Stainless Steel 304 Lancet Bevel Needle Tube, Cannula For Medicine Injection

Product Specification

Stainless Steel 304 Lancet Bevel Needle Tube, Cannula For Medicine Injection ISO9626

The medical stainless steel needle tube is a high-precision, hollow tubular component, commonly referred to as a "cannula," which forms the core of a hypodermic needle. It is specifically designed for medical injections, blood sampling, and other percutaneous procedures. The Injection needle generally has a lancet bevel needle tip. A lancet bevel (often a "tri-bevel" design) features a primary sharp cutting bevel with two secondary bevels. This design creates an extremely sharp and precise point that minimizes tissue damage, and insertion force by cutting cleanly through the skin rather than tearing it. As one of the leading manufacturer in China, YUHONG GROUP can provide more than 13 billion pieces stainless steel needle tubes per year. We have several 100000 class clean rooms to inspect and package needle tubes. All needle tubes are produced according to ISO9626, ISO7864 standard with excellent size tolerance. In addition to standard needle tubes, we’re also good at making nonstandard needle tubes, which can be customize according to the client’s drawings and samples.

Regular Sizes:

1. Outer Diameter (OD): Ranges from as fine as 34G (approx. 0.18 mm) for insulin pens and intradermal injections, to larger sizes like 10G (approx. 3.4 mm) for drawing blood or delivering viscous fluids.
2. Inner Diameter (ID): It determines the flow rate of the medication.
3. Wall Thickness: Typically ranges from 0.10 mm to 0.25 mm, depending on the gauge. Thinner walls allow for a larger inner diameter (higher flow rate) for a given outer needle size.
4. Length: Cannula lengths are highly variable, from short 6 mm lengths for intradermal use to 100 mm or more for specific surgical or biopsy applications. Standard injection needles are commonly between 12 mm (1/2") and 38 mm (1.1/2").

Common Size Examples:

33G (OD: ~0.21mm): Ultra-fine for painless insulin injection.

27G (OD: ~0.41mm): Common for subcutaneous injections.

21G (OD: ~0.82mm): Often used for blood donation or IV cannulas.

Key Features:

• Exceptional Sharpness: The lancet bevel design provides a clean, swift cut.
• Low Penetration Force: The sharp point and smooth surface reduce the force needed for insertion, directly correlating to reduced patient‘s discomfort.
• High Corrosion Resistance: SUS304 stainless steel offers excellent resistance to body fluids and many medications.
• Biocompatibility: The material is non-toxic and non-reactive with human tissue.
• High Mechanical Strength: Despite its thin walls, the cold-worked structure provides the necessary column strength to prevent bending or buckling during use.
• Superior Surface Finish

Injection Areas:

• Intradermal (ID): Into the dermis. Uses the finest and shortest needles (e.g., 30G-34G, 3-6mm). For allergy tests or TB tests.
• Subcutaneous (SC): Into the fatty tissue under the skin. Common for insulin, vaccines, and hormones (e.g., 25G-31G, 6-16mm).
• Intramuscular (IM): Into the muscle tissue. Used for vaccines, and other drugs requiring rapid absorption (e.g., 21G-23G, 25-38mm).
• Intravenous (IV): Into a vein. Used for drawing blood, IV drips, and injections directly into the bloodstream (e.g., 16G-22G, various lengths).

Different Applications:

• Hypodermic Injections and Blood Collection
• Insulin Auto-injectors: Utilize the finest gauge tubes (e.g., 31G-34G) for daily, near-painless injections.
• IV Catheters: The sharp cannula is used to pierce the vein, after which it is withdrawn, leaving a flexible plastic catheter in place.
• Biopsy Needles: Used to obtain tissue samples (e.g., core biopsies).
• Dental Needles: For local anesthesia in dental procedures.
• Veterinary Needles: For injections and procedures in animals.
• Ophthalmic Surgery: Extremely fine cannulas for procedures within the eye.