316L Stainless Steel Capillary Slotted Scale Puncture Biopsy Needle

The 304/316L Stainless Steel Capillary Tubing Slotted, Graduated Biopsy Puncture Needle is a sophisticated medical instrument engineered for precise tissue sampling and fluid aspiration. Constructed from medical-grade 304 or 316L stainless steel capillary tubing, it incorporates longitudinal slots near the tip for efficient tissue capture or fluid inflow, and clear laser-etched depth graduations for accurate insertion control. This design enhances the efficiency of biopsy procedures, minimizes sample fragmentation, and provides clinicians with real-time visual feedback on needle depth, improving procedural accuracy and patient safety.

1. Material Preparation: Selection and cutting of certified 304 or 316L stainless steel capillary tubing to precise length.
2. Slot Machining: Precision micro-milling or laser cutting of one or more longitudinal slots near the distal end of the needle.
3. Tip Formation: Grinding and polishing to create a sharp, beveled, or specialized (e.g., trocar) tip for tissue penetration.
4. Laser Graduation Marking: High-precision laser etching of depth markers (in centimeters or millimeters) along the needle shaft.
5. Surface Finishing: Electropolishing and passivation for a smooth, biocompatible, and corrosion-resistant surface, both inside and outside.
6. Hub Assembly: Attachment of a Luer-Lock compatible hub, often with a clear chamber to visualize sample entry (flashback).
7. Stylet Fabrication (if applicable): Manufacturing a matching, solid stylet that fits flush with the needle tip for insertion.
8. Cleaning, Sterilization & Packaging: Ultrasonic cleaning, Ethylene Oxide (EtO) or Gamma sterilization, and sterile barrier packaging.

• Fine-Needle Aspiration (FNA) Biopsy: Sampling of thyroid, lymph nodes, breast, salivary glands, and other superficial or deep masses.
• Core Needle Biopsy: Used with an automated or manual biopsy gun to obtain tissue cores from organs like liver, kidney, prostate, and lung.
• Therapeutic & Diagnostic Fluid Aspiration: Drainage of cysts (e.g., breast, kidney), abscesses, or joint effusions (arthrocentesis).
• Bone Marrow Biopsy & Aspiration: Specialized designs for iliac crest or sternal access.
• Minimally Invasive Surgical Procedures: For precise tissue sampling during endoscopic or laparoscopic surgery.