JP6751462B1 - Blood pressure cuff - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cuff for a sphygmomanometer capable of reducing the occurrence of holes at the edge of a fluid bag along a winding direction around a subject. SOLUTION: A cuff for a sphygmomanometer (arm band 1) has a band-shaped cover 20 in which a wrapping direction P wound around a subject is longer than a width direction D, and an elastic wrapping direction housed in the cover 20. A core material 30 curved in P, and a fluid bag (air bag 40) housed in the cover 20 and arranged on the inner peripheral side of the core material 30 to expand by supplying a fluid and contract by discharging the fluid. A partition sheet 10 joined to the cover 20 for partitioning the core material 30 and the fluid bag (air bag 40) is provided, and the partition sheet 10 is provided with a notch 15 at the edge in the width direction D. [Selection diagram] Fig. 3

Description

The present invention relates to a sphygmomanometer cuff used in a sphygmomanometer wound around a subject to measure blood pressure.

2. Description of the Related Art Conventionally, there has been known a blood pressure monitor cuff in which a partition sheet is provided between an elastic core material and an air bag (see, for example, Patent Document 1).

In Patent Document 1, in a state in which the armband cover is wrapped around the arm, a front cloth arranged on the outer peripheral side, a back cloth arranged on the inner peripheral side and contacting the arm, and a front cloth and a back cloth Disclosed is a configuration including a partition cloth arranged between them, a core material housed between the front cloth and the partition cloth, and an air bag housed between the back cloth and the partition cloth. As a result, the partition cloth receives the circumferential edge of the elastic core material from protruding toward the inner circumference side, and prevents the back cloth from being deformed.

Japanese Unexamined Patent Publication No. 2019-5561

However, in the configuration described in Patent Document 1, although the peripheral length of the partition cloth arranged on the inner peripheral side is shorter than the peripheral length of the outer cloth arranged on the outer peripheral side, the partition cloth and the outer cloth are Since they are joined together, the partition cloth on the inner peripheral side hangs in a rolled state, and wrinkles protruding inward are likely to occur over the entire width direction. Therefore, the folds of the partition sheet push the folds of the air bag over the entire area in the width direction, and the folds project toward the inner circumference.

Then, in the air bag, a fold formed on the edge in the width direction over the entire area in the winding direction and projecting toward the inner circumference overlaps a fold formed over the entire area in the width direction. Corners are formed. Since a strong load is generated in this corner, there is a problem in that a hole may be opened in the corner portion after long-term use.

Therefore, an object of the present invention is to provide a cuff for a sphygmomanometer that can reduce the occurrence of holes at the edge of the fluid bag along the winding direction around the subject.

In order to achieve the above-mentioned object, the cuff for a sphygmomanometer of the present invention is a strip-shaped cover whose winding direction is long with respect to the width direction and which is wrapped around a subject, and which is elastic and accommodated in the cover. A curved core material, a fluid bag that is housed in the cover, is disposed on the inner peripheral side of the core material, and expands when a fluid is supplied and contracts when the fluid is discharged, the core material and the fluid bag And a partition sheet joined to the cover, wherein the partition sheet has a notch at the edge in the width direction, and the partition sheet is an end piece provided at both ends in the winding direction. And a small width portion extending from the base end of the end piece in the winding direction and narrower than the width of the end piece, the end piece being joined to the cover .

The sphygmomanometer cuff of the present invention thus configured can reduce the occurrence of holes at the edge of the fluid bag along the winding direction around the subject.

FIG. 3 is a schematic diagram showing a state in which the armband for the blood pressure monitor of Example 1 is wrapped around the arm of the subject. FIG. 3 is a perspective view showing a state in which the armband according to the first embodiment is rolled in the winding direction. FIG. 3 is an exploded perspective view showing a state in which the arm bands of Example 1 are flattened. FIG. 3 is a cross-sectional view showing an arm band according to the first embodiment. 3 is a perspective view showing a core material of Example 1. FIG. 5 is a plan view showing a partition sheet of Example 1. FIG. FIG. 6 is a diagram illustrating a method of manufacturing the armband according to the first embodiment. FIG. 6 is a diagram illustrating a method of manufacturing the armband according to the first embodiment. It is a figure explaining the effect|action of the armband of Example 1, and is a figure which abbreviate|omits an air bag and shows an armband. FIG. 6 is a diagram illustrating the operation of the arm band according to the first embodiment. It is a figure explaining the effect|action of the armband of a comparative example, and is a figure which omits an air bag and shows an armband. It is a figure explaining the effect|action of the armband of a comparative example. It is a top view which shows the partition sheet of another Example.

