JP2022149638A - Cuff for sphygmomanometer - Google Patents

Abstract

To provide a cuff for sphygmomanometers for storing a core material and being easily fittable to a subject.SOLUTION: A cuff 10 for sphygmomanometers comprises a belt-like cover 11, where a winding direction P being wound around a subject (A) is long in the width direction Dw, and a core material 20 stored in the cover 11, having elasticity and being curved in the winding direction P. The core material 20 includes a core material body part 21 enclosing the subject in the winding direction P, and a guide part 22 extending from one end 21b in the winding direction, of the core material body 21 in the direction away from the core material body part 21. The guide part 22 is so configured that at least a portion near the one end has elasticity weaker than that of the core material body part and extends outward of one end (21D) of the core material body 21 in a tangential direction Dt at the one end 21b with respect to the curve of the core material part 21.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to a sphygmomanometer cuff.

Some sphygmomanometers include a sphygmomanometer cuff (also referred to as a sphygmomanometer cuff) that is wrapped around a subject such as an arm, wrist, or finger when blood pressure is measured. The sphygmomanometer arm cuff is attached to the subject in order to appropriately press the subject with the swelling of the air bag contained therein.

A sphygmomanometer arm cuff is known to contain an elastic core material in order to assist winding around the subject (see, for example, Patent Literature 1). This sphygmomanometer cuff makes it easy to wrap around the subject (the operation of doing so) by utilizing the fact that the core material fits around the subject due to its own elastic force.

Japanese Patent No. 3740985

In the sphygmomanometer cuff described above, the core material is curved in a cylindrical shape so that it can be restored to the state in which it is wrapped around the subject. should be widened. For this reason, the sphygmomanometer arm cuff described above has a shape in which one end in the winding direction of the core material is positioned outside the other end (in the direction away from the center of the cylinder), and the one end is hooked on the subject. By pressing against the subject, the core material can be easily fitted to the subject.

Here, the sphygmomanometer cuff described above can be held by the non-dominant hand, for example, or worn on the upper arm by bending the arm on the holding side into an L shape. As described above, the way of holding the sphygmomanometer cuff is not constant, and the manner in which the subject wears it is also not constant. For this reason, depending on how the blood pressure monitor cuff is held and the subject's body part, one end of the core material may hit the surface of the wearing site at a position or angle that makes it difficult to spread. It may not be easy to increase the spacing between

The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a sphygmomanometer cuff that accommodates a core material and can be easily fitted to a subject.

A sphygmomanometer cuff according to the present disclosure includes: a band-shaped cover that is wound around a subject and whose winding direction is long with respect to the width direction; a core material that is housed in the cover and has elasticity and is curved in the winding direction; wherein the core material includes: a core material main body portion surrounding the subject in the winding direction; and a guide portion extending from one end of the core material main body portion in the winding direction in a direction away from the core material main body portion. , and the guide portion has an elastic force weaker than that of the core material body portion at least in the vicinity of the one end, and the core material is It is characterized by extending to the outside from the end of the main body.

According to the sphygmomanometer cuff of the present disclosure, the cuff accommodates the core material and can be easily fitted to the subject.

FIG. 2 is a schematic diagram showing how a sphygmomanometer cuff as an embodiment according to the present disclosure is wrapped around a person's arm (subject). 2 is a cross-sectional view taken along line II shown in FIG. 1; FIG. It is a perspective view which shows the cuff for sphygmomanometers. FIG. 4 is a perspective view showing a core material of the sphygmomanometer cuff as viewed from the guide portion side. It is a perspective view which shows a mode that the core material was seen from the upper end position diagonally. It is an end elevation which shows a mode that the core material was seen from the width direction. FIG. 4 is a perspective view showing a state in which a core material is inserted into the sphygmomanometer cuff of FIG. 3 ; FIG. 11 is an explanatory diagram showing how the core material approaches the arm; FIG. 10 is an explanatory diagram showing a state in which the guide part is applied to the arm; FIG. 10 is an end view showing a state in which the core material in the same scene as in FIG. 9 is seen from the width direction; FIG. 11 is an end view showing a state in which the right side (the other end side) of the core material (the core material main body) is held and the core material is being opened from the scene of FIG. 10 ; FIG. 11 is an end view showing a state in which the core material is pressed against the arm from the scene of FIG. 10; FIG. 11 is an end view showing a state in which the core material is fitted to the arm; FIG. 11 is an explanatory diagram showing a state in which the core material is approached while being tilted with respect to the arm; FIG. 10 is a perspective view showing a core material of another example as viewed from the guide portion side;

Hereinafter, Example 1 of the sphygmomanometer cuff 10 as an example of the sphygmomanometer cuff according to the present disclosure will be described with reference to the drawings. 8 to 14 show the arm A in a simplified manner in order to facilitate understanding of the action of the core material 20 on the arm A. As shown in FIG.

