Cuff structure and blood pressure measurement device

Abstract

The present invention provides a cuff structure and a blood pressure measurement device that can closely adhere the sensing cuff to the area where the artery of the wrist is located. The cuff structure (6) is provided on the retaining ring (5) of the blood pressure measurement device (1), and the blood pressure measurement device (1) includes: a device main body (3); and a retaining ring (5) provided on the device main body (3) and bent following the circumference of the wrist (200). The cuff structure (6) includes: a sensing cuff (73) provided on the inner circumferential surface side of the retaining ring (5) and contacting the area where the artery (210) of the wrist (200) is located; a pressing cuff (71), a part of which is provided between the retaining ring (5) and the sensing cuff (73), and a part of the other part is arranged in the area of the sensing cuff on the outer circumferential surface of the retaining ring (5) in a state where the blood pressure measurement device is worn on the wrist (200), and presses the sensing cuff (73) against the wrist (200) by expansion.

Description

Technical Field

[0001] The present invention relates to a cuff structure for a blood pressure measuring device and a blood pressure measuring device. Background Art

[0002] In recent years, blood pressure measuring devices for blood pressure measurement have been used not only in medical facilities but also at home as a means of confirming health status. For example, a blood pressure measuring device expands and contracts a cuff wound around the upper arm or wrist of a living body, and detects the pressure of the cuff through a pressure sensor, thereby detecting the vibration of the arterial wall to measure blood pressure.

[0003] As such a blood pressure measuring device, there is known a so-called integrated type blood pressure measuring device in which a cuff and a device body for supplying fluid to the cuff are integrated. Moreover, in the integrated type blood pressure measuring device, wearable devices worn on the wrist have also been considered (for example, refer to Patent Document 1).

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2019-118418 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] For the above-mentioned blood pressure measuring device, it is required that the sensing cuff can closely adhere to the area where the artery of the wrist is located.

[0009] Therefore, an object of the present invention is to provide a cuff structure and a blood pressure measuring device that can make the sensing cuff closely adhere to the area where the artery of the wrist is located.

[0010] Technical Solution

[0011] According to one aspect, there is provided a cuff structure provided on a ferrule of a blood pressure measuring device, the blood pressure measuring device including: a device body; and the ferrule provided on the device body and curved in imitation of the circumference of the wrist. The cuff structure includes: a sensing cuff provided on the inner circumferential surface side of the ferrule and in contact with the area where the artery of the wrist is located; and a cuff, a part of which is provided between the ferrule and the sensing cuff, and a part of the other part is arranged in the area of the sensing cuff on the outer circumferential surface of the ferrule in a state where the blood pressure measuring device is worn on the wrist, and presses the sensing cuff against the wrist by expansion.

[0012] The sensing cuff and the cuff are expanded by being supplied with fluid, and include a bag-shaped structure such as an air bag.

[0013] According to this solution, the sensing cuff is pressed against the wrist by the cuff disposed between the sensing cuff and the collar and the cuff disposed on the outer peripheral surface of the collar, thereby pressing the sensing cuff against the wrist. Therefore, the pressing force for pressing the sensing cuff against the area where the artery of the wrist is located can be increased, and thus the sensing cuff can be closely attached to the wrist.

[0014] In the cuff structure of the above solution, a cuff structure is provided, wherein the cuff has the following length: in a state where it is worn on the wrist with any circumference from the assumed shortest circumference to the longest circumference of the wrist, a part of the other part is disposed in the area of the sensing cuff on the outer peripheral surface of the collar.

[0015] According to this solution, for a wrist with any circumference from the assumed shortest circumference to the longest circumference of the wrist, the sensing cuff can be closely attached to the area where the artery of the wrist is located.

[0016] In the cuff structure of the above solution, a cuff structure is provided, wherein the two ends of the collar are separated, and the cuff is configured in a shape extending from a part of the one part to a part of the other part.

[0017] According to this solution, an increase in the number of parts of the cuff structure can be prevented.

[0018] In the cuff structure of the above solution, a cuff structure is provided, wherein the cuff includes a first cuff disposed between the collar and the sensing cuff and a second cuff disposed on the back of the hand of the wrist of the collar.

[0019] In a state where the blood pressure measuring device is worn on the wrist, a part of the second cuff is disposed in the area of the sensing cuff on the outer peripheral surface of the collar.

[0020] According to this solution, even in a configuration including a first cuff and a second cuff in addition to the sensing cuff, the sensing cuff can be pressed by the first cuff disposed between the sensing cuff and the collar and the second cuff disposed on the outer peripheral surface of the collar, thereby increasing the pressing force for pressing the sensing cuff against the wrist, and thus the sensing cuff can be closely attached to the wrist.

[0021] According to one aspect, there is provided a blood pressure measuring device including: a device main body; a retaining ring provided on the device main body and curved following the circumference of the wrist; a sensing cuff provided on the inner circumferential surface side of the retaining ring and contacting the area where the artery of the wrist is located; and a cuff, a part of which is provided between the retaining ring and the sensing cuff, and a part of the other part of the cuff is arranged in the area of the sensing cuff on the outer circumferential surface of the retaining ring when the retaining ring, the sensing cuff, and the cuff are worn on the wrist, and the sensing cuff is pressed against the wrist by inflation.

[0022] Here, the state where the retaining ring, the sensing cuff, and the cuff are worn on the wrist is the state where the blood pressure measuring device is worn on the wrist.

[0023] According to this aspect, the sensing cuff is pressed against the wrist by the cuff disposed between the sensing cuff and the retaining ring and the cuff disposed on the outer circumferential surface of the retaining ring. Therefore, the pressing force for pressing the sensing cuff against the area where the artery of the wrist is located can be increased, and thus the sensing cuff can be closely attached to the wrist.

[0024] In the blood pressure measuring device according to the above aspect, there is provided a blood pressure measuring device, wherein the cuff has such a length that in the state where the retaining ring, the sensing cuff, and the cuff are worn on the wrist having any circumference from the assumed shortest circumference to the longest circumference of the wrist, a part of the other part is arranged in the area of the sensing cuff on the outer circumferential surface of the retaining ring.

[0025] According to this aspect, for a wrist having any circumference from the assumed shortest circumference to the longest circumference of the wrist, the sensing cuff can be closely attached to the area where the artery of the wrist is located.

[0026] In the blood pressure measuring device according to the above aspect, there is provided a blood pressure measuring device, wherein the two ends of the retaining ring are separated, and the cuff is configured in a shape extending from the part to a part of the other part.

[0027] According to this aspect, an increase in the number of parts of the blood pressure measuring device can be prevented.

[0028] In the blood pressure measuring device according to the above aspect, there is provided a blood pressure measuring device, wherein the cuff includes a first cuff provided between the retaining ring and the sensing cuff and a second cuff provided on the back of the hand of the wrist of the retaining ring, and in the state where the retaining ring, the sensing cuff, the first cuff, and the second cuff are worn on the wrist, a part of the second cuff is arranged in the area of the sensing cuff on the outer circumferential surface of the retaining ring.

[0029] According to this solution, even if the configuration includes the first cuff and the second cuff in addition to the sensing cuff, the sensing cuff can be pressed by the first cuff disposed between the sensing cuff and the retaining ring and the second cuff disposed on the outer peripheral surface of the retaining ring, thereby increasing the pressing force for pressing the sensing cuff against the wrist. Therefore, the sensing cuff can be made to closely adhere to the wrist.

[0030] In the blood pressure measuring device according to the above solution, there is provided a blood pressure measuring device in which, in the retaining ring, one end and the other end are separated, and one end overlaps a part of the other part of the retaining ring.

[0031] According to this solution, the outer peripheral surface of the cuff is supported by the retaining ring. Moreover, since the cuff is supported by the retaining ring, the expansion direction of the cuff due to the expansion of the cuff can be made to be the direction of pressing the sensing cuff against the wrist. Therefore, the expansion of the cuff can be efficiently used as the pressing force for pressing the sensing cuff against the wrist.

[0032] Advantages of the Invention

[0033] The present invention can provide a cuff structure and a blood pressure measuring device capable of making the sensing cuff closely adhere to the area where the artery of the wrist is located. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 FIG. is a perspective view showing the configuration of the blood pressure measuring device according to the first embodiment of the present invention.

[0035] Figure 2 FIG. is an explanatory view showing a state in which the blood pressure measuring device according to the first embodiment of the present invention is worn on the wrist.

[0036] Figure 3 FIG. is a cross-sectional view showing the configuration of the retaining ring and the cuff structure of the blood pressure measuring device according to the first embodiment of the present invention.

[0037] Figure 4 FIG. is a cross-sectional view showing the configuration of the above-mentioned retaining ring and the above-mentioned cuff structure.

[0038] Figure 5 FIG. is a top view showing the configuration of the above-mentioned cuff structure.

[0039] Figure 6 FIG. is a top view showing the configuration of the above-mentioned cuff structure.

[0040] Figure 7 FIG. is a cross-sectional view showing the configuration of the sensing cuff of the above-mentioned cuff structure.

[0041] Figure 8 FIG. is a perspective view showing an example of a state in which the blood pressure measuring device according to the first embodiment of the present invention is worn on the wrist.

[0042] Figure 9 This is a perspective view showing an example of wearing the blood pressure measuring device according to the first embodiment of the present invention on the wrist.

[0043] Figure 10 This is a perspective view showing an example of wearing the blood pressure measuring device according to the first embodiment of the present invention on the wrist.

[0044] Figure 11 This is a cross-sectional view schematically showing the state in which the blood pressure measuring device according to the first embodiment of the present invention is assembled on the wrist.

[0045] Figure 12 This is an explanatory view showing the state in which the blood pressure measuring device according to the first embodiment of the present invention is worn on the wrist.

[0046] Figure 13 This is a side view showing the configuration of the blood pressure measuring device according to the second embodiment of the present invention.

[0047] Figure 14 This is an explanatory view showing the state in which the blood pressure measuring device according to the second embodiment of the present invention is worn on the wrist.

[0048] Figure 15 This is a cross-sectional view showing the configuration of the cuff structure and the snap ring of the blood pressure measuring device according to the second embodiment of the present invention.

[0049] Figure 16 This is a top view showing the configuration of the above-mentioned cuff structure.

[0050] Figure 17 This is a top view showing the configuration of the above-mentioned cuff structure.

[0051] Figure 18 This is an explanatory view showing the state in which the blood pressure measuring device according to the second embodiment of the present invention is worn on the wrist.

[0052] Figure 19 This is an explanatory view showing the state in which the blood pressure measuring device according to the third embodiment of the present invention is worn on the wrist.

[0053] Figure 20 This is a top view showing the configuration of the cuff structure of the blood pressure measuring device according to the third embodiment of the present invention.

[0054] Figure 21 This is a top view showing the configuration of the above-mentioned cuff structure.

