A weight-bearing apparatus such as a cushion, prosthetic device, or bed mattress includes a support surface having a shaped or sculpted portion that conforms to the shape of a body portion being supported. The shaped portion fits to the body portion, thereby to position the body portion so as to situate...http://www.google.com/patents/US6224623?utm_source=gb-gplus-sharePatent US6224623 - Support apparatus which cradles a body portion for application of localized cooling to high contact-pressure body surface areas