A sphygmomanometer cuff 10 of Example 1 according to one embodiment of the sphygmomanometer cuff according to the present disclosure will be described with reference to FIGS. 1 to 15 . The sphygmomanometer cuff 10 of Example 1 is used as a cuff for a sphygmomanometer that is wrapped around an arm A as a subject to measure blood pressure. Below, in the sphygmomanometer cuff 10, the direction in which the arm A is wrapped (the circumferential direction of the arm A in the wrapped state) is defined as the wrapping direction P, and the direction orthogonal thereto (along the arm A in the wrapped state) direction) is the width direction Dw. In addition, in the sphygmomanometer arm cuff 10, the palm of the arm A to be wrapped is directed upward (upper in the vertical direction), and the vertical direction when it is properly attached to the arm A is set. A direction Dv is defined as a direction Dv, and a direction perpendicular to the vertical direction Dv and the width direction Dw is defined as a horizontal direction Dh.

[Composition of the cuff]
As shown in FIG. 1, the sphygmomanometer cuff 10 is wrapped around an arm A of a subject as a subject. The sphygmomanometer cuff 10 is constructed by housing an air bag 12 and a core material 20 in a cover 11, as shown in FIG.

As shown in FIGS. 1 to 3, the cover 11 is shaped like a belt whose winding direction P is longer than the width direction Dw, and has a front cloth 13 and a back cloth 14 (see FIG. 2). The front cloth 13 is wound around the arm A and arranged on the outer peripheral side, and the back cloth 14 is wound around the arm A and arranged on the inner peripheral side. The front cloth 13 and the back cloth 14 are made of flexible material such as cloth or resin, and are joined along the entire periphery. Thus, the cover 11 has a housing space 15 formed between the outer cloth 13 and the lining cloth 14 for housing the air bag 12 and the core material 20 .

The cover 11 has a partition cloth 16 provided in the accommodation space 15 . The partition cloth 16 divides the storage space 15 into the outer side, that is, the front cloth 13 side, and the inner side, that is, the back cloth 14 side. Therefore, the storage space 15 is divided into an outer storage portion 15a positioned between the front cloth 13 and the partition cloth 16 and an inner storage portion 15b positioned between the lining cloth 14 and the partition cloth 16. It is The housing space 15 houses the core material 20 in the outer housing portion 15a and the air bag 12 in the inner housing portion 15b.

The cover 11 is provided with a female hook-and-loop fastener 17 and a male hook-and-loop fastener 18, as shown in FIG. The female hook-and-loop fastener 17 is configured such that loop-shaped raised bristles are provided on the entire surface of the lining cloth 14 other than the curled range (the left end side when viewed from the front in FIG. 3). The male hook-and-loop fastener 18 is configured such that hook-shaped naps are provided on part of the rounded range of the outer cloth 13 . The female hook-and-loop fastener 17 and the male hook-and-loop fastener 18 are attached to each other when the sphygmomanometer cuff 10 is wrapped around the arm A and pressed against the loop-shaped bristles and the hook-shaped bristles. As a result, the state in which the sphygmomanometer cuff 10 is wrapped around the arm A is maintained.

As shown in FIG. 2, the air bag 12 is made of, for example, polyvinyl chloride (PVC) and has a two-layered rectangular bag shape in which two bag bodies are stacked. The air bag 12 is connected to an air tube 19 (see FIGS. 1, 3, etc.) and is supplied with air through the air tube 19, so that the air is supplied to the inside of the air bag 12 and inflated. In addition, the air bag 12 is contracted by discharging the internal air through the air tube 19 .

[Configuration of core material]
The core material 20 is formed of, for example, an elastic plate material made of polypropylene (PP), and has a core body portion 21 and a guide portion 22 as shown in FIGS. 4 to 6 . The core material main body 21 is a part that is fitted around the arm A so as to be wrapped around by its own elastic force in order to facilitate winding (operation) of the sphygmomanometer cuff 10 around the arm A. As shown in FIG. The core material main body 21 has a substantially rectangular thin plate shape and is curved into a substantially cylindrical shape. Even if a load is applied to the core material main body 21 to open the substantially cylindrical shape into a flat plate shape, the core material main body 21 is restored to the original substantially cylindrical shape when the load is removed. The curvature of the core material main body 21 is set from the viewpoint of assisting the winding around the arm A as a subject. The core material main body 21 of the first embodiment is arranged so that the inner diameter of the cover 11 (blood pressure monitor cuff 10) is thinner than the thickness of the arm A of a general adult in the state of being housed in the outer housing portion 15a of the cover 11. is curved.

