WO2023073852A1

WO2023073852A1 - Mat

Info

Publication number: WO2023073852A1
Application number: PCT/JP2021/039756
Authority: WO
Inventors: 生央虎谷
Original assignee: トラタニ株式会社
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2023-05-04
Also published as: WO2023074023A1

Abstract

Provided is a mat (1) that can facilitate breathing in a supine position. The mat (1) comprises a back supporting section (3). The back supporting section (3) is disposed below a region corresponding to at least a portion of each of the pair of left and right serratus posterior superior muscles of a supine person, and comprises: a pair of serratus posterior superior muscle stepped parts (19) that are recessed below a reference surface (100) of the back supporting section (3); and a pair of scapula supports (20) that support a region corresponding to the pair of left and right scapulae of a supine person. The pair of scapula supports (20) has inferior supports (21) that support a region corresponding to the portion of the scapulae that are inferior to the serratus posterior superior muscles, the region being supported at a position at or above the height of the reference surface (100). The inferior supports (21) are configured to be taller than the portions of the scapula supports (20) that are superior to the inferior support parts (21).

Description

mat

The present invention relates to a mat, and in particular to a mat that facilitates breathing while lying on one's back.

Some mats are used to support the body when the person lays down. This type of mat is required to have the function of making the person lying on it feel comfortable.

The sleeping comfort of a mat depends on the balance between the repulsive force of the mat and the body pressure of the person lying on the mat. Body pressure is the pressure applied to the mat by a person lying on the mat, and its distribution varies depending on the posture of the body. For example, the body pressure in the supine position is highest in the buttocks, followed by the back. When a mat supports the entire body of a person lying on his or her back, body pressure is concentrated on the buttocks and the back if the repulsive force of the mat is uniformly high, so that the buttocks and the back are likely to become congested. As a result, there is a lot of tossing and turning in order to relieve congestion, so sleep tends to be light. Conversely, if the repulsive force of the mat is uniformly low, the buttocks will sink the deepest into the mat. As a result, the spine when lying on one's back is greatly distorted from the S-shape when standing upright, causing back pain and stooping.

As a device for improving sleep comfort, mats are known in which the repulsive force or surface shape is changed depending on the location in the direction of the spine of a person lying on their back (see Patent Documents 1 to 3, for example). In these mats, the areas that contact the buttocks and back are set softer or lower than other areas. As a result, the body pressure that was concentrated on the buttocks and back is distributed to other parts, and as a result, the body pressure becomes more uniform throughout the mat, so that the spine when lying on the back is in the same S shape as when standing upright. can get closer.

In addition to the number of times you toss and turn and the shape of your spine, the depth of your breathing is also related to how comfortable you sleep. The deeper you breathe during sleep, the better you feel. However, even if the body pressure is made uniform over the entire mat as described above, breathing may become shallow when lying on one's back, and there is room for improvement in promoting breathing.

Japanese Utility Model Laid-Open No. 06-058762 Japanese Patent Application Laid-Open No. 2002-119382 Japanese Patent Publication No. 2016-506797

The present invention has been made in view of the above circumstances, and an object thereof is to provide a mat that facilitates breathing while lying on one's back.

The mat of the present invention is a mat provided with a back support for supporting the back of a supine person, wherein the back support is attached to at least a part of each of a pair of right and left serratus posterior superior muscles of the supine person. A pair of serratus posterior superior stepped portions located below the corresponding portions and recessed lower than the reference plane constituting the upper surface of the back support, and portions corresponding to the pair of left and right scapula of the supine person. and a pair of scapula support parts for supporting, wherein the pair of scapula support parts are arranged so that the portion of the scapula corresponding to the leg side portion of the serratus posterior superior muscle is positioned at a height equal to or higher than the reference plane. It has a leg-side support part for supporting at a position, and the leg-side support part is configured to be higher than the head-side portion of the scapula support part than the leg-side support part. and

It is a perspective view showing the whole composition of the mat concerning the embodiment of the present invention. 2 is a plan view of the mat of FIG. 1; FIG. FIG. 2 is a cross-sectional view of the mat of FIG. 1 taken along line III-III. FIG. 2 is an explanatory diagram showing a state in which a person lies on the mat shown in FIG. 1; FIG. 2 is a rear view of the mat and the person, schematically showing the relative positional relationship between the mat of FIG. 1 and the skeleton of the person lying on their back; FIG. 2 is a vertical cross-sectional view of a mat and a person schematically showing the relative positional relationship between the mat of FIG. 1 and the skeleton of a person lying on their back. FIG. 2 is an explanatory view schematically showing the arrangement of the serratus posterior inferior and superior serratus posterior muscles of a person and the steps of the serratus posterior superior muscles of the mat of FIG. 1 ;

