blood pressure measuring device

Abstract

To provide a blood measurement device which can prevent a reduction in measurement accuracy of a blood pressure.SOLUTION: A blood pressure measurement device 1 includes: a cuff structure 6 which is provided in a site facing a wrist side of a case and has a connection part 84, 93 connected to a connected part 38A of the case; a belt body 61 which has a bag body 63 in which a hole for arranging the connection part 84, 93 in a site facing the connected part 38A while the cuff structure 6 is arranged in the inside on one end side in a longitudinal direction and an attachment part 64 in which one end part that is one end side of the bag body 63 is fixed to a part closer to the other end side than the hole of the bag body 63, the other end part is attached to the connected part 35, and a length from one end part to the connected part 35 is shorter than a length from one end part to a connection part 84, 93 while the cuff structure is arranged in the bag body 63; and a fixing part 62 which is provided on the bag body 63 and fixes a site that is folded back at an axial part 36 of the bag body 63 and laminated.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a blood pressure measurement device that is worn on the wrist. [Background technology]

[0002] In recent years, blood pressure measuring devices have been used to measure blood pressure not only in medical facilities but also at home as a means of checking health conditions. Blood pressure measuring devices measure blood pressure by detecting vibrations of arterial walls, for example, by inflating and deflating a cuff wrapped around the upper arm or wrist of a living body and detecting the pressure of the cuff with a pressure sensor.

[0003] One known blood pressure measurement device is an integrated type in which the cuff and the device main body that supplies fluid to the cuff are integrated. Furthermore, integrated blood pressure measurement devices are also being considered as wearable devices worn on the wrist. One known technique for wearing a blood pressure measurement device on the wrist is to fasten a belt attached to the device main body to the wrist with the cuff positioned inside the belt.

[0004] Furthermore, in this type of blood pressure measuring device, a technique is known in which a curler is used between the belt and the cuff to fit the inflated cuff tightly to the wrist. In such a blood pressure measuring device, the cuff is fixed to the inner circumferential surface of the curler. The curler and cuff are then fixed to the device body via a back cover, and the cuff is connected to a flow path that is fluidly continuous with the pump (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2019-118418 Summary of the Invention [Problem to be solved by the invention]

[0006] In the blood pressure measurement device that is attached to the wrist using a belt, the cuff and the belt are separate, so when a user attaches the blood pressure measurement device to their wrist, the belt and the cuff may be attached to the wrist with relative misalignment in the axial direction of the wrist, which is along the longitudinal direction of the forearm. If the belt and the cuff are relatively misaligned in the axial direction of the wrist, the cuff will not be pressed appropriately against the wrist during blood pressure measurement, which may reduce the accuracy of blood pressure measurement.

[0007] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a blood pressure measurement device that can prevent a decrease in the accuracy of blood pressure measurement. [Means for solving the problem]

[0008] According to one aspect, a blood pressure measuring device worn on a user's wrist includes a case having a case body, an attachment portion provided at one of circumferentially symmetrical positions on the outer circumferential surface of the case body, a shaft portion provided at the other, and a connection portion provided on the wrist side of the case body; a pump housed within the case body and fluidly connected to the connection portion; a cuff having a connection portion provided at a position facing the wrist side of the case body and connected to the connection portion, and fluidly connected to the pump via the connection portion; and a cuff housed inside the case body. a belt-shaped bag body that can accommodate a wrist and is wrapped around the wrist, with a hole formed at one end in the longitudinal direction through which the connection part is arranged; an attachment part that has one end fixed to the one end side of the bag body and on the other end side of the hole and the other end attached to the attachment part, the length from the one end to the attachment part being shorter than the length from the one end to the connection part arranged in the hole; and a belt that is provided on the bag body and has a fixing part that fixes a part that is folded back and stacked on the axis part of the bag body.

[0009] The cuff is inflated by supplying a fluid thereto, and includes a bag-like structure such as an air bag.

[0010] According to this aspect, the cuff is disposed within the bag. Therefore, even if the cuff moves in the axial direction of the wrist within the bag when the blood pressure measurement device is worn on the wrist, the cuff can be appropriately pressed against the wrist because it is housed within the bag. As a result, the accuracy of blood pressure measurement can be improved.

[0011] In the blood pressure measurement device according to the above aspect, the connected portion and the connecting portion are configured so that one is inserted into the other.

[0012] According to this aspect, the connecting portion can be easily connected to the connected portion.

[0013] In the blood pressure measurement device according to the above aspect, the attachment portion may be flexible.

[0014] According to this aspect, the movable range of the belt around the shaft can be increased, making it easier to attach and detach the blood pressure measuring device to and from the wrist.

[0015] In the blood pressure measurement device according to the above aspect, the bag body and the attachment portion are made of cloth.

