JP3002597B2 - Mounting device for pulse wave detection probe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse wave detecting probe and, more particularly, to a technique for preventing a mounting position of a housing having a pulse wave sensor therein from a surface of a living body from shifting.

[0002]

2. Description of the Related Art A container having an opening in one direction is formed.
A housing mounted on the surface of the living body such that the opening faces the surface of the living body, and a pulse wave sensor having a pressing surface provided with a pressure detecting element and provided to be able to protrude into the housing, A pressure means provided in the housing, for pressing a pressing surface of the pulse wave sensor onto an artery on the surface of a living body, and a pulse wave signal output from a pressure detecting element of the pulse wave sensor pressing the artery. There is known a pulse wave detection probe for continuously detecting a pressure pulse wave generated from an artery based on a pulse wave. For example, those described in Japanese Utility Model Application Laid-Open No. 63-293424 and Japanese Utility Model Application Laid-Open No. 1-126205, which were previously filed by the present applicant, are described. Is mounted in a state where it is positioned in advance so as to be located at a suitable position on the artery on the surface of the living body.

[0003]

However, in such a conventional pulse wave detection probe, the housing is usually mounted on the surface of the living body only by using a band wound around the living body. When mounting on a surface, it is difficult to accurately position the housing so that the pulse wave sensor is positioned on the artery on the surface of the living body, and even if it can be positioned, the positioning position of the housing is fixed with a band When the housing is mounted, the mounting position of the housing may shift, and after the housing is mounted on the surface of the living body, the mounting position of the housing may shift due to external force, body movement, or the like applied to the housing. If the mounting position of the housing shifts in this way, the position of the pulse wave sensor with respect to the artery shifts accordingly, and there is a possibility that the pressure pulse wave cannot be detected properly.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to facilitate positioning of a housing of a pulse wave detection probe when the housing is mounted on the surface of a living body. An object of the present invention is to provide a mounting device that can more reliably prevent the position from being shifted.

[0005]

Means for Solving the Problems The gist of the present invention to achieve the above object is to form a container having an opening in one direction, and to form the container such that the opening faces the surface of the living body. A pulse wave sensor provided with a housing mounted on the surface and a pressure surface provided with a pressure detecting element, and provided so as to be able to protrude into the housing, and a pressure wave provided in the housing and pressed by the pulse wave sensor Pressing means for pressing a surface onto an artery on the surface of the living body, and a pressure pulse wave generated from the artery based on a pulse wave signal output from a pressure detection element of a pulse wave sensor pressing the artery. In a pulse wave detection probe for continuous detection, a mounting device for mounting the pulse wave detection probe to the living body, (a) a pressing surface of the pulse wave sensor comes into contact with the surface of the living body Allow An inner peripheral surface provided with an adhesive sheet having a notch for preventing the relative displacement from the surface of the living body, a wearing belt worn on the living body, and (b) pressing the pulse wave sensor. Housing fixing means for detachably fixing the housing to the outer peripheral surface of the wearing belt so that the surface comes into contact with the surface of the living body through the cutout of the wearing belt.

[0006]

According to the pulse wave detecting probe mounting apparatus having the above-described configuration, first, while checking a suitable position of the artery on the surface of the living body through the notch of the mounting belt, the mounting belt is attached to the surface of the living body via the adhesive sheet. Can be Next, with the housing positioned with respect to the notch so that the pressing surface of the pulse wave sensor comes into contact with the surface of the living body through the notch of the wearing belt, the housing can be attached to and detached from the outer peripheral surface of the wearing belt by the housing fixing means. Fixed to

[0007]

Therefore, prior to mounting the housing of the pulse wave detecting probe on the surface of the living body, the pressing position of the pulse wave sensor located in the housing can be determined based on the cutout of the mounting belt. Since the housing may be mounted on the surface of the living body using the notch as a mark, positioning of the mounting position of the housing can be easily performed.

Further, since the housing is fixed to the outer peripheral surface of the wearing belt attached to the surface of the living body by the housing fixing means, the housing is fixed to the living body surface in a relatively firmly fixed state via the wearing belt and the housing fixing means. It will be attached, thereby, compared with the conventional case where the housing is attached to the living body surface by tightening the wrist with a band or the like, the positioning position of the housing is shifted when the housing is attached to the living body surface, or the housing is displaced. It is possible to more reliably prevent the mounting position of the housing from being shifted due to external force, body movement, or the like after being mounted on the body surface.