The core material main body 21 has notches 23 provided at four corners 21a. The four corners 21a are located at the corners of the substantially rectangular core material main body 21, and two edges located in the winding direction P (hereinafter, one is referred to as one end 21b and the other is referred to as the other end 21c). ) in the width direction Dw. Each notch portion 23 has the same size in the first embodiment, and the corresponding corner portion 21a is cut into an L-shape by two sides substantially parallel to the outline of the core body portion 21. It has a missing shape.

Each notch portion 23 of Example 1 has rounded corners formed when notching. Specifically, since each notch portion 23 has a notched shape as described above, it has two convex corner portions 23a and one concave corner portion 23b. The parts (23a, 23b) are rounded.

The core material main body 21 is provided with four cutouts 23, so that the central portion in the winding direction P becomes a wide portion 24 having a relatively large dimension in the width direction Dw, and both edges in the winding direction P (one end 21b , and the vicinity of the other end 21c) is a narrow portion 25 having a relatively small dimension in the width direction Dw. The two narrow portions 25 are positioned at the center in the width direction Dw and protrude in the winding direction P from the wide portion 24 .

In addition, the core body portion 21 has an air hole 26 . The air hole 26 is for supplying air to the air bag 12 and for discharging air from the air bag 12 , and penetrates the core body 21 . Here, in the housing space 15, the cover 11 houses the core material 20 in the outer housing portion 15a and houses the air bag 12 in the inner housing portion 15b. The positional relationship is such that the bag 12 is covered. Therefore, the air hole 26 can be made to communicate with the air tube 19 and the air bag 12, and the air in the air bag 12 can be supplied and discharged. The air bag 12 of Example 1 has an air tube 19 attached to the central position in the winding direction P. As shown in FIG.

The air hole 26 of Example 1 is provided at the upper end position 21U of the core body portion 21 . The upper end position 21U is a position opposed to the upper end of the arm A to be wrapped in the wrapping direction P with the palm of the arm A to be wrapped facing upward (upper side in the vertical direction). Therefore, the air bag 12 is inflated toward both sides in the winding direction P centered between the upper end of the arm A and the upper end position 21U. can be pressed.

Further, the core material body portion 21 has a return portion 27 at the other end 21c. The folded portion 27 is formed by folding outward from the other end 21c, and is provided over the entire area of the other end 21c in the width direction Dw. The return portion 27 forms an inclined surface 27a inclined so as to face radially outward from the center of curvature C, which is the center of curvature of the core body portion 21 . Since the inclined surface 27a is inclined in such a manner, when the core body 21 is applied to the arm A, both edges (one end 21b, the other end 21c) of the core body 21 are opened. A force component is generated in the direction of pulling (see FIG. 12).

The guide portion 22 is a portion that guides the position and moving direction of the core body portion 21 with respect to the arm A so that the core body portion 21 can be easily fitted to the arm A. As shown in FIG. The guide portion 22 has a substantially rectangular thin plate shape and a flat plate shape along a substantially flat surface. In Example 1, the guide portion 22 extends from the central position of the narrow portion 25 in the width direction Dw, and has a smaller dimension in the width direction Dw than the narrow portion 25 of the core body portion 21 . Therefore, even if the guide portion 22 is integrally formed with the core body portion 21 from the same member, the elastic force of the guide portion 22 is weaker than that of the core body portion 21, that is, the guide portion 22 is made to bend more easily than the core body portion 21. ing.

The guide portion 22 protrudes from one end 21 b of the core body portion 21 along the tangential direction Dt of the core body portion 21 . The tangential direction Dt is centered on the center of curvature C at the base of the guide portion 22 (one end 21b of the core body portion 21 (narrow portion 25)) on a plane perpendicular to the center of curvature C (see FIG. 6). along a tangent to a circle. Thus, the guide portion 22 extends in a direction away from the core body portion 21 so as to gradually widen the distance from the one end 21 b of the core body portion 21 to the core body portion 21 .

The guide portion 22 has two rounded corners at a tip 22a that serves as a projecting end. Specifically, since the guide portion 22 is substantially rectangular, the tip 22a has two convex corners. ing.

The guide portion 22 extends outside the end portion of the core body portion 21 on a plane orthogonal to the center of curvature C when viewed in the tangential direction Dt. Specifically, in the state where the upper end position 21U is positioned upward, the guide portion 22 positions the tip 22a at least below the lower end position 21D in the tangential direction Dt. The lower end position 21D is a position facing the upper end position 21U with the center of curvature C of the core body 21 interposed therebetween when viewed on a plane perpendicular to the center of curvature C. As shown in FIG. Therefore, a straight line connecting the upper end position 21U, the center of curvature C, and the lower end position 21D is parallel to the vertical direction Dv. The tip 22a is positioned below the lower end reference plane Pr so as to intersect with the reference plane Pr. Therefore, the lower end position 21D is the end of the core body 21 in the tangential direction Dt at the one end 21b.

