Intervertebral Disc Prosthesis With Modular Adaptation Elements

The patent implements a universal base prosthesis design with standardized plates and cores that can accommodate multiple vertebrae sizes and inclinations through optional anatomic adaptation elements. These elements can be added to the standard design to customize the prosthesis for specific patient needs, eliminating the requirement to manufacture entirely different prosthesis types for each case. This multi-functional approach allows a single base design to serve multiple functions across different patient anatomies.

The prosthesis is divided into modular components including base plates, movable cores, and optional anatomic adaptation elements. This segmentation allows the standard base design to be combined with different adaptation elements as needed, rather than manufacturing complete custom prostheses for each patient. The modular structure enables cost-effective production of standardized components while maintaining the ability to adapt to individual patient requirements.

The patent incorporates pre-designed anatomic adaptation elements with specific geometric configurations that are prepared in advance for attachment to the base prosthesis. These elements include pre-calculated inclinations and contact surface geometries designed to correct specific spinal disorders. By having these adaptation elements pre-prepared rather than custom-manufacturing each correction, the system maintains low production costs while achieving disorder-specific corrections.

The anatomic adaptation elements serve as intermediary components between the standardized base prosthesis and the patient's specific anatomy. These intermediaries translate the universal base design into patient-specific solutions by providing the necessary geometric adaptations for correcting disorders like lordosis, while still allowing the base prosthesis to remain standardized and cost-effective to manufacture.

The patent implements a dynamic core that can move relative to the plates during patient movement, providing the necessary mobility and comfort. The core is designed with movable characteristics that allow it to adapt to patient kinematics while maintaining controlled behavior under load through its interaction with the plate surfaces and anatomic adaptation elements.

The prosthesis utilizes surface geometry parameters of the plates and anatomic adaptation elements to control core displacement. By carefully designing the contact surfaces with specific geometries, the system allows controlled core movement during normal operation while preventing excessive creeping under major loads. The parameter optimization of surface geometries enables the system to transition between mobile and stable states as needed.