Hereinafter, an embodiment that realizes a cuff for a blood pressure monitor according to the present invention will be described based on Example 1 shown in the drawings.

The sphygmomanometer cuff according to the first embodiment is applied to an arm band of a sphygmomanometer that measures blood pressure by wrapping it around an arm as a subject.

[Structure of armband]
FIG. 1 is a schematic diagram showing a state in which an armband for a blood pressure monitor of Example 1 is wrapped around an arm of a subject. FIG. 2 is a perspective view showing a state in which the armband according to the first embodiment is rolled in the winding direction. FIG. 3 is an exploded perspective view showing a state in which the arm band according to the first embodiment is flattened. FIG. 4 is a sectional view showing the arm band of the first embodiment. FIG. 5 is a perspective view showing the core material of the first embodiment. Hereinafter, the configuration of the armband according to the first embodiment will be described with reference to FIGS. 1 to 5.

The armband 1 is wrapped around an arm M as a subject of a subject as shown in FIG. As shown in FIGS. 2 and 3, the arm band 1 includes a cover 20 formed in a band shape in which the winding direction P is longer than the width direction D, a core member 30 housed inside the cover 20, and the cover 20. An air bladder 40 as a fluid bladder housed inside and a partition sheet 10 for partitioning between the core material 30 and the air bladder 40 are provided.

As shown in FIGS. 3 and 4, the cover 20 includes a front cloth 21 arranged on the outer peripheral side while being wound around the arm M, and a back cloth 22 arranged on the inner peripheral side and contacting the arm M. ..

The outer cloth 21 may be a polyester cloth, for example. The outer cloth 21 includes a first outer cloth 21a and a second outer cloth 21b. The first outer cloth 21a and the second outer cloth 21b are formed in a band shape. One end of the first outer cloth 21a in the winding direction P and the other end of the second outer cloth 21b in the winding direction P are sewn together to form one outer cloth 21.

The backing cloth 22 can be, for example, nylon cloth. The backing cloth 22 is composed of a first backing cloth 22a and a second backing cloth 22b. The first back cloth 22a and the second back cloth 22b are formed in a band shape.

As shown in FIG. 2, a loop-shaped female surface fastener 27 is formed on the entire surface of the second backing cloth 22b of the backing cloth 22. A hook-shaped male surface fastener 26 is formed on the first outer cloth 21 a of the outer cloth 21.

The partition sheet 10 can be made of polyester or polyvinyl chloride (PVC), for example. The partition sheet 10 is arranged between the front cloth 21 and the back cloth 22 as shown in FIG. The partition sheet 10 is provided in substantially the same range as the first back cloth 22a. The front cloth 21, the partition sheet 10, and the back cloth 22 are sewn (an example of joining) via the end member 23 over the entire circumference. As a result, pocket-shaped accommodation portions are formed between the partition sheet 10 and the first front cloth 21a and between the partition sheet 10 and the first back cloth 22a.

The core material 30 is formed of an elastic plate material made of polypropylene (PP), for example. The core material 30 is formed in a rectangular plate shape slightly smaller than the first back cloth 22a. As shown in FIG. 5, the core material 30 is formed in a substantially cylindrical shape in which a plate material is curved in the winding direction P. As shown in FIGS. 3 and 4, the core material 30 is housed between the first outer cloth 21 a and the partition sheet 10.

Since the core material 30 is housed inside the cover 20, the armband 1 follows the shape of the substantially cylindrical core material 30 in the range where the core material 30 is housed, as shown in FIG. It becomes rounded. Due to the core material 30, the inner diameter of the arm band 1 in the range rounded into a substantially cylindrical shape is formed thinner than the thickness of the arm M of a general adult.