[0016] According to this aspect, the wearability of the blood pressure measurement device can be improved. [Effects of the Invention]

[0017] The present invention can provide a blood pressure measurement device that can prevent a decrease in blood pressure measurement accuracy. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view showing the configuration of a blood pressure measurement device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a partially cutaway side view of the blood pressure measuring device. [Figure 3] FIG. 2 is a side view showing the configuration of a cuff structure used in the blood pressure measuring device. [Figure 4]FIG. 2 is a perspective view showing the configuration of the cuff structure and the belt used in the blood pressure measurement device. [Figure 5] FIG. 2 is a side view showing the configuration of the belt and the cuff structure, with a portion cut away. [Figure 6] FIG. [Figure 7] FIG. 2 is a cross-sectional view showing the configuration of the belt and the cuff structure. [Figure 8] FIG. 2 is a cross-sectional view showing the configuration of the belt and the cuff structure. [Figure 9] FIG. 2 is an explanatory diagram showing the blood pressure measuring device attached to the wrist. [Figure 10] FIG. 10 is an explanatory diagram showing the configuration of a mounting portion according to a modified example of the present invention. [Figure 11] FIG. 10 is an explanatory diagram showing a cuff structure according to a modified example of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] An example of a blood pressure measurement device 1 according to one embodiment of the present invention will be illustrated below with reference to FIGS. 1 to 9. FIG. Fig. 1 is a perspective view showing the configuration of a blood pressure measurement device 1. Fig. 2 is a partially cutaway side view of the blood pressure measurement device 1. Specifically, Fig. 2 shows a state in which a belt 4 used in the blood pressure measurement device 1 has been cut.

[0020] Fig. 3 is a side view showing the configuration of the cuff structure 6 used in the blood pressure measurement device 1. Fig. 3 shows the cuff structure 6 wrapped around the wrist 200. Fig. 4 is a perspective view showing the configuration of the belt 4 accommodating the cuff structure 6. Fig. 5 is a side view showing a partial cutaway view of the configurations of the belt 4 and the cuff structure 6. Fig. 5 specifically shows the state in which the belt 4 is cut.

[0021] FIG. 6 is a plan view showing the configuration of the cuff structure 6. FIG. 7 is a cross-sectional view showing the configuration of the belt 4 and the cuff structure 6. Specifically, FIG. 7 shows the belt 4 and the cuff structure 6 cut along the width direction of the cuff structure 6 at a position that passes through the pressure cuff 71, the back plate 72, and the sensing cuff 73. FIG. 8 is a cross-sectional view showing the configuration of the belt 4 and the cuff structure 6. Specifically, FIG. 8 shows the belt 4 and the cuff structure 6 cut along the width direction at a position that passes through the pressure cuff 71 and the first connecting portion 84. FIG. 9 shows the blood pressure measurement device 1 attached to the wrist. 200 FIG.

[0022] The blood pressure measurement device 1 is an electronic blood pressure measurement device that is attached to a living body. In this embodiment, an electronic blood pressure measurement device in the form of a wearable device that is attached to a wrist 200 of a living body will be used for explanation.

[0023] As shown in FIGS. 1 and 2, the blood pressure measurement device 1 includes a device main body 3 and a wristwatch 200. Can The device includes a belt 4 and a cuff structure 6 housed in the belt 4.

[0024] The device main body 3 includes, for example, a case 11, a display unit 12, and an operation unit 13. The device main body 3 also includes, within the case 11, a pump 14 for inflating the cuff structure 6, a flow path that fluidly connects the pump 14 and the cuff structure 6, and a control board.

[0025] The case 11 includes an outer case 31 and a windshield 32 that covers an opening of the outer case 31 on the side opposite to the wrist 200 side.

[0026] The outer case 31 includes, for example, a cylindrically formed case body 33, two pairs of lugs 37, a bottom wall portion 34 provided at one end of the case body 33, an attachment portion 35, and an axis portion 36.

[0027] The case body 33 is formed, for example, in a cylindrical shape.

[0028] One pair of lugs 37 is provided at one circumferentially symmetrical position on the outer peripheral surface of the case body 33. The other pair of lugs 37 is provided at the other circumferentially symmetrical position on the outer peripheral surface of the case body 33. The pair of lugs 37 are lined up in the circumferential direction of the case body 33. One pair of lugs 37 is referred to as first lugs 37A, and the other pair of lugs 37 is referred to as second lugs 37B.

[0029] The attachment portion 35 is provided, for example, between the pair of first lugs 37A. An attachment portion 64 (described later) of the belt 4 is attached to the attachment portion 35. The attachment portion 35 is, for example, detachably attached to the pair of first lugs 37A. The attachment portion 35 is, for example, a spring bar.