[0055] Figure 22 This is an explanatory view showing the state in which the blood pressure measuring device according to the fourth embodiment of the present invention is worn on the wrist.

[0056] Figure 23This is a top view showing the configuration of the cuff structure of the blood pressure measuring device according to the fourth embodiment of the present invention.

[0057] Figure 24 This is an explanatory diagram showing the state in which the blood pressure measuring device according to the fourth embodiment of the present invention is worn on the wrist.

[0058] Figure 25 This is an explanatory diagram showing the state in which the blood pressure measuring device according to the modified example of the first to fourth embodiments is worn on the wrist.

[0059] Figure 26 This is an explanatory diagram showing the state in which the above-mentioned blood pressure measuring device is worn on the wrist.

[0060] Figure 27 This is an explanatory diagram showing the state in which the blood pressure measuring device according to the modified example of the first to fourth embodiments is worn on the wrist.

[0061] Figure 28 This is an explanatory diagram showing the state in which the blood pressure measuring device according to the modified example of the first to fourth embodiments is worn on the wrist.

[0062] Figure 29 This is an explanatory diagram showing the state in which the above-mentioned blood pressure measuring device is worn on the wrist. Detailed Embodiment

[0063] Hereinafter, an example of the blood pressure measuring device 1 according to the first embodiment of the present invention will be shown as follows using Figures 1 to 12 .

[0064] Figure 1 This is a perspective view showing the configuration of the blood pressure measuring device 1 according to the first embodiment of the present invention. Figure 2 This is an explanatory diagram showing the state in which the blood pressure measuring device 1 is worn on the wrist 200. Figure 2 An example of the state in which the blood pressure measuring device 1 is worn on the wrist 200 having the shortest assumed circumference among the wrists 200 of a plurality of users set as the use object of the blood pressure measuring device 1 is shown. Figure 2 The shown cuff structure 6 is in an inflated state.

[0065] Figure 3 This is a cross-sectional view showing the configuration of the snap ring 5 and the cuff structure 6 of the blood pressure measuring device 1. Figure 4 This is a cross-sectional view showing the configuration of the snap ring 5 and the cuff structure 6 of the blood pressure measuring device 1. Figure 5 This is a top view of the surface of the cuff structure 6 of the blood pressure measuring device 1 fixed to the inner peripheral surface of the snap ring 5. Figure 6It is a plan view of the surface fixed to the inner peripheral surface 5c of the retaining ring 5, showing the structure of the cuff structure 6.

[0066] Figure 7 It is a cross-sectional view showing the structure of the pressure cuff 71 of the cuff structure 6. Figures 8 to 10 It is a perspective view showing an example of wearing the blood pressure measuring device 1 on the wrist 200. Figure 11 It is a cross-sectional view schematically showing the state of the blood pressure measuring device 1 worn on the wrist 200.

[0067] Figure 12 It is an explanatory view showing the state of the blood pressure measuring device 1 worn on the wrist 200. Figure 12 It shows an example of the state of the blood pressure measuring device 1 worn on the wrist 200 having the longest assumed circumference among the wrists 200 of multiple users assumed to be the users of the blood pressure measuring device 1. Figure 12 The shown cuff structure 6 is in an inflated state.

[0068] As Figure 1 and Figure 2 As shown, the blood pressure measuring device 1 includes: a device main body 3; a band 4 for fixing the device main body 3 to the wrist 200; a retaining ring 5 disposed between the band 4 and the wrist 200; and a cuff structure 6.

[0069] The device main body 3 includes, for example: a housing 11, a display unit 12, and an operation unit 13. In addition, the device main body 3 includes a pump for inflating the cuff structure 6, a flow path unit fluidly connecting the pump and the cuff structure 6, and a control board inside the housing 11.

[0070] The housing 11 includes: a contour housing 31; and a windshield 32 covering the opening of the contour housing 31 on the side opposite to the wrist 200 side.

[0071] The contour housing 31 is formed in a cylindrical shape. The contour housing 31 includes: a pair of ears 31a respectively provided at symmetric positions in the circumferential direction of the outer peripheral surface; and spring rods 31b respectively provided between the two pairs of ears 31a.

[0072] The windshield 32 is, for example, a circular glass plate.

[0073] The display unit 12 is disposed directly below the windshield 32. As Figure 1 shown, the display unit 12 is electrically connected to the control board 20. The display unit 12 is, for example, a liquid crystal display or an organic electroluminescent display. The display unit 12 displays various information including date and time, blood pressure values such as maximum blood pressure and minimum blood pressure, and measurement results such as heart rate.

[0074] The operation unit 13 is configured to be able to input instructions from the user. For example, as Figure 1As shown, the operation unit 13 includes a plurality of buttons 41 provided on the housing 11 and a sensor that detects the operation of the buttons 41. For example, three buttons 41 are provided.

[0075] The band 4 includes: a first band 61 provided on a pair of ears 31a and a spring rod 31b on one side; and a second band 62 provided on a pair of ears 31a and a spring rod 31b on the other side. The band 4 is wound around the wrist 200 via a snap ring 5.

[0076] The first band 61 is a so-called master band and is formed in a band shape that can be connected to the second band 62. The first band 61 has a band portion 61a and a buckle 61b. The band portion 61a is formed in a band shape. The band portion 61a is formed of an elastically deformable resin material.

[0077] One end of the band portion 61a is supported by the spring rod 31b on one side. The buckle 61b is provided at the other end of the band portion 61a. The buckle 61b has a rectangular frame-shaped body 61e and a tongue 61f rotatably assembled to the body 61e.

[0078] The second band 62 is a so-called hook band and is formed in a band shape with a width that can be inserted into the body 61e. The second band 62 is formed of an elastically deformable resin material. In addition, the second band 62 has a plurality of small holes 62a for inserting the tongue 61f. One end of the second band 62 is supported by the spring rod 31b on the other side.

[0079] In the band 4 configured as described above, the second band 62 is inserted into the body 61e and the tongue 61f is inserted into the small holes 62a, whereby the first band 61 and the second band 62 are connected integrally and together with the contour housing 31 form a ring that conforms to the circumference of the wrist 200. The band 4 is formed in a ring that conforms to the circumference of the wrist 200, whereby the snap ring 5 is pressed and the snap ring 5 is elastically deformed in a manner that conforms to the circumference of the wrist 200 of the wearer of the blood pressure measuring device 1.

[0080] As Figure 1 and Figure 2 shown, the snap ring 5 is formed in a band shape that bends conforming to the circumference of the wrist 200. The snap ring 5 is formed such that one end 5a is separated from the other end 5b. In the snap ring 5, for example, the outer surface on the side of the other end 5b is fixed to the device main body 3. One end 5a is the end on the palm side of the wrist 200. The other end 5b is the end on the back side of the wrist 200. The snap ring 5 is formed of a resin material, for example.

[0081] The snap ring 5 is formed such that the length from the device main body 3 to the other end 5b is shorter than the length from the device main body 3 to the one end 5a. In the snap ring 5, the short dimension side from the device main body 3 to the other end 5b is disposed on the back side of the wrist 200. In the snap ring 5, the long dimension side from the device main body 3 to the one end 5a extends from the back side of the wrist 200 through one side to the palm side of the wrist 200.

[0082] Such a retaining ring 5 is fixed to the contour housing 31 with one end 5a and the other end 5b facing the first belt 61 of the belt 4.

[0083] In addition, the retaining ring 5 has a hardness with flexibility and shape retention. Here, flexibility means that when an external force of the belt 4 is applied to the retaining ring 5, the shape deforms radially. For example, flexibility means that when the retaining ring 5 is pressed by the belt 4, the shape when viewed from the side deforms in a shape close to, along, or conforming to the shape of the wrist 200. In addition, shape retention means that when no external force is applied, the retaining ring 5 can maintain the pre-shaped shape. For example, in the present embodiment, shape retention means that the shape of the retaining ring 5 can maintain the shape bent along the circumference of the wrist 200.

[0084] The retaining ring 5 is provided with a cuff structure 6 on the inner peripheral surface. The retaining ring 5 holds a part of the cuff structure 6 along the shape of the inner peripheral surface 5c of the retaining ring 5. For example, the retaining ring 5 fixes the cuff structure 6 by a bonding layer 75 provided between the retaining ring 5 and the cuff structure 6, thereby holding the cuff structure 6. In the present embodiment, the bonding layer 75 is an adhesive or a double-sided tape.

[0085] In the present embodiment, as Figures 1 to 7 shown, the cuff structure 6 includes a pressure cuff (cuff) 71, a back plate 72, and a sensing cuff 73. The pressure cuff 71 is an example of a cuff disposed between the sensing cuff 73 and the retaining ring 5 and in the region of the sensing cuff 73 on the outer peripheral surface 5d of the retaining ring 5. The cuff structure 6 includes a bonding layer 75 that joins each component to each other and the retaining ring 5 and the pressure cuff 71.

[0086] In the cuff structure 6, the pressure cuff 71, the back plate 72, and the sensing cuff 73 are stacked and disposed on the retaining ring 5. As Figure 1 and Figure 2 shown, as a specific example, for the cuff structure 6, the pressure cuff 71 is fixed to the inner peripheral surface 5c of the retaining ring 5. Moreover, on the inner peripheral surface of the pressure cuff 71 on the palm side of the wrist 200, the back plate 72 is fixed from the inner peripheral surface of the pressure cuff 71 toward the wrist 200 side. Moreover, the sensing cuff 73 is fixed to the inner peripheral surface of the back plate 72 on the palm side. Each component of the cuff structure 6 is fixed to the component adjacent in the stacking direction by the bonding layer 75.

[0087] The pressure cuff 71 is fluidly connected to the pump via a flow path portion. The pressure cuff 71 is configured as a strip extending in one direction. A part of the pressure cuff 71 is fixed to the inner peripheral surface of the retaining ring 5 by the bonding layer 75.

[0088] In addition, the pressing cuff 71 is set to the following length: in a state where the blood pressure measuring device 1 is attached to the wrist 200 having any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, a part of the pressing cuff 71 is located in the region where the sensing cuff 73 is located on the outer peripheral surface 5d of the retaining ring 5.

[0089] Therefore, the pressing cuff 71 is configured to have a shape that protrudes in the circumferential direction of the retaining ring 5 beyond the other end 5b of the retaining ring 5. The portion of the pressing cuff 71 that protrudes beyond the other end 5b of the retaining ring 5 in the circumferential direction of the retaining ring 5 is at least disposed in the region where the sensing cuff 73 is located on the outer peripheral surface 5d of the retaining ring 5 in a state where the blood pressure measuring device 1 is attached to the wrist 200.

[0090] That is, the length of the portion of the pressing cuff 71 that protrudes beyond the other end 5b of the retaining ring 5 is set to the following length: in a state where the blood pressure measuring device 1 is attached to the wrist 200 having any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, the pressing cuff 71 is at least located in the region where the sensing cuff 73 is located on the outer peripheral surface 5d of the retaining ring 5.