The air bag 40 is made of polyvinyl chloride (PVC), for example, and is formed in a rectangular bag shape having a two-layer structure in which two bag bodies are stacked. As shown in FIGS. 3 and 4, the air bladder 40 is arranged on the inner peripheral side of the core material 30. The air bag 40 is housed between the first backing cloth 22a and the partition sheet 10. That is, the core material 30 and the air bag 40 are partitioned by the partition sheet 10.

As shown in FIGS. 1 and 2, an air tube 50 is connected to the air bag 40, and by supplying air through the air tube 50, air is supplied to the inside of the air bag 40, and the air bag 40 is Expands. On the other hand, by discharging the air through the air tube 50, the air inside the air bag 40 is discharged and the air bag 40 contracts.

In the contracted state, the air bag 40 is provided, for example, in the same range as the range in which the core material 30 is arranged, as shown in FIG. In the contracted state, the air bag 40 has a fold formed at the edge 41 in the width direction D.

When the arm band 1 configured as described above is mounted on the arm M, the end portion in the winding direction P of the arm band 1 rounded by the core material 30 is opened, and the arm band 1 is wound and mounted on the arm M. At this time, due to the elastic force of the core material 30, a load acts on the arm band 1 so as to press the arm M inward. Then, due to this load, a frictional force is generated between the back cloth 22 and the surface of the arm M in the circumferential direction of the arm M.

Therefore, when the subject wears the rounded portion of the armband 1 on one of his/her own arms M and winds the remaining portion of the armband 1 with the other hand, the portion already worn (armband 1 By the frictional force along the circumferential direction between the arm M) and the arm M, even if the armband 1 is not pressed by one hand, the worn part is prevented from spinning and the examinee himself It is easy to install. Then, with the arm band 1 wrapped around the arm M, the female surface fastener 27 and the male surface fastener 26 are attached to each other, whereby the state where the arm band 1 is wrapped around the arm M is maintained.

[Composition of partition sheet]
FIG. 6 is a plan view showing the partition sheet 10 according to the first embodiment. Hereinafter, the configuration of the partition sheet 10 according to the first embodiment will be described with reference to FIG.

As shown in FIG. 6, the partition sheet 10 has a notch 15 formed by cutting out a rectangular sheet from the edges 14 on both sides in the width direction D near the center in the winding direction P. In other words, the partition sheet 10 is formed from a rectangular sheet so as to have the notches 15 that are notched near the center among the end edges 14 on both sides along the winding direction P. In addition, the notch 15 may be provided in one of the end edges 14 in the width direction D.

The partition sheet includes a first end piece 11 serving as an end piece, a second end piece 12 serving as an end piece, and a small width portion 13 connecting the first end piece 11 and the second end piece 12 by the notch 15. ,,.

The first end piece 11 is provided at one end of the partition sheet 10 in the winding direction P. The second end piece 12 is provided at the other end of the partition sheet 10 in the winding direction P.

The small width portion 13 is formed smaller than the width of the first end piece 11 and the second end piece 12. The small width portion 13 is formed at a substantially central portion of the first end piece 11 and the second end piece 12 in the width direction D, and both ends in the width direction D are formed as notches 15. The narrow portion 13 extends in the winding direction P from the base end 11c of the first end piece 11. The narrow width portion 13 extends in the winding direction P from the base end 12c of the second end piece 12. That is, the narrow portion 13 connects the base end 11c of the first end piece 11 and the base end 12c of the second end piece 12.

The side 11a of the first end piece 11 that is connected to the small width portion 13 is inclined so as to form an obtuse angle with the side corresponding to the edge of the small width portion 13 in the width direction D. The side 12a of the second end piece 12 that is connected to the small width portion 13 is inclined so as to form an obtuse angle with the side corresponding to the edge of the small width portion 13 in the width direction D.

The side portion 13a of the small width portion 13 includes an R-shaped portion 11b that smoothly connects to the side 11a of the first end piece 11 that is connected to the small width portion 13. The side portion 13a of the small width portion 13 includes an R-shaped portion 12b that smoothly connects to the side 12a of the second end piece 12 that is connected to the small width portion 13.

