JP4414485B1 - Sphygmomanometer with cuff device - Google Patents

Abstract

The present invention provides a cuff device with a short pressurization time and easy handling, and a small and lightweight sphygmomanometer including the cuff device.
SOLUTION: A cuff device for blood pressure measurement is provided, in which an air bag is accommodated in a cylindrical shape inside a chassis, and pressurized air is introduced into the air bag to block a measurement site, and an inner peripheral surface of the air bag is provided. A cylindrical cloth cover is provided so as to cover the upper surface of the casing including the cuff device, the cloth cover having elasticity, and attached to the entire casing or the inside of the casing. A display panel for displaying the measurement value is provided, and a switch for starting / stopping the measurement is arranged at a position behind the display surface of the display panel.
[Selection] Figure 9

Description

  The present invention relates to a sphygmomanometer including a blood pressure measurement cuff device that inserts a measurement site into a cylindrical insertion portion in which an air bag is housed to block the measurement site.

  Conventionally, as a cuff device for blood pressure measurement (hereinafter referred to as a measurement site insertion type cuff device) for blocking a measurement site by inserting a measurement site (upper arm, forearm) into a cylindrical insertion portion in which an air bag is housed. In order to fit a cuff (armband) with a built-in air bag to the measurement site during blood pressure measurement, the cuff 100 is structured by using a motor 200, a tape 300 or the like as shown in FIG. 12 (Japanese Patent Laid-Open No. 10-314123). The one using a pulling and winding method is well known.

  However, such a cuff winding method requires a lot of electric power, has a complicated structure and is complicated to assemble, and has a large shape and weight.

  On the other hand, a cuff with a built-in air bag having a sufficiently large diameter relative to the diameter of the measurement site (upper arm, forearm) is formed into a cylindrical shape, and pressurized air is introduced into the air bag to measure the cuff. A method of reducing the diameter of the cuff until it fits the site is considered.

  However, in the cuff device of the type that fits the cuff to the measurement site by introducing the pressurized air, which has been conventionally considered, the sphygmomanometer is smaller and lighter than the method of winding the cuff. There was a serious problem.

  First, in order to fit the cuff to the measurement site by introducing pressurized air, it is necessary to increase the capacity of the air bag by about 4 to 5 times compared to a normal cuff wound by hand. It took time to introduce pressurized air into the air bag. In this respect, it is conceivable to use 4 to 5 pressurizing pumps used in a normal blood pressure monitor, or to change to a pressurizing pump that is 4 to 5 times higher than the discharge capacity. The shape and weight of the sphygmomanometer increase because of the need for power consumption and the need to provide an AC power supply.

  Secondly, the cylindrical diameter of the air bag before pressurization is made large, and the diameter greatly changes during the pressurization process. Wrinkles are likely to occur on the inner circumferential surface of the air bag (the surface on the side in contact with the measurement site). In particular, if wrinkles occur at the position of the air bag corresponding to the vicinity of the artery in the measurement site, there is a possibility that it will affect the ischemic performance. was there. In addition, in a cuff device attached to a sphygmomanometer that measures blood pressure values by detecting blood flow sound (Korotkoff sound), it is necessary to provide a microphone for detecting Korotkoff sound in the cuff. In some situations, the microphone may not be in close contact with the measurement site, and Korotkoff sounds may not be detected properly.

  Thirdly, the air bag is attached to the inside of the cylindrical chassis (case) that forms the insertion portion of the measurement site, but the air blocking ability is small at the portion where both ends of the air bag where the blood blocking capacity is reduced contacts. It was. For this reason, when the measurement site is inserted so that the vicinity of the artery of the measurement site is located in this portion, correct ischemia cannot be performed.

  Fourth, when attaching the air bag to the cylindrical chassis, to fix the air bag with double-sided tape etc. while securing the position of the nozzle (communication pipe) for supply and exhaust of pressurized air and pressure detection, The assembly work was difficult.

  Fifth, the size of the cloth cover covering the inner peripheral surface of the air bag needs to cover the air bag in a sufficiently inflated state within the applicable range of the measurement site, so it corresponds to a small cylindrical diameter It was necessary to make it as large as possible, and before pressurized air was introduced into the air bag, it was wrinkled or sagging in appearance.

  Sixthly, the cloth cover has a structure in which the measurement site frequently comes into contact with the cloth cover, which is easily soiled and needs to be replaced, but the cloth cover cannot be easily attached to and detached from the sphygmomanometer body.

  The present invention has been made in view of the problems of the measurement part insertion type cuff device of the above-described conventional example, and in particular, the cuff device of the type for fitting the cuff to the measurement site by introducing pressurized air. An object of the present invention is to provide a small and lightweight sphygmomanometer that is easy to handle and assemble with a cuff device that is easy to handle and assemble with little pressurization time.

