JPS63147434A - Arm band and pressure apparatus for hemomanometer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention Technical Field The present invention relates to improvements in a blood pressure cuff and a blood pressure cuff for compressing a part of a living body using the blood pressure cuff during blood pressure measurement. It is.

BACKGROUND ART In general, a blood pressure monitor arm is equipped with a band-shaped cuff body and an expansion bag provided on the body, and is wound around a part of a living body during blood pressure measurement, and compresses it by expanding the expansion bag. Obi is provided. Such a cuff is always wrapped around a part of a living body when the blood pressure of a living body, such as a post-surgery patient, needs to be constantly monitored.

Problems to be Solved by the Invention However, especially when the arm cuff is constantly wrapped as described above, pressure may remain due to the wrapping of the arm cuff even when not measuring blood pressure, or there may be problems caused by the wrapping of the cuff. This causes the inconvenience of making the arms and other parts stuffy and causing discomfort to the living body. When attaching a cuff to a part of a living body in advance for blood pressure measurement, or when attaching a cuff for continuous blood pressure measurement, the cuff should be wrapped around the living body as loosely as possible. is desired.

First Means for Solving the Problems The present invention has been made against the background of the above-mentioned circumstances, and its gist is to provide a band-shaped cuff main body and an expansion bag provided in the main body. A cuff for a sphygmomanometer, which is wound around a part of a living body during blood pressure measurement and compresses it by expanding an expansion bag, the cuff comprising: (a) provided at both ends of the cuff main body; , (b) a connecting means that connects both ends of the arm cuff to each other to form a cylindrical shape; and an actuator for reducing the diameter.

Operation and Effect of the First Invention In this way, when the actuator is operated, the arm cuff is reduced in diameter and brought into close contact with the living body in the same manner as in the conventional wrapping state, and the actuator is deactivated. This allows the arm cuff to expand in diameter and loosen it.

Therefore, the connecting means allows the cuff to be wrapped much more loosely than before, and the cuff can be automatically wrapped when the cuff is not in use, such as during the preparation period before blood pressure measurement or during the rest period between successive blood pressure measurement cycles. Since the wrapping can be further loosened than in the conventional state, even when blood pressure measurement is performed continuously for a long time, discomfort caused by pressure and stuffiness given to the living body can be suitably eliminated.

Second Means for Solving the Problem Another aspect of the present invention is to provide a cuff having a band-shaped cuff main body and an expansion bag provided in the main body, and a cuff for measuring blood pressure. This is a compression device for a blood pressure monitor that is wound around a part of a living body and compresses it by the expansion of an expansion bag. an actuator that is provided on the arm cuff body and reduces the diameter of the arm cuff wound into a cylindrical shape by shortening the length of the arm cuff main body; ) A pneumatic control device for a cuff that reduces the diameter of the cuff before inflating the inflatable bag, and deflates the cuff after the cuff is unreduced;
It is to include.

Operation and effect of the second invention In this way, before the inflation bag attached to the arm cuff main body is inflated, the actuator is actuated by the arm cuff pneumatic control device and the arm cuff is wound into a cylindrical shape. In addition to reducing the diameter of the cuff, after blood pressure measurement is completed, the inflation bag is deflated and the actuator is released, allowing the cuff to expand in diameter to a greater extent than before when not measuring blood pressure. It has become. That is, in the present invention, the diameter of the cuff is contracted and tightened by actuation of the actuator immediately before blood pressure measurement, and after blood pressure measurement is completed, the actuator is released and the cuff is expanded, and then the inflation bag is deflated. The arm cuff that was tightened for blood pressure measurement is suitably loosened. Therefore, according to the present invention, it is possible to suitably eliminate the feeling of pressure and stuffiness on the living body caused by constantly wearing the cuff.

EXAMPLE Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a diagram showing a cuff 1° for a blood pressure monitor that is wrapped around and compresses a part of a living body when measuring blood pressure. It is comprised of a rubber bag 14 attached within the main body 12 in the same longitudinal direction.

This rubber bag 14 functions as an expansion bag in this embodiment. The main body 12 has appropriate width and length dimensions to be wound around a part of a living body such as an upper arm, and has a rectangular plate-like member at one end, which is connected to the connecting means of this embodiment. A retaining ring 16 corresponding to the above is attached so that its longitudinal direction is perpendicular to the longitudinal direction of the main body 12, and by connecting both ends of the main body 12 with this retaining ring 16, the arm cuff 10 is As shown in FIG. 1, it is wound around a part of the living body in a cylindrical shape.

That is, after the other end of the main body 12 is passed through the retaining ring 16 from the inner circumferential side to the outer circumferential side, it is pulled to the extent that a sufficient margin can be maintained between it and the living body, and then it is folded back toward the main body 12. It will be done. This margin is significantly greater than that of conventional wristbands. One of a pair of fasteners 18 (shown in FIG. 2) is attached to the inner circumferential side of the other folded end, and the other is attached to the main body 12 at a portion corresponding to the other folded end. The fasteners 18 are adapted to be engaged with each other. Note that the retaining ring 16 is slightly curved along its longitudinal direction so as to correspond to the curved state of the part of the living body when the cuff 10 is wound around the part of the living body.

