Abstract: An inflatable extremity elevation device is provided. The device includes an outer shell which forms an inflatable air chamber. The outer shell includes a support surface extending from a proximal end to an elevated distal end. An adjustable attachment mechanism can be arranged on the outer shell. From the proximal end to the elevated distal end, the support surface can form a concave support surface portion, a substantially planar support surface portion, and a convex support surface portion. The adjustable attachment mechanism can secure a portion of an extremity against the substantially planar support surface portion such that a distal jointed portion of the extremity can naturally come to rest on the convex support surface portion. The device helps prevent excessive pre- and post-operative swelling of an extremity by allowing the extremity to heal in a natural elevated resting position.

Abstract: Apparatus and system for cathodic protection of a metal structure in the sea by sacrificial anodes. The apparatus has at least one anode of a first type for which the current flow is greater than 10 Amperes/meter.sup.2, with potentials on the order of -900 mV/ECS and has at least one anode of a second type for which the current flow is less than 6 Amperes/meter.sup.2, with potentials in the order of -900 mV/ECS, the absolute values of the decomposition potential under load of the anodes of the first and of the second type being greater (more negative) than the absolute value of the potential of the protected structure. Such a system can assure the protection of a metal structure in the sea for several dozen years.