JP3174765U - Sphygmomanometer cuff - Google Patents

Abstract

A sphygmomanometer cuff capable of improving blood pressure measurement accuracy is provided.
A sphygmomanometer cuff is provided on an outer cover 110 wound around an upper arm of a subject and on one end side of the outer cover 110 in a longitudinal direction, and the cuff for the blood pressure monitor is elongated when the outer cover 110 is wound around the upper arm of the subject. A ring 160 through which the other end of the exterior cover 110 in the direction is inserted. Further, on the outer surface of the exterior cover 110, a belt-like shape is provided from the other end side to the one end side of the exterior cover 110. The other end side of the exterior cover 110 is inserted through the ring 160 and folded back from the ring 160. The surface fastener is fixed to the portion of the outer cover 110 wound around the upper arm of the subject, and a grip portion that covers the surface of the ring 160 is provided as friction increasing means for increasing friction with the surface fastener. .
[Selection] Figure 1

Description

  The present invention generally relates to a sphygmomanometer cuff, and more particularly to a sphygmomanometer cuff that is a component of a sphygmomanometer and is attached to a measurement site of a subject during blood pressure measurement.

  Regarding a conventional sphygmomanometer cuff, for example, Japanese Patent Application Laid-Open No. 2010-252836 discloses a living body compression device and a blood pressure measurement device for the purpose of significantly improving wearability on a living body (Patent Document). 1). Japanese Patent Application Laid-Open No. 2007-275483 discloses a sphygmomanometer cuff for the purpose of facilitating mounting work on the upper arm (Patent Document 2).

  Generally, the exterior body of the sphygmomanometer cuff is provided with a fixing means for maintaining the state in which the cuff is wound around the measurement site of the subject. As disclosed in Patent Documents 1 and 2, a structure that uses a hook-and-loop fastener made of a loop fastener and a hook fastener is known as such a fixing means.

  The structure will be described in the light of the biological compression device disclosed in Patent Document 1. The biological compression device disclosed in Patent Document 1 is used as an arm band (cuff) for an automatic blood pressure monitor. The cuff includes a belt-like body (exterior body) that houses the fluid bag. A fastener made of round steel formed in an oval shape is provided at one end in the longitudinal direction of the strip. The cuff further includes a hook-and-loop fastener as a fixing means for fixing the other end of the band-like body inserted into the fastener and folded back via the fastener. The hook and loop fastener includes a loop sheet and a hook sheet. The outer cover of the belt-like body is formed from a loop sheet. The hook sheet is stitched to the other end side of the loop sheet.

JP 2010-252836 A JP 2007-275483 A

  In the cuff disclosed in Patent Document 1, the belt-like body wound around the upper arm of the subject is folded by the fastener and pulled in the direction of tightening the upper arm when the cuff is disclosed. And the state by which the cuff was wound around the test subject's upper arm is obtained by joining the hook sheet | seat provided in the other end side of the strip | belt-shaped body to the loop sheet | seat provided as the outer surface cover of a strip | belt-shaped body.

  However, when the fluid is supplied to and discharged from the fluid bag in the cuff attached in this way, the band-like body portion located on the inner circumferential side and the belt-like body portion located on the outer circumferential side with the clasp as a boundary. In some cases, the tension acting on the belt-like body may vary. In this case, there is a concern that the belt-like body causes a shift between the inner peripheral portion and the outer peripheral portion. As a result, this becomes a vibration and propagates to the internal pressure of the fluid bag, and becomes a noise and is superimposed on the measurement result, thereby hindering a highly accurate measurement.

  Accordingly, an object of the present invention is to solve the above-described problems and to provide a sphygmomanometer cuff that improves the measurement accuracy of blood pressure values.