Further, since the pressing surface of the pulse wave sensor is directly pressed onto the artery on the surface of the living body through the cutout of the wearing belt, the pressing state of the pulse wave sensor against the surface of the living body can be maintained as in the prior art. There is an advantage that an effect can be obtained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing an example of a mounting state of a pulse wave detecting probe by the mounting device of the present invention, and is a diagram showing an example of a configuration of a pulse wave detecting device. 1 and 3, the pulse wave detection probe 10 includes a pair of opposed side walls 1.
2, 14 and a bottom wall 16 connecting the side walls 12, 14 to each other, a substantially container-shaped first housing 18 which is curved in an arc as a whole, and mounted on the inner surface of the bottom wall 16 of the first housing 18. Inflatable rubber bladder 20
A pulse wave sensor 22 fixed to the air bag 20, and a second housing 24 rotatably connected to the first housing 18 on the lateral side thereof. It is attached to the wrist 26 so as to face the body surface 28 of the wrist 26 of the living body. When the pressure air from the air pump 30 is supplied into the air bag 20 via the pressure regulating valve 32 in this state, the pulse wave sensor 22 protrudes from the first housing 18 and presses onto the radial artery 34 on the body surface 28. Will be done. In the present embodiment, the first housing 1
8 constitutes a housing, and the air bag 20 constitutes pressing means.

The pressing surface 36 of the pulse wave sensor 22 has, for example, an actual application 1-filed and published by the present applicant.
As described in JP-A-122704, a plurality of pressure detecting elements (not shown) are arranged in one direction with a slight space therebetween. The pulse wave sensor 22 moves the body surface 28 so that the direction of arrangement of the pressure detecting elements crosses the radial artery 34.
, A pressure vibration wave, ie, a pressure pulse wave, generated from the radial artery 34 and transmitted to the body surface 28, and a pulse wave signal SM representing the pressure pulse wave is not shown in A / D (not shown).
It supplies to the control device 38 via a converter.

The control device 38 comprises a so-called microcomputer comprising a CPU, a ROM, a RAM and the like. The CPU outputs a drive signal SD to the pressure regulating valve 32 according to a program stored in the ROM in advance. The pressure in the air bladder 20 is adjusted based on the pulse wave signal SM sequentially obtained from each of the pressure detecting elements in the process of gradually increasing the pressure in the air bladder 20. Pressure, ie, the optimal pressing force of the pulse wave sensor 22, and the pressure detecting element that has detected the pressure pulse wave of the maximum amplitude is determined as the optimal pressure detecting element. Causes the display / recording device 40 to display the pressure pulse waves sequentially detected.

Here, in this embodiment, the pulse wave detection probe 10 is mounted on the wrist 26 as follows.

That is, as shown in FIGS. 1 and 2, a wearing belt 42 is attached to the body surface 28 of the wrist 26.
Is attached over approximately half a circumference of the. The mounting belt 42 includes a sponge rubber sheet 44, an outer fastener 46 fixed to one surface which is positioned on the outer peripheral side when the sponge rubber sheet 44 is mounted, and an inner peripheral side when the sponge rubber sheet 44 is mounted. A double-sided pressure-sensitive adhesive sheet 48 (shown only in FIG. 2), which is fixed to the other surface and is coated with a pressure-sensitive adhesive on both sides. In addition, the mounting belt 42 has a rectangular notch 50 in the middle in the longitudinal direction, the rectangular notch 50 penetrating in the thickness direction and allowing the pressing surface 36 of the pulse wave sensor 22 to pass therethrough. In a state where the artery 34 is positioned, the artery 34 is attached to the body surface 28 via the double-sided adhesive sheet 48. In FIG. 2, the double-sided pressure-sensitive adhesive sheet 48 is drawn thicker than it is for convenience. In this embodiment, the double-sided pressure-sensitive adhesive sheet 48 constitutes a pressure-sensitive adhesive sheet.

