A medical syringe is a medical device consisting of a syringe, piston, and needle. It is used for the precise injection of medication or the extraction of bodily fluids and features single-use, precise markings, and aseptic design.
Core Features
Structural Composition
Syringe: A transparent tubular structure with clearly marked volume graduations (e.g., 1ml, 5ml, 10ml). It is commonly made of polypropylene (PP) or glass for easy observation of the medication's state.
Piston: Made of rubber or silicone, it fits tightly against the inner wall of the syringe and controls the flow of liquid by pushing or pulling.
Needle: Made of stainless steel, available in different sizes (e.g., 21G, 25G). The diameter and length are selected according to the intended use (subcutaneous, intramuscular, intravenous injection).
Usage Characteristics
Single-use: Modern syringes are mostly designed for single use to prevent cross-infection and reduce the risk of blood-borne diseases such as HIV and hepatitis B.
Aseptic Packaging: Sealed and sterilized at the factory. The integrity of the packaging and the expiration date should be checked before use.
Precise Dosing: Scales are accurate to the smallest unit (e.g., 0.1 ml or insulin "units"), ensuring medication safety.
Classification and Types
By Use: Divided into disposable syringes and reusable syringes (e.g., glass syringes).
By Function: Includes regular syringes, insulin syringes, pre-filled syringes, and needle-free syringes.
By Material: Primarily plastic (lightweight, low cost), glass (high precision, corrosion resistant), and metal (durable, sterilizable).
