Abstract: A chair back has a shell and a cushion overlying the shell for a patient chair configured to move from a generally upright sitting position to a generally supine position. A patient contact surface is bounded in part by a top edge and an opposing bottom edge, and has resiliently deflectable opposed wing sections extending between the top edge and the bottom edge. A stiff support region is centrally positioned relative to and at least partially recessed from the outer wing sections. The support region is configured to support a patient's spine when the patient chair is positioned in a generally supine position. The opposed wing sections extend laterally outwardly of the support region and are configured to support the arms of the patient when the patient chair is positioned in the generally supine position.

Abstract: A chair back has a shell and a cushion overlying the shell for a patient chair configured to move from a generally upright sitting position to a generally supine position. A patient contact surface is bounded in part by a top edge and an opposing bottom edge, and has resiliently deflectable opposed wing sections extending between the top edge and the bottom edge. A stiff support region is centrally positioned relative to and at least partially recessed from the outer wing sections. The support region is configured to support a patient's spine when the patient chair is positioned in a generally supine position.

Abstract: A back for a patient chair with which a patient may be moved from a generally upright sitting position to a generally supine position comprises a back shell and a cushion. The back shell has a front surface, a back surface, a top, a bottom, opposed first and second outer sides, a central section extending longitudinally from a region adjacent the top to a region adjacent the bottom and opposed side sections extending laterally outwardly from the central section toward the first and second outer sides. The cushion is attached to the back shell. The central section of the back shell comprises a plurality of stiffening elements that extend longitudinally of the back shell. A patient chair including the back is also described.

Abstract: A back for a patient chair having a back shell with a substantially rigid central S-shaped central portion and laterally extending wing portions which have sufficient flexibility to allow deflection in the direction of the front surface upon imposition of a force. The back consists of a formed back shell, a cushion layer laid thereover and an upholstery layer covering the cushion, with the upholstery layer adhered to the cushion and having edge margins wrapped around the outer edge margins of the cushion. The cushion and upholstery material are secured to the back shell through adhesive applied between the wrapped over edge margin portions of the upholstery material and the back shell.