The filtration of medical fluids is an important step in ensuring the purity and absence of impurities during the medical process. The following are detailed steps and considerations for medical liquid filtration:

1、 Preparation before filtration

Choose appropriate filtering equipment and materials:

Select the appropriate filter based on the properties of the medical liquid, such as viscosity, color, impurity type, etc. For example, for liquids containing larger particle impurities, a pre filter with a larger pore size can be chosen.

Choose filter materials compatible with medical fluids to avoid chemical reactions or contamination.

Cleaning and disinfection:

Before use, ensure that the filtering equipment and containers are clean to avoid cross contamination.

Disinfect the filtering equipment and containers as needed to ensure a sterile operating environment.

2、 Filtering process

Pre filtering:

If medical fluids contain large particles or impurities, pre filtration should be performed first to remove these impurities and protect subsequent filtration equipment.

Pre filtration can be performed using larger pore membranes or gauze.

Main filter:

Use a filter with appropriate aperture and filtration accuracy for primary filtration. Select the appropriate filtration accuracy based on the requirements and filtration purpose of medical fluids.

Control the flow rate and pressure of medical fluids to avoid membrane damage or incomplete filtration caused by excessive flow rate, and to prevent membrane deformation or rupture caused by excessive pressure.

During the filtration process, regularly check the quality of the filtrate, including clarity, color, pH value, and other indicators. If the quality of the filtrate does not meet the requirements, filtration should be stopped immediately, the cause should be checked, and corresponding measures should be taken.

Processing after filtering:

After filtration, the filtrate should be treated appropriately, such as disinfection, storage, etc., to meet the needs of medical use.

Clean and disinfect filtration equipment to remove residual medical fluids and microorganisms, ensuring that the equipment is in a sterile state for the next use.

3、 Precautions

Follow the operating procedures:

During the filtration process, strictly follow the operating procedures and disinfection standards to ensure the sterility and safety of the operation.

Please note the usage restrictions of the filter:

Different filters have different usage limitations, such as lifespan, maximum filtration capacity, etc. During use, pay attention to checking the status of the filter and replace damaged or restricted filters in a timely manner.

Choose the appropriate filtering material:

Choose appropriate filtering materials based on the properties and requirements of medical fluids, and avoid using materials that are incompatible with medical fluids.

Record the filtering process:

Record key parameters and operational details during the filtration process, such as filtration time, flow rate, pressure, filtrate quality, etc., in order to trace and evaluate the filtration effect.

By following the above steps and precautions, the filtration effect and safety of medical fluids can be ensured, providing pure and impurity free fluids for the medical process.