Modular Intervertebral Trial Kit for Spinal Surgery
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Solution Overview
Problem
Selecting the appropriate interbody device for lumbar intervertebral disc replacement is challenging due to the numerous possible configurations based on footprint, lordotic angle, and height, making it difficult for surgeons to determine the proper size before implantation.
Innovation Solution
A modular static intervertebral trial kit with interchangeable base members of different heights and endplates with varying angles and footprints allows surgeons to build a trial that accounts for these parameters, reducing the number of trialing iterations and procedure time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large number of trial implants with distinct heights, lordotic angles and footprints are supplied in an instrument set, then the surgeon can assess the proper implant size for the patient, but the device complexity and number of components increase significantly
Solution Approach 1:
The trial implant is divided into three separable components: an upper endplate, a lower endplate, and a base member. Each component can be independently selected and assembled to create different trial configurations, eliminating the need for multiple complete trial implants while maintaining the ability to assess various implant sizes and specifications.
Solution Approach 2:
The base member serves as a universal component that can be paired with different combinations of upper and lower endplates. This multi-functional design allows a single base member to support multiple trial configurations by simply changing the endplate components, reducing the total number of parts needed in the instrument set.
2Adaptability or versatility
If multiple complete trial implants with different configurations are provided, then the surgeon can determine the appropriate implant parameters, but the procedure time increases due to multiple trialing iterations
Solution Approach 1:
By segmenting the trial implant into interchangeable components, the surgeon can quickly swap between different endplate and base member combinations during the procedure. This modular approach allows for rapid reconfiguration of trial implants without requiring multiple complete trial devices, thereby reducing the time needed for iterative sizing assessments.
Solution Approach 2:
The modular trial components are designed to be pre-configured with specific parameters (heights, angles, footprints) before the procedure. The surgeon can select and assemble the appropriate combination of components based on preoperative planning or intraoperative assessment, eliminating the need for time-consuming adjustments during the procedure.
3Adaptability or versatility
If multiple complete trial implants are supplied in the instrument set, then all implant configuration options are available, but the operating room space requirements increase
Solution Approach 1:
Segmenting the trial system into modular components (base members and endplates) dramatically reduces the space required in the operating room. Instead of storing multiple complete trial implants, the surgeon only needs to store a smaller set of interchangeable components that can be assembled into different configurations as needed, freeing up valuable operating room space.
Solution Approach 2:
The modular trial components are designed to nest efficiently within each other or within a compact storage container. The smaller endplates can be stored within or alongside the base members, creating a compact arrangement that minimizes the space required to store all trial components in the operating room.
Data Source
AI summary
A modular, static intervertebral trial having interchangeable base members having different heights, and interchangeable endplates having different footprints and angles.