compression of the artery by the air bag is blocked.

As shown in the sectional view of FIG. 31, the air bag 10
Sufficient air is supplied into the air bag 9, and the air bag 109 is inflated toward the wrist 1 side. However, due to the presence of the radius 2 and the long palmar flexor tendon 4b, the inflation of the air bladder 109 is hindered, the radial artery 5 is not sufficiently compressed, and the superficial digital flexor tendon 6 is provided.
a and the presence of the ulnar carpal tendon 6b, the air bag 109
It is understood that the expansion of the ulnar artery is inhibited and the ulnar artery 7 is not sufficiently compressed.

Originally, when the compression of the artery by the air bag 109 is not hindered at all, as shown in the schematic view of FIG. 32, the air bag 109 is sufficiently inflated to obtain a predetermined cuff width W1. However, when the radius 2 and the palmar flexor tendon 4b are present, the inflation of the air bag 109 causes the radius 2 and the palmar flexor tendon 4 to expand as shown in the schematic view of FIG.
As a result of being hindered by the presence of b and the like, the cuff width W2 becomes insufficient.

Therefore, an object of the present invention is to provide a wrist-type sphygmomanometer cuff capable of reliably compressing an artery located in the wrist without being affected by muscles, tendons, and bones existing in the wrist. To provide.

[0014]

In a wrist-type blood pressure monitor cuff based on the present invention, a compression fluid bag to which a predetermined amount of fluid is supplied in order to compress an artery of the wrist, and the compression fluid. A cuff for a wrist-type sphygmomanometer, comprising: a mounting means for mounting a bag on the wrist portion, wherein the compression fluid bag includes a first inflatable bag, the first inflatable bag and the wrist portion. And a second expansion bag made of a material having a higher elasticity than the material forming the first expansion bag.

With this configuration, when the fluid is supplied to the compression fluid bag, both the first expansion bag and the second expansion bag are inflated by the supply of the fluid. Since the second inflatable bag is made of a material having a higher elasticity than the material forming the first inflatable bag, the predetermined inflation pressure is secured to the wrist by the expansion of the first inflatable bag. In addition, the second inflatable bag expands in a state of being in close contact with the wrist, and the second inflatable bag flexibly wraps around the tendon or the bone, so that the tendon and the tendon, the tendon and the bone, and the bone and the bone. It becomes possible for the second inflatable bag to sneak in between and.

As a result, the pressure from the first inflatable bag is applied to the wrist portion in contact with the second inflatable bag regardless of the presence of muscles, tendons, or bones in the wrist portion, so that the artery in the wrist portion is sufficiently secured. It becomes possible to oppress. As a result, the lack of compressive force on the artery is resolved, and it becomes possible to measure blood pressure with high precision even with a wrist-type sphygmomanometer.

In a preferred embodiment of the invention, the first inflatable bag is inflated mainly toward the wrist side when the fluid is supplied, and the second inflatable bag is the fluid. Is supplied, it expands so as to wrap around the tendon or bone of the wrist. In a further preferred embodiment, the material of the second inflatable bag is
It is made of thin film silicone rubber or latex.

With this feature, as described above, the expansion of the first inflatable bag secures a predetermined pressure on the wrist side, and the second inflatable bag inflates in close contact with the wrist. Thus, it is possible to reliably realize that the second inflatable bag flexibly wraps around the muscle, the tendon, the bone, or the like.

In a further preferred aspect of the present invention, the shape of the second inflatable bag on the wrist side is uneven. As described above, by adopting the uneven shape, it is possible to obtain high elasticity, and it is possible to surely realize the wraparound to the muscle, tendon, bone or the like when the second inflation bag is inflated. Become.

In a further preferred form of the invention, the width of the second inflatable bag is smaller than the width of the first inflatable bag in the cross section along the wrist axial direction. As a result, even when pressurized air is introduced into the first inflation bag and the second inflation bag, both ends of the first inflation bag are inflated to cover both sides of the second inflation bag, so that the second inflation bag is expanded. It is possible to limit the lateral protrusion of the bag. As a result, the second inflatable bag can be inflated toward the wrist side, which is the living body side, and the pressure force from the first inflatable bag can be sufficiently transmitted to the wrist through the second inflatable bag. Will be possible.

