SHOMEA Medical Grade Stainless Steel IVD Side-Port Precision Sampling Needle

Product Specification

Manufactured from medical-grade 316L stainless steel, offering excellent biocompatibility and corrosion resistance

Finely polished needle tip, smooth puncture with minimal damage 

Precision seamless tube manufacturing delivers smooth inner bore free of dead corners

Corrosion-resistant and wear-resistant, capable of withstanding repeated disinfection treatments

FAQ:

Q1: What IVD scenarios is this sampling needle suitable for?​

A: It is widely applicable to equipment for clinical chemistry, immunoassay, molecular diagnostics (PCR pre-processing), blood analysis, etc.:

• Automatic sampling of blood/fluid (e.g., puncture of serum tubes, anticoagulant tubes);

• Precise reagent dispensing (suitable for microliter-level reaction systems);

• Sample pre-treatment (e.g., lysate transfer in nucleic acid extraction).

  It supports compatibility with the robotic arm systems of mainstream IVD devices (e.g., Roche, Abbott, Mindray).

Q2: How does the medical-grade stainless steel material ensure zero sample contamination?​

A: The chromium-nickel-molybdenum alloy ratio of 316L stainless steel forms a "passivation film" in body fluids/reagents, isolating metal ions from samples; the entire process is processed in a 10,000-class clean room, with a surface roughness Ra ≤ 0.2μm (mirror-like inner wall) to avoid sample residue/adsorption; before leaving the factory, it undergoes ultrasonic cleaning + high-temperature drying + ethylene oxide sterilization, with residual pollutants ＜ 0.1μg/g, meeting the "zero-contamination" requirements for trace detection (e.g., tumor markers, viral nucleic acids).

Q3: What are the advantages of the side-port design over traditional needle tips?​

A: Traditional needle tips (end-opening) are prone to air bubble mixing due to "negative pressure suction" during puncture (especially for high-viscosity samples); the side-port design​ allows fluid to "laminar flow" along the needle wall, establishing a stable flow path instantly during puncture with flow rate fluctuation ＜ 5%, and sampling accuracy is improved to ±1% CV (Coefficient of Variation); meanwhile, the side-port area ratio is optimized (approx. 30%–50%), reducing puncture resistance, suitable for precise sampling of trace samples (μL level)​ and high-viscosity samples (e.g., whole blood, serum).

Q4: Can the mounting structure be customized according to our device interface?​

A: Full-dimensional customization is supported:

• Interface type: M3/M4/M5 external thread, snap-on flange (with positioning pin holes), L-shaped elbow interface (for confined spaces);

• Mounting dimensions: Flange hole spacing (±0.02mm precision), thread engagement depth (1–5mm), rod length tolerance (±0.01mm);

• Additional functions: Integrated guide wire groove (to prevent sampling needle deviation), pressure sensor mounting position (real-time monitoring of puncture force).

  We provide 3D drawing review + first-piece trial assembly​ services to ensure 100% compatibility with your device.