JP2013013488A - Method for manufacturing blood pressure-measuring inflation bag, and blood pressure-measuring pressure band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost method for manufacturing a blood pressure-measuring inflation bag, wherein wrinkles are hard to occur when wound around a part of a living body and wherein a compression pressure becomes uniform in the width direction, and to provide a blood pressure-measuring pressure band including the blood pressure-measuring inflation bag.SOLUTION: The inflation bag 26 is produced by this manufacturing method including: a side edge part fastening step P3 of fastening both side edge parts of an inner sheet 68 and a flat outer sheet 66 to each other in a state that the flat inner sheet 68 is pulled out in the long direction thereof; and an end edge part fastening step P1 of fastening both end edge parts of the inner sheet 68 and the outer sheet 66 to each other before the side edge part fastening step P3.

Description

  The present invention relates to a method for manufacturing an inflatable bag for measuring blood pressure provided in a pressure band for measuring blood pressure wound around a part of a living body and compressing the part of the living body, and for measuring blood pressure including the inflatable bag for measuring blood pressure. It is about the compression belt.

  There is known a pressure band for blood pressure measurement that is provided with a longitudinal blood pressure measurement inflatable bag composed of an outer sheet and an inner sheet that are adhered to each other in a state of being overlapped with each other, and is wound around a part of a living body during blood pressure measurement. It has been. For example, those described in Patent Documents 1 and 2. The blood pressure measurement compression band is wound around a part of the living body, and when the gas or liquid is supplied into the blood pressure measurement expansion bag and the blood pressure measurement expansion bag is inflated, Squeeze a part. In the blood pressure measurement device, for example, a well-known oscillometric method is used to compress a pulse wave that is a pressure vibration in a blood pressure measurement inflation bag generated in response to a change in volume of a part of an artery of a compressed living body. A blood pressure value is determined based on a change in the magnitude of the pulse wave, which is detected during the pressure change process.

  By the way, in a state in which the blood pressure measurement compression band is wound around a part of the living body and the blood pressure measurement inflation bag is inflated, the curvature of the cylindrical surface formed by the inner sheet of the blood pressure measurement inflation bag The radius is smaller than the radius of curvature of the cylindrical surface formed by the outer sheet. For this reason, when a blood pressure measurement inflatable bag is used in which peripheral portions of a flat inner sheet and an outer sheet having the same outer dimensions are fixed to each other, wrinkles are formed on the inner sheet. Due to the occurrence or disappearance of the wrinkles in the process of changing the compression pressure, there has been a problem that blood pressure measurement accuracy is lowered, or the skin at the compression site is locally pulled to cause subcutaneous bleeding. On the other hand, in the inflatable bag for blood pressure measurement of Patent Document 1, the longitudinal dimension of the inner sheet is shorter than the longitudinal dimension of the outer sheet, and there are few wrinkles generated on the inner sheet when wound around a part of the living body. It is comprised so that it may become.

JP 2004-195074 A Japanese Patent Laid-Open No. 3-82440

  By the way, the inflatable bag for blood pressure measurement, which is constructed by mutually adhering the peripheral portions of the flat inner sheet and the outer sheet that are overlapped with each other, swells at the center and the end in the width direction when inflated. Are very different. That is, the bulge at the end in the width direction is smaller than that at the center. For this reason, the pressure applied by the pressure band for blood pressure measurement is not uniform in the width direction, and there is a concern that blood pressure measurement accuracy may be reduced.

  On the other hand, in Patent Document 2, a concave portion is formed in advance on the entire surface of the inner sheet facing the outer sheet, and the inner sheet is bonded to the outer sheet in a stretched state in the longitudinal direction. A blood pressure measurement inflatable bag is described. According to this, the difference in the expansion in the width direction of the blood pressure measurement expansion bag is reduced. However, it is necessary to previously form the concave portion on the inner sheet, and there is a problem that an increase in manufacturing steps and an increase in manufacturing cost occur.

  The present invention has been made against the background of the above circumstances, and its object is to prevent wrinkles on the inner sheet when wound around a part of a living body, and uniform compression pressure in the width direction. Thus, a low-cost manufacturing method of an inflatable bag for blood pressure measurement and a pressure band for measuring blood pressure provided with the inflatable bag for blood pressure measurement are provided.

  The gist of the invention according to claim 1 for achieving the above object is that (a) a blood pressure measurement compression band wound around a part of a living body at the time of blood pressure measurement and stacked on each other A method for producing a longitudinal blood pressure measurement inflatable bag comprising a flat outer sheet and an inner sheet, the peripheral sheet of which is fixed, and (b) the inner sheet with the inner sheet stretched in the longitudinal direction. A side edge fixing step for mutually fixing the side edge portion of the outer sheet and the side edge portion of the outer sheet, and (c) prior to the side edge portion fixing step, during the side edge portion fixing step, or on the side thereof The edge fixing step includes an edge fixing step of fixing the edge of the inner sheet and the edge of the outer sheet to each other after the edge fixing step.

  According to a second aspect of the present invention, there is provided: (a) a longitudinal outer blood pressure measurement inflatable bag comprising a flat outer sheet and an inner sheet, the peripheral edges of which are fixed to each other in a stacked state. A blood pressure measurement compression band wound around a part of a living body in blood pressure measurement, wherein (b) the inner sheet has a shorter longitudinal dimension than the outer sheet in the longitudinal direction, and the longitudinal direction It has a width dimension longer than the said outer sheet | seat in the center part.

  A gist of the invention according to claim 3 is that, in the invention according to claim 2, (a) the outer periphery in which the blood pressure measurement inflatable bag is accommodated and the peripheral edge portion is fixed in a state of being stacked on each other (B) The inner peripheral cloth has a longitudinal dimension shorter than that of the outer peripheral cloth in the longitudinal direction.

