Polyaxial Drill Guide Assembly for Precise Multi-Angle Bone Drilling
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Solution Overview
Problem
Existing surgical procedures for installing cartilage surface repairing implants require specialized drill targeting guides to accurately locate and drill holes for bone screws, which can be complex and challenging due to varying bone structures.
Innovation Solution
An orthopedic drill guide assembly with a first guide member featuring angled guide holes and a second guide member with fixed-angle guide lumens, allowing for precise alignment and drilling of bone screw holes, adaptable to different bone contours.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed-angle drill guide is used, then drilling precision is improved, but adaptability to varying bone structures deteriorates
Solution Approach 1:
The drill guide employs a dynamic angle adjustment mechanism that allows the drilling angle to be varied within a range (e.g., 0 to 30 degrees from orthogonal) while maintaining precise control. This enables the guide to adapt to different bone structures and contours while preserving drilling accuracy through the defined angular range.
Solution Approach 2:
The invention changes the drilling angle parameter from a fixed value to a variable range. The guide holes are configured to receive drill bits at angles that can vary from 0 to 30 degrees from orthogonal to the bone-contacting surface, allowing optimization for different bone geometries while maintaining precision within each specific angle configuration.
2Adaptability or versatility
If a multi-angle guide system is used, then adaptability to bone structures is improved, but device complexity deteriorates
Solution Approach 1:
The drill guide is segmented into two functional components: a first guide member with guide holes that accommodate variable angles, and a second guide member with guide lumens that provide fixed-angle guidance. This segmentation allows each component to specialize in its function while working together to reduce overall complexity compared to a single complex multi-angle system.
Solution Approach 2:
The first guide member serves multiple functions by accommodating drill bits at various angles within a range, making it a universal guide that can adapt to different bone structures. The second guide member complements this by providing precise fixed-angle guidance when needed, creating a multi-functional system that handles both variable and fixed angle requirements.
3Measurement precision
If specialized drill targeting guides are used, then drilling accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The guide system is designed to self-align and self-guide the drill bit through the guide lumens and holes. The elongated shaft with guide members automatically positions itself on the bone surface, and the guide lumens provide inherent alignment guidance, reducing the operator's cognitive load and making the precise drilling operation easier to perform.
Data Source
AI summary
An orthopedic drill guide assembly is disclosed. The assembly can include an elongated shaft having a proximal end and a distal end, and a first guide member that includes a bone-contacting surface and a second surface opposite the bone-contacting surface. The first guide member is provided at the distal end of the elongated shaft. The first guide member includes one or more guide holes that are configured for receiving a drill bit at an angle that can vary from 0 to 30 degrees from orthogonal of the bone-contacting surface.