Integrated Therapy Chain for Patient-Specific Implant Alignment
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Solution Overview
Problem
Current surgical planning for implant insertion, such as total knee endoprosthesis, relies solely on patient anatomy and implant dimensions, leading to suboptimal alignment and potential complications due to inadequate consideration of patient-specific factors and implant interactions.
Innovation Solution
An integrated therapy chain system that includes preoperative, intraoperative, and postoperative steps, utilizing patient-specific kinematic data, historical data, and simulation to optimize implant selection and positioning, incorporating a navigation or robotic system for intraoperative implementation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical planning is based solely on patient anatomy and implant dimensions, then the planning process is simple and quick, but the alignment and implant selection are suboptimal leading to complications
Solution Approach 1:
The system performs preoperative simulation and planning before the actual surgery to determine optimal implant alignment and positioning. This preliminary action allows the surgical team to plan the precise placement of implants based on patient-specific anatomy and implant characteristics, thereby improving alignment accuracy while managing complexity through advance preparation
Solution Approach 2:
The system incorporates feedback loops where simulation results inform surgical planning decisions. The simulation provides feedback on potential alignment issues and implant positioning, allowing the planning system to adjust and optimize the surgical approach before implementation, thus improving reliability without proportionally increasing complexity
2Adaptability or versatility
If weight restriction is used as the sole parameter for implant selection, then the selection process is simplified, but the implant may not meet patient requirements leading to complaints and complications
Solution Approach 1:
The system transitions from a single global parameter (weight restriction) to multiple local parameters specific to different aspects of patient-implant interaction. It considers patient-specific anatomy, activity levels, bone quality, and implant characteristics separately, allowing optimized matching in each local aspect while maintaining overall system adaptability
Solution Approach 2:
The system changes from using a single parameter (weight) to using multiple parameters including but not limited to weight, activity level, bone density, and anatomical measurements. This parameter expansion allows more comprehensive patient-implant matching while managing complexity through systematic evaluation of each parameter
3Reliability
If empirical alignment techniques are used without mechanical safety assessment, then the surgical process is faster and simpler, but mechanical limits may be exceeded leading to long-term complications
Solution Approach 1:
The system performs mechanical safety assessment and simulation before the actual surgery to identify potential issues with implant alignment and loading. This preliminary mechanical evaluation prevents exceeding mechanical limits during surgery while managing time loss through efficient preoperative planning that avoids intraoperative adjustments
Solution Approach 2:
The system replaces purely empirical mechanical alignment techniques with computer-based simulation and analysis. This substitution allows comprehensive mechanical safety assessment without significantly increasing surgical time, as the computational analysis is performed preoperatively rather than during the surgical procedure
Data Source
AI summary
An integrated therapy chain is used for planning and carrying out insertion of an implant system. The therapy chain includes preoperative, intraoperative and postoperative therapy steps. The system includes a first data device for gathering, processing and providing patient-specific kinematic data, a second data device for gathering, processing and outputting patient data, a third data device for storing and outputting data of the predetermined implant system, and a control unit for controlling the data devices and for carrying out the therapy steps based on the aforementioned data. The first data device outputs a first data set including the currently gathered, patient-specific kinematic data, and a second data set including historical data based on older insertions of the implant system. The second data set supplements the first data set. A method can be performed for the preparation of an operation to insert an implant system.