JP2600550Y2 - Compression band for blood pressure measurement - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compression band wound in a cylindrical shape to compress a part of a living body when measuring blood pressure.

[0002]

2. Description of the Related Art A compression band wound in a cylindrical shape to compress a part of a living body when measuring blood pressure is known. Such a compression band is formed by accommodating a rubber inflatable bag in a two-fold nylon resin cloth band, or in a two-fold vinyl resin sheet band. Is formed by providing an airtight bag part by high frequency welding.

[0003] When monitoring a patient in a ward, the cuff for blood pressure measurement connected to the blood pressure measurement device may be kept wound around the patient, and blood pressure may be measured continuously at a predetermined cycle. is there. In such a case, the wrap around the blood pressure measurement cuff causes humidification of the skin that is in continuous contact with the cuff. There was an inconvenience of giving.

[0004]

[Problem to be solved by the present invention]
As described in Japanese Patent Publication No. 2-170002, it has been proposed to provide a flexible bag provided with a number of holes for discharging air on the inner peripheral side of the compression band. However, in such a compression band, in a state wound around the living body, particularly the hole located on the lower side of the living body is closed by the living body, and the skin in that part comes into contact with the flexible bag and easily becomes stuffy. And no sufficient stuffiness prevention effect was obtained. In addition, there is a disadvantage that the blood pressure measurement accuracy is affected because uniform compression from the compression band to the living body is impeded by the flexible bag further provided on the inner peripheral side of the compression band.

The present invention has been made in view of the above circumstances, and its purpose is to prevent skin stuffiness even if it is wrapped around a part of a living body for a long time when measuring blood pressure. Another object of the present invention is to provide a cuff for blood pressure measurement which does not impair blood pressure measurement accuracy.

[0006]

[0007]

[0008]

It is a gist of the present invention for achieving the above object In order to achieve the above, it includes an inner circumferential sheet member and an inflatable bag portion made up of the outer peripheral side sheet member, at the time of blood pressure measurement In a compression band wound in a cylindrical shape to compress a part of a living body, a water-absorbent resin sheet and a porous sheet holding the water-absorbent resin sheet are laminated on the surface of the inner peripheral sheet member. It is in.

[0009]

In this way, the water-absorbent resin sheet and the porous sheet holding the water-absorbent resin sheet are laminated on the surface of the inner peripheral side sheet member of the inflatable bag portion. In addition, since the water that has come out of the part of the skin of the living body that is in contact with the inner peripheral sheet member passes through the porous sheet and is absorbed by the water-absorbing resin sheet, the stuffiness is reduced. In addition, since a flexible bag having a hole for releasing air is not provided on the inner peripheral side of the compression band for compressing the living body, uniform compression by the compression band is secured, and blood pressure measurement accuracy is hindered. There is no.

[0010]

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

[0013] Figure 1 shows a configuration of the blood pressure measuring device 12 with a pressure Hasamatai 10. In the figure, a pressure sensor 16 and an exhaust control valve 18 are connected to the bag portion 14 of the compression band 10, and an air pump 22 is connected via a switching valve 20. The pressure sensor 16 is connected to the bag 1
4 is detected, and a pressure signal SP representing the pressure is output. 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 bag portion 14. The switching valve 20 is an electromagnetic switching valve that can be switched between a compression side position and a suction side position in order to function as a bag portion contracting unit. In the compression side position, the switching portion 20 connects the bag portion 14 of the compression band 10 to the air pump 22. And the suction port of the air pump 22 is communicated with the atmosphere. At the suction side position, the bag portion 14 of the compression band 10 is communicated with the suction port of the air pump 22 and the discharge port of the air pump 22 is connected to the atmosphere. To communicate with Since a negative pressure is generated at the suction port of the air pump 22, the air pump 22 also functions as negative pressure generating means.

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 comprises 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 cycle preset by a setting unit (not shown).

FIG. 2 is a diagram showing an outer peripheral surface of the compression band 10 when it is developed in a plane, FIG. 3 is a diagram showing an inner peripheral surface of the compression band 10 when it is developed in a plane, and FIG. of
It is IV-IV sectional drawing. As shown in FIGS. 2 to 4, the compression band 10 of the present embodiment is similar to a band-shaped outer peripheral side sheet member 50 having flexibility such as a synthetic resin sheet such as a soft vinyl chloride sheet or a nylon sheet. The inner peripheral sheet member 52 having a shape is formed by bonding with a method such as an adhesive or high frequency welding in a region outside a broken line in FIGS. 2 and 3. As a result, an inflatable airtight bag portion 56 having a connection tube 54 is formed in substantially half of the compression band 10 in the longitudinal direction. The fastener 58 fixed to the outer peripheral side sheet member 50 with a sewing thread and the fastener 60 fixed to the inner peripheral side sheet member 52 with a sewing thread are mounted in a state where the compression band 10 is wound around the upper arm, for example, in a cylindrical shape. The hooks are detachably bonded to each other, and one side is provided with a large number of hooks made of synthetic resin, and the other side is provided with a large number of loop-shaped fibers hooked on the hooks.

