The IV Cannula is among the most essential medical devices used in hospitals and clinics worldwide. It serves as a lifeline for millions of patients, enabling the delivery of fluids, medications, and nutrients directly into the bloodstream.
While it may appear small, each IV cannula is a carefully engineered device consisting of multiple precise IV cannula parts—each performing a vital role in ensuring smooth and safe intravenous therapy.
In this blog, we’ll take a deep dive into the IV cannula structure, its key components, their functions, and why choosing a trusted manufacturer like Lars Medicare Private Limited ensures top-quality performance and patient comfort.
What Is an IV Cannula?
An IV Cannula, also known as an IV catheter, is a small, flexible tube inserted into a vein to administer fluids, blood, or medication.
Once inserted, the steel needle is withdrawn, leaving the flexible catheter in place, which remains connected to an infusion line for continuous fluid flow.
This device is widely used in:
Emergency and trauma care
Surgery and post-operative care
Intensive Care Units (ICUs)
Neonatal and pediatric care
Chemotherapy and dialysis units
As a leading iv cannula manufacturer and iv catheter supplier, Lars Medicare provides high-quality cannulas that are safe, reliable, and clinically efficient.
Detailed Breakdown: IV Cannula Parts and Their Functions
Each IV cannula consists of multiple interconnected parts designed to deliver precision, comfort, and safety during use. Below is a comprehensive explanation of every part:
1. Needle (Intravenous Catheter Needle)
The needle is made from high-quality stainless steel and is the first component that pierces the patient’s vein. It acts as a guide for inserting the catheter.
Key Features:
Tri-beveled, laser-sharpened tip for painless insertion
Siliconized surface for reduced friction
Manufactured with precision for smooth penetration
After insertion, the needle is withdrawn, leaving only the soft catheter in the vein.
This component also plays a crucial role in iv catheterization—the process of inserting an IV catheter safely.
2. Catheter Tube
The catheter is a flexible plastic tube (usually made from medical-grade PTFE or FEP) that remains inside the vein after the needle is removed.
Functions:
Acts as a channel for fluid, medicine, or blood
Reduces tissue irritation
Prevents vessel trauma
Lars Medicare’s iv catheter tubes are soft yet durable—ensuring flexibility and stability throughout infusion therapy.
3. Flashback Chamber
The flashback chamber is located at the rear of the needle hub. It allows medical professionals to visually confirm vein entry when they see blood “flashback” inside.
Importance:
Provides instant confirmation of successful venipuncture
Prevents unnecessary multiple attempts
Enhances safety and accuracy during insertion
This chamber is a hallmark of advanced IV cannula design and an essential part of the device’s precision engineering.
4. Injection Port
The injection port (or medicine injection valve) allows additional medication or fluids to be administered without removing the IV line.
Benefits:
Reduces patient discomfort
Minimizes repeated needle insertions
Allows multiple drugs through a single access point
High-end models like Provein Safe-S from Lars Medicare integrate an injection port with a valve cap for optimal safety.
5. Wings (Grip Plate)
The wings are flexible, flat extensions located near the hub that help secure the cannula to the skin with medical tape.
Advantages:
Provides stability during movement
Prevents dislodgment
Enables secure fixation to the patient’s arm
Different models of IV cannula—like Provein, Safe Cath, and Provein Safe α—feature ergonomically designed wings for easy handling.
6. Luer Lock or Luer Slip Hub
The hub connects the cannula to the infusion line. Depending on the design, it can be a Luer Lock (threaded connection) or a Luer Slip (push-fit connection).
Differences:
Luer Lock provides a secure, screw-on attachment
Luer Slip allows quick and easy connections
Both types are offered by Lars Medicare in their wide range of IV cannula models.
7. Blood Control Valve (BCT)
Found in Safety IV Cannulas, the Blood Control Valve prevents blood leakage during needle withdrawal.
Key Function:
Blocks blood flow automatically when the needle is removed
Reduces contamination risk
Improves hospital hygiene and worker safety
This is part of the Safety IV Cannula BCT design—a hallmark of innovation from Lars Medicare.
8. Protective Cap
Once the cannula is inserted and the needle is removed, a protective cap is placed on the injection port or catheter hub to maintain sterility.
Purpose:
Prevents dust and bacterial contamination
Keeps the line clean for future use
This small component plays a big role in maintaining patient safety.
IV Cannula Sizes and Color Coding
To cater to different clinical requirements, IV cannulas are standardized by gauge sizes—each color-coded for quick identification.