In the above structure, preferably, the first inflatable bag protruding from the second inflatable bag is provided with side walls covering both sides of the second inflatable bag. Preferably, the side wall is an expansion bag into which air is introduced. Preferably, the inflatable bag is provided so that the internal space is integrated with the first inflatable bag.

In this way, the first protruding from the second inflatable bag
In the inflatable bag, a side wall of the second inflatable bag is provided, and a side wall of the second inflatable bag is provided to positively limit the outflow of the second inflatable bag in the lateral direction. Can be surely restricted. As a result, the second inflatable bag can be inflated toward the living body side, and the pressure force from the first inflatable bag can be sufficiently transmitted to the living body via the second inflatable bag.

[0023]

(First Embodiment) A first embodiment of a cuff for a wrist-type blood pressure monitor based on the present invention will be described below with reference to the drawings. The basic structure of the wrist-type sphygmomanometer using the wrist-type sphygmomanometer cuff according to the present embodiment is the same as that of the conventional wrist-type sphygmomanometer 100 described with reference to FIG. Will be omitted, and only the structure of the cuff for a wrist-type blood pressure monitor, which is a feature of the present invention, will be described below.

First, the structure of the wrist-type blood pressure monitor cuff based on the present invention and the wrist compression principle will be described with reference to FIGS.
Will be described with reference to. 1 is a diagram showing an outline of a cross-sectional structure along the longitudinal direction of the wrist-type blood pressure monitor cuff 10 according to the present embodiment before being attached to the wrist portion, and FIG. FIG. 4 is a cross-sectional view showing a state in which the measuring cuff 10 is attached, FIG. 3 is a cross-sectional view showing a state in which the wrist 1 is compressed by the wrist-type blood pressure measuring cuff 10, and FIG. 4 is a wrist-type blood pressure measuring device. It is a schematic diagram which shows the compression principle of the wrist part using the cuff 10.

(Structure) First, the structure of the wrist-type blood pressure monitor cuff will be described with reference to FIG. The wrist type blood pressure monitor cuff 10 stores the air sent from the pressurizing pump and is used for compressing the artery of the wrist, and the first air bag 14A as the first inflation bag and the first air bag. Located between the bag 14A and the wrist, the first air bag 14A
And a second air bag 16A as a second inflatable bag made of a material having higher elasticity. Further, a band-shaped band 11 as a mounting means for mounting the first air bag 14A and the second air bag 16A on the wrist portion, and a surface fastener for fixing the band 11 by winding the band 11 around the wrist portion. 1
It is equipped with 5. In the state shown in FIG. 1, air has not yet been supplied into each air bag.

(Principle of Wrist Compression) Next, the principle of compression of the wrist using the wrist-type sphygmomanometer cuff 10 will be described with reference to FIGS.
Will be described with reference to. Referring to FIG. 2, using band 11, first air bag 14A and second air bag 16A are
The wrist 1 is fixed so as to face the radial artery 5 and the ulnar artery 7. The anatomy of the wrist 1 is the same as that described with reference to FIG. 15, and thus the same reference numerals are given and detailed description thereof is omitted.

Next, referring to FIG. 3, the first air bag 14A
Is inflated mainly toward the wrist 1 side by being supplied with air, and the second air bag 16A is caused to wrap around the tendon or bone of the wrist 1 mainly due to being supplied with air. Expands.

In more detail, the second air bag 16A
The second bladder 16A wraps around the radius 2 and the palmar flexor tendon 4b due to the expansion. Thereby, the radius 2 and the palmar flexor tendon 4b
The second air bladder 16A sneaks in between, and the radial artery 5 is sufficiently compressed by the second air bladder 16A. In addition, the expansion of the second air bladder 16A causes the second air bladder 16A to move the superficial flexor tendon 6
a and around the carpal tendon 6b on the ulnar side. This allows
The second air bag 1 is provided between the superficial flexor tendon 6a and the ulnar carpal tendon 6b.
6A dives in, and the ulnar artery 7 is sufficiently compressed by the second air bag 16A.