The guide portion 22 of Example 1 extends to a position where it intersects the tilt limit line SL (see FIG. 14). As will be described later, when the sphygmomanometer cuff 10 is wrapped around the arm A, the inclination limit line SL is formed by providing the notch 23 in the core main body 21 . This line indicates the limit to which the main body 21 can be tilted. The inclination limit line SL connects the two convex corner portions 23a at the notch portion 23 when the core body portion 21 is viewed in the left-right direction Dh. The guide portion 22 intersects the tilt limit line SL when viewed in the left-right direction Dh, and the tip 22a is positioned below the tilt limit line SL.

The core material 20 configured in this way is housed in the outer housing portion 15a of the housing space 15, so that it becomes part of the sphygmomanometer cuff 10 (on the left end side when viewed from the front), as shown in FIG. is rounded. Thereby, the core material 20 assists in wrapping the blood pressure monitor cuff 10 around the arm A. As shown in FIG.

[Action of cuff]
Next, how the sphygmomanometer cuff 10 is wrapped around the arm A will be described. The subject opens both ends (one end 21b and the other end 21c of the core 20) of the sphygmomanometer cuff 10 curled by the core material 20 in the winding direction P, and opens the sphygmomanometer cuff 10 so that the cuff 10 is rolled up. is attached to arm A. Then, the sphygmomanometer cuff 10 applies a load so as to press the arm A inward due to the elastic force of the core material 20, so that the circumference of the arm A is held between the lining cloth 14 and the surface of the arm A. produce a frictional force in the direction

As a result, with the sphygmomanometer cuff 10 attached to the arm A at the rounded portion, when the rest of the sphygmomanometer cuff 10 is wrapped around the arm A, the sphygmomanometer cuff 10 is Rotation (idling) can be prevented. The sphygmomanometer cuff 10 is wrapped around the arm A by attaching the female hook-and-loop fastener 17 provided in the remaining portion to the male hook-and-loop fastener 18 in the rounded portion. maintain the state. After that, when air is supplied through the air tube 19 and the air bag 12 is inflated, the sphygmomanometer cuff 10 presses the air bag 12 from the outside, thereby appropriately compressing the arm A due to the expansion. and

[Action of core material]
Next, the action of the core member 20 when the sphygmomanometer cuff 10 is worn on the arm A will be described with reference to FIGS. 8 to 14. FIG. 8 to 14 omit members other than the core 20 in the sphygmomanometer cuff 10 in order to facilitate understanding of the action of the core 20 on the arm A within the cover 11. Only the core 20 and arm A are shown. In the sphygmomanometer cuff 10, since the core 20 is housed in the cover 11, the core 20 comes into contact with the arm A through the cover 11. In order to facilitate understanding of the action on the arm A and to prevent roundabout expressions, the description will omit the fact that the cover 11 is interposed.

As shown in FIGS. 8 and 9, the core material 20 holds the arm A between both edges (one end 21b and the other end 21c) of the core body 21 when the sphygmomanometer cuff 10 is wrapped around the arm A. Arm A is approached as if pushing in. At this time, the core member 20 is provided with a guide portion 22 projecting downward from one end 21b of the core member main body portion 21, and the guide portion 22 extends to the outside of the core member main body portion 21. It is easy to apply the guide portion 22 to the arm A when approaching (see FIGS. 9 and 10). Then, the subject brings the core material body 21 closer to the arm A while the guide part 22 is placed on the arm A, so that the one end 21b and the other end 21c of the core material body 21 are separated. can be brought close to the arm A.

After that, while the guide part 22 is applied to the arm A, the subject holds the right side (the other end 21c side) of the core material 20 (the core material main body part 21) as viewed from the front in FIG. The right side of the core material main body 21 is moved with respect to the arm A in the direction in which the one end 21b and the other end 21c are opened by pulling the arm. Then, as shown in FIG. 11, since the guide portion 22 of the core member 20 is applied to the arm A, the movement of the guide portion 22 and the one end 21b of the core member 20 with respect to the arm A is prevented. , and the other end 21c moves away from the one end 21b. For this reason, the guide portion 22 has a position guide function to position the arm A between the one end 21b and the other end 21c of the curved core material body portion 21, which is a gap.

Then, as shown in FIG. 12, the subject moves the core material main body 21 until the one end 21b and the other end 21c are separated from each other beyond a predetermined distance, thereby causing the inclination of the return portion 27 of the other end 21c. It is assumed that the surface 27a hits the arm A. Thereafter, the subject moves the core body 21 toward the arm A (downward when viewed from the front in FIG. 12) so that the inclined surface 27a of the core body 21 hits the arm A. A component force of the force of movement is generated. As a result, one end 21b of the core body 21 is prevented from moving relative to the arm A by the guide portion 22, and the other end 21c is moved away from the one end 21b by the component force of the inclined surface 27a acting on the other end 21c. are widened on both edges. For this reason, the guide portion 22 has a movement guide action of moving in a direction that assists in expanding the space between the one end 21b and the other end 21c when fitting the core body portion 21 to the arm A. As shown in FIG. After that, the subject brings the core material body 21 closer to the arm A, and as shown in FIG. The core body portion 21 can be fitted.

