Abstract: A variety of pneumatic and other components assembled to afford comfort not found in conventional furniture as follows: a pneumatic cushion exchanging air through a bladder support into two independent bladders where upon depression by persons or other subsequence weight applied to the cushion evenly supports the weight applied. The inner and outer bladder operate independently receiving and compressing air through the cushion and bladder air transfer valves. This independent action allows frontal support when weight is applied to the frontal areas only. In addition to the frontal support a molded plastic material termed herein as the bladder support having memory after thermal molding offers additional front support when weight is applied. When weight or a person is fully seated both bladders are expanded as the air is expelled from the cushion through two air valves serving each of two independent bladders offering uniform seating support.

Abstract: An ophthalmic aspirator-irrigator system for use during cataract surgery is disclosed. The system frees both hands of the surgeon for the surgical tasks and leaves the automatic operation of the system to a single control input operated by a foot pedal. The pedal controls both the aspiration and ejection functions as well as their respective speeds. The ophthalmic aspirator-irrigator system essentially comprises a hand-held device, a control box operable by the foot pedal and a power cord connecting the device with the box. A source of fluid is connected via a tube to the device to effect the irrigation function. The control box includes a power source and a circuit coupled to the source and via the cord to the device. Preferably, the circuit includes a bridge output network controlled by a linear motion slide type potentiometer controlled by the foot pedal.

Abstract: An ophthalmic aspirator-irrigator system for use during cataract surgery is disclosed. The system frees both hands of the surgeon for the surgical tasks and leaves the automatic operation of the system to a single control input operated by a foot pedal. The pedal controls both the aspiration and ejection functions as well as their respective speeds. The opthalmic aspirator-irrigator system essentially comprises a hand-held device, a control box operable by the foot pedal and a power cord connecting the device with the box. A source of fluid is connected via a tube to the device to effect the irrigation function. The control box includes a power source and a circuit coupled to the source and via the cord to the device. Preferably, the circuit includes a bridge output network controlled by a linear motion slide type potentiometer controlled by the foot pedal.