[0091] Here, as Figure 2 shown, the wrist 200 with the assumed shortest circumference of the wrist 200 refers to the wrist 200 with the shortest circumference among the wrists 200 of a plurality of users set as the use objects of the blood pressure measuring device 1. As Figure 12 shown, the wrist 200 with the assumed longest circumference of the wrist 200 refers to the wrist 200 of the user with the longest circumference among the wrists 200 of a plurality of users assumed to be the use objects of the blood pressure measuring device 1.

[0092] Moreover, the length of the portion of the pressing cuff 71 that protrudes from the other end 5b of the retaining ring 5 is set to the following length: in a state where the blood pressure measuring device 1 is attached to the wrist 200 with the assumed shortest circumference of the wrist 200, it does not contact the device main body 3.

[0093] One end 71a of the pressing cuff 71 is disposed, for example, near one end 5a on the palm side of the wrist 200 on the inner peripheral surface 5c of the retaining ring 5.

[0094] In addition, as Figure 5 and Figure 6 shown, the pressing cuff 71 has an insertion portion 71c on, for example, the middle abdomen in the long dimension direction of the pressing cuff 71, which can accommodate a part of the sensing cuff 73. The insertion portion 71c is configured, for example, to be recessed in the short dimension direction of the pressing cuff 71 along a part of the edge in the long dimension direction of the pressing cuff 71. The insertion portion 71c is configured to enable the sensing cuff 73 to pass from the inner peripheral surface side of the pressing cuff 71 to the side of the retaining ring 5.

[0095] As Figures 3 to 4 shown, the pressing cuff 71 includes, for example, a plurality of air bags 81 and a connecting portion 84 provided at the connecting portion of the air bags 81 facing the snap ring 5. The plurality of air bags 81 are, for example, two air bags 81. Such a pressing cuff 71 is formed by welding a plurality of sheet members 86 together. The connecting portion 84 is connected to the flow path portion. By connecting the connecting portion 84 to the flow path portion, the pressing cuff 71 is fluidly connected to the pump.

[0096] Here, the air bag 81 refers to a bag-shaped structure. In the present embodiment, the blood pressure measuring device 1 is configured to use air by a pump. Therefore, the air bag is used for illustration. However, in the case of using a fluid other than air, the bag-shaped structure may be a fluid bag that expands by the fluid. The plurality of air bags 81 are stacked and fluidly communicate in the stacking direction.

[0097] The air bag 81 is formed in a rectangular bag shape that is long in one direction. In addition, the width of the air bag 81 in the short dimension direction is set to the same width as the width of the snap ring 5 in the short dimension direction. The air bag 81 is formed, for example, by combining two sheet members 86 and welding the welding portion 81a by heat as shown in Figures 3 to 6 to form a rectangular frame shape that is long in one direction.

[0098] In addition, the double-layer air bag 81 is formed by welding and combining two air bags 81 together by heat, or after welding the opposing sheet members 86 of adjacent air bags 81 to each other, welding the sheet members 86 constituting the air bag 81 to these opposing sheet members 86 respectively.

[0099] As a specific example, the double-layer air bag 81 fluidly communicates through an opening provided in the sheet members 86 facing each other. In addition, in the double-layer air bag 81, the opposing sheet members 86 are bridged and welded into a quadrilateral frame shape smaller than the welding portion 81a located at the outer periphery. By surrounding a plurality of openings with this bridging welding portion 81b, adjacent air bags 81 are formed as one body. Then, the double-layer air bag 81 fluidly communicates inside the bridging welding portion 81b. Here, the bridging in the bridging welding and the bridging welding portion 81b means integrating adjacent air bags 81 into one body.

[0100] The connecting portion 84 is, for example, a pipe joint. The connecting portion 84 is connected to the flow path portion of the device main body 3. The connecting portion 84 is provided, for example, at a portion facing the device main body 3 of the air bag 81 that is adjacently disposed to the snap ring 5. The tip of the connecting portion 84 protrudes from the sheet member 86 facing the snap ring 5 among the two sheet members 86 constituting the air bag 81. The connecting portion 84 is connected to the flow path portion.

[0101] As a specific example, as shown in Figure 3 and Figure 4As shown, the pressing cuff 71 includes, starting from the wrist 200 side: a first sheet member 86a; a second sheet member 86b that forms an airbag 81 of the first layer together with the first sheet member 86a; a third sheet member 86c that is integrally joined to the second sheet member 86b; and a fourth sheet member 86d that forms an airbag 81 of the second layer and a flow path body 83 together with the third sheet member 86c. It should be noted that the pressing cuff 71 joins adjacent sheet members 86 by welding with heat, thereby being formed as one body.

[0102] The first sheet member 86a and the second sheet member 86b are formed in the same rectangular shape as the airbag 81, and the peripheral portions of the four sides are welded, thereby forming the airbag 81. The second sheet member 86b and the third sheet member 86c are disposed opposite to each other and each have a plurality of openings 86b1, 86c1 that fluidly connect the two airbags 81. In addition, the second sheet member 86b and the third sheet member 86c are integrally joined by welding the peripheries of the plurality of openings 86b1, 86c1 with heat into a four-sided frame shape smaller than the four sides formed by welding the airbag 81.

[0103] The third sheet member 86c is formed, for example, to be able to form the shape of the airbag 81. The fourth sheet member 86d is formed, for example, to be able to form the shape of the airbag 81. In addition, the fourth sheet member 86d has, for example, a hole portion 86d1 into which the tip of the connecting portion 84 can be inserted.

[0104] The third sheet member 86c and the fourth sheet member 86d are disposed opposite to each other, welded along the peripheral shape of the airbag 81 with heat, and cut into a predetermined shape, thereby forming the airbag 81.

[0105] In the fourth sheet member 86d, the connecting portion 84 is disposed in the hole portion 86d1, and the periphery of the hole portion 86d1 and the connecting portion 84 are welded with heat. Moreover, the fourth sheet member 86d is joined to the inner peripheral surface 5c of the snap ring 5 via a bonding layer 75, and the third sheet member 86c is joined to the snap ring 5 via the bonding layer 75.

[0106] As Figure 1 and Figure 2 shown, the back plate 72 is formed in a plate shape that is long in one direction. One end 72b in the long dimension direction of the back plate 72 is disposed, for example, near one end 71a of the pressing cuff 71.

[0107] As Figure 3As shown, the back plate 72 is attached to the outer surface of the first sheet member 86a of the pressing cuff 71 through the bonding layer 75. The back plate 72 has shape-conforming properties. Here, the shape-conforming properties refer to the function that the back plate 72 can be deformed in a manner that conforms to the shape of the contacted part of the wrist 200 configured thereon. The contacted part of the wrist 200 refers to the area of ​​the wrist 200 that the back plate 72 faces. The contact here includes both direct contact and indirect contact via the sensing cuff 73.

[0108] For example, Figure 5 and Figure 6 As shown, the back plate 72 has a plurality of grooves 72a extending in a direction orthogonal to the long dimension direction on both main surfaces of the back plate 72. A plurality of grooves 72a are provided on each of the two main surfaces of the back plate 72. The plurality of grooves 72a provided on the two main surfaces are respectively opposed to each other in the thickness direction of the back plate 72. In addition, the plurality of grooves 72a are arranged at equal intervals in the long dimension direction of the back plate 72.

[0109] The portion having the plurality of grooves 72a is formed thinner than the portion not having the grooves 72a, and thus the portion having the plurality of grooves 72a is easily deformed, so that the back plate 72 has a shape-conforming property that deforms in accordance with the shape of the wrist 200 and extends in the circumferential direction of the wrist 200. The back plate 72 is formed to have a length that covers the palm side of the wrist 200. The back plate 72 transmits the pressing force from the pressing cuff 71 to the main surface of the back plate 72 side of the sensing cuff 73 while conforming to the shape of the wrist 200.

[0110] The sensing cuff 73 is connected to the pump fluid via the flow path. The sensing cuff 73 is fixed to the main surface of the back plate 72 on the wrist 200 side by the bonding layer 75. Figure 2 and Figure 12 As shown, the length of the long dimension direction of the sensing cuff 73 is set to be such that, relative to the wrist 200 of any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, the sensing cuff 73 contacts the area where at least one of the arteries 210 of the wrist 200, namely the radial artery 211 and the ulnar artery 212, exists.

[0111] The sensing cuff 73 is formed, for example, in the same shape as the back plate 72 in the longitudinal direction and the width direction of the back plate 72 or in a shape smaller than the back plate 72. The sensing cuff 73 compresses the region where the artery 210 is located on the palm side of the wrist 200 by expanding. The sensing cuff 73 is pressed toward the wrist 200 side by the inflated pressing cuff 71 via the back plate 72.

[0112] The length of the sensing cuff 73 along the longitudinal direction is set to, for example, the following length: Figure 2 As shown, the wrist 200 with the shortest circumference contacts the area where the radial artery 211 and the ulnar artery 212 are located; Figure 12As shown, it contacts the area where the wrist 200 with the longest circumference is located and where the radial artery 211 or the ulnar artery 212 is located. Specifically, the sensing cuff 73 is set to have a length substantially the same as the length from the radial artery 211 to the ulnar artery 212 in the circumferential direction of the wrist 200 with the shortest circumference.

[0113] As Figures 5 to 7 shown, the sensing cuff 73 includes, for example, an airbag 91, a flow path body 92 communicating with the airbag 91, and a connection portion 93 provided at the top end of the flow path body 92. One main surface of the airbag 91 of the sensing cuff 73 is fixed to the back plate 72. For example, the sensing cuff 73 is joined to the main surface on the wrist 200 side of the back plate 72 through a joining layer 75. Such a sensing cuff 73 is formed by welding two sheet members 96 together.

[0114] Here, the airbag 91 refers to a bag-shaped structure. In the present embodiment, the blood pressure measuring device 1 is configured to use air by a pump, so the airbag is used for illustration. However, in the case of using a fluid other than air, the bag-shaped structure may be a fluid bag that expands by the fluid.

[0115] The airbag 91 is configured in a rectangular shape that is long in one direction. The airbag 91 is formed, for example, by combining two sheet members 96 that are long in one direction, and as Figures 5 to 7 shown, the welding portion 91a is welded into a rectangular frame shape that is long in one direction by heat.

[0116] The flow path body 92 is integrally provided with a part of one edge portion in the long dimension direction of the airbag 91. As a specific example, the flow path body 92 is provided at the end of the airbag 91 close to the device main body 3. In addition, the flow path body 92 is formed in a shape that is long in one direction with a width smaller than the width in the short dimension direction of the airbag 91, and the top end is formed in a circular shape. The flow path body 92 has a connection portion 93 at the top end. The flow path body 92 is connected to the flow path portion 15 via the connection portion 93, and a flow path between the flow path portion 15 of the device main body 3 and the airbag 91 is formed.