As shown in FIG. 4, the air is in the first air bag 14
When supplied to A and the second air bladder 16A, both the first air bladder 14A and the second air bladder 16A are inflated by the supply of the fluid, but the second air bladder 16A is the first air bladder 1A.
Since the first air bladder 14A is inflated by being made of a material having elasticity higher than that of the material forming the wrist 4A,
A certain pressure on the side is ensured. Further, the second air bag 16A inflates in a state of being in close contact with the wrist portion 1,
When A flexibly wraps around the tendon or bone, the radius 2
The second air bladder 16A can sneak between the long palmar flexor tendon 4b and the radius 2 of the wrist 1 and the long palmar flexor tendon 4b. This is because the two air bags 16A are added to the wrist portion 1 with which they come into contact. The same applies to the case where the second air bladder 16A is submerged between the superficial flexor tendon 6a and the ulnar carpal tendon 6b. As a result, it is possible to obtain a sufficient cuff width W3.

From the viewpoint of wrapping the air bag around the tendon and the bone, it is conceivable that the air bag is made of only a highly elastic material. However, if an air bag made of only a highly elastic material is used, it will expand greatly in the lateral direction without applying sufficient pressure in the direction of pressing the wrist, so the wrist will be pressed sufficiently. You cannot do it. Therefore, as described above, the first air bag 14A as the first air bag and the second air bag 1 as the second air bag 1 made of a material having higher elasticity than the first air bag 14A.
The combination with 6A becomes important.

(Embodiment 1) Next, a specific structure of Embodiment 1 based on the above compression principle will be described with reference to FIGS. 5 and 6. In addition, FIG. 5 shows a cuff 10 for a wrist blood pressure monitor.
Of these, only the air bag is shown, showing the contracted state before the air is supplied, and FIG. 6 shows the expanded state when the air is supplied. 5 and 6 show cross sections along the wrist axis direction when the wrist-type blood pressure monitor cuff 10 is worn in the wrist circumferential direction.

First, referring to FIG. 5, the first air bag 14B as a first inflatable bag is located between the first air bag 14B and the wrist, and is more elastic than the first air bag 14B. It is provided with a second air bag 16B as a second inflation bag made of high material. As a specific material for the first air bag 14B, vinyl chloride (film thickness of about 0.3 mm) is used. Further, as other materials used for the first air bag 14B,
EVA (vinyl acetate; film thickness about 0.3 mm),
Examples thereof include urethane (film thickness of about 0.3 mm).

Further, in order to promote the expansion toward the wrist side,
The side wall 14a, 14b forms a gore (accordion structure). The contracted thickness of the first air bladder 14B is about 1.2 mm.

As a concrete material of the second air bag 16B, thin film silicon rubber, latex film, etc. are used.
The film thickness is about 0.3 mm. Other materials used for the second air bladder 16B include vinyl chloride (thickness less than about 0.3 mm), vinyl chloride softer than the first air bladder 14B, and the like.

The first air bag 14B and the second air bag 16
B are provided with air introduction pipes 14c and 16c, respectively, and a common air introduction tube 17 is connected in order to make the air pressures in the first air bag 14B and the second air bag 16B the same. .

In the above structure, when air is introduced into the first air bladder 14B and the second air bladder 16B, as shown in FIG. 6, since the first air bladder 14B has a gusset, It expands mainly in the direction of compressing the wrist. On the other hand, the second air bag 16B inflates in all directions. As a result, as described above, it is possible to sufficiently compress the artery of the wrist.

(Embodiment 2) Next, a specific structure of Embodiment 2 based on the above compression principle will be described with reference to FIGS. 7 and 8. It should be noted that FIG. 7 shows only the air bag, and shows a state before air is supplied, and FIG. 8 shows a state where air is supplied.