In the present invention, the above object has a cuff device for blood pressure measurement in which an air bag is accommodated in a cylindrical shape inside a chassis and pressurized air is introduced into the air bag to block the measurement site. A cylindrical cloth cover is provided so as to cover the inner peripheral surface of the air bag, the cloth cover has elasticity, and annular rings are attached to both ends of the cylindrical shape, A display panel for displaying the measurement value is provided on the upper surface of the casing including the cuff device, and a switch for starting / stopping the measurement is disposed at a position behind the display surface of the display panel. This is achieved with a sphygmomanometer.
Further, the above object may be achieved by the following inventions (1) to (18).
(1) In a cuff device for blood pressure measurement in which an air bag is accommodated in a cylindrical shape inside a chassis and pressurized air is introduced into the air bag to block the measurement site, the air bag inflates before the introduction of the pressurized air. A cuff device for blood pressure measurement, characterized in that a cushioning material is provided inside the air bag so as to be held in an undulating state.
(2) The cuff device according to claim 1, wherein the cushion material is formed with irregularities on a surface facing an inner peripheral surface of the air bag.
(3) The cuff device according to any one of (1) and (2), wherein the cushion material is divided into a plurality of pieces and fixed inside the air bag.
(4) The cuff device according to (3), wherein a microphone is attached to an inner peripheral surface of at least one position where the cushion material of the air bag is provided.
(5) One cushion material is fixed to the inside of the air bag at a substantially central position in the longitudinal direction in the developed shape of the air bag, and the cushion material is arranged in the longitudinal direction with respect to the fixed cushion material. The cuff device according to (2) above, wherein one microphone is fixed at each symmetrical position, and a microphone is attached to the inner circumferential surface of the opposing air bag of the cushion material fixed at the symmetrical position.
(6) The cuff device according to any one of (1) to (5) above, wherein an elastic strip-shaped plate member is attached to the outer peripheral surface of the air bag.
(7) The belt-like plate member is attached to the inside of the air bag so that the air bag is positioned in the vicinity of the insertion port of the measurement site of the chassis when the air bag is accommodated in a cylindrical shape inside the chassis. The cuff device according to (6) above.
(8) The above (1) to (7), wherein when the air bag is accommodated in a cylindrical shape inside the chassis, both ends in the longitudinal direction of the developed shape of the air bag overlap each other. The cuff device according to any one of the above.
(9) The cuff device according to (8) above, wherein an auxiliary cushion material is fixed inside at least one end of the both ends of the air bag in the overlapped state.
(10) The cuff device according to (9) above, wherein the thickness of the auxiliary cushion material changes in a direction perpendicular to the longitudinal direction of the air bag.
(11) A latch having a plurality of fixtures having a mushroom-shaped flange on the outer peripheral surface of the air bag, and the flange being locked to the chassis so that the air bag is accommodated in a cylindrical shape inside the chassis. A cuff device for measuring blood pressure, comprising a hole.
(12) The locking hole has a polished shape in which a large hole and a small hole are connected, and the mushroom-shaped flange is locked by being inserted from the large hole and transferred to the small hole. The cuff device according to (11) above.
(13) The cuff device according to the above (11) or (12), wherein at least one of the fixtures is provided with a communication hole for intake and exhaust of pressurized air in an air bag.
(14) The cuff device according to (11) or (12), wherein a communication hole for detecting the pressure of the pressurized air in the air bag is provided in at least one of the fixtures.
(15) A cushioning material is provided inside the air bag so that the air bag is held in an inflated state before the introduction of pressurized air, and a filter is provided in the communication hole so that a fragment of the cushioning material does not pass. The cuff device according to (13) or (14) above, wherein
(16) The above (1) to (15), wherein when the air bag is stored in a cylindrical shape inside the chassis, the inner peripheral surface of the air bag is covered with a cloth cover made of a stretchable fiber. ) The cuff device according to any one of the above.
(17) The cloth cover is formed in a cylindrical shape, and has an annular elastic ring at both ends, and the elastic ring is fitted into the recess of the blood pressure monitor main body so that the cloth cover is attached to the blood pressure monitor. A sphygmomanometer comprising the cuff device according to (16) above.
(18) A sphygmomanometer comprising the cuff device according to any one of (1) to (16) above.

As described above, according to the present invention, when the air bag is stored in a cylindrical shape inside the chassis, the inner peripheral surface of the air bag is covered with the cloth cover made of elastic fiber. The cloth cover extends sufficiently following the dimensions of the measurement site to be applied and the expansion of the air bag during pressurization, so there is no appearance of wrinkles or sagging on the cloth cover without introducing pressurized air. Can be.
The sphygmomanometer of the present invention including the cuff device having the above effects is easy to handle and assemble, and can be made small and lightweight.

It is the figure which looked at the air bag which this example developed about from the peripheral surface side. It is AA sectional drawing of the air bag of FIG. They are the figure (a) which looked at the air bag which developed this example from the inner peripheral surface side, and the BB sectional view (b) of (a). It is the external view (a) seen from the entrance direction of insertion of the measurement site | part of the chassis of a present Example, and the external view (b) seen from the exit direction of the measurement site | part inserted. It is the external view which looked at the chassis with which the air bag of the present Example was attached from upper direction (upward direction when attaching to a blood pressure meter). It is CC sectional drawing of the chassis with which the air bag of FIG. 5 was attached. It is DD sectional drawing of the chassis with which the air bag of FIG. 5 was attached. It is the front view (a) and side view (b) of the blood pressure monitor of a present Example. It is a longitudinal cross-sectional view (EE sectional drawing of Fig.8 (a)) of the blood pressure meter of a present Example. They are the external appearance perspective view (a) of the cloth cover of the cuff apparatus of a present Example, a front view (b), and a side view (c). It is a figure which is measuring blood pressure with the blood pressure meter of a present Example. It is a figure of the cuff apparatus of the type which winds up the typical cuff of a prior art example.

  Hereinafter, the cuff device of the present invention and a sphygmomanometer equipped with the cuff device will be described in detail based on preferred embodiments shown in the accompanying drawings.

  The cuff device of the present embodiment is for the upper arm as a measurement site, and basically includes an air bag and a chassis (case) to which the air bag is attached, and preferably a cloth cover for the air bag. The sphygmomanometer of this embodiment is a sphygmomanometer that measures a blood pressure value by detecting a blood flow sound (Korotkoff sound), and the cuff device is provided with a microphone for detecting Korotkoff sound. is there.