  A sphygmomanometer cuff according to the present invention includes an exterior body, a fluid bag accommodated in the exterior body and supplied with fluid, a ring member, a hook-and-loop fastener, and friction increasing means. An exterior body has the external appearance extended in strip | belt shape, and is wound around a to-be-measured site | part of a test subject so that it may curve along the longitudinal direction extended in the strip | belt shape. The ring member is provided on one end side of the exterior body in the longitudinal direction. The ring member is inserted through the other end side of the exterior body in the longitudinal direction when the exterior body is wound around the measurement site of the subject. The surface fastener is provided on the outer surface of the exterior body in a band shape from the other end side to the one end side of the exterior body. The hook-and-loop fastener is for fixing the portion on the other end side of the outer package that is inserted through the ring member and folded back from the ring member to the portion of the outer package that is wound around the measurement site of the subject. . The friction increasing means is provided on the ring member and increases the friction with the surface fastener.

  According to the sphygmomanometer cuff configured as described above, the hook-and-loop fastener is folded together with the outer body by the ring member. At this time, the friction between the exterior body and the ring member can be positively increased by providing the ring member with friction increasing means. Thereby, the shift | offset | difference of the exterior body at the time of blood-pressure measurement can be prevented, and the measurement precision of a blood-pressure value can be improved.

  Preferably, the friction increasing means is a coating layer covering the surface of the ring member. The covering layer is formed of a material having a friction coefficient with respect to the surface fastener that is larger than the friction coefficient between the ring member and the surface fastener.

  According to the sphygmomanometer cuff configured as described above, the covering layer covering the ring member and the hook-and-loop fastener are in contact with each other at the position where the exterior body is folded back by the ring member. At this time, since the coating layer is formed of a material whose friction coefficient with respect to the surface fastener is larger than the friction coefficient between the ring member and the surface fastener, the friction between the exterior body and the ring member is positively increased. be able to. Thereby, the shift | offset | difference of the exterior body at the time of blood-pressure measurement can be prevented, and the measurement precision of a blood-pressure value can be improved.

  Preferably, as a friction increasing means, a concavo-convex shape is formed on the surface of the ring member.

  According to the sphygmomanometer cuff configured as described above, the surface of the ring member and the hook-and-loop fastener are in contact with each other at the position where the exterior body is folded back by the ring member. Under the present circumstances, the friction between an exterior body and a ring member can be increased actively by forming the surface of the ring member in an uneven shape. Thereby, the shift | offset | difference of the exterior body at the time of blood-pressure measurement can be prevented, and the measurement precision of a blood-pressure value can be improved.

  Preferably, the surface fastener includes a first engagement portion provided on the other end side of the exterior body, and a first engagement that extends in a band shape from the other end side to the one end side of the exterior body and is in pressure contact with the first engagement portion. A second engaging portion that engages with the portion. The second engagement portion is disposed at a position where the ring member is folded back when the exterior body is wound around the measurement site. The friction increasing means is provided so as to increase the friction with the second engaging portion.

  According to the sphygmomanometer cuff configured in this manner, the second engagement portion of the hook and loop fastener is disposed at a position where it is folded back by the ring member, so that the friction increasing means increases the friction with the second engagement portion. It is provided as follows.

  As described above, according to the present invention, a sphygmomanometer cuff with improved blood pressure measurement accuracy can be provided.

It is a perspective view which shows the blood pressure meter provided with the cuff for blood pressure monitors in embodiment of this invention. FIG. 2 is a development view when the sphygmomanometer cuff in FIG. 1 is viewed from the outer surface side. It is sectional drawing which shows the cuff for blood pressure monitors along the III-III line | wire in FIG. It is sectional drawing which shows the mounting state of the cuff for blood pressure monitors in FIG. It is sectional drawing which shows the ring provided in the exterior cover in FIG. It is a figure which shows the structure of the functional block of the sphygmomanometer in FIG. It is a figure which shows the flow of measurement operation | movement of the blood pressure meter in FIG. It is sectional drawing which shows the 1st modification of the ring provided in the exterior cover in FIG. It is sectional drawing which shows the 2nd modification of the ring provided in the exterior cover in FIG.

  Embodiments of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are denoted by the same reference numerals.

  FIG. 1 is a perspective view showing a sphygmomanometer having a sphygmomanometer cuff according to an embodiment of the present invention. Referring to FIG. 1, sphygmomanometer 1 includes a main body 10, a sphygmomanometer cuff 100 </ b> A, and an air tube 40. The air tube 40 connects the main body 10 configured separately and the sphygmomanometer cuff 100A. The air tube 40 is composed of, for example, a flexible resin tube.