First, referring to FIG. 7, the first air bag 14C as the first inflatable bag is located between the first air bag 14C and the wrist, and is more elastic than the first air bag 14C. It is provided with a second air bag 16C as a second inflation bag made of high material. The specific material and film thickness of the first air bag 14B are the same as those in the first embodiment. Further, also in the structure, a gore is formed by the side walls 14a and 14b in order to promote the expansion toward the wrist side. The specific material of the second air bag 16C is also the same as that of the first embodiment, but the characteristic structure of this embodiment is that the shape of the second air bag 16C on the wrist side is the uneven shape 18. Is mentioned.

By adopting the uneven shape 18 in this manner, as shown in FIG. 8, when air is supplied to the first air bag 14C and the second air bag 16C, the second air bag 1
It becomes possible to obtain higher elasticity than that of the first embodiment on the wrist side of 6C, and it is possible to surely realize the wraparound to the tendon or bone when the second air bag 16C is inflated. Also, the second air bag 16C when inflated
If the size of is the same as in the case of the first embodiment,
The size of the second air bag 16C at the time of contraction is the same as that of the first embodiment.
The size of the air bag is smaller than that of the air bag, and the air bag can be downsized.

9 and 10, the second air bag 16C is shown.
The development perspective view of the concrete shape of concavo-convex shape 18 of the wrist part 1 side is shown. FIG. 9 shows the first uneven shape 18A, (a)
Is an overall perspective view, (b) is a sectional view taken along line XX in (a),
(C) is a sectional view at the time of expansion. Further, FIG. 10 is an overall perspective view showing a second uneven shape 18B on the wrist 1 side of the second air bag 16C.

The concave-convex shape 18A shown in FIG. 9 (a) has wavy convex portions 18a and concave portions 18b alternately provided in the longitudinal direction (see the sectional view of FIG. 9 (b)), and is in an expanded state. As shown in FIG. 9 (c), all the portions corresponding to the convex portions 18a and the concave portions 18b are the outer surface, and it is possible to greatly expand. The convex portion 18a has a length of about 30 mm, a width of about 7.5 mm, and a height of about 2 mm.
Is.

On the other hand, in the concavo-convex shape 18B shown in FIG. 10, the block-shaped convex portions 18a are arranged in a matrix, and the concave portions 18b are provided in a lattice pattern between the convex portions 18a.
The size of one convex portion 18a is about 7.5 mm × 7.5 m.
It has a size of m and a height of about 2 mm. In the case of the uneven shape 18B as well, similar to the uneven shape 18A, all the portions corresponding to the convex portion 18a and the concave portion 18b become the outer surface when expanded, and it is possible to greatly expand.

In the first and second embodiments, the first air bladders 14A, 14 are arranged so that both the radial artery 5 and the ulnar artery 7 of the wrist 1 can be compressed.
B, 14C, and second air bags 16A, 16B, 16C
In the "11th Autumn Meeting of the ME Society of Japan, Analysis of Adaptation Position and Size of Local Compression Cuff for Wrist Blood Pressure Measurement by Finite Element Method, Mr. Akira Riku, et al." A method of pressing only around the styloid process has been proposed. However, this document does not disclose or suggest the technique of providing the first air bag and the second air bag.

Therefore, the structure shown in each of the above embodiments can also be applied to a structure in which only the vicinity of the radial styloid process is pressed. FIG. 11 is a wrist-type blood pressure monitor cuff 1.
0 has a structure in which only the vicinity of the radial styloid process is pressed. Also in this case, the inflation of the first air bladder 14A ensures a predetermined pressure on the wrist 1 side, and the second air bladder 16A inflates in a state of being in close contact with the wrist 1, thus
The air bag 16A flexibly wraps around the tendon or the bone, so that the second air bag 16A can sneak between the radius 2 and the palmar flexor tendon 4b, and the radial artery 5 can be sufficiently compressed. Become.

(Second Embodiment) As described above, the following problems may occur in the wrist-type blood pressure monitor cuff using the first air bag and the second air bag. This point will be described with reference to FIGS. 12 and 13. 12 and 13 show cross sections along the wrist axis direction (Y1 direction in FIG. 20) when the wrist-type blood pressure monitor cuff is attached in the wrist circumferential direction (X1 direction in FIG. 20). .

