Minimally invasive surgical tower access devices and related methods

摘要

Devices and methods are provided for assisting in spinal stabilization. An access device is provided that includes an outer sleeve, inner sleeve, spring latch and lock nut. The inner sleeve includes compressible grasping elements. The access device can be coupled to a screw head by sliding the outer sleeve relative to the inner sleeve and compressing the grasping elements. The coupled access device and screw can then be delivered to a target location in a patient. After providing two or more access devices, a rod member can be delivered using a rod insertion device. The rod member can serve as a connection between the two screws, and can provide spinal stabilization. An anti-torque device and a persuading device can be used to help ensure that the rod member is placed and secured in a proper location within a patient.

主权项

1. A method of spinal stabilization, comprising:
providing a first access device including a first outer sleeve and a first inner sleeve, wherein the first inner sleeve includes a first pair of compressible grasping elements actuated by sliding the first inner sleeve relative to the first outer sleeve; providing a first screw member within the first pair of compressible grasping elements; compressing the first pair of compressible grasping elements to couple the first access device to the first screw member; delivering the first access device and first screw member to a first location within a patient; inserting the first screw member into a first bone member of the patient; providing a second access device including a second outer sleeve and a second inner sleeve, wherein the second inner sleeve includes a second pair of compressible grasping elements actuated by sliding the second inner sleeve relative to the second outer sleeve; providing a second screw member within the second pair of compressible grasping elements; compressing the second pair of compressible grasping elements to couple the second access device to the second screw member; delivering the coupled second access device and second screw member to a second location within a patient; inserting the second screw member into a second bone member of the patient; delivering a rod member to connect between the first screw member and second screw member; providing an anti-torque device, the anti-torque device including a handle connected to a cannula configured to be placed over the first outer sleeve and placing the cannula of the anti-torque device over the first outer sleeve; and providing a persuader device having a hollow interior and inserting the persuader device over an exterior of the first inner sleeve such that the persuader device interacts with the anti-torque device to force the rod member into a seat of a head of the first screw member.