A disposable syringe consists of three main parts, each playing a vital role in its function: the needle, barrel, and plunger with gasket.
Parts of a Disposable Syringe
Here's a more detailed look at each component:
| Part | Description | Function |
|---|---|---|
| Needle | A hollow, sharp-pointed tube, usually made of stainless steel, that is inserted into the body. | Facilitates the injection or withdrawal of fluids. |
| Barrel | A cylindrical tube, typically made of plastic or glass, with markings indicating volume in milliliters (mL) or cubic centimeters (cc). | Holds the liquid to be injected or withdrawn and provides a measurement scale for accurate dosage. |
| Plunger | A piston-like component that moves within the barrel, consisting of a rod and a rubber or plastic tip (gasket) for a tight seal. | Creates a vacuum to draw fluid into the syringe or applies pressure to expel it. The gasket ensures a leak-proof seal. |
Key Functions
- Precise Delivery: The barrel's markings allow for accurate measurement of medications, ensuring precise dosage.
- Sterile Transfer: The needle, combined with the overall sterile design of the syringe, facilitates the safe and hygienic transfer of fluids.
- Fluid Management: The plunger and gasket work together to create the necessary pressure for fluid intake and expulsion, with the gasket ensuring a tight seal.
In summary, these three parts, the needle, barrel, and plunger with gasket, work together to form a functional disposable syringe. Their design and construction enable safe and accurate administration of fluids for medical purposes.
