Adjustable Spinal Plate with Rotatable End Bodies
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Solution Overview
Problem
Conventional spinal plates are difficult to accurately modify in shape to match the diverse spinal conditions of patients, leading to incomplete attachment during surgery and the need for additional procedures.
Innovation Solution
An adjustable spinal plate with a central body and rotatable end bodies, equipped with a rotation device and locking mechanism, allowing for customizable angle adjustments and secure fixation to vertebrae.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the spinal plate shape is modified for each patient's specific spinal condition, then the adaptability to diverse spinal shapes is improved, but the device complexity and difficulty of accurate modification increase
Solution Approach 1:
The spinal plate is divided into a central body and multiple end bodies that can be independently positioned and fixed at different angles. Each end body can be rotated relative to the central body and locked at specific angular positions, allowing the plate to be adapted to various spinal shapes through modular configuration rather than custom fabrication.
Solution Approach 2:
The end bodies are designed with rotation devices that allow dynamic adjustment of their angular position relative to the central body during surgery. The rotation locking device enables the end bodies to be fixed at predetermined angular intervals, providing flexibility to match diverse spinal anatomies while maintaining structural integrity.
2Ease of operation
If the spinal plate is made adjustable with rotation devices, then the ease of operation for shape modification is improved, but the device complexity increases
Solution Approach 1:
The rotation and locking functions are segmented into distinct components: a rotation device that enables angular adjustment and a separate rotation locking device that secures the position. This segmentation allows surgeons to independently control the adjustment and locking operations, simplifying the operational sequence despite the added mechanical complexity.
Solution Approach 2:
The rotation locking device is designed to maintain the rotation device in locked or unlocked states through its own mechanical structure, without requiring additional tools or complex control systems. The locking mechanism self-regulates the angular position, reducing the operational burden on the surgeon while accommodating the necessary mechanical complexity.
3Device complexity
If conventional spinal plates are used without rotation capability, then the device complexity is reduced, but the manufacturing precision and attachment accuracy deteriorate
Solution Approach 1:
The end bodies are pre-configured with rotation devices that allow them to be adjusted to precise angular positions before final attachment to the vertebrae. This preliminary angular adjustment ensures that the plate can be accurately conformed to the patient's spinal anatomy, improving attachment precision without requiring complex post-attachment modifications.
Solution Approach 2:
The angular parameters of the end bodies relative to the central body can be changed during surgery to match the specific anatomical parameters of the patient's spine. This parameter adjustability allows the plate to achieve precise attachment accuracy for diverse spinal shapes while maintaining a relatively simple base structure.
Data Source
AI summary
The present invention provides a spinal plate which is used to perform fixation surgery on a spine in orthopedic surgery and neurosurgery. According to the present invention, a rotation device and a locking device may be installed so as to be used by fixing any one or more of longitudinal ends of the plate with being rotated at any angle, thereby allowing a doctor to modify a shape of the spinal plate to the shape desired by the doctor, and to perform the surgery by coping with various spin shapes of patients. In addition, according to the present invention, since the shape of the spinal plate may be rotated at any angle, it is possible to cope with various spin shapes of the patients.