A longitudinal rubber bag-shaped actuator 20 is attached near one end of the main body 12 to which the latching ring 16 is attached. That is, the actuator 20 is housed in a loop-shaped space formed by the main body 12 being pulled out from the inner circumferential side toward the outer circumferential side through the lock song 22, which is a rectangular plate-shaped member. A flexible tube 26 connected to an electric pump 34, which will be described later, is connected to the actuator 20.

Note that a flexible tube 28 connected to an electric pump 34 is similarly connected to the rubber bag 14.

As shown in FIG. 3, the rubber bag 14 is equipped with a pressure sensor 30.
and a two-position switching valve 46, an electric pump 34 that supplies air through the on-off valve 32 into the rubber bag 14 and increases its pressure during blood pressure measurement, a quick exhaust valve 36 that quickly exhausts the air in the rubber bag 14, and A rate-limiting exhaust valve 40 having a throttle 38 and gradually discharging the air inside the rubber bag 14 is connected to each of them, and the electric pump 34 is also connected to the actuator 20 via a three-position switching valve 42 .

The blood pressure measurement circuit 44 is connected to the electric pump 34, the on-off valve 32, the rapid exhaust valve 36, the rate-limiting exhaust valve 4o, the 2-position switching valve 46, and the 3-position switching valve 42, respectively, and outputs a drive command signal to control these. It controls the

Further, a signal representing a biological pulse wave (pressure fluctuation wave synchronized with heartbeat) based on the pressure vibration of the rubber bag 14 is output from the pressure sensor 30 to this blood pressure measurement circuit 44, and based on the change in the magnitude of this signal, The blood pressure value of the living body is determined in the blood pressure measuring circuit 44. Note that a microphone may be provided to detect pulse sounds (Korotkoff sounds), and blood pressure may be measured based on the generation and disappearance of pulse sounds.

Next, the operation of this embodiment will be explained.

First, the cuff 10 is wrapped around a part of the living body with sufficient margin. Thereafter, by operating a startup push button (not shown), the blood pressure measurement circuit 44 is placed in a continuous measurement mode in which blood pressure measurement is automatically repeated at fixed time intervals.

When measuring blood pressure in this continuous measurement mode, first, as shown in the time chart of FIG.
A drive command signal is output from , the on-off valve 32 is closed, the 3-position switching valve 42 is set to the first position that communicates the electric pump 34 and the actuator 20, and the electric pump 34 is operated, so that the actuator 20
The target pressure P is inside. 1. Air is supplied until the temperature reaches, for example, about 300**Hg.

In this state, the two-position switching valve 46 is placed in its first position, so that the pressure sensor 30 and the actuator 2
0 is communicated with. FIG. 5 is a diagram showing this state, and when air is supplied and the actuator 20 expands, the main body 12 is pulled in the direction shown by the arrow in the figure, and the arm cuff 10 is ready to start blood pressure measurement. It can be tightened to a certain degree.

Subsequently, in response to a drive command signal from the blood pressure measurement circuit 44, the three-position switching valve 42 is set to the second position that cuts off between the electric pump 34 and the actuator 20, and the on-off valve 32 is set to the open state. Then, the electric pump 34 starts supplying air to the rubber bag 14. Also, rubber bag 1
4, the two-position switching valve 46 switches its second
By moving the pressure sensor 30 to this position, the pressure sensor 30 and the rubber bag 14 are brought into communication. The target pressure P in the rubber bag 14 is sufficiently higher than the systolic blood pressure value of a normal living body. , for example 1
When the temperature reaches about 801 mHg, a command signal is output to the rate-limiting exhaust valve 40 and the air inside the rubber bag 14 is gradually exhausted. By detecting the pressure in the rubber bag 14 during this discharge process with the pressure sensor 30, a signal representing a pulse wave is output to the blood pressure measurement circuit 44, and the blood pressure value is determined based on this signal.

When the blood pressure measurement is completed in this way, the blood pressure measurement circuit 4
In response to the command signal No. 4, the three-position switching valve 42 is moved to the third position that communicates the actuator 20 with the atmosphere, and the air in the actuator 20 is discharged.

Subsequently, the on-off valve 32 is closed, and the air inside the rubber bag 14 is exhausted by the quick exhaust valve 36.

That is, since the air in the actuator 20 is discharged before the air in the rubber bag 14 is discharged, the main body 1 that has been pulled out to the outer circumferential side through the lock ring 22
A portion of the cuff 2 is pulled back to the inner circumferential side, and after the blood pressure measurement is completed, the cuff 10 is in a state with sufficient space between it and the living body as before the blood pressure measurement. Therefore, in this embodiment, the 3-position switching valve 42 and the blood pressure measurement circuit 44 correspond to a cuff pneumatic control device, and the 3-position switching valve 42, the blood pressure measurement circuit 44, and the cuff 10 are connected to the sphygmomanometer pressure control device. The device is configured.

