Overview
The document provides detailed information about the Percutaneous Nephrostomy Kit manufactured by Princeton Medical Scientific Co., Ltd. It includes specifications, intended use, and features of the kit components.

Specifications
The kit is available in various models, each identified by a specific code (e.g., 08×180A, 10*180A). The components include dilators, sheaths, puncture needles, and guidewires, with sizes ranging from 8F to 22F and guidewire diameters of 0.035 inches.

Intended Use
The kit is designed for clinical use in patients with renal stones or hydronephrosis. It facilitates percutaneous renal puncture expansion, drainage, and the placement of endoscopic surgical instruments by establishing a channel.

Features
- The sheath is made of Teflon, featuring a smooth inner surface to minimize mucosal damage and a low friction coefficient. It is highly ductile and easy to tear apart.
- The dilatation tube and guide needle tips are X-ray visible and smoothly finished.
- The sheath allows for gradual expansion to establish an access channel.
- The guidewire has J-shaped and straight ends, with a soft tip and a rigid middle section for support, minimizing the risk of prolapse and tissue damage.
- The tube body is marked with a scale for precise puncture positioning.