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

(Overview of Mat 1)
The mat 1 shown in FIGS. 1 to 5 is integrally formed of an elastic material such as thin rectangular parallelepiped urethane. The mat 1 constitutes a bed together with a frame or base (not shown) supporting the mat 1 . The mat 1 is sized to support the entire body of a person 50 (see FIGS. 4 to 6) lying thereon, for example, with its entire upper surface. The size of the mat 1 is set according to, for example, a standard adult figure (for example, a Japanese adult male with a height of 170 cm and a weight of about 70 kg). In the present invention, the mat 1 only needs to have a size capable of supporting at least the part corresponding to the back 52 (see FIGS. 4 to 6) of the person 50 lying on his or her back.

In the specification and drawings of the present application, the direction in which the body of the supine person 50 extends (the head side X1, the leg side X2) and the width direction Y of the supine person 50 (the right side Y1, the left side Y2) are used to represent directions. , and a thickness direction Z (upper side Z1, lower side Z2) of the mat 1 are defined.

The mat 1 has a shape in which a portion that can come into contact with the back 52, pelvis PV, and legs of the person 50 lying on their back protrudes upward Z1. Specifically, the mat 1 includes a flat rectangular parallelepiped base portion 2 and three portions projecting upward Z1 from the upper surface 2a of the base portion 2, that is, a back support portion 3 and a pelvis support portion 4. , and a leg support 5 . The back support 3 supports the back 52 of the supine person 50 (see FIGS. 4-6). The pelvis support part 4 is located on the leg side X2 of the back support part 3 and supports a part corresponding to the pelvis PV (see FIGS. 4 and 5). The leg support section 5 is located on the leg side X2 from the pelvis support section 4, and supports a portion corresponding to the portion of the leg near the femur FM (see FIGS. 4 and 5).

A head placement area 6 in which a head 51 (see FIG. 4) is placed is formed on the head side X1 of the mat 1 with respect to the back support portion 3 . In the head placement area 6, the upper surface 2a of the base portion 2 is exposed, and a pillow P for supporting the head 51 is placed.

Between the pelvis support part 4 and the leg support part 5 in the mat 1, there is a stepped part recessed lower than the reference plane 100 constituting the upper surface of the back support part 3 and where the hip joint J (see FIGS. 4 and 5) is arranged. A hip placement area 7 is formed with 7a. The hip joint J is housed in the stepped portion 7a when the person 50 is lying on his or her back.

When lying on one's back, the pelvis supporting part 4 (specifically, the ilium supporting part 11, which will be described later) and the leg supporting part 5 are crushed by the weight of the person 50. become unsupported. Therefore, the depth of the stepped portion 7a is set to such an extent that it is not crushed even by the weight of the person 50. As shown in FIG.

(Description of the back 52)
Inside the back 52 supported by the back support part 3 are a pair of lower serratus posterior muscles 41 and a pair of superior serratus posterior muscles 42 as shown in FIG. be.

A pair of serratus posterior inferior muscles 41 are arranged on both the left and right sides of the leg-side portion of the spinal column SP of a supine person. Each lower serratus posterior muscle 41 has four portions 41a-41d. The four portions 41a to 41d of the lower posterior serratus muscle 41 are arranged in order from the head side to the leg side, and extend outward in the left-right direction Y toward the leg side X2. Therefore, the overall shape of the lower posterior serratus 41 has a substantially parallelogram shape. The four parts 41a to 41d are respectively the 11th thoracic vertebrae T11 to the 2nd lumbar vertebrae L2 (that is, the 11th thoracic vertebrae T11, the 12th thoracic vertebrae T12, the 1st lumbar vertebrae L1, and the 2nd lumbar vertebrae L2) and the 9th ribs R9 to the 2nd lumbar vertebrae L2. 12 ribs R12 are connected respectively.

A pair of superior serratus posterior muscles 42 are arranged on both left and right sides of the cranial portion of the spine SP of a person lying on their back. Each posterior superior serratus 42 has four portions 42a-42d. The four portions 42a to 42d are arranged in order from the head side to the leg side, and extend outward in the left-right direction Y toward the head side X1. Therefore, the overall shape of the superior posterior serratus 42 has a substantially parallelogram shape. The four portions 42a-42d are the 6th cervical vertebrae C6 to the 2nd thoracic vertebrae T2 (ie, the 6th cervical vertebrae C6, the 7th cervical vertebrae C7, the 1st thoracic vertebrae T1, the 2nd thoracic vertebrae T2) and the 2nd ribs R2 to the 5th ribs R5. and respectively. The serratus posterior superior muscle 42 is connected to the second rib R2 to the fifth rib R5, but is not connected to the scapula SC. Specifically, in the portion 42a of the serratus posterior superior muscle 42 that is closest to the cranial side X1, the end portion 42a1 connected to the second rib R2 is located closer to the spinal column SP than the scapula SC. In the other three portions 42b to 42d of the serratus posterior superior muscle 42, the ends 42b1 to 42d1 connected to the third rib R3 to the fifth rib R5 are connected to the scapula SC and the third rib R3 to the fifth rib R5. is located in the part where and overlap vertically, but it is only connected to the ribs and not to the scapula SC.