[0030] The shaft 36 functions as a fulcrum around which a bag body 63 of the belt 4, which will be described later, is folded. The shaft 36 is configured, for example, so that the bag body 63 can be folded around one axis in the width direction of the bag body 63. The shaft 36 is configured, for example, parallel to a direction perpendicular to the wrapping direction of the bag body 63 around the wrist 200. The shaft 36 is configured, for example, in the shape of a rod provided between the pair of second lugs 37B. The shaft 36 is, for example, a spring bar that is detachably attached to the pair of second lugs 37B.

[0031] The bottom wall 34 is provided at the opening on the wrist 200 side of the case body 33 and covers the opening. Here, the wrist 200 side refers to the wrist 200 side in a state where the blood pressure measurement device 1 is worn on the wrist 200.

[0032] Bottom wall 34 is an example of the wrist 200 side of case 11. Bottom wall 34 is formed with connected portion 38. Connected portion 38 is fluidly continuous with pump 14. For example, a flow path continuous with pump 14 is formed within case 11, and connected portion 38 constitutes part of this flow path. Connected portion 38 is configured so that connecting portions 84 and 93 (described later) of cuff structure 6 can be connected thereto.

[0033] The number of connectable portions 38 is the same as the number of connecting portions 84, 93 of the cuff structure 6. In the present embodiment, the cuff structure 6 includes, for example, two connecting portions 84, 93, and therefore two connectable portions 38 are formed. One connectable portion 38 is designated as a first connectable portion 38A, and the other connectable portion 38 is designated as a second connectable portion 38B.

[0034] The first connected portion 38A is configured, for example, in a shape that allows the connecting portion 84 to be inserted therein. The first connected portion 38A is formed, for example, in the shape of a hole that opens on the outer surface 34a of the bottom wall portion 34.

[0035] The second connected portion 38B is, for example, a connecting portion 93 The second connected portion 38B is formed, for example, in the shape of a hole that opens on the outer surface 34a of the bottom wall portion 34.

[0036] The windshield 32 is, for example, a circular glass plate.

[0037] The display unit 12 is disposed opposite the windshield 32. As shown in Fig. 1, the display unit 12 is electrically connected to the control board. The display unit 12 is, for example, a liquid crystal display or an organic electroluminescence display. The display unit 12 displays various information including the date and time, blood pressure values ​​such as systolic blood pressure and diastolic blood pressure, and measurement results such as the heart rate.

[0038] The operation unit 13 is configured to allow a user to input commands. For example, as shown in Fig. 1, the operation unit 13 includes a plurality of buttons 41 provided on the case 11 and a sensor that detects the operation of the buttons 41. For example, three buttons 41 are provided.

[0039] The belt 4 includes a belt body 61 and a fixing portion 62. The belt body 61 includes a bag body 63 and an attachment portion 64 .

[0040] The bag body 63 is bag-shaped and accommodates the cuff structure 6 therein, and is configured in a band shape to be wrapped around the wrist 200. The bag body 63 is configured so that the cuff structure 6 can be pressed against the wrist 200 when wrapped around the wrist 200 and fixed by the fixing portion 62. The bag body 63 is also configured so that the cuff structure 6, which is inflated during blood pressure measurement, can be pressed against the wrist 200.

[0041] In this embodiment, the cuff structure 6 is configured to be inflated by air supplied from the pump 14, and the bag body 63 is configured in a bag shape that does not hinder the inflation of the cuff structure 6.

[0042] The bag body 63 has a length that allows it to be folded back at the shaft portion 36 when the blood pressure measurement device 1 is attached to the wrist 200, and the internal longitudinal dimension of the bag body 63 is set to the circumferential (longitudinal) length of the cuff structure 6.

[0043] In this embodiment, the cuff structure 6 includes, for example, a pressure cuff 71, a back plate 72, and a sensing cuff 73. For example, the longitudinal dimension of the pressure cuff 71 is Length Therefore, the longitudinal internal dimension of the bag body 63 is set to be equal to or greater than the longitudinal length of the pressure cuff 71.

[0044] The internal dimension in the short side direction of the bag body 63 is set to be equal to or greater than the length of the cuff structure 6 in the short side direction, and is, for example, approximately equal to the width of the cuff structure 6 in the short side direction. In this embodiment, for example, the dimension in the short side direction of the pressure cuff 71 is longer than the respective lengths in the short side direction of the back plate 72 and the sensing cuff 73. Therefore, the internal dimension in the short side direction of the bag body 63 is approximately equal to the length of the pressure cuff 71 in the short side direction.

[0045] The internal dimension of the bag body 63 in the thickness direction is set to a length that does not hinder the inflation of the cuff structure 6. For example, the internal dimension of the bag body 63 in the thickness direction is set to a length that provides an inflation margin for the cuff structure 6.

[0046] As shown in Fig. 4, holes 65 are formed at one end in the longitudinal direction of the bag body 63. The number of holes 65 formed is the same as the number of connecting portions 84, 93 provided in the cuff structure 6. In this embodiment, two connecting portions 84, 93 are provided, so two holes 65 are formed. One of the holes 65 is referred to as a first hole 65A, and the other hole is referred to as a second hole 65B.

