Surgical Guide Assembly for Precise Bone Site Preparation
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Solution Overview
Problem
Surgeons face challenges in preparing bone recipient sites for implants, especially when direct access is limited or not possible, necessitating instruments and processes that can engage with the site regardless of access availability.
Innovation Solution
A guide assembly comprising a guide tool, cutting guide, and alignment and fixation assembly, including K-wires, to secure the cutting guide and drill, allowing for precise machining of the recipient site with limited access, using a right-angle drill and alignment guide tool to control the cutting profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If direct access to the recipient site is used, then the surgical procedure is simpler and faster, but direct access is not possible in many anatomical locations
Solution Approach 1:
The patent introduces a guide tool as an intermediary device that bridges the gap between limited surgical access and the need to machine bone at the recipient site. The guide tool includes a guide body with a bore that directs the cutting tool, and a stabilizing member with bone engaging features that anchor the assembly when direct access is not possible. This intermediary structure enables precise bone machining through limited access pathways.
2Manufacturing precision
If a cutting tool is used to machine bone, then the recipient site is prepared for implant installation, but precision and control are difficult to achieve with limited access
Solution Approach 1:
The guide tool acts as a mediator between the cutting tool and the bone, providing a predetermined geometric path through the guide bore. This ensures that the cutting tool follows the exact trajectory needed for accurate recipient site preparation, eliminating the difficulty of manual control that arises with limited surgical access.
Solution Approach 2:
The guide tool is designed with pre-established geometric features and alignment mechanisms that define the cutting path before the actual bone machining begins. The stabilizing member with bone engaging features is positioned and secured in advance to establish a fixed reference frame, ensuring that subsequent cutting operations achieve the required precision.
3Manufacturing precision
If the guide tool assembly is stabilized with bone engaging features, then precision is improved, but the complexity of the device increases
Solution Approach 1:
The guide tool assembly is divided into distinct functional segments: a guide body containing the bore for the cutting tool, and a stabilizing member with bone engaging features. This segmentation allows each component to be optimized independently and facilitates assembly/disassembly, reducing overall complexity while maintaining precision.
Data Source
AI summary
A surgical tool assembly is disclosed herein. The assembly includes a first guide tool portion configured to support an instrument. The first guide tool portion is configured to limit movement of the instrument relative to a patient site. A second guide tool portion is provided that is configured to receive at least one K-wire to stabilize the surgical tool assembly.