During respiration, the 12 pairs of ribs that form the ribcage during respiration move to assist the vertical movement of the diaphragm DP (see Fig. 5). Specifically, during expiration, the ribs forming the rib cage are pulled down by the contraction of the inferior serratus posterior muscle 41 to narrow the rib cage. During inspiration, the ribs are pulled up by contraction of the serratus posterior superior muscle 42 to expand the ribcage. Since the ribs are connected by intercostal muscles, the entire rib group moves up and down.

The mat 1 of this embodiment has the following structure of the back support part 3 so as not to limit the lifting of the ribs by the superior serratus posterior muscle 42 when lying on one's back.

(Explanation of the back support part 3)
In this embodiment, as shown in FIGS. 1 to 7, the structure of the head side X1 portion of the back support 3 for not restricting the lifting of the rib group by the superior serratus posterior muscle 42 is as follows. It has a pair of scapula support parts 20 , a pair of serratus posterior muscle step parts 19 , a thoracic spine support part 18 , and a thoracic spine step part 23 .

The pair of serratus posterior superior muscle stepped portions 19 are substantially rectangular stepped portions in a plan view disposed below portions corresponding to at least portions of the pair of left and right posterior superior serratus posterior muscles 42 of the person 50 lying on their back. is. The upper posterior serratus stepped portion 19 is recessed lower than a reference surface 100 forming the upper surface of the back support portion 3 . In this embodiment, each of the pair of serratus posterior muscle step portions 19 is a portion corresponding to the portion where the serratus posterior superior muscle 42 most contracts and elongates, and the vertebral column of the person lying on the back in each of the pair of serratus posterior superior muscle 42. It is formed in the range located between SP and scapula SC. This makes it possible to reliably avoid pressure on the portion of the superior serratus posterior muscle 42 that greatly contributes to pulling up the rib group.

The scapula supporting portion 20 supports a portion corresponding to a pair of left and right scapulas SC. The scapula supporting portion 20 of this embodiment has a leg-side supporting portion 21 and a head-side stepped portion 22 . The leg-side support portion 21 is a portion that supports a portion of the scapula corresponding to the portion SC1 on the leg side of the serratus posterior superior muscle 42 at a height position equal to or higher than the reference plane 100. In this embodiment, the reference plane 100 is provided. getting higher. Note that the leg-side support portion 21 may be at the same height as the reference plane 100 . In addition, the leg side support portion 21 is higher than the head side X1 portion (specifically, the portion flush with the reference plane 100 in FIG. 1) of the scapula support portion 20 relative to the leg side support portion 21. It's becoming As described above, the serratus posterior superior muscle 42 is connected to the second rib R2 to the fifth rib R5 and has portions overlapping the scapula SC. is not connected, and the leg-side support part 21 supports a portion of the scapula SC that corresponds to the portion SC1 on the leg side of the serratus posterior superior muscle 42, so that the body pressure received by the scapula SC The movement of the superior serratus posterior muscle 42 is not hindered.

The head-side stepped portion 22 is arranged below the portion corresponding to the head-side X1 portion of the scapula SC and recessed lower than the reference plane 100 . The head-side stepped portion 22 is formed, for example, in a range including the scapular spine SC2 (see FIGS. 5 and 7). It is formed in the range of about /4. It should be noted that when the area occupied by the head-side stepped portion 22 in the scapula support portion 20 increases, the upper portion of the superior serratus posterior muscle 42 is likely to be pressed. Therefore, as shown in FIGS. It is preferable to have a pair of inner supporting portions 24 arranged on the inner side in the width direction and supporting the vicinity of the shoulder from the inner and cranial side of the scapula SC.

The pair of posterior serratus stepped portions 19 are arranged so that the body pressure from the pair of serratus posterior stepped portions 19 is lower than the body pressure from the reference surface 100 and the leg-side support portion 21 of the scapula support portion 20. It is configured. In this embodiment, the posterior superior serratus stepped portion 19 is recessed below the reference surface 100 of the back support portion 3, thereby reducing the body pressure from the superior posterior serratus stepped portion 19. .

