JP2000083910A - Pressing belt for measuring blood pressure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressing belt for measuring blood pressure that a pair of inner wall surfaces of a sheet member constituting an expanding bag are adhered to each other in spite of being stored for a long period. SOLUTION: Relating to the pressing belt, since a plurality of projecting lines 66 crossing with each other are arranged respectively parallel on the mutually opposed inner wall surfaces 62 and 64 of a pair of an outer peripheral side sheet member 50 and an inner peripheral side sheet member 52 constituting the expanding bag 14 and the projecting lines 66 are brought into point contact with each other, the member 50 and the member 52 are substantially prevented from being adhered to each other in spite of being stored for a long period. Thus, the advantage of the system is that the bag 14 suitably expands and a trouble in measuring blood pressure is not caused at the time of starting use of the pressing belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compression band for measuring blood pressure which is wound cylindrically to compress a part of a living body when measuring blood pressure.

[0002]

2. Description of the Related Art An inflatable inflatable bladder having a flat shape is provided at least in a portion in a longitudinal direction, and is wrapped in a cylindrical shape around an outer periphery of a part of a living body in order to compress a part of the living body when measuring blood pressure. A compression band for blood pressure measurement of a type in which a pressurized gas is supplied into the inflatable bag in a closed state is known. In such a compression band, for example, a flat inflatable bag made of a relatively thin soft synthetic resin sheet or a rubber sheet is housed in a cloth band-shaped base made of a synthetic resin fiber folded in two. Alternatively, the airtight and flat inflatable bag is integrally provided by a high-frequency welding in a part of a band-shaped base made of a soft synthetic resin sheet folded in two. The inflatable bag of the compression band for measuring blood pressure is connected via a flexible hose to a blood pressure measuring device for monitoring a patient in a ward or measuring the blood pressure of an outpatient, for example. When measuring blood pressure, for example, a pressure gas is supplied via a flexible hose connected to an inflation bag while being wound around the upper arm of a living body, and the upper arm of the living body is compressed by a compression band.

[0003]

By the way, the compression band for measuring blood pressure as described above is folded or overlapped during storage until its use, so that the sheet member forming the inflatable bag is opposed to the sheet member. In many cases, a pair of opposed inner wall surfaces of the sheet member constituting the inflatable bag are left in contact with each other for a long time in a state where pressure is applied to the surface.
However, since a soft synthetic resin sheet such as a vinyl chloride sheet or a rubber sheet is often used for a relatively thin sheet member constituting the inflatable bag, the pair of inner wall surfaces may be kept during relatively long-term storage. At the beginning of use, the inflation bag did not normally inflate due to the mutual adhesion, and it was sometimes impossible to measure the blood pressure.

On the other hand, it is conceivable to disperse inorganic or metal oxide powder for preventing adhesion in the inflatable bag. However, in such a case, it is impossible to apply to the compression band because the operation of the control valve that changes the pressure in the inflation bag or controls the exhaust of the gas in the inflation bag may be impaired. .

[0005] The present invention has been made in view of the above circumstances, and it is an object of the present invention that even when the sheet is stored for a long period of time, a pair of inner wall surfaces of the sheet member constituting the inflatable bag are mutually in contact. It is an object of the present invention to provide a compression band for measuring blood pressure, which does not adhere to the device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a flattened inflatable inflatable bladder at least in a part of the longitudinal direction so that a living body can be measured when measuring blood pressure. In a compression band for blood pressure measurement of a type in which a pressurized gas is supplied into the inflatable bag in a state of being wound in a cylindrical shape around a part of the living body to compress a part thereof,
A plurality of projections for providing point contact with each other at a plurality of locations are provided on a pair of opposed inner wall surfaces of the sheet member constituting the inflatable bag.

[0007]

In this way, a pair of opposed inner wall surfaces of the sheet member constituting the inflatable bag have a plurality of convex portions for making point contact with each other at a plurality of points on the pair of inner wall surfaces. Since the portions are provided, even if the sheet member is formed of a soft sheet such as a vinyl chloride sheet or a rubber sheet, mutual adhesion is substantially prevented. For this reason, there is an advantage that the inflation bag expands favorably at the start of use of the compression band, and does not hinder blood pressure measurement.