As shown in detail in FIG. 5, the inner peripheral side sheet member 52 constituting the inner wall of the bag portion 56 has a fibrous cloth member 66 lined with a resin film 64 so as not to leak air. It is composed of The resin film 64 has a thickness of, for example, about 50 to 100 μm, and is made of a synthetic resin such as nylon, polyethylene, polypropylene, or polyolefin. The cloth-like member 66 is made of, for example, a nylon-based nonwoven fabric or a polyolefin-based nonwoven fabric having a basis weight of about 20 to 50 g.

As described above, the inner peripheral side sheet member 52 of the bag portion 14 of the compression band 10 of the present embodiment is lined with the resin film 64 for preventing air from leaking, and the fibrous material comes into contact with the skin of the living body. Since the compression band 10 is wound around the living body, even when the inner peripheral side sheet member 52 of the bag portion 14 comes into contact with the skin of the living body, the fibrous cloth member is formed of the cloth member 66. Air can flow through the open space between the 66 fibers, drying the skin and reducing its stuffiness.

Further, since a flexible bag having a hole for releasing air is not provided on the inner peripheral surface of the compression band 10 of this embodiment, uniform compression by the compression band 10 is ensured, and blood pressure measurement is performed. The accuracy is not hindered.

[0020] FIG. 6 is a sectional view showing the cuff 70 of the present invention. The compression band 70 of the present embodiment is provided with the inner peripheral side sheet member 7.
2, a water-absorbent resin sheet 74 and a porous sheet 76 for holding the water-absorbent resin sheet 74 are laminated on each other.
The inner peripheral side sheet member 72 and the porous sheet 76 are joined by a method such as adhesive or high frequency welding. The inner peripheral side sheet member 72 is made of, for example, a soft synthetic resin sheet such as vinyl chloride, nylon, polyethylene, polypropylene, and polyolefin so as not to leak air. The water-absorbent resin sheet 74 is formed, for example, by attaching a water-absorbent resin composed of a crosslinked product of a hydrophilic polymer such as an anionic cellulose derivative, starch-polyacrylamide, polyvinylpyrrolidone, maleic acid, and acrylic acid polymer to a nonwoven fabric. It absorbs moisture coming out of the skin. This water-absorbent resin can absorb water several hundred times its volume, and eventually gels. Further, the porous sheet 76 is formed of an extremely thin resin sheet having a large number of slits formed therein.
The water-absorbent resin sheet 74 is held in a state where the water-absorbent resin sheet 74 is sandwiched between the water-absorbent resin sheet 74 and the plurality of slits.

As described above, since the water-absorbent resin sheet 74 and the porous sheet 76 for holding the water-absorbent resin sheet 74 are laminated on the surface of the inner peripheral side sheet member 72 of the compression band 70, Moisture from the portion of the skin coming into contact with the inner peripheral sheet member 72 passes through the porous sheet 76 and is absorbed by the water-absorbent resin sheet 74, so that stuffiness is reduced.

Further, since a flexible bag having a hole for releasing air is not provided on the inner peripheral surface of the compression band 70 of this embodiment, as in the above-described embodiment, the compression band 70 Pressure is secured and the blood pressure measurement accuracy is not hindered.

FIG. 7 is a flow chart for explaining the operation of the arithmetic control circuit 37. In step SS1 in the figure, it is determined whether or not the activation signal MS or CS has been input. If the determination in step SS1 is affirmative, in step SS2, the exhaust control valve 18 is closed, the switching valve 20 is switched to the compression side position, and the air pump 22 is activated, so that the compression Starts to rise. In the following step SS3, the compression pressure P by the compression band 10 is set to a preset target pressure _PM.
It is determined whether or not the above has been achieved. This step SS3
If the determination in step S4 is negative, the above steps SS2 and subsequent steps are executed again.
The operation of the air pump 22 is stopped at
Step SS5 the slow exhaust is started by the exhaust control valve 18 in the compression pressure due to cuff 10 is in a predetermined speed, from the exhaust control valve 18 to be allowed to step down at the target speed of, for example, about 2 to 3 _mm Hg / sec The displacement is controlled.