  According to the method for manufacturing an inflatable bag for measuring blood pressure of the invention according to claim 1, in a state where the inner sheet is stretched in the longitudinal direction, the side edge portion of the inner sheet and the side edge portion of the outer sheet are mutually connected. Prior to the side edge fixing step, the side edge fixing step, and during the side edge fixing step, or after the side edge fixing step, the edge of the inner sheet and the end of the outer sheet In the inflatable bag for blood pressure measurement thus manufactured, the inner sheet has a shorter longitudinal dimension than the outer sheet, and in the free state in the longitudinal direction. Since it becomes a bent cylindrical shape or a partial cylindrical shape, it is difficult to cause wrinkles on the inner sheet when wound around a part of the living body. In addition, the manufactured inflatable bag for blood pressure measurement has a width dimension in which the inner sheet is longer than the outer sheet, and the difference in the amount of bulge between the center portion and the end portion in the width direction during expansion is reduced. In this case, the compression pressure becomes uniform. Further, in order to reduce the difference in the amount of swelling, for example, it is not necessary to form a recess or the like in advance on the entire surface of the inner sheet facing the outer sheet. Therefore, it is difficult to cause wrinkles on the inner sheet when wound around a part of the living body, and the compression pressure is uniform in the width direction, so that a low-cost inflatable bag for blood pressure measurement can be obtained.

  According to the compression band for blood pressure measurement of the invention according to claim 2, the inner sheet of the inflatable bag for blood pressure measurement has a longitudinal dimension shorter than the outer sheet in the longitudinal direction, and the central part in the longitudinal direction. In the free state, the inflatable bag for blood pressure measurement has a cylindrical shape or a partial cylindrical shape bent in the longitudinal direction in the free state, and also has a central portion and an end portion in the width direction during expansion. The difference in the amount of bulges from is small. And in order to make the difference of the said bulging amount small, it is not necessary to shape | mold a recessed part etc. previously in the whole opposing surface with the outer sheet | seat of an inner sheet | seat, for example. Therefore, it is difficult to cause wrinkles on the inner sheet when wound around a part of the living body, and the compression pressure is uniform in the width direction, so that a blood pressure measurement compression band including a low-cost inflation blood pressure measurement bag is obtained.

  According to the compression band for blood pressure measurement of the invention according to claim 3, the blood pressure measurement inflatable bag is accommodated, and is composed of an outer peripheral side cloth and an inner peripheral side cloth that are fixed to each other in a superposed state. Since it has a longitudinal wrapping cloth and the inner peripheral side cloth has a shorter longitudinal dimension than the outer peripheral side cloth in the longitudinal direction, the inner peripheral side cloth is also wound when wound around a part of a living body. It is hard for wrinkles to occur.

The structure of the automatic blood pressure measuring device provided with the compression band of one Example of this invention wound around the upper arm of the biological body is shown. It is a figure which shows the outer peripheral surface of the compression band of FIG. 1 developed in the plane. It is a figure which shows the internal peripheral surface of the compression belt | belt of FIG. 1 developed on the plane. FIG. 4 is a cross-sectional view of a compression band conceptually showing the IV-IV cross section of FIG. 2. It is a longitudinal cross-sectional view of the compression band which was made into the free state and bent in the longitudinal direction. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. It is a figure which shows the outer side sheet | seat before welding with the inner side sheet | seat of the expansion | swelling bag of FIG. It is a figure which shows the inner side sheet | seat before welding with the outer side sheet | seat of the expansion | swelling bag of FIG. It is process drawing which shows the manufacturing process of the expansion | swelling bag of FIG. It is a figure which shows notionally the expansion | swelling bag in the edge part adhering process of FIG. It is a side view of the expansion bag of FIG. It is an enlarged view of the XII arrow part of FIG. It is a figure which shows notionally the expansion | swelling bag in the extending process of FIG. It is a figure which shows notionally the expansion | swelling bag in the side edge part adhering process of FIG. It is a figure for demonstrating the manufacturing method of the winding fabric of FIG. 5, Comprising: The 1st inner peripheral side cloth piece, the 2nd inner peripheral side cloth piece, and the 1st outer peripheral side cloth piece are mutually piled up and sewn. FIG. It is a figure for demonstrating the manufacturing method of the winding fabric of FIG. 5, Comprising: It is a figure which shows the state which the 2nd inner peripheral side cloth piece and the 2nd outer peripheral side cloth piece were sewn. It is a figure for demonstrating the manufacturing method of the winding fabric of FIG. 5, Comprising: The state which slackened the 2nd outer peripheral side cloth piece in the longitudinal direction, A 1st inner peripheral side cloth piece and a 1st outer peripheral side cloth piece It is a figure which shows the state by which the peripheral part of was sewn. It is a figure for demonstrating the manufacturing method of the winding fabric of FIG. 5, Comprising: The 2nd inner peripheral side cloth piece was extended in the longitudinal direction until the slack in the longitudinal direction of the 2nd outer peripheral side cloth piece disappeared. It is a figure which shows the state by which one of a pair of side edge part of a 2nd inner peripheral side cloth piece and a 2nd outer peripheral side cloth piece was sewn in the state. It is a figure for demonstrating the manufacturing method of the winding fabric of FIG. 5, Comprising: The state of the 2nd inner peripheral side cloth piece and the 2nd outer peripheral side cloth piece in the state which the 2nd inner peripheral side cloth piece was extended. It is a figure which shows the state by which the other of a pair of side edge part was sewn. It is process drawing which shows the manufacturing process of the expansion bag of the other Example of this invention. It is a figure which shows notionally the expansion | swelling bag in the edge part adhering process of FIG. It is a figure which shows notionally the expansion | swelling bag in the extending process of FIG. It is a figure which shows notionally the expansion | swelling bag in the side edge part adhering process of FIG. It is a figure for demonstrating the manufacturing method of the winding fabric of the other Example of this invention, Comprising: It is a figure which shows the state by which the 2nd inner peripheral side cloth piece and the 2nd outer peripheral side cloth piece were sewn. It is a figure for demonstrating the manufacturing method of the winding fabric of the other Example of this invention, Comprising: In the center part of the longitudinal direction of a winding fabric among 2nd outer peripheral side fabric pieces and 1st outer peripheral side fabric pieces. It is a figure which shows the state by which the both sides of the width direction of the edge part to be located were each sewn. It is a figure for demonstrating the manufacturing method of the winding fabric of the other Example of this invention, Comprising: The 1st outer peripheral side cloth piece piled up mutually in the state which the 2nd outer peripheral side cloth piece slackened in the longitudinal direction. It is a figure which shows the state by which the 2nd inner peripheral side cloth piece was sewn in the width direction. It is a figure for demonstrating the manufacturing method of the winding fabric of the other Example of this invention, Comprising: A 2nd inner peripheral side cloth piece is the longitudinal direction until the slack of the longitudinal direction of a 2nd outer peripheral side cloth piece disappears. It is a figure which shows the state by which one of a pair of side edge part of the 2nd inner peripheral side cloth piece and the 2nd outer peripheral side cloth piece was sewn in the extended state. It is a figure for demonstrating the manufacturing method of the winding fabric of the other Example of this invention, Comprising: A 2nd inner peripheral side cloth piece is the longitudinal direction until the slack of the longitudinal direction of a 2nd outer peripheral side cloth piece disappears. It is a figure which shows the state by which the other of a pair of side edge part of a 2nd inner peripheral side cloth piece and a 2nd outer peripheral side cloth piece was sewn in the extended state. It is a figure for demonstrating the manufacturing method of the winding fabric of the other Example of this invention, Comprising: The peripheral part of the 1st inner peripheral side cloth piece and the 2nd inner peripheral side cloth piece which were mutually piled up is sewn. FIG. It is process drawing which shows the manufacturing process of the expansion bag of the other Example of this invention. FIG. 31 is a diagram conceptually showing an inflatable bag during the stretching process of FIG. 30 and showing a state in which a sheet is stretched. FIG. 31 is a diagram conceptually showing an inflatable bag during the stretching process of FIG. 30, and shows a state before the sheet is stretched. It is a figure which shows notionally the expansion | swelling bag in the side edge part adhering process of FIG. It is a figure which shows notionally the expansion | swelling bag in the edge part adhering process of FIG. It is process drawing which shows the manufacturing process of the expansion | swelling bag in the other Example of this invention. It is a perspective view explaining the process of adhering beforehand the part which is not extended among the side edge parts in the side edge part adhering process of FIG. FIG. 36 is a diagram conceptually showing an inflatable bag in the stretching process of FIG. 35, and shows a state before the sheet is stretched.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiments, the drawings are appropriately simplified or modified, and the dimensional ratios, shapes, and the like of the respective parts are not necessarily drawn accurately.