[0008]

In another aspect of the present invention, preferably, the protrusions are located parallel to each other at a predetermined interval on one and the other of the pair of inner wall surfaces, and the pair of inner wall surfaces face each other. In the state, it is a plurality of ridges provided in directions intersecting each other.
With this configuration, the plurality of ridges that intersect with each other are in point contact with each other when the inflatable bag is assembled to be in an opposed state, so that a pair of opposed sheet members constituting the inflatable bag are opposed to each other. The mutual adhesion of the inner wall surfaces is substantially prevented.

Preferably, the protrusions are a plurality of independent protrusions integrally protruding from at least one of the pair of inner wall surfaces toward the other by a predetermined height. With this configuration, when the inflatable bladders are assembled to be in an opposed state, they come into point contact with each other, so that the pair of inner wall surfaces of the sheet members constituting the inflatable bladder substantially adhere to each other. Is prevented. In addition, since the projections protrude independently from the inner wall surface, there is an advantage that the flexibility of the inflation bag is not affected.

[0010]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows the configuration of a blood pressure measuring device 12 having a compression band 10 according to an embodiment of the present invention. In the figure, a pressure sensor 16 and an exhaust control valve 18 are connected to an inflation bag 14 of a compression band 10 and a switching valve 2.
0 is connected to the air pump 22. The pressure sensor 16 detects the pressure in the inflatable bladder 14 and outputs a pressure signal SP representing the pressure. The exhaust control valve 18
Functions as compression pressure control means, and controls the flow cross-sectional area to slowly or rapidly exhaust the air in the expansion bag 14. The switching valve 20 is an electromagnetic switching valve that is switched between a compression-side position and a suction-side position in order to function as a bag-part contracting means. In the compression-side position, the inflation bag 14 of the compression band 10 is And the suction port of the air pump 22 is communicated with the atmosphere.
Is communicated with the suction port of the air pump 22 and the discharge port of the air pump 22 is communicated with the atmosphere.

The low-pass filter 24 includes a pressure sensor 16
The cuff pressure signal SK representing the compression pressure of the compression band 10 is discriminated and output from the pressure signals SP output from the CPU 30 and supplied to the CPU 30 via the A / D converter 26. The band-pass filter 28 discriminates and outputs a pulse wave signal SM, which is a pressure vibration generated in synchronization with the heartbeat, from the pressure signal SP output from the pressure sensor 16, and outputs the signal through the A / D converter 26. To the CPU 30.

The CPU 30 includes a ROM 32, a RAM 3
4, together with the interface 36 and the like, constitutes a microcomputer, that is, an arithmetic control circuit 37 functioning as blood pressure value determining means, and processes input signals in accordance with a program stored in the ROM 32 in advance while utilizing the storage function of the RAM 34. The display 38 displays the blood pressure value and controls the exhaust control valve 18, the switching valve 20, and the air pump 22. The CPU 30 includes:
A start signal MS from the start push button switch 40, a stop signal MT from the stop push button switch 42, and a start signal CS from the start signal generator 44 are supplied, and the start push button switch 40 and the start signal generator 44 are supplied. Are selectively activated by a manual / auto switch 46. The activation signal generator 44 includes, for example, a well-known flip-flop circuit, and is configured to repeatedly generate the activation signal CS according to a preset period of several minutes to several tens minutes by a setting device (not shown). It is configured.

The CPU 30 has a start signal C for blood pressure measurement.
When S is supplied, according to a normal blood pressure measurement procedure,
Immediately, pressurized gas is supplied to the inflation bag 14 in order to rapidly pressurize the inflation bag 14 of the compression band 10, and the pressure in the inflation bag 14 reaches a target pressure increase value set sufficiently higher than the maximum blood pressure value in advance. Then, the pressure rise in the inflation bag 14 is stopped, and the pressure gas in the inflation bag 14 is gradually exhausted to gradually reduce the pressure at a substantially constant speed. CPU
The display 30 determines the blood pressure value by the so-called oscillometric method during the period in which the blood pressure is gradually lowered.
To be displayed. That is, the pulse wave amplitude, which is the pressure vibration in the inflatable bladder 14, is detected through the band-pass filter 28,
When the pulse wave amplitude changes suddenly, the inflation bladder 14
Are determined and displayed as systolic and diastolic blood pressure values. In addition, the CPU 30 sends a pressurized gas to the inflatable bladder 14 to rapidly increase the pressure of the inflatable bladder 14 of the compression band 10.
During the period of supply to the air pump, it is determined whether or not the pressure increase rate detected by the pressure sensor 16 is abnormal exceeding a predetermined criterion value. Stop 22 and
An error display indicating that the hose 60 is bent or the like is output.

