Handheld Target Localization with 3D Scan Sufficiency Feedback
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Solution Overview
Problem
Existing medical navigation devices face challenges with inaccurate and imprecise tracking due to line-of-sight obstruction and the need for additional equipment, which hinders surgical procedures.
Innovation Solution
A scanning sufficiency device with a tracking system and ionizing radiation sensor that provides real-time feedback on scanning completeness, using a housing assembly, processor, and visualization device to create 3-D models and notify users of incomplete scanning areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If overhead optical stereoscopic tracking systems with infrared reflective spheres are used, then tracking capability is provided, but device complexity and equipment quantity increase which hinders the surgical procedure
Solution Approach 1:
The patent combines the tracking camera and ionizing radiation sensor into a single integrated housing assembly. This merging of functions eliminates the need for separate tracking equipment and reduces the overall quantity of devices in the surgical room, while maintaining both tracking capability and imaging functionality
Solution Approach 2:
The tracking camera is designed to serve multiple functions: it provides optical tracking for navigation while also capturing images that can be used for surgical documentation and guidance. This multi-functionality reduces the need for additional dedicated equipment
2Measurement precision
If tracking camera line-of-sight is maintained for accurate tracking, then tracking precision is improved, but surgical procedure is hindered due to obstruction by surgeon movement, assisting personnel, and medical equipment
Solution Approach 1:
The system continuously provides visual feedback by displaying the surgical field and instrument positions on monitors. This real-time feedback allows the surgical team to maintain awareness of instrument locations without requiring constant visual contact with the tracking camera, enabling accurate tracking while preserving surgical workflow
Solution Approach 2:
The tracking camera creates visual copies (images) of the surgical field and instrument positions, which are then displayed on monitors. These visual copies allow the surgical team to monitor tracking accuracy and surgical progress without blocking the physical surgical field or requiring direct line-of-sight to the camera
3Reliability
If scanning completeness is not monitored, then device complexity is reduced, but scanning quality and accuracy deteriorate due to incomplete data collection
Solution Approach 1:
The system automatically calculates and displays scanning completeness values (SCV) to provide real-time feedback on the quality of data collection. This feedback mechanism ensures that surgeons can identify and re-scan insufficient areas, thereby improving overall scanning quality and accuracy without requiring complex external monitoring equipment
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves scanning quality and accuracy by ensuring complete data collection, reducing errors, and enhancing surgical precision through real-time feedback and 3-D modeling.
Implementation Method 1
an ionizing radiation sensor at least partially enclosed within the housing assembly and disposed towards the distal end of the housing assembly
Data Source
AI summary
The present disclosure relates, in part, to a scanning sufficiency apparatus that computes whether a handheld scanning device has scanned a volume for a sufficiently long time for there to be detections and then indicate to the user that the time is sufficient in 3-D rendered voxels. Also described is a hand held medical navigation apparatus with system and methods to map targets inside a patient's body.