  FIG. 1 is a view as seen from the outer peripheral surface of the air bag in which the cuff device of the present embodiment is deployed (the surface on the side farther from the measurement site when it is cylindrical and stored in the chassis), and FIG. It is AA sectional drawing of an air bag. FIG. 3 (a) is a view seen from the inner peripheral surface of the developed air bag of this embodiment (the surface on the side that comes into contact with the measurement site when it is cylindrical and stored in the chassis). ) Is a cross-sectional view taken along the line BB in FIG. FIG. 3A shows a state where the microphone is attached.

  As shown in FIG. 1, the deployment shape of the air bag 10 is substantially rectangular, the approximate dimensions are 13-14 cm in width (length in the direction perpendicular to the longitudinal direction), and the length (length in the longitudinal direction) is 45. About 50 cm, both ends 101, 102 in the length direction (longitudinal direction) and one end 103 in the width direction (direction perpendicular to the longitudinal direction) are high-frequency welded (the welded portion is indicated by diagonal lines) to form a bag shape Is formed.

As shown in FIGS. 1 and 2, on the outer peripheral surface 110 of the air bag 10, four fixing tools 11 (11a, 11a, 11b, 11c, 11d) and high-frequency welding (the welded portion is indicated by hatching in FIG. 1). The four fixtures 11 are composed of a mushroom-shaped flange 111 and a constricted portion 112 under the mushroom-shaped flange 111 as representatively shown in the fixture 11a in FIG. As shown in FIG. 1, the fixture 11 is provided with a hole 113. As will be described later, the holes 113 of the fixtures 11 a, 11 b, and 11 c serve as communication holes that communicate with the inside of the air bag 10. Yes.
The position in the width direction (direction perpendicular to the longitudinal direction) of the outer peripheral surface 110 of the air bag 10 of the four fixing devices 11 is slightly shifted from the center in the width direction to the end 104 opposite to the end 103 where the high frequency welding is performed. It has become a position. Moreover, about the position of the length direction (longitudinal direction) of the outer peripheral surface 110 of the air bag 10 of the four fixing tools 11, between the fixing tools 11a-11b and between the fixing tools 11c-11d, the fixing tool 11b is equal. The interval between −11c is slightly narrower than this equal interval. The four fixtures 11 are not symmetrical with respect to the center in the length direction (longitudinal direction) of the outer peripheral surface, and are attached slightly closer to one end 101 as a whole. When the air bag 10 is attached to a cylindrical chassis, the portion between the fixing devices 11a-11b and 11c-11d of the air bag 10 is on the side surface of the chassis, and the portion between the fixing devices 11b-11c is the chassis. The portion up to the end (end in the length direction) 101 near the fixture 11a and the portion up to the end (end in the length direction) 102 near the fixture 11d are attached to the upper surface of the chassis.

  On the outer surface of the outer peripheral surface 110 of the air bag 10, a small sheet having a substantially rectangular shape is welded at a short end portion at a substantially central portion in the longitudinal direction by high-frequency welding (the weld portion is indicated by hatching), and a cable holding portion of the main lophone 12 is attached.

  As shown in FIG. 2, an elastic strip 13 such as polyethylene or polypropylene is attached to the inside of the outer peripheral surface 110 of the air bag 10 with a double-sided tape or the like along the longitudinal direction of the air bag 10. ing.

  Moreover, inside the air bag 10, for example, a sponge-like cushion material (cushion member) 14 such as urethane is attached at a position divided into three (14a, 14b, 14c). Also, a sponge-like auxiliary cushion material (auxiliary cushion member) 15 such as urethane is attached to a portion (end portion) near the end 102 in the length direction (longitudinal direction) of the air bag 10.

  In FIG. 1 and FIG. 3A, the belt-like plate material 13, the cushion material 14, and the auxiliary cushion material 15 that are built in the air bag 10 are shown together with the fixing tool 11 and the cable holder 12 by broken lines.

  The belt-like plate member 13 extends and is attached in parallel to the end 103 near the end 103 in the width direction (direction perpendicular to the longitudinal direction of the air bag) of the air bag 10 which is welded at high frequency. Further, the auxiliary cushion material 15 is attached to the end 104 on the side opposite to the end 103 in the width direction (direction perpendicular to the longitudinal direction of the air bag) where the air bag 10 is welded at high frequency.

  The three cushion members 14 (14a, 14b, 14c) are slightly positioned in the longitudinal direction of the air bag 10 as shown in FIG. 1, FIG. 2, FIG. 3 (a). 1 (14b) between the fixing device 11b and the fixing device 11a (positions close to the end 101), and on both sides thereof, about 40 mm away from the cushion material 14b in the longitudinal direction of the air bag 10, and symmetrical positions 1 each (14a, 14c) is attached. One auxiliary cushion material 15 is provided between the fixture 11d and the end 102 of the air bag 10 in the longitudinal direction.

  The cushion material 14 is fixed on the surface facing the outer peripheral surface 110 of the air bag 10, and is attached in a state where it partially overlaps the belt-like plate material 13. A portion in contact with the belt-like plate member 13 is directly attached to the belt-like member 13, and a portion in contact with the outer peripheral surface 110 is directly attached to the outer peripheral surface 110 with a double-sided tape or the like. The auxiliary cushion material 15 is fixed and attached directly to the outer peripheral surface 110 of the air bag 10 with a double-sided tape or the like.

  The belt-like plate member 13 has a width (length in a direction perpendicular to the longitudinal direction of the air bag) of 30 mm, a length (length in the longitudinal direction of the air bag) of 400 mm, and a thickness of about 1 to 2 mm.