Then, the core material 20 is attached to the arm A with the upper end position 21U positioned upward. Therefore, if the arm A to which the core material 20 is wrapped is in a state in which the palm faces upward (upper side in the vertical direction), the upper end position 21U of the core material 20 can be positioned near the artery of the arm A. . In the sphygmomanometer cuff 10 of the first embodiment, the air hole 26 is provided at the upper end position 21U, and the air tube 19 passed through the air hole 26 is attached to the central position of the air bag 12 in the winding direction P. The location can be located near the arm A artery. Then, the sphygmomanometer cuff 10 can compress the artery at the central position of the air bag 12 in the winding direction P, and can eliminate the directivity of the compression direction (compression strength) of compressing the artery. The effects of directional variations in arterial compression from measurement to measurement can be eliminated. As a result, the sphygmomanometer cuff 10 is wrapped around the arm A in a posture that can appropriately compress the arm A from the viewpoint of blood pressure measurement.

[Problem with conventional technology]
Here, technical problems of the conventional blood pressure monitor cuff will be described. Conventional sphygmomanometer cuffs have a shape in which one end in the winding direction of the core material is located outside the other end (in the direction away from the subject), and the one end is hooked on the subject and pressed against the subject. , making it easy to wind the core material around the subject. The core material of the conventional sphygmomanometer cuff consists only of a portion to be wound around the subject, that is, only of a material corresponding to the core material main body 21 of the present disclosure, and when rolled up, One end is located outside the other end by gradually changing the curvature of .

Therefore, in the conventional core material, the distance between one end and the other end depends on the degree of curvature change. In addition, when the distance between one end and the other end of the conventional core material is widened, the curling of the core material becomes tighter, so that it becomes difficult to properly fit the core material onto the subject, and there is a risk that the function of assisting the winding may be reduced. There is On the other hand, when the curvature of the conventional core material is set from the viewpoint of fitting it appropriately to the subject, the distance between one end and the other end becomes narrow, and it is difficult to widen the distance between the other end while placing one end on the arm. turn into.

[Function of the present disclosure]
On the other hand, the core material 20 of the sphygmomanometer cuff 10 of the present disclosure includes a core material main body part 21 having a curvature set from the viewpoint of assisting winding around the arm A (subject), and a core material part 21 extending from one end 21b thereof. and a guide portion 22 extending in a direction away from the body portion 21 . Therefore, the core material 20 can easily apply the guide part 22 to the arm A without reducing the function of assisting winding around the arm A, and the core material main body part 21 can be easily attached to the arm A. Arm A can be properly fitted.

Here, since the guide portion 22 is formed of an elastic plate material as a part of the core member 20, when the rounded portion of the sphygmomanometer cuff 10 (cover 11) is worn on the arm A, the guide portion 22 is When the remaining part is wrapped around the arm A, it can be wrapped around the arm A together with the cover 11.例文帳に追加At this time, since the elastic force of the guide portion 22 is made weaker than that of the core material body portion 21, the repulsive force at the time of wrapping around the arm A can be suppressed, and the winding can be facilitated. In addition, since the tip 22a of the guide part 22 is rounded to have a substantially semicircular shape, the repulsive force against the winding due to its own elasticity acts locally on the cover 11 (mainly the outer cloth 13). Therefore, it is possible to prevent the cover 11 from being damaged. Therefore, the guide portion 22 functions as a load distribution portion that distributes the load on the cover 11 when the tip 22 a is pressed against the cover 11 . Accordingly, the guide portion 22 can appropriately assist the winding of the sphygmomanometer cuff 10 around the arm A without hindering the attachment of the sphygmomanometer cuff 10 to the arm A.

