Mat
A mattress is designed to facilitate breathing in a supine position. The mattress includes: two serratus posterior superior corresponding parts disposed below a region corresponding to a middle part between origin and insertion of each of left and right serratus posterior superior muscles of a human in a supine position; two scapula supporting sections; and a sixth thoracic vertebra corresponding part disposed below a region corresponding to an area including a sixth thoracic vertebra of a spine. The serratus posterior superior corresponding parts and the scapula supporting sections are configured such that body pressure from the serratus posterior superior corresponding parts is lower than body pressure from the scapula supporting sections. The sixth thoracic vertebra corresponding part is configured such that body pressure from the sixth thoracic vertebra corresponding part is lower than body pressure from a portion supporting a spine other than the sixth thoracic vertebra corresponding part.
1 . A mattress comprising a back supporting section that has a reference surface configured to support a back of a human user in a supine position, the back supporting section comprising:
a pair of serratus posterior superior corresponding parts that are each configured to be disposed below a region corresponding to at least a middle part between origin and insertion of each of a pair of left and right serratus posterior superior muscles of the user in the supine position;
a pair of scapula supporting sections disposed outside the pair of the serratus posterior superior corresponding parts in a width direction of a body of the user and configured to support regions corresponding to a pair of left and right scapulae of the user in the supine position; and
a sixth thoracic vertebra corresponding part configured to be disposed below a region corresponding to an area of two or more consecutive thoracic vertebrae including at least a sixth thoracic vertebra of a spine at the back of the user in the supine position,
wherein the serratus posterior superior corresponding parts and the scapula supporting sections are configured such that a body pressure of the user on the serratus posterior superior corresponding parts is lower than a body pressure of the user on the scapula supporting sections,
the pair of the serratus posterior superior corresponding parts are disposed on respective opposite sides of a spine supporting portion configured to support the spine of the user,
the pair of the serratus posterior superior corresponding parts and the sixth thoracic vertebra corresponding part are arranged in a fixed disposition so that a body pressure of the user on the sixth thoracic vertebra corresponding part is lower than a body pressure of the user on the spine supporting portion, the spine supporting portion being a portion other than the sixth thoracic vertebra corresponding part, and
an entirety of the back supporting portion is formed as one body.
2 . The mattress according to claim 1 , wherein
the scapula supporting sections are each at a level flush with or higher than the reference surface, and
the serratus posterior superior corresponding parts each comprise a first step area depressed farther than the reference surface such that the body pressure on the serratus posterior superior corresponding parts of the mattress is lower than the body pressure on the scapula supporting sections of the mattress.
3 . The mattress according to claim 2 , wherein
the scapula supporting sections each further comprise a second step area that is configured to be disposed below a region corresponding to at least a part of a scapular spine of the user at an end on a head side of a respective one of the left and right scapulae of the user, the second step area being depressed farther than the reference surface.
4 . The mattress according to claim 2 , wherein
the back supporting section further comprises a pair of serratus posterior inferior corresponding parts that are each configured to be disposed below a region corresponding to at least a middle part between origin and insertion of a respective one of a pair of left and right serratus posterior inferior muscles of the user in the supine position, and
the serratus posterior inferior corresponding parts are configured such that a body pressure of the user on the serratus posterior inferior corresponding parts is lower than a body pressure of the user on a portion of the back supporting section other than the serratus posterior inferior corresponding parts.
5 . The mattress according to claim 2 , wherein
the back supporting section further comprises a levator scapula pressing part that is configured to be located outside a middle place of a levator scapula muscle of the user in the supine position in the width direction of the body of the user, and that is configured to be disposed at a place where the levator scapula muscle is allowed to be pressed from outside to inside in the width direction of the body of the user.
6 . The mattress according to claim 1 , wherein
the back supporting section further comprises a pair of serratus posterior inferior corresponding parts that are each configured to be disposed below a region corresponding to at least a middle part between origin and insertion of a respective one of a pair of left and right serratus posterior inferior muscles of the user in the supine position, and
the serratus posterior inferior corresponding parts are configured such that a body pressure of the user on the serratus posterior inferior corresponding parts is lower than a body pressure of the user on a portion of the back supporting section other than the serratus posterior inferior corresponding parts.
7 . The mattress according to claim 6 , wherein
the serratus posterior inferior corresponding parts each comprise a step area depressed farther than the reference surface.
