Implant Clocking and Screw Planning for Robotic Hip Augment Alignment
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Solution Overview
Problem
Current surgical procedures for hip arthroplasty, particularly those involving implant augments, rely heavily on surgeon expertise and experience, leading to difficulties and extended surgical times, and existing robotically-assisted surgical devices do not provide adequate support for implant augment placement.
Innovation Solution
A robotic surgical system with computer-assisted planning and navigation is used to guide the placement of implant augments, utilizing a graphical user interface to display virtual models and control robotic devices for precise alignment and preparation of the bone, enabling computer-assisted navigation for accurate implant alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surgical methods are used for implant augment placement, then surgeon expertise and experience are required, but surgical time is extended and difficulty increases
Solution Approach 1:
The system performs preoperative planning and virtual implant clocking before surgery, determining the optimal rotational orientation and screw hole positions in advance. This preliminary action allows the surgical team to prepare precise guidance paths, reducing intraoperative decision-making time and extending accuracy without increasing surgical duration.
Solution Approach 2:
The patent replaces traditional mechanical alignment methods and surgeon experience-based placement with a computerized navigation system that uses graphical user interfaces, virtual models, and robotic guidance. This substitution provides objective, precise measurement and guidance, improving reliability while streamlining the surgical process.
2Manufacturing precision
If traditional surgical methods are used for implant augment placement, then surgeon expertise is required, but surgeon burden increases
Solution Approach 1:
The system introduces a computerized navigation interface as an intermediary between the surgeon and the implant placement process. This intermediary handles complex calculations, virtual model rotations, and alignment guidance, freeing the surgeon from manual measurement and alignment tasks while maintaining high precision through automated guidance.
Solution Approach 2:
The patent creates virtual copies of the implant and screw holes in a graphical user interface, allowing the surgeon to plan and visualize the procedure before execution. This virtual copying enables precise preoperative planning without the physical complexity of direct manipulation, reducing surgeon burden while ensuring accurate replication in the actual surgical procedure.
3Measurement precision
If virtual implant model rotation is performed to determine screw hole orientation, then rotational alignment precision is improved, but system complexity increases
Solution Approach 1:
The patent replaces complex physical alignment tools and manual rotation mechanisms with a computerized graphical user interface that performs virtual model rotation. This substitution handles the computational complexity of rotational calculations and orientation determination through software, providing precise measurement without requiring complex physical apparatus.
Data Source
AI summary
A method includes displaying, on a graphical user interface, a planned position of a virtual implant model relative to a virtual bone model of a bone. The virtual implant model includes a plurality of virtual screw holes offset from a central axis of the virtual implant model. The method also includes determining a planned rotational orientation of the virtual implant model by rotating, on the graphical user interface, the virtual implant model about the central axis of the virtual implant model such that the plurality of virtual screw holes rotate about the central axis. The method also includes controlling a robotic device to guide preparation of the bone to receive a physical implant in the planned position. The method also includes providing computer-assisted navigation configured to guide the physical implant into physical rotational alignment with the planned rotational orientation of the virtual implant model.