Multipurpose coaxial needle used for percutaneous nephrostomy.

Area of Science:

• Urology
• Medical Device Design

Background:

• Percutaneous nephrostomy is a common urological procedure.
• Accessing the renal collecting system can be challenging in infants and non-dilated systems.

Purpose of the Study:

• To describe a novel coaxial needle designed for improved percutaneous nephrostomy.
• To highlight features beneficial for pediatric and challenging urinary tract access.

Main Methods:

• A 24-cm coaxial needle with a 15-cm beveled outer sleeve was developed.
• The needle accepts a 0.038-inch guidewire and features a Luer-loc connector.
• Depth markings are etched 1 cm apart on the outer sleeve.

Main Results:

• The needle's design facilitates guidewire insertion and depth measurement.
• The beveled outer sleeve aids in navigating urinary tract anatomy.
• The coaxial design allows for secure inner needle fixation.

Conclusions:

• This specialized coaxial needle offers a potential solution for percutaneous nephrostomy in challenging pediatric cases.
• The integrated markings enhance procedural accuracy and safety.