Patent ID: 6244272
Filing Date: 2001-06-12
Classification: A61G,B32B,G01B

Abstract:
An apparatus for supporting a patient having a position measuring device, including an impedance varying element and a multilayer, flexible film of a thin metal foil movable and deformable in space that cooperates with said impedance varying element, said flexible film comprising:an electrically conductive, flexible, active, central layer having a coefficient of elasticity, a flexibility, and two main faces of large area, a first face and a second face;at least one support layer formed of a synthetic material that is electrically insulating, and that has a coefficient of elasticity substantially similar to the coefficient of elasticity of the active central layer, the support layer being linked to the first face of the central layer; andat least one protective second layer, formed of an electrically insulating synthetic material, the second layer being linked to the second face of the central layer, the total thickness of the multi-layer film being predetermined to retain substantially completely the flexibility of the central layer.