ATKINSON, Patrick;KETTERING UNIVERISITY;LECRONIER, David
发明人:
LECRONIER, David,ATKINSON, Patrick
申请号：
USUS2011/040709
公开号：
WO2011/159902A3
申请日:
2011.06.16
申请国别(地区):
US
年份:
2012
代理人:
摘要：
An intramedullary nail (20) for insertion into the medullary canal (26) in a bone (24) surrounded by the cortex (28) and defines a bore (34) extending transverse to the intramedullary nail (20). A threaded fastener (22) extends along a fastener axis (A) and has a compression portion (48) having a compression portion diameter (DCP), and a threaded portion (50) having a threaded portion diameter (DTP) extending through a near cortex hole (40) and a far cortex hole (42), both holes (40, 42) radially overlapping the bore (34) and the threaded portion diameter (DTP) threadedly engaging the bore (34). A compression transmission device (54) has an exterior (56) and an interior (58) and defines an interior space for transmitting the compressional load of the threaded fastener (22) to the intramedullary nail (20). The threaded fastener (22) extends through the compression transmission device (54) and the intramedullary nail (20) and the far cortex hole (42) for threadedly engaging the bore (34) and fixating the intramedullary nail (20) within the medullary canal (26). The interior space of the compression transmission device (54) is greater than the compression portion diameter (DCP) of the fastener (22) for providing space at least partially about the threaded fastener (22) for allowing the fastener axis (A) to be variously disposed relative to the interior space.La présente invention concerne un clou intramédullaire (20) destiné à être inséré dans le canal médullaire (26) d'un os (24) entouré du cortex (28), qui définit un trou (34) s'étendant de manière transversale au clou intramédullaire (20). Une fixation filetée (22) s'étend le long d'un axe de fixation (A), et présente une partie de compression (48) qui possède un diamètre de partie de compression (DCP), et une partie filetée (50) qui possède un diamètre de partie filetée (DTP) s'étendant à travers un trou de cortex proche (40) et un trou de cortex éloigné (42). Les deux trous (40, 42) chevauchent radialement le trou