  The cushion material 14 has a width (length in the longitudinal direction of the air bag) of about 40 mm and a length (in the direction perpendicular to the longitudinal direction of the air bag) of the cushion material 14b attached to the substantially center of the air bag 10. Length) is about 90 mm, the maximum thickness is about 25 mm, and the two cushion members 14a and 14c on both sides of the cushion member 14b have a width (length in the longitudinal direction of the air bag) of about 80 mm and a length (air The length in the direction perpendicular to the longitudinal direction of the bag) is about 90 mm, and the maximum thickness is about 25 mm.

  Further, the dimensions of the auxiliary cushion material 15 are about 40 mm in width (length in the longitudinal direction of the air bag) and about 60 mm in length (length in the direction perpendicular to the longitudinal direction of the air bag). As shown in the cross-sectional view of FIG. 3B, the minimum thickness is basically about from the position of the strip plate 16 toward the position of the fixture 11 in the direction perpendicular to the longitudinal direction of the air bag 10. It gradually increases (changes) from 10 mm to a maximum thickness of about 40 mm.

  The surface of the cushion material 14 on the inner peripheral surface 120 side of the air bag 10 (the surface facing the inner peripheral surface 120) is entirely processed into a concavo-convex shape (corrugated), and this concavo-convex has a thickness of about 10 mm, for example. Is the difference.

  Thus, since the cushion material 14 is attached to the inside of the air bag 10, even in the natural state before the introduction of the pressurized air, the air bag 10 is in a portion where the cushion material 14 is attached. It swells with a thickness of about 30 mm, and the amount of pressurized air introduced during blood pressure measurement can be reduced to reduce the pressurization time.

  In addition, since the thickness of the air bag 10 in the natural state is determined by the maximum thickness of the cushion material 14, the air bag before the introduction of pressurized air can be used as long as the cushion material without the uneven shape has a necessary thickness. It is possible to reduce the amount of pressurized air introduced at the time of blood pressure measurement and reduce the pressure time, but by providing the cushion material 14 with an uneven shape, the cushion material 14 can be Tens of the inner peripheral surface 120 can be crushed and the resistance when inserting the upper arm (measurement site) can be reduced.

  Unlike the cushion material 14, the auxiliary cushion material 15 is not processed to have a concavo-convex shape (corrugated shape) on the surface facing the inner peripheral surface 120 of the air bag 10, but the thickness is the width direction (longitudinal) of the air bag 10. Change (gradual increase) from the position of the strip plate 13 toward the position of the fixture 11 in a direction perpendicular to the direction). Like the cushion material 14, the auxiliary cushion material 15 reduces the amount of pressurized air introduced and reduces the pressurization time. At the same time, the auxiliary cushion material 15 is positioned on the upper surface of the chassis, as will be described later. It fits the upper front part of the upper arm (measurement site) inserted in the peripheral surface 120, prevents the upper arm from moving up and down with the upper arm inserted in the cuff device, and enables stable measurement. .

  Further, since the cushion material 14 and the auxiliary cushion material 15 are divided and fixed inside the air bag 10, a portion where wrinkles are generated can be specified as a portion where the cushion material is not fixed. Almost no wrinkles occur on the inner peripheral surface 120 of the portion where the cushion materials 14 and 15 are present.

  As shown in FIG. 3 (a), urethane sheet pockets 16 (16a, 16b) are attached to the surface of the inner peripheral surface 120 of the air bag 10 by high-frequency welding (the welded portion is indicated by diagonal lines). Inside, two microphones 17 (17a, 17b) for detecting a blood flow sound (Korotkoff sound) are connected and accommodated by a cable 18. The cable 18 connecting the two microphones 17a and 17b is passed through the cable holding part 12 attached to the outer surface of the outer peripheral surface 110 of the air bag 10 indicated by a broken line. The air bag 10 is held and the air bag 10 is easily attached to the chassis.

  The air bag 10 is formed in a cylindrical shape, and four fixtures 11 (11a, 11b, 11c, 11d) are attached to the inner surface of the chassis (case) 20 which is a cylindrical molded product made of ABS resin or the like. It is attached by locking in the four locking holes 19 (19a, 19b, 19c, 19d).

  4A and 4B are external views of the chassis 20. 4A is a perspective view from the side in the entrance direction where the arm (measurement site) is inserted, and FIG. 4B is a perspective view from the opposite side (side in the exit direction). . The fixing tools 11a, 11b, 11c, and 11d of the air bag 10 are locked in the locking holes 19a, 19b, 19c, and 19d, respectively.

  A noise sensor attachment portion 21 is provided on the upper portion of the chassis 20, and a noise sensor (not shown) is attached to the attachment portion 21. When the noise sensor attached to the chassis 20 detects noise from the sphygmomanometer main body (for example, noise generated by propagation of vibration sound of the measurement table to the sphygmomanometer main body) instead of blood flow sound. In addition, the detection signal can be canceled, and the blood flow sound (Korotkoff sound) from the measurement region of the upper arm can be detected accurately.

  In addition, two pump mounting portions 22 (22a, 22b) and electromagnetic valve mounting portions 23 (23a, 23b) are provided at the lower portion of the chassis 20. The pump and the solenoid valve attached to these attachment parts supply and exhaust the pressurized air to the air bag 10.

  In addition, various radial projections 24 formed on the outer surface of the cylinder of the chassis 20 are used for positioning when attaching the chassis 20 to the sphygmomanometer body together with reinforcement of the chassis 20. When the chassis 20 is attached to the sphygmomanometer body, it is between the two pump attachment parts 22 (22a, 22b) and the electromagnetic valve attachment part 23 (23a, 23b), that is, just below the cylinder of the chassis 20. In addition, a dry battery for supplying power necessary for driving a pump and a solenoid valve is housed.