As shown in FIG. 3, the depth H0 of the superior posterior serratus stepped portion 19 is such that the body pressure from the pair of superior posterior serratus stepped portions 19 is equal to the reference plane 100 and the depth H0 even when the reference plane 100 is sunk when lying on the back. The height is set to the extent that the relationship of being lower than the body pressure from the leg-side support portion 21 can be maintained. The body pressure from the superior posterior serratus muscle step portion 19 is no pressure when the portion corresponding to the superior posterior serratus muscle 42 does not contact the superior posterior serratus muscle step portion 19 in a state where the reference surface 100 is sunk when lying on the back. , the body pressure generated by compressing the reference surface 100 by the height H0 is set to be lower than the body pressure from the reference surface 100 even when the contact is made with the upper posterior serratus stepped portion 19. It is Further, if the hardness of the upper posterior serratus stepped portion 19 in the mat 1 is set to be lower than the hardness of the reference surface 100, the pressure will be lower, which is preferable.

Here, the body pressures from the reference plane 100, the scapula support portion 20, and the serratus posterior superior muscle step portion 19 are measured, for example, by an existing body pressure measuring device. The body pressure measuring device divides the area on the mat 1 into a matrix and measures the load for each square as the body pressure. By using this body pressure measuring device, the body pressure from the reference surface 100, the scapula support 20, and the serratus posterior superior step 19 can be measured, for example, at the leg-side support of the scapula support 20. 21 to the leg-side portion SC1 of the scapula SC, and the body pressure applied to the region corresponding to the superior serratus posterior muscle step 19 to the superior serratus posterior muscle 42. can be obtained as the average value of

The width W12 of the stepped portion 19 of the serratus posterior superior muscle may be any width that can cover the range of each of the pair of serratus posterior superior muscles 42 located between the spine SP and the scapula SC of the person lying on their back. A specific numerical range of the width W12 will be described later in association with the width W11 of the thoracic spine support portion 18. FIG.

The thoracic spine support part 18 is arranged between a pair of serratus posterior superior stepped parts 19, and includes three thoracic vertebrae including at least the first thoracic vertebrae T1 to the third thoracic vertebrae T3 of the spinal column SP in the back 52 of the person 50 lying on his back. The parts corresponding to the continuous parts are continuously supported. As shown in FIGS. 1 and 6, the thoracic spine support section 18 of the present embodiment continuously supports the spinal column of a supine person together with the lumbar spine side support section 8, which will be described later. The upper surface 18a of the thoracic spine supporting portion 18 continuously extends in the direction X in which the body extends, and can continuously support from the first thoracic vertebrae T1 to the third thoracic vertebrae T3.

The length of the thoracic spine support part 18 (the length in the direction X in which the body extends) is such that three or more thoracic vertebrae including at least the first thoracic vertebrae T1 to the third thoracic vertebrae T3 of the spinal column SP in the back 52 of the person 50 lying on their back are continuous. The length may be sufficient as long as it can continuously support the part corresponding to the cut part. In FIGS. 5 to 7, the length of the thoracic spine supporting portion 18 has a length that can continuously support three portions corresponding to the first thoracic vertebrae T1 to the third thoracic vertebrae T3 of the spinal column SP. It may be four continuous ranges such as the range from the first thoracic vertebrae T1 to the fourth thoracic vertebrae T4.

As will be described later, in the vicinity of the sixth thoracic vertebrae T6 (the range from the fifth thoracic vertebrae T5 to the seventh thoracic vertebrae T7) of the spine, it is better to provide the thoracic stepped portion 23 so that the spine becomes more flexible when breathing when lying on one's back. It is preferable because it does not hinder movement.

In addition, since the body pressure on the superior serratus posterior muscle 42 is received by the scapula SC and the upper thoracic spine (first thoracic vertebrae T1 to third thoracic vertebrae T3), the thoracic spine support section 18 is used to avoid pressure on the superior serratus posterior muscle 42. It is not necessary to support the cervical spine with The cervical spine is under the influence of the head (ie, under the weight of the head) in supine position, and the neck is under the influence of the head-supporting pillow. Furthermore, it is better to avoid supporting the cervical spine with the thoracic spine support section 18 as much as possible, since the neck support may increase the tension of the muscles around the neck used during breathing. From such a point of view, the thoracic spine support 18 may support the seventh cervical vertebrae C7, which has the least effect on the tension of the muscles around the neck even if it supports the cervical vertebrae, but the sixth cervical vertebrae C6 and It is better not to support the cervical vertebrae on the cranial side.

In addition, the continuous support by the thoracic spine support portion 18 only needs to individually support each thoracic spine in the above range. Therefore, the thoracic spine support part 18 is not limited to a shape that continuously extends in the direction X in which the body extends, and may be a shape that is intermittently interrupted unless there is one or more gaps in the thoracic spine. good.