8 . The mattress according to claim 6 , wherein
the back supporting section further comprises a pair of rib pressing parts that are configured to be disposed outside the pair of the serratus posterior inferior corresponding parts in the width direction of the body of the user and that are configured to be located below regions corresponding to pairs of at least eighth ribs and ninth ribs of the user in the supine position, the pair of the rib pressing parts protruding upward beyond the reference surface and being configured to press ribs including the eighth ribs and the ninth ribs of the user from below.
9 . The mattress according to claim 1 , wherein
the back supporting section further comprises a levator scapula pressing part that is configured to be located outside a middle place of a levator scapula muscle of the user in the supine position in the width direction of the body of the user, and that is configured to be disposed at a place where the levator scapula muscle is allowed to be pressed from outside to inside in the width direction of the body of the user.
10 . The mattress according to claim 9 , wherein
the levator scapula pressing part protrudes upward beyond the reference surface and is configured to press the levator scapula muscle at a place higher than the reference surface from outside to inside in the width direction of the body of the user.
11 . The mattress according to claim 1 , wherein
one of the pair of the scapula supporting sections comprises:
a first leg side supporting section configured to support a region corresponding to a part of the left scapula of the user nearer to a leg side of the user than the left serratus posterior superior muscle of the user at a level equal to or higher than the reference surface; and
a first head side corresponding part configured to be located nearer to a head side of the user than the first leg side supporting section,
wherein the other of the pair of the scapula supporting sections comprises:
a second leg side supporting section configured to support a region corresponding to a par of the right scapula of the user nearer to the leg side of the user than the right serratus posterior superior muscle of the user at a level equal to or higher than the reference surface; and
a second head side corresponding part configured to be located nearer to the head side of the user than the second leg side supporting section,
wherein the first leg side supporting section is relatively higher than the first head side corresponding part, and the second leg side supporting section is relatively higher than the second head side corresponding part.
12 . The mattress according to claim 11 , wherein
the first leg side supporting section protrudes upward beyond the reference surface and is configured to support the region corresponding to the part of the left scapula of the user nearer to the leg side of the user than the left serratus posterior superior muscle of the user at a level higher than the reference surface, and
the second leg side supporting section protrudes upward beyond the reference surface and is configured to support the region corresponding to the part of the right scapula of the user nearer to the leg side of the user than the right serratus posterior superior muscle of the user at a level higher than the reference surface.
13 . The mattress according to claim 11 , wherein
the first head side corresponding part comprises a step area that is depressed farther than the reference surface, and that is configured to be located below a part of the left scapula of the user overlapping the left serratus posterior superior muscle of the user, and
the second head side corresponding part comprises a step area that is depressed farther than the reference surface, and that is configured to be located below a part of the right scapula of the user overlapping the right serratus posterior muscle of the user.
14 . The mattress according to claim 1 , wherein
the sixth thoracic vertebra corresponding part comprises a first step area that is depressed farther than the reference surface.
15 . The mattress according to claim 14 , wherein
the scapula supporting sections each further comprise a second step area that is configured to be disposed below a region corresponding to at least a part of a scapular spine of the user at an end on a head side of a respective one of the left and right scapulae of the user, the second step area being depressed farther than the reference surface.
16 . The mattress according to claim 14 , wherein
the back supporting section further comprises a levator scapula pressing part that is configured to be located outside a middle place of a levator scapula muscle of the user in the supine position in the width direction of the body of the user, and that is configured to be disposed at a place where the levator scapula muscle is allowed to be pressed from outside to inside in the width direction of the body of the user.
17 . The mattress according to claim 14 , wherein
the back supporting section further comprises a pair of serratus posterior inferior corresponding parts that are each configured to be disposed below a region corresponding to at least a middle part between origin and insertion of a respective one of a pair of left and right serratus posterior inferior muscles of the user in the supine position, and
the serratus posterior inferior corresponding parts are configured such that a body pressure of the user on the serratus posterior inferior corresponding parts is lower than a body pressure of the user on a portion of the back supporting section other than the serratus posterior inferior corresponding parts.
18 . The mattress according to claim 1 , wherein
the serratus posterior superior corresponding parts and the scapula supporting sections are set at a level flush with the reference surface, and
the serratus posterior superior corresponding parts are made of a material of a degree of hardness lower than a degree of hardness of the scapula supporting sections such that the body pressure on the serratus posterior superior corresponding parts of the mattress is lower than the body pressure on the scapula supporting sections of the mattress.
19 . The mattress according to claim 1 , wherein
the scapula supporting sections each further comprise a step area that is configured to be disposed below a region corresponding to at least a part of a scapular spine of the user at an end on a head side of a respective one of the left and right scapulae of the user, the step area being depressed farther than the reference surface.