Adjustable Bone Borer With Tilting Reaming for Variable Openings
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Solution Overview
Problem
Existing bone drilling tools struggle to efficiently create bore openings of varying diameters required for surgical procedures such as anchor insertion, drug administration, and implant placement in arthroscopic surgeries.
Innovation Solution
A bone removal device with a movable bone borer that can switch between drilling and reaming states by tilting relative to the longitudinal axis, featuring a rotatable adjuster to change the borer's angle and a pusher element for precise control, allowing the borer to extend radially for wider openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate drilling tools are used to create bore openings of varying diameters, then the ability to perform different surgical procedures (anchor insertion, drug administration, implant placement) is improved, but the device complexity and number of instruments required increases
Solution Approach 1:
The bone borer is designed with both a distal drilling tip and at least one proximal reamer, allowing a single device to perform multiple functions: drilling initial bore openings and subsequently enlarging them to various diameters. This eliminates the need for multiple separate drilling tools while maintaining the ability to create bore openings of varying diameters for different surgical procedures
Solution Approach 2:
The bone borer is movably coupled to the elongated shaft, allowing it to move between a drilling state (where the drilling tip contacts bone tissue) and reaming states (where the proximal reamer contacts bone tissue). This dynamic positioning capability enables the single device to adapt its function based on the surgical requirement, whether drilling or enlarging bore openings
2Device complexity
If a single bone borer is used for both drilling and reaming, then the device complexity is reduced, but the precision of controlling the borer's orientation and function changes
Solution Approach 1:
A pusher element is mechanically coupled to the elongated shaft and the bone borer, providing mechanical feedback control. The pusher element is configured to tilt the bone borer relative to the longitudinal axis, with visual indications (such as markings or indices) that provide feedback on the borer's orientation. This allows precise control of the bone borer's position and orientation during both drilling and reaming operations
Solution Approach 2:
The pusher element acts as an intermediary mechanism between the surgeon's control and the bone borer's orientation. By mechanically coupling the pusher element to both the shaft and the bone borer, it translates rotational input into precise angular positioning of the bone borer, enabling accurate control of the drilling and reaming functions
Data Source
AI summary
A bone removal device, including an elongated shaft having a longitudinal axis, a distal end and a proximal end; a movable bone borer movably coupled to the distal end of the elongated shaft, wherein the movable bone borer is configured to rotate around the longitudinal axis; and a rotatable bone borer adjuster mounted on a proximal side of the elongated shaft and to the movable bone borer, wherein the adjuster is configured to rotate around an axis which is different from a rotation axis of the movable bone borer.