For example, as shown in the schematic view of FIG.
As a result of the second bladder 16A being formed of a softer member than the first bladder 14A, the side region of the second bladder 16A has a lateral direction in which the pressure from the first bladder 14A is small (the arrow direction in the figure). ), It is possible to swell to escape.

As shown in FIG. 12, the lateral expansion of the second air bladder 16A is more often than the case where the second air bladder 16A protrudes from both sides of the first air bladder 14A toward both sides. As shown in FIG. 13, the first air bag 14
The balance of the pressurization of A is imbalanced, the second air bag 16A protrudes to one side, and the first air bag 14A moves to the second air bag 1.
Protrude toward the side opposite to 6A. As a result, it is considered that the pressure force from the first air bag 14A is not sufficiently transmitted to the surface of the living body via the second air bag 16A and the entire wrist and the radial artery 5 or the like cannot be sufficiently pressed. In particular, when the palm is moved to the front or the back and the angle of the wrist is changed, the protrusion of the second air bag 16A becomes remarkable.

Therefore, in the second embodiment, the shapes of the first air bag 14A and the second air bag 16A are improved so that such a problem does not occur. This first
Regarding the shapes of the air bag 14A and the second air bag 16A,
Hereinafter, description will be made with reference to FIGS. 14 to 20. Note that, similarly to FIGS. 12 and 13, FIGS. 14 to 19 also show cross sections along the wrist axial direction when the wrist-type sphygmomanometer cuff is mounted in the wrist circumferential direction. FIG. 20 is a plan view showing the shapes of the first air bag 14A and the second air bag 16A, which are looked up from the wrist side.

First, in the structure shown in FIG. 14, the second
The width (L2) of the air bag 16C is provided so as to be smaller than the width (L1) of the first air bag 14B. Further, as a preferred mode, the exposed dimensions (L3) of the first air bladder 14B on both sides of the second air bladder 16C are equal so that the mounting position of the second air bladder 16C is the center position of the first air bladder 14B. Is provided.

By adopting this configuration, as shown in the schematic view of FIG. 15, even when pressurized air is introduced into the first air bag 14B and the second air bag 16C, both ends of the first air bag 14B. In the portion (the area surrounded by X in the figure), the second
Since it expands so as to cover both sides of the air bag 16C, the second
It is possible to limit the lateral protrusion of the air bag 16C. As a result, the second air bag 16C can be inflated toward the wrist portion 1 side which is the living body side, and the pressure force from the first air bag 14B is sufficiently passed through the second air bag 16C to the wrist portion. It becomes possible to tell 1.

Further, as another preferable embodiment, the one shown in FIG. 16 can be mentioned. First air bag 14D shown in FIG.
Is located at the side position of the second air bag 16C, and the side air bag 14
g is provided. This side air bag 14
g is provided so that the first air bladder 14D and the internal space form an integrated air bladder, and the side air bladder 14g is inflated in the same manner as the air is introduced into the first air bladder 14D. Therefore, the side air bag 14g is made of the same material as the first air bag 14D.

As described above, in the first air bladder 14D protruding from the second air bladder 16C, the lateral protrusion of the second air bladder 16C is positively restricted to the side position of the second air bladder 16C. By providing the side wall to prevent the protrusion,
As shown in FIG. 7, it is possible to reliably limit the lateral protrusion of the second air bladder 16C. As a result, the second air bag 16C can be inflated toward the living body side, and the pressure from the first air bag 14B can be sufficiently transmitted to the living body via the second air bag 16C. . Further, since the pressure applied to the living body is transmitted by the expansion of the side air bag 14g, it is possible to apply pressure in a sufficiently wide area.

The side wall of the second air bladder 16C has a side wall for preventing the side wall of the second air bladder 16C from being positively restricted. As shown in FIG. 18, the first air bag 14
B and the third air bag 14 independent of the second air bag 16C
E is provided so as to be arranged on both sides of the second air bag 16C,
A configuration can be adopted in which air is introduced into the third air bag 14E through the air introduction pipe 14f by the air introduction tube 17 that introduces air into the first air bag 14B and the second air bag 16C. The material of the third air bag 14E is the same as that of the first air bag 14D.
A material that is harder than 6C is preferable.

