KR20140067435A - Cuff module for blood pressure monitor - Google Patents

Abstract

A cuff module includes a cuff band which is wound around an upper arm, an expansion bladder which is arranged in the cuff band, a first expansion space which is arranged in the expansion bladder, a second expansion space which is arranged in the upper part of the first expansion space, a third expansion space which is arranged in the upper part of the second expansion space, and a fluid hose which is connected to the first expansion space to supply a fluid. Therefore, an expansion bladder of width corresponding to the thickness of the upper arm is expanded, thereby measuring accurate blood pressure.

Description

[0001] Cuff module for blood pressure monitor [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cuff module for a blood pressure monitor, and more particularly, to a cuff module for a blood pressure monitor capable of applying a cuff width according to the thickness of the upper arm.

Cortocopping and oscillometric methods are the most popular methods of measuring blood pressure.

When the cuff pressure is lowered slowly after the cuff pressure is increased by increasing the cuff pressure beyond the systolic blood pressure, the Cortecov tone generated at the timing of resuming the once stopped blood flow is reduced to the peripheral side The internal pressure of the cuff at that time is obtained as the systolic blood pressure value, and the internal pressure of the cuff when the Cortov tone is extinguished is obtained as the diastolic blood pressure value.

In the oscillometric approach, the cuff pressure is once raised to a high pressure higher than the systolic blood pressure, and when the cuff pressure is gradually lowered, the arterial vibration generated based on the volume change of the artery is detected and the blood pressure is determined , The shape in which the blood flow is resumed is obtained from the pressure change superimposed on the cuff pressure caused by the volume change of the artery below the cuff. This makes it unnecessary to use a microphone or a stethoscope in the Cortoc method, so that it is advantageous in that it is possible to reduce the number of parts and the manufacturing cost lower than the Cortoc method, and most of the electronic automatic blood pressure monitors today use an oscillometric method have.

An electronic automatic blood pressure monitor using an oscillometric method has a brachial type, a wrist type, and a finger type. Among these, the most accurate blood pressure test method recommended by the FDA in relation to the brachial blood pressure monitor is to apply the width of the cuff in proportion to the thickness of the upper arm.

However, in the case of a general automatic blood pressure monitor, the same cuff is applied without applying the cuff according to the thickness of the upper arm. When the cuff width is too narrow as compared with the upper arm thickness, the blood pressure is abnormally high and the cuff width And when it is too wide, it is measured to be low, so that it is difficult to accurately measure the blood pressure.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a cuff module capable of measuring a blood pressure more accurately by applying a pressure to a width corresponding to a thickness of the upper arm.

According to an aspect of the present invention, there is provided a cuff module including a cuff band wound around an upper arm, an inflated bladder disposed inside the cuff band, a divided wall dividing the inflated bladder, An expansion valve disposed on the wall for interrupting the fluid, and a fluid hose connected to the first expansion space to supply the fluid.

According to one embodiment of the present invention, the partition wall may include a first partition wall and a second expansion space that divide the first expansion space and the second expansion space, and a second partition wall that divides the third expansion space have.

According to an embodiment of the present invention, the expansion valve may include a first expansion valve disposed in the first partition wall and a second expansion valve disposed in the second partition wall.

According to an embodiment of the present invention, a sensor for measuring blood pressure may be disposed inside the cuff band.

According to an embodiment of the present invention, the width of the first expansion space may be 10 cm.

According to an embodiment of the present invention, the width of the second inflation space and the third inflation space may be 2 cm.

According to an embodiment of the present invention, the inflatable bladder may further include a brachial thickness measuring sensor for measuring the thickness of the upper arm.

According to an embodiment of the present invention, the cuff module may include a passive input part capable of manually inputting the upper arm thickness.

In the cuff module according to the present invention, the inflating bladder for pressing the blood pressure measuring region of the upper arm is not inflated to a uniform width, and the inflating bladder can be inflated to a width of the upper arm. Accordingly, since a cuff having a width corresponding to the thickness of the upper arm is provided, a more accurate blood pressure can be measured.

1 is a front view of a cuff module according to an embodiment of the present invention.
2 is a cross-sectional view of a cuff band cut along the line II 'in Fig.
Figure 3 is a front view of the expansion bladder of Figure 1;
4 is a cross-sectional view taken along line II-II 'of FIG.
Fig. 5 is a perspective view showing a state in which the cuff module of Fig. 1 is installed in the automatic blood pressure measurement apparatus. Fig.
6A and 6B are cross-sectional views of an expansion bladder according to another embodiment of the present invention.