[0047] The first hole 65A is formed at a position facing the first connecting portion 84 when the cuff structure 6 is housed in the bag body 63. The first connecting portion 84 is disposed in the first hole 65A when the cuff structure 6 is housed in the bag body 63. The second hole 65B is formed at a position facing the second connecting portion 93 when the cuff structure 6 is housed in the bag body 63. The second connecting portion 93 is disposed in the second hole 65B when the cuff structure 6 is housed in the bag body 63.

[0048] The bag body 63 configured in this manner is made of, for example, cloth.

[0049] The attachment portion 64 is formed in a strip shape, and one end thereof is on the bag body 63 side and is fixed to the other end side of the bag body 63 closer to the first hole 65A and the second hole 65B. The other end of the attachment portion 64 is attached to the attachment receiving portion 35.

[0050] The length from one end of the mounting portion 64 to the mounted portion 35 is smaller than both the length from one end of the mounting portion 64 to the first connecting portion 84 when the cuff structure 6 is contained within the bag body 63, and the length from one end of the mounting portion 64 to the second connecting portion 93.

[0051] The mounting portion 64 includes, for example, a mounting portion main body 66 formed in a strip shape, and a support portion 67 provided on the mounting portion main body 66 and supported by the mounted portion 35 by placing the mounted portion 35 inside.

[0052] One longitudinal end of the attachment portion main body 66 is fixed to the bag body 63 in a position where the width direction of the attachment portion main body 66 is parallel to the width direction of the bag body 63. For example, one end of the attachment portion main body 66 is fixed to the bag body 63 over a range from one end to the other end in the width direction.

[0053] Furthermore, the mounting portion main body 66 is configured to be rotatable around a single axis parallel to the width direction of the mounting portion main body 66. The mounting portion main body 66 is, for example, flexible, and can bend around a single axis parallel to the width direction of the mounting portion main body 66, thereby rotating around this single axis.

[0054] The attachment body 66 thus configured is made of, for example, fabric. One end of the attachment body 66 is fixed to the bag body 63 by, for example, sewing.

[0055] The support portion 67 is formed in a cylindrical shape that is open at both ends in the width direction of the attachment portion main body 66. The support portion 67 is configured so that a part of the attached portion 35 can be placed inside. The axial dimension of the support portion 67 is, for example, the same as or approximately the same as the length of the attached portion 35.

[0056] The support portion 67 is configured to be rotatable relative to the attached portion 35. For example, the support portion 67 has a size that allows it to rotate relative to the attached portion 35 disposed therein. The support portion 67 is made of, for example, cloth. The support portion 67 is fixed to the attaching portion main body 66 by, for example, sewing. The support portion 67 may be configured, for example, by folding back an end of the attaching portion main body 66 and fixing it.

[0057] The fixing portion 62 is configured to be able to fix the portion of the bag body 63 that is folded back and stacked at the shaft portion 36. As shown in Fig. 4, the fixing portion 62 is, for example, a hook and loop fastener.

[0058] The fixing portion 62 includes, for example, a hook portion 62a provided with a plurality of hooks and a loop portion 62b provided with a plurality of loops. The hook portion 62a is provided at the other end of the bag body 63. The loop portion 62b is provided in a region of the bag body 63 that faces the hook portion 62a when the bag body 63 is fastened to the wrist 200.

[0059] In the above example, the hook portion 62a and the loop portion 62b of the fixing portion 62 are respectively configured in different regions on the surface of the bag body 63, but this is not limiting. In another example, the fixing portion 62 may be configured such that a plurality of hooks and a plurality of loops are provided mixed in the same predetermined region.

[0060] The belt 4 configured in this manner is folded back at the shaft portion 36 at the other end of the bag body 63 and the layered portion is fixed by the fixing portion 62, so that the belt 4 forms a ring shape together with the device main body 3 as shown in FIG.

[0061] As shown in Fig. 2, the cuff structure 6 is housed in the belt 4. As shown in Figs. 2, 3, and 5 to 8, the cuff structure 6 includes, for example, a pressure cuff 71, a back plate 72, and a sensing cuff 73.

[0062] In the cuff structure 6, a back plate 72 is disposed on a pressure cuff 71, and a sensing cuff 73 is disposed on the back plate 72. In the cuff structure 6, adjacent components are fixed to each other by, for example, a bonding layer 75. The bonding layer 75 is formed of, for example, an adhesive or double-sided tape.

[0063] 6 and 7, the pressure cuff 71 includes, for example, a plurality of air bags 81 and a first connecting portion 84 that connects to the first connecting portion 38A of the device main body 3. The pressure cuff 71 is fluidly connected to the pump 14 by connecting the first connecting portion 84 to the first connecting portion 38A.

