Pivoting Resection Guide for Precision Osteotomy Cuts
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Solution Overview
Problem
Conventional surgical tools lack precision and accuracy in guiding osteotomy cuts during orthopedic procedures, leading to potential errors and inefficiencies in correcting bone conditions.
Innovation Solution
A patient-specific osteotomy system featuring a pivoting resection guide with temporary fasteners and a cutter guide, designed based on medical imaging, to accurately engage and guide cutting tools for precise bone resections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional cutting tools are used for osteotomy, then the surgeon can perform the procedure with manual dexterity, but the precision and accuracy of the osteotomy cuts deteriorate
Solution Approach 1:
A resection guide is introduced as an intermediary device between the surgeon and the bone. The guide includes a guide surface that contacts the bone and a cutter guide that directs the cutting tool, ensuring the osteotomy is made at the precise predetermined location and orientation without requiring complex real-time navigation systems
Solution Approach 2:
The resection guide is configured with a guide surface and cutter guide that are pre-designed to establish the desired osteotomy trajectory before the cutting begins. The guide surface is shaped to match the patient's anatomy and pre-determine the correct positioning and orientation of the cut, eliminating the need for complex intraoperative adjustments
2Manufacturing precision
If conventional cutting tools are used for osteotomy, then the surgical procedure can be performed with standard instruments, but the accuracy of locating and positioning osteotomy cuts deteriorates
Solution Approach 1:
The resection guide serves as a mechanical intermediary that translates the predetermined osteotomy plan into accurate physical execution. The guide surface contacts specific anatomical landmarks on the patient's bone, and the cutter guide provides a mechanical constraint that ensures the cutting tool follows the exact predetermined trajectory
Solution Approach 2:
The resection guide is divided into distinct functional components: a guide surface for anatomical registration, a cutter guide for tool direction, and a pivot axis for rotational movement. This segmentation allows each component to be optimized for its specific function while maintaining overall ease of operation
3Measurement precision
If a pivoting resection guide with patient-specific bone engagement surface is used, then the precision of osteotomy cuts is improved, but the device complexity increases
Solution Approach 1:
The guide surface of the resection guide is specifically shaped to match the local anatomy of the patient's bone at the osteotomy site. This patient-specific customization of the guide surface ensures precise anatomical registration and positioning, while the rest of the device maintains a relatively simple and universal structure
Solution Approach 2:
The resection guide incorporates a pivot axis that allows the cutter guide to rotate relative to the guide surface. This dynamic feature enables the cutting tool to be positioned at the correct angle and orientation while maintaining contact with the anatomical landmarks, providing precision without requiring a completely rigid and complex structure
Data Source
AI summary
An apparatus, system, and method are disclosed for remediating a condition present in a patient. In some implementations, the device may include one or more temporary fasteners configured to engage one or more bones of a patient's foot. In addition, the device may include a pivoting resection guide having: a first bone attachment feature configured to receive at least one of one or more temporary fasteners; a second bone attachment feature configured to receive at least one of one or more temporary fasteners; a cutter guide coupled between the first bone attachment feature and the second bone attachment feature, the cutter guide configured to guide a cutting tool as the cutter guide rotates about a pivot axis coupled to the first bone attachment feature and the second bone attachment feature.