Kink-proof Medical Tubing Keeps Gases and Liquids Flowing
Smooth-Bor® tubing made with DuPont™ Hytrel® thermoplastic polyester elastomer provides highly reliable service as reusable, sterilizable tubing for respiratory therapy and shows potential for high-performance industrial applications as well.
Smooth-Bor® tubing is an innovative kink-resistant design consisting of a thin, transparent tube with a robust, cream-colored helical bead on its outer surface. Typical medical applications for Smooth-Bor® products made of Hytrel® include breathing tubes for respiratory therapy, sleep apnea treatment, anesthesia administration, and evacuation of smoke produced during cautery surgery.
In industrial or food-processing equipment, potential applications could take advantage of the combination of flexibility, chemical, oil and solvent resistance, flex life, low-temperature toughness and high-temperature capabilities of Hytrel® plus the kink resistance, transparency and other benefits derived from the special construction of Smooth-Bor® tubing.
Smooth-Bor® tubing using Hytrel® is made with inside diameters from 10 to 38 mm (0.394 to 1.50 in.). Maximum length, which depends on tube diameter, ranges up to 305 cm (120 in.). End fittings are either an integral part of the tubing or separate parts made of silicone rubber or Hytrel® that are adhesive-bonded to the tubing.
Materials Selected and Why
Smooth-Bor Plastics relies on a Hytrel® grade that fulfills requirements for flexibility, compliance with rigorous purity standards, toughness and resistance to flex fatigue, to a wide range of chemicals and to traditional medical sterilization procedures.