[0064] The plurality of air bags 81 is, for example, two air bags 81. Such a pressure cuff 71 is formed by welding a plurality of sheet members 86 together.

[0065] Here, air bag 81 is a bag-like structure, and in this embodiment, because blood pressure measurement device 1 is configured to use air via a pump, the description will be given using an air bag, but if a fluid other than air is used, the bag-like structure may be a fluid bag that expands with the fluid. Multiple air bags 81 are stacked and fluidly communicate in the stacking direction.

[0066] Air bag 81 is formed in a rectangular bag shape that is long in one direction. Air bag 81 is formed, for example, by combining two sheet members 86 and thermally welding them into a rectangular frame shape that is long in one direction, as shown in welded portion 81a in FIG.

[0067] First connecting portion 84 is configured, for example, in a shape that protrudes outward from air bag 81. Specifically, first connecting portion 84 is provided on air bag 81 that faces bottom wall portion 34 of case 11 via belt 4. The tip of first connecting portion 84 is exposed from the sheet member 86 on the device main body 3 side, of the two sheet members 86 that make up air bag 81.

[0068] The first connecting portion 84 is disposed in the first hole 65A of the bag body 63. The first connecting portion 84 is connected to the first connected portion 38A, for example, by being inserted into the first connected portion 38A. When the first connecting portion 84 is connected to the first connected portion 38A, the pressure cuff 71 is fluidly connected to the pump 14.

[0069] The first connecting part 84 and the first connected part 38A are fixed such that the connection between the first connecting part 84 and the first connected part 38A is maintained during blood pressure measurement, and the first connecting part 84 remains fixed even when the blood pressure measurement device 1 is detached from the wrist 200. and It is sufficient that the fixing has a holding force strong enough to maintain the connection of the first connected portion 38A.

[0070] 5 and 6, back plate 72 is formed in the shape of a plate that is long in one direction. Back plate 72 is attached to the outer surface of first sheet member 86a of pressure cuff 71 by bonding layer 75. Back plate 72 transmits the pressure force from pressure cuff 71 to the main surface of sensing cuff 73 on the back plate 72 side, while conforming to the shape of wrist 200.

[0071] The back plate 72 has shape-following properties. Here, shape-following properties refer to the ability of the back plate 72 to deform so as to follow the shape of the contacted portion of the wrist 200 on which it is placed, and the contacted portion of the wrist 200 refers to the area of ​​the wrist 200 that the back plate 72 faces. Here, contact includes both direct contact and indirect contact via the sensing cuff 73.

[0072] 6, back plate 72 has a plurality of grooves 72a on both main surfaces of back plate 72, extending in a direction perpendicular to the longitudinal direction of back plate 72. The plurality of grooves 72a provided on both main surfaces face each other, for example, in the thickness direction of back plate 72. Since the portion of back plate 72 having the plurality of grooves 72a is thinner than the portion not having grooves 72a, the portion having the plurality of grooves 72a is more easily deformed, and therefore deforms to follow the shape of wrist 200, and has shape-following ability extending in the circumferential direction of wrist 200.

[0073] The sensing cuff 73 is fixed to the main surface of the back plate 72 on the wrist 200 side by a bonding layer 75. The longitudinal length of the sensing cuff 73 is set to a length that contacts the area where at least one of the radial artery 211 and the ulnar artery 212, which are arteries 210 of the wrist 200, is present.

[0074] The sensing cuff 73 is formed, for example, in the longitudinal and width directions of the back plate 72, either in the same shape as the back plate 72 or in a shape smaller than the back plate 72. When the sensing cuff 73 expands, it compresses the area where the artery 210 is located on the palm side of the wrist 200. The inflated pressure cuff 71 presses the sensing cuff 73 towards the wrist 200 via the back plate 72.

[0075] Sensing cuff 73 includes second connecting portion 93, and is fluidly connected to pump 14 by connecting second connecting portion 93 to second connected portion 38B.

[0076] 5 to 7, the sensing cuff 73 includes, for example, one air bag 91, a flow path body 92 communicating with the air bag 91, and a second connection portion 93 provided at the tip of the flow path body 92. In the sensing cuff 73, one main surface of the air bag 91 is fixed to the back plate 72 by a bonding layer 75. For example, the sensing cuff 73 is bonded to the main surface of the back plate 72 on the wrist 200 side by the bonding layer 75. Such a sensing cuff 73 is formed by welding two sheet members 96 together.

[0077] Here, the air bag 91 is a bag-like structure, and in this embodiment, the blood pressure measurement device 1 is configured to use air via a pump, so the description will be given using an air bag. However, if a fluid other than air is used, the bag-like structure may be a fluid bag that expands with the fluid.

[0078] Air bag 91 is configured in a rectangular shape that is long in one direction. Air bag 91 is configured, for example, by combining two sheet members 96 that are long in one direction and thermally welding them together into a rectangular frame shape that is long in one direction, as shown in welded portion 91a in Figure 7.