The width W11 of the thoracic vertebrae support portion 18 shown in FIGS. 2 and 3 is set within a region corresponding to a portion where three or more thoracic vertebrae including at least the first thoracic vertebrae T1 to the third thoracic vertebrae T3 are continuous. In other words, the width W11 of the thoracic spine supporting portion 18 abuts on a portion corresponding to a portion where three or more thoracic vertebrae are continuous, including at least the first thoracic vertebrae T1 to the third thoracic vertebrae T3. It is set to a range that does not come into contact with the portions corresponding to the ribs R1 to R3 extending in the width direction Y).

Next, numerical ranges of the width W11 of the thoracic spine support portion 18 and the width W12 of the superior serratus posterior muscle step portion 19 will be described with reference to FIGS. Specifically, the width W11 of the thoracic spine support portion 18 is preferably set in the range of 4 to 11 cm (preferably, about 6 to 9 cm) based on the standard Japanese adult body type. . If the width W11 is less than 4 cm, the area for supporting the portion corresponding to the thoracic spine becomes too small, and there is a problem that the linked movement of the thoracic spine cannot be maintained. On the other hand, if the width W11 is larger than 11 cm, the thoracic spine support section 18 presses not only the thoracic spine but also the ribs on both sides of the thoracic spine, thus impeding intake. Therefore, the width W11 of the thoracic spine supporting portion 18 is preferably set within a range of 4 to 11 cm, as described above, as a range in which the ribs are not compressed while maintaining interlocking of the thoracic spine.

The width W12 of the serratus posterior superior stepped portion 19 is set as follows, taking into account the width W11 and the distance between the scapula SC. That is, the sum W13 (=W12+W11+W12) of the width W11 of the thoracic spine support portion 18 and the width W12 of the pair of serratus posterior superior step portions 19 is the left and right scapula SC (see FIG. 5) in a standard Japanese adult body type. ) (approximately 16 to 24 cm) or slightly larger. Specifically, when the width W11 is 4 to 11 cm, and the total W13 corresponding to the distance between the shoulder blades is 16 to 24 cm, W12 is set to (W13-W11)/2=2.5 to 10 cm.

The thoracic stepped portion 23 is arranged below a portion of the back of a supine person corresponding to a portion where two or more thoracic vertebrae including at least the sixth thoracic vertebrae T6 of the spinal column SP are continuous, and is positioned below the reference plane 100 of the back support portion 3. is also recessed low. For example, as shown in FIGS. 5 and 6, the thoracic stepped portion 23 is formed in a range including the fifth thoracic vertebrae T5 to the seventh thoracic vertebrae T7 as a range including the sixth thoracic vertebrae T6. As shown in FIG. 6, the vicinity of the sixth thoracic vertebra T6 is located at the lowest position among the thoracic vertebrae in the supine posture, and the body pressure is the highest in the supine position. can be relieved to promote supple movement of the spine.

(Features of this embodiment)
(1)
In order to promote respiration while lying on one's back, the present inventors have made intensive studies on how to remove the pressure that inhibits the movement of the superior serratus posterior muscle 42 that raises the ribs during inspiration. came to invent.

That is, the mat 1 of this embodiment includes a back support portion 3 that supports the back of the person lying on their back.
1 to 3 and FIGS. 6 to 7, the back support 3 is arranged below a portion corresponding to at least a part of each of the left and right pair of serratus posterior superior muscles 42 of a supine person. A pair of serratus posterior muscle steps 19 recessed lower than a reference plane constituting the upper surface of the back support part, and a pair of scapula support parts 20 supporting parts corresponding to a pair of left and right shoulder blades SC of a supine person. and The pair of scapula support parts 20 has leg-side support parts 21 that support a portion of the scapula SC that corresponds to the leg-side portion SC1 of the serratus posterior superior muscle 42 . The leg side support portion 21 is configured to be higher than the portion of the scapula support portion 20 on the head side X1 relative to the leg side support portion 21 .