  As shown in the locking hole 19c in FIG. 4A and the locking hole 19b in FIG. 4B, the locking hole 19 provided in the chassis 20 has a large hole 191 and a small hole 192 at the constricted portion 193. It has a connected shape. Further, the periphery of this polished-shaped locking hole 19 outside the chassis 20 is formed to be slightly thicker as shown by the locking holes 19a and 19d.

  The large hole 191 of the locking hole 19 is larger than the mushroom-shaped flange 111 of the fixture 11, and the small hole 192 is smaller than the mushroom-shaped flange 111. The constricted portion 193 where the large hole 191 and the small hole 192 are connected is formed narrower than the constricted portion 112 under the flange 111 of the fixture 11. The air bag 10 is attached to the chassis 20 by inserting the mushroom-shaped flange 111 of the fixing tool 11 through the large hole 191 and then sliding the mushroom-shaped flange 111 through the constricted portion 193 and moving to the small hole 192. This is done by locking 111. Since the fixture 11 is made of an elastic material, such as polyurene resin, the constricted portion 112 under the flange 111 can pass by being deformed when passing through the constricted portion 193 of the locking hole 19.

  FIG. 5 is an external view of the air bag 10 attached to the chassis 20 (viewed from above the chassis). 6 is a cross-sectional view taken along the line CC of FIG. 5, and FIG. 7 is a cross-sectional view taken along the line DD of FIG. 5, both showing the inside of the chassis 20. 5, 6 and 7 are also diagrams showing the basic structure of the cuff device of the present embodiment.

  In FIG. 5, the mushroom-shaped flange 111 of the fixture 11 (11 a, 11 d) provided on the outer peripheral surface 110 of the air bag 10 is moved from the large hole 191 of the locking hole 19 to the small hole 192, and the fixture 11 (11a, 11d) is shown attached to the locking hole 19 (19a, 19d).

   The fixture 11a has a through-hole (communication hole) 113 to the inside of the air bag 10 and also functions as a nozzle (communicating pipe for pressurized air). The pressure of the pressurized air is controlled through this communication hole. It can be detected. Also, the fixing tool 11b and the fixing tool 11c shown in FIG. 6 have a through-hole (communication hole) 113 inside the air bag 10 as in the fixing tool 11a, and the pump and the solenoid valve are passed through the communication hole 113. It can be connected to and can supply and exhaust pressurized air, and also functions as a nozzle (communicating pipe for pressurized air). The fixing tool 11d has the same shape as the fixing tools 11a, 11b, and 11c (the appearance of the hole 113 is present), but the hole 113 does not communicate with the inside of the air bag 10, and in this embodiment, the nozzle 11 The function of is not provided.

As for the fixtures 11a, 11b, and 11c, the mushroom-shaped flange 111 of the fixture 11 is moved to the small hole 192 of the locking hole 19, and the fixing device 11 is locked to the locking hole 19 so that the air bag 10 is the chassis. After being attached to 20, a connecting pipe to a tube or the like that conducts pressurized air (not shown) is inserted into the through hole (communication hole) 113 of the fixture 11. Pressure is applied to inflate 113 in the radial direction. As a result, the constricted portion 112 under the flange 111 of the fixing tool 11 is crimped around the small hole 192 of the locking hole 19, so that the fixing tools 11 a, 11 b, and 11 c are again connected to the constricted portion of the locking hole 19. There is no fear of returning to 193 and moving out to the large hole 191, and a firm locking to the locking hole 19 can be realized.
Like the fixtures 11a, 11b, and 11c, it is not necessary to provide a nozzle separately by providing the fixture 11 with the function of a nozzle (a communication tube for pressurized air). Further, there is no complication of attaching the air bag 10 to the chassis 20 while securing the position of the nozzle in the chassis 20 as in the case where the fixing tool is provided separately from the nozzle, and with a simple mounting structure, The air bag 10 can be firmly attached to the chassis 20.

  As described above, the cushion material 14 and the auxiliary cushion material 15 are attached to the inside of the air bag 10. However, as the cuff device 2 of the present embodiment is used, fragments of these cushion materials are generated. This broken piece may move to the connecting pipe that leads to the pump and the electromagnetic valve through the communication hole 113 of the fixtures 11b and 11c, and may cause a problem in the function of the pump and the electromagnetic valve. For this reason, in the communication holes 113 of the fixtures 11b and 11c of the present embodiment, a mesh (mesh) filter is provided in the constricted portion 112 so that fragments of the cushion material do not pass. In the present embodiment, the communication hole 113 of the fixture 11a is provided with a filter because the fragments of the cushion material do not pass as much as the communication hole 113 of the fixtures 11b and 11c that supply and exhaust pressurized air. However, the pressure measurement can be made more accurate by providing a filter to prevent the breakage of the cushion material from entering the tube (connecting pipe to the pressure sensor).

  The lower locking hole 19b and the locking hole 19c of the chassis 20 and the upper locking hole 19d and the locking hole 19a are arranged so that the small hole 192 is outside the large hole 191 (the side away from the DD cross section in FIG. 5). ), There is no possibility that the air bag 10 rotates and shifts inside the chassis 20 and comes off. In particular, the distance between the small hole 192 outside the locking hole 19b at the bottom of the chassis 20 and the small hole 192 outside the locking hole 19c is made equal to the distance between the fixtures 11b and 11c of the air bag 10. The attachment of the air bag 10 to the lower portion of the chassis 20 by the locking of the locking holes 19b and 19c and the fixtures 11b and 11c becomes stable.

  As shown in FIG. 6, the portions (end portions) near both ends 101, 102 in the longitudinal direction of the air bag 10 having a small ischemic ability overlap each other in the vicinity of the uppermost portion of the cylindrical chassis 20. Since it is attached, the ischemic performance at this part can be enhanced, and even when the measurement site is inserted in this part so that the vicinity of the artery of the measurement site is located, correct ischemia can be performed.