  FIG. 1 shows a configuration of an automatic blood pressure measurement device 14 including a compression band (pressure band for blood pressure measurement) 12 of an embodiment of the present invention wound around the upper arm 10 of a living body. As shown in FIG. 1, a main pipe 18 is connected to the pipe connection connector 16 of the compression band 12. A pressure sensor 20, an exhaust control valve 22, and an air pump 24 are connected to the main pipe 18. The pressure sensor 20 detects a pressure value in an expansion bag 26 (see FIG. 4) provided in the compression band 12 and communicated with the main pipe 18 via the pipe connector 16 and a pressure signal representing the pressure value. SP is output.

  The electronic control device 28 is a so-called microcomputer including a CPU 30, a RAM 32, a ROM 34, and the like. The electronic control device 28 controls the exhaust control valve 22 and the air pump 24 by the CPU 30 using the storage function of the RAM 32 and processing input signals in accordance with a program stored in the ROM 34 in advance. The electronic control device 28 is supplied with an activation signal SS that serves as a cue to start blood pressure measurement from the activation pushbutton switch 36. In addition, the electronic control unit 28 includes a cuff pressure signal SK indicating the compression pressure of the compression band 12 discriminated by the low-pass filter 38 among the pressure signals SP output from the pressure sensor 20, and the pressure output from the pressure sensor 20. Among the signals SP, pulse wave signals SM which are pressure vibrations generated in synchronization with the heartbeat of the living body discriminated by the band pass filter 42 are supplied via the A / D converter 40, respectively.

  The automatic blood pressure measurement device 14 configured as described above has an expansion bag for rapidly increasing the pressure in the expansion bag 26 of the compression band 12 when the blood pressure measurement activation signal SS is supplied to the electronic control device 28. 26 is supplied with compressed air (gas). When the pressure value in the expansion bag 26 reaches a target pressure increase value that is set sufficiently higher than the maximum blood pressure value in advance, the pressure increase in the expansion bag 26 is stopped. Then, by gradually exhausting the air in the expansion bag 26, the pressure in the expansion bag 26 is gradually reduced at a substantially constant speed. Then, during the period in which the pressure in the expansion bag 26 is gradually reduced, the systolic blood pressure value and the diastolic blood pressure value are determined based on the change in the magnitude of the pulse wave signal SM according to a well-known oscillometric method. Then, the determined blood pressure value is displayed on the display 44, and the air in the inflatable bag 26 is rapidly exhausted to release the pressure on the upper arm 10 by the compression band 12, and the blood pressure measurement is terminated.

  FIG. 2 is a diagram showing an outer peripheral surface of the compression band 12 developed in a plane, and FIG. 3 is a diagram showing an inner circumferential surface of the compression band 12 developed in a plane. FIG. 4 is a cross-sectional view of the compression band 12 conceptually showing a cross section taken along line IV-IV in FIG. In addition, the vertical dotted line shown in FIG. 4 represents the seam by sewing.

  As shown in FIG. 2 to FIG. 4, the compression band 12 includes an outer peripheral side cloth 46 and an inner peripheral side cloth 48 made of synthetic resin fiber cloth and non-woven cloth, which are overlapped with each other. The wrapping cloth 52 is formed in a longitudinal and bag shape by sewing. The outer peripheral side cloth 46 and the inner peripheral side cloth 48 are made of a material that has plasticity, is bendable, and is relatively inextensible. The inner circumferential side fabric 48 has a longitudinal dimension shorter than that of the outer circumferential side fabric 46 in the longitudinal direction, and the wound fabric 52 is a cylinder bent in the longitudinal direction in a free state as shown in FIG. It becomes a shape. Note that the compression band 12 of FIG. 5 is illustrated with one of the longitudinal directions cut away.

  Further, the compression band 12 is an elastically deformable synthetic resin planted on the outer peripheral surface of one end portion of the wrapping cloth 52 located on the right side of the seam 54 at the center in the longitudinal direction of the wrapping cloth 52 shown in FIG. Fasteners 56 made of a large number of hook-shaped projections made of metal and fasteners 58 made of a large number of loop-like fibers planted on the inner peripheral surface of the other end of the wound fabric 52 so as to be engaged therewith. . In the compression band 12, the pair of fasteners 56 and 58 are bonded to each other with the other end of the wrapping cloth 52 overlapped on the outer peripheral side of one end of the wrapping cloth 52 in which the expansion bag 26 and the like are accommodated. By this, as shown in FIG. 1, it attaches to the upper arm 10 so that attachment or detachment is possible.