[0079] The flow path body 92 is provided integrally with a portion of one edge in the longitudinal direction of the air bag 91. As a specific example, the flow path body 92 is provided at the end of the air bag 91 close to the device main body 3. The flow path body 92 is formed in a shape that is elongated in one direction with a width smaller than the width of the air bag 91 in the short direction, and has a circular tip. The flow path body 92 has a second connection part 93 at its tip. The flow path body 92 is connected to the flow path section via the second connection part 93, and forms a flow path between the flow path section of the device main body 3 and the air bag 91.

[0080] The flow path body 92 is formed by heat welding a portion of the sheet member 96 adjacent to the area of ​​the sheet member 96 that forms the air bag 91 in one direction, with the second connection portion 93 disposed between the two sheet members 96. Note that the air bag 91 fluidly communicates with the flow path body 92 by leaving a portion of the welding portion 91a that welds the two sheet members 96 together into a rectangular frame shape unwelded and configuring the welding portion 91a to be continuous with the welding portion 92a that forms the flow path body 92.

[0081] The second connection part 93 is configured, for example, in a shape that protrudes outward from the air bag 91. The second connection part 93 is provided at the tip of the flow path body 92. In addition, the tip of the second connection part 93 is exposed to the outside from the sheet member 96 that faces the back plate 72, of the two sheet members 96 that make up the flow path body 92.

[0082] The second connecting portion 93 is disposed in the second hole 65B of the bag body 63. The second connecting portion 93 is connected to the second connecting portion 38B, for example, by being inserted into the second connecting portion 38B. When the second connecting portion 93 is connected to the second connecting portion 38B, the sensing cuff 73 is fluidly connected to the pump 14.

[0083] The second connecting part 93 and the second connected part 38B are fixed such that the connection between the second connecting part 93 and the second connected part 38B is maintained during blood pressure measurement, and the second connecting part 93 remains fixed even when the blood pressure measurement device 1 is detached from the wrist 200. and It is sufficient that the fixing has a holding force strong enough to maintain the connection of the second connected portion 38B.

[0084] The cuff structure 6 configured in this manner is configured to arrange the second connection portion 93 of the sensing cuff 73 on the first connection portion 84 side of the pressure cuff 71 in the thickness direction of the cuff structure 6. As an example of this configuration, as shown in FIG. 6 , the pressure cuff 71 has an insertion portion 71a through which a portion of the sensing cuff 73 is arranged, for example, in the middle of the pressure cuff 71 in the longitudinal direction. The insertion portion 71a is configured, for example, in a shape in which a portion of an edge portion along the longitudinal direction of the pressure cuff 71 is recessed in the lateral direction of the pressure cuff 71. The insertion portion 71a is configured to allow the flow path body 92 of the sensing cuff 73 to pass from the inner circumferential surface side of the pressure cuff 71 to the device main body 3 side. Note that the shape of the insertion portion 71a is not limited to a shape in which a portion of an edge portion along the longitudinal direction of the pressure cuff 71 is recessed in the lateral direction of the pressure cuff 71. In another example, the insertion portion 71a may be a hole in which the second connecting portion 93 can be disposed. Alternatively, the flow path body 92 may be configured to extend beyond the edge of the pressing cuff 71 along the longitudinal direction toward the first connecting portion 84.

[0085] Next, an example in which the user wears the blood pressure measurement device 1 on the wrist 200 as shown in FIG. 9 will be described.

[0086] First, the user must 62b Hook part fixed to 62a The loop part 62b and then pull out the bag body 63 from between the shaft portion 36 and the outer case 31, thereby adjusting the size of the annular space formed by the bag body 63 and the device main body 3 to one that allows the wrist 200 to be inserted.

[0087] Next, the user inserts the wrist 200 into the annular space formed by the bag body 63 and the device main body 3.

[0088] Next, the user moves the blood pressure measurement device 1 relative to the wrist 200 so that the sensing cuff 73 faces the area of ​​the wrist 200 where the artery is located.

[0089] Next, the user may pull out the bag body 63 by, for example, using the hook portion 62a By pulling the end of the side, the bag body 63 is tightened and the sensing cuff 73 is pressed against the area of ​​the wrist 200 where the artery is present, and the hook portion 62a The loop part 62b By this procedure, the blood pressure measurement device 1 is attached to the wrist 200.

[0090] In the blood pressure measuring device 1 configured as described above, the cuff structure 6 is housed in the bag body 63 of the belt main body 61 of the belt 4. The bag body 63 does not hinder the inflation of the cuff structure 6. The bag body 63 presses the cuff structure 6 against the wrist 200 while being wrapped around the wrist 200 and fixed by the fixing part 62.