Further, as still another form, as shown in FIG. 19, both side portions of the second air bag 16C are previously
The side air bag 14g shown in FIG. 16 and the side air bag 14g shown in FIG. 16 can also be obtained by providing the auxiliary side wall 14F made of urethane or other member that does not affect the contact with the living body while maintaining a relatively predetermined shape. Third air bag 14E shown in 18
It is possible to obtain the same operational effect as.

In the structure shown in the second embodiment, typically, as shown in FIG. 20, in the wrist axial direction (Y1) and the wrist circumferential direction (X1), in each axial direction, The width of the second air bag 16C is provided so as to be smaller than the width of the first air bag 14B.

As another form, the reduction of the pressure on the side in the circumferential direction of the wrist is smaller than the reduction of the pressure due to the protrusion on the side in the axial direction of the wrist. Therefore, as shown in FIGS. 21 to 23,
On the side of the wrist in the circumferential direction (X1), the second
It is also possible to employ a structure in which the air bag 16C extends beyond the first air bags 14B and 14D. The structure shown in FIG. 23 is a structure for shortening the length in the wrist circumferential direction (X1) and locally compressing the wrist,
Even in such a case, the second air bag 16 may be projected due to the movement of the wrist. Therefore, it is important that at least the second air bag 16C is projected beyond the first air bags 14B and 14D. Becomes

In addition, by providing the second air bag 16C so as to extend beyond the first air bags 14B and 14D in the wrist circumferential direction (X1), as shown in FIG. 24, the end of the second air bag 16C. Since it is possible to directly fix the portion to the belt 11 which is a fixing tool, the joining between the second air bag 16C and the first air bags 14B and 14D becomes unnecessary, improving productivity and improving maintenance. Can be achieved.

Further, as shown in FIG. 25, the second air bag 1
By providing both end portions of 6C so as to wrap around the end portions of the first air bag 14B, the first air bag 14B can be provided to the second air bag 16C.
It is also possible to fix.

Further, as shown in FIG. 26, in the region surrounded by R2, the second air bag 16C is the first air bag 14B, 1.
Although it is a structure that does not protrude from 4D, when the air introduction tube 17 is connected to this structure (particularly, the width of the bag between the first air bag 14B, 14D and the second air bag 16C (Y
(In one direction) is small), the bulges of the first air bags 14B and 14D are the same as those of the first air bags 14B and 14D and the second air bag 16C.
There is a problem of being obstructed by the air introduction tube 17 in the portion of the difference, but as shown in the area surrounded by R1, the second
In the structure in which the air bag 16C protrudes from the first air bags 14B and 14D, when the air introducing tube 17 is connected, the bulge of the first air bags 14B and 14D is not hindered by the air introducing tube 17. It becomes possible to obtain the advantage. Note that, in FIG. 26, the structures shown in the regions R1 and R2 are shown in the same drawing for the sake of convenience, but the structure shown in both the regions R1 and R2 is not disclosed.

In the structure shown in the second embodiment,
It is also possible to employ the uneven air bag structure shown in FIGS. 9 and 10.

In each of the above embodiments, the case where air is used as the fluid has been described, but the present invention is not limited to air, and other gases having similar properties (oxygen, carbon dioxide, It is also possible to use helium, etc. It is also possible to use not only gas but also liquids such as water. It needs to be prevented.

Therefore, the above-described embodiments disclosed this time are exemplifications in all respects, and are not a basis for a limited interpretation. Therefore, the technical scope of the present invention is
It is not interpreted only by the respective embodiments described above, but is defined based on the description of the claims. Further, the meaning equivalent to the scope of claims and all modifications within the scope are included.

[0063]

According to the cuff for wrist-type sphygmomanometer based on the present invention, the pressure from the first inflatable bag is applied to the wrist portion in contact with the second inflatable bag regardless of the presence of tendons or bones in the wrist. Since it will be added, it becomes possible to sufficiently compress the artery of the wrist. As a result, the lack of compressive force on the artery is resolved, and it becomes possible to measure blood pressure with high precision even with a wrist-type sphygmomanometer.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a cross-sectional structure along a longitudinal direction of a wrist-type blood pressure monitor cuff 10 according to an embodiment of the present invention before being attached to a wrist portion.