  The compression band 12 includes an elastic core member 62, an anti-sticking sheet 64, and an inflatable bag 26 that are accommodated in order from the outer peripheral surface side in the bag 60 formed at one end in the longitudinal direction of the wound fabric 52. ing. The elastic core member 62 and the inflatable bag 26 are accommodated in the wrapping cloth 52 in a state where the longitudinal direction thereof is matched with the longitudinal direction of the compression band 12.

  The elastic core member 62 is made of a synthetic resin sheet-like member that can be elastically deformed by bending in the longitudinal direction. In the free state, the elastic core member 62 has a partial cylindrical shape bent in the longitudinal direction as shown in FIG. The elastic core member 62 retains the cylindrical shape of the compression band 12 when the compression band 12 is wound around the upper arm 10 and holds the expansion bag 26 on the outer peripheral side thereof.

  The sticking prevention sheet 64 is interposed between the elastic core member 62 and the expansion bag 26 and is a member that prevents the expansion bag 26 from sticking to the elastic core member 62. The sticking prevention sheet 64 is made of a cloth-like sheet-like member made of a synthetic resin having a property of being relatively slippery in the surface direction with respect to the expansion bag 26. Thereby, the expansion bag 26 is suppressed from sticking to the inner peripheral surface of the sticking prevention sheet 64.

  The inflatable bag 26 is composed of a flat outer sheet 66 and an inner sheet 68 whose peripheral portions are airtightly fixed by, for example, high frequency welding or ultrasonic welding in a state where they are overlapped with each other, and are inflated in a longitudinal and bag shape. It is a possible member. As shown in FIGS. 7 and 8, the outer sheet 66 and the inner sheet 68 are made of a soft and flexible material such as a soft polyvinyl chloride sheet or a natural or synthetic rubber sheet.

  FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. As shown in FIGS. 5 and 6, the inner sheet 68 has a longer longitudinal dimension than the outer sheet 66 in the longitudinal direction, and a longer width dimension than the outer sheet 66 in the center in the longitudinal direction. Yes. The width dimension of the inner sheet 68 is longer from the end in the longitudinal direction toward the center. Therefore, the inflatable bag 26 has a partially cylindrical shape bent in the longitudinal direction in the free state. Therefore, no wrinkles are formed on the inner sheet 68 of the expansion bag 26. In the outer sheet 66, the slack in the longitudinal direction appears as wrinkles according to the difference in the longitudinal dimension with the inner sheet 68, but the wrinkles disappear when expanded.

  A pipe connector 16 is connected to the outer sheet 66. The pipe connecting connector 16 is exposed to the outer peripheral surface side of the compression band 12 through the outer peripheral cloth 46 and connected to the main pipe 18. The expansion bag 26 is inflated by supplying gas or liquid from the air pump 24 via the tube connector 16.

  The compression band 12 configured as described above is wound around a part of the living body, for example, the upper arm 10 when measuring blood pressure. At this time, the expansion bag 26 included in the compression band 12 is also wound around the outer periphery of the upper arm 10 in a cylindrical shape. Since the inflatable bag 26 in the free state has a longitudinal dimension of the outer sheet 66 sufficiently larger than the longitudinal dimension of the inner sheet 68, the inflatable bag 26 is wound around the upper arm 10 so as to have a smaller diameter cylindrical shape than in the free state. Even in such a case, wrinkles do not occur on the inner sheet 68 until the outer sheet 66 is loosened.

  When, for example, compressed air is supplied into the inflatable bag 26 and the inflatable bag 26 is inflated, the upper arm 10 is compressed, and the pressure vibration generated in response to the volume change of the artery 70 in the upper arm 10 is electronically controlled. Detected by device 28. Since the expansion bag 26 is configured such that the width dimension of the inner sheet 68 is longer than the width dimension of the outer sheet 66, for example, compared to a case where the width dimension is the same between the inner side and the outer side, The difference in the amount of swelling between the center portion and the end portion in the width direction is sufficiently small. That is, the central part and the end part in the width direction expand to the same extent.

  According to the compression band (blood pressure measurement compression band) 12 of the present embodiment, the inner sheet 68 of the expansion bag (blood pressure measurement expansion bag) 26 has a shorter longitudinal dimension than the outer sheet 66 in the longitudinal direction, In addition, since it has a width dimension longer than that of the outer sheet 66 at the center portion in the longitudinal direction, the expansion bag 26 has a cylindrical shape or a partial cylindrical shape bent in the longitudinal direction in the free state, and also in the width direction during expansion. The difference in the amount of swelling between the center portion and the end portion is small. In order to reduce the difference in the amount of swelling, for example, it is not necessary to previously form a recess or the like on the entire surface of the inner sheet 68 facing the outer sheet 66. Accordingly, the inner sheet 68 is less likely to wrinkle when wound around a part of the living body, and the compression pressure is uniform in the width direction, so that the low-cost inflatable bag 26 and the compression band 12 including the same can be obtained.

  In addition, according to the compression band 12 of the present embodiment, the longitudinal wrapping comprising the outer peripheral side cloth 46 and the inner peripheral side cloth 48, which accommodates the expansion bag 26 and has a peripheral edge fixed in a state of being overlapped with each other. Since the inner peripheral side cloth 48 has a shorter longitudinal dimension than the outer peripheral side cloth 46 in the longitudinal direction, the inner peripheral side cloth 48 is wrinkled when wound around a part of a living body. It is hard to occur.

  9-14 is a figure for demonstrating the manufacturing method of the expansion bag 26. As shown in FIG. Among these, FIG. 9 is a process diagram showing the manufacturing process of the expansion bag 26. 10, FIG. 13, and FIG. 14 are front views of the inflatable bag 26 conceptually showing the inflatable bag 26 being manufactured, and FIG. 11 is a side view of the inflatable bag 26 in FIG. FIG. 12 is an enlarged view of the XII arrow portion of FIG. Hereinafter, the manufacturing method of the expansion bag 26 will be described with reference to these drawings.

