JPS6130571B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the structure of a cuff band for a blood pressure monitor.

Conventional blood pressure monitor cuff bands generally consist of an ischemic cuff (an air bladder for ischemia) and a sound-collecting cuff (an air bladder for detecting Korotkoff sound), but the sound-collecting cuff is made of a flexible rubber material. However, since it was made of a long thin rectangular rubber bag with a flat surface, it was flexible to some bending, but the way the cuff was wrapped could be deflected, or the cuff could be bent from the outside. When pressed, the sound collection cuff partially bends, blocking the air passage, making it difficult to accurately detect Korotkoff sounds. In addition, irregular wrinkles occur on the sound collecting surface of the sound collecting cuff,
There was a problem that it was difficult to accurately detect Korotkoff sounds because they were not in close contact with the upper arm of the human body.

The present invention has been made in view of the above-mentioned drawbacks, and it is an object of the present invention to improve upon these drawbacks.

An object of the present invention is to provide a cuff band for a blood pressure monitor that accurately detects Korotkoff sounds by bringing the sound collecting surface of the cuff band (an air bag for detecting Korotkoff sounds) into close contact with the upper arm of a human body.

An embodiment of the present invention will be described below with reference to the drawings. 1 to 6 are diagrams showing one embodiment of the present invention. In the figure, reference numeral 1 denotes a sound-collecting cuff (Korotkoff sound detection air bag) made of an elastic material such as rubber, and its sound-collecting surface 2 is integrated so as to form a part of the upper arm contact surface of the ischemic cuff 7. The sound collecting surface 2 is formed in a wavy shape to form a wavy film 4. Therefore, the thickness of the film on the sound collecting surface 2 is substantially uniform over the entire surface, but since it is wavy, it comes into close contact with the outer peripheral surface of the upper arm 8, causing irregular wrinkles. Never. 6
is a conduit connected to the middle part of the sound collection cuff 1, and is connected to the air inlet 11. Reference numeral 7 denotes a blood-isolating cuff, which is equipped to form a sound-collecting surface 2 of the sound-collecting cuff 1 on a part of its upper arm contact surface. It protrudes into space.

Further, a magic fastener 10 is provided on the outer circumferential surface of the ischemic cuff 7 and a wrapping band 9 protruding from one end of the ischemic cuff 7, to maintain the state in which the ischemic cuff 7 is wrapped around the upper arm. The wrapped state is shown in FIGS. 5 and 6.

Here, air is introduced into the inner space of the sound collecting cuff 1 and the ischemic cuff 7 by the air inlet device 11,
Inflate. Since the upper arm 8 of the human body is compressed by the ischemic cuff 7 and embedded inside, the blood vessel 8a is also compressed and becomes smaller in diameter.

Now, air is supplied to the ischemic cuff 7 and the upper arm 8 of the human body is
After pressurizing to a specified pressure, if you gradually exhaust the air,
Korotkoff sounds (cardiac pulse sounds) are picked up in the sound collection cuff 1 by blood flow passing through the compressed blood vessels 8a when the air pressure of the ischemic cuff 7 is reduced below a certain level, and are picked up by the microphone inside the cuff 1. can detect sound.

Since the membrane of the sound collecting surface 2 of the sound collecting cuff 1 is formed in a wave-like shape, it conforms well to the outer peripheral surface of the upper arm and abuts against it, thereby preventing irregular wrinkles from occurring.

In addition, as shown in FIG. 7, the sound collecting cuff 1 may have not only the sound collecting surface 2 but also the membrane back surface 3 itself formed in a wave shape. Although it is an elongated sound collection cuff,
It can be brought into close contact with the outer peripheral surface of the columnar human upper arm 8.

Here, it is preferable that the wave-like shape of the sound collection surface 2 is a shape in which semi-circular arcs are arranged in a row and are uniformly formed in the longitudinal direction.

As described above, the cuff band for a blood pressure monitor of the present invention is designed to be wrapped around the upper arm of a human body, and includes a sound collecting cuff with a built-in microphone, the sound collecting surface of which forms a part of the upper arm abutting surface of the ischemic cuff. In the cuff band for blood pressure measurement equipped with the sound collecting cuff, the film on the sound collecting surface of the sound collecting cuff is uniformly formed in a wave shape, so the thickness of the film is constant, and since the film has a wave shape, it can be applied to the upper arm of the human body. When wrapped around the body, it is easy to bring the sound collecting surface into close contact with the outer circumferential surface of the skin without causing irregular wrinkles, and when the sound collection surface is in close contact with the outer circumferential surface, the Korotkoff sound from the upper arm of the human body is transmitted through the bottom of the corrugated membrane and spreads over the entire sound collecting surface. Therefore, the Korotkoff sounds can be effectively picked up by the microphone housed in the inner space of the sound collection cuff, and the sensitivity of blood pressure measurement can be increased.

Furthermore, if a wave-shaped film is uniformly formed on the back surface of the film of the sound collecting cuff that faces the sound collecting surface as described in claim 2, the sound can be picked up from the upper arm abutting surface of the sound collecting cuff. The Korotkoff sounds resonating in the internal space of the ischemic cuff can also be collected from the back of the membrane of the sound collecting cuff, which has the effect of making the detection of Korotkoff sounds more effective.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of a cuff band for a blood pressure monitor according to the present invention, and FIG. 2 is a perspective view of a sound collecting cuff of the same embodiment.
FIG. 3 is a sectional view of the same embodiment as above, FIG. 4 is a perspective view of the used state, FIGS. 5 and 6 are sectional views of the used state, and FIGS. 7 and 8 are other embodiments of the present invention. FIG. 3 is a sectional view of the sound collection cuff of FIG. DESCRIPTION OF SYMBOLS 1... Sound collection cuff, 2... Sound collection surface, 3... Back membrane, 4... Wave-shaped membrane, 6... Conduit, 7... Blood ischemia cuff, 8... Human upper arm, 8a... Blood vessel, 9 ...Wrap band, 10...Magic fastener, 11...Air injector.

Claims (1)

[Scope of Claims] 1. A sound-collecting cuff having a built-in microphone is installed in an ischemic cuff to be wrapped around the upper arm of a human body, so that the sound-collecting surface forms part of the upper arm abutting surface of the ischemic cuff. A cuff band for blood pressure measurement characterized by forming a film on the sound collecting surface of the sound collecting cuff into a wave shape. 2. The blood pressure measuring device according to item 1, characterized in that the back surface of the membrane opposite to the sound-collecting surface that protrudes into the inner space of the ischemic cuff is formed into a waveform having the same shape as the waveform of the sound-collecting surface. cuff band.