Expandable lateral lumbar interbody spacer

The expandable lumbar interbody spacer addresses limitations in expansion and lordosis by using unequal endplate expansion rates and a distal drive screw for graft delivery, facilitating percutaneous surgery and bone integration.

WO2025245520A9PCT designated stage Publication Date: 2026-02-05ASTURA MEDICAL INC
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Patent Information

Application Number
PCT/US2025/030920
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-24
Filing Date
2025-05-26
Publication Date
2026-02-05

AI Technical Summary

Technical Problem

Current interbody implants face limitations in expansion capability, often requiring additional hardware to maintain intervertebral space, and struggle to achieve adequate lordosis due to uniform expansion rates and binding issues with converging ramps, while also lacking efficient graft delivery mechanisms.

Method used

An expandable lateral lumbar interbody spacer designed with anterior and posterior endplates that expand at unequal rates, allowing for lordosis creation during expansion, featuring parallel ramps and a distal drive screw for minimal tissue disruption and graft delivery.

Benefits of technology

Enables percutaneous surgery with minimal tissue disruption, allowing for customizable expansion to fit intervertebral spaces and efficient graft delivery, while promoting bone integration through textured surfaces.

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Abstract

An expandable lateral lumbar interbody spacer for placement between adjacent vertebrae configured to have a collapsed state suitable for insertion into an intervertebral space between a pair of adjacent vertebrae, and an expanded state that includes lordosis change during vertical expansion.
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