WO2014081211A1

WO2014081211A1 - Cuff module for sphygmomanometer

Info

Publication number: WO2014081211A1
Application number: PCT/KR2013/010608
Authority: WO
Inventors: 오필성; 김원기
Original assignee: 연세대학교 원주산학협력단
Priority date: 2012-11-26
Filing date: 2013-11-21
Publication date: 2014-05-30
Also published as: KR20140067435A

Abstract

A cuff module comprises: a cuff band wrapped around the upper arm to be worn thereon; an expansion bladder arranged inside the cuff band; a first expansion space arranged inside the expansion bladder; a second expansion space arranged at an upper portion of the first expansion space; a third expansion space arranged at an upper portion of the second expansion space; and a fluid hose connected to the first expansion space to supply fluid thereto. Therefore, it is possible to accurately measure blood pressure since the expansion bladder having the proper width for the thickness of the upper arm is expanded.

Description

Cuff Module for Sphygmomanometer

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 that can be applied to the width of the cuff according to the upper arm thickness.

Cortkov and oscillometric methods are the most popular methods for measuring blood pressure.

The Cortkov method discontinues the cuff pressure above the systolic blood pressure and stops the blood flow once, and when the cuff pressure is gradually lowered, the distal side that becomes the downstream side of the cuff generated when the blood flow stops once the cuff is resumed. The internal pressure of the cuff for blood pressure measurement at that time is determined as the systolic blood pressure value, and the internal pressure of the cuff at the time when the Cortkov sound disappears is obtained as the diastolic blood pressure value.

The oscillometric method raises the cuff pressure to a higher pressure than the systolic blood pressure once, detects the arterial vibration generated based on the arterial volume change when gradually lowering the cuff pressure, and determines the blood pressure by the amplitude change of the vibration. In this way, the shape in which blood flow resumes is obtained from the pressure change superimposed on the cuff pressure generated by the volume change of the artery under the cuff. This eliminates the need for a microphone or stethoscope needed for the Cortkov method, which results in fewer parts and lower manufacturing costs than the Cortkov method. Today, most electronic automatic blood pressure monitors use an oscillometric method. have.

Electronic automatic sphygmomanometers using an oscillometric approach include the upper arm, wrist and finger. Of these, the most accurate blood pressure diagnosis recommended by the FDA in relation to the brachial sphygmomanometer is to apply the width of the cuff in proportion to the thickness of the 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 width of the cuff is too narrow for the upper arm thickness, the blood pressure is abnormally high and the cuff width is higher than the upper arm thickness. If it is too wide, because it is measured low, accurate blood pressure measurement is difficult.

Accordingly, the technical problem of the present invention was conceived in this respect, and an object of the present invention is to provide a cuff module that can measure a more accurate blood pressure by applying pressure to a width corresponding to the upper arm thickness.

The cuff module according to an embodiment for realizing the object of the present invention is a cuff band wound around the upper arm, an expansion bladder disposed inside the cuff band, a partition wall for dividing the expansion bladder, the division An expansion valve disposed on the wall to intercept the fluid and a fluid hose connected to the first expansion space to supply the fluid.

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

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

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

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

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

According to one embodiment of the invention, the expansion bladder may further comprise a upper arm thickness measurement sensor for measuring the thickness of the upper arm.

According to one embodiment of the invention, the cuff module may include a manual input unit that can manually input the upper arm thickness.

In the cuff module according to the present invention, the expansion bladder pressurizing the blood pressure measurement site of the upper arm is not expanded to a uniform width, and the expansion bladder may be expanded to the width of the upper arm. Accordingly, since a cuff of a width corresponding to the thickness of the upper arm is provided, more accurate blood pressure can be measured.

1 is a front view of a cuff module according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the cuff band taken along the line II ′ of FIG. 1.

3 is a front view of the expansion bladder of FIG.

4 is a cross-sectional view taken along the line II-II 'of FIG. 3.

5 is a perspective view illustrating a state in which the cuff module of FIG. 1 is installed in an automatic blood pressure measuring apparatus.

6a and 6b are cross-sectional views of the expansion bladder according to another embodiment of the present invention.