Hereinafter, a cuff module according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the invention, and are actually shown in a smaller scale than the actual dimensions in order to explain the schematic configuration. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

On the other hand, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a front view of a cuff in accordance with an embodiment of the present invention. 2 is a cross-sectional view of a cuff band cut along the line I-I 'in Fig.

1 and 2, the cuff module 1 according to the present embodiment includes a cuff band 10, an expansion bladder 15, a first inflation space 21, a second inflation space 22, 3 inflation space 23 and a fluid hose 30.

The cuff band 10 is wrapped around the upper arm when the blood pressure is measured, and the inflated bladder 15 is disposed therein. The cuff band 10 is preferably made of a material having elasticity.

As shown in the figure, the cuff band 10 is formed by superposing a first sheet 11 and a second sheet 12, and the edges of the first and second sheets 11 and 12, Respectively. That is, the rims of the first and second sheets 11 and 12 can be sealed to each other through separate joining members. The rims of the first and second sheets 11 and 12 are joined together to form a space 14 for accommodating the expansion bladder 15.

Fasteners 13 may be disposed on both sides of the cuff band 10, respectively. The fastener 13 is engaged with the cuff band 10 when the cuff band 10 is worn, thereby fixing the cuff band 10 to the blood pressure measuring region of the upper arm. For example, the fastener 13 may be formed of a belt tape.

The inflated bladder 15 is disposed inside the cuff band 10 and is wound together with the cuff band 10 on a region for measuring the blood pressure of the upper arm and inflated by the fluid supplied through the fluid hose to measure the blood pressure of the upper arm Pressurize the site. The inflated bladder 15 is disposed in a space 14 defined by the overlapping first and second sheets 11, 12 of the cuff band 10.

The fluid hose 30 connected to the expansion bladder to supply fluid includes a passage for supplying a fluid such as gas or liquid supplied from the blood pressure monitor main body to the first, second, and third expansion spaces do.

Meanwhile, the cuff module according to the present embodiment may further include a brachial thickness measuring sensor 40. The upper arm thickness measurement sensor 40 may be disposed on the left side of the inflated bladder 15. The upper arm thickness measurement sensor 40 measures the arm circumference at the midpoint of the upper arm of the observer after the cuff band 10 is worn on the upper arm during blood pressure measurement and transmits the measured data to the blood pressure monitor body. Thus, in the blood pressure monitor main body, fluid is supplied to the first, second, or third inflation spaces according to the data on the arm circumference transmitted from the upper arm thickness measurement sensor 40.

When measuring blood pressure, the width of the cuff is usually ideally 40% wider around the midpoint of the arm or 20% wider than the diameter of the arm.

[Table 1] shows the ideal cuff width along the arm circumference at the midpoint of the upper arm during blood pressure measurement.

Arm circumference at midpoint (cm) Type of cuff Width (cm) 15-20 child 8 20-25 Dry type 10 25-30 Normal type 12 30-40 An obese adult 14

That is, when the measured data is 20 cm or more and 25 cm or less, the fluid is supplied only to the first inflation space 21. If the measured data is 25 cm or more and 30 cm or less, the first inflation space 21 and the second inflation space 22 and the fluid is supplied to the first inflation space 21, the second inflation space 22 and the third inflation space 23 when the measured data is 30 cm or more and 40 cm or less. Accordingly, the expansion bladder having an appropriate width is expanded along the circumference of the measured arm, so that the accurate blood pressure can be measured.

In addition, the cuff module according to the present embodiment can be configured in such a manner that the blood pressure is manually inputted without including the upper arm thickness measurement sensor 40 and the cuff type corresponding to the middle point arm of the upper arm of the measurer. As described above, when the cuff type is manually input, the upper arm thickness sensor 40 is not disposed on the cuff module, and an appropriate type is input by using the input button disposed on the body. Accordingly, the inflation width of the inflated bladder 15 is varied according to the input cuff type, and the accurate blood pressure can be measured.

Figure 3 is a front view of the expansion bladder of Figure 1; 4 is a cross-sectional view taken along line II-II 'of FIG.

3 and 4, the inflated bladder 15 includes a third seat 16, a fourth seat 17, a first inflation space 21, a second inflation space 22, (23), a first partition wall (24) for partitioning the first and second expansion spaces, a second partition wall (25) for partitioning the second and third expansion spaces, the first partition wall (24) , And a second expansion valve (27) disposed in the second partitioning wall (25).

The first and second dividing walls 24 and 25 are formed by bonding the third and fourth sheets 16 and 17 to each other. The first partition wall (24) separates the first inflation space (21) and the second inflation space (22). The second partition wall (25) separates the second inflation space (22) and the third inflation space (23).