FIG. 2 is a cross-sectional view showing a state in which a wrist-type blood pressure monitor cuff 10 is attached to a wrist portion 1.

FIG. 3 is a cross-sectional view showing a state in which the wrist section 1 is compressed by the wrist-type blood pressure monitor cuff 10.

FIG. 4 is a schematic diagram showing the principle of compression of the wrist using the wrist-type blood pressure monitor cuff 10.

FIG. 5 is a cross-sectional view showing a structure of the first air bladder 14B and the second air bladder 16B when contracted in the first embodiment.

FIG. 6 is a cross-sectional view showing a structure of a first air bladder 14B and a second air bladder 16B according to the first embodiment when inflated.

FIG. 7 is a cross-sectional view showing a structure of a first air bladder 14C and a second air bladder 16C in a contracted state according to the second embodiment.

FIG. 8 is a cross-sectional view showing a structure of a first air bladder 14C and a second air bladder 16C of the second embodiment when inflated.

9A is an overall perspective view showing a first concave-convex shape on the wrist 1 side of a second air bag 16C, FIG. 9B is a sectional view taken along the line XX, and FIG. 9C is a sectional view when inflated. Is.

FIG. 10 is an overall perspective view showing a second uneven shape of the second air bag 16C on the wrist 1 side.

FIG. 11 is a cross-sectional view when the wrist-type sphygmomanometer cuff 10 is applied to a structure in which only the vicinity of the radial styloid process is pressed.

FIG. 12 is a first cross-sectional view showing a problem of the wrist-type sphygmomanometer cuff 10 according to the first embodiment.

FIG. 13 is a second cross-sectional view showing a problem of wrist-type sphygmomanometer cuff 10 according to the first embodiment.

FIG. 14 is a cross-sectional view showing the structure of a wrist-type blood pressure monitor cuff according to a second embodiment.

FIG. 15 is a first cross-sectional view showing the function and effect of the wrist-type blood pressure monitor cuff according to the second embodiment.

FIG. 16 is a cross-sectional view showing another structure of the wrist-type blood pressure monitor cuff according to the second embodiment.

FIG. 17 is a second cross-sectional view showing the function and effect of the wrist-type blood pressure monitor cuff according to the second embodiment.

FIG. 18 is a cross-sectional view showing still another structure of the wrist-type blood pressure monitor cuff according to the second embodiment.

FIG. 19 is a sectional view showing still another structure of the wrist type sphygmomanometer according to the second embodiment.

FIG. 20: First air bag 14B, D and second air bag 16C
It is a figure which shows the typical arrangement | positioning relationship with.

FIG. 21 is a first air bag 14B, D and a second air bag 16C.
It is a 1st figure which shows the other arrangement | positioning relationship with.

FIG. 22 is a first air bag 14B, D and a second air bag 16C.
It is a 2nd figure which shows another arrangement | positioning relationship with.

FIG. 23 is a first air bag 14B, D and a second air bag 16C.
It is a 3rd figure which shows another arrangement | positioning relationship with.

FIG. 24 is a first air bag 14B, D and a second air bag 16C.
It is a 1st sectional view which shows the effect in another arrangement | positioning relationship with.

FIG. 25 is a first air bag 14B, D and a second air bag 16C.
It is a 2nd sectional view showing the effect in other arrangement relations with.

FIG. 26 is a first air bag 14B, D and a second air bag 16C.
It is a 3rd sectional view showing the effect in other arrangement relations with.

FIG. 27 is an overall perspective view showing the structure of a conventional wrist blood pressure monitor 100.

FIG. 28 is a block diagram showing an internal configuration of a conventional wrist blood pressure monitor 100.

FIG. 29 is a cross-sectional structural view taken along the longitudinal direction before the wrist-type blood pressure monitor cuff 102 is attached to the wrist portion.