In addition, since the core material 20 of the present disclosure has notch portions 23 at respective ends (one end 21b and the other end 21c) in the winding direction P of the core material main body 21, as shown in FIG. Even if it is tilted with respect to A, it is easy to wear on the arm A. This is due to the following effects. First, the core material 20 is arranged such that the lower edges 25a (one end 21b, the other end 21c) of both narrow portions 25 of the core body 21 are parallel to the arm A (see FIG. 9, etc.). It should be in a state where there is no inclination. Since the core member 20 is provided with the notch portion 23, even when the lower edge 25a is in contact with the arm A and is tilted with respect to the arm A, the two convex portions of the notch portion 23 are formed. The core body portion 21 does not contact the arm A until the corner portion 23a is tilted to contact the arm A. Even if the core member 20 tries to tilt beyond the state in which both the corner portions 23a are in contact with the arm A, one of the corner portions 23a hits the arm A, and the tilt cannot be increased. Therefore, when viewed in the left-right direction Dh, the core material 20 has a tilt limit line SL indicating the limit of tilt with respect to the arm A (in FIG. 14, the arm overlaps the upper edge of A). On the other hand, a core material without a notch portion cannot be tilted because the core body portion comes into contact with the arm even if the user tries to tilt the core material from a non-tilted state. Therefore, the core member 20 can be worn while allowing inclination with respect to the arm A by providing the notch portion 23 . This means that it is difficult to wear the sphygmomanometer cuff 10 while keeping the lower edge 25a side of the core body 21 in contact with the arm A while keeping it from tilting, or it is difficult to hold. When the subject holds the core material main body 21 at a certain point, the subject can attach the core material main body 21 to the arm A while tilting the core material main body 21.例文帳に追加In this manner, the core member 20 can be easily attached to the arm A by providing the notch portion 23 .

In addition, by providing the notch 23, the core member 20 is tilted with respect to the arm A as shown in FIG. To facilitate mounting on an arm A even in the case of being folded. This is due to the following. A core material having no notch (hereinafter also referred to as a core material without a notch) has the same dimensions as the wide portion 24 in the width direction Dw at the portions corresponding to both narrow width portions 25 in the core material body portion. As a result, the corner portion protrudes below the core material 20 when viewed from the front in FIG. 14 . For this reason, when the core material without notches is brought close to the arm A in the same posture as the core material 20 in FIG. The body portion (the corner portion thereof) contacts the arm A. Then, even if a guide part similar to the core material 20 is provided, the notched core material cannot be applied to the arm A, or only the tip thereof can be applied to the arm A. It will happen. Then, the notched core member cannot use the guide portion, or the movement of the one end side with respect to the arm A cannot be sufficiently stopped by the guide portion only at the tip, and the gap between the one end and the other end is expanded. can no longer be obtained. On the other hand, by providing the notch 23 in the core 20, the lower end position of the core body 21 in the posture shown in FIG. It is possible to make the position to be closer. For this reason, the core member 20 can bring the guide portion 22 into reliable and sufficient contact with the arm A as shown in FIG. 14, so that the guide portion 22 can function effectively.

Furthermore, in addition to these, the notch 23 is provided in the core material 20, so that the interval for pushing the arm A (hereinafter also referred to as the insertion interval) can be increased. Contributes to easy mounting. This will be described with reference to FIG. First, in core material 20 , core material main body 21 has wide portion 24 and narrow portion 25 by providing notch portion 23 . In the core member 20, one end 21b and the other end 21c, which define the insertion interval, are brought close to each other at the narrow portion 25 (the lower edge 25a thereof). On the other hand, in the core member 20, in the wide portion 24, the insertion interval is defined by the corner portion 23a on the one end 21b side and the corner portion 23a on the other end 21c side. ) is larger than the insertion interval in the narrow portion 25 . Therefore, in the core member 20, by utilizing the insertion interval between the two corner portions 23a of the wide portion 24, the arm A is directly pushed into the insertion interval (between one end 21b and the other end 21c) of the narrow portion 25. Since it becomes easier to push in the arm A compared to the above, it can be easily attached to the arm A. Even in this case, in the core member 20, even if the arm A is pushed into the insertion interval of the wide portion 24 (both corner portions 23a), the insertion interval of the narrow portion 25 (one end 21b and the other end 21c) is then inserted. ), the inclination limit line SL still indicates the limit of the inclination of the arm A.

And since the core material 20 of Example 1 has the notch part 23 in both corners (21a) of the width direction Dw in each edge part (one end 21b, the other end 21c), Can be tilted on either side of the direction. Therefore, the core member 20 can be tilted in the same manner with respect to both the left arm A and the right arm A of the subject, making it easy to wear the sphygmomanometer cuff 10. It is possible to improve usability. In addition, the sphygmomanometer cuff 10 may be worn by the subject himself or herself, or may be worn by another person such as a caregiver other than the subject. Although the habit of tilting differs from person to person, it can be tilted in a direction that is easy to wear, so that usability can be improved.

In particular, in the core member 20 of Example 1, the guide portion 22 extends beyond the tilt limit line SL when viewed in the left-right direction Dh. Therefore, the core member 20 allows the guide portion 22 to be applied to the arm A even when the core member main body portion 21 is tilted to the maximum inclination where both corner portions 23a of the notch portion 23 contact the arm A. can be done. As a result, even when the core body portion 21 is tilted with respect to the arm A, the core member 20 can obtain the effects of the position guiding action and movement guiding action of the guide portion 22 described above. Therefore, the core material 20 can be attached to the arm A more easily.

