发明名称 EXTRACTION SCREWDRIVER
摘要 A bone fastener removal tool including an inner shaft axially engaging a bon e fastener, a drive shaft allowing the fastener to be rotated using the tool, and an internally threaded outer sleeve, in combination with the drive shaft , allowing for a controlled removal of the fastener from the bone plate and bone. The internal threads of the outer sleeve engage external threads on th e drive shaft such that rotating the drive shaft while maintaining the outer sleeve fixed causes the drive shaft to translate with respect to the sleeve. Thus, when a fastener is axially engaged with the drive shaft, a controlled removal of the fastener from the bone and bone plate is accomplished by rotating the drive shaft with respect to the outer sleeve. No pulling on the fastener is necessary. A method of using the tool is also provided.
申请公布号 CA2560173(A1) 申请公布日期 2005.10.27
申请号 CA20052560173 申请日期 2005.03.22
申请人 SYNTHES (U.S.A.) 发明人 RATHBUN, DAVID SAWYER;SUH, SEAN S.
分类号 A61B17/56;A61B17/80;A61B17/86;A61B17/88;A61B17/92 主分类号 A61B17/56
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