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Facet fixation prosthesis
专利权人:
Jason Cianfrani
发明人:
Jason Cianfrani,Daniel Laskowitz,Edward Karpowicz
申请号:
US12359706
公开号:
US09445842B2
申请日:
2009.01.26
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A facet screw system for surgical implantation into bone tissue having a shaft, a compression member and a washer. The shaft includes a shaft having a bone engaging portion and a compression member engaging portion. The compression member includes a spherical head portion having a recess for engaging with a driving instrument, and an elongated coupling portion having internal threads for coupling with the compression member engaging portion of the shaft and a washer coupled to the spherical head portion of the compression member and having a plurality of bone engaging protrusions. The washer is adapted to be polyaxially rotatable with respect to the compression member.
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