Tibial Osteotomy System with Pivoting Cut Guide for Biplanar Accuracy
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Solution Overview
Problem
Tibial osteotomy procedures, particularly biplanar corrections, are challenging due to the lack of precise surgical guidance, leading to high error rates and limited accessibility for surgeons, necessitating improved instruments and methods for accurate and repeatable bone and soft tissue corrections.
Innovation Solution
A tibial osteotomy system comprising a base plate, measuring arm, and cut guide, which are coupled with screws and stabilization elements, allowing for precise alignment and cutting guidance through translational and pivoting mechanisms, enabling accurate biplanar corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual planning and hand cutting are used for tibial osteotomy, then surgeon experience and expertise are required, but error rate increases and repeatability decreases
Solution Approach 1:
The patent introduces a cutting guide as an intermediary device between the surgeon's visual planning and the actual hand cutting. The cutting guide translates preoperative planning into precise intraoperative execution by providing physical guidance for the osteotomy cut, thereby reducing reliance on surgeon experience while maintaining or improving cutting accuracy.
Solution Approach 2:
The patent replaces the purely manual mechanical system of hand cutting with visual planning with a guided mechanical system. The cutting guide incorporates mechanical elements such as guides, slots, and alignment features that constrain and direct the cutting instrument, substituting the need for expert manual skill with a mechanically guided process that improves repeatability and reduces error rates.
2Reliability
If guided and measured cutting is implemented, then surgeon accuracy and repeatability improve, but device complexity increases
Solution Approach 1:
The osteotomy system is divided into separate modular components including a base plate, cutting guide, and stabilization elements. This segmentation allows each component to perform its specific function independently while contributing to the overall reliability of the procedure. The modular design also facilitates easier sterilization, replacement, and adaptation to different surgical scenarios.
Solution Approach 2:
The cutting guide is designed with multiple functions: it provides guidance for the osteotomy cut, accommodates stabilization elements, and interfaces with the base plate. This multi-functionality reduces the number of separate devices needed while maintaining high procedure repeatability, thereby managing device complexity without sacrificing reliability.
3Stability of the object's composition
If stabilization elements are used to secure the cutting guide, then cutting guide stability improves, but surgical time increases
Solution Approach 1:
The stabilization elements are designed to be inserted through pre-drilled holes or pre-positioned receptacles in the base plate and cutting guide. This preliminary preparation of the stabilization pathway allows for rapid insertion of the stabilization elements during surgery, reducing the time required to secure the cutting guide while ensuring stable fixation.
Data Source
AI summary
The present disclosure relates to a tibial osteotomy system. The system includes a base plate configured to interface with the tibia which includes a body with a first pair of apertures configured to receive a first pair of stabilization elements, a first end with a first aperture, and a second end with a second aperture. The system also includes a measuring arm coupled with the first end of the base plate via the first aperture and having a third aperture aligned with the first aperture to receive a first screw, and a cut guide pivotably coupled with the second end of the base plate via the second aperture and having a fourth aperture aligned with the second aperture to receive a second screw therein. The cut guide also has a slot, a measurement flag releasably couplable within the slot, and a protrusion configured to receive a second stabilization element.