Plan-Specific Instrument Templates for Precise Percutaneous Guidance
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Solution Overview
Problem
Percutaneous interventional procedures face challenges such as long procedure times, overuse of contrast media and imaging radiation, and difficulty in integrating complex multiple-instrument treatment plans due to cumbersome stereotactic navigation systems and inflexible generic rigid templates.
Innovation Solution
A plan-specific instrument template system is developed using a preoperative or intraoperative imaging of a guide base, designed via additive or subtractive manufacturing, allowing for customizable instrument guides that align with treatment plans, enabling accurate and flexible instrument placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If stereotactic interventional navigation systems are used for accurate instrument positioning, then positioning accuracy is improved, but device complexity and dependency on general anesthesia increase
Solution Approach 1:
The patent extracts the essential function of stereotactic navigation (accurate positioning) while removing the complex tracking technologies and general anesthesia dependency. The plan-specific instrument template achieves positioning accuracy through preoperative imaging-based customization rather than real-time navigation systems.
Solution Approach 2:
The patent creates a physical copy of the treatment plan in the form of a custom instrument template. The template is designed from preoperative imaging data and contains pre-configured instrument trajectories, effectively copying the planned intervention path into a tangible guide structure that eliminates the need for complex real-time navigation.
2Ease of manufacture
If generic rigid templates are used for instrument positioning, then cost is reduced, but adaptability to specific treatment plans deteriorates
Solution Approach 1:
The patent applies local quality by customizing specific features of the instrument template (hole positions, angles, spacing) according to the individual treatment plan requirements. While the overall template structure remains simple and cost-effective, the critical positioning features are locally optimized for each patient's anatomical characteristics and intervention goals.
Solution Approach 2:
The patent performs preliminary customization of the instrument template based on preoperative imaging data before the actual intervention. The plan-specific template is designed and manufactured in advance with pre-configured instrument trajectories, eliminating the need for intraoperative adjustments and reducing procedure time.
3Ease of manufacture
If generic rigid templates with fixed hole patterns are used, then manufacturing simplicity is maintained, but workflow flexibility deteriorates
Solution Approach 1:
The patent introduces dynamic adaptability into the template system by allowing customization of hole positions, angles, and spacing based on individual treatment plans. The template can be dynamically adjusted during the planning phase while maintaining simple manufacturing processes, thereby providing workflow flexibility without complicating production.
Data Source
Figure 1A~1B
Figure 2A~2C
Figure 3A~3B
AI summary
A plan-specific instrument template system employing an intervention guide base (20), and an instrument guide design controller (60) for controlling a designing of a plan-specific instrument template (40) including one or more instrument guides for guiding one or more intervention instruments during an percutaneous intervention. In operation, the controller (60) generates and positions a generic instrument template (30) relative to an image segmentation of the intervention guide base (20), the generic instrument template (30) being a geometric representation of the plan-specific instrument template (40) including the/each instrument guide of the generic instrument template (30) having a generic location and a generic orientation of a generic configuration relative to a platform of the generic instrument template (30). In accordance with a treatment plan associated with the percutaneous intervention, the controller (60) further controls a relocation, a reorientation and/or a reconfiguration of the/each instrument guide of the generic instrument template (30) relative to the platform of the generic instrument template (30).