  The main body 10 has a box-shaped casing 11. A display unit 21 and an operation unit 23 are provided on the upper surface of the casing 11. The main body 10 is used by being placed on a placement surface such as a table during measurement. The sphygmomanometer cuff 100 </ b> A has a belt-like shape that can be wound around the upper arm as a measurement site. The sphygmomanometer cuff 100A is attached to the upper arm during measurement. The sphygmomanometer cuff 100 </ b> A takes an annular shape when worn around the upper arm.

  FIG. 2 is a development view of the sphygmomanometer cuff in FIG. 1 as viewed from the outer surface side. FIG. 3 is a cross-sectional view showing the sphygmomanometer cuff along the line III-III in FIG.

  Referring to FIGS. 1 to 3, sphygmomanometer cuff 100 </ b> A includes exterior cover 110, air bag 150, ring 160, and hook-and-loop fastener 145 as main components.

  The exterior cover 110 has a substantially rectangular plan view. The exterior cover 110 extends in a band shape between one end side and the other end side in FIG. That is, the direction connecting the one end side and the other end side in FIG. 2 is the longitudinal direction of the exterior cover 110. The outer cover 110 is wound around the upper arm so as to bend along the longitudinal direction of the outer cover 110 when the sphygmomanometer cuff 100A is attached.

  The exterior cover 110 has an inner surface 110a and an outer surface 110b. The inner surface 110a is disposed on the inner peripheral side in a state where the sphygmomanometer cuff 100A is wound around the upper arm of the subject, and comes into contact with the upper arm of the subject. The outer surface 110b is located on the outer peripheral side in a state where the sphygmomanometer cuff 100A is wound around the upper arm of the subject. The outer surface 110b is disposed on the back side of the inner surface 110a.

  The exterior cover 110 includes an outer cover member 120, an inner cover member 130, and a bias tape 140.

  The outer cover member 120 is disposed on the outer peripheral side in a state where the sphygmomanometer cuff 100A is wound around the upper arm of the subject. The outer surface 110 b is formed on the outer cover member 120. The inner cover member 130 is disposed on the inner peripheral side in a state where the sphygmomanometer cuff 100A is wound around the upper arm of the subject. The inner surface 110 a is formed on the inner cover member 130. The outer cover member 120 and the inner cover member 130 are overlapped and joined together (for example, stitching, welding, etc.) with their peripheral edges covered with the bias tape 140, whereby the outer cover 110 is formed in a bag shape. ing.

  As the outer cover member 120, a member that is less stretchable than the inner cover member 130 is used in order to prevent the air bag 150 from expanding radially outward on the circumference of the upper arm of the subject. Yes. On the other hand, as the inner cover member 130, a member sufficiently rich in elasticity is suitably used so that the compression force applied to the upper arm by the expansion of the air bag 150 is not hindered by the inner cover member 130. From such a viewpoint, as the exterior cover 110, a cloth made of synthetic fibers such as polyamide and polyester that can adjust the size of stretchability relatively easily is used.

  An air bag 150 is accommodated in the space inside the exterior cover 110 defined by the outer cover member 120 and the inner cover member 130. The air bag 150 has a substantially rectangular plan view. The air bag 150 is included in the exterior cover 110 so that the longitudinal direction thereof is disposed along the longitudinal direction of the sphygmomanometer cuff 100A. The air bag 150 is disposed so as to be biased toward one end of the exterior cover 110 in the longitudinal direction (see FIG. 2). The air bag 150 is preferably composed of a bag-like member formed using a resin sheet, and has an expansion / contraction space therein.

  A nipple 151 is attached to the air bag 150. The nipple 151 is attached to the outer surface of the air bag 150 that is positioned on the outer peripheral side in a state where the sphygmomanometer cuff 100A is wound around the upper arm of the subject. The nipple 151 passes through the outer cover member 120 and is drawn to the outside of the exterior cover 110. An air tube 40 is connected to the nipple 151. Thereby, the air bag 150 is expanded by supplying air to the expansion / contraction space through the air tube 40, and the air bag 150 is contracted by discharging air from the expansion / contraction space through the air tube 40.

