Liner for orthopedic or prosthetic device
AssigneeOssur Iceland Ehf
InventorZachariah J. Klutts
Life of this patent
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Abstract
A liner for an orthopedic or prosthetic device includes a core formed from a porous and compressible material, a first layer secured to the first side of the core and forming a first surface to the liner, and a second layer secured to the second side of the core and forming a second surface to the liner. The first and second layers may comprise different properties from one another and be formed from different materials including fabrics and polymeric materials. A polymeric film may be secured to the core or one of the layers to define at least part of a surface of the liner.
Claims16
A liner for an orthopedic device, comprising:
- a core formed from a porous and compressible open-celled polyurethane foam, the core having first and second surfaces;
- a first layer formed from an aqueous-based polyurethane emulsion and located along the first surface of the core;
- a second layer formed from a hook receivable material and has a first surface located directly adjacent to the second surface of the core;
- a polymeric film extending over a second surface of the second layer opposite the first surface of the second layer;
- wherein the core has greater rigidity than the first layer, both the core and the first layer are arranged for transfer of air and vapor through a combined thickness;
- wherein the polymeric film defines at least one opening exposing the second layer.
A liner for an orthopedic device, comprising:
- a core formed from a porous and compressible open-celled polyurethane foam, the core having first and second surfaces;
- a first layer formed from an aqueous-based polyurethane emulsion and located along the first surface of the core;
- a second layer formed from a hook receivable material and has a first surface located directly adjacent to the second surface of the core;
- wherein the core has greater rigidity than the first layer, both the core and the first layer are arranged for transfer of air and vapor through a combined thickness;
- wherein the core and the first layer are compressible, the second layer having greater frictional properties than the core such as having frictional resistance to forces by inhibiting sliding against a surface upon introduction of moisture;
- wherein the first layer has a fine porous structure enabling vapor transmission, while having a resilient compressible thickness;
- a polymeric film extending over a second surface of the second layer opposite the first surface of the core;
- wherein the polymeric film is a porous and breathable polyurethane film;
- wherein the polymeric film defines at least one opening exposing the second layer.
An orthopedic device, comprising:
- a frame element bearing at least one section of hook material having a predetermined shape along a first surface of the frame element;
- a liner having:
- a core formed from a porous and compressible open-celled polyurethane foam, the core having first and second surfaces;
- a first layer formed from an aqueous-based polyurethane emulsion and located along the first surface of the core;
- a second layer formed from a hook receivable material and has a first surface located directly adjacent to the second surface of the core;
- a polymeric film extending over a second surface of the second layer opposite the first surface of the second layer, the polymeric film defines at least one opening exposing the second layer corresponding to a predetermined shape of the at least one section of hook material having a predetermined shape;
- wherein the liner is arranged to secure to the frame element by engaging the second layer to the at least one section of hook material by matching the at least one opening to the at least one section of hook material.
Dependencies are inferred from the claim text.