On the other hand, as shown in FIGS. 1 and 3, the first housing 18 of the pulse wave detecting probe 10 is provided with inner fasteners 52 and 54 which are detachably adhered to the outer fastener 46 of the mounting belt 42. A pair of fixed bands 56, 58
And inner fasteners 60 and 62 that are removably adhered to the outer fastener 46 of the mounting belt 42 are fixed to the end surfaces of the side walls 12 and 14 of the first housing 18. Accordingly, the inner peripheral fasteners 60 and 62 of the first housing 18 are positioned with the pressing surface 36 of the pulse wave sensor 22 positioned with respect to the notch 50 of the mounting belt 42.
Is attached to the outer peripheral fastener 46 of the mounting belt 42 attached to the body surface 28 and the fixing band 5 of the first housing 18 is
By attaching the inner fasteners 52 and 54 of the wear belt 42 to the outer fastener 46 of the wearing belt 42, the notch 50 Through body surface 28
When the first housing 18 is in contact with the
It is fixed to. In this embodiment, the outer fastener 46, the fixing bands 56, 58, and the inner fasteners 52, 54, 60, 62 constitute housing fixing means.

As described above, according to the present embodiment, prior to mounting the first housing 18 of the pulse wave detecting probe 10 on the body surface 28, the notch 50 of the mounting belt 42 is used to place the first housing 18 on the radial artery 34 on the body surface 28. By attaching the mounting belt 42 to the body surface 28 in a state where the notch 50 is positioned with respect to the radial artery 26 while confirming a suitable position, the pressing position of the pulse wave sensor 22 is determined based on the notch 50 of the mounting belt 42. Since the first housing 18 may be mounted on the body surface 28 using the notch 50 as a mark, the mounting position of the first housing 18 can be easily determined.

According to the present embodiment, the inner fasteners 60 and 62 provided on the first housing 18 itself are attached to the outer fastener 46 of the mounting belt 42 fixed to the body surface 28 via the double-sided adhesive sheet 48. And the first housing 18
Inner fasteners 52,5 provided on fixed bands 56,58 of
Since the first housing 18 is configured to be bonded, the first housing 18 is mounted on the body surface 28 in a relatively firmly fixed state. The first housing 18 is attached to the body surface 2 as compared with the conventional case where the
It is possible to more reliably prevent the positioning position of the first housing 18 from being shifted when the first housing 18 is mounted, and the mounting position of the first housing 18 from being shifted due to external force or body movement after the mounting.

Further, according to the present embodiment, the pulse wave sensor 22
Is pressed directly on the radial artery 34 of the body surface 28 through the notch 50 of the wearing belt 42, so that the pressing state of the pulse wave sensor 22 on the body surface 28 is maintained as in the related art. There is an advantage that an effect can be obtained.

Further, according to the present embodiment, the wearing belt 42
The pulse wave sensor 22 is connected to the radial artery 34 with the notch 50
Because it can be positioned at a suitable position above, for example, Japanese Utility Model Application Laid-Open Publication No.
No driving means such as a drive motor or a lead screw for driving the pulse wave sensor in a direction intersecting with the radial artery as described in Japanese Patent No. 26205 can be eliminated. There is an advantage that the probe can be configured smaller and cheaper.

Further, according to the present embodiment, since the pulse wave detection probe 10 is worn on the body surface 28 via the wearing belt 42, if the wearing belt 42 is disposable, the disease It can suitably contribute to the prevention of infection.

Although the embodiment of the present invention has been described with reference to the drawings, the present invention can be applied to other embodiments.

For example, in the above embodiment, the wearing belt 4
Reference numeral 2 denotes an outer peripheral fastener 46, a sponge rubber sheet 44, and a double-sided adhesive sheet 48 formed by applying an adhesive to both sides, but this is not always necessary. Fastener 4
6 and the double-sided pressure-sensitive adhesive sheet 48 alone may constitute a mounting belt, or an adhesive sheet such as a silicone rubber sheet may be provided instead of the double-sided pressure-sensitive adhesive sheet 48 or the double-sided pressure-sensitive adhesive sheet 48 and the sponge rubber sheet 44. . In the case of the latter using a silicone rubber sheet or the like, for example, the first housing 18 is attached to the wrist 26 in a wound state by a band similar to the conventional one, and the silicone rubber sheet is brought into close contact with the body surface 28 by the band. Becomes

In the above embodiment, the housing fixing means includes the outer fastener 46 of the mounting belt 42, the inner fasteners 60 and 62 of the first housing 18, and the first housing 1.
8, fixed bands 56 and 58, and the fixed bands 5
6, 58, which are not necessarily required.
The present invention can be applied to the case where neither the 58 nor the inner peripheral fasteners 52 and 54 are provided, or the housing fixing means can be constituted by using a double-sided adhesive sheet without using such fasteners. It is possible.

