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US 2018/0280156 A1Published application
Mobile cage system for restoring motion kinematics of the spine
OwnerRobert B. Dziobainventor
Life of this patent
Estimating the term…
Abstract
A mobile cage system for restoring motion kinematics of the spine featuring a pair of opposing caps that form a cavity and a nucleus disposed in the cavity. The system allows for motion of the caps relative to the nucleus. The mobile cage system provides sufficient support so as to eliminate the need for incorporation of a metal plate or rod and pedicle screws that may be used for spinal fusions. The mobile cage system of the present invention also prevents vertical collapse of the vertebrae and complete bone fusion, and the mobile cage system helps preserve intervertebral motion of the spine.
Claims20
A mobile cage system (100) for posterior or lateral insertion in an intervertebral disc space, said system (100) comprising:
- a. a first cap (110) having a first cap first end (111), a first cap second end (112) opposite the first cap first end (111), a first cap inner surface (114), a first cap outer surface (115), a first cap concave indentation (120) disposed in the first cap inner surface (114), and a first cap loading indentation (160) disposed in the first cap inner surface (114) at the first cap second end (112), wherein at least a portion of the first cap outer surface (115) is porous;
- b. a second cap (210) having a second cap first end (211), a second cap second end (212) opposite the second cap first end (211), a second cap inner surface (214) facing the first cap inner surface (114) of the first cap (110), a second cap outer surface (215), a second cap concave indentation (220) disposed in the second cap inner surface (214), and a second cap loading indentation (260) disposed in the second cap inner surface (214) at the second cap second end (212), wherein at least a portion of the second cap outer surface (215) is porous;
- and
- c. a nucleus (105) disposed between the first cap (110) and second cap (210) and cradled by the first cap concave indentation (120) and second cap concave indentation (220), the system (100) allows for motion of at least one cap (110, 210) relative to the nucleus (105).
1 more element
A method of treating degenerative disc disease or spinal stenosis, said method comprising:
- a. retracting cauda equina;
- b. separating a first vertebra from a second vertebra;
- c. removing at least a portion of a disc between the first vertebra and second vertebra;
- d. reaming an end plate of the first vertebra and an end plate of the second vertebra, wherein reaming retains at least a portion of the end plate of the first vertebra and the end plate of the second vertebra;
- e. inserting a first cap (110) and a second cap (210) of a mobile cage system (100) comprising:
- i. a first cap (110) having a first cap first end (111), a first cap second end (112) opposite the first cap first end (111), a first cap inner surface (114), a first cap outer surface (115), a first cap concave indentation (120) disposed in the first cap inner surface (114), and a first cap loading indentation (160) disposed in the first cap inner surface (114) at the first cap second end (112), wherein at least a portion of the first cap outer surface (115) is porous;
- ii. a second cap (210) having a second cap first end (211), a second cap second end (212) opposite the second cap first end (211), a second cap inner surface (214) facing the first cap inner surface (114) of the first cap (110), a second cap outer surface (215), a second cap concave indentation (220) disposed in the second cap inner surface (214), and a second cap loading indentation (260) disposed in the second cap inner surface (214) at the second cap second end (212), wherein at least a portion of the second cap outer surface (215) is porous;
- and
- iii. a nucleus (105) disposed between the first cap (110) and second cap (210) and cradled by the first cap concave indentation (120) and second cap concave indentation (220), the system (100) allows for motion of at least one cap (110, 210) relative to the nucleus (105);
- f. spreading apart the first cap (110) from the second cap (210);
- and
- g. inserting the nucleus (105) into the concave indentations (120, 220) of the caps (110, 210).
9 more elements
A method of restoring motion kinematics of the spine, said method comprising:
- a. retracting cauda equina;
- b. separating a first vertebra from a second vertebra;
- c. removing at least a portion of a disc between the first vertebra and second vertebra;
- d. reaming an end plate of the first vertebra and an end plate of the second vertebra, wherein reaming retains at least a portion of the end plate of the first vertebra and the end plate of the second vertebra;
- e. inserting a first cap (110) and a second cap (210) of a mobile cage system (100) comprising:
- i. a first cap (110) having a first cap first end (111), a first cap second end (112) opposite the first cap first end (111), a first cap inner surface (114), a first cap outer surface (115), a first cap concave indentation (120) disposed in the first cap inner surface (114), and a first cap loading indentation (160) disposed in the first cap inner surface (114) at the first cap second end (112), wherein at least a portion of the first cap outer surface (115) is porous;
- ii. a second cap (210) having a second cap first end (211), a second cap second end (212) opposite the second cap first end (211), a second cap inner surface (214) facing the first cap inner surface (114) of the first cap (110), a second cap outer surface (215), a second cap concave indentation (220) disposed in the second cap inner surface (214), and a second cap loading indentation (260) disposed in the second cap inner surface (214) at the second cap second end (212), wherein at least a portion of the second cap outer surface (215) is porous;
- and
- iii. a nucleus (105) disposed between the first cap (110) and second cap (210) and cradled by the first cap concave indentation (120) and second cap concave indentation (220), the system (100) allows for motion of at least one cap (110, 210) relative to the nucleus (105);
- f. spreading apart the first cap (110) from the second cap (210);
- and
- g. inserting the nucleus (105) into the concave indentations (120, 220) of the caps (110, 210).
9 more elements
Dependencies are inferred from the claim text.