  Any material can be used as the material of the resin sheet constituting the air bag 150 as long as it is rich in elasticity and does not leak from the above-described expansion / contraction space. From such a viewpoint, suitable materials for the resin sheet include ethylene-vinyl acetate copolymer, soft vinyl chloride, polyurethane, polyamide, and the like.

  FIG. 4 is a cross-sectional view showing a state in which the sphygmomanometer cuff in FIG. 1 is attached. With reference to FIGS. 1 to 4, a ring 160 is provided on one end side in the longitudinal direction of the exterior cover 110.

  More specifically, the ring 160 is attached to the outer cover member 120 (outer surface 110 b) of the outer cover 110 using a ring fixing cloth 143. The ring fixing cloth 143 is wound so as to cover a part of the ring 160, and a part of the ring fixing cloth 143 is joined to the outer cover member 120 (for example, stitching or welding), whereby the ring 160 is attached to the exterior cover 110. It is fixed to.

  The ring 160 is made of nickel plated round steel. The ring 160 has a ring-shaped appearance. The ring 160 has an oval shape having a major axis and a minor axis. The direction in which the minor axis extends coincides with the longitudinal direction of the exterior cover 110, and the direction in which the major axis extends and the lateral direction of the exterior cover 110 are defined. Are provided to match. The ring 160 may have an incomplete ring shape interrupted in the circumferential direction. In this case, the ring 160 is provided such that the interrupted portion is covered with the ring fixing cloth 143.

  The ring 160 functions as an auxiliary tool when the sphygmomanometer cuff 100A is wrapped around the upper arm. When the outer cover 110 is wound around the upper arm of the subject, the other end side of the outer cover 110 is inserted into the ring 160 and further folded back with the ring 160 as a base point.

  The hook-and-loop fastener 145 is a fastener (fastener) that is detachable in a plane. The hook-and-loop fastener 145 is provided as a fixing means for maintaining the state in which the sphygmomanometer cuff 100A is wound around the upper arm by fixing the exterior cover 110 wound around the upper arm. The surface fastener 145 is provided on the outer cover member 120 (outer surface 110 b) of the outer cover 110. The surface fastener 145 generally has a shape extending in a band shape from one end side to the other end side of the exterior cover 110.

  The specific structure of the hook-and-loop fastener 145 will be described. The hook-and-loop fastener 145 includes a hook fastener 142 as a first engagement portion and a loop fastener 141 as a second engagement portion. The hook fastener 142 is provided with a fine hook structure, and the loop fastener 141 is provided with a fine loop structure. The hook fastener 142 and the loop fastener 141 are brought into pressure contact with each other, and the hook structure provided on the hook fastener 142 is hooked on the loop structure provided on the loop fastener 141, so that the hook fastener 142 and the loop fastener 141 are joined in a plane. The

  Each of the loop fastener 141 and the hook fastener 142 has a substantially rectangular plan view. The loop fastener 141 and the hook fastener 142 are provided side by side along the longitudinal direction of the exterior cover 110. The hook fastener 142 is provided on the other end side of the exterior cover 110. The hook fastener 142 is provided at an end portion opposite to the end portion where the ring 160 is provided in the longitudinal direction of the exterior cover 110.

  The loop fastener 141 extends in a band shape from the other end side of the exterior cover 110 toward the one end side. The loop fastener 141 extends in a band shape between a position adjacent to the hook fastener 142 on the other end side of the outer cover 110 and a position adjacent to the ring 160 on one end side of the outer cover 110. The length of the loop fastener 141 in the longitudinal direction of the exterior cover 110 is larger than the length of the hook fastener 142 in the longitudinal direction of the exterior cover 110.

  In the present embodiment, the case where the loop fastener 141 provided separately from the exterior cover 110 is joined to the outer cover member 120 of the exterior cover 110 has been described. However, the present invention is not limited to this. The outer cover member 110 may be formed by a loop fastener.

