Custom Capillary Tube Manufacturing for Needle Assembly Components
Custom Surgical Needle Manufacturing: Precision & Performance
Surgical needles are among the most demanding medical applications to manufacture. A single needle must combine ultra-sharp penetration, dimensional precision, material strength, and surface smoothness. As a custom surgical needle OEM manufacturer, we produce hypodermic needles, biopsy needles, acupuncture needles, and specialty surgical needles for global medical device companies.
Needle Types We Manufacture
Hypodermic Needles
| Gauge | OD (mm) | ID (mm) | Length Range | Applications |
|---|---|---|---|---|
| 18G | 1.270 | 0.838 | 25-90mm | Blood donation, large volume injection |
| 20G | 0.908 | 0.603 | 25-75mm | IV access, blood transfusion |
| 22G | 0.711 | 0.406 | 25-50mm | Subcutaneous, intramuscular injection |
| 25G | 0.508 | 0.260 | 13-38mm | Subcutaneous, insulin delivery |
| 27G | 0.406 | 0.216 | 13-25mm | Pediatric, cosmetic injection |
| 30G | 0.305 | 0.152 | 8-13mm | Insulin pen, CGM sensors |
| 32G | 0.234 | 0.102 | 4-8mm | Micro-fluidic, micro-sampling |
Biopsy Needles
| Type | OD (mm) | Wall (mm) | Tip Type | Applications |
|---|---|---|---|---|
| Core Biopsy | 1.0-2.0 | 0.1-0.2 | Cutting, Franseen | Tissue sampling, organ biopsy |
| FNA (Fine Needle) | 0.5-0.8 | 0.05-0.1 | Sharp, pencil point | Cellular sampling, cytology |
| Automotive Biopsy | 1.2-2.0 | 0.15-0.25 | Cutting, spring-loaded | Prostate, breast biopsy |
Acupuncture Needles
| Gauge | OD (mm) | Length Range | Applications |
|---|---|---|---|
| 28G | 0.32 | 15-75mm | Standard acupuncture |
| 30G | 0.25 | 10-50mm | Pediatric, cosmetic acupuncture |
| 32G | 0.20 | 10-40mm | Micro-acupuncture, facial |
Needle Tip Configurations
| Tip Type | Bevel Angle | Applications | Characteristics |
|---|---|---|---|
| Hypodermic (Bevel) | 15°-25° | Injection, blood sampling | Sharp penetration, smooth tissue passage |
| Trocar | 30°-45° | Access needles, Veress needles | Stiff, tissue-displacing, non-cutting |
| Cutting (Reverse Bevel) | 15°-20° | Biopsy, tissue sampling | Aggressive cutting, tissue core retention |
| Pencil Point | Conical | FNA, spinal needles | Smooth penetration, minimal tissue damage |
| Blunt | Flat | Fluid transfer, non-penetration | Safety, no sharp point |
Manufacturing Process
- Tube Selection — Certified 304/316L/420J2 capillary tube with EN 10204 3.1
- Precision Cutting — Laser or rotary cutting to exact length (±0.1mm)
- Bevel Grinding — Multi-angle bevel (15°-30°) with precision grinding wheels
- Tip Forming — Trocar, cutting, pencil point, or blunt tip per specification
- Electropolishing — Ultra-smooth surface (Ra ≤0.2μm) for easy tissue penetration
- Passivation — Nitric or citric acid passivation for corrosion resistance
- Coating (Optional) — PTFE, silicone lubrication for reduced insertion force
- Cleaning & Packaging — Ultrasonic cleaning, cleanroom packaging, sterile or non-sterile
- 100% Inspection — Dimensional, sharpness, visual, leak testing
Quality Standards
| Standard | Description |
|---|---|
| ISO 7197 | Hypodermic needles and cannulae — Requirements and test methods |
| ASTM F1996 | Standard test method for sharpness of hypodermic needles |
| ISO 9001:2016 | Medical device quality management |
| ISO 10993 | Biocompatibility evaluation |
OEM Services
- Custom gauge and length manufacturing
- Special bevel angles and tip configurations
- Coated needles (PTFE, silicone)
- Needle hub assembly and integration
- Private labeling and custom packaging
- Full documentation: MTR, CoC, EN 10204 3.1
Request a Quote
Contact us with your needle specifications — gauge, length, bevel angle, tip type, quantity — and receive a competitive OEM quote within 24 hours. Free samples available for testing and evaluation.
Healsmed
Leading Stainless Steel Capillary Tube Factory. 1,400+ standard sizes IN STOCK & ready to ship worldwide! High precision, factory-direct price.
