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US 11,759,238 B2Granted
Systems and methods for pedicle screw stabilization of spinal vertebrae
OwnerSherwin Huainventor
Life of this patent
Estimating the term…
Abstract
The present application is directed to various spinal stabilization systems. The systems can include one or more guiding elements attached to screw members to assist in guiding rod implants and tools to desired locations within a patient. The guiding elements can include a plurality of wires, blades, or tabs. The guiding elements can be capable of criss-crossing or intersecting at or near an incision, such that only a single incision may be needed to perform a surgery. The guiding elements can also include telescoping features that allow the height of the guiding elements to be adjusted in use, thereby allowing multiple telescoping guiding elements to be used with the same incision.
Claims19
A system for bone stabilization, comprising:
- a screw comprising a screw head, the screw head comprising a first side and a second side, the first side and the second side opposite each other;
- and
- a guiding element configured to extend away from the screw, wherein the guiding element comprises:
- a first blade configured to engage with the first side of the screw head at a distal end of the first blade and to extend away from the screw toward a proximal end of the first blade,
- a second blade configured to engage with the second side of the screw head at a distal end of the second blade and to extend away from the screw toward a proximal end of the second blade,
- wherein the first blade has a curved or bent portion along a length thereof such that the first blade deviates away from the second blade such that a distance between the proximal end of the first blade and the proximal end of the second blade is greater than a distance between the distal end of the first blade and the distal end of the second blade;
- wherein the second blade has a curved or bent portion along a length thereof such that the second blade deviates away from the first blade along a length thereof from the distal end of the second blade to the proximal end of the second blade;
- and
- wherein the first and second blades are nondeformable.
6 more elements
A system for bone stabilization, comprising:
- a first screw comprising a first screw head, the first screw head comprising a first side and a second side, the first side and the second side of the first screw head opposite each other;
- a second screw comprising a second screw head, the second screw head comprising a first side and a second side, the first side and the second side of the second screw head opposite each other;
- a first guiding element configured to extend away from the first screw, wherein the first guiding element comprises:
- a first blade comprising a proximal end and a distal end, the distal end of the first blade configured to engage with the first side of the first screw head and extend away from the first screw, and
- a second blade comprising a proximal end and a distal end, the distal end of the second blade configured to engage with the second side of the first screw head and extend away from the first screw;
- a second guiding element configured to extend away from the second screw, wherein the second guiding element comprises:
- a first blade comprising a proximal end and a distal end, the distal end of the first blade configured to engage with the first side of the second screw head and extend away from the second screw, and
- a second blade comprising a proximal end and a distal end, the distal end of the second blade configured to engage with the second side of the second screw head and extend away from the second screw;
- and
- wherein:
- a first offset distance between the proximal ends of the first blade and the second blade of the first guiding element is greater than a second offset distance between the distal ends of the first blade and the second blade of the first guiding element;
- and
- the first offset distance between the proximal ends of the first blade and the second blade of the first guiding element is greater than a third offset distance between the proximal ends of the first blade and the second blade of the second guiding element so that the first and second blades of the first guiding element are offset from the first and second blades of the second guiding element and do not interfere with the first and second blades of the second guiding element when the first and second guiding elements cross.
10 more elements
A method of treating the spine, comprising:
- making an incision in the skin of a patient to provide access to a spinal location;
- delivering a first screw through the incision and into a first vertebra, the first screw having a first screw head comprising a first side and a second opposite side, wherein a first guiding element is removably attached to the first screw, the first guiding element comprising:
- a first blade having a distal end removably engaged with the first side of the first screw, the first blade extending away from the first screw toward a proximal end of the first blade, and
- a second blade having a distal end removably engaged with the second side of the first screw, the second blade extending away from the first screw toward a proximal end of the second blade;
- delivering a second screw through the incision and into a second vertebra, the second screw having a second screw head comprising a first side and a second opposite side, wherein a second guiding element is removably attached to the second screw, the second guiding element comprising:
- a first blade removably engaged with the first side of the second screw, the first blade extending away from the second screw;
- and
- a second blade removably engaged with the second side of the second screw, the second blade extending away from the second screw;
- manipulating one or both of the first guiding element and the second guiding element to cause the first and second guiding elements to cross;
- and
- delivering a spinal fixation element to the first and second screws using one or both of the first guiding element and the second guiding element;
- wherein:
- a first distance between the proximal end of the first blade and the proximal end of the second blade of the first guiding element is greater than a second distance between the distal end of the first blade and the distal end of the second blade of the first guiding element;
- and
- the first distance between the proximal end of the first blade and the second blade of the first guiding element is greater than a third distance between the proximal end of the first blade and the proximal end of the second blade of the second guiding element so that the first and second blades of the first guiding element are offset from the first and second blades of the second guiding element and do not interfere with the first and second blades of the second guiding element when the first and second guiding elements cross.
12 more elements
Dependencies are inferred from the claim text.