FIG. 2 is a diagram showing an outer peripheral surface in a state where the compression band 10 is developed on a plane, and FIG. 3 is a diagram showing an inner peripheral surface in a state where the compression band 10 is developed on a plane. As shown in FIGS. 2 and 3, the compression band 10 of the present embodiment is
A woven cloth woven with synthetic fibers lined with a soft vinyl chloride layer or the like, a flexible resin strip such as a soft vinyl chloride sheet or a nylon sheet, etc. Inner peripheral side sheet member 5
2 are joined to each other at their outer peripheral edges by a method such as an adhesive or high-frequency welding to form a longitudinal and bag-like shape.

Inside one end of the compression band 10 in the longitudinal direction, an airtight rectangular flat inflatable bag 14 having a length substantially equal to that of the compression band 10 is provided. It is composed of a side sheet member 50 and an inner peripheral side sheet member 52. Further, a hose 60 made of an elastic member such as vinyl chloride, natural or synthetic rubber, or the like is integrally connected to the inflatable bag 14 by bonding, thermocompression bonding, or the like with its tip inserted. . A large number of loops implanted on the surface are provided at the end of the outer peripheral surface of the compression band 10 on the side of the inflatable bag 14 and at the end of the inner peripheral surface of the compression band 10 on the side opposite to the inflatable bag 14. A pair of fasteners 54 and 56, each of which is detachably bonded by engaging with a plurality of hooks made of elastically deformable synthetic resin implanted on the surface so as to engage with the fiber, are fixedly provided. ing. The pair of fasteners 54 and 56 are bonded to each other, so that the compression band 10 is cylindrical so that the end opposite to the inflation bag 14 is overlapped with the outer end of the inflation bag 14 in the upper arm of the living body. It is wound in a shape.

A pair of opposed inner wall surfaces 62 and 64 of the outer peripheral sheet member 50 and the inner peripheral sheet member 52 constituting the inflatable bag 14 are provided with the inner wall surfaces 62 and 6.
The protrusions 66 functioning as a plurality of protrusions for making point contact with each other at a plurality of positions 4 are provided. The ridge 66 is formed by the pair of inner wall surfaces 62 and 64.
One and the other are positioned parallel to each other at a predetermined interval, and when the pair of inner wall surfaces 62 and 64 face each other, the pair of inner wall surfaces 62 and 64 are provided respectively. The ridges 66 provided on the inner wall surface 62 and the ridges 66 provided on the inner wall surface 64 make point contact at their intersection.

In the inflatable bag 14, for example, a sheet member having a ridge 66 shown in FIG. 5 on the entire surface is bent along a fold line 68 shown by a dotted line, and the periphery other than the fold line 68 is thermocompression-bonded. It is suitably configured by welding by ultrasonic pressure bonding. The sheet member is manufactured, for example, by passing a roller having an oblique groove corresponding to the ridge 66 in the manufacturing process.

As described above, according to the compression band 10 of the present embodiment, the opposing inner wall surfaces 62 and 64 of the pair of the outer peripheral sheet member 50 and the inner peripheral sheet member 52 constituting the inflatable bag 14. A plurality of ridges 66 crossing each other are provided in parallel, and the ridges 66 are in point contact with each other. Therefore, even if the ridges 66 are stored for a long period of time, the outer peripheral side sheet member 50 and the inner peripheral side Adhesion of the sheet members 52 to each other is substantially prevented. For this reason, when the compression band 10 is started to be used, the inflatable bag 14 is suitably inflated, and there is an advantage that the blood pressure measurement is not hindered.

Next, another embodiment of the present invention will be described. In the following description, the same parts as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the compression band 10 of the above-described embodiment, a plurality of ridges are formed on the opposed inner wall surfaces 62 and 64 of the pair of outer peripheral side sheet member 50 and inner peripheral side sheet member 52 constituting the inflatable bag 14. 66 are formed in a direction intersecting each other, but instead of the ridges 66, at least one of the opposed inner wall surfaces 62 and 64 of the pair of outer peripheral side sheet member 50 and inner peripheral side sheet member 52. A plurality of independent projections integrally projecting from one side to the other by a predetermined height may be provided. In the examples shown in FIGS. 6, 7, and 8, respectively, a large number of cylindrical projections independent from each other are provided from the inner wall surface 64 of the inner peripheral sheet member 52 to the inner wall surface 62 of the outer peripheral sheet member 50. 70, a conical protrusion 72, and a hemispherical protrusion 74 are integrally provided.

