Spinal cage
AssigneeKyungpook National University Industry-Academic Cooperation Foundation
InventorsDae-Chul Cho, Gunwoo Noh
Life of this patent
Estimating the term…
Abstract
Proposed is a spinal cage. The spinal cage includes a bone support portion configured to be disposed between a first vertebra at an upper side and a second vertebra at a lower side to support the first vertebra, a base portion positioned at a lower side of the bone support portion to come in contact with the second vertebra, and a sidewall portion which has an upper side end connected to an edge of the bone support portion and a lower side end connected to an edge of the base portion and includes an elastic band having elasticity and inelastic bands having relatively lower elasticity or no elasticity. Therefore, subsidence of the spinal cage into vertebrae can be suppressed.
Claims6
A spinal cage comprising:
- a bone support portion configured to be disposed between a first vertebra at an upper side and a second vertebra at a lower side, which neighbor each other, to support the first vertebra;
- a base portion positioned at a lower side of the bone support portion and configured to be disposed between the first vertebra and the second vertebra to come in contact with the second vertebra;
- and
- a sidewall portion including:
- an upper side end connected to an edge of the bone support portion;
- a lower side end connected to an edge of the base portion to support the bone support portion relative to the base portion;
- and
- an elastic band positioned between a first inelastic band and a second inelastic band, the elastic band being elastically deformable in response to a pressure between the first vertebra and the second vertebra,
- wherein the first inelastic band has an upper side connected to the edge of the bone support portion and a lower side connected to the elastic band, and the second inelastic band has an upper side connected to the elastic band and a lower side connected to the edge of the base portion,
- wherein the first and second inelastic bands have lower elasticity than the elastic band or no elasticity,
- wherein a cross-sectional thickness of the elastic band gradually increases from a center thereof toward an edge thereof, and
- wherein the elastic band comprises a plurality of elastic unit bodies arranged in series, the elastic unit bodies being elastically deformable in response to an external force.
Dependencies are inferred from the claim text.