Surgical Instrument Insertion Timing via Breathing Phase Synchronization
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Solution Overview
Problem
In image-guided surgical procedures, there is a challenge in synchronizing patient breathing status during needle insertion or advancement with the breathing status at the time of image acquisition, as existing sensing devices are not synchronized with imaging devices, and patients may struggle to hold their breath, leading to inaccuracies in targeting lesions close to critical organs.
Innovation Solution
A system and method that utilize sensors attached to the patient's body to track positional changes and calculate similarity measures between initial and real-time sensor positions, determining the optimal timing for surgical instrument insertion based on these measures, allowing for synchronized breathing conditions similar to those during image acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing devices are used to detect breathing status, then breathing monitoring capability is improved, but synchronization with imaging acquisition device remains difficult
Solution Approach 1:
The patent combines the imaging acquisition device and the breathing status sensing device into a single integrated system. The sensing device includes sensors that detect breathing status and are synchronized with the imaging device through a common timing system, eliminating the synchronization difficulties between separate devices. The controller coordinates both imaging acquisition and breathing detection through unified timing control.
Solution Approach 2:
The system implements feedback by continuously monitoring breathing status through sensors and using this information to determine optimal timing for imaging acquisition and surgical instrument insertion. The breathing status data feeds back to the controller, which adjusts the timing of imaging and insertion operations to coincide with identical breathing phases, thereby resolving synchronization issues.
2Stability of the object's composition
If patient is asked to hold breath for image acquisition, then breathing stability is improved, but patient ability to comply deteriorates
Solution Approach 1:
Instead of requiring the patient to hold their breath continuously, the system uses periodic breathing monitoring to identify specific moments in the breathing cycle that match between image acquisition and surgical instrument insertion. The sensors detect regular breathing patterns and select timing points that occur naturally during identical phases of the breathing cycle, eliminating the need for breath-holding while maintaining breathing stability.
Solution Approach 2:
The system allows the patient to breathe naturally without intervention, and the automated sensing and timing system selects optimal moments when breathing status matches between procedures. The patient's own breathing pattern serves the purpose of providing stable reference points, eliminating the need for them to actively control or hold their breath.
3Measurement precision
If needle insertion is performed step-by-step with repeated imaging, then targeting accuracy is improved, but procedure time increases
Solution Approach 1:
The system performs preliminary breathing status monitoring and synchronization before needle insertion begins. By pre-establishing the timing relationship between imaging and insertion based on breathing phase matching, the system reduces the need for repeated imaging adjustments during the procedure. The initial timing calibration allows for more efficient subsequent insertions.
Solution Approach 2:
The breathing status sensing operates continuously throughout the procedure, providing real-time data that maintains the timing synchronization between imaging and insertion operations. This continuous monitoring eliminates gaps in timing information and allows for seamless coordination of multiple imaging and insertion steps without requiring pauses for re-synchronization.
Data Source
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AI summary
The present teaching relates to surgical procedure assistance. In one example, a first set of positions of a plurality of sensors are obtained in an image captured prior to a surgical procedure. The plurality of sensors are coupled with a patient's body. One or more second sets of positions of the plurality of sensors are obtained based on information from a tracking device associated with the plurality of sensors. The one or more second sets of positions change in accordance with movement of the patient's body. One or more similarity measures are calculated between the first set of positions and each of the one or more second sets of positions of the plurality of sensors. A timing at which the surgical procedure initiates is determined based on the one or more similarity measures.