The Vista Ankle is a single-axis prosthetic ankle joint designed for elevated vacuum suspension. The vacuum comes from the ankle movements during gait, i.e. cyclically from plantarflexion (PF) to dorsiflexion (DF). The barb is located inside the proximal tube clamp and thus the hose can be hidden in the pylon, which eliminates system failure caused by an unprotected hose-barb connection. Another feature of the Vista ankle is the distal female pyramid adapter that is compatible with a wide range of prosthetic feet.
The achievable vacuum level of the Vista Ankle is determined by how much the user compresses the PF bumper during gait, i.e. more compression of the PF bumper would result in higher vacuum of the socket. Prosthetists should take into account body weight, walking speed, and the pattern of heelstrike while adjusting the PF cushion toward the user’s preferred vacuum level. The maximum acheivable vacuum is 16 lbs.
Technical Specifications:
Height: 114 mm (4.5 inches)
Weight: 385 g (13.4 oz)
Max PF w/o bumper: 15°
Max DF w/o bumper: 8°
Weight Limit: 125 Kg (275 lbs.)
