JP3620280B2 - Biological compression device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a living body compression apparatus that is used to compress a living body when measuring blood pressure, pulse wave, or the like from an arm or a finger.
[0002]
[Prior art]
For example, a biological compression device (cuff compression band) wound around an arm when measuring blood pressure from the arm has a structure as shown in FIG. 3 (perspective view) and FIG. 4 (cross-sectional view taken along line AA in FIG. 3). . The living body compression apparatus shown here includes an air bag 71 made of a non-stretchable material such as vinyl chloride, and a curler 72 having appropriate flexibility so that the air bag 71 does not bulge outward. It is provided. The air bag 71 is located on the inner cloth 70a side of the belt-like cloth 70, and the curler 72 is located on the outer cloth 70b side, and the compression device is wound around the arm by the hook-and-loop fastener 70c provided on the inner cloth 70a and the outer cloth 70b. Can be fixed in the state. Then, when air is supplied to the air bag 71, the air bag 71 is inflated, thereby compressing the living body part.
[0003]
[Problems to be solved by the invention]
However, in the conventional living body compression apparatus as shown in FIG. 3 and FIG. 4, when air is inflated into the non-stretchable air bag 71, the air bag 71 is inflated as shown in FIG. The width of the air bag 71 'in the transverse direction is narrower by the length d than the width before air injection. When the width of the air bladder 71 becomes narrower due to the air injection, there is a problem that the internal pressure of the air bladder 71 is dispersed due to the movement of the fat and muscle tissue of the living body, and the pressure is not transmitted 100% to the artery in the living body.
[0004]
Further, if the air bag 71 is made stretchable in order to prevent this problem, there is a problem that the air bag 71 swells in the transverse direction and the pressure is not effectively transmitted in the inward (biological side) direction. As shown in the diagram on the left side of FIG. 2, when the air bag 71 rich in elasticity is compared to the balloon 20, the balloon 20 swells greatly in the lateral direction when air is injected, and has a shape as indicated by reference numeral 20 ′. It is clear from becoming.
[0005]
The present invention has been made paying attention to such a conventional problem, and provides a living body compression apparatus that can reliably compress a living body part without being narrowed even when air is injected. Objective.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a living body compression apparatus according to claim 1 of the present invention is an air bag that expands and contracts when air enters and exits , and a non-stretchable material bonded to a side portion of the air bag. It is characterized by comprising restriction means for restricting the lateral expansion of the bag, and attachment means for attaching the air bag and the restriction means to the living body part.
[0007]
In this compression device, a stretchable air bag is used, and the bulging of the air bag to the side is restricted by the restricting means, so that the bulging to the inside (biological side) of the air bag due to air injection increases, Pressure is efficiently transmitted to the part. In addition, since the stretchable air bag is used, the width in the transverse direction of the air bag is not reduced with the air injection.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments.
FIG. 1 shows a schematic cross-sectional view of a living body compression apparatus according to the embodiment. This living body compressing device has an air bag 11 that expands and contracts when air enters and exits in a belt-like cloth 10 as a mounting means, and a restriction that restricts outward expansion (upper side in FIG. 1) and lateral expansion of the air bag 11. Means 13 and a flexible curler 12 provided along the outer periphery of the air bag 11 are provided. The belt-like cloth 10 includes an inner cloth 10a and an outer cloth 10b, and a hook-and-loop fastener (not shown) is provided on the inner cloth 10a and the outer cloth 10b, and the pressing device is fixed in a state where the compression device is wound around a living body part. be able to. However, the appearance of the compression device is the same as that of the conventional device as shown in FIG.
[0009]
The restricting means 13 is a non-stretchable material bonded to the outer surface of the air bag 11 and may be an O-ring, for example. A pattern (shape) in which such a regulating means 13 is provided on the outer surface of the air bag 11 is not specified. For example, if an O-ring is used, a circular pattern is formed. However, in addition to a quadrangle, a triangle, or the like, several linear patterns may be arranged in parallel, or a mesh pattern may be used. In short, the shape and the number of the restricting means 13 are not limited as long as the expansion of the air bag 11 to the outside or the side can be effectively suppressed.
[0010]
When such a living body compression device is wound around the living body portion with the belt-like cloth 10 and air is injected into the air bag 11, the air bag 11 is restrained from bulging outward or laterally by the regulating means 13. It will swell greatly inward. Therefore, the inflating of the air bag due to air injection is increased compared to the conventional cuff, the pressure is efficiently transmitted to the living body part, and the artery in the living body can be effectively compressed. In addition, since the stretchable air bag 11 is used, the width in the transverse direction of the air bag 11 does not narrow with the air injection, and the pressure is effectively transmitted to the living body.
[0011]
Here, the principle of combining the elastic air bag 11 and the restricting means 13 will be described with reference to the right side of FIG. As described above, when the air bag having elasticity is compared with the balloon 20, when air is injected into the balloon 20, the balloon 20 swells almost uniformly from the center in each direction as shown on the left side (see reference numeral 20 '). However, if the O-ring 21 is bonded to the side surface of the balloon 20 as a reversible restricting means without expanding and contracting, and the same volume of air is injected, the side bulge is suppressed as shown in the figure on the right side. The bulge degree to the distance increases by the length a (see reference numeral 20 ″).
[0012]
The living body compression apparatus of the present invention utilizes this principle. In the compression apparatus of the above embodiment, the non-stretchable regulating means 13 is adhered to the outer surface of the stretchable air bag 11 so that the air is compressed. The degree of bulging inward of the bag 11 increases. In addition, since the curler 12 is further provided outside the restricting means 13 in the above-described compression device, in combination with the action of the restricting means 13, the expansion of the air bag 11 to the outside is further effectively suppressed.
[0013]
【The invention's effect】
As described above, the living body compression device according to the present invention is a stretchable air bag and a non-stretchable material bonded to the side portion of the air bag, and restricts the lateral expansion of the air bag. Therefore, it has the following effects (1) to (3).
(1) Inflating of the air bag due to air injection increases, pressure is efficiently transmitted to the living body part, and the artery in the living body can be more effectively compressed.
(2) Since a stretchable air bag is used, the width in the transverse direction of the air bag does not become narrower with the air injection, and the living body part can be compressed with the width before the air injection. it can.
(3) The compression device having the above effects (1) and (2) can be realized with a simple configuration and at a low cost.
(4) By providing a flexible curler along the outer periphery of the air bag, the outward expansion of the air bag can be suppressed more efficiently.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a biological compression device according to an embodiment.
FIG. 2 is a view for explaining the principle of the living body compression apparatus of the present invention.
FIG. 3 is a perspective view of a living body compression apparatus according to a conventional example.
4 is a cross-sectional view taken along line AA in FIG. 3;
FIG. 5 is a diagram for explaining how an air bag inflates in a living body compression apparatus according to a conventional example.
[Explanation of symbols]
10 Banded cloth (mounting means)
11 air bag 12 curler 13 regulating means

Claims (4)

An air bag which expands and contracts by and out of the air, are those without this stretch bonded to the side of the air bag, and restricting means for restricting the expansion of the side of the air bag, the air bag and the restriction A living body compression apparatus comprising attachment means for attaching the means to a living body part. The regulating means, living body pressing apparatus according to claim 1, characterized in that it is formed so as to surround the side periphery of the bladder. The living body compression apparatus according to claim 1, further comprising a flexible curler provided along an outer periphery of the air bag. The living body compression apparatus according to claim 2, wherein a plurality of the regulating means are arranged in parallel on a side portion of the air bag.

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