In the above embodiment, the pulse wave detecting probe 10 does not include a driving device for driving the pulse wave sensor 22 in a direction intersecting the radial artery 34, but the pulse wave detecting probe 10 includes the driving device. It does not matter.

Further, in the above embodiment, the pressure surface 36 of the pulse wave sensor 22 is provided with a plurality of pressure detecting elements. However, only one pressure detecting element may be provided.

In the above-described embodiment, the pulse wave detection probe 10 which is attached to the wrist 26 and detects the pressure pulse wave from the radial artery 34 has been described.
For example, it is needless to say that the mounting device of the present invention can be applied to a pulse wave detection probe that is mounted on the instep of the foot and detects a pressure pulse wave from the dorsal foot artery.

In addition, the present invention can be variously modified without departing from the spirit thereof.

Next, when detecting a pressure pulse wave using the pulse wave detection probe 10 as in the above-described embodiment, the pulse wave sensor 2
2 is applied to the body surface 28 via a soft rubber-like elastic sheet.
To press the sheet, the pulse wave detection probe 10
A technique for attaching to the device will be described. In the following embodiments, portions common to and substantially the same as those in the above-described embodiments are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 4, the inner peripheral fastener 6 of the above-described embodiment is provided on the distal end surfaces of the side walls 12, 14 of the first housing 18.
0 and 62 are not provided, and the first and second side walls 12 and 14 are not provided.
A rectangular frame-like holder 70 that is curved in an arc shape similar to the housing 18 is attached. The holder 70 is provided on the outer peripheral edge at a position facing each other in a direction perpendicular to the bending direction of the plate-shaped portion 72 and a pair of heights having relatively high heights. Side 74,7
6 and a high side portion 78 which is provided on the outer peripheral edge at a position opposed to the plate-shaped portion 72 in the bending direction and has the same height as the high side portions 74 and 76, and the high side portions 74 and 74.
A lower side portion 80 which is lower than the heights 76 and 78 and is located between the high side portions 74 and 76, and is integrally formed of, for example, resin, and protrudes from the inner surfaces of the high side portions 74 and 76. The pair of projections 82 are formed on the side walls 12, 14 of the first housing 18.
Are detachably attached to the first housing 18 in a state where they are respectively fitted into a pair of holes (not shown) provided on the outer surface of the first housing 18. In the holder 70, the plate-like portion 72 is provided.
Above, a relatively thin and soft rubber sheet 84 is attached in a state where the rubber sheet 84 is prevented from coming off by a cover member 86 made of, for example, resin. This rubber sheet 84
As the material, for example, a material made of silicone rubber is preferably used, and a material having substantially the same hardness as human skin is desirable. The side wall 1 of the first housing 18
Linear guide projections 88 (see FIG. 7) for use when attaching / detaching the holder 70 by a holder attaching / detaching device described later are provided on the outer surfaces of the side walls 12 and 14 in the longitudinal direction of the side walls 12 and 14, respectively. . The pulse wave detection probe 10 to which the rubber sheet 84 and the like are attached is attached to the wrist 26 in a wound state by bands 90 and 92, for example.

