Invention Grant
- Patent Title: Methods and devices for polyaxial screw alignment
- Patent Title (中): 多轴螺丝对准的方法和装置
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Application No.: US13830548Application Date: 2013-03-14
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Publication No.: US09241742B2Publication Date: 2016-01-26
- Inventor: Shawn D. Stad
- Applicant: DePuy Synthes Products, Inc.
- Applicant Address: US MA Raynham
- Assignee: DePuy Synthes Products, Inc.
- Current Assignee: DePuy Synthes Products, Inc.
- Current Assignee Address: US MA Raynham
- Agency: Nutter McClennen & Fish LLP
- Main IPC: A61B17/70
- IPC: A61B17/70

Abstract:
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.
Public/Granted literature
- US20140277198A1 METHODS AND DEVICES FOR POLYAXIAL SCREW ALIGNMENT Public/Granted day:2014-09-18
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