SUS304 Stainless Steel Back Cut Indwelling Needle Tube For Intravenous Infusion Therapy

The Medical Stainless Steel Back Cut Indwelling Needle Tube is a high-precision, hollow, thin-walled tubular structure made from SUS304 Medical Grade Austenitic Stainless Steel, manufactured in compliance with the ISO 9626: 2016 international standard. It forms the core metallic needle of an Indwelling Venous Catheter (commonly called an IV cannula). The "back cut" (or "double grind" / "lancet point") refers to a specific grinding technique that creates an ultra-sharp, tri-beveled point with a secondary grind on the underside, significantly reducing penetration force and improving "first-stick" success rates. This indwelling needle tube acts as the initial introducer, puncturing the vein and allowing the over-the-needle flexible catheter to be advanced; the needle is then withdrawn and discarded.

Regular Sizes:

Common sizes for peripheral IV therapy:

Key Advantages & Characteristics:

1. SUS304 Stainless Steel Material:

• Excellent Corrosion Resistance: Highly resistant to bodily fluids, saline, and many medications.
• High Strength & Rigidity: Provides necessary column strength for clean puncture without buckling.
• Biocompatibility: Non-toxic, non-reactive, suitable for transient tissue contact.

2. Back-Cut (Tri-Bevel) Point:

• Ultra-Sharpness: Reduces penetration force, minimizing patient tissue damage.
• Clean Entry: Creates a precise slit in the vein wall, aiding catheter advancement and reducing post-removal bleeding.
• Superior Finish: Polished surface minimizes friction ("drag") during insertion and withdrawal.
• Consistency & Reliability: Precision manufacturing ensures every needle performs identically.

Main Injection/Insertion Areas:

1. Peripheral Veins of the Upper Extremities:

Dorsal metacarpal veins.

Cephalic vein.

Basilic vein.

Median antebrachial vein.

2. Peripheral Veins of the Lower Extremities (less common in adults, used more in infants):

Dorsal pedal veins.

Saphenous vein.

Scalp Veins: Primarily in neonates and infants.

Different Applications:

Peripheral Intravenous (IV) Therapy

Standard Peripheral IV Catheters: Most common use.

Safety IV Catheters: Integrated with needle retraction or shielding mechanisms to prevent needlestick injuries.

Midline Catheters: Used as the introducer for longer catheters placed in deeper arm veins.

Winged Infusion Sets ("Butterfly"): Often utilize a 25G or 27G stainless steel needle for short-term or pediatric access.

Specialized Administration Sets: For specific drugs or therapies requiring reliable venous access.