According to such a configuration, a pair of serratus posterior muscle stepped portions 19 are provided below portions corresponding to at least a part of each of the pair of serratus posterior superior muscles 42 of a supine person, and the stepped portion 19 is , is recessed lower than a reference surface 100 forming the upper surface of the back support portion 3. In addition, the scapula support 20 has a leg-side support 21 that supports a portion SC1 of the scapula SC that is closer to the leg than the superior serratus posterior muscle 42 at a height position equal to or higher than the reference plane 100. , the leg side support portion 21 is higher than the portion of the shoulder blade support portion 20 on the head side X1. When lying on one's back, the portions 42b1 to 42d1 of the serratus posterior superior muscle 42, which vertically overlaps the scapula SC, are likely to be compressed. By supporting the part of the scapula SC corresponding to the portion SC1 on the leg side X2 from the serratus posterior superior muscle 42 at a height position equal to or higher than the reference plane 100, the scapula SC can be moved without compressing the serratus posterior superior muscle 42. At the upper posterior serratus stepped portion 19 lower than the reference plane 100, the body pressure of the portion corresponding to the superior posterior serratus 42 can be made relatively lower than the body pressure from the reference plane 100. , the compression of the superior serratus posterior muscle 42 can be avoided. As a result, the serratus posterior superior muscle 42 is not disturbed by the repulsive force of the mat 1, and the rib group forming the ribcage can be smoothly pulled up during inspiration, making it possible to perform inspiration easily. . Moreover, since the leg side support portion 21 is higher than the portion of the scapula support portion 20 on the head side X1 relative to the leg side support portion 21, the upper rotation of the scapula SC (that is, the shoulder The leg-side portion SC1 of the scapula SC rotates outward in the width direction Y and toward the head side X1), and at the same time, the clavicle and rib cage move toward the head side, so inhalation when lying on the back is facilitated. It gets easier.

(2)
In the mat 1 of this embodiment, the back support part 3 is arranged below a part of the back of a supine person corresponding to a portion where two or more thoracic vertebrae including at least the sixth thoracic vertebrae T6 of the spinal column SP are continuous. It further has a thoracic stepped portion 23 recessed lower than the reference surface 100 of the support portion 3 .

In the supine position, the vicinity of the sixth thoracic vertebra T6 of the spinal column SP is likely to be compressed. It is possible to partially reduce the body pressure on a portion where two or more thoracic vertebrae including the sixth thoracic vertebrae T6 are continuous. As a result, continuous movement of the entire spinal column SP can be maintained while lying on one's back, and breathing can be reliably maintained while lying on one's back.

(3)
In the mat 1 of the present embodiment, each of the pair of serratus posterior superior stepped portions 19 is formed in a range located between the spine SP and the scapula SC of the supine person in each of the pair of serratus posterior superior muscles 42. ing.

The portion of the serratus posterior superior muscle 42 located between the spine SP and the scapula SC has a large degree of contraction and extension, and greatly contributes to pulling up the rib group during inspiration. Therefore, in this configuration, the serratus posterior muscle step portion 19 is formed in a range located between the spine SP and the scapula SC in each of the pair of serratus posterior muscles 42, so that the ribs at the serratus posterior superior muscle 42 It is possible to reliably avoid the compression of the part that greatly contributes to pulling up the group, and it is possible to promote breathing more reliably.

(4)
In the mat 1 of the present embodiment, the back support part 3 includes a portion corresponding to a portion of the back of a supine person where three or more thoracic vertebrae including at least the first thoracic vertebrae T1 to the third thoracic vertebrae T3 of the spinal column SP are continuous. Further provided is a thoracic spine support 18 for continuous support. The thoracic spine support portion 18 is positioned between a pair of serratus posterior superior stepped portions 19 .

In such a configuration, the thoracic spine supporting portion 18 continuously supports a portion corresponding to three or more continuous thoracic vertebrae including at least the first thoracic vertebrae T1 to the third thoracic vertebrae T3 of the spinal column SP. It is possible to make a flexible movement of the entire spinal column SP continuous to the thoracic vertebrae and prevent the ribs connected to the thoracic vertebrae from stopping during breathing. This makes it possible to simultaneously achieve avoidance of compression of the serratus posterior superior muscle 42 and supple movement in the upper part of the spine SP, thereby facilitating breathing of the supine person.

(5)
In the mat 1 of the present embodiment, the scapula supporting portion 20 is arranged below the portion corresponding to the head side X1 portion of the scapula SC (specifically, the portion including the scapular spine SC2), and is positioned below the reference plane. It further has a head side step 22 recessed lower than 100 . This makes it easier to rotate the scapula SC upward when lying on the back, and also makes it easier to move the clavicle and the ribcage toward the head, thereby making it easier to inhale while lying on the back.

(6)
In the mat 1 of the present embodiment, the leg-side support portion 21 of the scapula support portion 20 positions the portion of the scapula SC corresponding to the portion SC1 on the leg side X2 of the serratus posterior superior muscle 42 at a position higher than the reference plane 100. to support. As a result, pressure on the superior serratus posterior muscle 42 can be reliably avoided, and upward rotation of the scapula becomes easier. As a result, it becomes easier to inhale while lying on your back.

(Modification)
(A)
Although the mat 1 of the above embodiment includes the thoracic spine support portion 18 between the pair of serratus posterior superior stepped portions 19, the present invention is not limited to this. When the area of the pair of serratus posterior superior stepped portions 19 is relatively small, the thoracic spine support portion 18 may be absent and the pair of serratus posterior superior stepped portions 19 may be connected. That is, the pair of serratus posterior superior stepped portions 19 may be continuous across the portion corresponding to the spinal column SP of the back of the supine person.

