Modular Interbody Device Segmentation for Spinal Adaptability
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Solution Overview
Problem
Current vertebral implant technologies face challenges in accurately and efficiently inserting modular interbody devices into intervertebral spaces, particularly in achieving proper distraction and stabilization of vertebral members, which is crucial for effective fusion and alignment with varying spinal anatomy.
Innovation Solution
The modular interbody device system includes opposing endplates and an intermediate member, supported by an insertion tool with a distracter mechanism that allows for precise positioning and customizable distraction of vertebral members, utilizing engagement features like slots and projections for secure alignment and a handle with gauges for feedback on height and force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a modular interbody device is used to accommodate varying spinal anatomy, then adaptability is improved, but device complexity increases
Solution Approach 1:
The interbody device is divided into multiple modular components including endplates and intermediate members that can be selectively assembled. The endplates come in different sizes and configurations, and the intermediate members can be selected based on the specific spinal anatomy and surgical requirements, allowing customization without requiring a completely different device for each case.
Solution Approach 2:
The modular components are designed with standardized engagement features that allow the same basic components to serve multiple functions and be used in various spinal regions. The endplates and intermediate members can be combined in different configurations to address different anatomical variations, making the system universally applicable across cervical, thoracic, and lumbar spine procedures.
2Measurement precision
If an insertion tool with distracter mechanism is used to achieve precise distraction, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The insertion tool incorporates gauges that provide real-time feedback on the distraction force being applied and the height of the endplates. This feedback mechanism allows the surgeon to precisely control the distraction process and achieve the desired positioning, while the gauge readings provide quantitative measurement to ensure accurate placement.
Solution Approach 2:
The distracter mechanism acts as an intermediary device between the insertion tool and the interbody device. It provides a controlled mechanism for separating the vertebral members and positioning the endplates at the correct height and orientation, mediating the transfer of force and motion to achieve precise positioning without requiring complex direct manipulation.
3Stability of the object's composition
If engagement features like slots and projections are used to secure alignment, then stability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The engagement features utilize asymmetric geometries where the slots and projections are designed with specific shapes that provide stable engagement in the intended direction while allowing for some manufacturing variation. The asymmetric design ensures proper orientation and secure connection without requiring extremely tight tolerances, as the geometry itself provides the alignment and stability.
Data Source
AI summary
Methods and devices for spacing vertebral members using modular intervertebral devices and insertion tools. The devices may include opposing first and second endplates, and an intermediate member configured to fit between and support the endplates. The insertion tool may include an elongated handle and a distracter. A method of inserting the device using the tool may include inserting the endplates positioned on opposing sides of the handle into the intervertebral space and positioning the endplates in the intervertebral space relative to first and second vertebral members. The method may include deploying the distracter and increasing a distance between the endplates. Another step may include inserting the intermediate member into the intervertebral space and between the endplates and supporting the endplates with the intermediate member. The insertion tool may then be removed from the intervertebral space.