[0117] The flow path body 92 is formed by welding a part of the sheet member 96 adjacent to the area of the sheet member 96 that forms the airbag 91 into a frame shape that is long in one direction in a state where the connection portion 93 is arranged in the two sheet members 96. A part of such a flow path body 92 is arranged, for example, from the inner circumferential surface side of the pressing cuff 71 to the snap ring 5 side through the insertion portion 71c of the pressing cuff 71. It should be noted that the airbag 91 is configured such that a part of the welding portion 91a that welds the two sheet members 96 into a rectangular frame shape is not welded, and is continuous with the welding portion 92a that forms the flow path body 92, thereby making the airbag 91 and the flow path body 92 in fluid communication.

[0118] The connecting portion 93 is, for example, a pipe joint. The connecting portion 93 is provided at the top end of the flow path body 92. Further, the top end of the connecting portion 93 protrudes to the outside from the sheet member 96 of the two sheet members 96 constituting the flow path body 92, which faces the snap ring 5 and the back plate 72. The connecting portion 93 is connected to the flow path portion.

[0119] As a specific example, as Figure 3 and Figure 7 shown, the sensing cuff 73 includes a fifth sheet member 96a and a sixth sheet member 96b starting from the wrist 200 side. It should be noted that the sensing cuff 73 is formed by joining adjacent sheet members 96 by welding with heat.

[0120] For example, the fifth sheet member 96a and the sixth sheet member 96b are configured to be able to form the shapes of the air bag 91 and the flow path body 92. The fifth sheet member 96a and the sixth sheet member 96b are arranged opposite to each other so that the air bag 91 and the flow path body 92 are in fluid communication, and are welded with heat along the peripheral shape of the air bag 91 and the flow path body 92 and cut into a specified shape, thereby forming the air bag 91 and the flow path body 92.

[0121] Further, the sixth sheet member 96b has, for example, a hole portion 96b1 into which the top end of the connecting portion 93 can be inserted. In the sixth sheet member 96b, the connecting portion 93 is disposed in the hole portion 96b1, and the periphery of the hole portion 96b1 and the connecting portion 93 are welded with heat. The sixth sheet member 96b is joined to the inner peripheral surface of the back plate 72 via the bonding layer 75.

[0122] Next, an example of a user wearing the blood pressure measuring device 1 on the wrist 200 will be described. Figures 8 to 10 This shows an example of a user wearing the blood pressure measuring device 1 on the wrist 200.

[0123] First, as Figure 8 shown, the user inserts the wrist 200 into the snap ring 5, for example. At this time, the portion of the pressing cuff 71 protruding from the other end 5b of the snap ring 5 may sag downward depending on the posture of the wrist 200.

[0124] Next, as Figure 9 shown, the user moves the portion of the pressing cuff 71 protruding from the other end 5b of the snap ring 5 toward the outer peripheral surface 5d side of the snap ring 5. Then, the user passes the second band 62 through the frame body 61e of the buckle 61b of the first band 61 with the hand opposite to the hand wearing the blood pressure measuring device 1. Next, the user stretches the second band 62 so that the member on the inner peripheral surface 5c side of the snap ring 5, that is, the cuff structure body 6, is closely attached to the wrist 200, and inserts the tongue 61f into the small hole 62a.

[0125] At this time, the portion of the pressure cuff 71 that protrudes from the other end 5b of the collar 5 is disposed in at least the region of the outer peripheral surface 5d of the collar 5 where the sensing cuff 73 is located, and is clamped between the collar 5 and the band 4.

[0126] Through this sequence, the blood pressure measuring device 1 is worn on the wrist 200.

[0127] In the blood pressure measuring device 1 configured in this way, as Figure 2 shown, in the state where the blood pressure measuring device 1 is worn on the wrist 200 having the assumed shortest circumference of the wrist 200, the sensing cuff 73 contacts the radial artery 211 and the ulnar artery 212 of the wrist 200. Moreover, a part of the portion of the pressure cuff 71 that protrudes from the other end 5b of the collar 5 is disposed in the region of the outer peripheral surface 5d of the collar 5 where the sensing cuff 73 is located.

[0128] Then, in this state, the pressure cuff 71 expands, so that the sensing cuff 73 is pressed against the wrist 200 side by the pressure cuff 71 disposed between the sensing cuff 73 and the collar 5. Moreover, the sensing cuff 73 is pressed against the wrist 200 side by the pressure cuff 71 in the region of the outer peripheral surface 5d of the collar 5 where the sensing cuff 73 is located. Therefore, the pressing force for pressing the sensing cuff 73 against the wrist 200 can be increased, and thus the sensing cuff 73 closely adheres to the regions where the radial artery 211 and the ulnar artery 212 of the wrist 200 are located.

[0129] As Figure 12 shown, in the state where the blood pressure measuring device 1 is worn on the wrist 200 having the assumed longest circumference of the wrist 200, the position of the sensing cuff 73 with respect to the wrist 200 deviates toward the radial artery 211 side with respect to the wrist 200 having the assumed shortest circumference. However, the sensing cuff 73 has such a length that in the state where the blood pressure measuring device 1 is worn on the wrist 200 having the assumed longest circumference of the wrist 200, the sensing cuff 73 contacts the region where the radial artery 211 is located. Therefore, the sensing cuff 73 is disposed in the region where the radial artery 211 of the wrist 200 is located. Moreover, the portion of the pressure cuff 71 that protrudes from the other end 5b of the collar 5 is disposed in at least the region of the outer peripheral surface 5d of the collar 5 where the sensing cuff 73 is located.

[0130] Then, in this state, the pressure cuff 71 expands, so that the sensing cuff 73 is pressed against the wrist 200 side by the pressure cuff 71 disposed between the collar 5 and the sensing cuff 73. Moreover, the sensing cuff 73 is pressed against the wrist 200 side by the pressure cuff 71 in the region of the outer peripheral surface 5d of the collar 5 where the sensing cuff 73 is located. Therefore, the pressing force for pressing the sensing cuff 73 against the wrist 200 can be increased, and thus the sensing cuff 73 closely adheres to the region where the artery 210 of the wrist 200 is located.

[0131] It should be noted that for the case where the blood pressure measurement device 1 is worn on the wrist 200 with a relatively long circumference, for example, when the blood pressure measurement device 1 is worn on the wrist 200 with the assumed longest circumference of the wrist 200, as shown in Figure 12 The position of the blood pressure measurement device 1 in the circumferential direction of the wrist 200 can also be adjusted as shown by the double-dashed line for the device main body 3. In this case, for example, the position of the blood pressure measurement device 1 in the circumferential direction of the wrist 200 can be adjusted such that the central portion in the circumferential direction of the sensing cuff 73 faces the radial artery 211.

[0132] Moreover, the pressing cuff 71 has such a length that in the state where the blood pressure measurement device 1 is worn on the wrist 200 with any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, the pressing cuff 71 faces at least the region where the sensing cuff 73 is located on the outer peripheral surface 5d of the retaining ring 5.

[0133] Therefore, for the wrist 200 with any circumference from the assumed shortest circumference to the longest circumference of the wrist 200, the sensing cuff 73 can be made to closely adhere to the region where the artery of the wrist 200 is located.

[0134] Moreover, the pressing cuff 71 is used as the cuff disposed between the sensing cuff 73 and the retaining ring 5 and the cuff disposed in the region where the sensing cuff 73 of the retaining ring 5 is located. In this way, by using one cuff, an increase in the number of parts of the blood pressure measurement device 1 can be prevented.

[0135] As described above, according to the blood pressure measurement device 1 of the present embodiment, the sensing cuff can be made to closely adhere to the region where the artery of the wrist 200 is located.

[0136] Next, an example of the blood pressure measurement device 1A according to the second embodiment of the present invention will be illustrated as follows. It should be noted that in the present embodiment, the same reference numerals are given to the same configurations as those in the first embodiment, and the description thereof is omitted. Figures 13 to 18 FIG.

[0137] Figure 13 is a side view showing the configuration of the blood pressure measurement device 1A. Figure 14 is an explanatory view showing the state where the blood pressure measurement device 1A is worn on the wrist 200. Figure 14 The shown wrist 200 is the wrist 200 of the user with the shortest wrist circumference among a plurality of users set as the usage objects of the blood pressure measurement device 1A. Figure 14 The shown cuff structure 6A is in an inflated state.

[0138] Figure 15 is a cross-sectional view showing the configuration of the cuff structure 6A and the retaining ring 5. Figure 16It is a plan view showing the configuration of the surface of the cuff structure 6A opposite to the surface fixed to the snap ring 5. Figure 17 It is a plan view showing the configuration of the surface of the cuff structure 6A fixed to the snap ring 5 side.

[0139] Figure 18 It is an explanatory view showing the state where the blood pressure measuring device 1A is worn on the wrist 200. Figure 18 The shown wrist 200 is the wrist 200 with the longest assumed circumference among the wrists 200 of multiple users set as the usage target of the blood pressure measuring device 1A. Figure 18 The shown cuff structure 6A is in an inflated state.

[0140] As Figure 13 shown, the blood pressure measuring device 1A is an electronic blood pressure measuring device worn on a living body. In the present embodiment, an electronic blood pressure measuring device in the form of a wearable device worn on the wrist 200 of a living body is used to explain the blood pressure measuring device 1A.

[0141] As Figure 13 shown, the blood pressure measuring device 1A includes a device main body 3A, a band 4, a snap ring 5, and a cuff structure 6A.

[0142] The snap ring 5 has a cuff structure 6A disposed on its inner peripheral surface. And the snap ring 5 holds the cuff structure 6A along the shape of the inner peripheral surface 5c of the snap ring 5. For example, the cuff structure 6A is fixed by a bonding layer 75 provided between the snap ring 5 and the cuff structure 6A, thereby holding the cuff structure 6A.

[0143] In the present embodiment, as Figure 13 and Figure 14 shown, the cuff structure 6A includes a pressing cuff 71A (first cuff), a back plate 72, a sensing cuff 73, and a stretching cuff (second cuff) 74. The cuff structure 6A includes a bonding layer 75 that joins each component to each other and the snap ring 5 and the pressing cuff 71A.

[0144] The pressing cuff 71A is fluidly connected to a pump via a flow path portion. The pressing cuff 71A presses the back plate 72 and the sensing cuff 73 against the wrist 200 side by expanding. The pressing cuff 71A is configured as a strip extending in one direction. The pressing cuff 71A is fixed to the inner peripheral surface of the snap ring 5 by the bonding layer 75.

[0145] One end 71a of the pressing cuff 71A is disposed near one end 5a of the snap ring 5 located on the palm side of the wrist 200. The pressing cuff 71A is configured without the portion of the sensing cuff 73 located on the outer peripheral surface 5d of the snap ring 5 in the first embodiment's pressing cuff 71. The pressing cuff 71A is not configured to protrude beyond the other end 5b of the snap ring 5.

