Percutaneous renal access (Chiba-type) needle
Fine (18-22G), flexible needle with a short (~30°) bevel, used under fluoroscopic, ultrasound or endoscopic guidance to puncture the target renal calyx.
How it is used
The first step of percutaneous nephrolithotomy (PCNL): establishes the renal tract that is then dilated over a guidewire and fitted with the Amplatz sheath already catalogued.
Sources
This entry is part of the Instriq catalog, researched and written per specialty from real web research -- never generated or invented without verification -- and reviewed skeptically and independently before publication. How this catalog is written.
History
Added to the catalog on 2026-10-15.
Dates derived from the project's public version-control history on GitHub, not a live collaborative edit log.