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Otto Bock Vacuum Assisted Socket System

Coverage decision

L&I does not cover the Otto Bock Vacuum Assisted Socket System (VASS) device at this time because the published literature does not substantially show the device's effectiveness for maintaining limb volume.

The Otto Bock Vacuum Assisted Socket System includes a total surface bearing socket, urethane interface/liner, sealing sleeves and a vacuum pump/shock absorber.

The vacuum technology is intended to:

  1. Maintain a balanced volume in an amputee's residual limb.
  2. Minimize limb movement in the socket.
  3. Facilitate perspiration evaporation within the socket.
  4. Reduce friction between the limb, liner and socket.

PDF icon VASS technology assessment (99 KB PDF)


For more information:
Contact information.

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