According to such a configuration, the pair of serratus posterior superior stepped portions 19 are continuous across the region corresponding to the spinal column SP, thereby avoiding pressure on the spinal column SP. Breathing can be promoted by eliminating the pressure on the body.

(B)
In the above embodiment, the serratus posterior muscle step 19 is formed in a range located between the spine SP and the scapula SC, and the portion of the serratus posterior superior muscle 42 that overlaps the scapula SC (Fig. 7 42b1, 42c1, 42d1) are supported by the scapula support 20, but the invention is not so limited. In the present invention, it may be arranged below a portion corresponding to at least a portion of the portion corresponding to the superior serratus posterior muscle 42 . Therefore, as a modification of the present invention, the serratus posterior superior step portion 19 covers the entire serratus posterior superior muscle 42 including the portions overlapping the scapula SC (see portions 42b1, 42c1, and 42d1 in FIG. 7). It may be formed into a range.

Furthermore, although the substantially rectangular posterior serratus stepped portion 19 is disclosed in the above embodiment, the shape of the posterior superior serratus stepped portion 19 is not particularly limited in the present invention. Therefore, considering that the formation range of the upper posterior serratus 42 has a substantially parallelogram shape, the upper posterior serratus stepped portion 19 corresponding to the formation range of the upper posterior serratus 42 is substantially a parallelogram. It may be in the shape of a shape.

<Summary of embodiment>
It is as follows when the said embodiment is put together.

The mat according to the above embodiment is a mat provided with a back support for supporting the back of a supine person, wherein the back support includes at least one of each of a pair of left and right serratus posterior superioris muscles of the supine person. A pair of steps of the serratus posterior superior muscle arranged below the part corresponding to the upper part of the back support part and recessed lower than the reference plane constituting the upper surface of the back support part, and corresponding to the pair of left and right shoulder blades of the person lying on his/her back. and a pair of scapula support parts for supporting the scapula, wherein the pair of scapula support parts extend the part of the scapula corresponding to the leg-side portion of the serratus posterior superior above the reference plane. It has a leg-side support part that supports at a height position, and the leg-side support part is configured to be higher than the head-side portion of the scapula support part than the leg-side support part. characterized by

According to such a configuration, a pair of serratus posterior superior stepped portions are provided below portions corresponding to at least a part of each of the pair of serratus posterior superior muscles of a person lying on their back, and the serratus posterior superior stepped portions support the back. It is recessed lower than the reference plane that constitutes the upper surface of the part. In addition, the scapula supporting part has a leg side supporting part that supports a portion of the scapula that corresponds to the leg side of the serratus posterior superior muscle at a height position equal to or higher than the reference plane, and the leg side supporting part , is higher than the portion of the scapula support that is closer to the head than the leg-side support. When the upper part of the back is supine, the serratus posterior superior muscle that overlaps the scapula vertically is likely to be compressed. By supporting the part corresponding to the part on the leg side of the muscle at a height above the reference plane, the scapula is supported without compressing the superior posterior serratus muscle, and the superior posterior serratus muscle is lower than the reference plane. By lowering the body pressure of the portion corresponding to the superior serratus posterior muscle at the stepped portion to the body pressure from the reference plane, it is possible to avoid pressure on the superior serratus posterior muscle. As a result, the serratus posterior superior muscle is not disturbed by the repulsive force of the mat, and the rib group that forms the ribcage can be smoothly pulled up during inspiration, making it possible to perform inspiration easily. Moreover, since the leg-side supporting portion is higher than the head-side portion of the scapula supporting portion, the upper rotation of the scapula (that is, the leg-side portion of the scapula) is This makes it easier for the body to rotate outward in the width direction and toward the head side), and along with this, it also facilitates the movement of the clavicle and the ribcage toward the head side, making it easier to inhale while lying on the back.

In the above mat, the back support part is arranged below a portion of the back of the supine person corresponding to a portion where two or more thoracic vertebrae including at least the sixth thoracic vertebra of the spinal column are continuous, and is positioned below the reference plane. Preferably, it further has a low recessed thoracic step.

When lying on one's back, the vicinity of the 6th thoracic vertebrae of the spinal column is likely to be compressed. It becomes possible to partially reduce the body pressure on a portion where two or more thoracic vertebrae are continuous. As a result, it is possible to maintain continuous movement of the entire spinal column while lying on one's back, and to reliably maintain breathing while lying on one's back.

In the above mat, each of the pair of stepped portions of the serratus posterior superior muscle is formed in a range located between the spinal column of the supine person and the scapula of each of the pair of serratus posterior superior muscles. preferable.