[Action and effect of the present disclosure]
The sphygmomanometer cuff 10 of one embodiment of the sphygmomanometer cuff according to the present disclosure can obtain the following effects.

In the sphygmomanometer cuff 10, the core material 20 housed in the cover 11 surrounds the subject in the winding direction P, and the one end 21b of the core material main body 21 extends in a direction away from the core material main body 21. and a guide portion 22 . In the sphygmomanometer cuff 10, in the core member 20, the guide portion 22 is positioned further than the end portion (21D) of the core body portion 21 in the tangential direction Dt at one end 21b with respect to the curvature of the core body portion 21. extending outwards. Therefore, since arm A is guided in a direction in which one end portion 21b and the other end portion 21a of the sphygmomanometer arm cuff 10 are in a state in which the guide portion 22 is applied to the arm A, the one end portion 21b and the other end portion 21a are easily widened. 21a can be expanded. Accordingly, the sphygmomanometer cuff 10 can be easily attached to the subject.

Further, in the sphygmomanometer cuff 10 , the guide portion 22 has a smaller dimension in the width direction Dw than the core main body portion 21 . Therefore, in the sphygmomanometer cuff 10, the guide portion 22 can be more easily bent, that is, the elastic force can be made weaker than in the case where the dimensions of the sphygmomanometer arm cuff 10 are the same as those of the core main body portion 21. The repulsive force from the guide part 22 when winding the remaining portion around the arm A can be suppressed, and the winding can be facilitated.

Furthermore, the sphygmomanometer cuff 10 extends the guide portion 22 along the tangential direction Dt. Therefore, in the sphygmomanometer cuff 10, the guide portion 22 can be extended outward from the core main body portion 21 in the tangential direction Dt in the shortest distance, and the guide portion 22 can be easily applied to the arm A. I can do it.

The sphygmomanometer cuff 10 has cutout portions 23 in which the corners 21a of both ends (one end 21b and the other end 21c) in the winding direction P of the core body portion 21 are cut out. Therefore, the sphygmomanometer cuff 10 can be easily attached to the arm A even when the cuff 10 is tilted with respect to the arm A. As shown in FIG.

The sphygmomanometer cuff 10 has cutouts 23 at two corners 21 a in the width direction Dw of the core body 21 . Therefore, the sphygmomanometer cuff 10 can be tilted in any direction with respect to the arm A, and can be easily attached to the arm A.

The sphygmomanometer cuff 10 extends the guide portion 22 to a position where it intersects the tilt limit line SL defined by the provision of the notch portion 23 . Therefore, even when the sphygmomanometer cuff 10 is tilted with respect to the arm A, the guide portion 22 can be attached to the arm A, and the guide portion 22 can guide the position and guide movement. You can get the effect of action.

The sphygmomanometer cuff 10 has a substantially semicircular rounded tip 22a of the guide portion 22 that functions as a load distributing portion that disperses the load on the cover 11 when it is pressed against the cover 11 . Therefore, the sphygmomanometer cuff 10 can prevent the guide portion 22 from damaging the cover 11 when the cover 11 is wrapped around the arm A.

Therefore, the sphygmomanometer cuff 10 of Example 1 as the sphygmomanometer cuff according to the present disclosure accommodates the core material 20 and can be easily fitted to the subject.

The sphygmomanometer cuff of the present disclosure has been described above based on Example 1, but the specific configuration is not limited to Example 1, and the gist of the invention according to each claim. Design changes and additions are permitted as long as they do not deviate from

For example, in the first embodiment described above, the core material 20 is made of resin. However, since the core member 20 has a core member main body portion 21 and a guide portion 22, even if a load is applied to open the substantially cylindrical shape into a flat plate shape, the original substantially cylindrical shape can be restored by removing the load. It is not limited to the configuration of the first embodiment as long as it has elasticity to restore the shape.

Further, in the first embodiment described above, in the core member 20, the core member main body portion 21 and the guide portion 22 are integrally configured. However, the guide portion 22 extends from one end 21b of the core body portion 21 in a direction away from the core body portion 21 and extends outside the end of the core body portion 21 in the tangential direction Dt. If so, it may be constructed separately from the core material main body 21 and attached to the core material main body 21, and is not limited to the configuration of the first embodiment. If the guide portion 22 is configured separately from the core material body portion 21, the hardness (flexibility), durability, etc., of the core material body portion 21 can be made higher than that of the core material body portion 21 from the viewpoint of obtaining the effects of the position guide action and the movement guide action. Materials optimized with low elastic forces can be used. In this case, for the guide portion 22, for example, the member near the one end 21b of the core body portion 21 and the tip end 22a side of the guide portion 22 are made of different members, and the near side is partially more flexible than the core body portion 21. It is also possible to make it a weak elastic force.