  Referring to FIG. 4, loop fastener 141 and hook fastener 142 face each other by inserting the other end side of exterior cover 110 into ring 160 and folding back ring 160 as a base point. Therefore, in this state, by joining the loop fastener 141 and the hook fastener 142 to each other, the annular shape of the sphygmomanometer cuff 100A is maintained and the sphygmomanometer cuff 100A is fixed to the upper arm. Become.

  At this time, since the loop fastener 141 has a shape extending in a band shape in the longitudinal direction of the exterior cover 110, the subject joins the hook fastener 142 to any position of the loop fastener 141 regardless of the circumference of the upper arm. can do. As an example, a subject's arm circumference to which the sphygmomanometer cuff 100A is applied is in a range of 22 cm to 42 cm.

  In the mounted state of the sphygmomanometer cuff 100 </ b> A shown in FIG. 4, the exterior cover 110 has an inner peripheral portion 111 and an outer peripheral portion 112. The inner peripheral portion 111 is defined between one end side of the outer cover 110 and the ring 160, and is wound around the upper arm of the subject to form an annular shape. The outer peripheral side portion 112 is defined between the ring 160 and the other end side of the exterior cover 110, and overlaps the outer surface 110 b of the inner peripheral side portion 111. The region in which the loop fastener 141 is provided extends from the inner peripheral portion 111 to a part of the outer peripheral portion 112, and the region in which the hook fastener 142 is provided is included in the outer peripheral portion 112. With such a configuration, the loop fastener 141 is folded back by the ring 160 together with the exterior cover 110.

  Note that the hook fastener may be provided in a range where the loop fastener 141 is provided, and the loop fastener may be provided in a range where the hook fastener 142 is provided.

  FIG. 5 is a cross-sectional view showing a ring provided on the exterior cover in FIG. 1. Referring to FIG. 5, sphygmomanometer cuff 100 </ b> A according to the present embodiment further includes grip portion 52 as friction increasing means for increasing the friction with surface fastener 145. The grip part 52 is provided so as to cover the surface of the ring 51.

  The grip portion 52 is provided so as to cover the entire surface of the ring 51. The grip portion 52 is provided on the surface of the ring 51 so as to cover a range assumed to contact the loop fastener 141 when the sphygmomanometer cuff 100A is mounted, for example, a range exposed from the ring fixing cloth 143 in FIG. Also good.

  The grip portion 52 is formed of a material having a friction coefficient with respect to the surface fastener 145 larger than the friction coefficient between the ring 51 and the surface fastener 145. More specifically, the grip portion 52 is formed of a material whose friction coefficient with respect to the loop fastener 141 is larger than the friction coefficient between the ring 51 and the loop fastener 141. The grip 52 is made of a material that has a larger coefficient of friction with the loop fastener 141 than the material that forms the ring 51.

  The friction coefficient to be compared here is a friction coefficient obtained with the contact conditions being equal. That is, the surface roughness, cleanliness, temperature, and humidity of the contact surface are made equal, and the friction coefficients obtained in that case are compared. The friction coefficient to be compared may be a dynamic friction coefficient or a static friction coefficient.

  In the present embodiment, the grip portion 61 is made of soft vinyl chloride or ethylene propylene rubber. Such a grip part 61 is provided on the surface of the ring 51 by insert molding, for example.

  Next, the functional block configuration of the sphygmomanometer 1 in FIG. 1 will be described. FIG. 6 is a diagram showing a functional block configuration of the sphygmomanometer in FIG.

  Referring to FIG. 6, main body 10 includes control unit 20, memory unit 22, power supply unit 24, pressurization pump 31, exhaust valve 32, pressure, in addition to display unit 21 and operation unit 23 described above. It has a sensor 33, a pressure pump drive circuit 34, an exhaust valve drive circuit 35, and an oscillation circuit 36. The pressurization pump 31, the exhaust valve 32, and the pressure sensor 33 correspond to the air system component 30 provided in the sphygmomanometer 1, and are connected to the air bag 150 through the air pipe 40 described above. Among these, the pressurization pump 31 and the exhaust valve 32 correspond to a pressure increasing / decreasing mechanism for increasing / decreasing the pressure of the air bag 150.

