Modular Intervertebral Implant with Bayonet Locks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Surgeons require a versatile intervertebral implant that can be customized and adapted during surgery to match anatomical variations and patient-specific conditions, such as different vertebrae segments and weight, as existing implants lack modularity and adaptability.
Innovation Solution
A modular intervertebral implant system comprising detachable middle pieces and apposition plates with bayonet locks and progressive spring performance curves, allowing for assembly and adaptation during surgery to accommodate various anatomical requirements and patient weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single standardized intervertebral implant is used, then manufacturing simplicity and cost are improved, but adaptability to different anatomical configurations and patient weights deteriorates
Solution Approach 1:
The intervertebral implant is divided into separate modular components: a middle piece with elastic elements and multiple apposition plates with different constructions. These segments can be selectively combined to create customized implants for different anatomical configurations and patient weights, resolving the contradiction between adaptability and complexity by organizing complexity into manageable, interchangeable modules.
Solution Approach 2:
The middle piece serves as a universal component that can be combined with multiple different apposition plates to accommodate various anatomical requirements and patient weights. This multi-functionality allows a single base design to serve multiple surgical scenarios, improving adaptability without proportionally increasing overall device complexity.
2Adaptability or versatility
If multiple different implants are provided for different patient conditions, then adaptability and surgical versatility are improved, but device complexity and inventory requirements worsen
Solution Approach 1:
Instead of providing multiple completely different implants, the system uses a universal middle piece that can be combined with various apposition plates to create different implant configurations. This reduces the number of distinct base designs while maintaining surgical versatility across different patient conditions and anatomical requirements.
Solution Approach 2:
By segmenting the implant into a universal middle piece and specialized apposition plates, the system allows surgeons to assemble custom configurations from standardized modules. This segmentation reduces inventory complexity compared to maintaining multiple complete implant designs, as only the modular components need to be stored and managed.
3Ease of operation
If detachable attachment means are implemented, then ease of assembly and intraoperative adaptation are improved, but reliability of connection deteriorates
Solution Approach 1:
Attachment means are integrated as intermediary elements between the middle piece and apposition plates, providing a reliable yet simple connection mechanism. These intermediary attachment structures enable easy assembly during surgery while maintaining stable, reliable connections that can withstand physiological loads, thus resolving the contradiction between ease of operation and connection reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simple and effective adaptation of the intervertebral implant to anatomically different vertebrae, providing a customizable solution for different patient weights and anatomical configurations, ensuring optimal fit and stability.
Implementation Method 1
the middle piece can be deformed elastically parallel to its longitudinal axis and has a progressive spring performance curve f
Data Source
AI summary
A modular intervertebral implant or a modular intervertebral disk prosthesis has a middle piece or central section equipped with elements for detachable fixation to one or two apposition plates designed to rest against the base plate or cover plate of an intervertebral body. A modular kit of such modular implants or disks includes n central sections and m apposition plates, where n=2 and m=4 and preferably n=3 and m=6. The surfaces of the apposition plates that face the central section have elements complementary to the elements for detachable fixation on the central section.