The partition sheet 10 thus configured prevents the back cloth 22 from being deformed when the edge of the core material 30 in the winding direction P projects to the inner peripheral side. That is, since the back cloth 22 is a portion that contacts the arm M, it is formed of a relatively soft material. When the armband 1 is wrapped around the arm M, the rolled shape of the core material 30 is developed against the elastic force of the core material 30, but the core material 30 tries to return to the rolled state by the elastic force.

Therefore, the edge of the core material 30 projects inward in the radial direction. At this time, in the armband without the partition sheet 10, the edge of the core material 30 pushes the backing cloth 22 inward in the radial direction, so the backing cloth 22 made of a soft material is pushed inward in the radial direction and stretches. Will be deformed. However, the armband 1 including the partition sheet 10 prevents the back cloth 22 from being deformed because the partition sheet 10 receives the edge of the core material 30.

The partition sheet 10 is formed of a material that is harder than the backing cloth 22 in order to prevent displacement of the edge of the backing cloth 22 due to the elastic force of the core material 30 and prevent or suppress the expansion of the backing cloth 22.

[Manufacturing method of armband]
7 and 8 are views for explaining the method of manufacturing the armband 1 according to the first embodiment. Hereinafter, the method for manufacturing the partition sheet of Example 1 will be described with reference to FIGS. 7 and 8.

As shown in FIG. 7, with the partition sheet 10 sandwiched between the front cloth 21 and the back cloth 22, the outer peripheral edges of the front cloth 21 and the back cloth 22 are heat-welded, and the end member 23 The outer peripheral edges of the front cloth 21 and the back cloth 22 are sewn together via. A stitch mark S is formed on the outer peripheral edge of the cover 20. As a result, the vicinity of the end edge 14 of the first end piece 11 and the second end piece 12 in the width direction D and the vicinity of the end edge of the second end piece 12 in the winding direction P are also sewn to the front cloth 21 and the back cloth 22. It

Next, as shown in FIG. 8, the air bag 40 is inserted through the opening 24 formed in the overlapping portion of the first backing cloth 22a and the second backing cloth 22b to separate it from the first backing cloth 22a. It is accommodated between the seat 10. Further, the core material 30 elastically deformed from a rounded shape to a substantially flat state is inserted from the opening 24 between the first back cloth 22a and the second back cloth 22b, and the first front cloth 21a and the partition sheet. It is housed between 10 and 10 to produce armband 1. Alternatively, after the air bag 40 and the core member 30 are housed in the cover 20, the first back cloth 22a and the second back cloth 22b may be sewn together to close the opening 24.

[Action of armband]
FIG. 9 is a diagram for explaining the action of the arm band according to the first embodiment, and is a diagram showing the arm band with the air bag omitted. FIG. 10 is a diagram for explaining the action of the arm band according to the first embodiment. FIG. 11: is a figure explaining the effect|action of the armband of a comparative example, and is a figure which omits an air bag and shows an armband. FIG. 12 is a diagram for explaining the action of the arm band of the comparative example. Hereinafter, the operation of the arm band according to the first embodiment will be described with reference to FIGS. 9 to 12.

The sphygmomanometer cuff (arm band 1) of the first embodiment has a band-shaped cover 20 in which the winding direction P wound around the subject (arm M) is longer than the width direction D, and the elasticity accommodated in the cover 20. A fluid bag (air bag) which is arranged in the inner peripheral side of the core material 30 housed in the cover 20 and which is curved in the winding direction P and which is expanded by the supply of the fluid and contracted by the discharge of the fluid. 40) and a partition sheet 10 that is joined to the cover 20 and partitions the core material 30 and the fluid bag (air bag 40). The partition sheet 10 has a notch 15 at the edge 14 in the width direction D. (FIG. 6).

As a result, as shown in FIG. 9, the partition sheet 10 is provided with the wrinkles 10A only in the central portion in the width direction D in the substantially central portion in the winding direction P. Then, as shown in FIG. 10, in the air bag 40, a raised portion 40A raised by the wrinkle 10A of the partition sheet 10 is formed in the central portion in the width direction D. On the other hand, the raised portion 40A is not formed at the end portion of the air bag 40 in the width direction D.

