SUS304 Stainless Steel Medical AVF Needle Tube For Dialysis Treatment , Back Eye Point

SUS304 Stainless Steel Medical AVF Needle Tube For Dialysis Treatment , Back Eye Point

An SS304 Stainless Steel Medical Back-eye AVF (Arteriovenous Fistula) Needle Tube is a precision-engineered, hypoallergenic cannula specifically designed for hemodialysis application. The "back-eye point" refers to a secondary side-port (auxiliary eye) located proximal to the primary bevel. This feature ensures continuous blood flow even if the main lumen opening is occluded by the vessel wall. The tube is fabricated from medical-grade SS304 stainless steel, offering an optimal balance of stiffness, puncture precision, and biocompatibility for repeated vascular access in chronic kidney disease patients. YUHONG GROUP produces large-batch AV Fistula needle tubes with high quality and good prices. We can customize different kinds of medical stainless steel needle tubes based on client’s drawings or samples. The OD size mainly range from 10G to 34G.

The back-eye point design is critical in AVF needles. Unlike standard single-bevel needles, the back-eye needle incorporates a small, deburred secondary hole positioned 2–5 mm behind the main bevel. During dialysis, if the primary bevel contacts the intima of the vessel wall, suction pressure can collapse the lumen. The back-eye acts as an alternative inflow pathway, significantly reducing:

• Hemolysis (due to high negative pressure)
• Inadequate blood flow rates (leading to machine alarms)
• Vessel wall trauma (from repositioning attempts)

This design is particularly advantageous for patients with deep, tortuous, or small-diameter fistulas.

Common Sizes (Gauge):

• 15 Gauge: Used for the highest blood flow rates.
• 16 Gauge: Used for most average dialysis blood flow rates.
• 17 Gauge: Used for patients with smaller or fragile veins,

Key Features of SUS304 AV Fistula Needles:

• Back-eye Safety
• High Column Strength, Resistance to Kinking
• Sharply Honed Bevel
• Non-Pyrogenic & Biocompatible
• High Burr Strength

Different Applications of Stainless Steel AV Fistula Needle Tubes:

• Hemodialysis
• Hemoperfusion
• Blood Donation/Phlebotomy
• Animal Dialysis (Veterinary)
• Therapeutic Apheresis
• Long-term Infusion Ports (Veterinary)
• Research Catheters
• Blood Component Separators
• Large-Bore Medication Delivery