JPH035811B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a cuff band for a blood pressure monitor, and particularly to a cuff band for a blood pressure monitor that measures blood pressure by an oscillometric method.

[Background technology]

The Korotkoff sound detection method is commonly used to measure blood pressure, but with advances in electronic circuit technology, electronic blood pressure monitors that measure blood pressure using an oscillometric method have appeared.

A sphygmomanometer using the Korotkoff sound detection method uses a microphone to extract the sound of blood flow, and determines the systolic and diastolic blood pressure values based on the timing of its occurrence and the pressure value at the cuff band. All that was needed was sufficient strength. In contrast, in the oscillometric method, when the cuff band wrapped around the upper arm is tightened, the slight expansion (pulsation) of the upper arm caused by blood flow is treated as a ripple in the pressure value, and this ripple is used as the pulse wave component. Extract it as,
Since the system calculates the systolic blood pressure value and the diastolic blood pressure value based on the generation pattern, the cuff band is required to have excellent pressure transmittance to efficiently transmit pulsations.

By the way, as shown in FIG. 14, the cuff band 1 is usually made up of a blood-blocking bag 10 made of two blood-blocking cloths 11 and 12.
, a pair of outer cloths 16, 16 together with a clip plate 15
It is formed by wrapping it with
0 is formed by thermally welding the peripheral edges of two blood-blocking cloths 11 and 12, which are resin sheets made of vinyl chloride resin or the like, as shown in Japanese Patent Application Laid-open No. 106436/1983. There is.

Here, in order to satisfy the above-mentioned requirements for the cuff band in oscillometric blood pressure measurement, regardless of the material of the ischemic bag 10, the thickness of the ischemic cloth 11 on the inner side that is on the skin side when wrapped around the upper arm must be adjusted. The best countermeasure is to make it thinner, but when the thickness is made thinner, as shown in FIG. , when the pressure is applied as shown in FIG.
This has the problem that peeling and tearing occur, and the holding pressure strength is unstable.

Furthermore, if each blood ischemic cloth is composed of a plurality of resin sheets and the peripheral edges of these resin sheets are thermally welded, as shown in JP-A No. 61-100228, the welded portion Although the strength is increased and there is no problem with the pressure holding strength, the pressure transmittance, which is important in the cuff band of an oscillometric sphygmomanometer, is deteriorated because there are multiple pieces of blood ischemic cloth located on the skin side.

[Purpose of the invention]

The present invention has been made in view of these points, and its object is to provide a cuff band for a blood pressure monitor that has good pressure transmission properties and is also high in strength.

[Disclosure of the invention]

The present invention provides a cuff band for an oscillometric blood pressure monitor that derives blood pressure values from arterial pulse waves extracted from changes in cuff pressure, and is an ischemic bag formed by welding the peripheral edges of a pair of ischemic fabrics. In addition to being equipped with
One of the ischemic cloths in the ischemic bag is formed of a frame sheet having an opening, and a thin film-like sheet welded to the edge of the opening of the frame sheet and disposed in the opening. A blood ischemic cloth that is characterized in that the thin film-like sheet and the other blood ischemic cloth are welded at the peripheral edge, and that is to be made into a thin film shape by a frame sheet;
The thickness of the welded part with the other blood ischemic cloth is ensured.

The present invention will be described in detail below based on an illustrated embodiment. FIGS. 1 to 9 show one embodiment;
An ischemic bag 10 and a clip plate 15 that constitute the cuff band 1
And of the pair of outer cloths 16, 16 that wrap these,
The ischemic bag 10 is formed of a pair of ischemic cloths 11 and 12, and of both the ischemic cloths 11 and 12, the ischemic cloth 11 is on the skin side when the cuff band 1 is wrapped around the arm.
is formed of a thin film-like sheet 13 and a frame sheet 14 with an open center.

A pair of outer fabrics 1 made into a bag shape by welding the peripheral edges
6 and 16 are made of stretchable knit fabric in order to improve the slippage between them and the ischemic bag 10. In particular, the outer fabric 1 which becomes the skin side when wrapped around the arm is made of stretchable knit fabric.
6 is thinner than the other outer cloth 16. Furthermore, planar fasteners 19a and 19b that can be freely engaged with each other are attached to one end of the surface of one outer cloth 16 and the other end of the surface of the other outer cloth 16.

The ischemic bag 10 is shaped like a bag by welding the peripheral edges of a pair of ischemic cloths 11 and 12 made of synthetic resin sheets such as vinyl chloride resin. Blood stenosis cloth 11
is formed from a thin film-like sheet 13 that is thinner than the other hemostatic cloth 12, and a frame sheet 14 that is also thinner. First, the thin film sheet 13 and the opening edge of the frame sheet 14 are welded together to form the blood ischemic cloth 11, and then both blood ischemic cloths 1 are welded together.
The blood-isolating bag 10 is formed by welding the peripheral edges of the sheets 1 and 12, that is, the peripheral edges of the sheet 13 and the frame sheet 14, and the peripheral edge of the blood-isolating cloth 12.