  First, in the edge adhering step P1 of FIG. 9, both ends in the longitudinal direction of the outer sheet 66 in which the pipe connector 16 is provided in advance in the one shown in FIG. 7 and the inner sheet 68 shown in FIG. As shown in FIGS. 10 to 12, they are fixed by a pair of fixing tools 72 in a state where they are overlapped with each other so that their longitudinal edges coincide with each other. At this time, a force is applied to the pair of fixtures 72 in the direction indicated by the arrow a in FIG. 11, and both ends of the sheets 66 and 68 are sandwiched by the pair of fixtures 72, respectively. 7 and 8, the length W2 of the inner sheet 68 is set to be smaller than the length W1 of the outer sheet 66. The difference between the length W1 and the length W2 is set to about 3 cm, for example. Further, the inner sheet 68 is set to have a width larger than the outer sheet 66 by a predetermined value α. That is, the inner sheet 68 is set to the width L + α with respect to the width L of the outer sheet 66. The predetermined value α is set to about 1 to 2 cm, for example.

  Subsequently, both end portions of the outer sheet 66 and the inner sheet 68 are fixed to each other, for example, by high frequency welding. As shown in FIG. 10 to FIG. 12 as a welded portion A1, the fixing is performed continuously over the entire width direction at one end and the other end. In this embodiment, the edge fixing step P1 is performed prior to the side edge fixing step P3 described later.

  Next, in the stretching process P2 of FIG. 9, as shown in FIG. 13, the pair of fixtures 72 are shown while the longitudinal ends of the outer sheet 66 and the inner sheet 68 are held between the pair of fixtures 72. 13, the inner sheet 68 is stretched in the direction indicated by the arrow c in FIG. 13, that is, in the longitudinal direction, until the longitudinal sag of the outer sheet 66 disappears. At this time, the inner sheet 68 stretched in the longitudinal direction is reduced in width dimension from the end in the longitudinal direction toward the center. Then, the width of the central portion in the longitudinal direction of the inner sheet 68 is reduced to the extent that it matches the width L of the outer sheet 66.

  Next, in the side edge fixing step P3 of FIG. 9, with the inner sheet 68 stretched in the longitudinal direction, as shown in FIG. 14, both side edges of the inner sheet 68 and both side edges of the outer sheet 66 Are fixed to each other, for example, by high frequency welding. As shown in FIG. 14 as a welded portion A2, the fixing is performed continuously from the welded portion A1 at one end to the welded portion A1 at the other end over the entire longitudinal direction. The An airtight space is formed between the inner sheet 68 and the outer sheet 66.

  Next, in the cutting process P4 of FIG. 9, the inner sheet 68 and the outer sheet 66 are respectively cut by cutting the portion outside the welded portion A1 in the longitudinal direction and the portion outside the welded portion A2 in the width direction. A bag 26 is obtained.

  According to the method for manufacturing the inflatable bag 26 of the present embodiment, both side edges of the inner sheet 68 and both side edges of the outer sheet 66 are fixed to each other in a state where the inner sheet 68 is stretched in the longitudinal direction. A side edge fixing step P3, and prior to the side edge fixing step P3, an edge fixing step P1 for fixing the both edges of the inner sheet 68 and the edges of the outer sheet 66 to each other. Therefore, the produced inflatable bag 26 has a longitudinal dimension in which the inner sheet 68 is shorter than the outer sheet 66, and becomes a cylindrical shape or a partial cylindrical shape bent in the longitudinal direction in a free state. When wound, the inner sheet 68 is less likely to wrinkle. Further, in the produced expansion bag 26, the inner sheet 68 has a longer width dimension than the outer sheet 66, and the difference in the amount of expansion between the central portion and the end portion in the width direction at the time of expansion is small. In this case, the compression pressure becomes uniform. Further, in order to reduce the difference in the amount of swelling, for example, it is not necessary to previously form a recess or the like on the entire surface of the inner sheet 68 facing the outer sheet 66. Therefore, wrinkles are not easily generated in the inner sheet 68 when wound around a part of the living body, and the compression pressure is uniform in the width direction, so that the low-cost inflatable bag 26 is obtained.

  FIGS. 15-19 is a figure for demonstrating the manufacturing method of the winding fabric 52, Comprising: It is a perspective view which shows notionally the winding fabric 52 in the middle of manufacture. Hereinafter, a method for manufacturing the wound fabric 52 will be described with reference to these drawings.

  First, as shown in FIG. 15, of the first inner peripheral side cloth piece 74 and the second inner peripheral side cloth piece 76 constituting the inner peripheral side cloth 48, and the pair of cloth pieces constituting the outer peripheral side cloth 46. On the other hand, that is, the first outer peripheral side fabric piece 78 is sewn in a state where the end portions positioned at the center portion in the longitudinal direction of the wound fabric 52 are overlapped with each other. The sewing location is shown as a sewing portion B1 in FIG.

  Next, as shown in FIG. 16, the second inner peripheral cloth piece 76 and the other of the pair of cloth pieces constituting the outer peripheral cloth 46, that is, the second outer peripheral cloth piece 80, are wound around the wrapping cloth 52. Are sewn in a state in which the end portions positioned at one end portion in the longitudinal direction of each other are overlapped with each other. The sewing location is shown as a sewing portion B2 in FIG.

  Next, as shown in FIG. 17, the peripheral portions of the first inner peripheral fabric piece 74 and the first outer peripheral fabric piece 78 are sewn with the second outer peripheral fabric piece 80 slackened in the longitudinal direction. The sewing location is shown as a sewing portion B3 in FIG.

  Next, as shown in FIG. 18, the second inner peripheral cloth piece 76 is stretched in the longitudinal direction until the second outer peripheral cloth piece 80 is not loosened in the longitudinal direction. Then, one of the pair of side edge portions of the second inner peripheral cloth piece 76 and the second outer peripheral cloth piece 80 is sewn in a state where the second inner peripheral cloth piece 76 is stretched as described above. . The sewing location is shown as a sewing portion B4 in FIG.

  Next, as shown in FIG. 19, the other of the pair of side edges of the second inner peripheral fabric piece 76 and the second outer peripheral fabric piece 80 in a state where the second inner peripheral fabric piece 76 is stretched. Is sewn to obtain a wound fabric 52. The sewing location is shown as a sewing portion B5 in FIG.

  Note that when the cloth pieces 76 to 80 are sewn, the edge cloth 50 and the sticking prevention sheet 64 are also sewn, but the border cloth 50 and the sticking prevention sheet 64 are not shown in FIGS. Yes.

