Compression device for living being

Abstract

There is provided a compression device for living being, simply structured and capable of fitting a site to be measured of any size. The compression device includes an elastic plate formed in one piece and elastically holding a predetermined curvature, provided for preventing a fluid bag from expanding outwards. The elastic plate includes a first curvature substantially matching a lateral cross section of a thin site to be measured, a second curvature and a connection connecting the first and second curvatures together. The connection allows the second curvature to be arranged outwardly of a virtual extension of the first curvature substantially matching the lateral cross section of the thin site to be measured. The second curvature extends inwardly of a virtual extension of the connection extending toward the second curvature.

What is claimed is:  
     
         1 . A compression device for living being, comprising a fluid bag internal to said compression device, expanding and contracting when said fluid bag receives and discharges fluid, respectively, and an elastic plate formed in one piece and provided internal to said compression device, arranged outwardly of said fluid bag to prevent said fluid bag from expanding outwards, and also elastically holding a predetermined curvature, said elastic plate including a first curvature substantially matching a lateral cross section of a thin site to be measured, a second curvature and a connection connecting said first and second curvatures together, said connection allowing said second curvature to be arranged outwardly of a virtual extension of said first curvature substantially matching the lateral cross section of said thin site to be measured, said second curvature extending inwardly of a virtual extension of said connection extending toward said second curvature.  
     
     
         2 . The compression device of  claim 1 , wherein said second curvature is more distant inward from the virtual extension of said connection as said second curvature extends farther away from said connection.  
     
     
         3 . The compression device of  claim 1 , wherein when applied on a thick site to be measured said second curvature has a portion in contact with the thick site to be measured by at least a predetermined length to prevent said second curvature from having an end ingrowing into the thick site to be measured.  
     
     
         4 . The compression device of  claim 1 , wherein said first curvature is formed of a center, a portion of said first curvature adjacent to said center and closer to an end of said first curvature and a portion of said first curvature adjacent to said center and closer to said connection, and when applied on a thin site to be measured said portion of said first curvature closer to the end of said first curvature and said portion of said first curvature closer to said connection cooperate to produce elasticity toward a center of the thin site to be measured, as seen in lateral cross section, to clamp the thin site to be measured.  
     
     
         5 . The compression device of  claim 4 , wherein when applied on a thick site to be measured, said first curvature elastically deforms to widen an angle formed by said portion of said first curvature closer to the end of said first curvature, said center and said portion of said first curvature closer to said connection, and receiving said site to be measured, and said second curvature contacts said thick site to be measured and elastically deforms to widen an angle formed by said connection and said second curvature with a second connection located therebetween to connect said second curvature and said connection together, to create force exerted in a direction from a surface of said thick site to be measured toward the center of said thick site to be measured, as seen in cross section.  
     
     
         6 . A compression device for living being, comprising a fluid bag internal to said compression device, expanding and contracting when said fluid bag receives and discharges fluid, respectively, and an elastic plate formed in one piece and provided internal to said compression device, arranged outwardly of said fluid bag to prevent said fluid bag from expanding outwards, and also elastically holding a predetermined curvature, said elastic plate including a first curvature substantially matching a lateral cross section of a thin site to be measured, a second curvature and a connection connecting said first and second curvatures together, said connection as seen in cross section being either one of a linear connection provided in a straight line and an arcuate connection including a curvature concave outward.  
     
     
         7 . The compression device of  claim 6 , wherein said first curvature is arranged along at least half of an entire circumference of the lateral cross section of said thin site to be measured.  
     
     
         8 . The compression device of  claim 6 , wherein said first curvature is arranged along at least 70% of an entire circumference of the lateral cross section of said thin site to be measured.  
     
     
         9 . The compression device of  claim 6 , wherein said first curvature includes both ends clamping said site to be measured and a center located between said both ends and larger in thickness than said both ends.  
     
     
         10 . The compression device of  claim 6 , wherein when applied on a thick site to be measured said second curvature has a portion of at least a predetermined length exerting force directed from a surface of the thick site to be measured toward a center of the thick site to be measured as seen in lateral cross section.  
     
     
         11 . A compression device for living being, comprising a fluid bag internal to said compression device, expanding and contracting when said fluid bag receives and discharges fluid, respectively, and an elastic plate formed in one piece and provided internal to said compression device, arranged outwardly of said fluid bag to prevent said fluid bag from expanding outwards, and also elastically holding a predetermined curvature, said elastic plate including a first curvature substantially matching a lateral cross section of a thin site to be measured, a second curvature and a connection connecting said first and second curvatures together, when applied on a thick site to be measured said second curvature extending along a surface of the thick site to be measured and cooperating with said first curvature to create force to hold the thick site to be measured.