coaxial catheter system
Nested catheter arrangement with inner catheter passing through outer guiding catheter.
Full Definition
A catheter configuration where a smaller inner catheter is advanced through the lumen of a larger outer guiding catheter, creating a telescoping system. This arrangement provides enhanced support and stability for selective vessel cannulation while maintaining the ability to exchange inner catheters without losing vascular access. Coaxial systems are particularly valuable in challenging anatomy, allowing operators to use the outer catheter for gross positioning and the inner catheter for precise selective catheterization. The system improves success rates in complex interventional procedures and reduces procedure time.
Usage
Usage note: Describe both inner and outer catheter specifications in procedural reports.
In Context
- "A coaxial catheter system was used to selectively catheterize the right renal artery." — Renal angioplasty procedure report
- "The coaxial approach provided the necessary support for crossing the chronic total occlusion." — Complex intervention documentation