Computer-Assisted Surgery System for Implant Positioning
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Solution Overview
Problem
Surgeons face challenges in predicting the optimal position and orientation of medical devices, such as intramedullary nails and bone screws, during femoral neck fracture treatments, leading to longer operation times and increased patient stress, as existing methods rely on trial and error and frequent X-ray imaging.
Innovation Solution
A computer-assisted surgery system that uses a reference body to virtually represent the medical device, allowing for the detection of its position relative to anatomical structures, superimposing a virtual representation of the device onto the anatomical structure, and optimizing its position based on predetermined rules for allowable ranges, reducing the need for trial and error and minimizing X-ray exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If trial and error method is used to determine implant position, then the surgeon can obtain a more or less optimum position of the implant, but the operation duration increases and patient stress increases
Solution Approach 1:
The system performs preliminary planning and virtual positioning of the implant before the actual surgery. The computer calculates the optimal implant position and orientation in advance based on pre-operative imaging data, allowing the surgeon to execute the pre-determined plan during surgery without time-consuming trial and error adjustments
Solution Approach 2:
The system creates a virtual copy or representation of the implant and patient anatomy using 3D imaging and modeling. This virtual model allows the surgeon to visualize and adjust the implant position in a simulated environment before actual insertion, eliminating the need for multiple physical trial insertions and X-ray verification shots
2Measurement precision
If trial and error method is used to determine implant position, then the surgeon can obtain a more or less optimum position of the implant, but the number of X-ray images required increases
Solution Approach 1:
The system performs preliminary 3D planning and position optimization before surgery using non-ionizing imaging methods such as CT or MRI. The optimal implant position is calculated in advance, eliminating the need for multiple intraoperative X-ray shots that expose the patient to ionizing radiation
Solution Approach 2:
The system creates a detailed virtual 3D copy of the patient's anatomy and implant using advanced imaging and modeling techniques. This virtual representation allows for precise position verification without requiring repeated X-ray imaging, significantly reducing the patient's cumulative radiation exposure
3Loss of time
If virtual representation and optimization system is used, then the operation time is reduced and patient stress is reduced, but the device complexity increases
Solution Approach 1:
The system replaces manual trial-and-error mechanical positioning with computer-based automated calculation and guidance. The computer algorithm automatically determines the optimal implant position and orientation based on pre-programmed criteria and patient-specific anatomy, eliminating time-consuming manual adjustments while the system complexity is managed through specialized software
Data Source
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AI summary
A computer assisted surgery system and a method for operating a computer assisted surgery system is described therein. The system and method includes providing a virtual representation of a medical device to provide an easier application of a medical device, such as an implant or the like. The described system and method allows for simple and fast positioning of a medical device to be applied, such as an implant, for example.