  According to the method for manufacturing the wrapping cloth 52 of the present embodiment, the second inner peripheral side cloth piece 76 and the second outer peripheral side cloth 76 are stretched in the longitudinal direction of the second inner peripheral side cloth piece 76. Since both side edge portions of the piece 80 are sewn, the wound fabric 52 manufactured is wound around a part of the living body because the inner peripheral fabric 48 has a shorter longitudinal dimension than the outer peripheral fabric 46. Occasionally wrinkles are less likely to occur on the inner circumferential side fabric 48.

  Next, another embodiment of the present invention will be described. In the following description of the embodiments, portions that overlap each other are denoted by the same reference numerals and description thereof is omitted.

  20-23 is a figure for demonstrating the manufacturing method of the expansion bag 90 of the other Example of this invention. Among these, FIG. 20 is a process diagram showing a manufacturing process of the expansion bag 90. 21 to 23 are front views of the inflatable bag 90 conceptually showing the inflatable bag 90 being manufactured. Hereinafter, a method for manufacturing the expansion bag 90 will be described with reference to these drawings.

  First, in the edge adhering step P11 of FIG. 20, the outer sheet 66 in which the connector for pipe connection 16 is provided in advance to the one shown in FIG. 7 and the inner sheet 68 shown in FIG. In the state where they are overlapped with each other so that the both end edges in the longitudinal direction coincide with each other, they are fixed to each other by high frequency welding, for example. As shown in FIG. 21 as a welded portion C1, the fixing is performed continuously in the entire width direction at two locations separated by a predetermined distance in the longitudinal direction at one and the other end portions. Is done. In this embodiment, the end edge fixing step P11 is performed prior to the side edge fixing step P13 described later.

  Next, in the extending step P12 of FIG. 20, as shown in FIG. 22, a pair of extending rods 92 are inserted between the pair of welded portions C1 at both ends in the longitudinal direction of the outer sheet 66 and the inner sheet 68, respectively. Subsequently, the pair of extending rods 92 are moved in the direction indicated by the arrow d in FIG. 22 and separated from each other, so that the inner sheet 68 is moved by the arrow e in the drawing until the longitudinal slack of the outer sheet 66 is eliminated. It is stretched in the direction shown, ie in the longitudinal direction. At this time, the inner sheet 68 stretched in the longitudinal direction is reduced in width dimension from the end in the longitudinal direction toward the center. Then, the width of the central portion in the longitudinal direction of the inner sheet 68 is reduced to the extent that it matches the width L of the outer sheet 66.

  Next, in the side edge fixing step P13 of FIG. 20, with the inner sheet 68 stretched in the longitudinal direction, as shown in FIG. 23, both side edges of the inner sheet 68 and both side edges of the outer sheet 66 Are fixed to each other, for example, by high frequency welding. The fixing is performed continuously over the entire length from the welded portion C1 at one end to the welded portion C1 at the other end, as shown as a welded portion C2 in the drawing. . An airtight space is formed between the inner sheet 68 and the outer sheet 66.

  Next, in the cutting process P14 of FIG. 20, the inner sheet 68 and the outer sheet 66 are respectively cut by cutting a portion outside the welded portion C1 in the longitudinal direction and a portion outside the welded portion C2 in the width direction. A bag 90 is obtained.

  According to the method for manufacturing the inflatable bag 90 of the present embodiment, the side edge of the inner sheet 68 and the side edge of the outer sheet 66 are fixed to each other while the inner sheet 68 is stretched in the longitudinal direction. A side edge fixing step P13, and prior to the side edge fixing step P13, an edge fixing step P11 for fixing the edge of the inner sheet 68 and the edge of the outer sheet 66 to each other. Therefore, the produced inflatable bag 90 has a longitudinal dimension in which the inner sheet 68 is shorter than the outer sheet 66, and becomes a cylindrical shape or a partial cylindrical shape bent in the longitudinal direction in a free state. When wound, the inner sheet 68 is less likely to wrinkle. Further, in the produced expansion bag 90, the inner sheet 68 has a longer width dimension than the outer sheet 66, and the difference in the amount of expansion between the center portion and the end portion in the width direction at the time of expansion is small. In this case, the compression pressure becomes uniform. Further, in order to reduce the difference in the amount of swelling, for example, it is not necessary to previously form a recess or the like on the entire surface of the inner sheet 68 facing the outer sheet 66. Therefore, wrinkles are unlikely to occur in the inner sheet 68 when wound around a part of the living body, and the compression pressure is uniform in the width direction, so that a low-cost inflatable bag 90 is obtained.

  24 to 29 are views for explaining a method of manufacturing the wound cloth 94 according to another embodiment of the present invention and are perspective views conceptually showing the wound cloth 94 being manufactured. Hereinafter, a method for manufacturing the wound fabric 94 will be described with reference to these drawings.

  First, as shown in FIG. 24, the second inner peripheral fabric piece 76 and the second outer peripheral fabric piece 80 are overlapped with each other at the ends positioned at the ends in the longitudinal direction of the wound fabric 94. Sew in the state. The sewing location is shown as a sewing portion D1 in FIG.

  Next, as shown in FIG. 25, the second outer peripheral fabric piece 80 and the first outer peripheral fabric piece 78 in a state where the second outer peripheral fabric piece 80 and the first outer peripheral fabric piece 78 are overlapped with each other. Among them, both sides in the width direction of the end portion positioned at the center portion in the longitudinal direction of the wound fabric 94 are respectively sewn. The sewing location is shown as a sewing portion D2 in FIG.

  Next, as shown in FIG. 26, the first outer peripheral side fabric piece 78 and the second inner peripheral side fabric piece 76 which are overlapped with each other in the state where the second outer peripheral side fabric piece 80 is slackened in the longitudinal direction thereof are Sewing in the direction. The sewing location is shown as a sewing portion D3 in FIG.

  Next, as shown in FIG. 27, the second inner peripheral cloth piece 76 is stretched in the longitudinal direction until the second outer peripheral cloth piece 80 is not loosened in the longitudinal direction. Then, one of the pair of side edge portions of the second inner peripheral cloth piece 76 and the second outer peripheral cloth piece 80 is sewn in a state where the second inner peripheral cloth piece 76 is stretched as described above. . The sewing location is shown as a sewing portion D4 in FIG.

  Next, as shown in FIG. 28, the other of the pair of side edge portions of the second inner peripheral fabric piece 76 and the second outer peripheral fabric piece 80 in a state where the second inner peripheral fabric piece 76 is stretched. Is sewn. The sewing location is shown as a sewing portion D5 in FIG.

