A bearing supports a rotating element. The bearing comprises an inner annular body and an outer annular body about the inner annular body. A bearing surface, which is located between the inner annular body and the outer annular body, supports the outer annular body for rotation about the inner annular...http://www.google.fr/patents/US6344020?utm_source=gb-gplus-shareBrevet US6344020 - Bearing and umbilicus gimbal with bearing retainer in blood processing system
Bearing and umbilicus gimbal with bearing retainer in blood processing system