Among the serratus posterior superior muscle, the part located between the spine and the scapula has a large degree of contraction and extension, and greatly contributes to pulling up the rib group during inspiration. Therefore, in this configuration, the stepped portion of the serratus posterior superior muscle is formed in a range located between the spine and the scapula of each of the pair of serratus posterior superior muscles, thereby pulling up the rib group in the serratus posterior superior muscle. It is possible to reliably avoid the compression of the part that contributes greatly, and it is possible to promote breathing more reliably.

In the above-mentioned mat, the back supporting portion continuously covers a portion of the back of the supine person corresponding to three or more consecutive cervical vertebrae and thoracic vertebrae including at least the first to the third thoracic vertebrae of the spinal column. It is preferable that the thoracic spine support part is further provided for supporting the thoracic spine, and that the thoracic spine support part is positioned between the pair of serratus posterior superior stepped parts.

In such a configuration, the thoracic spine supporting portion continuously supports a portion corresponding to a portion where three or more thoracic vertebrae are continuous, including at least the first to third thoracic vertebrae of the spine, so that the spine that is continuous with the thoracic spine during respiration. It allows the whole body to move supplely and prevents the ribs connected to the thoracic spine from stopping during breathing. This allows simultaneous avoidance of compression of the serratus posterior superior muscle and supple movement in the upper part of the spine to be achieved, facilitating breathing in the supine person.

In the above mat, the pair of serratus posterior superior stepped portions may be continuous across the portion corresponding to the spinal column of the back of the person lying on their back.

According to such a configuration, the pair of serratus posterior superior stepped portions are continuous across the region corresponding to the spinal column, thereby making it possible to avoid pressure on the spinal column, thereby reducing the pressure on the spinal column. is eliminated, making it possible to promote respiration.

In the mat described above, it is preferable that the scapula supporting portion further includes a head-side stepped portion that is located below the portion corresponding to the head-side portion of the scapula and is recessed lower than the reference plane.

This configuration makes it easier to rotate the scapula upward while lying on your back, and at the same time, makes it easier to move the clavicle and ribcage toward the head, making it easier to inhale while lying on your back.

In the mat described above, it is preferable that the leg-side supporting portion supports a portion of the scapula corresponding to the leg-side portion of the serratus posterior superior at a position higher than the reference plane.

With this configuration, it is possible to reliably avoid pressure on the superior serratus posterior muscle, and the upward rotation of the scapula becomes easier. As a result, it becomes easier to inhale while lying on your back.

The mat of this embodiment configured as described above can facilitate breathing when lying on one's back.

Claims

A mat with a back support for supporting the back of a supine person,
The back support is
A pair of serratus posterior superior muscles arranged below portions corresponding to at least a part of each of the left and right pair of serratus posterior superior muscles of the supine person and recessed lower than a reference plane constituting the upper surface of the back support part a stepped portion;
a pair of scapula support parts for supporting portions corresponding to the pair of left and right scapula of the supine person;
with
The pair of scapula support parts has a leg-side support part that supports a portion of the scapula that corresponds to a portion of the scapula on the leg side of the serratus posterior superior muscle at a height position equal to or higher than the reference plane,
The leg-side support portion is configured to be higher than a head-side portion of the scapula support portion relative to the leg-side support portion,
A mat characterized by:
The mat according to claim 1,
The back support part is arranged below a portion of the back of the supine person corresponding to a portion where two or more thoracic vertebrae including at least the sixth thoracic vertebrae of the spinal column are continuous, and the thoracic vertebrae are recessed lower than the reference plane. further having a stepped portion,
A mat characterized by:
In the mat according to claim 1 or 2,
Each of the pair of serratus posterior superior stepped portions is formed in a range located between the spine of a supine person and the scapula of each of the pair of serratus posterior superior muscles,
A mat characterized by:
In the mat according to any one of claims 1 to 3,
The back support part continuously supports a portion of the back of the supine person corresponding to a portion of three or more thoracic vertebrae including at least the first to the third thoracic vertebrae of the spine. further prepared,
The thoracic spine support portion is located between the pair of serratus posterior superior stepped portions,
A mat characterized by:
In the mat according to any one of claims 1 to 4,
The pair of serratus posterior superior stepped portions are continuous with each other across a portion corresponding to the spinal column of the back of the supine person,
A mat characterized by:
In the mat according to any one of claims 1 to 5,
The scapula support further has a head-side stepped portion that is located below a portion corresponding to the head-side portion of the scapula and recessed lower than the reference plane,
A mat characterized by:
In the mat according to any one of claims 1 to 6,
The mat, wherein the leg-side supporting portion supports a portion of the scapula that corresponds to a leg-side portion of the serratus posterior superior at a position higher than the reference plane.