Furthermore, in this embodiment, in order to prevent the ischemic bag 10 inside the bag formed by the outer cloths 16, 16 from moving around, when welding both the ischemic cloths 11, 12,
The welding of the pair of outer cloths 16, 16 is also
1 and 12 at the same time.

Therefore, in this cuff band 1, the ischemic bag 1
The blood ischemic cloth 11 which is on the skin side at 0 is formed of only a thin film-like sheet 13 for transmitting pulse waves, and has good pressure transmittance. sheet 14
The strength of the welded portion 17 of both ischemic cloths 11 and 12 is, even when the pressure is applied as shown in FIG.
It is designed to be able to withstand this. For example, if the thickness of the blood ischemic cloth 12 is 0.32 mm and the thickness of the thin film sheet 13 is 0.19 mm, if a frame sheet 14 with a thickness of 0.22 mm is used, the blood ischemic cloth 11 at the welded part 17 is The thickness is 0.41 mm, which is thicker than the hemostatic cloth 12, and sufficient strength can be obtained.

In addition, even when the pressure is applied to the welded part 29 between the thin film-like sheet 13 and the frame sheet 14 in the ischemic cloth 11, as shown in FIG. Although the members are welded together, the required strength is low, so peeling does not occur from this part. Furthermore, as shown in FIG. 5, the ischemic bag 10 is equipped with a conduction tube 20 that is connected to a pump. Further, the clip plate 15, which is housed in the outer cloths 16, 16 together with the ischemic bag 10, is shown as a flat plate in FIG. The belt 1 is formed in a shape that can be rolled up.

FIG. 7 shows a block diagram of an oscillometric blood pressure monitor, and FIG. 8 shows detected pressure and pulse wave components extracted therefrom. In the figure, 21 is a pump, 22 is an exhaust valve, 23 is a pressure sensor, 2
4 is an A/D converter, 25 is a sequence circuit,
26 is a display, and 27 is a power source.

FIGS. 10 and 11 show other embodiments. Here, a thick frame sheet 14 of the blood ischemic cloth 11 and a thin film-like sheet 13 welded to the front side or the back side of the opening edge is used, and the welding with the blood ischemic cloth 12 is performed using this frame sheet 14. It is carried out only by

FIGS. 12 and 13 show still another embodiment, in which a plurality of crosspieces 30 connecting each side of the opening edge of the frame sheet 14 are integrally formed on the frame sheet 14, and the crosspieces 30 prevents the thin film-like sheet 13 from stretching too tightly when it is in a pressurized state.

〔Effect of the invention〕

As described above, in the present invention, the ischemic cloth on the skin side of the ischemic bag is composed of a thin film-like sheet and a frame sheet, and the thin film-like sheet is used in areas where pressure transmittance is required, and A reinforcing frame sheet is provided at the required welded part, so it is possible to reliably capture pulse waves and perform accurate blood pressure measurements, and it also has sufficient strength. In particular, since the thin film-like sheet is welded to the opening edge of the frame sheet, and is also welded to the frame sheet and the other blood isolating cloth at the peripheral edge, the tensile force acting on the thin film-like sheet causes the peripheral welding. Even if an attempt is made to break the part, the above force is received by the welded part of the thin film sheet to the opening edge of the frame sheet, so the force applied to the peripheral welded part is reduced, and because of the double reinforcement, It has extremely high holding pressure strength.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, Fig. 2 is a sectional view of the same, Figs. 6 is a perspective view of the same as above, FIG. 7 is a block circuit diagram of the oscillometric blood pressure monitor, FIG. 8 is a detected pressure characteristic diagram showing the operation of the same as above, and FIG. 9 is a front view of the ischemic bag. 10 is a cross-sectional view of an ischemic bag according to another embodiment, and FIG. 11 is a cross-sectional view of an ischemic bag according to another example of the above.
FIG. 12 is a front view of an ischemic bag according to another embodiment, FIG. 13 is a front view of another example of the ischemic bag, FIG. 14 is a sectional view of the conventional example, and FIG. 15 is a partial sectional view of the same as above. , FIG. 16 is a partial cross-sectional view of the same when the same as above is in a pressurized state, in which 1 is a cuff band, 10 is an ischemic bag, 1
Reference numerals 1 and 12 indicate blood-blocking cloth, 13 a thin film-like sheet, 14 a frame sheet, and 30 a crosspiece.

Claims (1)

[Scope of Claims] 1. A cuff band for an oscillometric sphygmomanometer that derives a blood pressure value from an arterial pulse wave extracted from changes in cuff pressure, which is formed by welding the peripheral edges of a pair of ischemic cloths. a frame sheet including a bag and in which one of the blood ischemia cloths in the blood ischemia bag has an opening;
A blood pressure monitor formed of a thin film-like sheet welded to the opening edge of a frame sheet and disposed in the opening, and the frame sheet, the thin film-like sheet, and the other blood-blocking cloth are welded at the peripheral edge. cuff band. 2. The cuff band for a blood pressure monitor according to claim 1, wherein the frame sheet is connected between its opening edges by a piece integral with the frame sheet.