Therefore, in the air bag 40, the fold formed on the end edge 41 in the width direction D formed by crushing the tubular body does not overlap the raised portion 40A formed in the central portion in the width direction D. Can be As a result, it is possible to prevent a large load from being applied to the edge 41 of the air bag 40, and it is possible to prevent a hole from being formed in the edge 41 of the air bag 40.

On the other hand, as shown in FIG. 11, since the partition sheet 910 having no notch 15 arranged on the inner peripheral side and the outer cloth 21 arranged on the outer side are joined at their peripheral edges over the entire length, they are rounded. In this state, the partition sheet 910 arranged on the inner peripheral side has an extra portion due to the difference in the peripheral length between the outer peripheral and the inner peripheral. Due to this extra portion, wrinkles 910B protruding toward the inner peripheral side are generated in the partition sheet 910 over the entire area in the width direction D.

Then, by being pressed by the wrinkles 910B of the partition sheet 910, the air bag 40 also has the fold 40B formed over the entire width direction D. Then, the air bag 40 is provided with a fold formed on the end edge 41 in the width direction D over the entire region in the winding direction P and a fold 40B formed over the entire region in the width direction D. Will be.

By repeatedly contracting and expanding the air bag 40, the portion where the two folds overlap is repeatedly bent, and a great load is applied. Further, since the portion where the core material 30 is arranged is kept in a curled state without wearing the armband 1 on the arm, the air bag 40 is folded at the edge 41 in the width direction D even in the storage state. Remains formed. Therefore, there is a possibility that a hole may be formed in the portion of the air bag 40 where the two folds overlap.

In the blood pressure monitor cuff (armband 1) of the first embodiment, the partition sheet 10 joined to the cover 20 receives the edge of the core material 30 at the end in the winding direction P, so the cover 20 is deformed. Can be prevented.

Further, since the partition sheet 10 has a simple structure in which the notch 15 is provided, the productivity is good.

In the sphygmomanometer cuff (armband 1) of Example 1, the notches 15 were provided on both sides in the width direction D of the partition sheet 10 (FIG. 6 ).

As a result, in the air bag 40, a ridge 40A formed at the central portion in the width direction D is formed at the folds formed on both side edges 41 in the width direction D formed by crushing the tubular body. You can prevent them from overlapping. As a result, it is possible to prevent a large load from being applied to the edge 41 of the air bag 40, and it is possible to prevent a hole from being formed in the edge 41 on both sides of the air bag 40 in the width direction D. it can.

In the sphygmomanometer cuff (armband 1) of the first embodiment, the cover 20 includes an opening 24 for inserting and accommodating the core material 30 and the fluid bag (air bag 40) (FIG. 8 ).

Accordingly, after the cover 20 and the partition sheet 10 are sewn together, the core material 30 and the fluid bag (air bag 40) can be inserted from the opening 24 and housed in the cover 20. Therefore, the sphygmomanometer cuff can be produced in a small number of steps. As a result, the productivity of the blood pressure cuff can be improved.

In the sphygmomanometer cuff (armband 1) of the first embodiment, the partition sheet 10 includes the end pieces (the first end piece 11 and the second end piece 12) provided at the ends in the winding direction P by the notches 15. Is narrower than the width of the end pieces (first end piece 11, second end piece 12) extending in the winding direction P from the base ends 11c, 12c of the end pieces (first end piece 11, second end piece 12). The small width portion 13 is provided with the R-shaped portions 11b and 12b that smoothly connect the small width portion 13 and the end pieces (the first end piece 11 and the second end piece 12) (FIG. 6).

Thereby, the end pieces (the first end piece 11 and the second end piece 12) and the narrow width portion 13 can be connected in a smooth shape. Therefore, when the core material 30 extended from the substantially cylindrical shape is inserted into the cover 20 through the opening 24 and accommodated therein, the tip end of the core material 30 which is pressed by the restoring force to press the surface of the partition sheet 10 has a narrow width portion. It is possible to prevent the connection portion between 13 and the end piece (the first end piece 11, the second end piece 12) from being caught. As a result, the insertability of the core material 30 into the cover 20 can be improved, and the productivity can be improved.