[0146] Specifically, the pressing cuff 71A includes a plurality of air bags 81, a flow path body 83 communicating with the air bags 81, and a connecting portion 84 provided at the top end of the flow path body 83. The plurality of air bags 81 are, for example, double-layer air bags 81. The double-layer air bag 81 of the pressing cuff 71A has a size that faces the area of the inner peripheral surface 5c of the snap ring 5 that faces the palm side of the wrist 200.

[0147] As Figure 16 shown, the flow path body 83 is integrally provided with a part of the edge portion at one end in the long dimension direction of one air bag 81, for example, the air bag 81 adjacent to the snap ring 5. As a specific example, the flow path body 83 is provided at the end of the air bag 81 close to the device main body 3. In addition, the flow path body 83 is formed in a shape that is long in one direction with a width smaller than the width in the short dimension direction of the air bag 81, and the top end is formed in a circular shape. The flow path body 83 has a connecting portion 84 at the top end.

[0148] The flow path body 83 is formed by thermally welding a part of the sheet member 86 adjacent to the area of the sheet member 86 that constitutes the air bag 81 in a state where the connecting portion 84 is disposed between two sheet members 86 into a frame shape that is long in one direction.

[0149] It should be noted that the air bag 81 provided with the flow path body 83 is configured such that a part of the welding portion 81a that welds the two sheet members 86 into a rectangular frame shape is not welded and is continuous with the welding portion 83a that constitutes the flow path body 83, whereby the air bag 81 and the flow path body 83 are in fluid communication. The connecting portion 84 is connected to the flow path portion.

[0150] As Figures 13 to 15 shown, the stretching cuff 74 is fluidly connected to the pump via the flow path portion. The stretching cuff 74 is fixed to the back side of the wrist 200 of the snap ring 5. In addition, at least a part of the stretching cuff 74 protrudes from the other end 5b of the snap ring 5 and is disposed in the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5 in a state where the blood pressure measuring device 1A is worn.

[0151] The stretching cuff 74 presses the snap ring 5 in a manner of separating from the wrist 200 by expanding, thereby stretching the belt 4 and the snap ring 5 toward the back side of the wrist 200. The stretching cuff 74 includes, for example, a plurality of air bags 101 and a connecting portion 103 provided on the air bag 101 facing the snap ring 5. The plurality of air bags 101 are, for example, six-layer air bags 101.

[0152] Such a stretch cuff 74 is formed by welding a plurality of sheet members 106 together. Further, the stretch cuff 74 is fixed to the back side of the wrist 200 of the retaining ring 5. That is, the flow path body 83 of the pressure cuff 71A and the flow path body 92 of the sensing cuff 73 are disposed between the back side of the wrist 200 of the retaining ring 5 and the stretch cuff 74.

[0153] Further, the stretch cuff 74 is configured to have a greater thickness when inflated in the inflation direction than the thickness of the pressure cuff 71A when inflated in the inflation direction and the thickness of the sensing cuff 73 when inflated in the inflation direction. In the present embodiment, the inflation direction is the direction facing the retaining ring 5 and the wrist 200. That is, the airbag 101 of the stretch cuff 74 has a multi-layer structure with more layers than the airbag 81A of the pressure cuff 71A and the airbag 91 of the sensing cuff 73, and has a greater thickness when inflated from the retaining ring 5 toward the wrist 200 than the pressure cuff 71A and the sensing cuff 73.

[0154] In the present embodiment, the stretch cuff 74 including the six-layer airbag 101 includes: a first outer layer 111, which is composed of one airbag 101; a first intermediate layer 112, which is composed of two airbags 101 that are welded to the first outer layer 111 using heat and combined with the first outer layer 111 to form an integral body; a second intermediate layer 113, which is composed of two airbags 101 that are welded to the first intermediate layer 112 using heat and combined with the first intermediate layer 112 to form an integral body; and a second outer layer 114, which is composed of one airbag 101 that is welded to the second intermediate layer 113 using heat and combined with the second intermediate layer 113 to form an integral body.

[0155] Here, the airbag 101 refers to a bag-shaped structure. In the present embodiment, the blood pressure measuring device 1A is configured to use air by a pump, and thus the airbag is used for description. However, in the case of using a fluid other than air, the bag-shaped structure may be a fluid bag that expands by the fluid. A plurality of airbags 101 are stacked and fluidly connected in the stacking direction.

[0156] The airbag 101 is formed in a rectangular bag shape that is long in one direction. Further, the width of the airbag 101 in the short dimension direction is set to be the same as the width of the retaining ring 5 in the short dimension direction. The airbag 101 is formed, for example, by combining two sheet members 106 and welding the welded portion 101a using heat into a rectangular frame shape that is long in one direction as shown in Figure 16 and Figure 17 . The six-layer airbag 101 is fluidly connected through openings provided in the sheet members 106 facing each other.

[0157] In addition, in the six-layer airbag 101, by bridging and welding the opposing sheet members 106 in the first outer layer 111 and the first intermediate layer 112, the first intermediate layer 112 and the second intermediate layer 113, and the second intermediate layer 113 and the second outer layer 114 respectively into a four-sided frame shape smaller than the welding portion 81a located at the outer peripheral edge, and surrounding a plurality of openings through the bridging and welding portion 101b, adjacent airbags 101 are formed integrally, and are in fluid communication inside the bridging and welding portion 101b.

[0158] The first outer layer 111 is formed by one airbag 101 disposed on the wrist 200 side. The first outer layer 111 constitutes the first airbag 101 from the wrist 200 side in the six-layer airbag 101.

[0159] The first intermediate layer 112 is laminated on the first outer layer 111. The first intermediate layer 112 is formed by two airbags 101. The first intermediate layer 112 constitutes the second and third airbags 101 from the wrist 200 side in the six-layer airbag 101. The first intermediate layer 112 is formed by welding two airbags 101 together at the outer peripheral edge. In other words, the first intermediate layer 112 is formed by welding four sheet members 106 together in the shape of the outer peripheral edge of the airbag 101.

[0160] The second intermediate layer 113 is laminated on the first intermediate layer 112. The second intermediate layer 113 is formed by two airbags 101. The second intermediate layer 113 constitutes the fourth and fifth airbags 101 from the wrist 200 side in the six-layer airbag 101. The second intermediate layer 113 is formed by welding two airbags 101 together at the outer peripheral edge. In other words, the second intermediate layer 113 is formed by welding four sheet members 106 together in the shape of the outer peripheral edge of the airbag 101.

[0161] The second outer layer 114 is formed by one airbag 101 disposed on the snap ring 5 side. The second outer layer 114 constitutes the sixth airbag 101 from the wrist 200 side in the six-layer airbag 101.

[0162] The connecting portion 103 is, for example, a pipe joint. The connecting portion 103 is provided on the airbag 101 adjacent to the snap ring 5. The tip of the connecting portion 103 protrudes from the sheet member 106 of the two sheet members 106 constituting the airbag 101 that faces the snap ring 5. The connecting portion 103 is connected to the flow path portion.

[0163] As a specific example, such as Figure 15As shown, the stretch cuff 74 includes, starting from the wrist 200 side: a seventh sheet member 106a, an eighth sheet member 106b, a ninth sheet member 106c, a tenth sheet member 106d, an eleventh sheet member 106e, a twelfth sheet member 106f, a thirteenth sheet member 106g, a fourteenth sheet member 106h, a fifteenth sheet member 106i, a sixteenth sheet member 106j, a seventeenth sheet member 106k, and an eighteenth sheet member 106l. It should be noted that the stretch cuff 74 is formed integrally by joining adjacent sheet members 106 by heat welding.

[0164] The seventh sheet member 106a to the eighteenth sheet member 106l are formed in the same rectangular shape as the airbag 101. The seventh sheet member 106a and the eighth sheet member 106b are welded by heat along the peripheral shape of the four sides of the airbag 101, thereby forming the first layer of the airbag 101 starting from the wrist 200 side. That is, the seventh sheet member 106a and the eighth sheet member 106b form the first outer layer 111.

[0165] The eighth sheet member 106b and the ninth sheet member 106c are arranged opposite to each other and each have a plurality of openings 106b1, 106c1 that make the two airbags 101 fluidly continuous. In addition, the eighth sheet member 106b and the ninth sheet member 106c bridge and weld the peripheries of the plurality of openings 106b1, 106c1 by heat into a quadrilateral frame shape smaller than the four sides formed by welding the airbag 101, thereby joining them into one body.

[0166] The ninth sheet member 106c and the tenth sheet member 106d are welded by heat along the peripheral shape of the four sides of the airbag 101, thereby forming the second layer of the airbag 101 starting from the wrist 200 side.

[0167] The tenth sheet member 106d and the eleventh sheet member 106e are arranged opposite to each other and each have a plurality of openings 106d1, 106e1 that make the two airbags 101 fluidly continuous. The eleventh sheet member 106e and the twelfth sheet member 106f are welded by heat along the peripheral shape of the four sides of the airbag 101, thereby forming the third layer of the airbag 101 starting from the wrist 200 side.

[0168] It should be noted that the ninth sheet member 106c, the tenth sheet member 106d, the eleventh sheet member 106e, and the twelfth sheet member 106f are welded together by heat along the peripheral shape of the four sides of the airbag 101, thereby forming the first intermediate layer 112 that integrates the second and third layers of the airbag 101.

[0169] The twelfth sheet member 106f and the thirteenth sheet member 106g are arranged opposite to each other, and respectively have a plurality of openings 106f1, 106g1 that fluidly connect the two airbags 101. In addition, the twelfth sheet member 106f and the thirteenth sheet member 106g thermally bridge and weld the peripheries of the plurality of openings 106f1, 106g1 into a quadrilateral frame shape smaller than the four sides formed by welding the airbags 101, thereby being joined into one body.

[0170] The thirteenth sheet member 106g and the fourteenth sheet member 106h are welded by heat along the peripheral shape of the four sides of the airbag 101, thereby constituting the fourth layer of the airbag 101 from the wrist 200 side.

[0171] The fourteenth sheet member 106h and the fifteenth sheet member 106i are arranged opposite to each other, and respectively have a plurality of openings 106h1, 106i1 that fluidly connect the two airbags 101. The fifteenth sheet member 106i and the sixteenth sheet member 106j are welded by heat along the peripheral shape of the four sides of the airbag 101, thereby constituting the fifth layer of the airbag 101 from the wrist 200 side.

[0172] It should be noted that the thirteenth sheet member 106g, the fourteenth sheet member 106h, the fifteenth sheet member 106i, and the sixteenth sheet member 106j are welded together by heat along the peripheral shape of the four sides of the airbag 101, thereby constituting the second intermediate layer 113 that forms the fourth and fifth layer airbags 101 into one body.

