Imperial Chemical Industries Limited

Axis Spine Technologies Ltd.

Racal Acoustics Limited

David Powell

Nicholas Sandham

Jonathan Arcos

Christopher Reah

John Sutcliffe

Patrick Mckenna

An anterior lumbar interbody fusion device comprising a superior component, an inferior component, and a locking mechanism. The superior component bottom side and the inferior component top side oppose each other when these are received in the intervertebral space whereby their external sides abut against the respective vertebra, thereby coupling force between the latter. The components inter-engage with each other whereby they are constrained to move in an anterior-posterior direction relative to each other and resistance is presented to movement relative to each other in each of a direction of separation and a direction orthogonal to the anterior-posterior direction and to the direction of separation. The locking mechanism allows for relative movement of the components in the anterior-posterior direction which increases an extent of their overlap and presents resistance to movement of the at least one of the component in the anterior-posterior direction which decreases an extent of their overlap, for instance with a mechanism such as protrusions shaped to engage with set of recesses and sprung cantilever beams forming a ratchet mechanism. Optionally, the fusion device may comprise or lack a core component received between said superior and inferior components.

Intervertebral devices

The present invention relates to an intervertebral fusion device () comprising a superior component (), an inferior component () receivable in an intervertebral space between first and second vertebrae, with the core component () insertable between the superior and inferior components to determine a separation between the superior and inferior components. The superior, inferior components and core components comprise respective formations and profiles. The formations () present a barrier to separation of the core from one of the inferior and superior components during insertion of the core component. The profiles guide the core component during insertion of the core component while presenting no barrier to separation from each other during its insertion. The components comprise further formations () which present a barrier to separation of the components from each other once the core has been fully inserted between the inferior and superior components.

Inter vertebral devices

The present invention relates to an intervertebral fusion device () comprising a superior component (), an inferior component () and a core component (). The superior component () and the inferior component () are receivable in an intervertebral space between first and second vertebrae with the core component () insertable between the superior and inferior components to determine a separation between the superior and inferior components. A bone graft conveying aperture is defined in at least one of a superior component top surface () of the superior component and an inferior component bottom surface () of the inferior component. The core component defines a bone graft material holding space which is enclosed except at at least one of a core component top surface and core component bottom surface of the core component and a bone graft material delivery opening. The bone graft material delivery opening extends from outside the core component side to the bone graft material holding space. The bone graft material delivery opening is closed by a closure component.

Intervertebral implants

An intervertebral fusion device is disclosed. The intervertebral fusion device comprises a superior component (), an inferior component () and a core component (). The superior component () has a superior component top side and a superior component bottom side and is configured to be received in an intervertebral space between first and second vertebrae whereby the superior component top side abuts against the first vertebra. The inferior component () has an inferior component top side and an inferior component bottom side and is configured to be received in the intervertebral space whereby the inferior component bottom side abuts against the second vertebra. The superior component bottom side and the inferior component top side oppose each other when the superior and inferior components () are received in the intervertebral space. The core component () is configured for insertion between the superior and inferior components () whereby a separation between the superior and inferior components is determined. The core component () comprises a retention mechanism which moves between a contracted condition and an expanded condition. The core component () is insertable between the superior and inferior components () when the retention mechanism is in the contracted condition. The retention mechanism inter-engages with the superior component () and the inferior component () when in the expanded condition and when the core component () is received between the superior and inferior components to thereby present resistance to movement of the core component from between the superior and inferior components.

Growing community of inventors

London, United Kingdom

David Powell