Modular Surgical Handpiece with Pre-Calibrated Fixation Mechanism
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Solution Overview
Problem
Current surgical navigation systems require recalibration each time a new tool is placed in the handheld device during procedures like total knee or hip arthroplasty, disrupting the surgical workflow.
Innovation Solution
The implementation of removable tool fixation mechanisms with preoperative calibration and internal sensors within the fixation mechanisms to track tool positions and depths, allowing for seamless tool changes without recalibration during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If recalibration is performed each time a new tool is placed in the handheld device, then measurement precision is maintained, but loss of time increases due to procedural interruptions
Solution Approach 1:
The system performs calibration in advance by pre-attaching calibration targets to each tool before the surgical procedure begins. During surgery, when a tool is placed in the handheld device, the pre-attached calibration target is automatically detected by the tracking system, eliminating the need for intraoperative recalibration and allowing the surgical procedure to continue without interruption
Solution Approach 2:
The system uses optical copies (calibration targets with fiducial markers) that can be optically detected and tracked by the surgical navigation system. These calibration targets serve as surrogate references that allow the system to identify and track tool positions through optical recognition rather than requiring physical recalibration measurements
2Productivity
If multiple tools are prepared with fixation mechanisms for quick changes, then productivity increases, but device complexity increases due to additional components
Solution Approach 1:
The system merges the calibration target attachment with the tool fixation mechanism. The calibration target is integrated into or attached to the fixation mechanism itself, so that a single component serves dual purposes: securing the tool in place and providing the optical calibration reference. This reduces the number of separate components needed compared to having independent calibration targets and fixation mechanisms
Data Source
AI summary
Disclosed herein are methods, systems, and apparatuses related to a computer-assisted surgical system including various hardware and software components working together to enhance surgical workflows. The disclosed techniques may be applied to, for example, shoulder, hip, and knee arthroplasties, as well as other surgical interventions. In one example, a device including a powered handheld device, a fixation mechanism, removably attached to the handheld device, and a surgical tool held by the fixation mechanism, wherein one or more combination surgical tools/fixation mechanisms are preoperatively attached to the handheld device and calibrated. In another example, a method includes for each of one or more surgical tools, placing the surgical tool in a fixation mechanism, attaching the fixation mechanism to a handheld device to create a surgical tool/fixation mechanism combination, calibrating the handheld device with the fixation mechanism and surgical tool, and storing the calibration information for the tool.