Coaxial Cannula Design for Precise Positioning & Tissue Protection

Features a cannula (outer tube) + mandrin (inner needle) coaxial structure. The cannula can be left in place after the initial puncture, serving as a precise guide channel for subsequent sampling needles, minimizing repeated punctures and reducing damage to surrounding tissues.

Ultra-Long Length-to-Diameter Ratio for Deep Tissue Access

The needle body is ultra-long, slender, and highly straight (length-to-diameter ratio up to 10:1 or higher). The tip is precisely ground into a sharp bevel, offering low puncture resistance and strong penetration, easily traversing fascia, muscle, and other deep tissues with minimal collateral damage.

Precision Manufacturing for Consistent Performance

Processed via CNC turning + ultrasonic cleaning + electrolytic polishing, the inner wall is smooth (roughness Ra≤0.4μm) for unobstructed sampling. Tip angle and outer diameter tolerances are strictly controlled within ±0.01mm, ensuring consistent performance across all units.

Ergonomic Design for Ease of Use

Equipped with a standard Luer Lock or customized thread interface for quick connection to syringes or biopsy guns. The needle body features depth markings (as shown) for intuitive depth control, enhancing procedural accuracy.

Compliance & Traceability

Certified under ISO 13485 Medical Device Quality Management System, with full product traceability. Meets global regulatory standards (FDA, CE, NMPA), enabling compliant procurement for medical institutions.