The first expansion valve 26 and the second expansion valve 27 are disposed in the first partition wall 24 and the second partition wall 25 so that the fluid supplied through the fluid hose 30 . That is, the first expansion valve 26 and the second expansion valve 27 are disposed in the first partition wall 24 and the second partition wall 25, respectively, 15) is expanded in accordance with the arm circumference of the upper arm.

The first expansion valve (26) and the second expansion valve (27) are preferably formed at one end of the expansion bladder (15). As shown in Fig. 4, the first expansion valve 26 includes a through hole 28a and a cap 28b. The cap 28b interrupts the fluid and is opened while being curved by pressure as shown by the dashed line, and the fluid moves through the through hole 28a and the open cap 28b.

For example, the first expansion valve (26) and the second expansion valve (27) can be constituted by an air supply valve of a rubber material installed in a usual watering tube. That is, the first expansion valve (26) and the second expansion valve (27) may be constituted by a conventional air supply valve formed of a material having elasticity and hermeticity.

The first partition wall (24) defines a first expansion space (21) and a second expansion space (22) of the expansion bladder (15). The first inflation space 21 is connected to the fluid hose 30 to receive fluid, and has a minimum width that can be wound around the blood pressure measurement site of the upper arm. For example, the first inflation space 21 may have a minimum width of 10 cm which can be wound around a blood pressure measuring part of a dry type. The second inflation space 22 defined by the first partition wall has a width expandable by the first inflation space 21 so as to satisfy 12 cm, which is a width that can be wound around the blood pressure measurement site of the normal upper arm. In addition to 10 cm, the width of 2 cm is further expanded. That is, the second inflation space 22 may be formed in a rectangular shape having the same length as the first inflation space 21 and a width of 2 cm.

 The second partition wall (25) defines the second inflation space (22) and the third inflation space (23). Here, the third inflation space 23 is expanded at the upper portion of the second inflation space 22 to expand the inflation width expanded by the first inflation space 21 and the second inflation space 22 . The third inflation space 23 has a width of 12 cm which is expanded by the first inflation space 21 and the second inflation space 22 in order to satisfy a width of 14 cm, Further, the width of 2 cm is expanded. That is, the third inflation space 23 may be formed in a rectangular shape having the same length as the first inflation space 21 and the second inflation space 22 and having a width of 2 cm.

Fig. 5 is a perspective view showing a state in which the cuff module of Fig. 1 is installed in the automatic blood pressure measurement apparatus. Fig.

Referring to FIG. 5, the cuff module for a blood pressure monitor according to the present embodiment can be installed and used in a conventional automatic blood pressure measurement device 50. At this time, the cuff band 10 is built in the automatic blood pressure measurement device 50 and the inflatable bladder 15 is automatically inflated by the upper arm thickness measurement sensor 40 in accordance with the thickness of the upper arm. Here, since the automatic blood pressure measurement device 50 uses a conventional automatic measurement device, detailed description of the configuration will be omitted.

6A and 6B are cross-sectional views of an expansion bladder according to another embodiment of the present invention.

6A shows an expanded state of only the first expansion space 21 and FIG. 6B shows an expanded state of the first expansion space 21, the second expansion space 22, and the third expansion space 23. FIG. The expansion bladder according to the present embodiment is substantially the same as the expansion bladder described with reference to Figs. 1 to 4 except for the expansion valve. Therefore, the same reference numerals are assigned to the same components and redundant explanations are omitted.

6A and 6B, the first expansion valve 126 according to the present embodiment includes a valve body 29a for interrupting the fluid and an opening / closing button 29b for adjusting the valve body 29a. That is, the fluid flows through the fluid hose 130 to expand the first expansion space 121 of the expansion bladder 115, and the first partition wall 124 and the first expansion valve 126, do. Further, the first expansion valve opens the valve body 29a by the opening / closing button 29b when the second expansion space 122 is expanded, and supplies the fluid to the second expansion space 122. [ For example, the first expansion valve 126 may be a conventional solenoid valve operated by a power source.

The upper arm thickness measurement sensor 140 measures the arm circumference at the midpoint of the upper arm of the observer after the cuff band 10 is worn on the upper arm during blood pressure measurement and transmits the measured data to the blood pressure monitor body. In the blood pressure monitor main body, the fluid is supplied to the first, second, or third inflation spaces according to the data about the arm circumference transmitted from the upper arm thickness measurement sensor 140. At this time, when the data is data to expand the second expansion space 122, the first expansion valve 126 is opened to supply the fluid to the second expansion space 122.

