摘要:
A method of implanting a spinal prosthesis comprises inserting a first member between superior and inferior spinous processes associated with respective superior and inferior vertebrae. The superior and inferior vertebrae are separated by an intermediate vertebra. The method further includes inserting a second member through a channel in the first member. After the second member is inserted, the method requires removing the second member from the channel and inserting a third member through the channel. The third member has a different stiffness than the second member. Finally, the method requires anchoring the third member to the intermediate vertebra, while the third member is inserted through the channel. The third member is anchored at first and second locations disposed on respective first and second lateral sides of the intermediate vertebra.
摘要:
A prosthetic device and method of inserting same between adjacent vertebrae, according to which a first member of a relatively flexible material is adapted to extend between the vertebrae; and at least one second member of a relatively stiff material is supported by the first member.
摘要:
An intervertebral prosthetic device and method for spinal stabilization, according to which a prosthetic device is implanted relative to two vertebrae and is positioned so that it makes a rigid connection with one of the vertebra and a non-rigid connection with the other vertebra.
摘要:
A method of implanting a spinal prosthesis comprises inserting a first member between superior and inferior spinous processes associated with respective superior and inferior vertebrae. The superior and inferior vertebrae are separated by an intermediate vertebra. The method further includes inserting a second member through a channel in the first member. After the second member is inserted, the method requires removing the second member from the channel and inserting a third member through the channel. The third member has a different stiffness than the second member. Finally, the method requires anchoring the third member to the intermediate vertebra, while the third member is inserted through the channel. The third member is anchored at first and second locations disposed on respective first and second lateral sides of the intermediate vertebra.
摘要:
Systems and methods for multi-directional stabilization of a spinal column segment are provided. The systems include one or more motion preserving constructs that are engaged to adjacent vertebrae and extend trans-axially between the vertebrae obliquely to the central axis of the spinal column. The systems permit motion of at least a portion of a vertebral level while providing stabilization at least when tensioned. Systems that provide stabilization in compression are also contemplated.
摘要:
One technique of the present application includes: evaluating a patient having a previously implanted spinal construct and corresponding spinal fusion from an earlier procedure and determining a spinal segment adjacent to the spinal fusion is degenerating after completion of the earlier procedure. After this determination, the previously implanted spinal construct is augmented by attaching a flexible polymer elongated member to the spinal segment adjacent to the spinal fusion with a bone fastener and by coupling the flexible polymer elongated member to one or more elements of the previously implanted spinal construct. In one form, the elongated member is at least partially comprised of polyetheretherketone.
摘要:
One embodiment of the present application includes a spinal disk prosthesis with one end portion to form a load transmitting relationship with one vertebra of a patient's spine and another end portion to form a load transmitting relationship with another vertebra of the patient's spine. A tube connects the end portions together and a damping material is positioned inside the tube. The end portions each include a magnet to generate a corresponding magnetic field. These magnetic fields are oriented to provide a repulsive force between the end portions to provide a magnetic bearing.
摘要:
One embodiment of the present application includes: performing a medical procedure on a segment of a patient's spine. This segment includes two vertebrae each in contact with a spinal disk positioned in an intervertebral disk space. A passage is formed that follows a pathway through the vertebrae and the intervertebral disk space. This passage extends from an extradiscal opening through one of the vertebrae along a path that turns to change direction. The tubular device is inserted in the passage and extends through the intervertebral disk space. A fluid material is introduced into the tubular device to at least partially fill it to provide a spinal prosthetic structure. Other embodiments and inventive aspects include other prosthetic device arrangements, implantation methods, systems, and techniques.
摘要:
One embodiment of the present application includes a spinal disk prosthesis with one end portion to form a load transmitting relationship with one vertebra of a patient's spine and another end portion to form a load transmitting relationship with another vertebra of the patient's spine. A tube connects the end portions together and a damping material is positioned inside the tube. The end portions each include a magnet to generate a corresponding magnetic field. These magnetic fields are oriented to provide a repulsive force between the end portions to provide a magnetic bearing.
摘要:
A prosthetic device and a method of implanting same between two vertebrae of a vertebral column to stabilize the column, according to which each vertebrae is engaged by a spacer, and the spacers are connected to permit relative movement between the spacers so that the distance between the spacers can vary to conform with the distance between the vertebrae and accommodate bending movements of the vertebral column.