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Publication Number
US-11752038-B2
Publication Date
2023-09-12
Expiration Date
Abstract
A knit hemostatic bandage provided herein can include a continuous rayon fiber and a continuous glass fiber. The knit hemostatic bandage can have a gauge of between 10 and 30 stitches per inch. The knit hemostatic bandage can have a Young's modulus of elasticity of less than 50 MPa.
Core Innovation
The disclosed invention relates to a knit hemostatic bandage that combines a continuous secondary fiber and a continuous glass fiber into rows of multiple stitches. Each stitch comprises a loop of the continuous secondary fiber and a loop of the continuous glass fiber, with the loop orientations alternating between a first configuration and a second configuration between the first and second faces of the knit hemostatic bandage.
The knit hemostatic bandage is provided with an overall Young’s modulus of elasticity between 0.05 MPa and 1 MPa. This low overall modulus is attributed to a relative motion of the loops of the continuous secondary fiber and the loops of continuous glass fiber that occurs responsive to deformation of the knit hemostatic bandage.
Claims Coverage
The independent claims cover a knit hemostatic bandage and a method of making the knit hemostatic bandage. The claims center on alternating first and second configurations of secondary-fiber and glass-fiber loops between the first and second faces, specified Young’s modulus ranges for the continuous secondary fiber and the continuous glass fiber, and an overall modulus of 0.05 MPa to 1 MPa produced by deformation-responsive relative motion of the loops.
Alternating loop orientation between first and second faces
Each stitch comprises a loop of the continuous secondary fiber and a loop of the continuous glass fiber, with stitches in each row alternating between a first configuration and a second configuration, and the loops disposed toward opposite faces.
Specified fiber Young’s modulus ranges
The continuous secondary fiber has a Young’s modulus of elasticity of between 1 GPa and 30 GPa and the continuous glass fiber has a Young’s modulus of elasticity of between 70 GPa and 75 GPa.
Overall low Young’s modulus from deformation-responsive relative loop motion
Relative motion of the loops of the continuous secondary fiber and the loops of continuous glass fiber occurs responsive to deformation, providing an overall Young’s modulus of elasticity of between 0.05 MPa and 1 MPa.
Knit-hemostatic bandage method
The method of making the knit hemostatic bandage includes knitting the continuous secondary fiber and the continuous glass fiber into rows, with each stitch comprising a loop of each fiber and the overall modulus provided by deformation-responsive relative loop motion.
The independent claims share alternating loop orientations between the first and second faces, specified modulus ranges for the two fibers, and an overall bandage modulus of 0.05 MPa to 1 MPa due to deformation-responsive relative motion of the loops.
Stated Advantages
Provides a knit hemostatic bandage having an overall Young’s modulus of elasticity between 0.05 MPa and 1 MPa.
Provides deformation-responsive relative motion of the loops of the continuous secondary fiber and the loops of continuous glass fiber.
Documented Applications
Hemostatic use as a knit hemostatic bandage.
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