TRAUTWEIN, FRANK THILO,HEUER, FRANK,OHNMACHT, TIMO
申请号：
CA2955880
公开号：
CA2955880A1
申请日:
2015.07.15
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
The invention relates to an osteosynthesis device comprising a bone screw (12) which has a threaded shaft (24) and a ball head (26) a fork head (14) which has a groove (32) and two limbs (34), said ball head being pivotally mounted in the fork head and a pressure piece (16) which sits on the ball head. The pressure piece is supported on the fork head and has two lateral flanks (48) which extend in the axial direction (30) of the fork head and away from the threaded shaft. The pressure piece (16) is mounted in the fork head so as to be pretensioned in the axial direction and thus in the direction towards the ball head, wherein at least one of the flanks is slotted transversely to the axial direction of the fork head such that a slot (50) forms a spring tongue (52) and the pressure piece is thereby formed in a resilient manner. A protrusion (70) protrudes into the slot (50) in the axial direction (30) and forms a stop (72), which acts in the axial direction, for the spring tongue in order to restrict a deformation or deflection of the spring tongue.