  In addition, since the cushion material 14 and the auxiliary cushion material 15 are divided and fixed inside the air bag 10, the portion where the wrinkles are generated is changed to the cushion material 14 and the auxiliary cushion on the inner peripheral surface 120 of the air bag 10. The material 15 can be identified as an unfixed portion (portion forming a valley in the drawing), and almost no wrinkle is generated on the inner peripheral surface 120 of the air bag 10 facing the cushion material 14. Therefore, as shown in FIG. 6, the cushion members 14a and 14c are usually fixed at positions inside the air bag 10 (positions on the side surfaces in the chassis 20) corresponding to the vicinity of the artery of the left and right upper arms (measurement sites). As a result, the ischemic performance of the upper arm (measurement site) near the artery can be sufficiently maintained. In addition, since the microphones 17a and 17b are attached to the inner peripheral surface 120 of the air bag 10 where the cushion materials 14a and 14c are opposed to each other without wrinkles, the microphones are measured in the measurement state after the introduction of pressurized air. 17 can be brought into close contact with the upper arm (measurement site), and the Korotkoff sound can be detected appropriately in either the left or right upper arm (measurement site).

  A pump mounting portion 22 (22a, 22b) is shown in a symmetrical position at the lower part of the chassis 20, and the pump attached here is a solenoid valve in the fixtures 11b, 11c having the function of a nozzle shown nearby. Connected together.

  In FIG. 7, the white arrow indicates the insertion direction of the arm. Except for the upper portion of the chassis 20, the belt-like plate member 13 is attached inside the outer peripheral surface 110 of the air bag 10 so as to be located near the insertion opening of the arm (measurement site). Therefore, the outer peripheral surface 110 of the air bag 10 can be pressed against the inner surface of the chassis 20 along the cylindrical shape of the inner surface of the chassis 20, and even when the arm is inserted and removed from the air bag 10 attached to the chassis 20, the air The bag 10 will not turn over and slip. In particular, by pressing near the arm insertion opening, the air bag 10 can be prevented from being turned over or displaced when the arm is inserted or removed.

  Further, the auxiliary cushion material 15 is fixed to the inside of the air bag 10 so as to gradually increase in thickness toward the exit of the arm, slightly near the exit of the arm (measurement site) inserted on the upper side of the chassis 20. ing. For this reason, when the upper arm (measurement site) is inserted into the cuff device, it fits in the front part (the part in the forearm direction) of the upper arm, which has a relatively small diameter, and hinders the vertical movement of the upper arm. In addition, this makes it possible to stably maintain the microphone that detects the blood flow sound (Korotkoff sound) facing the specific position of the upper arm (measurement site).

  FIG. 8 is an external view of a sphygmomanometer 1 including the cuff device 2 of the present embodiment, that is, the sphygmomanometer 1 of the embodiment. FIG. 8A is a front view, and FIG. 8B is a side view. In FIG. 8B, the left direction in the figure is the front of the sphygmomanometer 1. FIG. 9 is a cross-sectional view taken along line EE in FIG.

  As shown in FIG. 8B, the casing of the main body of the sphygmomanometer 1 is a casing 3 that forms a front (front direction) portion of the sphygmomanometer and a casing lid that forms a rear (opposite direction to the front) portion. 4 and a battery lid 5 in the lower part. The sphygmomanometer 1 has a circuit board, a pump, a solenoid valve, and the like, together with the cuff device 2, placed in the casing 3, and then a casing lid 4 is attached. By attaching the body 5, various parts are fixedly housed in the housing. On the front (front direction) portion of the battery lid 5, a protrusion (leg) 510 that tilts the sphygmomanometer 1 to an angle at which an arm can be easily inserted protrudes downward.

  Anti-slip members 511 made of urethane rubber are attached to both ends 513 of the leg 510 in the left-right direction, in contact with the sphygmomanometer 1 mounting base. Also in the casing lid body 4, an arc-shaped part (a part covering the almost full width in the left-right direction in FIG. 8A) at the bottom of the casing lid body 410 in contact with the sphygmomanometer mounting base 410 is a slip made of urethane rubber. A stop member 411 is attached.

  On the upper part of the sphygmomanometer 1, a display panel 25 to which a protective film is attached is provided, and a liquid crystal display unit 250 for displaying a measured blood pressure value and a pulse value is provided. In addition to the display panel 25, the blood pressure monitor 1 is not shown in FIGS. 8 (a) and 8 (b), but behind the display panel 25 on the drawing (in the direction opposite to the front), A measurement start switch and a measurement stop switch are provided.

  In the upper part of the sphygmomanometer 1 in FIG. 9, a liquid crystal display unit 250 forming a part of the display panel 25 to which a protective film is attached, an internal liquid crystal plate 26, and a plurality of pins 28 extending from the liquid crystal plate 26 to the substrate 27. It is shown. A stop or start switch 31 provided on the outer surface of the sphygmomanometer 1 interlocked with an internal switch 29 formed on the substrate 27 is shown. The pressure sensor 32 on the substrate 27 is connected to the through hole (communication hole) of the fixture 11 (11a) of the air bag 10 through the tube 33, and the pressure of the pressurized air is measured. It is like that.

  In the lower part of the sphygmomanometer 1, the four dry batteries 34 are placed in the lowermost part in two rows in the vicinity of the central part in the width direction of the sphygmomanometer (the left-right direction in FIG. 8A). A pump 35 for supplying pressurized air and a solenoid valve 36 for exhausting pressurized air, which are indicated by broken lines, are housed obliquely above and outward in the width direction of the sphygmomanometer. Both the pump 35 and the electromagnetic valve 36 are connected to the through hole of the fixture 11 b provided in the air bag 10 via a tube 37.