In the pulse wave detection probe 10 having the rubber sheet 84 and the like attached thereto, the pulse wave sensor 22 is pressed against the body surface 28 via the soft rubber sheet 84, so that the pressure pulse It is possible to reduce the pain caused by the pressure of the pulse wave sensor 22 in a thin person or the like without obstructing the detection of the wave, and to obtain the pulse wave sensor 22 into the body surface 28 even in a thin person. The displacement of the pulse wave sensor 22 can be suitably prevented. Further, since the rubber sheet 84 is detachably attached to the first housing 18 by the holder 70, if the holder 70 provided with the rubber sheet 84 is disposable, it contributes to prevention of disease infection at the time of detecting a pressure pulse wave. be able to. In this case, in order to prevent direct contact between the bands 90 and 92 and the body surface 28, the sheet-like member is
If the sheet-like member is disposable and inserted between the body surface and the body surface 28, and the disposable sheet-like member, it is possible to more suitably prevent the infection of the disease at the time of detecting the pressure pulse wave.

Next, a holder attaching / detaching device used to attach / detach the holder 70 provided with the rubber sheet 84 and the like to / from the first housing 18 of the pulse wave detecting probe 10 will be described with reference to FIGS.

In FIG. 7, reference numeral 94 denotes an apparatus main body.
A pair of guide grooves 98 extending in a straight line are provided in portions located above the inner surfaces of the pair of opposed side walls 96 of the apparatus main body 94, respectively.
The pair of guide projections 88 provided on the side walls 12 and 14 of the first housing 18 are respectively fitted into the two guide grooves 98, so that the pulse wave is maintained in a state where the first housing 18 is kept in a constant posture. The detection probe 10 is moved along the guide groove 98.

In the apparatus main body 94, a holder removing device 100 is provided in a portion located on the left side in FIG. 7 and below the guide groove 98. The holder removing device 100 includes the first housing 18.
Are provided integrally with each other so as to face each other with a space slightly larger than the dimension between the outer surfaces of the side walls 12 and 14;
A pair of locking claws 104 rotatably provided on a pair of side walls 96 of the apparatus main body 94 by pins 102;
4 is provided with a pair of torsion springs 106 which constantly urge in the counterclockwise direction in FIG. In FIG. 7, reference numeral 108 denotes the holder 70 removed.
The torsion spring 106 is provided between the upper end surface of the housing portion 108 and the hook 10.
7, and the movement of the torsion spring 106 in the counterclockwise direction in FIG. 7 beyond a certain limit is prevented based on the contact with the upper end of the housing portion 108.

When the holder 70 is detached from the first housing 18 by the holder removing device 100 configured as described above, first, an operator places the first housing 18 on the high side portion 78 side of the holder 70 attached thereto. 7 from the left side to the right side in FIG. 7 along the guide groove 98, in the process, the two hooking claws 104 are held on both sides of the side walls 12, 14 of the first housing 18.
Hooked on 0. The attachment position of the hooking claw 104, the rotation stop position by the storage unit 108, and the like are determined in advance as such. When the first housing 18 is further moved from this state, the locking claw 104 is rotated clockwise as shown by a one-dot chain line in FIG. The projections 82 of the first housing 18 are disengaged from the holes of the side walls 12 and 14 of the first housing 18, and when the engagement between the projections 82 and the holes is released, the hooks 104 are attached to the torsion spring 106 together with the holder 70. The holder 7 having the used rubber sheet 84 and the like removed from the first housing 18 by being returned according to the force
0 is discharged to the storage unit 108. FIG.
, The bands 90, 92 of the pulse wave detection probe 10
Are not shown.

In the apparatus main body 94, the first housing after the used holder 70 has been removed is located at the right side in FIG. 7 and below the guide groove 98. A holder supply device 110 for supplying a new holder 70 to 18 is provided. The holder supply device 110 is provided in a state where it is inclined leftward by a predetermined angle in FIG. 7, and a plurality of holders 70 provided with a rubber sheet 84 and the like are stacked on each other so that the plate-shaped portion 72 is located on the lower side. , A compression coil spring 116 for urging the holder 70 obliquely upward through a seat plate 114, and holders provided on both side walls 96 of the apparatus main body 94 and located at the uppermost position. A pair of rollers 118 (one side wall 96) for preventing the holder 70 from jumping out of the housing portion 112 due to the urging force of the compression coil spring 116 and being brought into contact with the roller 70.
(Only the side is shown). This allows
First housing 18 with holder 70 removed
7 is further moved rightward in FIG. 7 and reaches the position shown by the dashed line in FIG. 7, the distal ends of the side walls 12 and 14 of the first housing 18 are moved to the high side 78 of the uppermost holder 70.
When the first housing 18 is further moved in this state, the uppermost holder 70 together with the first housing 18 is moved rightward in FIG. At this time, guide rollers 120 for guiding the holder 70 supplied from the storage portion 110 to the first housing 18 from below are provided on both side walls 96 of the apparatus main body 94.
The first housing 18 and the holder 70 are urged in a direction in which the first housing 18 and the holder 70 approach each other between the roller 120 and the guide groove 98. Thereby, the projections 82 of the holder 70 are fitted into the holes of the side walls 12 and 14 of the first housing 18, whereby a new holder 70 is attached to the first housing 18.

