A prosthetic device configured for surgical implantation including at least a part of an electronic and/or electromechanical device and comprising an outer chamber, compartment, or bladder; an inner chamber, compartment, or bladder inside the outer chamber, compartment, or bladder; an internal sipe separating at least a part of the outer chamber, compartment, or bladder and at least a part of the inner chamber, compartment, or bladder and a Faraday cage. The internal sipe is formed by at least a portion of an inner surface of the outer chamber, compartment, or bladder and at least a portion of an outer surface of the inner chamber, compartment, or bladder. The inner and outer surface portions forming the internal sipe oppose each other and can move relative to each other in a sliding motion. At least a portion of an outer surface of the outer chamber, compartment, or bladder is proximate to an outer surface of the prosthetic device.

The present invention is a method for manufacturing inflatable articles, or bladders for inflatable articles, that is time-efficient, simple, inexpensive and permits the uninterrupted manufacture of numerous and even customized article or bladder configurations and sizes, without expensive configuration-specific, metal tooling. The method includes the steps of applying a barrier material to a side of a first film, providing a second film with the first film so that the barrier material is disposed between the first and second films, adhering the first film to the second film so that the films are sealed together in areas except where the barrier material has been applied to form at least one inflatable compartment and sealed peripheral edge, and cutting along the sealed peripheral edge to form an inflatable article or bladder for use in an article of manufacture. The barrier material may be a paint, ink, paper or surface treatment that effectively prevents the first film from adhering to the second. The inflatable article or bladder of the present invention may be used as or in athletic equipment, for example, including footwear.

An article of footwear may include an upper with an outer layer, an inner layer, and a chamber element positioned at least partially between the outer layer and the upper layer. The chamber element may be formed of two layers of a transparent colored polymer material and may be sealed to enclose a fluid. The chamber element may also have a plurality of subchambers. The outer layer may have a plurality of apertures. Each subchamber may protrude at least partially through a corresponding one of the apertures.

Devices with internal flexibility sipes, such as slits, provide improved flexibility, improved cushioning to absorb shock and/or shear forces, and improved stability of support. Siped devices can be used in any existing product that provides or utilizes cushioning and stability. These products include human and other footwear, both soles and uppers, as well as orthotics; athletic, occupational and medical equipment and apparel; padding or cushioning, such as for equipment or tool handles, as well as furniture; balls; tires; and any other structural or support elements in a mechanical, architectural, or any other product.

An adjustment system for an article of footwear includes a body attached to an outer surface of the article of footwear and including a plurality of segments cooperating to define a chamber, the body movable between an elongated state and a collapsed state and a bladder attached to the article of footwear and defining an interior void in fluid communication with the chamber, the bladder movable from a relaxed state to a constricted state when the body is moved from the collapsed state to the elongated state.

An adjustment element for an article of footwear includes a bladder having a barrier layer defining an interior void and a compressible component disposed within the interior void and including a lattice structure defining a plurality of reliefs formed in the lattice structure, the compressible component operable between an expanded state when the interior void includes a first pressure and a contracted state when the interior void includes a second pressure.

Footwear upper components include a fabric element and a bladder component that defines a sealed interior chamber. The bladder component includes: (a) a first major surface engaged with the fabric element, wherein this first major surface defines at least part of a first perimeter seam surface and at least part of a first surface of the sealed interior chamber, (b) a second major surface opposite the first major surface, wherein this second major surface defines at least part of a second perimeter seam surface opposite the first perimeter seam surface and at least part of a second surface of the sealed interior chamber opposite the sealed interior chamber's first surface, and (c) and a fluid chamber between the first and second major surfaces. The first major surface (and optionally the second major surface) may include texturing, e.g., texturing corresponding to texture present on a surface of the fabric element.

A bladder for an article of footwear includes a first chamber having a first segment extending along a first side of the bladder and a second segment formed on an opposite side of the bladder from the first segment. The bladder further includes a second chamber at least partially surrounded by the first chamber and disposed between the first segment and the second segment. A manifold is in direct fluid communication with each of the first segment of the first chamber, the second segment of the first chamber, and the second chamber. A web area connects each of the first chamber, the second chamber, and the manifold. The bladder may include a first series of ports formed in the first segment of the first chamber and a second series of ports formed in the second segment of the first chamber.

An adjustment element for an article of footwear includes a bladder having a barrier layer defining an interior void and a compressible component disposed within the interior void and including a lattice structure defining a plurality of reliefs formed in the lattice structure, the compressible component operable between an expanded state when the interior void includes a first pressure and a contracted state when the interior void includes a second pressure.

Footwear upper components include a fabric element and a bladder component that defines a sealed interior chamber. The bladder component includes: (a) a first major surface engaged with the fabric element, wherein this first major surface defines at least part of a first perimeter seam surface and at least part of a first surface of the sealed interior chamber, (b) a second major surface opposite the first major surface, wherein this second major surface defines at least part of a second perimeter seam surface opposite the first perimeter seam surface and at least part of a second surface of the sealed interior chamber opposite the sealed interior chamber's first surface, and (c) and a fluid chamber between the first and second major surfaces. The first major surface (and optionally the second major surface) may include texturing, e.g., texturing corresponding to texture present on a surface of the fabric element.