  The leg 510 has a bottom surface 512 that supports a dry cell in the front-rear width in the vicinity of the center portion (portion in the vicinity of the CC cross section) in the width direction (left-right direction in FIG. 8A) when viewed from the front of the sphygmomanometer. Therefore, it is smaller than the front-rear width at both end portions 513 in the width direction.

  As shown in FIG. 8A and FIG. 9, the cuff device of the present embodiment is provided with a cloth cover 30 that covers the inner peripheral surface 120 of the air bag 10.

  An annular elastic ring 38 such as a nylon tube is attached to both ends of the cloth cover 30 formed in a cylindrical shape, and is fitted into the concave portion 39 of the body of the sphygmomanometer 1 so as to be fixed. The cloth cover 30 is mounted so as to cover the ten inner peripheral surfaces 120.

  FIG. 10A is an external perspective view of the cloth cover 30 in a state where the cloth cover 30 is attached to the main body of the sphygmomanometer. The cloth cover 30 is formed by forming a piece of cloth into a cylindrical shape and sewing both ends of the cylindrical shape so as to wrap the annular elastic ring 38. In the mounted state, the cloth cover 30 is formed from the end portion 310 and the body portion 320. It has become a drum shape. FIG. 10B is a diagram (a diagram seen from the front of the end portion) of the end housing the annular elastic ring 38 as seen from the arrow A in FIG. The retracted state of the elastic ring 38 is shown. FIG. 10C is a view of the cloth cover 30 as viewed from a direction perpendicular to the arrow A in FIG. 10A from which the seam of the body portion can be seen on the front, and an annular elastic ring 38 is accommodated. A part of the end portion is shown through. In FIGS. 10A, 10B, and 10C, the broken line portions are seams, and the solid line portions 311 and 321 are end portions of the cloth.

  Since the cloth cover 30 is made of a stretchable fiber, for example, a nylon bi-directional stretch fiber containing about 20% polyurethane fiber, when the inner peripheral surface 120 of the air bag 10 is covered, the width direction (longitudinal direction) of the air bag 10 (Longitudinal direction) and lengthwise direction (longitudinal direction). Therefore, when the upper arm (measurement site) is inserted and pressed, it can be easily expanded and contracted according to the thickness of the upper arm (measurement site). That is, even if the diameter of the body portion of the cloth cover 30 is made not to sag in accordance with the dimension of the maximum diameter of the measurement site to be applied, the pressure is applied even when the measurement site of the minimum diameter to be applied is inserted. The cloth cover does not break because it extends sufficiently following the expansion of the air bag 10 at the time. In addition, even if the diameter of the body portion of the cloth cover 30 is made not to sag in accordance with the dimension of the minimum diameter of the measurement site to be applied, it can sufficiently follow even when the measurement site of the maximum diameter to be applied is inserted. The fabric cover will not break.

  FIG. 11 is a diagram in which blood pressure is measured by inserting the upper arm (measurement site) into the sphygmomanometer 1 of the present invention. The rear bottom surface (the bottom surface of the casing lid 4) 410 of the main body of the sphygmomanometer 1 is formed in an arc shape, and a non-slip member 411 made of urethane rubber is pasted over almost the entire width. Further, a non-slip member 511 made of the same urethane rubber is also attached to both end portions 513 on the front bottom surface (projection portion of the battery lid 5) 510. Thus, although the sphygmomanometer of the present invention is small and light, it is possible to measure blood pressure stably and easily without sliding on the sphygmomanometer 6.

  Incidentally, in a sphygmomanometer equipped with a measurement site (upper arm) insertion type cuff device, in order to properly block the upper arm, the longitudinal direction of the measurement site (upper arm) and the cylindrical insertion portion of the cuff device into which the measurement site is inserted Although it is desired that the axial directions be parallel, in the sphygmomanometer 1 of the present embodiment, the sphygmomanometer 1 according to the angle at which the measurement site (upper arm) is inserted into the cylindrical insertion portion (cylindrical chassis). Since the main body of the device rotates and tilts with the arc-shaped rear bottom surface 410 to which the non-slip member 411 is attached as a fulcrum, the longitudinal direction of the measurement site (upper arm) and the insertion of the measurement unit can be easily performed with a simple configuration. The axial center direction of the cylindrical insertion portion of the cuff device can be made parallel. For this reason, in the sphygmomanometer 1 of the present embodiment, the blood pressure can be accurately measured by correctly blocking blood in an easy posture without being unnaturally forced by the measurement subject.

  As described above, the cuff device for blood pressure measurement according to the present embodiment provides the cushioning material inside the air bag so that the air bag is inflated before the introduction of the pressurized air. Can be shortened. In particular, the surface of the cushion material facing the inner peripheral surface of the air bag (that is, facing the measurement site) is uneven, reducing the resistance when inserting the measurement site and smoothing the measurement site. Can be inserted.

  Furthermore, the cushion material is divided into a plurality of parts and fixed inside the air bag, so that when the air bag is stored in a cylindrical shape inside the chassis, the cushion material is divided between the parts where the wrinkles are generated. It is possible to specify the position of the air bag, and at the position where the cushion material is present, the inner circumferential surface of the air bag can be hardly wrinkled. For this reason, by providing a cushioning material at the position of the air bag corresponding to the vicinity of the artery at the measurement site, the influence on the measurement accuracy due to the deterioration of the blood ischemic performance due to wrinkles can be reduced.

  Further, in the cuff device used in the sphygmomanometer that measures the blood pressure value by detecting the Korotkoff sound, the microphone for detecting the Korotkoff sound is attached to the inner peripheral surface of the position where the cushion material of the air bag is provided, In the measurement state after the introduction of pressurized air, the microphone can be brought into close contact with the measurement site, Korotkoff sound can be detected appropriately, and highly accurate measurement can be realized.

