Intervertebral Disc Prosthesis With Multi-Approach Attaching Means
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Solution Overview
Problem
Current intervertebral disc prostheses are limited by their inability to be implanted using multiple surgical approaches, requiring multiple prosthesis lines and ancillaries, which complicates surgical operations, increases costs, and complicates handling and storage.
Innovation Solution
The intervertebral disc prosthesis features first and second rigid plates with specific attaching means allowing cooperation with a gripping member for easy implantation via anterior, anterolateral, and lateral approaches, using a single line of prostheses with identical geometry and dimensions, enabling flexible approach selection during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple lines of prostheses are provided for different surgical approaches, then the ability to implant using different approaches is improved, but the complexity of storage and handling is worsened
Solution Approach 1:
The prosthesis is designed with multiple attaching means (anterior attaching means, anterolateral attaching means, and lateral attaching means) that can cooperate with different gripper-impactors, enabling a single prosthesis design to be implanted through multiple surgical approaches (anterior, anterolateral, and lateral approaches). This universal design eliminates the need for multiple specialized prosthesis lines.
Solution Approach 2:
The prosthesis incorporates distinct attaching means positioned at different locations and orientations on the same prosthesis body. Each attaching means is specifically designed to cooperate with gripper-impactors for particular surgical approaches, allowing the single prosthesis to be adapted to different implantation routes without requiring separate prosthesis designs.
2Adaptability or versatility
If multiple lines of prostheses and ancillaries are provided, then implantation flexibility is improved, but the costs are worsened
Solution Approach 1:
A single prosthesis design with multiple attaching means can replace multiple specialized prosthesis lines and their associated ancillaries. The prosthesis can be implanted using anterior, anterolateral, or lateral approaches depending on which attaching means is engaged, reducing the total quantity of different prosthesis types and ancillaries needed in the surgical suite.
3Device complexity
If a single line of prostheses is used for multiple approaches, then storage and handling are simplified, but the ability to accommodate different surgical approaches is worsened
Solution Approach 1:
The prosthesis is divided into functional segments with different attaching means positioned at specific locations (anterior, anterolateral, and lateral attaching means). Each segment can be selectively engaged by appropriate gripper-impactors, allowing the single prosthesis to accommodate multiple surgical approaches while maintaining simplified storage and handling.
Data Source
AI summary
The intervertebral disc prosthesis comprises first and second plates (3, 4) designed to be attached on one of the two vertebrae adjacent to the intervertebral disc to be replaced, and a compression pad arranged between the first and second plates. Each plate comprises first attaching means including two attaching portions (14a, 14b) positioned symmetrically on either side of the anteroposterior median plane of said plate, second attaching means including two attaching portions (15a, 15b) positioned symmetrically on either side of a first plane inclined by an angle comprised between 50° and 70° relative to the anteroposterior median plane of said plate, and third attaching means opposite the second attaching means relative to the anteroposterior median plane and including two attaching portions (16a, 16b) positioned symmetrically on either side of a second plane inclined by an angle of approximately 90°, relative to the anteroposterior median plane of said plate.