Gauge (G) | Color Code | Use Case |
14G | Orange | High-volume transfusion, trauma care |
16G | Grey | Surgery and blood transfusion |
18G | Green | Adult patients – general use |
20G | Pink | Routine infusions |
22G | Blue | Pediatric & elderly patients |
24G | Yellow | Neonatal & delicate veins |
All IV Cannula Sizes manufactured by Lars Medicare comply with ISO 10555 standards to ensure precision and global compatibility.
Types of IV Cannulas Based on Design and Safety
1. Standard IV Cannula
Used for general infusion therapy. Available with or without injection ports.
2. Safety IV Cannula
Features a needle protection mechanism to prevent accidental injuries. → See Safety IV Cannula
3. Blood Control IV Cannula (BCT)
Prevents blood spillage and enhances infection control.
4. Winged and Non-Winged Cannula
Winged versions allow easier fixation, while non-winged are compact and used for short-term therapy.
5. Pediatric and Neonatal IV Cannula
Smaller sizes (22G–24G) for children and newborns.
IV Cannula Parts in Safety Models
The structure of a Safety IV Cannula includes additional components like:
Safety clip or shield
Blood control valve
Activation mechanism
Auto-lock design
These features provide maximum protection to medical staff and patients during intravenous therapy.
Manufacturing Standards at Lars Medicare
As a globally trusted iv cannula manufacturer, Lars Medicare Private Limited ensures every component is produced in a cleanroom-certified environment.
Quality Highlights:
ISO 13485 & CE Certification
100% EO Sterilized
Automated assembly for zero human error
Leak-proof testing at every stage
Transparent inspection and quality validation
Our IV cannula parts undergo multiple checks to ensure precision, flow consistency, and durability.
IV Cannula Assembly Process
The production process includes:
Molding of Parts – Using high-quality medical-grade polymers
Needle Assembly – Stainless steel needles attached to the hub
Catheter Insertion – Fitted with the needle guide
Flashback Chamber Integration – Ensures visibility
Sterilization and Packaging – Final EO sterilization under controlled conditions
This fully automated process ensures safety, sterility, and consistency across every IV catheter produced.
Importance of Choosing High-Quality IV Cannula Parts
Low-quality or poorly assembled cannulas can cause:
Vein irritation
Blockage or leakage
Risk of infection
Painful insertion
Hence, choosing a trusted IV cannula supplier like Lars Medicare ensures reliability, performance, and safety.
Applications Across Medical Fields
IV cannulas play a crucial role in:
Administering fluids, medications, and electrolytes
Blood transfusion
Chemotherapy
Parenteral nutrition
Critical care procedures
Emergency and trauma management
Their versatility and reliability make them indispensable in every healthcare setup.
Lars Medicare: Leading Exporter of IV Cannulas
With exports to 70+ countries, Lars Medicare is recognized globally as a top IV cannula exporter.
Our wide range includes:
Provein – Standard IV Cannula
Provein Safe – With safety clip
Provein Safe α – Automatic lock system
Provein Safe-S – With injection port
Safe Cath and Safe Cath Pro – Blood Control Technology
Every model reflects cutting-edge design and uncompromising safety.
Sustainability and Ethical Manufacturing
Lars Medicare ensures:
Latex-free and DEHP-free materials
Minimal carbon emissions during production
Waste recycling initiatives
Eco-friendly packaging
This commitment to sustainability sets us apart among global iv catheter manufacturers.
Conclusion
Understanding the IV Cannula parts and their functions provides deep insight into the complexity and precision behind a seemingly simple medical device.
Each component—from the needle to the flashback chamber—is crucial for ensuring safe, reliable, and comfortable intravenous therapy.
As a leading IV cannula manufacturer, supplier, and exporter, Lars Medicare Private Limited continues to deliver medical devices that uphold the highest standards of quality, safety, and innovation—saving lives across the globe.
FAQs
1. What are the main parts of an IV Cannula?
Needle, catheter, flashback chamber, injection port, wings, and hub.
2. What is the function of the flashback chamber?
It confirms vein entry by showing a flash of blood during insertion.
3. What materials are IV cannula parts made of?
Medical-grade PTFE or FEP for the catheter and stainless steel for the needle.
4. What is the role of the blood control valve (BCT)?
It prevents blood leakage during cannulation, enhancing safety.
5. Who is the top IV cannula manufacturer in India? Lars Medicare Private Limited
— recognized globally for its precision-made, high-safety IV cannulas.