  The control unit 20 is configured by, for example, a CPU (Central Processing Unit) and is means for controlling the entire sphygmomanometer 1. The memory unit 22 is configured by, for example, a ROM (Read-Only Memory) or a RAM (Random-Access Memory), and stores a program for causing the control unit 20 or the like to execute a processing procedure for blood pressure measurement. This is a means for storing measurement results and the like.

  The display unit 21 is configured by, for example, an LCD (Liquid Crystal Display) and is a means for displaying measurement results and the like. The operation unit 23 is a means for accepting an operation by a user or the like and inputting a command from the outside to the control unit 20 or the power supply unit 24. The power supply unit 24 is means for supplying power to the control unit 20.

  The control unit 20 inputs control signals for driving the pressurization pump 31 and the exhaust valve 32 to the pressurization pump drive circuit 34 and the exhaust valve drive circuit 35, respectively, and the blood pressure value as a measurement result is stored in the memory unit 22 or Input to the display unit 21. The control unit 20 also includes a blood pressure information acquisition unit (not shown) that acquires the blood pressure value of the subject based on the pressure value detected by the pressure sensor 33, and the blood pressure value acquired by the blood pressure information acquisition unit. Is input to the memory unit 22 and the display unit 21 described above as measurement results.

  The sphygmomanometer 1 may further include an output unit that outputs a blood pressure value as a measurement result to an external device (for example, a PC (Personal Computer), a printer, or the like). As the output unit, for example, a serial communication line, a writing device for various recording media, or the like can be used.

  The pressurization pump drive circuit 34 controls the operation of the pressurization pump 31 based on the control signal input from the control unit 20. The pressurizing pump 31 is for pressurizing the internal pressure (hereinafter also referred to as “cuff pressure”) of the air bladder 150 by supplying air to the expansion / contraction space of the air bladder 150, and its operation is the above-described operation. It is controlled by the pressure pump drive circuit 34.

  The exhaust valve drive circuit 35 controls the opening / closing operation of the exhaust valve 32 based on the control signal input from the control unit 20. The exhaust valve 32 is for maintaining the internal pressure of the air bag 150 or opening the expansion / contraction space of the air bag 150 to reduce the cuff pressure. The operation of the exhaust valve 32 is described above. 35.

  The pressure sensor 33 is a capacitance type sensor, and its capacitance changes according to the internal pressure of the air bag 150. The oscillation circuit 36 generates a signal having an oscillation frequency corresponding to the capacitance of the pressure sensor 33 and inputs the generated signal to the control unit 20.

  FIG. 7 is a diagram showing a flow of measurement operation of the sphygmomanometer in FIG. Next, with reference to FIG. 7, the flow of the measurement operation of the sphygmomanometer 1 in the present embodiment will be described. Note that the program according to the flowchart shown in FIG. 7 is stored in advance in the memory unit 22 described above, and the process is executed when the control unit 20 reads the program from the memory unit 22 and executes it. .

  When measuring the blood pressure value, the sphygmomanometer cuff 100A is wound around the subject's upper arm and worn in advance. In this state, when the operation unit 23 provided in the main body 10 is operated and the power supply of the sphygmomanometer 1 is turned on, power is supplied from the power supply unit 24 to the control unit 20 and the control unit 20 is driven. . As shown in FIG. 7, the controller 20 first initializes the sphygmomanometer 1 after the drive (step S1).

  Next, the control unit 20 waits for a measurement start instruction. When the operation unit 23 is operated and a measurement start instruction is input, the control unit 20 closes the exhaust valve 32 and starts to drive the pressurization pump 31. The cuff pressure of the bag 150 is gradually increased (step S2).

  In the process of pressurizing the air bag 150, the control unit 20 calculates the systolic blood pressure and the systolic blood pressure by a known procedure (step S3). Specifically, the control unit 20 acquires the cuff pressure from the oscillation frequency obtained from the oscillation circuit 36 in the process of increasing the cuff pressure of the air bladder 150, and extracts pulse wave information superimposed on the acquired cuff pressure. Then, the control unit 20 calculates the blood pressure value based on the extracted pulse wave information.

