Self-adjusting pressure relief support system and methodology

摘要

A pressure relief support system utilizes a self-adjusting approach to maintaining generally constant pressure in fluid support bladders. A constant force, such as from a constant force linear spring or from a counterweight system, is applied directly to a fluid support bladder or to a reservoir in fluid communication with such bladder. Plural self-adjusting arrangements may be provided in a single device for fabricating a support body with sectionalized support. Such arrangements may be incorporated into mattress support systems or into seating arrangements or other alternative uses. By appropriately selecting system components, such as the amount of the constant force applied, the original volume of fluid to which the force is applied, and the reservoir size, pressure dispersion for a patient or supported object of any type may be controlled at a predetermined generally constant point. By utilizing the potential energy of a constant force linear spring or equivalent arrangement, a self-adjusting system and methodology is provided which does not require any form of electronic control system for receiving sensory feedback or for operating pressure pumps or valving systems responsive to any such feedback.