* Explanation of the sign

10: cuff band 11, 12: seat

13: fastener 15: expansion bladder

21: first expansion space 22: second expansion space

23: third expansion space 24: the first partition wall

25: second dividing wall 26: first expansion valve

27: second expansion valve 28a: through hole

28b: cap 29a: valve body

29b: opening and closing button 30: fluid hose

40: upper arm thickness measuring sensor 50: blood pressure measuring device

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

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. In the accompanying drawings, the dimensions of the structure is shown to be larger than the actual size for clarity of the invention, or to reduce the actual size to illustrate the schematic configuration. Terms such as first and second 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 the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, 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. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is a front view of a cuff according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the cuff band taken along the line II ′ of FIG. 1.

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

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

As shown in the cuff band 10, the first sheet 11 and the second sheet 12 are overlapped with each other, and the edges of the overlapped first and

second sheets

11 and 12 are bonded to each other. It is formed. That is, the edges of the first and

second sheets

11 and 12 may be sealed to each other through separate bonding members. The edges of the first and

second sheets

11 and 12 are joined to form a space 14 to accommodate the expansion bladder 15.

Fasteners 13 may be disposed on both sides of the cuff band 10, respectively. The fasteners 13 are coupled to each other when the cuff band 10 is worn to fix the cuff band 10 to the blood pressure measurement site of the upper arm. For example, the fastener 13 may be formed of Velcro tape.

The expansion bladder 15 is disposed inside the cuff band 10 is wound around the blood pressure measurement site of the upper arm together with the cuff band 10 and inflated by a fluid supplied through a fluid hose to measure the upper blood pressure of the upper arm. Pressurize the site. The expansion bladder 15 is disposed in the space 14 formed by the overlapping first and

second sheets

11 and 12 of the cuff band 10.

The fluid hose 30 connected to the expansion bladder to supply fluid has a passage for supplying a fluid such as gas or liquid supplied from a blood pressure monitor body (not shown) to the first, second and third expansion spaces. do.

On the other hand, the cuff module according to the present embodiment may further include a upper arm thickness measurement sensor 40. The upper arm thickness measurement sensor 40 may be disposed on the left side of the expansion bladder 15. The upper arm thickness measurement sensor 40 measures the arm circumference of the middle point of the upper arm of the measurer 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, the blood pressure monitor body supplies fluid to the first, second or third expansion spaces according to the data about the arm circumference transmitted from the upper arm thickness measurement sensor 40.

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

Table 1 shows the width of the ideal cuff along the arm circumference of the middle of the upper arm during blood pressure measurement.

Table 1

Arm circumference at the midpoint (cm)	Type of cuff	Width (cm)
15-20	child	8
20-25	Skinny	10
25-30	Normal type	12
30-40	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 expansion space 21. When the measured data is 25 cm or more and 30 cm or less, the first expansion space 21 and the second expansion space ( 22) and supplies the fluid to the first expansion space 21, the second expansion space 22 and the third expansion space 23, if the measured data is 30cm or more and 40cm or less. Accordingly, according to the measured arm circumference, the expansion bladder of the appropriate width is inflated, thereby making it possible to accurately measure blood pressure.

In addition, the cuff module according to the present embodiment may be configured by manually inputting the cuff type corresponding to the arm circumference of the upper arm of the upper arm without the upper arm thickness measuring sensor 40. As described above, in the case of manually inputting the cuff type, the upper arm thickness sensor 40 is not disposed in the cuff module, and an appropriate type is input using an input button disposed in the main body. Accordingly, the expanded width of the expansion bladder 15 is changed according to the input cuff type, so that accurate blood pressure can be measured.

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

3 and 4, the expansion bladder 15 includes a third sheet 16, a fourth sheet 17, a first expansion space 21, a second expansion space 22, and a third expansion. A space 23, a first partition wall 24 that divides the first and second expansion spaces, a second partition wall 25 that divides the second and third expansion spaces, and the first partition wall 24. The first expansion valve 26 is disposed in the, and the second expansion valve 27 is disposed on the second partition wall (25).