[0091] Therefore, even if the cuff structure 6 moves in the axial direction of the wrist 200 relative to the bag body 63 when the blood pressure measurement device 1 is attached to the wrist 200, the cuff structure 6 is housed in the bag body 63, and therefore the cuff structure 6 can be suitably pressed against the wrist 200. As a result, the accuracy of blood pressure measurement can be improved.

[0092] Furthermore, the cuff structure 6 is fluidly connected to the pump 14 through the connection of the connecting portions 84, 93 and the receptacles 38A, 38B, and is mechanically attached to the device main body 3 by attaching the attachment portion 64 of the belt 4 to the receptacle 35 of the device main body 3. Therefore, the connection portions 84, 93 and the receptacles 38A, 38B only need to be fixed with a holding force sufficient to maintain the fluid connection between the cuff structure 6 and the pump 14, eliminating the need for a configuration for directly attaching the cuff structure 6 to the device main body 3. This allows for a simplified configuration of the blood pressure measurement device 1. For example, the connection portions 84, 93 and the receptacles 38A, 38B can be simply configured to connect the connection portions 84, 93 to the receptacles 38A, 38B simply by inserting the connection portions 84, 93 into the receptacles 38A, 38B.

[0093] Furthermore, the length from one end of the attaching portion 64 fixed to the bag body 63 to the attached portion 35 is shorter than the length from one end of the attaching portion 64 fixed to the bag body 63 to both of the connecting portions 84, 93. Therefore, even if the bag body 63 is pulled by the user when attaching the blood pressure measurement device 1 to the wrist 200, the tensile force does not act between the one end of the bag body 63 and the one end of the attaching portion 64. Therefore, the connecting portions 84, 93 are not pressed by the edges of the holes 65A, 65B of the bag body 63, and therefore the connecting portions 84, 93 do not press against the connected portions 38A, 38B in a direction intersecting the direction in which the connecting portions 84, 93 protrude.

[0094] Furthermore, the connecting portions 84, 93 and the connected portions 38A, 38B are configured so that one is inserted into the other, which allows the connecting portions 84, 93 to be easily connected to the connected portions 38A, 38B.

[0095] Furthermore, since the connection parts 38A, 38B are provided on the wrist 200 side of the case 11, when the blood pressure measurement device 1 is attached to the wrist 200, the wrist 200 restricts the movement of the connection parts 84, 93 in the direction of coming out of the connection parts 38A, 38B.

[0096] Therefore, the holding force for holding the connecting parts 84, 93 inserted into the connected parts 38A, 38B is, when the blood pressure measurement device 1 is removed from the wrist 200, 93 The holding force may be such that it is possible to prevent the connector from coming off.

[0097] Furthermore, since the attachment body 66 is flexible, the movable range of the belt 4 around the spring bar 35 can be increased. This makes it easy to attach and detach the blood pressure measurement device 1 to and from the wrist 200.

[0098] Furthermore, by using a hook-and-loop fastener as the fixing part 62 for fixing the bag body 63 wrapped around the wrist 200, the blood pressure measurement device 1 of The length of the bag body 63 along the circumferential direction of the wrist 200 can be adjusted steplessly.

[0099] As described above, the blood pressure measurement device 1 according to this embodiment can provide a blood pressure measurement device 1 that can prevent a decrease in blood pressure measurement accuracy.

[0100] In the above example, the belt 4 of the blood pressure measurement device 1 is made of cloth, but is not limited to this. In other examples, the belt 4 may be made of resin.

[0101] In the above example, the mounting portion 64 is configured to be detached from the device body 3 by removing the mount portion 35 from the device body 3, but this is not limiting. In other examples, the mounting portion 64 may be configured to be detachably attached to the mount portion 35. For example, as in the modified example shown in FIG. 10 , the support portion 67 may be configured by folding back the end of the mounting portion main body 66 on the device body 3 side and fixing this folded back portion to another part of the mounting portion main body 66 with a detachable fixing portion 69 such as a button. Instead of a button, for example, a hook-and-loop fastener may also be used as the fixing portion 69.

[0102] By configuring the support portion 67 in this way, the belt 4 can be supported by the device main body 3. fromWhen removing the bag body 63, the fixation by the detachable fixing parts 69 is released, and the bag body 63 can be removed from the device main body 3 without removing the attachment parts 35 from the pair of first lugs 37A. This improves the efficiency of the work of attaching and detaching the belt 4 to and from the device main body 3.

[0103] Furthermore, blood pressure measuring device 1 may further include curler 5, as in the modified example shown in FIG. 11. Curler 5 is configured in a band shape that curves along the circumferential direction of wrist 200, with one end and the other end spaced apart. Cuff structure 6 is disposed on the inner circumferential surface of curler 5. Curler 5 holds a portion of cuff structure 6 along the shape of the inner circumferential surface of curler 5. Curler 5 , Be It will be housed within Route 4.

