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Clinical laboratory analysis instruments: Injection molding of blood analyzer parts-AbleMed


Hematology analyzer is a kind of testing and analysis instrument often used in clinical laboratories, biological research laboratories, hospitals and other medical institutions. It can monitor and analyze various components in blood samples. Some common test parameters are: red blood cell count (RBC), white blood cell count (WBC), hemoglobin concentration (Hb), platelet count (PLT), mean corpuscular volume (MCV), red blood cell distribution width (RDW), neutrophil percentage (NEUT%) and some functional indicators.

Through these parameters, a variety of diseases can be diagnosed and monitored, such as anemia, inflammation, rheumatoid arthritis, liver function, kidney function, diabetes, blood tumors, leukemia and many other diseases. The main processing and manufacturing methods of this equipment are CNC and injection molding. Some parts will be surface treated and finally assembled and tested. Today we mainly talk about the injection molding process of hematology analyzer parts.


Injection molded parts of blood analyzers:

Let's first find out some plastic parts on blood analyzers, some shells and chassis, control panels and buttons on them, pipes and joints, sample containers and racks, sample filter parts, and some sealing rings. Most of these devices are manufactured through injection molding, and there will be more detailed requirements for materials and processes depending on the specific use.

AbleMed Injection Molding Facility

Injection molding process of blood analyzer parts:

First, we will design the mold according to the size, shape and requirements of the parts, and then use EDM and CNC to find the mold. Then, we will pre-treat and melt the plastic raw materials we prepared, and then start injection molding. I have listed this process for your understanding.

1. Preparation

Mold preheating: Start the mold preheating system of the injection molding machine to preheat the mold to the appropriate temperature and ensure uniform temperature distribution. 

Raw material preparation: Prepare the required plastic particles or material columns and accurately measure them according to the material requirements of the parts. 

2. Mold opening and clamping

Mold opening: Open the mold of the injection molding machine and prepare for the next injection cycle. 

Mold clamping: Clamp the mold to ensure that the mold remains stable and sealed during the injection molding process. 

3. Injection

Plastic melting: Start the melting system of the injection molding machine to heat the plastic particles to a molten state. 

Injection molding machine adjustment: According to the design and material requirements of the part, adjust the injection parameters of the injection molding machine, including injection pressure, injection speed, injection time and melting temperature. 

Injection: Inject the molten plastic material into the injection cavity of the mold through the injection system of the injection molding machine. 

4. Compression and cooling

Compression: After the plastic is injected into the mold, the injection molding machine applies additional pressure to ensure that the plastic fills every detail of the mold. 

Cooling: Start the cooling system of the mold, and quickly cool and solidify the plastic in the injection cavity through cooling water or air.

5. Mold opening and demolding

Mold opening: Once the plastic cools and solidifies, open the mold and extract the molded parts.

Molding: Use a manipulator or manual tool to remove the molded plastic parts from the mold to avoid damaging the parts or molds.

Next, there will be some post-processing, such as trimming and deburring, painting, polishing, and silk-screening. If the customer requires it, some factories will also assemble and assemble, and then conduct quality control inspections. Qualified products will be packaged and shipped to customers.


How to choose a medical equipment parts injection molding factory?

When choosing a parts processing factory, the medical industry should try to choose a factory whose business is mainly medical. These factories have accumulated a lot of experience in medical parts and can provide you with some help in the early stage of the plan, such as optimizing the structure, material suggestions, processing plans, cost reduction, etc. Moreover, these factories are familiar with some characteristics and quality management of medical treatment, and can also respond quickly to various test reports.

However, in the specific selection, it is necessary to ensure the factory's quality management system, such as the "ISO13485 Medical Device Quality Management System", and have a comprehensive consideration of the implementation of the system, the quality control of parts, the processing equipment and services, and delivery.

If you are looking for a manufacturer of medical device parts, please choose AbleMed. We specialize in precision parts processing for the medical industry. We mainly process high-precision parts for medical robots, medical laboratory equipment, and clinical testing and analysis instruments. We can provide hydrogen peroxide low-temperature plasma sterilization and non-fading surface treatment. Our email: Phone: +86 173 2215 6162.

AbleMed Injection Molding Facility


What are the commonly used injection molding materials in medical applications? 

Polyurethane (PU), polylactic acid (PLA), polycarbonate (PC), polypropylene (PP), polyethylene (PE), polyetherketone (PEEK), polytetrafluoroethylene (PTFE), polyoxymethylene (POM), etc.

Are the requirements for medical grade injection molding strict? 

Medical grade injection molding has very strict requirements, such as high biocompatibility, chemical stability, physical properties, and precise dimensions and geometric accuracy. The materials used must be non-toxic, non-irritating, and non-allergic to human tissues and organisms, and be resistant to corrosion from chemicals and disinfectants. It must also comply with relevant medical industry standards and regulatory requirements, such as FDA and CE certification, to ensure its safety, effectiveness, and compliance.

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