According to such a holder attaching / detaching device, an operator fits the guide projection 88 of the first housing 18 into the guide groove 98 of the apparatus main body 94 and then moves the first housing 18 along the guide groove 98. By simply moving the holder 70, the used holder 70 can be easily removed and a new holder 70 can be easily and quickly mounted, and the operator can attach and detach the holder 70 without touching it. Can more preferably contribute to the prevention of infection.

The guide groove 98 and the guide projection 88 can be formed in an arc shape having the same radius of curvature as the arc of the side walls 12 and 14 of the first housing 18. The other pair of hooking claws are provided at a rotation position of 180 degrees, and these hooking claws are rotated only in one direction (clockwise direction in FIG. 7). Alternatively, the holder 70 may be sequentially removed. In the latter case, for example, the holder 70 that moves with the first housing 18
When one of the pair of hooking claws is rotated by a predetermined amount, and the engagement between the projection 82 and the hole is released, the other hooking hook can be engaged with the next holder by the action of a cam or the like. It is configured to be automatically rotated to the position.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a mounting state of a pulse wave detection probe by a mounting device of the present invention and an example of a configuration of a pulse wave detecting device.

FIG. 2 is a perspective view showing a mounting belt which is a part of the mounting device of FIG.

FIG. 3 is a perspective view showing the pulse wave detection probe of FIG. 1 in a reduced scale.

FIG. 4 is a cross-sectional view showing a state in which a rubber sheet interposed between a pressing surface of a pulse wave sensor and a living body surface is mounted on a housing of the pulse wave detection probe by a frame-shaped holder.

FIG. 5 is a plan view of the holder of FIG. 4;

6 is a sectional view taken along line VI-VI in FIG.

7 is a diagram showing a configuration of a holder attaching / detaching device used for attaching / detaching a holder provided with a rubber sheet or the like shown in FIG. 4 to / from a first housing of a pulse wave detection probe, and partially showing a cross section. FIG.

8 is a diagram showing a main part of a section taken along line VIII-VIII in FIG. 7;

[Explanation of symbols]

Reference Signs List 10 pulse wave detection probe 18 first housing (housing) 20 air bag (pressing means) 22 pulse wave sensor 28 body surface 34 radial artery 36 pressing surface 42 wearing belt # 46 outer fastener, 52, 54, 60, 62 inner fastener , 56,58 fixing band｝ housing fixing means 48 Double-sided adhesive sheet (adhesive sheet) 50 Notch

Claims (1)

(57) [Claims] 1. A container having an opening in one direction,
A housing mounted on the surface of the living body such that the opening faces the surface of the living body, and a pulse wave sensor having a pressing surface provided with a pressure detection element and provided so as to protrude into the housing. A pressure means provided in the housing, for pressing a pressing surface of the pulse wave sensor onto an artery on the surface of the living body, and output from a pressure detecting element of the pulse wave sensor pressing the artery. A pulse wave detection probe for continuously detecting a pressure pulse wave generated from the artery based on a pulse wave signal, a mounting device for mounting the pulse wave detection probe to the living body, wherein the pulse wave A pressure-sensitive adhesive sheet having a notch for allowing the pressing surface of the sensor to come into contact with the surface of the living body and preventing relative displacement with the surface of the living body is provided on the inner peripheral surface, and attached to the living body. A wearing belt, and the pulse wave sensor And a housing fixing means for detachably fixing the housing to the outer peripheral surface of the wearing belt such that the pressing surface of the wearing belt comes into contact with the surface of the living body through the notch of the wearing belt. A mounting device for the detection probe.