Further, when the core material 30 is inserted into the cover 20 and accommodated therein, the narrow width portion 13 can serve as a guide for guiding the insertion of the core material 30. Therefore, the core material 30 can be stored in the intended place. Specifically, in FIG. 8, the partition sheet 10 inserted in the direction of the arrow from the opening 24 can be easily inserted to the back. Moreover, the strength of the partition sheet 10 can be improved.

In the sphygmomanometer cuff (armband 1) of the first embodiment, the sides 11a and 12a connected to the small width portions 13 of the end pieces (the first end piece 11 and the second end piece 12) form an obtuse angle with the small width portion 13. Inclination to do so (Fig. 6).

Thereby, when the core material 30 is inserted into the cover 20 and accommodated therein, the tip end of the core material 30 is connected to the narrow width portion 13 of the end piece (the first end piece 11 and the second end piece 12). 11a, 12a can be contacted and slid. Therefore, when the core material 30 is inserted into the cover 20 and accommodated therein, the tip of the core material 30 is caught on the side of the end piece (the first end piece 11, the second end piece 12) that is connected to the small width portion 13. It can be prevented. As a result, the insertability of the core material 30 into the cover 20 can be improved, and the productivity can be improved.

The blood pressure monitor cuff of the present invention has been described above based on the first embodiment. However, the specific configuration is not limited to this embodiment, and design changes and additions are allowed without departing from the gist of the invention according to each claim of the claims.

In the first embodiment, an example is shown in which the partition sheet 10 is sandwiched between the front cloth 21 and the back cloth 22 and the peripheral edges are sewn in a stacked state. However, the present invention is not limited to this aspect, and for example, a partition sheet sewn to a back cloth may be sewn to a front cloth.

In the first embodiment, an example in which the air bag 40 has a two-layer structure in which two bag bodies are stacked is shown. However, the air bag may be a single bag or may have a multi-layer structure in which three or more bags are stacked.

In the first embodiment, an example in which the notch 15 is provided in the partition sheet 10 has been shown. However, as shown in FIG. 13, a weakened portion 52, which is softer than the general portion 51, may be provided in the cutout portion 15. As a result, in the partition sheet 10, the wrinkles 10A are formed only in the center portion in the width direction D in the substantially center portion in the winding direction P, or are formed at the end portions in the width direction D of the partition sheet 10. The strength of the wrinkle 10A can be reduced to the extent that the air bag 40 is not punctured. For example, the fragile portion 52 may be one in which a plurality of slits are formed in the end of the rectangular sheet in the width direction D near the center in the winding direction P.

Further, the fragile portion is a state in which a connecting portion for connecting the edge 14 of the first end piece 11 and the edge 14 on the side of the second end piece 12 with a width narrower than the narrow width portion 13 in the winding direction P is left. It may be. Further, the fragile portion may be one in which one or a plurality of intermediate connecting portions that connect the sides 11a and 12a in the winding direction P are left between the connecting portion and the small width portion 13. In other words, it is possible to form an opening in the partition sheet 10 to make it a fragile portion.

In Example 1, the example in which the notch 15 is formed by cutting out the vicinity of the center in the winding direction P among the end edges 14 in the width direction D from the rectangular sheet has been shown. However, the partition sheet 10 is formed by separately forming a portion corresponding to the first end piece 11, the narrow width portion 13, and the second end piece 12 from a rectangular sheet, and ultrasonically welding or sewing these. Good. As a result, the cutout 15 is formed in the partition sheet 10.

In this case, the portion to be ultrasonically welded or sewn is a portion in which the vicinity of the base end 11c of the first end piece 11 and the end of the small width portion 13 on the first end piece 11 side are overlapped in the thickness direction. is there. Further, the portion to be ultrasonically welded or sewn is a portion in which the vicinity of the base end 12c of the second end piece 12 and the vicinity of the end of the small width portion 13 on the second end piece 12 side are overlapped in the thickness direction. ..

In this case, it is preferable to stack the first end piece 11 so as to be closer to the core material 30 than the small width portion 13 on the surface of the partition sheet 10 facing the core material 30. In addition, it is preferable to stack the partition sheet 10 on the surface facing the core material 30 so that the small width portion 13 is closer to the core material 30 than the second end piece 12.

