Charles A. Howell;John Sparkman;Robert M. Zerhusen
发明人:
Robert M. Zerhusen,John Sparkman,Charles A. Howell
申请号：
US13280622
公开号：
US08701230B2
申请日:
2011.10.25
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A system to cause instability for a person supported by a person support surface is disclosed. The system is configured to cause the person supported by the person support surface to compensate for the instability caused by the system in order to exercise their core or trunk region.