As described above, in this embodiment, the actuator 20 is inflated immediately before inflating the rubber bag 14 when measuring blood pressure, and the main body 12 is tightened to a sufficient degree for blood pressure measurement. When attaching the band 10 to a part of the living body, the arm band 10 can be wound loosely with sufficient margin. Furthermore, after the blood pressure measurement is completed, the air in the actuator 20 is discharged before the air in the rubber bag 14 is discharged, and the cuff 1o is loosened against the living body with sufficient margin as before the blood pressure measurement. It will be in a rolled state. Therefore, according to this embodiment, the arm cuff 10 is wrapped around the living body with sufficient margin before blood pressure measurement and during the rest period of blood pressure measurement between successive blood pressure measurement cycles. Discomfort caused by pressure, stuffiness, etc., on the living body can be eliminated.

Although one embodiment of the present invention has been described in detail above, the present invention can be suitably implemented in other embodiments as well. In the following description, parts common to those in the above-mentioned embodiments are designated by the same reference numerals, and the description thereof will be omitted.

For example, in the embodiment described above, actuator 2
0 was housed in the main body 12 pulled out from inside the lock ring 22 toward the outer circumference, but instead of this, as shown in FIG. 6, the retaining ring 16 of the main body 12 ( (not shown) Attach the lock ring 22 by sewing at one end near the main body 12, and then pass the main body 12 through the lock ring 22 from the inner circumferential side to the outer circumferential side.
It may also be housed in a space formed by sewing it onto the body work 2 on the side to which it is attached.

At this time, in this space, a bent plate material 48 that is made of cloth and is harder and more flexible than the main body 12 is interposed between the actuator 20 and the main body 12 in a state that opens toward the lock ring 22 side. is inserted, and the actuator 20
When air is supplied to and expands, the plate 48 is lifted toward the outer circumference, that is, upward in the figure, and the main body 12 is pulled out from the lock ring 22 as shown by the arrow in the figure, tightening the cuff 10. It is now possible to Moreover, in this case, instead of the actuator 20,
A bellows may be provided.

Moreover, instead of the actuator 20, two cylinders 50 (one not shown) as shown in FIG. 6 may be used. Pistons 52 are slidably fitted inside cylindrical cylinders 50 arranged in parallel along the longitudinal direction on the outer peripheral surface of the main body 12, and the side of the cylinder 50 from which the pistons 52 protrude The tube 26 is connected to the interior of the room so that air is supplied from an electric pump 34. Further, each flange portion 56 formed at one end of the rond protruding from the cylinder 50 of the piston 52 passes through a U-shaped fastening member 58.
One end of the main body 12 is fixed to the fastening member 58 with a pin, so that the one end of the main body 12 and the piston 52 move together. Here, when air is supplied to the chamber on the side of the piston 52 and the piston 52 is moved in the direction in which it is drawn into the cylinder 50, the main body 12 attached to the piston 52
is pulled as shown by the arrow in the figure, and the cuff 10 is tightened.

The above-mentioned embodiment is merely one embodiment of the present invention, and various modifications may be made to the present invention without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a state in which a wrist cuff for a blood pressure monitor according to an embodiment of the present invention is wrapped around a part of a living body. FIG. 2 is an enlarged sectional view of the vicinity of the actuator shown in FIG. 1, viewed from the side. FIG. 3 is a block diagram showing the configuration of essential parts of the blood pressure measuring device equipped with the arm cuff shown in FIG. 1. Figure 4 shows the operating status of the electric pump, rate-limiting exhaust valve, rapid exhaust valve, 3-position switching valve, on-off valve, actuator, rubber bag, and pressure sensor when measuring blood pressure in the blood pressure measuring device shown in Figure 3. FIG. Figure 5 is the third
It is a figure which shows the state where the actuator of a figure is expanded. FIGS. 6 and 7 are enlarged side views showing essential parts of other embodiments of the present invention, respectively. 10; Sphygmomanometer arm cuff attached to wrist) 12: Main body (arm cuff body) 14: Rubber bag (inflatable bag) 1
6: Latching ring (connection means) 20: Actuator 50 Niji cylinder (actuator) Fig. 3 Fig. 6 Fig. 7

Claims (2)

[Claims] (1) A sphygmomanometer arm comprising a band-shaped cuff body and an expansion bag provided on the body, which is wrapped around a part of a living body and compresses it by the expansion of the expansion bag during blood pressure measurement. A belt, comprising connecting means provided at both ends of the arm cuff main body and connecting the two ends to each other to form a cylindrical shape; and a connecting means provided on the arm cuff main body to shorten the length of the arm cuff main body. and an actuator that reduces the diameter of the arm cuff wound into a cylindrical shape. (2) A cuff having a band-shaped cuff body and an inflatable bag provided on the main body, which is wrapped around a part of a living body and compresses it by the expansion of the inflatable bag when blood pressure is measured. The compression device for a blood pressure monitor includes connecting means provided at both ends of the arm cuff body and connecting the two ends to each other to form a cylindrical shape; an actuator that reduces the diameter of the arm cuff wound into a cylindrical shape by shortening the diameter of the arm cuff; A compression device for a blood pressure monitor, comprising: a pneumatic control device for a cuff that deflates the expansion bag.