US 5,449,341 AGranted

Compression support braces

AssigneeBecton, Dickinson and Company

InventorAlvin R. Harris

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Abstract

A multisection composite material useful in forming compression braces for orthopedic support of a body part includes a user contacting fabric section, an outermost fabric section formed from bonding two dissimilar fabrics and an intermediate section formed from a closed cell foam. The user contacting fabric section is a fabric having multidimensional stretch properties formed from hydrophobic fibers and bonded to a surface of the intermediate foam section. The outermost section includes a first fabric layer having multidimensional stretch properties formed from hydrophilic fibers and a second fabric layer having multidimensional stretch properties formed from hydrophobic fibers. The intermediate foam section has a first surface and a second surface and a multiplicity of perforations therethrough from the first surface to the second surface. The foam has multidimensional elastic properties sufficient for providing compressive strain useful for supporting the body part. The first layer of the outermost section is bonded to the second surface of the intermediate section. The composite material has a direction of minimum stretch and a direction of maximum stretch. Moisture emitted from a user's skin passes through the hydrophobic user contacting section to the intermediate section whereupon it passes through the perforations and is spread by the hydrophilic first fabric layer. The invention includes compressive orthopedic support braces for the wrist, elbow, thigh, knee and ankle formed from the material of the invention in sizes suitable for users having different physical stature. A method for making braces with substantial uniformity of compressive support of the present invention includes identifying the direction of maximum stretch required in the design and cutting it to shape in alignment with the direction of maximum stretch in the material.

A multisection composite material useful in forming compression braces for orthopedic support of a body part comprising:

a user contacting fabric section formed from substantially hydrophobic fibers and having multidimensional stretch properties, said user contacting fabric being a longitudinally slit circular knit fabric having a minimum stretch in a longitudinal direction and an orthogonal maximum stretch direction said fiber being selected from the group consisting of nylon, polyester, polypropylene and blends thereof;
an intermediate section having a first surface and a second surface, said intermediate section formed from a closed cell foam having a multiplicity of perforations therethrough from said first surface to said second surface, said intermediate section having multidimensional elastic properties sufficient for providing compressive strain useful for support of the body part, said intermediate section first surface being bonded to a surface of said user contacting section and said second surface being bonded to said first fabric layer of said outermost section;
and
an outermost fabric section being a two layer longitudinally slit circular knit fabric formed from bonding two dissimilar fabrics comprising a first fabric layer having multidimensional stretch properties formed from hydrophilic fiber selected from the group consisting of cotton, wool, silk, viscose rayon and blends thereof, and a second fabric layer having multidimensional stretch properties formed from hydrophobic fiber selected from the group consisting of polyester, nylon, acrylic, polypropylene and blends thereof, said first fabric layer and said second fabric layer being bonded together by linkage of overlapping yarns and fibers of said first layer and said second layer, said outermost fabric section having a longitudinal direction of minimum stretch and an orthogonal maximum stretch direction, said first layer being bonded to said second surface of said intermediate foam section so that said outermost section maximum stretch direction is aligned with said maximum stretch direction of said user contacting section, said second layer thereby serving as an outer surface of said multisection composite.

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Abstract

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