Vertebral distraction stabilizer
OwnerRobert A Dixon, Donald J. Hackmaninventors
Life of this patent
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Abstract
This invention comprises a device and a method of maintaining distraction and providing tool guidance in the preparation of an intervertebral space for an implant. It provides a means for attaching a tube, to guide tools that will prepare the vertebra for accepting an implant. At any time during the procedure the tube may be removed to inspect or remove debris from the disc space and the vertebral end plates without disturbing the distraction. The system has multiple tube diameters which can be attached to a common flange to increase the dowel size during the procedure without redistracting.
Claims9
A device for distracting and temporarily maintaining the distraction between two adjacent bone segments, which have an upper end and a lower end, in a bone column;
- and for providing a channel for tool alignment and guidance in preparation for placing an implant, said device comprising:
- (a) a flange, having a threaded large hole and two small holes, for placement on and attachment to said bone segments and aligned with said bone segment ends, and
- (b) a bone segment distractor, having a guide disk alignment gauging section that engages said flange large hole, and
- (c) one or more guide tubes, open at each end and threaded at one end, said guide tubes removably attach to the said large hole in said flange to provide said channel for tool alignment and guidance.
A device with a distractor for distracting two adjacent bone segments, m a bone column, in preparation for attaching a flange to said bone segments, said bone segments having an upper end and a lower end, said device comprising:
- (a) said flange, having a large hole and two small holes, for placement on and attachment to said bone segments and aligned with said bone segment ends, and
- (b) said distractor having a circular guide disk that engages and positions said flange large hole.
A device for maintaining the distraction between two adjacent bone segments, in a bone column, for providing a channel for tool alignment and guidance in preparation for placing an implant, said bone segments having an upper end and a lower end, said device comprising:
- (a) a flange, with a threaded large hole and two small holes, for placement on and attachment to said bone segment and aligned with said bone segment ends, and
- (b) one or more guide tubes, open at each end with a threaded section at one end, said guide tubes removably attach to the said large hole in said flange to provide said channel for tool alignment and guidance, and
- (c) said guide tubes with a threaded section that engages said threads in said flange large hole.
Dependencies are inferred from the claim text.