  Next, as shown in FIG. 29, the peripheral portions of the first inner circumferential side fabric piece 74 and the second inner circumferential side fabric piece 76 that are overlapped with each other are sewn to obtain a wound fabric 94. The sewing location is shown as a sewing portion D6 in FIG.

  The edge cloth 50 and the anti-sticking sheet 64 are also sewn when the cloth pieces 76 to 80 are sewn. However, the edge cloth 50 and the anti-sticking sheet 64 are not shown in FIGS. Yes.

  According to the method for manufacturing the wound fabric 94 of the present embodiment, the second inner peripheral side fabric piece 76 and the second outer peripheral side fabric 76 in a state where the second inner peripheral side fabric piece 76 is stretched in the longitudinal direction. Since both side edges of the piece 80 are sewn, the manufactured wound fabric 94 is wound around a part of the living body because the inner peripheral fabric 48 has a shorter longitudinal dimension than the outer peripheral fabric 46. Occasionally wrinkles are less likely to occur on the inner circumferential side fabric 48.

  30-34 is a figure for demonstrating the manufacturing method of the expansion | swelling bag 100 of the other Example of this invention. Among these, FIG. 30 is a process diagram showing the manufacturing process of the inflatable bag 100. 31 to 34 are front views of the inflatable bag 100 conceptually showing the inflatable bag 100 being manufactured. Hereinafter, a method for manufacturing the inflatable bag 100 will be described with reference to these drawings.

  First, in the extending step P21 of FIG. 30, both ends in the longitudinal direction of the outer sheet 66 in which the pipe connector 16 is provided in advance in the one shown in FIG. 7 and the inner sheet 68 shown in FIG. 8 are shown in FIG. In this manner, the two ends are fixed by the pair of fixing tools 72 in a state where they are overlapped with each other so that their longitudinal edges coincide with each other. Subsequently, as shown in FIG. 32, the pair of fixtures 72 are indicated by arrows f in FIG. 32 while the longitudinal ends of the outer sheet 66 and the inner sheet 68 are held between the pair of fixtures 72. The inner sheet 68 is stretched in the direction indicated by the arrow g in FIG. 32, that is, in the longitudinal direction until the longitudinal sag of the outer sheet 66 disappears by moving in the direction away from each other. At this time, the inner sheet 68 stretched in the longitudinal direction is reduced in width dimension from the end in the longitudinal direction toward the center. Then, the width of the central portion in the longitudinal direction of the inner sheet 68 is reduced to the extent that it matches the width L of the outer sheet 66.

  Next, in the side edge fixing step P22 of FIG. 30, as shown in FIG. 33, both the side edges of the inner sheet 68 and the side edges of the outer sheet 66 are stretched in the longitudinal direction. Are fixed to each other, for example, by high frequency welding. As shown in FIG. 33 as a welded portion E1, the fixing is performed continuously on the one side and the other side over the entire longitudinal direction.

  Next, in the edge fixing step P23 of FIG. 30, the both ends of the outer sheet 66 and the inner sheet 68 are fixed to each other, for example, by high frequency welding in a state where the inner sheet 68 is stretched in the longitudinal direction. Then, by releasing the fixing by the pair of fixing tools 72, as shown in FIG. 34, the outer sheet 66 and the inner sheet 68 in which the peripheral edges are fixed to each other and an airtight space is formed inside are obtained. As shown in FIG. 34 as a welded portion E2, the above-described fixing is performed continuously over the entire width direction from the welded portion E1 on one side to the welded portion E1 on the other side. The In this embodiment, the end edge fixing step P23 is performed after the side edge fixing step P22.

  Next, in the cutting step P24 of FIG. 30, the inner sheet 68 and the outer sheet 66 are respectively cut by cutting the portion outside the welded portion E2 in the longitudinal direction and the portion outside the welded portion E1 in the width direction. A bag 100 is obtained.

  According to the method for manufacturing the inflatable bag 100 of the present embodiment, both side edges of the inner sheet 68 and both side edges of the outer sheet 66 are fixed to each other in a state where the inner sheet 68 is stretched in the longitudinal direction. Including a side edge fixing step P22 and, after the side edge fixing step P22, an edge fixing step P23 for fixing both edge portions of the inner sheet 68 and both edge portions of the outer sheet 66 to each other. Thus, the produced inflatable bag 100 has the inner sheet 68 having a shorter longitudinal dimension than the outer sheet 66, and becomes a cylindrical shape or a partial cylindrical shape bent in the longitudinal direction in a free state. When turned, the inner sheet 68 is less likely to wrinkle. Further, in the produced inflatable bag 100, the inner sheet 68 has a longer width dimension than the outer sheet 66, and the difference in the amount of bulging between the center portion and the end portion in the width direction at the time of expansion is small. In this case, the compression pressure becomes uniform. Further, in order to reduce the difference in the amount of swelling, for example, it is not necessary to previously form a recess or the like on the entire surface of the inner sheet 68 facing the outer sheet 66. Therefore, wrinkles are unlikely to occur in the inner sheet 68 when wound around a part of the living body, and the compression pressure is uniform in the width direction, so that the low-cost inflatable bag 100 can be obtained.

  35-38 is a figure explaining the manufacturing method of the expansion | swelling bag 110 of the other Example of this invention. Among these, FIG. 35 is a process diagram showing the manufacturing process of the expansion bag 110. FIG. 36 is a perspective view for explaining a side edge portion fixing step P30 for fixing in advance a portion of the side edge that is not stretched, and FIG. 37 is a diagram conceptually showing an expansion bag P31 during the stretching step. FIG. 5 is a diagram illustrating a state before the sheet is stretched. Hereinafter, the manufacturing method of the expansion bag 110 is demonstrated using these figures.

  In the side edge portion fixing step P30 of FIG. 35, the outer sheet 66 in which the connector for pipe connection 16 is provided in advance to the one shown in FIG. 7 and the inner sheet 68 shown in FIG. In a state where both ends in the longitudinal direction are overlapped with each other, for example, using high-frequency welding, the partial side edges located in the middle in the longitudinal direction of the mutual side edges are welded to each other. Secure. As shown in FIG. 36 as the welded portion F1, the fixing is continuously performed over a predetermined distance at the center in the longitudinal direction of the side edges of one and the other side. Is called.

