Tool Setting Device for Precise Surgical Instrument Alignment
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Solution Overview
Problem
Current surgical planning methods face challenges in accurately transferring preoperative planning information from virtual software to adjustable surgical instruments, particularly in replicating the desired location and trajectory of landmark guiding structures on patient tissue surfaces during surgical procedures.
Innovation Solution
A tool setting device and method that utilize a base body with setting apertures and elongate setting supports, featuring indicia and tool engaging features, to position the landmark guiding structure correctly on the patient tissue, ensuring precise alignment and adjustment of locating feet to match the virtual surgical plan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If numerical settings are transferred directly from presurgical planning software to an adjustable surgical instrument, then the transfer process is simplified and time is reduced, but accuracy and reliability of transferring scaled setting information deteriorates
Solution Approach 1:
A physical setting stand with scaled setting supports serves as an intermediary between the virtual surgical plan and the adjustable surgical instrument. The setting supports with indicia provide a tangible reference that enables accurate scaling and transfer of measurements, bridging the gap between digital planning and physical implementation while maintaining both efficiency and precision.
Solution Approach 2:
The setting stand creates a physical copy or representation of the virtual surgical plan through scaled setting supports. Each setting support replicates specific measurements and positions from the digital plan in physical form, allowing the surgeon to accurately transfer these settings to the surgical instrument without directly interfacing with the software.
2Manufacturing precision
If a physical patient tissue model is used to transfer information from the virtual surgical plan to an adjustable instrument, then accuracy of transferring setting information is improved, but device complexity and time required increase
Solution Approach 1:
The invention extracts only the essential setting information and measurements from the virtual surgical plan and patient-specific model, representing them as simplified scaled setting supports with indicia on the setting stand. This extraction process eliminates unnecessary complexity while retaining the critical data needed for accurate instrument adjustment.
3Adaptability or versatility
If the landmark guiding structure is manually positioned on patient tissue during surgery, then flexibility and adaptability are improved, but precision and reproducibility of the desired location and trajectory deteriorate
Solution Approach 1:
All positioning measurements and trajectory parameters are determined and recorded in advance during the presurgical planning phase. The setting stand with scaled setting supports prepares these parameters physically before surgery, allowing the surgeon to simply replicate predetermined values during the procedure rather than making complex judgments in the operating room.
Data Source
AI summary
A tool setting device includes a base body having longitudinally opposite base top and bottom surfaces laterally bounded by at least one base side surface. At least one setting aperture extends from the base top surface longitudinally downward at least partially through the base body. An elongate setting support slidably fits into a corresponding setting aperture. The setting support includes indicia and a tool engaging feature. A support holding feature is provided for maintaining a longitudinal position of the setting support with respect to the setting aperture. The tool engaging feature is positioned at a predetermined longitudinal distance above the base top surface. The predetermined longitudinal distance bears a direct relationship to the indicia. The tool engaging feature is maintained at the predetermined longitudinal distance through engagement of the setting support with the support holding feature. A method of transferring numerical setting information to a tool is also provided.