How to Choose Catheter Mandrel?

When selecting materials for tip forming machine catheter core pins(catheter mandrel), we should consider the following aspects:

  • Strength and Rigidity: The material used for catheter core pins should be strong and rigid enough to maintain shape stability during the catheter tip molding process. Higher strength and rigidity ensures that the catheter core pin can withstand the stresses and pressures of the molding process and prevent bending or deformation. Material selection should be based on the intended catheter shape and size.
  • Thermal conductivity: Catheter mandrels((catheter coil needle) need to be heated and cooled rapidly during tip molding to form the desired catheter shape. Therefore, the material of the catheter mandrel should have good thermal conductivity in order to transfer heat efficiently and enable rapid cooling. Materials with poor thermal conductivity may result in uneven temperatures during the molding process, affecting the accuracy and consistency of the catheter shape.
  • Abrasion and corrosion resistance: The catheter mandrel may come into contact with the forming mold or other surfaces during the tip forming process, so the material should have good wear resistance. In addition, since chemical solvents or liquid media may be involved in tip molding, the material of the catheter mandrel should be corrosion-resistant to prevent damage or deformation.
  • Surface Smoothness: The surface smoothness of the catheter mandrel is critical to the quality of the catheter’s inner wall and to fluid patency during catheter use. Materials should be selected to ensure that catheter mandrels have a smooth surface to avoid surface defects or unevenness, thereby reducing friction and impurity buildup on the inner walls of the catheter.
  • Cleaning and Sterilization Requirements: Catheter mandrels should be easily cleaned and sterilized to ensure the sanitary and sterile nature of the final catheter product. Material selection should take into account the chemicals and methods used in the cleaning and sterilization process, as well as the resistance of the material.
  •  Cost: The cost of materials is also an important consideration. The cost of different materials may vary considerably.

We hope this article will help you choose a suitable catheter mandrel. If you have any other questions, please contact us. info@cathetermelt.com

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