Stainless Steel Medical Grade 31G Bevelled Insulin Needle Tube For Diabetes Treatment

Medical insulin needle tubes are the key metal part of insulin needles and pen needles, which are mainly made by SUS304 medical-grade stainless steel material due to its excellent corrosion resistance. A Stainless Steel Medical Grade Insulin Needle Tube is a critical, high-precision component designed for the subcutaneous administration of insulin in the treatment of diabetes. It is the core metal tube that is fitted onto a plastic hub and integrated with a plunger mechanism to form a complete insulin syringe or pen needle. The defining features are its ultra-fine diameter, extremely thin walls, and a specially engineered bevelled tip at its distal end, which is further sharpened to a microscopic point to minimize tissue trauma during injection.

Regular Sizes:

Notes:

Outer Diameter (OD): This is the most critical dimension for patient comfort. A smaller OD reduces nerve stimulation and tissue damage.

Wall Thickness: This is engineered to be as thin as possible while maintaining structural integrity to prevent buckling during injection. This also allows for a larger internal lumen for a given OD, facilitating smoother insulin flow.

Length: Shorter lengths (4mm, 5mm) are now the standard for most adult subcutaneous injections to ensure the insulin is delivered into the fatty tissue and not the underlying muscle.

Key Advantages:

• Minimized Discomfort: The ultra-fine gauge, ultra-sharp bevelled tip, and special lubrication make skin penetration almost painless for most users. This is critical for compliance in a therapy that requires multiple daily injections.
• Superior Sharpness: The tip is created using advanced micro-grinding or laser cutting techniques, reducing the force required for injection.
• High Strength and Ductility: Medical-grade stainless steel (SUS304) provides excellent resistance to bending or breaking during use.
• Biocompatibility: The stainless steel material is inert, non-toxic, and hypoallergenic, preventing skin reactions and ensuring compatibility with biological tissues and insulin formulations.
• Corrosion Resistance: The steel is highly resistant to corrosion from both the insulin and the sterilizing agents used in manufacturing.
• Precision Delivery: The consistent internal diameter ensures accurate and reliable dosing of insulin.

Injection Areas:

These needles are specifically designed for subcutaneous injection, meaning the insulin is delivered into the fatty tissue (subcutis) layer just below the skin. The primary injection sites are:

• Abdomen: The area around the navel (avoiding a 2-inch circle around the navel itself). This offers fast absorption.
• Thighs: The upper outer area of the thighs. Absorption is slower here.
• Buttocks: The upper outer area.
• Back of the Upper Arms: The fatty area where the "tricep" is located.
• Rotation between these sites is essential to prevent lipodystrophy (lumps or indentations in the skin).

Choosing the Right Size for Different Applications:

1. For All Adult Patients:

• Gauge: 32G or 33G is the modern standard. It offers the best combination of minimal discomfort and reliable flow.
• Length: 4mm or 5mm is now universally recommended for adults, including those who are overweight. This length is scientifically proven to be effective for reaching the subcutaneous tissue while virtually eliminating the risk of intramuscular injection, which can lead to faster, unpredictable insulin absorption.

2. For Children and Very Slim Adults:

Length: A 4mm needle is almost always the safest and most appropriate choice to avoid intramuscular injection. The thinnest gauge available (e.g., 33G) is ideal for comfort.

Different Applications:

• Insulin delivery(The Main Application)
• Other Subcutaneous Injections: For other biologics and medications.
• Veterinary Medicine: Insulin administration for diabetic pets (cats and dogs).
• Precision Fluid Dispensing: In laboratories and electronics manufacturing for applying minute amounts of adhesives, lubricants, or solvents.
• Biotechnology: Used in micro-injection systems for cell biology and genetics research.