Computer-Assisted Entry Portal Navigation for Bone Implants
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Solution Overview
Problem
Current methods for inserting implants into bones rely heavily on physician experience, leading to a significant risk of suboptimal positioning and increased radiation exposure, particularly when inserting bone nails into tubular bones.
Innovation Solution
A computer-assisted surgery method that determines a suitable entry point on the bone surface by simulating the insertion of an implant based on imaging data, using a computer program to align the implant with the bone's anatomical structure, and iteratively adjusts the location to achieve optimal positioning, reducing radiation exposure and improving implantation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If implant insertion is performed based on physician experience alone, then the procedure is simple and quick, but the positioning accuracy deteriorates significantly
Solution Approach 1:
The system performs preliminary simulation of implant insertion before the actual procedure. Virtual implants are positioned and visualized in advance to determine optimal entry points and trajectories, allowing the physician to plan the procedure beforehand and execute it with higher precision without excessive complexity during the actual surgery
Solution Approach 2:
The system creates a virtual copy of the patient's anatomy through image processing and generates corresponding virtual implants. This digital twin allows for simulation and optimization of implant positioning without affecting the actual patient, enabling high precision planning before the real procedure
2Measurement precision
If traditional imaging methods are used during implant insertion, then real-time guidance is provided, but radiation exposure to the patient increases
Solution Approach 1:
The system performs preliminary simulation using pre-acquired imaging data to identify optimal entry points and trajectories before the actual implant insertion. This advance planning reduces the need for repeated intraoperative imaging, thereby minimizing radiation exposure while maintaining accurate positioning
Solution Approach 2:
The system introduces a virtual visualization intermediary that overlays simulated implant positions on top of the patient's anatomy. This virtual guide serves as a mediator between the planning stage and execution, allowing accurate implant placement without requiring continuous radiation-based imaging during the procedure
Data Source
AI summary
A method and a corresponding device is proposed, for determining a location on a bone surface and for performing a simulation of an insertion of an implant based on the determined location. The simulation may comprise the steps of identifying an implantation axis of the bone in the first image, and aligning a visualization of the implant with the implantation axis, with respect to the determined location.