[0173] The sixteenth sheet member 106j and the seventeenth sheet member 106k are arranged opposite to each other, and respectively have a plurality of openings 106j1, 106k1 that fluidly connect the two airbags 101. In addition, the seventeenth sheet member 106k is configured to be able to form the shape of the airbag 101, for example. The sixteenth sheet member 106j and the seventeenth sheet member 106k thermally bridge and weld the peripheries of the plurality of openings 106j1, 106k1 into a quadrilateral frame shape smaller than the four sides formed by welding the airbags 101, thereby being joined into one body.

[0174] The seventeenth sheet member 106k and the eighteenth sheet member 106l are welded using heat along the peripheral shape of the four sides of the airbag 101 and cut into a prescribed shape, thereby constituting the airbag 101.

[0175] In addition, the eighteenth sheet member 106l has, for example, a hole portion 106l1 into which the tip of the connecting portion 103 can be inserted. In the eighteenth sheet member 106l, the connecting portion 103 is disposed in the hole portion 106l1, and the periphery of the hole portion 106l1 and the connecting portion 103 are welded together by heat. Further, the eighteenth sheet member 106l is joined to the inner peripheral surface 5c of the snap ring 5 via the joining layer 75, and the seventeenth sheet member 106k is joined to the inner peripheral surface 5c of the snap ring 5 via the joining layer 75.

[0176] At least a part of the stretch cuff 74 configured as described above protrudes from the other end 5b of the snap ring 5 along the circumferential direction of the snap ring 5. Then, the protruding portion is configured to have a length such that, in a state where the blood pressure measuring device 1A is mounted on the wrist 200 having any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, a part thereof is disposed in the region of the sensing cuff 73 on the outer peripheral surface 5d of the snap ring 5.

[0177] For example, as Figure 16 and Figure 17 shown, the second outer layer 114 of the stretch cuff 74 is formed to be longer than the other layers of the stretch cuff 74, and in a state where the blood pressure measuring device 1A is mounted on the wrist 200 having any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, the second outer layer 114 is at least disposed in the region of the sensing cuff 73 on the outer peripheral surface 5d of the snap ring 5.

[0178] Specifically, the second outer layer 114 has a length such that, as Figure 14 shown, in a state where the device main body 3A is disposed on the back side of the wrist 200, the second outer layer 114 extends beyond the sensing cuff 73 and the radial artery 211 with respect to the wrist 200 having the assumed shortest circumference of the wrist 200 and extends to the side of the wrist 200. Further, the second outer layer 114 has a length such that, as Figure 18 shown, the second outer layer 114 also extends beyond the sensing cuff 73 and the radial artery 211 with respect to the wrist 200 having the assumed longest circumference of the wrist 200 and extends to the side of the wrist 200.

[0179] Regarding the blood pressure measuring device 1A configured as described above, as Figure 14As shown, in a state where the blood pressure measurement device 1A is worn on the wrist 200 at the assumed shortest circumference of the wrist 200, the sensing cuff 73 contacts the area where the radial artery 211 and the ulnar artery 212 of the wrist 200 are located, and a part of the second outer layer 114 of the stretching cuff 74 is disposed in the area of the sensing cuff 73 on the outer peripheral surface 5d of the retaining ring 5. If the pressure cuff 71 is inflated in this state, then by pressing the pressure cuff 71, the sensing cuff 73 is pressed against the wrist 200 side. If the stretching cuff 74 is inflated, then by the second outer layer 114 of the stretching cuff 74, the outer peripheral surface 5d of the retaining ring 5 is pressed, whereby the sensing cuff 73 is pressed against the wrist 200 side. In this way, the sensing cuff 73 is pressed by the pressure cuff 71 and the second outer layer 114 of the stretching cuff 74, whereby the pressing force for pressing the sensing cuff 73 against the wrist 200 can be increased, and thus the sensing cuff 73 closely adheres to the area where the radial artery 211 and the ulnar artery 212 of the wrist 200 are located.

[0180] In addition, as Figure 18 shown, in a state where the blood pressure measurement device 1A is worn on the wrist 200 at the assumed longest circumference of the wrist 200, the sensing cuff 73 contacts the area where the radial artery 211 of the wrist 200 is located, and a part of the second outer layer 114 of the stretching cuff 74 is disposed in the area of the sensing cuff 73 on the outer peripheral surface 5d of the retaining ring 5.

[0181] If the pressure cuff 71 is inflated in this state, then by pressing the pressure cuff 71, the sensing cuff 73 is pressed against the wrist 200 side. If the stretching cuff 74 is inflated, then by the second outer layer 114 of the stretching cuff 74, the outer peripheral surface 5d of the retaining ring 5 is pressed, whereby the sensing cuff 73 is pressed against the wrist 200 side. In this way, the sensing cuff 73 is pressed by the pressure cuff 71 and the second outer layer 114 of the stretching cuff 74, whereby the pressing force for pressing the sensing cuff 73 against the wrist 200 can be increased, and thus the sensing cuff 73 closely adheres to the area where the radial artery 211 of the wrist 200 is located.

[0182] It should be noted that for the case where the blood pressure measurement device 1A is worn on the wrist 200 with a relatively long circumference of the wrist 200, for example, in the case where the blood pressure measurement device 1A is worn on the wrist 200 at the assumed longest circumference of the wrist 200, as in Figure 18 showing the device main body 3 with a double-dot dash line, the position of the blood pressure measurement device 1A in the circumferential direction of the wrist 200 can also be adjusted. In this case, for example, the position of the blood pressure measurement device 1A in the circumferential direction of the wrist 200 can be adjusted such that the central portion in the circumferential direction of the sensing cuff 73 faces the radial artery 211.

[0183] The blood pressure measuring device 1A configured in this way includes a pressing cuff 71A as a cuff disposed between the sensing cuff 73 and the snap ring 5. When worn on the wrist 200, it includes a stretching cuff 74 as a cuff disposed in at least the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5. Therefore, the sensing cuff 73 can closely adhere to the area where the artery 210 of the wrist 200 is located.

[0184] Moreover, the second outer layer 114 of the stretching cuff 74 has the following length: when the blood pressure measuring device 1A is worn on the wrist 200 with any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, the second outer layer 114 of the stretching cuff 74 faces at least the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5.

[0185] Therefore, for the wrist 200 with any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, the sensing cuff 73 can be closely adhered to the area where the artery of the wrist 200 is located.

[0186] Moreover, in the configuration including the stretching cuff 74, the stretching cuff 74 is used as a cuff disposed in at least the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5, thereby preventing an increase in the number of parts of the blood pressure measuring device 1A.

[0187] As described above, according to the blood pressure measuring device 1A of the present embodiment, the sensing cuff can be closely adhered to the area where the artery of the wrist 200 is located.

[0188] Next, use Figures 19 to 21 , the blood pressure measuring device 1B of the third embodiment of the present invention will be described. It should be noted that for the same configurations as those in the first embodiment and the same configurations as those in the second embodiment, the same reference numerals as those in the first embodiment and the same reference numerals as those in the second embodiment are used, and the description is omitted.

[0189] Figure 19 It is an explanatory diagram showing the state of wearing the blood pressure measuring device 1B on the wrist 200. Figure 19 The shown wrist 200 is the wrist 200 with the shortest assumed circumference among the wrists 200 of multiple users set as the objects of use of the blood pressure measuring device 1B. Figure 19 The shown cuff structure body 6B is in an inflated state. Figure 20 It is a top view showing the state of the configuration of the cuff structure body 6B observed from the wrist 200 side. Figure 21 It is a top view showing the state of the configuration of the cuff structure body 6B observed from the inner peripheral surface 5c side of the snap ring 5.

[0190] As Figure 19As shown, the blood pressure measuring device 1B includes: a device main body 3, a belt 4, a snap ring 5, and a cuff structure 6B provided on the snap ring 5.

[0191] The snap ring 5 has the cuff structure 6B disposed on its inner peripheral surface. And the snap ring 5 holds the cuff structure 6B along the shape of the inner peripheral surface 5c of the snap ring 5. For example, the snap ring 5 fixes the cuff structure 6B through an adhesive layer 75 provided between the snap ring 5 and the cuff structure 6B, thereby holding the cuff structure 6B. In the present embodiment, the adhesive layer 75 is an adhesive or a double-sided tape.

[0192] The cuff structure 6B includes: a pressing cuff 71B, a back plate 72, a sensing cuff 73, and a stretching cuff 74B.

[0193] The pressing cuff 71B is different from the pressing cuff 71 of the first embodiment in that it has an insertion portion 71d for connecting the connecting portion 103 of the stretching cuff 74 to the flow path portion. The insertion portion 71d is configured as a region of the pressing cuff 71B that faces the connecting portion 103. The other configuration of the pressing cuff 71B is the same as that of the pressing cuff 71. The insertion portion 71d is configured, for example, such that a part of the edge of the pressing cuff 71B along the long dimension direction is recessed in the short dimension direction toward the edge portion along the other long dimension direction.

[0194] Compared with the configuration in which a part of the second outer layer 114 of the stretching cuff 74 of the second embodiment is disposed in the region where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5, the stretching cuff 74B is different in that the second outer layer 114 is formed to have the same length as the other layers. The other configuration of the stretching cuff 74B is the same as that of the stretching cuff 74 of the second embodiment.

[0195] Specifically, the length of the second outer layer 114 of the stretching cuff 74B along the circumferential direction of the snap ring 5 is the same as the length of the first outer layer 111 along the circumferential direction of the snap ring 5.

[0196] It should be noted that the pressing cuff 71B of the present embodiment has an insertion portion 71d for connecting the connecting portion 103 of the stretching cuff 74B to the flow path portion. The insertion portion 71d is configured as a region of the pressing cuff 71B that faces the connecting portion 103. The insertion portion 71d is configured, for example, such that a part of the edge of the pressing cuff 71B along the long dimension direction is recessed in the short dimension direction toward the edge portion along the other long dimension direction.

[0197] In this way, the cuff structure 6B also has a configuration that presses the pressure cuff 71B. Therefore, when the pressure cuff 71B expands, the sensing cuff 73 can be pressed toward the wrist 200 side by the pressure cuff 71B disposed between the retaining ring 5 and the sensing cuff 73. Further, by pressing the outer peripheral surface 5d of the retaining ring 5 with the pressure cuff 71B, the sensing cuff 73 can be pressed toward the wrist 200 side. Thus, the same effect as that of the first embodiment can be obtained.

[0198] Next, Figures 22 to 24 , the blood pressure measurement device 1C of the fourth embodiment will be described. Note that, for components having the same functions as those of the second embodiment and components having the same functions as those of the third embodiment, the same reference numerals as those of the second embodiment and the third embodiment are given, and the description thereof is omitted.

