What are Catheter Mandrels?

The catheter mandrel is an elongated metal rod that is shaped to match the final catheter lumen. It plays a key role in the catheter manufacturing process. 

The following are the functions of the mandrel in the catheter production process:

  • Support structure: The primary role of the mandrel is to provide support and stability during the manufacturing process of the catheter. The catheter manufacturing process typically involves thermoforming or extrusion, which means passing a hot, soft material through a mold to form the shape of the catheter. They are placed inside the catheter to maintain the shape of the catheter and prevent it from deforming or folding during the manufacturing process.
  • Inner lumen shape: The shape of the  mandrel matches the inner lumen shape of the catheter. During the catheter manufacturing process, the material is wrapped around the mandrel and then  heated or pressurized to form an internal cavity shape with the catheter mandrel and mold. Once the catheter material cools or solidifies, the catheter mandrel is removed, leaving behind the lumen of the catheter.
  • Accuracy and consistency: The design and manufacturing of  mandrels are critical because they directly affect the lumen shape and size of the catheter. Precise catheter mandrels ensure that the lumen of the catheter is of consistent size and meets specific requirements and specifications. This is critical to ensure the performance and functionality of the catheter while in use.

In summary, catheter mandrels play an important role in the catheter manufacturing process, providing support and stability, defining the shape of the catheter lumen, and ensuring catheter accuracy and consistency. They are an integral part of the catheter forming machine and help produce high-quality catheter products.


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