This technical article examines the aiguille 18g 15 pouces diam 084mm l 40mm sans biseau longue inox, a precision needle designed for demanding medical and laboratory applications. The focus here is on specifications, performance characteristics, and best practices for handling this specific stainless steel instrument.
Engineered for consistent flow control and minimal tissue trauma, this 18 gauge needle combines a 15 inch length with a 0.84 mm diameter and a 40 mm exposed tip without a bevel. The overall long inox configuration ensures durability and corrosion resistance in critical environments.
Key Specifications at a Glance
The table below translates technical data into practical insights for clinical and laboratory decision makers.
| Parameter | Value | Clinical Relevance | Material Standard |
|---|---|---|---|
| Gauge | 18G | Balances flow rate with patient comfort for viscous and sensitive fluids. | 304/316L Stainless Steel |
| Overall Length | 15 pouces (381 mm) | Provides reach for deep intramuscular or subcutaneous delivery through standard clothing. | Long Inox Construction |
| Outer Diameter | 0.84 mm | Optimized viscosity handling while maintaining acceptable infusion speed. | Polished Interior Surface |
| Tip Design | Sans Biseau, 40 mm | Reduces tissue tearing and facilitates smooth penetration without a cutting edge. | Blunt Tip Configuration |
Physical Dimensions and Flow Dynamics
Understanding the precise dimensions of the aiguille 18g 15 pouces diam 084mm l 40mm sans biseau longue inox helps clinicians match needle selection to procedure requirements. The 0.84 mm diameter directly influences flow rate, with larger internal diameters allowing faster delivery of blood products or viscous solutions while maintaining laminar flow characteristics within the hub and catheter interface.
The 15 inch total length offers versatile access for diverse injection sites, particularly in patients with higher subcutaneous tissue depth. The 40 mm exposure without a bevel design minimizes the risk of accidental vessel perforation during advanced placement, as the rounded geometry distributes pressure evenly across tissue layers rather than concentrating force at a sharp angle.
Material Performance and Sterility Assurance
Manufactured from medical-grade long inox steel, this needle exhibits superior resistance to corrosion from biological fluids and cleaning agents. The polished internal surface reduces protein adhesion and particulate shedding, which is critical for sensitive biochemical assays and long-term infusion therapies where contamination could alter results or trigger adverse reactions.
Each unit undergoes validated sterilization processes and packaging integrity testing to ensure aseptic delivery directly from wrapper to application. Consistent dimensional tolerances guarantee predictable performance across batches, supporting quality control protocols in regulated healthcare environments.
Clinical Applications and Handling Protocols
Professionals utilize this needle configuration for intramuscular vaccinations, blood sampling in pediatric and adult patients, and controlled delivery of irritant medications where tissue damage must be minimized. The appropriate hub design facilitates secure connection to standard syringe or infusion systems without accidental disconnection during procedure.
Handling guidelines emphasize gentle finger stabilization at the hub and barrel junction to prevent slip and maintain visual confirmation of insertion depth. Correct disposal into approved sharps containers immediately after use protects healthcare workers and maintains compliance with occupational safety regulations.
Comparative Performance Insights
When evaluating alternatives, practitioners can reference the structured comparison below to understand how this specific needle aligns with procedural goals.
| Feature | This Needle (18G, 15", 0.84mm, Sans Biseau) | Standard 18G Beveled Tip | 20G Long Needle |
|---|---|---|---|
| Flow Rate (mL/sec) | High | Moderate | Moderate to Low |
| Tissue Trauma Risk | Low | Moderate | Low to Moderate |
| Reach Capability | Excellent (15") | Good | Excellent (15") |
| Ideal Use Case | Viscous fluids, deep IM, reduced bevel trauma | General injection, standard depth | Thinner tissues, reduced flow requirements |
Maintenance, Storage, and Best Practices
Proper storage of the aiguille 18g 15 pouces diam 084mm l 40mm sans biseau longue inox preserves packaging integrity and prevents accidental needle stick events. Units should be kept in original sterile packaging within a controlled environment, avoiding temperature extremes and physical compression that could deform the tip or compromise the seal.
Before each use, inspect the packaging for breaches, check expiration dates, and verify that the tip remains undamaged. Any deviation from visual norms requires immediate quarantine and replacement, as microscopic deformations can increase complication risk during insertion despite the rounded tip design.
Operational Excellence and Safety Summary
- Verify gauge, length, and tip design match procedure requirements before selection.
- Store in original sterile packaging within recommended temperature and humidity ranges.
- Perform visual inspection of packaging and needle tip integrity prior to every use.
- Use controlled insertion technique with stable hand positioning to ensure accurate placement.
- Dispose immediately into designated sharps containers to maintain workplace safety.
FAQ
Reader questions
Can this needle be used for pediatric patients requiring long intramuscular injections?
Yes, the 15 inch length and 18 gauge diameter provide appropriate reach and flow for pediatric patients with higher subcutaneous depth, while the blunt sans biseau tip reduces trauma risk in younger individuals.
How does the 0.84 mm diameter affect viscosity handling compared to smaller gauges?
The 0.84 mm internal diameter allows efficient delivery of blood products and viscous medications that would clog or slow down in narrower gauges, making it suitable for rapid transfusion protocols.
Is the long inox construction suitable for autoclave sterilization cycles?
Medical-grade stainless steel long inox needles are designed to withstand standard autoclave cycles, maintaining structural integrity and sterility when storage guidelines are followed precisely.
What safety features are integrated to prevent needlestick injury during disposal?
While the needle itself is sharp, the overall design encourages immediate disposal into rigid sharps containers, with the robust stainless steel construction preventing accidental bending or sheath failure during handling.