[0199] Figure 22 is an explanatory diagram showing a state where the blood pressure measurement device 1C is worn on the wrist 200. Figure 22 shows an example of a state where the blood pressure measurement device 1C is worn on the wrist 200 having the shortest assumed circumference among the wrists 200 of a plurality of users assumed to be the users of the blood pressure measurement device 1C. Figure 22 The cuff structure 6C shown is in an expanded state. Figure 23 is a plan view showing a state of observing the cuff structure 6C from the inner peripheral surface 5c side of the retaining ring 5.

[0200] Figure 24 is an explanatory diagram showing a state where the blood pressure measurement device 1C is worn on the wrist 200. Figure 24 shows an example of a state where the blood pressure measurement device 1C is worn on the wrist 200 having the longest assumed circumference among the wrists 200 of a plurality of users assumed to be the users of the blood pressure measurement device 1C. Figure 24 The cuff structure 6C shown is in an expanded state.

[0201] As Figure 22 shown, the blood pressure measurement device 1C includes: a device main body 3, a band 4, a retaining ring 5, and a cuff structure 6C provided on the retaining ring 5.

[0202] The retaining ring 5 has a cuff structure 6C disposed on its inner peripheral surface. Further, the retaining ring 5 holds the cuff structure 6C along the shape of the inner peripheral surface 5c of the retaining ring 5. For example, the retaining ring 5 fixes the cuff structure 6C by a bonding layer 75 provided between the retaining ring 5 and the cuff structure 6C, thereby holding the cuff structure 6C.

[0203] The cuff structure 6C includes: a pressing cuff 71A (first cuff), a back plate 72, a sensing cuff 73, a stretching cuff 74B, and a cuff 130 (second cuff). A part of the cuff 130 is disposed in the region of the sensing cuff 73 on the outer peripheral surface 5d of the snap ring 5.

[0204] As Figure 22 and Figure 23 shown, the cuff 130 is disposed on the opposite side of the sensing cuff 73 with respect to the stretching cuff 74B in the circumferential direction of the snap ring 5. A part of the cuff 130 is fixed to the inner peripheral surface 5c of the snap ring 5, for example, through an adhesive layer 75.

[0205] As Figure 22 shown, the cuff 130 is configured as a strip extending along the circumferential direction of the snap ring 5. The cuff 130 protrudes in the circumferential direction of the snap ring 5 from the other end 5b of the snap ring 5. The length of the cuff 130 is set to the following length: when the blood pressure measuring device 1C is worn on the wrist 200 with any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, a part of the cuff 130 is disposed in the region of the sensing cuff 73 on the outer peripheral surface 5d of the snap ring 5.

[0206] As Figure 23 shown, the cuff 130 includes, for example, an air bag 141, a flow path body 142 communicating with the air bag 141, and a connection portion 143 provided at the tip of the flow path body 142. In the cuff 130, one main surface of the air bag 141 is joined to the inner peripheral surface 5c of the snap ring 5 through an adhesive layer 75, for example. Such a cuff 130 is formed by welding two sheet members 146 together.

[0207] Here, the air bag 141 refers to a bag-shaped structure. In the present embodiment, the blood pressure measuring device 1C is configured to use air by a pump, so the air bag is used for description. However, in the case of using a fluid other than air, the bag-shaped structure may be a fluid bag that expands by the fluid.

[0208] The air bag 141 is configured as a rectangular shape that is long in one direction. The air bag 141 is formed, for example, by combining two sheet members 146 that are long in one direction, and as Figure 23 shown, welding the welded portion 141a into a rectangular frame shape that is long in one direction using heat.

[0209] The flow path body 142 is integrally provided with a part of one edge portion in the long dimension direction of the air bag 141. As a specific example, the flow path body 142 is provided at the end portion of the air bag 141 close to the device main body 3. Further, the flow path body 142 is formed in a shape that is long in one direction with a width smaller than the width in the short dimension direction of the air bag 91, and the top end is formed in a circular shape. The flow path body 142 has a connection portion 143 at the top end. The flow path body 142 is connected to the flow path portion via the connection portion 143, and constitutes a flow path between the flow path portion 15 and the air bag 141.

[0210] The flow path body 142 is formed by welding a part of the sheet member 146 adjacent to the region of the sheet member 146 constituting the air bag 141 in a state where the connection portion 143 is disposed between two sheet members 146 into a frame shape that is long in one direction by heat. It should be noted that the air bag 141 is configured such that a part of the welding portion 141a that welds the two sheet members 146 into a rectangular frame shape is not welded and is continuous with the welding portion 142a constituting the flow path body 142, thereby making the air bag 141 and the flow path body 142 fluidly continuous.

[0211] The connection portion 143 is, for example, a pipe joint. The connection portion 143 is provided at the top end of the flow path body 142. The connection portion 143 is connected to the flow path portion.

[0212] As Figure 22 and Figure 24 shown, for the blood pressure measuring device 1C configured as described above, in a state where the blood pressure measuring device 1C is worn on the wrist 200 having any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200, a part of the cuff 130 is disposed in at least the region of the outer peripheral surface 5d of the retaining ring 5 where the sensing cuff 73 is located. Moreover, the pressing cuff 71A is provided between the sensing cuff 73 and the retaining ring 5.

[0213] Then, by expanding the pressing cuff 71A disposed between the sensing cuff 73 and the retaining ring 5 and the cuff 130 disposed on the outer peripheral surface 5d of the retaining ring 5, the sensing cuff 73 is pressed against the wrist 200, thereby enabling the sensing cuff 73 to closely adhere to the region where the artery of the wrist 200 is located.

[0214] In this way, by pressing the sensing cuff 73 from both the inner peripheral surface 5c side and the outer peripheral surface side of the retaining ring 5, the pressing force for pressing the sensing cuff 73 against the wrist 200 can be increased, and thus the sensing cuff 73 can be closely adhered to the wrist 200.

[0215] It should be noted that for the case where the blood pressure measuring device 1C is worn on the wrist 200 having a relatively long circumference, for example, when the blood pressure measuring device 1C is worn on the wrist 200 having the assumed longest circumference of the wrist 200, as in Figure 24Likewise, the position of the blood pressure measurement device 1C in the circumferential direction of the wrist 200 can be adjusted, as indicated by the double-dashed line for the device main body 3. In this case, for example, the position of the blood pressure measurement device 1C in the circumferential direction of the wrist 200 can be adjusted such that the central portion in the circumferential direction of the sensing cuff 73 faces the radial artery 211.

[0216] Moreover, the sensing cuff 73 has a length along the retaining ring 5 such that the sensing cuff 73 contacts the area where the artery of the wrist 200 is located in a state where the blood pressure measurement device 1C is attached to the wrist 200 having any circumference from the assumed shortest circumference to the assumed longest circumference of the wrist 200. And the cuff 130 has a length such that the cuff 130 faces the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the retaining ring 5 with respect to the wrist 200 having any circumference from the assumed shortest to the assumed longest circumference.

[0217] Therefore, the sensing cuff 73 can be made to closely adhere to the area where the artery of the wrist 200 is located with respect to the wrist 200 having any length from the shortest to the longest circumference.

[0218] As described above, with the blood pressure measurement device 1C according to the present embodiment, the sensing cuff can be made to closely adhere to the area where the artery of the wrist 200 is located.

[0219] It should be noted that in the above example, among the blood pressure measurement devices 1, 1A, 1B, and 1C, an example is described in which one end 5a and the other end 5b of the retaining ring 5 are arranged on one side of the wrist 200, and the other end 5b is arranged on the back of the hand side and the one end 5a is arranged on the palm side, but it is not limited thereto.

[0220] In another example, the retaining ring 5 may have a length such that the cuff arranged in the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the retaining ring 5 is arranged on the inner peripheral surface. Regarding this modification, the configuration of an example applicable to the blood pressure measurement device 1 of the first embodiment will be described using Figure 25 and Figure 26 ,.

[0221] Figure 25 is an explanatory diagram showing the state where the blood pressure measurement device 1 is attached to the wrist 200. Figure 25 The shown wrist 200 is the wrist 200 having the assumed shortest circumference among the wrists 200 of multiple users set as the use object of the blood pressure measurement device 1. Figure 25 The shown cuff structure 6 is in an inflated state.

[0222] Figure 26 is an explanatory diagram showing the state where the blood pressure measurement device 1 is attached to the wrist 200. Figure 26The wrist 200 shown is the wrist 200 with the assumed longest circumference among the wrists 200 of multiple users who are assumed to be the objects of use of the blood pressure measuring device 1. Figure 26 The cuff structure 6 shown is in an inflated state.

[0223] As Figure 25 and Figure 26 As shown, the snap ring 5 has the following length: in the state where the blood pressure measuring device 1 is worn, the cuff in the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5 is arranged on the inner peripheral surface. That is, the snap ring 5 is configured such that one end 5a and the other end 5b are separated and one end 5a overlaps a part of another part of the snap ring 5.

[0224] The snap ring 5, for example, has the following length: the end on the other end 5b side is located in the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5, or at a position circumferentially beyond this area on the snap ring 5, and this end overlaps a part of another part of the snap ring 5 in the direction from the snap ring 5 towards the wrist 300. Moreover, the cuff arranged on the outer peripheral surface 5d of the snap ring 5 has a length that does not protrude from the snap ring 5.

[0225] According to the snap ring 5 configured in this way, in the state where the blood pressure measuring device 1 is worn on the wrist 200, the cuff 71 arranged in the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5 is also supported by the inner peripheral surface 5c of the outer snap ring 5. Therefore, the inflation direction of the cuff arranged in the area where the sensing cuff 73 is located on the outer peripheral surface 5d of the snap ring 5 is the direction towards the wrist 200 side. That is, the snap ring 5 can suppress the situation where the inflation direction of the pressing cuff 71 becomes a direction in which the pressing cuff 71 deviates from the inner peripheral surface of the snap ring 5. Therefore, the inflation of the pressing cuff 71 can be efficiently utilized as the pressing force for pressing the sensing cuff 73 against the wrist 200 side.

[0226] It should be noted that for the case of wearing a modified example of the blood pressure measuring device 1 on a wrist 200 with a longer circumference, for example, when wearing the blood pressure measuring device 1 on the wrist 200 with the assumed longest circumference, as shown by the double-dot dash line for the device main body 3 Figure 26 It is also possible to adjust the position of the blood pressure measuring device 1 in the circumferential direction of the wrist 200. In this case, for example, the position of the blood pressure measuring device 1 in the circumferential direction of the wrist 200 can be adjusted such that the central part in the circumferential direction of the sensing cuff 73 faces the radial artery 211.

[0227] Such a snap ring 5 can also be applied to the blood pressure measuring devices 1A, 1B, and 1C of the second to fourth embodiments.

[0228] In addition, in the above example, for the blood pressure measurement devices 1, 1A, 1B, and 1C, the configuration using the belt 4 as a fixing member is described as an example, but it is not limited thereto. In another example, the blood pressure measurement devices 1, 1A, 1B, and 1C may also be configured to be fixed to the wrist 200 by a belt-shaped strap having a hook-and-loop fastener on its surface. Regarding this modification, use Figure 27 To describe the configuration of an example applicable to the blood pressure measurement device 1 of the first embodiment.

