3D Catheter Trajectory Planning for Transseptal Mitral Valve Delivery
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Solution Overview
Problem
The challenge in catheter-based interventions, such as transseptal delivery of prosthetic mitral valves, lies in selecting an appropriate catheter that can navigate the patient's anatomy to reach the desired deployment location, often requiring multiple changes during procedures, leading to increased time, radiation exposure, material waste, and infection risk.
Innovation Solution
A computer-based method for planning catheter-based interventions that involves creating a digital model of the patient's anatomy, determining entry and target points, and selecting a catheter capable of following a defined trajectory within anatomical constraints, reducing the need for physical 3D models and improving catheter selection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple catheter changes are performed during procedures to navigate patient anatomy, then catheter selection accuracy improves, but procedure time increases
Solution Approach 1:
The system performs preliminary 3D reconstruction of patient anatomy from 2D fluoroscopic images and simulates catheter trajectories before the actual procedure. This advance planning allows the optimal catheter to be selected and ready for immediate use, eliminating the need for multiple catheter changes during the procedure while maintaining high selection accuracy.
Solution Approach 2:
The system creates a digital 3D copy of the patient's anatomical structures from 2D images. This virtual model allows for virtual catheter testing and trajectory simulation, enabling accurate catheter selection without physical trial-and-error during the actual procedure, thus reducing procedure time while maintaining selection precision.
2Measurement precision
If multiple catheter changes are performed during procedures, then catheter selection accuracy improves, but radiation exposure increases
Solution Approach 1:
The system performs all catheter selection and trajectory verification in advance using 3D reconstructed models, so that the correct catheter is identified before the procedure begins. This eliminates the need for repeated fluoroscopic imaging during catheter exchanges, thereby maintaining selection accuracy while significantly reducing radiation exposure to both patient and operator.
Solution Approach 2:
By creating and manipulating a digital 3D copy of the anatomy, the system allows virtual testing of catheter paths without requiring repeated physical catheter insertions and fluoroscopic imaging. This virtual simulation maintains selection precision while eliminating the radiation associated with multiple imaging attempts.
3Measurement precision
If multiple catheter changes are performed during procedures, then catheter selection accuracy improves, but material waste increases
Solution Approach 1:
The system determines the optimal catheter and trajectory through 3D simulation before the procedure, ensuring that the selected catheter will successfully reach the target. This preliminary determination prevents the use and disposal of multiple incorrect catheters, maintaining selection accuracy while eliminating material waste from failed attempts.
Solution Approach 2:
The virtual 3D model enables testing and verification of catheter selection in silico, allowing accurate selection without physical trial-and-error. This digital copying approach maintains precision in catheter selection while preventing the waste of physical catheters that would otherwise be discarded after failed insertion attempts.
4Measurement precision
If multiple catheter changes are performed during procedures, then catheter selection accuracy improves, but infection risk increases
Solution Approach 1:
The system performs comprehensive catheter selection and trajectory verification before the procedure using 3D reconstructed anatomy. This advance planning ensures the correct catheter is chosen on the first attempt, maintaining high selection accuracy while minimizing the number of times the skin and internal tissues are breached, thereby reducing infection risk.
Solution Approach 2:
By using a digital 3D copy of the anatomy for virtual catheter testing, the system achieves accurate catheter selection without requiring multiple physical insertions. This reduces the number of breaches in sterile barriers and entry points into the body, thereby maintaining selection precision while lowering the risk of introducing infections.
Data Source
AI summary
Systems and methods for planning delivery of an object via a catheter, such as transseptal delivery of a prosthetic mitral valve to a patient's heart are disclosed.