In the embodiment shown in FIG.
A concave hole 76 is formed on the outer wall surface of the inner peripheral side sheet member 52 where the 4 is formed and on the back surface of the hemispherical projection 74. This concave hole 76 is provided with a concave hole corresponding to the shape of the hemispherical protrusion 74 on one of a pair of molds or rollers that form the hemispherical protrusion 74 on the inner peripheral side sheet member 52, and the concave hole 76 on the other. Are formed simultaneously with the hemispherical projections 74 by providing the hemispherical projections corresponding to the shape of. In the present embodiment, the flexibility of the inner peripheral side sheet member 52 is not impaired by the presence of the hemispherical projection 74, and the flexibility is enhanced.

While the embodiment of the present invention has been described with reference to the drawings, the present invention can be applied to other embodiments.

For example, the inflation bag 14 of the above embodiment is
Although a part of the compression band 10 in the longitudinal direction is formed, a flat inflatable bag made of rubber or the like is accommodated in a part of the longitudinal direction in the cloth-like synthetic resin fiber band-shaped base formed in two folds. It is possible to use a compression band of a different type.

In the compression band 10 of the above-described embodiment, the inflatable bag 14 is provided in a part of the longitudinal direction, but the inflatable bag 14 may be provided in substantially the entire longitudinal direction.

In the above-described embodiments of FIGS. 6, 7 and 8, a large number of independent members are moved from the inner wall surface 64 of the inner peripheral sheet member 52 to the inner wall surface 62 of the outer peripheral sheet member 50. Columnar projection 70, conical projection 72, hemispherical projection 7
4 are integrally formed, but the columnar protrusion 70, the conical protrusion 72, and the hemispherical protrusion 74 may be protruded from the inner wall surface 62 of the outer peripheral side sheet member 50. It may project from both the wall surfaces 62 and 64.

Although the compression band 10 of the above-mentioned embodiment has a linearly extending longitudinal shape, it may be a curved longitudinal shape as a whole.

Although not enumerated one by one, the present invention can be variously modified without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a blood pressure measurement device using a compression band according to an example of the present invention.

FIG. 2 is a diagram showing an outer peripheral surface in a state where the compression band of FIG. 1 is developed in a plane.

FIG. 3 is a diagram showing an inner peripheral surface in a state where the compression band of FIG. 1 is developed in a plane.

FIG. 4 is a partial cross-sectional view of an inflatable bladder for describing a main part of the compression band of FIGS. 2 and 3;

5 is an exploded partial perspective view showing a sheet member constituting the inflatable bag for explaining the structure of the inflatable bag of FIG. 4;

FIG. 6 is a partial cross-sectional view showing a configuration of an inflation bag according to another embodiment of the present invention, and is a view corresponding to FIG.

FIG. 7 is a partial sectional view showing a configuration of an inflation bag according to another embodiment of the present invention, and is a view corresponding to FIG.

FIG. 8 is a partial sectional view showing a configuration of an inflation bag according to another embodiment of the present invention, and is a view corresponding to FIG.

[Description of sign]

10: compression band 14: inflatable bag 50: outer peripheral side sheet member, 52: inner peripheral side sheet member (sheet member) 62, 64: inner wall surface 66: convex ridge (convex portion) 70: columnar convex (convex portion) 72: Conical protrusion (convex portion) 74: Hemispherical protrusion (convex portion)

Claims (3)

[Claims] An inflatable inflatable bladder having a flattened shape is provided at least in a part of a longitudinal direction, and is wrapped in a cylindrical shape around a part of the living body to compress a part of the living body when measuring blood pressure. In the compression band for blood pressure measurement, in which a pressurized gas is supplied into the inflatable bag in a state where the inflated bag is formed, a point contact is made at a plurality of points with a pair of opposed inner wall surfaces of a sheet member constituting the inflatable bag. A compression band for measuring blood pressure, comprising a plurality of projections for causing the pressure band to be provided. 2. The convex portion is located parallel to each other at a predetermined interval on one and the other of the pair of inner wall surfaces,
The compression band for blood pressure measurement according to claim 1, wherein the pair of inner wall surfaces are a plurality of ridges provided in a direction intersecting each other when the pair of inner wall surfaces face each other. 3. The blood pressure according to claim 1, wherein the protrusions are a plurality of independent protrusions integrally protruding by a predetermined height from at least one of the pair of inner wall surfaces toward the other. Compression band for measurement.