  When the blood pressure value is calculated in step S3, the control unit 20 completely exhausts the air in the air bag 150 by stopping the driving of the pressurizing pump 31 and opening the exhaust valve 32 (step S4). While displaying the blood pressure value as a measurement result on the display part 21, the said blood pressure value is stored in the memory part 22 (step S5).

  Thereafter, the control unit 20 waits for a power-off command and ends the operation. The measurement method described above is based on a so-called pressurization measurement method that detects a pulse wave when the air bag 150 is pressurized. However, a so-called decompression measurement method that detects a pulse wave when the air bag 150 is depressurized. Of course, it is also possible to adopt.

  Then, the effect produced by 100 A of blood pressure meter cuffs in this Embodiment is demonstrated.

  As described with reference to FIG. 4, in the sphygmomanometer cuff 100 </ b> A according to the present embodiment, the outer end portion (outer peripheral portion 112) of the outer cover 110 is wound around the upper arm of the subject. A state where the cover 110 is overlapped with the portion (inner peripheral side portion 111) is taken. In the cuff employing such a mounting method, when the supply of air to the air bag 150 is started in step S <b> 2, the cuff acts on the exterior cover 110 between the inner peripheral portion 111 and the outer peripheral portion 112. There may be a difference in the tension to be applied (in FIG. 4, F1> F2 or F1 <F2). In this case, as the air bag 150 expands, the inner peripheral side portion 111 of the outer cover 110 is slightly pulled out to the other end side, or the outer peripheral side portion 112 of the outer cover 110 is slightly pulled into one end side. There are concerns. When the overall length of the exterior cover 110 is set to be larger so as to correspond to a wide arm circumference, there are more cases in which the overlap between the inner peripheral side portion 111 and the outer peripheral side portion 112 becomes longer.

  On the other hand, in the present embodiment, the surface of the ring 51 that comes into contact with the loop fastener 141 at the folding position of the exterior cover 110 is covered with the grip portion 52 formed of a material having a high friction coefficient. With such a configuration, friction between the loop fastener 141 and the ring 160 can be positively increased, and displacement of the outer cover 110 during blood pressure measurement can be prevented.

  FIG. 8 is a cross-sectional view showing a first modification of the ring provided on the exterior cover in FIG. FIG. 9 is a cross-sectional view showing a second modification of the ring provided on the exterior cover in FIG. With reference to FIG. 8 and FIG. 9, in these modifications, an uneven shape is formed on the surface of the ring 51 as a friction increasing means for increasing the friction with the surface fastener 145.

  In the modification shown in FIG. 8, the surface of the ring 51 is knurled. As a result, a jagged pattern 56 formed by regularly arranging fine pyramids is formed on the surface of the ring 51.

  In the modification in FIG. 9, a plurality of grooves 57 are formed on the surface of the ring 51. The groove 57 extends in a direction intersecting the circumferential direction of the outer peripheral surface of the ring 51. In this modification, the groove 57 extends in parallel to the direction in which the ring 51 extends in the shape of a shaft. The plurality of grooves 57 are provided side by side in the circumferential direction of the outer peripheral surface of the ring 51.

  Also according to these modified examples, the friction between the loop fastener 141 and the ring 160 can be positively increased, and displacement of the outer cover 110 during blood pressure measurement can be prevented.

  The structure of the sphygmomanometer cuff according to the embodiment of the present invention described above will be described together. The sphygmomanometer cuff 100A according to the present embodiment has an appearance extending in a strip shape, and extends in the strip shape. An exterior cover 110 as an exterior body that is wound around the upper arm as a measurement site of a subject so as to bend along the existing longitudinal direction, and a fluid bag that is housed in the exterior cover 110 and is supplied with air as a fluid An air bag 150, a ring 160 provided on one end side of the exterior cover 110 in the longitudinal direction, and inserted through the other end side of the exterior cover 110 in the longitudinal direction when the exterior cover 110 is wound around the upper arm of the subject; The belt is provided on the outer surface 110b of the outer cover 110 in a band shape from the other end side to the one end side of the outer cover 110, and is inserted into the ring 160. The surface fastener 145 for fixing the other end side portion of the exterior cover 110 folded around the ring 160 to the portion of the exterior cover 110 wound around the upper arm of the subject, and the ring 160 are provided. The grip part 52 (the jagged pattern 56, the some groove | channel 57) as a friction increase means to increase the friction with the fastener 145 is provided.

