Custom Hypotubes

Fluoropolymer coatings for surgical hypotubes

With minimally invasive surgical procedures on the rise there is a greater need to design and enhance small diameter biopsy needles and surgical supplies that can execute more functions in a smaller working diameter opening. Miller-Stephenson’s PTFE coatings are specifically designed to grip and adhere to inner and outer diameters of custom surgical device substrates designs like hypo tubes, cannula’s, flutes, sheaths and many more. This is where Miller-Stephenson’s advanced fluoropolymer chemistry can advance.  

Successfully Coated Items

•Dental Arch Wires

• Bi-Polar, Mono-polar Cautery Tips

• Loop, Hook & Roller Ball Cautery Electrodes

• Surgical Trocars

• Surgical Hypodermic Needles

• Contact us for specific requests!


Coating Application & Recommendations

All Miller-Stephenson’s Fluoropolymer coatings can be applied via spray, dip or spool-to-spool methods. Proper post-application curing equipment is critical to guarantee performance and durability. Acceptable curing equipment includes high-temperature ovens which can safely maintain temperatures of 246 °C  (475 °F) or utilize IR ovens. This is to ensure proper sintering of the coatings onto the wire and promote the best surface characteristics that can be achieved.



ASTM 1894 Coefficient of Friction

ASTM D3359 Adhesion Test

ISO 7802 Wire Wrap Test

ISO 11070 Corrosion Resistance Test

• Coated smooth stainless steel panels passed Adhesion test, ASTM-3359

• Coated stainless steel catheter guidewires passed flexibility/adhesion tests, ISO 7802 Annex F wrapping test

• Coated stainless steel catheter guidewires passed corrosion resistance, ISO11070 Annex B, saline soak test

**All Miller-Stephenson’s formulations generate very uniform thin films which exceed all ISO and ASTM requirements.



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We offer our customers the ability to utilize the coating services of the most highly regarded medical coater in the United States. They provide strictly medical coating operations on some of the worlds most difficult geometrical device designs. This exceptional coating service is offered to any customer or OEM that does not have the ability to coat in-house or is looking to have a complete pre-coated turn-key solution product made and delivered..

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