Electric-Field-Based Guidance for Percutaneous Catheter Vessel Crossing.

Area of Science:

• Medical Devices
• Biomedical Engineering
• Interventional Cardiology

Background:

• Percutaneous procedures require precise alignment of crossing needles between blood vessels.
• Current methods relying solely on fluoroscopic imaging are often inadequate for optimal needle placement.
• A sensor-based system is needed to enhance accuracy and reduce risks associated with intravascular interventions.

Purpose of the Study:

• To develop and evaluate a novel catheter-based system for guiding crossing needles during percutaneous procedures.
• To utilize dipole electric fields for real-time alignment detection between catheters.
• To improve the accuracy and success rate of vascular access and blood flow diversion techniques.

Main Methods:

• A crossing catheter generates dipole electric fields.
• A receiving catheter in the target vessel detects these fields.
• The system calculates and displays the degree of alignment, enabling operator adjustments.
• Prototype catheters were constructed and tested in vitro.

Main Results:

• The developed system successfully achieved accurate alignment of the crossing needle.
• In vitro evaluations demonstrated the feasibility of precise vascular crossing.
• The system provides real-time feedback for precise catheter rotation and needle deployment.

Conclusions:

• The dipole electric field-based catheter system offers a promising solution for accurate needle alignment in percutaneous interventions.
• This technology has the potential to enhance safety and efficacy in procedures requiring precise vascular access.
• Further clinical evaluation is warranted to validate its performance in human subjects.