  According to the sphygmomanometer cuff 100A according to the embodiment of the present invention configured as described above, the grip portion 52 formed of a material having a high friction coefficient is provided on the surface of the ring 51, or the surface of the ring 51 is provided. By forming the concavo-convex shape, it is possible to prevent the outer cover 110 from being displaced during blood pressure measurement. Thereby, the pressure fluctuation in the air bag 150 resulting from the shift | offset | difference of the exterior cover 110 can be suppressed, and the measurement precision of a blood pressure value can be improved.

  In the present embodiment, the case where the present invention is applied to a cuff for a sphygmomanometer in which the upper arm is employed as a measurement site has been described. However, the present invention is a sphygmomanometer in which a wrist or an ankle is employed as the measurement site. It can also be applied to cuffs. In the present embodiment, the case where the present invention is applied to the sphygmomanometer cuff provided in the sphygmomanometer capable of measuring the maximum blood pressure and the minimum blood pressure has been described. However, blood pressure information other than the maximum blood pressure and the minimum blood pressure is described. The present invention can also be applied to a sphygmomanometer cuff provided in a sphygmomanometer capable of measuring (for example, average blood pressure value, pulse wave, pulse, AI (Augmentation Index) value, etc.).

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is indicated not by the above description but by the scope of the utility model registration request, and is intended to include all modifications within the meaning and scope equivalent to the scope of the utility model registration request.

  This device is applied to a sphygmomanometer for measuring a blood pressure value of a subject.

  DESCRIPTION OF SYMBOLS 1 Blood pressure monitor, 10 main body, 11 casing, 20 control part, 21 display part, 22 memory part, 23 operation part, 24 power supply part, 30 air system component, 31 pressurization pump, 32 exhaust valve, 33 pressure sensor, 34 addition Pressure pump drive circuit, 35 Exhaust valve drive circuit, 36 Oscillator circuit, 40 Air tube, 51 Ring, 52 Grip part, 56 Jagged pattern, 57 Groove, 61 Grip part, 100A Sphygmomanometer cuff, 110 Exterior cover, 110a Inner surface 110b Outer surface, 111 Inner peripheral portion, 112 Outer peripheral portion, 120 Outer cover member, 130 Inner cover member, 140 Bias tape, 141 Loop fastener, 142 Hook fastener, 143 Ring fixing cloth, 145 surface fastener, 150 Air bag 151 nipples, 160 rings.

Claims (4)

An exterior body that has an external appearance extending in a belt shape and is wound around the measurement site of the subject so as to bend along the longitudinal direction extending in the belt shape;
A fluid bag housed in the exterior body and supplied with fluid;
A ring member provided on one end side of the exterior body in the longitudinal direction, and when the exterior body is wound around a measurement site of a subject, the other end side of the exterior body in the longitudinal direction is inserted;
The other end side of the exterior body provided on the outer surface of the exterior body in a band shape from the other end side to the one end side of the exterior body, inserted through the ring member, and folded back from the ring member And a hook-and-loop fastener for fixing the portion of the outer body wound around the measurement site of the subject,
A cuff for a sphygmomanometer, comprising: friction increasing means provided on the ring member for increasing friction with the surface fastener. The friction increasing means is a coating layer covering the surface of the ring member,
The sphygmomanometer cuff according to claim 1, wherein the covering layer is formed of a material having a friction coefficient with respect to the surface fastener larger than a friction coefficient between the ring member and the surface fastener.   The sphygmomanometer cuff according to claim 1, wherein an uneven shape is formed on a surface of the ring member as the friction increasing means. The surface fastener includes a first engagement portion provided on the other end side of the exterior body, and the first engagement that extends in a band shape from the other end side to the one end side of the exterior body and is in pressure contact with the first engagement portion. A second engaging portion that engages with the portion,
When the outer body is wound around the site to be measured, the second engagement portion is disposed at a position where the ring member is folded back.
The sphygmomanometer cuff according to claim 1, wherein the friction increasing means is provided so as to increase friction with the second engaging portion.

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