Fiducial Threading Device for Stereotactic Frame Co-Registration
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Solution Overview
Problem
Current deep brain stimulation (DBS) procedures face challenges in accurately and efficiently co-registering stereotactic frames with fiducial markers, which is crucial for precise targeting of brain regions during surgical interventions, often requiring invasive methods and external tools for alignment.
Innovation Solution
The development of a fiducial threading device and stereotactic frame engagement system that allows for the insertion of fiducials without incisions, using a housing with a cannula and rod mechanism for subcutaneous fiducial placement, and a sensor array for co-registration with the stereotactic surgical frame, enabling precise alignment and reducing trauma to the patient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional fiducial insertion methods are used, then fiducial markers can be placed for co-registration, but invasive procedures with incisions cause trauma to the patient
Solution Approach 1:
The patent replaces traditional mechanical incision-based fiducial insertion with a threading mechanism that introduces fiducials subcutaneously through the skin without incisions. The threading device uses a cannula and threaded rod system to guide and secure fiducial markers beneath the skin surface, eliminating the need for surgical cuts while maintaining secure placement for co-registration purposes.
2Measurement precision
If external tools and invasive methods are used for co-registration, then stereotactic frame alignment can be achieved, but procedural time and complexity increase
Solution Approach 1:
The patent implements preliminary action by pre-attaching fiducial markers to the stereotactic frame before the procedure begins. The frame is pre-configured with fiducials at specific locations, and these pre-positioned fiducials are then used during co-registration, eliminating the need for time-consuming external alignment tools and invasive placement procedures during the actual surgery.
Solution Approach 2:
The patent merges the stereotactic frame structure with fiducial markers into a single integrated system. The fiducials are attached directly to the frame components, combining the positioning function of the frame with the reference function of the fiducials, thereby eliminating separate alignment procedures and reducing overall procedural time while maintaining co-registration accuracy.
3Measurement precision
If multiple separate components are used for fiducial placement and co-registration, then precise positioning is possible, but device complexity increases
Solution Approach 1:
The patent combines the threading device components (cannula, rod, fiducial marker) into an integrated assembly that functions as a single unit for fiducial insertion. The threading device integrates the guidance mechanism and securing mechanism, reducing the number of separate components needed while maintaining the precision required for accurate fiducial placement and co-registration.
Data Source
AI summary
The disclosure relates to methods, systems and devices for positioning a stereotactic frame within a desired surgical site, and more particularly to stereotactic systems and methods of co-registration of stereotactic frames with imbedded fiducial markers.