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4A I.P Needle (Initial Puncture Needle)

4A I.P Needle (Initial Puncture Needle)

SKU: 4A-RA-0003

The I.P Needle (Initial Puncture Needle) is a specialized two-part entry system designed specifically for initial percutaneous renal access during Percutaneous Nephrolithotomy (PCNL) and nephrostomy tube placement. Consisting of a sharp inner trocar stylet and an outer cannula with millimeter graduations, it enables controlled, precise entry through dense lumbar musculature and renal parenchyma into the renal calyx under fluoroscopic or ultrasound guidance.

Available Sizes

17.5 G 18 G

Technical Specifications

Product NameI.P Needle (Initial Puncture Needle)
Intended ApplicationInitial percutaneous renal access in PCNL, nephrostomy, and retroperitoneal drainage
Material CompositionHigh-tensile 304 Stainless Steel
Tip ConfigurationDiamond/Trocar Point Inner Stylet with Square-Cut Outer Sheath
Working Lengths15 cm, 20 cm
Wire CompatibilityAccepts 0.035 in (0.89 mm) and 0.038 in (0.97 mm) guide wires
Sterilization MethodEthylene Oxide (EO) Sterilized

Key Benefits

  • Precision Dual-Piece Assembly: Matched inner trocar and outer cannula ensure effortless penetration through deep lumbar tissue.
  • Depth-Graduated Outer Sheath: Centimeter markings allow exact real-time measurement of distance from skin to renal pelvicalyceal system.
  • Smooth Wire Transition: Outer cannula provides a stable, burr-free track for immediate insertion of 0.035" or 0.038" safety guide wires.
  • Enhanced Fluoroscopic Visibility: Highly radiopaque steel construction ensures sharp contrast under fluoroscopy during renal targeting.
  • Ergonomic Hub Locking: Secure hub interface prevents premature stylet movement during initial percutaneous thrust.

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