Adjustable Orthopaedic Guide Pin Positioning for Bone Anchorage
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Solution Overview
Problem
Current positioning guides for orthopaedic guide pins on bone structures, particularly on the glenoid bone, face challenges in achieving accurate and stable anchorage while minimizing bone damage, with specific guides being expensive and non-specific guides lacking accuracy due to reliance on surgeon dexterity.
Innovation Solution
A non-specific positioning guide with movable bearing members that can be adjusted based on pre-surgery images or molds to achieve precise orientation of the orthopaedic guide pin, allowing for multiple deployments and blocking mechanisms to maintain position, enabling accurate and stable anchorage on various bone structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a patient-specific positioning guide is used, then the accuracy of orthopaedic guide pin orientation is improved, but the cost increases and ecological impact worsens due to single-use disposal
Solution Approach 1:
The patent applies universality by designing a reusable positioning guide that can be used across multiple patients and procedures. The guide includes adjustable bearing members and a base that can be repositioned, allowing the same device to serve multiple functions and patients rather than requiring a new patient-specific guide for each case.
Solution Approach 2:
The patent applies dynamics through the movable bearing members that can be adjusted between different positions and orientations. This adjustability allows the guide to adapt to different anatomical configurations and surgical requirements while maintaining precision, eliminating the need for disposable patient-specific guides.
2Adaptability or versatility
If a non-specific positioning guide is used, then the cost decreases and versatility improves, but the accuracy of guide pin orientation deteriorates due to reliance on surgeon dexterity
Solution Approach 1:
The patent applies dynamics through the movable bearing members that can be adjusted between different positions and orientations. This adjustability allows the guide to adapt to different anatomical configurations and surgical requirements while maintaining precision, eliminating the need for disposable patient-specific guides.
Solution Approach 2:
The patent applies feedback through the adjustable bearing members that allow real-time modification of the guide's orientation and position. The surgeon can observe the guide pin orientation and adjust the bearing members accordingly to achieve the desired precision, providing continuous feedback and correction capability.
3Stability of the object's composition
If the guide pin is anchored firmly into the bone structure, then the stability of the guide pin is improved, but the damage to the bone structure increases
Solution Approach 1:
The patent applies the intermediary principle by introducing a positioning guide as a mediator between the surgeon and the bone structure. The guide includes a base that contacts the bone surface and movable bearing members that establish the orientation, allowing the guide pin to be positioned accurately without requiring deep or damaging anchorage into the bone.
Data Source
AI summary
A guide for positioning an orthopaedic guide pin on a bone structure includes a base having an upper face, a lower face intended to bear against the bone structure, and a through-hole for the pin, said guide including several bearing members able to move in guide holes formed in the base, wherein each bearing member has a lower end facing the lower face and is able to be moved selectively between a retracted position inside the guide hole and at least one deployed position in which the bearing member protrudes from the lower face so as to have a salient lower end intended to bear against the bone structure in order to allow the base to be inclined.