The first and

second partition walls

24 and 25 are formed by joining the third and

fourth sheets

16 and 17 to each other. The first dividing wall 24 partitions the first expansion space 21 and the second expansion space 22. The second dividing wall 25 partitions the second expansion space 22 and the third expansion space 23.

The first expansion valve 26 and the second expansion valve 27 are disposed on the first partition wall 24 and the second partition wall 25, respectively, and supply fluid through the fluid hose 30. To crack down. That is, the first expansion valve 26 and the second expansion valve 27 are disposed on the first dividing wall 24 and the second dividing wall 25, respectively, and control the fluid to control the expansion bladder ( Inflate the bulge of 15) to the arm circumference of the forearm.

The first expansion valve 26 and the second expansion valve 27 is 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 opens while being bent by pressing as shown by the broken 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 may be composed of a rubber air supply valve installed in a conventional tube for swimming. That is, the first expansion valve 26 and the second expansion valve 27 may be composed of a conventional air supply valve formed of a material having elasticity and hermeticity.

The first dividing wall 24 partitions the first expansion space 21 and the second expansion space 22 of the expansion bladder 15. Here, the first expansion space 21 is connected to the fluid hose 30 to receive the fluid, and is formed with a minimum width that can be wound around the blood pressure measurement site of the upper arm. For example, the first expansion space 21 may be 10 cm as the minimum width that can be wound around the blood pressure measurement site of a dry adult. The second expansion space 22 partitioned by the first dividing wall is expanded by the first expansion space 21 to satisfy 12 cm, which is a width that can be wound around the blood pressure measurement site of the upper arm of a normal adult. In addition to 10 cm, an additional 2 cm width is expanded. That is, the second expansion space 22 may be formed in a rectangular shape having a width of 2 cm at the same length as the first expansion space 21.

The second dividing wall 25 partitions the second expansion space 22 and the third expansion space 23. Here, the third expansion space 23 is expanded in the upper portion of the second expansion space 22 to expand the expansion width is expanded by the first expansion space 21 and the second expansion space (22). . The third expansion space 23 is in addition to the width 12cm inflated by the first expansion space 21 and the second expansion space 22 to satisfy the width 14cm that can be wound around the blood pressure measurement site of the upper arm of an obese adult Further expand the width of 2 cm. That is, the third expansion space 23 may be formed in a rectangular shape having a width of 2 cm at the same length as the first expansion space 21 and the second expansion space 22.

Referring to FIG. 5, the cuff module for a blood pressure monitor according to the present embodiment may be installed and used in a conventional automatic blood pressure measuring apparatus 50. At this time, the cuff band 10 is embedded in the automatic blood pressure measuring device 50, by the upper arm thickness measurement sensor 40 automatically inflates the expansion bladder 15 to match the thickness of the upper arm. Here, since the automatic blood pressure measuring device 50 uses a conventional automatic measuring device, a detailed configuration description thereof will be omitted.

FIG. 6A illustrates an expanded state of only the first expansion space 21, and FIG. 6B illustrates an expanded state of the first expansion space 21, the second expansion space 22, and the third expansion space 23. 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 given to the same configuration, and duplicate descriptions are omitted.

6A and 6B, the first expansion valve 126 according to the present exemplary embodiment includes a valve body 29a for controlling a fluid and an opening / closing button 29b for adjusting the valve body 29a. That is, the fluid is introduced through the fluid hose 130 to expand the first expansion space 121 of the expansion bladder 115, intermittent by the first partition wall 124 and the first expansion valve 126. do. In addition, when the first expansion valve expands the second expansion space 122, the valve body 29a is opened by the opening / closing button 29b to supply fluid to the second expansion space 122. For example, the first expansion valve 126 may be configured as a conventional solenoid valve operated by a power source.

The upper arm thickness measurement sensor 140 measures the arm circumference of the middle point of the upper arm of the upper arm 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, the blood pressure monitor body supplies fluid to the first, second or third expansion spaces according to data about the arm circumference transmitted from the upper arm thickness measurement sensor 140. In this case, when the data is data to expand the second expansion space 122, the first expansion valve 126 is opened to supply fluid to the second expansion space 122.