Next, in step SS6, it is determined whether or not one pulse wave has been input. This step SS6
If the determination of step SS7 is negative, step SS4 and subsequent steps are repeatedly executed. If the determination is positive, step SS7 is performed.
Is executed. In this blood pressure value determination routine, for example, in the process of increasing the amplitude of the input pulse wave, the compression pressure when the pulse wave amplitude sharply increases is determined as the systolic blood pressure value, and the pulse wave amplitude is set to the maximum. The compression pressure when the pulse wave becomes low is determined as the average blood pressure value, and in the process of decreasing the amplitude of the pulse wave, the compression pressure when the pulse wave amplitude sharply decreases is determined as the minimum blood pressure value.
In a succeeding step SS8, it is determined whether or not the blood pressure measurement has been completed.
That is, it is determined whether the determination of the systolic blood pressure value, the average blood pressure value, and the diastolic blood pressure value has been completed.

When the determination in step SS8 is denied, the above-described steps SS4 and subsequent steps are repeatedly executed. When the determination is affirmed, rapid exhaust is performed by the exhaust control valve 18 for a predetermined period in step SS9. Thereafter, the blood pressure value measured in step SS10 is displayed on the display 38.
Is displayed in step SS11, the switching valve 20
Is switched to the suction side position and the air pump 22 is operated for a predetermined period, so that the air in the bag portion 14 is forcibly exhausted, and the inside of the bag portion 14 is set to a negative pressure. Subsequent step SS1
At 2, it is determined whether or not the stop signal MT has been input.
When the determination in step SS12 is denied, the above-described steps SS1 and subsequent steps are executed again. When the determination is affirmed, the operation of the air pump 22 is stopped in step SS13 and the exhaust control valve 18 is opened. Is done.

The blood pressure measuring device 12 of the present embodiment performs the non-measurement after the blood pressure measurement period due to the manual activation by operating the activation push button switch 40 or the periodic activation for continuous measurement by the output from the activation signal generator 44. Sash 1 during the period
When the step SS11 in which the pressure inside the bag portion 14 is negative is executed, the suction port of the air pump 22 and the bag portion 14 are communicated by the switching valve 20. Since the contact area between the compression band 10 wound around the living body and the skin is reduced as much as possible, the air flow is also promoted in this respect, and the stuffiness of the skin is suppressed.

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, in the compression band 10 of the above-described embodiment, the inner peripheral side sheet member 52 is provided on the entire inner peripheral side of the outer peripheral side sheet member 50. For example, only the position corresponding to the bag portion 14 is provided. It may be provided locally.

Although the entire inner peripheral side of the bag portion 14 is constituted by the inner peripheral side sheet member 52, a temporary effect can be obtained even if it is provided only on a part of the inner peripheral side.

Although the cloth-like member 66 of the above-described embodiment is made of a nonwoven fabric made of synthetic fiber, it may be made of a woven fabric made of synthetic fiber, or made of natural fiber such as cotton or wool. It may be a non-woven fabric or a woven fabric.

Further, the porous sheet 76 of the above-described embodiment is used.
May be laminated as necessary, and another porous sheet may be interposed between the inner sheet member 72 and the porous sheet 76 and the water-absorbent resin sheet 74 as necessary. May be done.

The inner peripheral side sheet member 7 of the embodiment shown in FIG.
4, the inner peripheral side sheet member 52 of the embodiment of FIG.

If the air pump 22 is a rotary positive displacement pump as described in, for example, JP-A-63-145636, step SS1
By driving the rotation direction in reverse at 1, the bag 1
4 may be set to a negative pressure. In such a case, there is an advantage that the switching valve 20 becomes unnecessary, and the above-described step SS11 corresponds to the bag portion contracting means.

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

[Brief description of the drawings]

1 is a block diagram illustrating the configuration of the blood pressure measuring apparatus having a pressure Hasamatai.

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 sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is an enlarged view showing a cross section of the inner peripheral side sheet member of FIG. 4;

6 is a view corresponding to FIG. 4 showing the cuff of the present invention.

FIG. 7 is a flowchart illustrating the operation of the arithmetic and control circuit in FIG. 1;

[Explanation of symbols]

 14: bag part 50: outer peripheral side sheet member 70: compression band 72: inner peripheral side sheet member 74: water absorbent resin sheet 76: porous sheet

Claims (1)

(57) [Scope of request for utility model registration] 1. A in comprising a peripheral side sheet member and the outer sheet inflatable bag portion made up of members in the take-compression zone is turned into a cylindrical shape in order to compress a portion of a living body during blood pressure measurement, A compression band for measuring blood pressure, wherein a water-absorbent resin sheet and a porous sheet holding the water-absorbent resin sheet are laminated on the surface of the inner peripheral side sheet member.