Furthermore, in the first embodiment described above, the load distributing portion is formed by rounding the tip 22a of the guide portion 22 . However, the load distributing section is not limited to the configuration of the first embodiment as long as it disperses the load on the cover 11 when pressed against the cover 11 . An example is shown in FIG. The load distributing portion of FIG. 15 is provided with a projecting portion 28 at the tip 22a of the guide portion 22. As shown in FIG. The protrusions 28 are formed so as to protrude from the tip 22a on both sides in the width direction Dw. Since the protrusion 28 can increase the contact area of the tip 22 a with the cover 11 , the load on the cover 11 can be distributed.

In the first embodiment described above, the guide portion 22 extends along the tangential direction Dt. However, the guide portion 22 extends away from the core body portion 21 and extends to the outside (below the lower end reference plane Pr shown in FIG. 6) of the end portion of the core body portion 21 in the tangential direction Dt. If it exists, the direction in which it extends may be appropriately set, and the configuration is not limited to that of the first embodiment. For example, the guide portion 22 may extend while being curved in the left-right direction Dh or the width direction Dw with respect to the tangential direction Dt, or may extend while being inclined with respect to the tangential direction Dt. In addition, the guide part 22 may extend along the tangential direction Dt in the vicinity of the base end (one end 21b), and the tip side thereof may be partially curved or inclined with respect to the tangential direction Dt. In addition, although the guide portion 22 has an elongated rectangular shape (excluding the tip 22a), the shape may be appropriately set by changing the dimension in the width direction Dw, and the configuration is limited to that of the first embodiment. not. In addition, although the guide part 22 is a single elongated one, it may be composed of a plurality of projections so that a plurality of rectangular ones extend in the tangential direction Dt. It is not limited to the configuration of the first embodiment.

In Example 1 described above, the notch 23 is provided in the core material 20 . However, even when the core material 20 is tilted with respect to the subject (arm A), the notch 23 facilitates attachment to the subject, and may not be provided. It is not limited to the configuration of Example 1.

In Embodiment 1 described above, the air bag 12 has a two-layer structure in which two bag bodies are stacked. However, the air bag 12 may be a single bag body, or may have a multi-layer structure in which three or more bag bodies are stacked. Further, instead of the air bag 12, a fluid bag into which liquid flows may be used.

The first embodiment described above shows an example in which the sphygmomanometer cuff of the present disclosure is applied to a sphygmomanometer worn on an arm as a subject. However, the sphygmomanometer cuff of the present disclosure can also be applied to a sphygmomanometer worn on the wrist of the subject.

In Example 1 described above, the return portion 27 configured as described above is provided at the other end 21 c of the core body portion 21 . However, the return portion 27 is inclined to generate a component of force in the direction of opening both edges (one end 21b, the other end 21c) of the core body 21 when the core body 21 is applied to the arm A. As long as the surface 27a is formed, the configuration thereof may be appropriately set, and is not limited to the configuration of the first embodiment.

10 Sphygmomanometer cuff 11 Cover 20 Core material 21 Core material body 21a Corner 21b One end 21c Other end 22 Guide part 22a Tip (as an example of the load dispersing part) 23 Notch 28 (as an example of the load dispersing part) ) Projection A Arm (as an example of a subject) Dt Tangential direction Dw Width direction P Wrapping direction SL Inclination limit line

Claims (7)

a strip-shaped cover that is wound around the object and whose winding direction is long in the width direction;
a core material that is housed in the cover and has elasticity and is curved in the winding direction;
The core material has a core body portion surrounding the subject in the winding direction, and a guide portion extending from one end of the core body portion in the winding direction in a direction away from the core body portion. death,
The guide portion has an elastic force weaker than that of the core material main body at least in the vicinity of the one end. A cuff for a sphygmomanometer characterized by extending to the outer side of the sphygmomanometer. The cuff for a sphygmomanometer according to claim 1, wherein the guide portion has a dimension in the width direction smaller than that of the core body portion. 3. The sphygmomanometer cuff according to claim 1, wherein the guide portion extends along the tangential direction at least in the vicinity of the one end. The cuff for a sphygmomanometer according to any one of claims 1 to 3, wherein the core material main body has cutout portions formed by cutting corners at both ends in the winding direction. . 5. The cuff for a sphygmomanometer according to claim 4, wherein the notch is provided at each of two corners in the width direction of the core body. 6. The cuff for a sphygmomanometer according to claim 4, wherein the guide portion extends to a position where it intersects an inclination limit line defined by the provision of the notch. 2. The guide portion has a load distributing portion provided at a tip opposite to the core body portion for distributing a load applied to the cover when the guide portion is pressed against the cover. The cuff for a sphygmomanometer according to any one of claims 1 to 6.

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