Low-Profile Rib Fracture Plating for Percutaneous Stabilization
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Solution Overview
Problem
Conventional methods for treating rib fractures, particularly in regions like the ribs, face challenges due to anatomical complexity and constant mechanical forces, leading to inadequate stabilization and prolonged recovery times, with existing percutaneous fixation systems lacking adaptability and stability.
Innovation Solution
A fracture plating system using a biocompatible polymer plate with a slot and tether mechanism, combined with bracing members and fasteners, to securely stabilize bone segments by conforming to the bone's interior surface and preventing flexure, allowing for flexible deployment and secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If percutaneous fixation techniques are used, then surgical trauma is reduced and recovery time is shortened, but the ability to securely stabilize bone segments is limited
Solution Approach 1:
The fixation system is divided into separate modular components: a plate with multiple slots, individual fasteners with wings, and tethers. This segmentation allows percutaneous insertion of each component while maintaining the overall stabilization function, resolving the contradiction between minimally invasive access and secure fixation.
Solution Approach 2:
The fastener components are nested within the plate structure, with wings extending through slots and tethers passing through the fasteners. This nested arrangement allows all components to be inserted percutaneously through sequential access while achieving secure bone segment stabilization.
2Reliability
If traditional open surgical approaches are used, then stable fixation is achieved, but surgical trauma increases and recovery time prolongs
Solution Approach 1:
The fastening function is extracted from the plate and implemented as separate fastener components with wings that engage through slots in the plate. This extraction allows percutaneous insertion of fasteners independent of the plate, eliminating the need for open surgical exposure while maintaining fixation stability.
Solution Approach 2:
Tethers serve as intermediary elements that connect bone segments through the plate and fastener system, allowing force transmission and stabilization without requiring direct surgical exposure of the fracture site. The tethers mediate between the percutaneous access point and the internal fixation structure.
3Object-affected harmful factors
If existing percutaneous fixation systems are used, then less invasive surgery is achieved, but adaptability to complex fracture patterns is insufficient
Solution Approach 1:
The plate is designed with multiple slots that can accommodate various fastener configurations and tether arrangements, making the system universally applicable to different fracture patterns and anatomical locations. The same basic plate structure can be adapted to complex rib fractures, flail chest, and other thoracic injuries.
Solution Approach 2:
The fixation system incorporates dynamic elements including flexible tethers that can accommodate bone movement during respiration, and fasteners with wings that can adjust to different bone geometries. This dynamic design maintains adaptability to complex fracture patterns while preserving the percutaneous approach benefits.
Data Source
AI summary
A fracture plating system may be configured to stabilize a fracture of a bone of a patient. The bone may have an interior surface facing toward an interior body cavity of the patient, and an exterior surface facing away from the interior body cavity. The fracture plating system may include a plate configured to span the fracture, a fastener, a tether, a drill bit, and a low-profile driver configured to rotate the drill bit to form a hole in the bone such that the tether is insertable through the hole. The bone may include a rib. The low-profile driver may have a limited height along an axis of rotation of the drill bit such that the low-profile driver is operable within a space between the rib and an adjacent scapula without requiring sufficient distraction of the space to damage tissues within the space.