JPH0810299Y2 - Automatic band fastening device for pulse wave detector - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic band fastening device of a pulse wave detection device for detecting a pulse wave generated from an artery of a living body.

2. Description of the Related Art A housing that houses a pulse wave sensor for pressing a living body and a band that is annularly connected to the housing to be wound around a part of the living body are provided. There is known a pulse wave detection device of a type that is attached to a part. For example, JP-A-1-126205
That is what is described in the gazette.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, according to the above-described conventional pulse wave detecting device, the band whose one end is connected to the housing is wound around a part of the living body, for example, the wrist and then fixed to the housing or another band. Since it is configured, it is complicated to mount the housing while applying an appropriate tension to the band, and there is a drawback that skill is required.

The present invention has been made in view of the above circumstances, and the gist of the present invention is to provide an automatic band fastening device in which a housing can be easily attached without requiring skill.

Means for Solving the Problems The gist of the present invention for achieving such an object is to provide a housing for accommodating a pulse wave sensor for pressing against a living body and an annular shape around the housing for wrapping around a part of the living body. In a pulse wave detecting device of a type that is attached to a part of the living body by tightening the band, and (a) pulling the band into the housing or sending out from the housing. Band drive device that changes the circumference of the band,
(B) An operating member for controlling the operating direction of the band driving device is included.

In this way, the operating direction of the band driving device is controlled by the operation of the operating member and the circumferential length of the band is changed. Therefore, by operating the operating member, no skill is required and the operation is simple. The housing can be attached to.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, a pulse wave detection probe 10 attached to a wrist of a living body in order to detect a pressure pulse wave generated from a radial artery.
Is connected to the pulse wave detecting device main body 12 via a cord 14. In this pulse wave detection device main body 12, based on the pulse wave signal output from the pulse wave detection probe 10, while the pressure pulse waveform is continuously displayed, the biological body from the upper peak and the lower peak of the pressure pulse waveform. Systolic and diastolic blood pressure values are determined and displayed.

As shown in detail in FIG. 2 and FIG. 3, the pulse wave detection probe 10 includes a housing 16, a pressure detection element housed in the housing 16 and arranged on a pressing surface (not shown), and a radius by the pressing surface. Pulse wave sensor having pressing means for pressing an artery until a part of its wall is flat
18 and. Further, a band 20 for attaching it to the wrist is annularly connected to the housing 16. One end of this band 20 is attached to the housing 16 by a pin 22.
Fixed to one end of the band 20 and the other end of the band 20
Is being caught by.

The band drive device 24 includes a winding shaft 26 rotatably provided in the housing 16, and a winding shaft 26 provided at one end of the winding shaft 26 to allow the winding shaft 26 to rotate in the winding direction, but in the feeding direction. One-way clutch 28 to prevent the rotation of the
Electric motor that drives 26 through torque limiter 30
32 and. A rotation sensor 34 for detecting the rotation of the winding shaft 26 is provided near the torque limiter 30, and a rotation signal is sent from the rotation sensor 34 to the motor drive control circuit 36 as shown in FIG. It is being supplied. The housing 16 is provided with an operation member 38 that can be reciprocally operated between a release position and a tightening position, and a switch 40 that detects that the operation member 38 has been operated to the mounting position. The operation signal of 40 is also supplied to the motor drive control circuit 36.

The pulse wave detection probe 10 configured as described above is fitted to the wrist with the operation member 38 operated to the release position shown in FIG. 6 and the circumference of the band 20 is lengthened, and its pulse wave sensor. 18 is positioned so that it lies above the radial artery.
Next, when the operating member 38 is operated to the fastening position shown in FIG. 5, the electric motor 32 is driven in response to the signal from the switch 40, so that the band 20 is wound into the housing by the winding shaft 26. Be done. When the electric motor 32 is stopped by tightening the wrist and increasing the tension of the band, the motor drive control circuit 36 responds to the signal from the rotation sensor 34.
Since the motor drive current output from is stopped,
The housing 16 is attached to the wrist while being fastened to the band 20 by a constant tension.