Accordingly, when the core material 30 is inserted through the opening 24, the stepped portion formed in the overlapping portion between the first end piece 11 and the small width portion 13 and the overlapping portion between the second end piece 12 and the small width portion 13 are formed. It is possible to prevent the step portion formed from being caught.

Further, the partition sheet 10 may be formed from a rectangular sheet having a length in the width direction D and the winding direction P longer than that of the partition sheet 10 by using a punching die. Also in this case, the notch 15 is formed in the partition sheet 10.

In the first embodiment, an example in which the notch 15 is provided on both end edges 14 in the width direction D of the partition sheet 10 has been shown. However, the notch 15 may be provided in at least one of the width direction D of the partition sheet 10. For example, when a hole is formed only in one edge of the air bag 40 in the width direction D, the notch 15 may be provided in only one edge. This is the same when the notch 15 is a weak portion.

In the first embodiment, the example in which the opening 24 is formed in the overlapping portion of the first back cloth 22a and the second back cloth 22b has been shown. However, the opening may be provided at the tip opposite to the opening 24 in the winding direction P of the first backing cloth 22a.

In Example 1, an example in which the core material 30 is made of polypropylene (PP) was shown. However, the core material may be made of metal, for example, as long as it has elasticity to restore the original substantially cylindrical shape when the load is removed even if a load is applied to open the substantially cylindrical shape into a flat plate shape. ..

In the first embodiment, an example in which the fluid bag is the air bag 40 has been shown. However, the fluid bag is not limited to this mode and may be a bag into which the liquid flows.

In the first embodiment, an example in which the present invention is applied to a sphygmomanometer worn on the arm as a subject is shown. However, the present invention can also be applied to a blood pressure monitor worn on the wrist as a subject.

1 Armband (an example of a cuff for a blood pressure monitor)
10 Partition Sheet 11 First End Piece (Example of End Piece)
11b R-shaped portion 12 Second end piece (an example of end piece)
12b R-shaped portion 13 Small width portion 15 Notch 20 Cover 24 Opening 30 Core material 40 Air bag (one example of fluid bag)
D width direction P winding direction

Claims (6)

A strip-shaped cover in which the winding direction wrapped around the subject is longer than the width direction,
A core material that is housed in the cover, has elasticity, and is curved in the winding direction,
A fluid bag that is housed in the cover, is disposed on the inner peripheral side of the core member, and expands when a fluid is supplied and contracts when the fluid is discharged,
A partition sheet joined to the cover, for partitioning the core material and the fluid bag,
The partition sheet has a notch on the edge in the width direction ,
The partition sheet comprises end pieces provided at both ends in the winding direction, and extending from the base end of the end piece in the winding direction, a narrow width portion narrower than the width of the end piece,
The cuff for a sphygmomanometer , wherein the end piece is joined to the cover . The cuff for a sphygmomanometer according to claim 1, wherein the notches are provided on both sides of the partition sheet in the width direction. The sphygmomanometer cuff according to claim 1 or 2, wherein the cover has an opening for inserting and accommodating the core material and the fluid bag. The partition sheet has a front SL narrow portions, characterized in that it comprises an R-shaped portion which smoothly connects, and said end piece, a blood pressure monitor cuff according to any one of claims 1-3. Edges connecting to the small width portion of said end piece, characterized in that inclined with respect to the width direction of the small width portion, a blood pressure monitor cuff according to any one of claims 1-4. A strip-shaped cover in which the winding direction wrapped around the subject is longer than the width direction,
A core material that is housed in the cover, has elasticity, and is curved in the winding direction,
A fluid bag that is housed in the cover, is disposed on the inner peripheral side of the core member, and expands when a fluid is supplied and contracts when the fluid is discharged,
A partition sheet joined to the cover, for partitioning the core material and the fluid bag,
The partition sheet has a fragile portion, which is weaker than a general portion, on the edge in the width direction ,
The partition sheet comprises end pieces provided at both ends in the winding direction, and extending from the base end of the end piece in the winding direction, a narrow width portion narrower than the width of the end piece,
The cuff for a sphygmomanometer , wherein the end piece is joined to the cover .