METHODS FOR PUSH DISTRACTION AND FOR PROVISION OF THERAPY TO ADJACENT MOTION SEGMENTS
First Claim
1. A method to axially distract a first intervertebral space between a first vertebral body and a second vertebral body, comprising the steps:
- implanting a first assembly in the first vertebral body through an access channel;
implanting a second assembly in the second and more caudal vertebral body through the access channel; and
using a rotating portion of the second assembly to contact a proximal end of the first assembly to push on the first assembly without rotating the first assembly to axially distract the first intervertebral space between the first vertebral body engaged with the first assembly and the second vertebral body engaged with second assembly.
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Accused Products
Abstract
Disclosed are methods and apparatus for the provision of spinal therapy to two or more adjacent motion segments accessed through a trans-sacral approach. The spinal therapies include fusion and dynamic stabilization with and without a distraction of the most cephalad motion segment of the two or more adjacent motion segments provided therapy. The disclosure includes methods and apparatus to impart a push distraction to increase the distance between two adjacent vertebrae. Related concepts for the extraction of previously inserted devices and the delivery and removal of plugs for plugging the interior cavities of implantable devices are disclosed.
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Citations
27 Claims
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1. A method to axially distract a first intervertebral space between a first vertebral body and a second vertebral body, comprising the steps:
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implanting a first assembly in the first vertebral body through an access channel; implanting a second assembly in the second and more caudal vertebral body through the access channel; and using a rotating portion of the second assembly to contact a proximal end of the first assembly to push on the first assembly without rotating the first assembly to axially distract the first intervertebral space between the first vertebral body engaged with the first assembly and the second vertebral body engaged with second assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method to selectively provide distraction to two different adjacent motion segments comprising:
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providing a selected spinal therapy to a first motion segment through use of a first assembly engaged with at least a first vertebral body; engaging a second assembly with a second vertebral body immediately caudal to the first vertebral body; pushing a proximal end of the first assembly with a rotating portion of the second assembly to push the first assembly axially away from the second vertebral body without rotating the first assembly; engaging a third assembly with a third vertebral body caudal to the second vertebral body; and pushing a proximal end of the second assembly with a rotating portion of the third assembly to push the second assembly axially away from the third vertebral body without rotating the second assembly. - View Dependent Claims (25, 26, 27)
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Specification