Bone Plate Compression Slots and Reduction Instrument
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Solution Overview
Problem
Current compression methods for treating extra-articular bone fractures, such as direct reduction with clamps and lag screws, are not ideal for achieving adequate stabilization and primary bone healing.
Innovation Solution
A bone stabilization system comprising a bone plate with polyaxial openings and compression slots, combined with a fracture reduction instrument featuring a translation arm and hook arm, allowing for controlled compression or distraction of the fracture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current compression methods (direct reduction with clamps, lag screws, articulating tensioning device) are used, then fracture compression is achieved, but stabilization adequacy and primary bone healing are not sufficiently improved
Solution Approach 1:
The patent combines the bone plate, compression slots, and fracture reduction instrument into an integrated system. The instrument merges multiple functions (hook arm for plate engagement, translation arm for compression application, locking mechanism for force maintenance) into a single device that works协同 with the plate to achieve reliable fracture stabilization through controlled compression
Solution Approach 2:
The compression slots act as intermediaries between the bone plate and the fracture site. They transmit and control compression forces from the instrument through the plate to the fracture, enabling precise force application while maintaining stability. The instrument's hook arm and translation arm serve as intermediaries to apply and maintain compression forces
2Manufacturing precision
If a bone plate with compression slots and polyaxial openings is used with a fracture reduction instrument, then precise compression or distraction forces can be applied to stabilize the fracture, but the device complexity increases
Solution Approach 1:
The bone plate is segmented into functional regions: shaft portion with compression slots for controlled compression, tapered region with polyaxial openings for multi-directional fastener engagement, and metaphyseal portion with specific opening patterns. This segmentation allows each region to perform its specific function precisely while maintaining overall system manageability
Solution Approach 2:
The fracture reduction instrument incorporates a dynamic locking mechanism with movable locking member that can transition between engaged and disengaged states. The polyaxial openings allow dynamic adjustment of fastener angles. These dynamic features enable precise control of compression forces during application while maintaining structural integrity
Data Source
AI summary
Devices, systems, instruments, and methods for promoting healing and stability for bone fractures. Large fragment plating systems with a variety of plate styles allow for reduction of the fracture to achieve primary bone healing. Compression and/or distraction may be applied to the bone fragments during the procedure with an external instrument, such as a fracture reduction instrument configured to restore the fracture while implanting the plate.