[0229] Figure 27 FIG. is an explanatory diagram showing a state in which a modified example of the blood pressure measurement device 1 is worn on the wrist 200. Figure 27 The wrist 200 shown is the wrist 200 having the shortest assumed circumference among the wrists 200 of multiple users set as the usage object of the blood pressure measurement device 1. Figure 27 The cuff structure 6 shown is in an inflated state.

[0230] As Figure 27 shown, the modified example of the blood pressure measurement device 1 is different from the blood pressure measurement device 1 in that it has a strap 120 instead of the belt 4. Other configurations of the modified example of the blood pressure measurement device 1 are the same as those of the blood pressure measurement device 1.

[0231] The strap 120 is formed in a belt shape. A hook-and-loop fastener 121 is provided on one surface of the strap 120. Hooks are provided in a part of the hook-and-loop fastener 121, and loops are provided in another part of the hook-and-loop fastener 121. The hook-provided area and the loop-provided area of the hook-and-loop fastener 121 are formed so as to face each other by folding the strap 120 at a later-described folding portion 122 with respect to any wrist 200 having a circumference from the shortest assumed circumference to the longest assumed circumference of the wrist 200.

[0232] A folding portion 122 for folding the strap 120 is provided at a circumferentially symmetric position of the portion of the housing 11 where one end of the strap 120 is fixed. The folding portion 122 has, for example, a rod portion 123 extending in the width direction of the snap ring 5.

[0233] The strap 120 is inserted between the housing 11 and the rod portion 123 and folded at the rod portion 123. The folded strap 120 is fixed to a part of another part of the strap 120 by the hook-and-loop fastener 121.

[0234] The strap 120 configured in this way is also applicable to the blood pressure measurement devices 1A, 1B, and 1C of the second to fourth embodiments.

[0235] In addition, in the above example, for the sensing cuff 73, as an example of the size formed to be able to contact the area where the artery 210 of the wrist 200 is located, the length in the long dimension direction is set to the following length: with respect to the circumference of the wrist 200 being the assumed shortest circumference, the wrist 200 can contact the area where the radial artery 211 and the ulnar artery 212 are located, and can contact the area where either the radial artery 211 or the ulnar artery 212 of the wrist 200 with the assumed longest circumference of the wrist 200 is located. However, it is not limited to this.

[0236] In another example, as Figure 29 shown, the sensing cuff 73 may also be configured to have a length that can contact the area where the radial artery 211 and the ulnar artery 212 of the wrist 200 with the assumed longest circumference of the wrist 200 are located.

[0237] Figure 28 and Figure 29 show an example where this modified example is applicable to the blood pressure measuring device 1 of the first embodiment. Figure 28 and Figure 29 show an explanatory diagram of the state where the blood pressure measuring device 1 is worn on the wrist 200. Figure 28 shows an example of the state where the blood pressure measuring device 1 is worn on the wrist 200 with the assumed shortest circumference among the wrists 200 of a plurality of users assumed to be the users of the blood pressure measuring device 1. Figure 28 The cuff structure 6 shown is in an inflated state. Figure 29 shows an example of the state where the blood pressure measuring device 1 is worn on the wrist 200 with the assumed longest circumference among the wrists 200 of a plurality of users assumed to be the users of the blood pressure measuring device 1. Figure 29 The cuff structure 6 shown is in an inflated state.

[0238] As Figure 28 and Figure 29 shown, the sensing cuff 73 has a length that can contact the area where the radial artery 211 and the ulnar artery 212 of the wrist 200 with the assumed longest circumference are located. As Figure 28 shown, in the state where the blood pressure measuring device 1 is worn on the wrist 200 with the assumed shortest circumference, one end 73a of the sensing cuff 73 is disposed laterally of the wrist 200 across the ulnar artery 212, but the sensing cuff 73 contacts the area where the radial artery 211 and the ulnar artery 212 of the wrist 200 are located.

[0239] Note that, for the case where the modified example of the blood pressure measurement device 1 is worn on the wrist 200 with a relatively long circumference, for example, when the blood pressure measurement device 1 is worn on the wrist 200 with the assumed maximum circumference of the wrist 200, as shown in Figure 29 the device main body 3 is represented by a double-dashed line, the position of the blood pressure measurement device 1 in the circumferential direction of the wrist 200 can also be adjusted. In this case, for example, the position of the blood pressure measurement device 1 in the circumferential direction of the wrist 200 can be adjusted such that the central portion in the circumferential direction of the sensing cuff 73 faces the radial artery 211.

[0240] That is, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof at the implementation stage. In addition, the embodiments can be combined as appropriately as possible, and in this case, the combined effects can be obtained. Moreover, in the above-described embodiments, there are inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, in the case where a problem can be solved and an effect can be obtained even if several constituent elements are deleted from all the constituent elements shown in the embodiments, the configuration obtained by deleting the constituent elements can be extracted as an invention.

[0241] Explanation of Reference Numerals

[0242] 1…Blood pressure measurement device

[0243] 3…Device main body

[0244] 4…Band

[0245] 5…Snap ring

[0246] 6…Cuff structure

[0247] 11…Housing

[0248] 12…Display unit

[0249] 13…Operation unit

[0250] 31…Contour housing

[0251] 31a…Ear

[0252] 31b…Spring rod

[0253] 32…Windshield

[0254] 41…Button

[0255] 61…First band

[0256] 61a…Band portion

[0257] 61b…Fastener

[0258] 61e…Frame body

[0259] 61f…Snap tongue

[0260] 62…Second band

[0261] 62a…Small hole

[0262] 71…Pressing cuff

[0263] 72…Back plate

[0264] 72a…Groove

[0265] 73…Sensing cuff

[0266] 74…Stretching cuff

[0267] 81…Air bag

[0268] 84…Connecting part

[0269] 86…Sheet member

[0270] 86a…First sheet member

[0271] 86b…Second sheet member

[0272] 86b1…Opening

[0273] 86c…Third sheet member

[0274] 86c1…Opening

[0275] 86d…Fourth sheet member

[0276] 91…Air bag

[0277] 92…Flow path body

[0278] 93…Connecting part

[0279] 96…Sheet member

[0280] 96a…Fifth sheet member

[0281] 96b…Sixth sheet member

[0282] 101…Air bag

[0283] 103…Connecting part

[0284] 106…Sheet member

[0285] 106a…Seventh sheet member

[0286] 106b…Eighth sheet member

[0287] 106b1…Opening

[0288] 106c…The ninth sheet member

[0289] 106c1…Opening

[0290] 106d…The tenth sheet member

[0291] 106d1…Opening

[0292] 106e…The eleventh sheet member

[0293] 106e1…Opening

[0294] 106f…The twelfth sheet member

[0295] 106f1…Opening

[0296] 106g…The thirteenth sheet member

[0297] 106g1…Opening

[0298] 106h…The fourteenth sheet member

[0299] 106h1…Opening

[0300] 106i…The fifteenth sheet member

[0301] 106i1…Opening

[0302] 106j…The sixteenth sheet member

[0303] 106j1…Opening

[0304] 106k…The seventeenth sheet member

[0305] 106k1…Opening

[0306] 106l…The eighteenth sheet member

[0307] 120…Strap

[0308] 121…Hook-and-loop fastener

[0309] 122…Folded-back portion

[0310] 123…Rod portion

[0311] 130…Cuff

[0312] 200…Wrist

[0313] 210…Artery

[0314] 211…Radial artery

[0315] 212…Ulnar artery

Claims

1. A cuff structure, the cuff structure being provided on a retaining ring of a blood pressure measuring device, the blood pressure measuring device comprising: a device main body; and the retaining ring provided on the device main body and bent in imitation of the circumference of the wrist, the cuff structure comprising: A sensing cuff provided on the inner circumferential surface side of the retaining ring and in contact with the area where the artery of the wrist is located; and A cuff, a part of which is provided between the retaining ring and the sensing cuff, and a part of the other part is disposed in the area of the sensing cuff on the outer circumferential surface of the retaining ring in a state where the blood pressure measuring device is worn on the wrist, and presses the sensing cuff against the wrist by expansion, Both ends of the retaining ring are separated, A part of the other part of the cuff is configured in a shape that protrudes in the circumferential direction of the retaining ring beyond one end of the retaining ring.

2. The cuff structure according to claim 1, wherein, The cuff has a length such that in a state of being worn on the wrist with any circumference from the assumed shortest circumference to the longest circumference of the wrist, a part of the other part is disposed in the area of the sensing cuff on the outer circumferential surface of the retaining ring.

3. The cuff structure according to claim 1, wherein: The cuff is configured in a shape extending from the part to a part of the other part.

4. The cuff structure according to claim 1, wherein: The cuff includes a first cuff provided between the retaining ring and the sensing cuff and a second cuff provided on the back of the hand of the wrist of the retaining ring, In a state where the blood pressure measuring device is worn on the wrist, a part of the second cuff is disposed in the area of the sensing cuff on the outer circumferential surface of the retaining ring.

5. A blood pressure measuring device, the blood pressure measuring device comprising: A device main body; A retaining ring provided on the device main body and bent in imitation of the circumference of the wrist; A sensing cuff provided on the inner circumferential surface side of the retaining ring and in contact with the area where the artery of the wrist is located; and A cuff, a part of which is provided between the retaining ring and the sensing cuff, and a part of the other part of the cuff is disposed in the area of the sensing cuff on the outer circumferential surface of the retaining ring in a state where the retaining ring, the sensing cuff, and the cuff are worn on the wrist, and presses the sensing cuff against the wrist by expansion, Both ends of the retaining ring are separated, A part of the other part of the cuff is configured in a shape that protrudes in the circumferential direction of the retaining ring beyond one end of the retaining ring.

6. The blood pressure measuring device according to claim 5, wherein, The cuff has a length such that in a state where the retaining ring, the sensing cuff, and the cuff are worn on the wrist with any circumference from the assumed shortest circumference to the longest circumference of the wrist, a part of the other part is disposed in the area of the sensing cuff on the outer circumferential surface of the retaining ring.

7. The blood pressure measuring device according to claim 5, wherein: The cuff is configured in a shape extending from the part to a part of the other part.

8. The blood pressure measuring device according to claim 5, Wherein: The cuff includes a first cuff disposed between the card ring and the sensing cuff, and a second cuff disposed on the back of the wrist of the card ring. In a state where the card ring, the sensing cuff, the first cuff, and the second cuff are worn on the wrist, a part of the second cuff is disposed in a region of the outer peripheral surface of the card ring where the sensing cuff is located.

9. The blood pressure measuring device according to claim 5, wherein, In the card ring, one end overlaps a part of another part of the card ring.

Images