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A novel suture method to place and adjust peripheral nerve catheters
C Rothe1, C Steen-Hansen1, M H Madsen1
1Department of Anaesthesia and Intensive Care, Nordsjaellands Hospital and University of Copenhagen, Copenhagen, Denmark.
Anaesthesia
|March 21, 2015
Summary
A novel peripheral nerve catheter, guided by ultrasound, allows for precise placement and repositioning near major nerves. This adjustable device demonstrated high success rates in cadaver studies, offering potential for improved regional anesthesia techniques.
Area of Science:
- Medical Devices
- Ultrasound-Guided Procedures
- Regional Anesthesia
Background:
- Accurate peripheral nerve catheter placement is crucial for effective regional anesthesia.
- Traditional methods can be challenging, necessitating improved techniques for catheter navigation and fixation.
Purpose of the Study:
- To develop and evaluate a novel peripheral nerve catheter with adjustable suture-like functionality.
- To assess the feasibility and accuracy of ultrasound-guided placement and repositioning of this catheter.
Main Methods:
- A new peripheral nerve catheter system was designed, incorporating an adjustable mechanism.
- In-plane ultrasound guidance was employed to place 45 catheters adjacent to femoral, saphenous, sciatic, and tibial nerves in cadavers.
- Catheter repositioning accuracy and injectate spread were assessed via ultrasound, with MRI confirmation in select cases.
Main Results:
- Successful initial catheter placement was achieved in 43 out of 45 instances (95.6%) using ultrasound.
- Successful secondary placement (repositioning) was confirmed in 42 out of 43 cases (97.7%).
- Magnetic resonance imaging corroborated ultrasound findings in all 10 cases examined.
Conclusions:
- The developed peripheral nerve catheter, guided by ultrasound, offers a promising adjustable approach for nerve blockade.
- High success rates in placement and repositioning suggest potential for enhanced precision and safety in regional anesthesia.