[0104] For example, curler 5 holds cuff structure 6 by fixing cuff structure 6 with a bonding layer provided between curler 5 and cuff structure 6. Curler 5 is formed with a hole in which first connecting portion 84 is disposed and a hole in which second connecting portion 93 is disposed.

[0105] Curler 5 also has a hardness that allows it to be flexible and have shape retention. Here, flexibility refers to the ability to deform its shape in the radial direction when an external force is applied to curler 5 by belt 4. For example, flexibility refers to the ability to move close to wrist 200, conform to the shape of wrist 200, or deform its shape in a side view so as to follow the shape of wrist 200 when curler 5 is pressed by belt 4. Shape retention refers to the ability to maintain the shape of curler 5 when no external force is applied. 5 For example, in this embodiment, shape retention means that curler 5 can maintain a shape that curves along the circumferential direction of wrist 200.

[0106] In the above example, the connecting portions 84, 93 are formed in a protruding shape that protrudes outward, but the present invention is not limited to this. For example, the connecting portions 38A, 38B formed on the device body 3 may be formed in a shape that protrudes from the bottom wall portion 34, and the connecting portions 84, 93 may be formed in a hole shape, and the connecting portions 38A, 38B may be inserted into the connecting portions 84, 93 to connect the connecting portions 84, 93 and the connecting portions 38A, 38B.

[0107] In the above example, the belt 4 is folded back at the shaft 36 and fixed at the fixing portion 62, but is not limited to this. In another example, the bag body 63 and the attachment portion 64 may be used as one of the belt members of a belt that is provided with belt members fixed at symmetrical positions in the circumferential direction on the outer circumferential surface of the device main body 3 and that are connected to each other by, for example, a buckle.

[0108] In the above example, as an example of a configuration in which one of the connecting portions 84, 93 and the connected portions 38A, 38B is inserted into the other, the connecting portions 84, 93 are configured to protrude and are inserted into the connected portions 38A, 38B. However, this is not limiting. In another example, the connected portions 38A, 38B may be inserted into the connecting portions 84, 93.

[0109] That is, the present invention is not limited to the above-described embodiments, and various modifications can be made in the implementation stage without departing from the spirit of the invention. Furthermore, the embodiments may be implemented in appropriate combinations where possible, and in such cases, the combined effects can be obtained. Furthermore, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining the disclosed multiple constituent elements. For example, if the problem can be solved and the effects can be obtained even if some constituent elements are deleted from all the constituent elements shown in the embodiments, the configuration from which these constituent elements are deleted can be extracted as an invention. [Explanation of symbols]

[0110] 1...Blood pressure measuring device 3...Device body 4...Belt 5... Carla 6...Cuff structure 7...Mounting part 8…Fixed part 11...Case 12...Display section 13...Operation unit 14...Pump 31...Outer case 32...Windshield 33...Case body 34...Bottom wall 34a…External surface 35...Attachment part 36...Shaft 37...Rug 37A…1st lug 37B...Second lug 38...Connected part 38A...First connected part 38B...Second connected part 41...Button 61...Belt body 62…Fixed part 62a...Hook part 62b...Loop section 63...Bag body 64...Mounting part 65...hole 65A...First hole 65B...Second hole 66...Mounting body 67...Support part 69…Fixed part 71...Compression cuff 71a...Passage part 72...Backboard 72a...Groove 73...Sensing cuff 75...Joining layer 81...Air bag 81a...welding Department 8 4...Connection 86...Sheet member 91...Air bag 91a...welded part 92...flow path body 92a...welded part 93...Connection 96...Seat section Material 2 00...Wrist 210...artery 211...Radial artery 212…ulnar artery

Claims

1. A blood pressure measurement device worn on a user's wrist, a case having a case body, an attachment portion provided on one of the outer peripheral surfaces of the case body at symmetrical positions in the circumferential direction, a shaft portion provided on the other of the outer peripheral surfaces, and a connection portion provided on the wrist side of the case body; a pump accommodated in the case body and fluidly connected to the connected portion; a cuff including a connecting portion provided at a portion of the case body facing a wrist side and connected to the connected portion, the cuff being fluidly connected to the pump via the connecting portion; a belt having a bag body that houses the cuff therein and is wrapped around the wrist, the bag body having a longitudinal end formed with a hole through which the connecting part is disposed, an attachment part having one end fixed to the one end side of the bag body and the other end attached to the attachment part, the length from the one end to the attachment part being shorter than the length from the one end to the connecting part disposed in the hole, and a fixing part that is provided on the bag body and fixes a part that is folded back at the shaft part of the bag body and stacked; A blood pressure measuring device comprising:

2. The blood pressure measurement device according to claim 1 , wherein the receptacle and the connecting portion are configured so that one is inserted into the other.

3. The blood pressure measurement device according to claim 1 , wherein the attachment portion is flexible.

4. The blood pressure measurement device according to claim 2 , wherein the bag body and the attachment portion are made of fabric.

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