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METHODS AND DEVICES FOR POLYAXIAL SCREW ALIGNMENT
专利权人:
DEPUY SYNTHES PRODUCTS; LLC
发明人:
Shawn D. Stad
申请号:
US13830548
公开号:
US20140277198A1
申请日:
2013.03.14
申请国别(地区):
US
年份:
2014
代理人:
摘要:
Devices and methods for aligning the components of polyaxial screws are described herein. In one embodiment, an alignment instrument includes an elongate frame having a longitudinal axis and a plurality of connection caps slidably disposed along the elongate frame. Each connection cap can removably couple to a polyaxial screw extension tube and selectively lock relative to the elongate frame such that a distance between the plurality of connection caps and an angular orientation of each connection cap relative to the elongate frame is maintained. The instrument can also include a transverse angle indicator to indicate an angular orientation of the elongate frame in a plane transverse to the longitudinal axis of the elongate frame. The device can, for example, capture the orientation of a plurality of polyaxial screws during spinal surgery such that the screws can be returned to the same orientation after manipulation to correct a spinal deformity, etc.
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