Kolben der Spritze

A piston of syringe is a common medical device used to inject medications or other liquids into body tissue or blood vessels. It consists of many parts, one of the important parts is the piston. The piston plays a key role in a syringe, responsible for controlling the entry and exit of liquid and accurate measurement of dosage.

1.Structure of piston of syringe

The piston of syringe usually consists of a cylindrical rod and a matching sealing ring. The piston rod is usually made of metal or plastic, with one end connected to the syringe handle and the other end connected to the sealing ring. The sealing ring is usually made of elastic material such as rubber or silicone. It fits tightly on the inner wall of the syringe to prevent drug leakage.

2.Material of syringe piston

Material selection for the syringe plunger is important because it needs to have some key performance characteristics. First, the piston material must be strong and stiff enough to withstand the pressure of the injection. Secondly, the piston material should have good corrosion resistance in order to adapt to the characteristics of various drugs.

In addition, the piston material should also have good lubricity to ensure smooth movement of the piston inside the syringe.

Common piston of syringe materials include the following:

2.1. Stainless steel:

Stainless steel piston has high strength and good corrosion resistance, and is suitable for the injection of most drugs. Stainless steel pistons often require special surface treatment to improve their lubricity.

2.2. Polypropylene:

Polypropylene is a common plastic material with good mechanical properties and corrosion resistance. Polypropylene plungers are commonly used in disposable syringes and are relatively inexpensive.

2.3. Polytetrafluoroethylene (PTFE):

PTFE is a material with excellent corrosion resistance and low friction coefficient. It is often used in syringes that have higher requirements for drugs, such as syringes for chemical drugs or high-viscosity drugs.

3.Applications of piston of syringe

piston of syringe are widely used in the medical field. Here are some common application scenarios:

3.1. Drug injection:

pistons of syringe are widely used to inject drugs into human tissues or blood vessels. A doctor or nurse uses a syringe to measure and control the dose of medication, which is then pushed into the patient’s body via a plunger. The accuracy and reliability of pistons of syringe are important to ensure safe and effective drug therapy.

3.2. Blood collection:

During the blood collection process, nurses often use syringes to draw blood samples. The movement of the piston controls the flow of blood in and out, ensuring accurate collection and avoiding blood leakage.

3.3. Mixing and Preparation of Injections:

In some cases, doctors or pharmacists need to mix different drugs or solutions together to prepare a specific injection. The movement of the piston of syringe can effectively draw different liquids into the syringe and mix them with proper operation.

3.4. Syringe Pumps:

Piston of syringe designs are also used in syringe pumps. A syringe pump is an automated injection system that continuously injects medication into a patient at a preset rate and dose. Precise motion control of the piston allows syringe pumps to provide more precise drug delivery.

During the syringe design and manufacturing process, piston selection and optimization are crucial. Syringe plungers must have good sealing, corrosion resistance, and lubricity to ensure safe and effective drug delivery. At the same time, the piston of syringe should also meet the relevant standards and regulatory requirements of the medical industry.

To sum up, the piston of syringe is an integral part of the syringe. Its construction and material selection play an important role in the performance and functionality of the syringe. With proper design and selection, pistons of syringe can ensure accurate dosing and safe delivery of drugs, providing medical workers with an efficient and reliable tool to promote patient treatment and recovery.