  Next, in the extending step P31, as in the extending step P21 shown in FIG. 31, the outer sheet 66 and the inner sheet 68 which are overlapped with each other and the partial edge portions E1 are welded to each other by the side edge portion fixing step P30. In a state where the two end portions in the longitudinal direction coincide with each other, they are sandwiched and fixed in the thickness direction by a pair of longitudinal fixtures 72, respectively. Further, the intermediate portion in the longitudinal direction between the outer sheet 66 and the inner sheet 68, that is, the entire width direction including the welded portion F <b> 1 at the partial side edge is sandwiched and fixed by the intermediate fixing tool 112 in the thickness direction. FIG. 37 shows a state before such stretching. Next, the pair of fixtures 72 are moved in the direction indicated by the arrows and separated from each other, so that the outer sheet 66 is stretched until there is no looseness in the longitudinal direction.

Subsequently, the side edge fixing step P32, the edge fixing step P33, and the cutting step P34 are performed in the same manner as the side edge fixing step P22, the edge fixing step P23, and the cutting step P24 described above. The expansion bag 110 is obtained.

  According to the manufacturing process of the inflatable bag 110 of the present embodiment, the inner sheet 68 has a shorter longitudinal dimension than the outer sheet 66 and becomes a cylindrical shape or a partial cylindrical shape bent in the longitudinal direction in a free state. In addition to the same effects as those of the first, second, and third embodiments, the side edge that welds the welded portion F1 of the partial side edge of the outer sheet 66 and the inner sheet 68 to each other prior to P31 during the stretching process. Since the partial portion fixing step P30 is provided, there is an advantage that a flat portion having a dimension corresponding to the welded portion F1 of the partial side edge portion is formed in the intermediate portion in the longitudinal direction of the manufactured expansion bag 110. .

  As mentioned above, although one Example of this invention was described in detail with reference to drawings, this invention is not limited to this Example, It can implement in another aspect.

  For example, in the first and second embodiments, the end edge fixing step P1 (P11) is performed prior to the side edge fixing step P3 (P13). In the third embodiment, the end edge fixing step P22 is performed after the side edge fixing step P22. Although the edge fixing step P23 has been performed, the present invention is not limited to this, and the side edge fixing and the end edge fixing may be performed simultaneously in the same process.

  Further, the outer sheet 66 and the inner sheet 68 are fixed to each other by high-frequency welding. However, the outer sheet 66 and the inner sheet 68 are not limited to high-frequency welding, and may be fixed to each other by other welding such as ultrasonic welding or bonding. Good.

  Further, the outer peripheral side cloth 46 and the inner peripheral side cloth 48 are made of synthetic resin fiber woven cloth, but are not limited to this, for example, woven cloth, non-woven cloth, or poly It may be made of a synthetic resin sheet such as a vinyl chloride sheet or a nylon sheet.

  In the first to fourth embodiments, the length W2 of the inner sheet 68 is set to be smaller than the length W1 of the outer sheet 66 before the inner sheet 68 and the outer sheet 66 are fixed to each other. The width of the inner sheet 68 is set to be larger than that of the outer sheet 66, but the dimensions of each sheet are not necessarily set as described above. For example, before the inner sheet 68 and the outer sheet 66 are fixed to each other, the length and width of the inner sheet 68 and the outer sheet 66 may be set to be the same. In short, in a state where the inner sheet 68 and the outer sheet 66 are fixed to each other, the inner sheet 68 has a longitudinal dimension shorter than that of the outer sheet 66 in the longitudinal direction, and the outer sheet in the central portion in the longitudinal direction. What is necessary is just to have a width dimension longer than 66.

  In the fourth embodiment shown in FIGS. 35 to 38 described above, the outer sheet 66 and the inner sheet 68 are welded to each other at the welded portion F1 located at the center in the longitudinal direction. However, it does not necessarily have to be the central portion, and may not necessarily be one place but a plurality of places.

  Moreover, the sticking prevention sheet 64 and the border cloth 50 are not necessarily required.

  Moreover, the compression band provided with the expansion bags 26, 90, and 100 is not limited to the automatic blood pressure measurement device 14, but may be used for other known blood pressure measurement devices.

  It should be noted that the above description is merely an embodiment, and other examples are not illustrated. However, the present invention is implemented in variously modified and improved modes based on the knowledge of those skilled in the art without departing from the gist of the present invention. Can do.

10: Upper arm (part of living body)
12: Compression band (pressure band for blood pressure measurement)
26, 90, 100, 110: Inflatable bag (inflatable bag for blood pressure measurement)
46: Outer peripheral fabric 48: Inner peripheral fabric 52, 94: Wound fabric 66: Outer sheet 68: Inner sheets P1, P11, P23: Edge fixing step P3, P13, P22: Side edge fixing step

Claims (3)

Longitudinal expansion for blood pressure measurement comprising a flat outer sheet and an inner sheet that are provided in a pressure band for blood pressure measurement that is wound around a part of a living body when blood pressure is measured, and the peripheral edges are fixed to each other in a stacked state. A method for manufacturing a bag, comprising:
A side edge fixing step of fixing the side edge of the inner sheet and the side edge of the outer sheet to each other in a state where the inner sheet is stretched in the longitudinal direction;
Prior to the side edge fixing step, an edge for fixing the edge of the inner sheet and the edge of the outer sheet to each other during the side edge fixing step or after the side edge fixing step. A method for producing an inflatable bag for blood pressure measurement, comprising: an edge fixing step A blood pressure measurement compression band comprising a longitudinal blood pressure measurement inflatable bag composed of a flat outer sheet and an inner sheet, the peripheral portions of which are stacked on top of each other, and wound around a part of a living body during blood pressure measurement Because
The pressure band for blood pressure measurement, wherein the inner sheet has a longitudinal dimension shorter than that of the outer sheet in the longitudinal direction and a width dimension longer than that of the outer sheet at a central portion in the longitudinal direction. The blood pressure measurement inflatable bag is housed, and includes a longitudinal wrapping cloth composed of an outer peripheral side cloth and an inner peripheral side cloth, the peripheral part of which is fixed in a state of being overlapped with each other,
The pressure band for blood pressure measurement according to claim 2, wherein the inner peripheral fabric has a longitudinal dimension shorter than that of the outer peripheral fabric in the longitudinal direction.

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