When the pulse wave detection probe 10 is removed from the wrist, the operation member 38 is operated to the release position shown in FIG. 6 to allow the winding shaft 26 to rotate in the delivery direction. Therefore, the band 20 is easily pulled out from the housing 16 and the circumference of the band 20 is increased, so that the pulse wave detection probe 10 is easily removed from the wrist.

As described above, according to the present embodiment, the operating direction of the band driving device 24 is controlled by the operation of the operating member 38 to the fastening position, and the band 20 is wound up. With the tension of 20, the housing 16 can be easily attached.

 Next, another embodiment of the present invention will be described.

7 and 8, the pulse wave detection probe 50 includes a housing 52 and a pulse wave sensor 54 housed in the housing 52 and similar to the pulse wave sensor 18. Further, a band 56 for attaching it to the wrist is annularly connected to the housing 50. This band 56
It itself has an endless belt shape, part of which is housing 52
Housed within. Vacancy in the outer periphery of the housing 52
58 is formed, and a bag-shaped expansion member 60 functioning as a band driving device is provided inside the empty chamber 58 in a state of being located on the inner peripheral side of the band 56.

As shown in FIG. 9, after the air pressure-fed from the air pump 62 is regulated to a constant pressure by the pressure regulating valve 64, the control valve
It is adapted to be supplied to the expansion member 60 through 66.
The tension of the band 56, that is, the fastening force is set by the pressure regulating valve 64. The control valve 66 is operated by a signal from a latch switch 70 that is alternately turned on / off by operating an operation push button 68 provided on the housing 52. For example, when the latch switch 70 is turned on by the first pressing operation of the operation push button 68, compressed air is supplied into the expansion member 60 through the control valve 66, but when the second pressing operation of the operation push button 68 is performed, the compressed air is latched. When the switch 70 is turned off, the compressed air in the expansion member 60 is discharged to the atmosphere through the control valve 66.

In this embodiment, when the expansion member 60 is contracted by the compressed air in the expansion member 60 being discharged to the atmosphere by the pressing operation of the operation push button 68, the circumference of the band 56 is increased. Further, when compressed air is supplied into the expansion member 60 by the operation of pressing the operation push button 68 to expand the expansion member 60,
The circumference of the band 56 is reduced. Therefore, similarly to the above-described embodiment, the operation direction of the expansion member 60 is controlled by the operation of the operation push button 68 to wind the band 56, so that the housing 52 is tensioned by the constant band 56 without requiring any skill.
Can be easily installed.

As shown in FIGS. 10 and 11, the band 56 has a structure in which both ends of one band are annularly connected by a fastener 74 or an adhesive fastener 76 and the circumferential length can be adjusted. It's good.

The above description is merely one embodiment of the present invention, and the present invention can be modified in various ways without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 is a diagram showing a pulse wave detecting apparatus including an embodiment of the present invention. FIG. 2 is a perspective view showing the pulse wave detection probe of FIG. FIG. 3 is a perspective view of the housing shown in FIG. FIG. 4 is a block diagram showing the electrical construction of the embodiment shown in FIG. 5 and 6 are views for explaining the operation of the embodiment of FIG. 1, in which FIG. 5 shows a state in which the operating member is operated to the tightening position, and FIG. 6 shows the operating member to the release position. It shows the operated state. FIG. 7 is a view corresponding to FIG. 2 of another embodiment of the present invention. FIG. 8 is a sectional view of the embodiment shown in FIG. FIG. 9 is a pneumatic circuit diagram of the embodiment shown in FIG. 10 and 11 are views corresponding to FIG. 7 showing another embodiment of the present invention. 16,52: Housing 18,54: Pulse wave sensor 20,56: Band 24: Band drive device 30: Operation member 60: Expansion member (band drive device) 68: Operation push button (operation member)

Claims (1)

[Scope of utility model registration request] 1. A housing for accommodating a pulse wave sensor for pressing against a living body, and a band annularly connected to the housing for winding on a part of the living body. A pulse wave detection device mounted on a part of a living body, comprising: a band drive device for retracting the band into or out of the housing to change the circumferential length of the band; and an operating direction of the band drive device. An automatic band tightening device for a pulse wave detecting device, comprising: an operating member for controlling.