Surgical Instrument Marker for Biopsy Trajectory Confirmation
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Solution Overview
Problem
Minimally invasive medical procedures, such as biopsies, face challenges in accurately confirming the successful access and completion of target tissue due to inadequate traditional methods, particularly when dealing with sub-centimeter sized nodules.
Innovation Solution
A method and system involving a surgical instrument with a marker that is deposited at or near the target tissue, allowing for the determination of the instrument's trajectory, enabling confirmation of successful biopsy by imaging or sensing the marker's location post-withdrawal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods are used to confirm biopsy completion, then the procedure can be completed with simple equipment, but the ability to accurately determine successful target tissue biopsy is inadequate
Solution Approach 1:
A marker is introduced as an intermediary substance that is deposited at the target tissue location by the biopsy instrument. This marker serves as a mediator between the biopsy procedure and confirmation imaging, enabling accurate verification of successful target tissue access without complicating the biopsy instrument itself. The marker can be visualized through standard imaging modalities to confirm procedure completion.
2Measurement precision
If a marker is deposited at the target tissue location, then precise confirmation of biopsy success is achieved, but the device complexity increases due to additional marker deposition mechanisms
Solution Approach 1:
The marker deposition function is merged with the existing biopsy instrument by integrating a marker delivery mechanism into the instrument's structure. This allows the same instrument that performs the biopsy to also deposit the marker at the target location, eliminating the need for separate marker delivery devices and reducing overall system complexity while maintaining precise confirmation capability.
Data Source
AI summary
A method comprises advancing a medical instrument toward a target within a patient anatomy, and the medical instrument includes a marker. The method further comprises depositing the marker at a location at or near the target along a trajectory of the medical instrument. The method further comprises sensing the marker to indicate a location of the target. The method further comprises, based on the marker, determining a second trajectory along which a treatment instrument may be advanced toward the target to treat the target. The second trajectory is different than the trajectory.