Hereinafter, the operation of the cuff module for a blood pressure monitor according to the present embodiment including the above components will be described. The cuff module for a blood pressure monitor according to the present embodiment is worn on the upper arm when measuring blood pressure. Referring to FIG. 1, the cuff band 10 according to the present invention is worn around the upper arm. At this time, the cuff band 10 is wound around the upper arm and fixed by fasteners 13 disposed at both ends of the cuff band 10.

The cuff module according to the present invention recognizes the thickness of the upper arm through the upper arm thickness measurement sensor 40 disposed on the cuff band 10 when the cuff band 10 is wound on the upper arm, The expansion width of the expansion bladder is determined. Alternatively, when the upper arm thickness measurement sensor 40 is not disposed, an input section capable of manually inputting a cuff type suited to the upper arm thickness of the person measuring the blood pressure may be disposed. When manually typing the cuff type that is suitable for the upper arm thickness, the thickness of the upper arm of the person measuring the blood pressure is measured through the rulers, and then the type of the cuff type is inputted. Accordingly, since the expansion bladder 15 is inflated by the cuff width corresponding to the thickness of the upper arm, accurate blood pressure can be measured.

3, the inflated bladder 15 is divided into a first inflated space 21, a second inflated space 22, and a third inflated space 22 by a first partition wall 24 and a second partition wall 25, And is partitioned into an expansion space. The first inflation space 21 and the second inflation space 22 are communicated by a first expansion valve 26 and the second inflation space 22 and the third inflation space 23 are communicated by a second expansion valve 26, And is communicated by the expansion valve (27).

The first inflation space (21) is expanded when a blood pressure of a person having a dry-type upper arm is measured, and the second inflation space (22) is inflated when a person having a normal- 1 expanded space 21 as shown in FIG. In addition, when a person having an obese upper arm measures blood pressure, the first inflation space 21 and the second inflation space 22 are inflated and further the third inflation space is inflated. That is, when a person having a dry type upper arm measures blood pressure, the inflated bladder 15 is expanded to a width of 10 cm, and when a person having a normal type upper arm measures blood pressure, And when the person having the obese upper arm measures blood pressure, the inflated bladder 15 is inflated to a width of 14 cm.

Therefore, the expansion width of the inflated bladder 15 is varied according to the thickness of the upper arm. When a blood pressure is measured by a single-sized cuff, the blood pressure of a person with a dry upper arm is measured to be low, In the case of humans, the problem of high blood pressure can be solved. In addition, since the width to be inflated by the upper arm thickness measuring sensor is adjusted, there is no inconvenience to replace the cuff corresponding to the upper arm thickness.

As described above, in the cuff module according to the embodiment of the present invention, since the expansion bladder for pressing the blood pressure measuring part of the upper arm is not inflated to a uniform width and is expanded according to the thickness of the upper arm, There are advantages. In addition, the cuff module according to an embodiment of the present invention can be applied to a manual blood pressure monitor, an electronic blood pressure monitor, or an automatic blood pressure monitor.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

The cuff module according to the present invention improves the problem of the existing blood pressure measuring device which caused the clinical inaccuracy measurement by applying a constant pressure regardless of the thickness of the upper arm, and it is possible to measure the blood pressure that can accurately measure the blood pressure And have industrial applicability that can be used in devices.

10: cuff band 11, 12: sheet
13: fastener 15: expansion bladder
21: first expansion space 22: second expansion space
23: third expansion space 24: first partition wall
25: second partition wall 26: first expansion valve
27: second expansion valve 28a: through hole
28b: cap 29a: valve body
29b: opening / closing button 30: fluid hose
40: upper arm thickness measuring sensor 50: blood pressure measuring device

Claims (8)

Cuff band worn on upper arm
An inflating bladder disposed within the cuff band;
A partition wall for dividing the expansion bladder
An expansion valve disposed on the partition wall for controlling the fluid;
And a fluid hose connected to the inflating bladder to supply fluid. 2. The apparatus of claim 1,
A first partition wall dividing the first expansion space and the second expansion space and
And a second partition wall dividing the second expansion space and the third expansion space. 3. The expansion valve according to claim 2, wherein the expansion valve
A first expansion valve disposed in the first partition wall,
And a second expansion valve disposed in the second partition wall. The cuff module according to claim 3, wherein a sensor for measuring blood pressure is disposed inside the cuff band. 5. The cuff module according to claim 4, wherein the width of the first inflation space is 10 cm. The cuff module according to claim 4, wherein the width of the second inflation space and the third inflation space is 2 cm. The cuff module of claim 1, wherein the inflatable bladder further comprises a brachial thickness measurement sensor for measuring a thickness of the upper arm. The cuff module according to claim 1, comprising a manual input part capable of manually inputting the upper arm thickness.

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