FIG. 30 is a cross-sectional view at the time of contraction showing a state in which the wrist-type blood pressure monitor cuff 102 is attached to the wrist portion 1.

FIG. 31 is a cross-sectional view at the time of inflation showing a state in which the wrist-type blood pressure monitor cuff 102 is attached to the wrist portion 1.

FIG. 32 is a schematic diagram of an ideal state of compression of the wrist using the wrist-type blood pressure monitor cuff.

FIG. 33 is a schematic view showing a problem of pressure on the wrist using the wrist-type blood pressure monitor cuff.

[Explanation of symbols]

1 wrist part, 2 radius, 3 ulna, 4a deep flexor tendon of the finger, 4
b long palmar flexor tendon, 5 radial artery, 6a superficial digital flexor tendon, 6b
Ulnar carpal tendon, 7 Ulnar artery, 10 Wrist blood pressure cuff, 14A, 14B, 14C, 14D 1st air bag, 1
4g Side air bag, 14E 3rd air bag, 14F Auxiliary side wall, 16A, 16B, 16C 2nd air bag, 18, 1
8A, 18B Concavo-convex shape, 18a Convex part, 18b Recessed part, 14a, 14b Side wall, 14c, 14f, 16c
Air inlet tube, 17 Air inlet tube, 100 Wrist blood pressure monitor, 101 Main body, 103 Display, 104 Measurement start switch, 105 Pressure sensor, 106 Pressure pump, 107 Exhaust valve, 108 CPU.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tomoki Inoue             Shimogyo-ku, Kyoto-shi Shioji-dori Horikawa Higashiiri Minamifudo-cho             801 OMRON LIFE SAYE CORPORATION             Institute (72) Inventor Takahide Tanaka             Shimogyo-ku, Kyoto-shi Shioji-dori Horikawa Higashiiri Minamifudo-cho             801 OMRON LIFE SAYE CORPORATION             Institute (72) Inventor Yoshihiko Sano             Shimogyo-ku, Kyoto-shi Shioji-dori Horikawa Higashiiri Minamifudo-cho             801 OMRON LIFE SAYE CORPORATION             Institute (72) Inventor Hiroyuki Kato             Shimogyo-ku, Kyoto-shi Shioji-dori Horikawa Higashiiri Minamifudo-cho             801 OMRON LIFE SAYE CORPORATION             Institute F-term (reference) 4C017 AA08 AB02 AC01 AD28 AD30

Claims (8)

[Claims] 1. A wrist type device comprising: a compression fluid bag to which a predetermined amount of fluid is supplied for compressing an artery of the wrist portion; and mounting means for mounting the compression fluid bag on the wrist portion. A cuff for a sphygmomanometer, wherein the compression fluid bag is located between the first inflatable bag and the first inflatable bag and the wrist portion, and is more elastic than the material forming the first inflatable bag. A cuff for wrist-type sphygmomanometer having a second inflatable bag made of a high-quality material. 2. The first inflatable bag is inflated mainly toward the wrist side by the supply of the fluid, and the second inflatable bag is supplied with the fluid,
The cuff for a wrist-type sphygmomanometer according to claim 1, which is inflated mainly so as to squeeze between muscles, tendons, or bones of the wrist. 3. The material of the second inflatable bag comprises thin film silicon rubber or latex.
The wrist-type blood pressure monitor cuff described in. 4. The shape of the second inflatable bag on the wrist side is an uneven shape.
The cuff for a wrist blood pressure monitor according to any one of 1. 5. The wrist type according to claim 1, wherein a width of the second inflatable bag is smaller than a width of the first inflatable bag in a cross section along the wrist axial direction. Cuff for blood pressure monitor. 6. The wrist-type sphygmomanometer cuff according to claim 5, wherein the first inflation bag protruding from the second inflation bag is provided with side walls that cover both sides of the second inflation bag. 7. The cuff for a wrist-type sphygmomanometer according to claim 6, wherein the side wall is formed of an inflatable bag into which air is introduced. 8. The wrist-type sphygmomanometer cuff according to claim 7, wherein the inflatable bag is provided so that an internal space thereof is integrated with the first inflatable bag.