Hereinafter will be described the operation of the cuff module for a blood pressure monitor according to the present embodiment including the above components. The cuff module for a blood pressure monitor according to this embodiment is worn on the upper arm when measuring blood pressure. Referring to Figure 1, the cuff band 10 according to the present is worn around the upper arm. At this time, the cuff band 10 is wound around the upper arm and is 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 around the upper arm, and the recognized upper arm thickness. Determine the expansion width of the expansion bladder. Alternatively, when the upper arm thickness measurement sensor 40 is not disposed, an input unit for manually inputting a cuff type suitable for the upper arm thickness of the person measuring blood pressure may be disposed. In the case of manually inputting the cuff type corresponding to the thickness of the upper arm, the upper arm thickness of the person measuring blood pressure is measured through a tape measure, and then the corresponding cuff type is input. Therefore, since the expansion bladder 15 is expanded by the cuff width corresponding to the upper arm thickness, accurate blood pressure can be measured.

Referring to FIG. 3 again, the expansion bladder 15 is formed by the first dividing wall 24 and the second dividing wall 25 by the first expansion space 21, the second expansion space 22, and the third expansion space. It is divided into expansion space. The first expansion space 21 and the second expansion space 22 communicate with the first expansion valve 26, the second expansion space 22 and the third expansion space 23 is a second It is communicated by the expansion valve 27.

The first expansion space 21 is expanded when measuring the blood pressure of a person having a dry upper arm, and the second expansion space 22 is the second expansion space when a person having a normal upper arm measures blood pressure. 1 is expanded together with the expansion space (21). In addition, when a person with an obese upper arm measures blood pressure, the first expansion space 21 and the second expansion space 22 are expanded, and the third expansion space is further expanded. That is, when the person having a dry upper arm measures blood pressure, the inflated bladder 15 is inflated to a width of 10 cm, and when the person having a normal upper arm measures blood pressure, the inflated bladder 15 is 12 cm. Inflated in width, when the person with an obese upper arm measures the blood pressure, the expansion bladder 15 is inflated to a width of 14cm.

Therefore, the expansion width of the expansion bladder 15 is changed according to the thickness of the upper arm, in the case of a person having a dry upper arm when measuring the blood pressure with a cuff composed of a single size, the blood pressure is low and the upper arm has an upper arm In humans, high blood pressure can be solved. In addition, the width that is expanded by the upper arm thickness measurement sensor is adjusted so that there is no inconvenience to replace the cuff for the upper arm thickness.

As described above, in the cuff module according to an embodiment of the present invention, the expansion bladder pressurizing the blood pressure measurement site of the upper arm does not expand to a uniform width, but expands to the thickness of the upper arm, so that accurate blood pressure can be measured. There is an advantage. 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 measuring device.

While the foregoing has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

The cuff module according to the present invention improves the problem of the conventional blood pressure measuring device that caused the clinical inaccuracy measurement by applying a constant pressure irrespective of the thickness of the upper arm, blood pressure measurement that can measure the correct blood pressure with the lowest measurement error Has industrial applicability that can be used in the device.

Claims

Cuff band wound around the upper arm

Expansion bladder disposed inside the cuff band

Partition wall for dividing the expansion bladder

An expansion valve disposed on the dividing wall to control the fluid;

And a fluid hose connected to the expansion bladder to supply a fluid.
The method of claim 1, wherein the partition wall

A first dividing wall dividing the first expansion space and the second expansion space;

And a second dividing wall dividing the second expansion space and the third expansion space.
The method of claim 2, wherein the expansion valve

A first expansion valve disposed on the first partition wall;

And a second expansion valve disposed on the second dividing wall.
The cuff module of claim 3, wherein a sensor for measuring blood pressure is disposed in the cuff band.
The cuff module of claim 4, wherein the first expansion space has a width of 10 cm.
The cuff module of claim 4, wherein a width of the second expansion space and the third expansion space is 2 cm.
The cuff module of claim 1, wherein the expansion bladder further comprises an upper arm thickness sensor for measuring the upper arm thickness.
The cuff module of claim 1, further comprising a manual input unit capable of manually inputting the upper arm thickness.