  In addition, one cushion material is fixed to the inside of the air bag at a substantially central position in the longitudinal direction in the developed shape of the air bag, and is symmetrical with respect to the one cushion material in the longitudinal direction. Are attached to the inner circumferential surface of the opposing air bag of the cushioning material that is fixed at the symmetrical position. In the measurement state, the microphone can be brought into close contact with an appropriate corresponding position for detecting the Korotkoff sound at the measurement site, and high-precision measurement can be realized.

  Furthermore, by attaching an elastic band-shaped plate material to the outer peripheral surface of the air bag, it is possible to prevent the air bag from being turned over when the measurement site is inserted into and removed from the cuff device. In particular, when the air bag is placed inside the chassis, it is attached to the inside of the air bag so that the strip plate is located near the insertion port of the measurement site of the chassis, so that the measurement site can be inserted into and removed from the cuff device. When doing this, it is possible to sufficiently prevent the air bag from turning over.

  Furthermore, when the air bag is accommodated in the inside of the chassis in a cylindrical shape, both ends in the longitudinal direction of the deployed shape of the air bag overlap each other, so that the measurement site is blocked near this position. Even when the measurement person inserts the measurement site so that the power artery corresponds, the blood can be correctly blocked.

  Furthermore, the auxiliary cushioning material is fixed inside at least one end of the overlapping air bags, reducing the amount of pressurized air introduced and reducing the pressurization time. When the part is inserted into the cuff device, the upper part of the measurement part fits into the air bag, prevents the measurement part from moving in the vertical direction, and stable measurement can be performed. In particular, the auxiliary cushion material changes thickness in the direction perpendicular to the longitudinal direction of the air bag, so that it fits more to the measurement site and prevents it from moving up and down in the measurement site and performs stable measurement. be able to. For this reason, in the cuff device of a sphygmomanometer that detects a blood flow sound (Korotkoff sound), the state in which the microphone is stably opposed to a specific position of the measurement site can be maintained when Korotkoff sound is detected.

  The air bag further includes a plurality of fixtures having a mushroom-shaped flange on the outer peripheral surface of the air bag, and the flange is locked to the inside of the chassis so that the air bag is accommodated in a cylindrical shape inside the chassis. By attaching the locking holes, the air bag can be easily attached and fixed to the chassis. In particular, the locking hole has a polished shape with a large hole and a small hole connected, and the flange is locked by being inserted from the large hole and transferred to the small hole. Fixing can be done easily and reliably.

  In addition, the fixing tool is provided with a communication hole for intake and exhaust of pressurized air to the air bag and a communication hole for detecting the pressure of the pressurized air in the air bag, so that a nozzle (communication pipe) having these communication holes is provided. Need not be provided separately. Further, it is not necessary to attach the air bag to the chassis while securing the position of the nozzle as in the case where a nozzle (communication pipe) is provided separately, and the air bag can be easily and firmly attached to the chassis with a simple structure. .

  In addition, a filter is provided in the communication hole to prevent the debris of the cushion material from passing through, so that the debris of the cushion material moves to the connection pipe that leads to the pump, solenoid valve, and pressure sensor. Prevents troubles and troubles in pressure measurement, and makes it possible to perform appropriate supply and exhaust and accurate pressure measurement.

  Furthermore, when the air bag is stored in a cylindrical shape inside the chassis, the inner surface of the air bag is covered with a cloth cover made of stretchable fibers, so that the cloth cover can be used for the dimensions of the measurement site to be applied. Since the air bag expands sufficiently following the expansion of the air bag during pressurization, the cloth cover can be made free from wrinkles and sagging in appearance without introducing the pressurized air.

  Further, the cloth cover is formed in a cylindrical shape and has an annular elastic ring at both ends, and the elastic cover fits into the recess of the blood pressure monitor main body, so that the cloth cover can be detachably fixed to the blood pressure monitor.

  Although the cuff device of the present embodiment and the sphygmomanometer including the cuff device have been described based on the preferred embodiments shown in the accompanying drawings, the present invention is not limited to the embodiments. In particular, in this embodiment, the measurement site is the upper arm, but the measurement site is not limited to the upper arm, and the measurement site may be a forearm such as a wrist.

DESCRIPTION OF SYMBOLS 1 ... Blood pressure monitor 10 ... Air bag 11, 11a, 11b, 11c, 11d ... Fixing tool 111 ... Mushroom-shaped flange of fixing tool 112 ... Constriction part of fixing tool 113 ... Hole of fixing tool 13 ... Strip | belt-shaped board materials 14, 14a, 14b, 14c ... cushion material 15 ... auxiliary cushion material 17, 17a, 17b ... microphone 19, 19a, 19b, 19c, 19d ... locking hole 191 ... large hole 192 ... small hole 193 ... locking hole Constriction part of stop hole 2 ... Cuff device 20 ... Chassis 3 ... Casing 30 ... Cloth cover 4 ... Casing cover body 410 ... Bottom surface of casing cover body 5 ... Battery cover body 510 ... Projection part of battery cover body

Claims (1)

A cuff device for blood pressure measurement is provided in which the air bag is stored in a cylindrical shape inside the chassis, and pressurized air is introduced into the air bag to block the measurement site.
A cylindrical cloth cover is provided so as to cover the inner peripheral surface of the air bag,
The cloth cover has elasticity, and annular rings are attached to both ends of the cylindrical shape,
A display panel for displaying measured values is provided on the upper surface of the casing provided with the cuff device, and a switch for starting / stopping measurement is disposed at a position behind the display surface of the display panel. A blood pressure monitor characterized by

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