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Polyurethane Medical Tubing

Polyurethane (PUR) is a common medical grade resin that is versatile enough to be used in countless medical devices and extrusions. Polyurethane tubing merges properties of both rubber and plastic and is known for its exceptional toughness and tensile strength. The material tends to form strong bonds with hydrophilic coating systems.

Polyurethane is highly biocompatible, and softens at body temperature, ensuring optimum patient comfort when used as a catheter material. It is commonly used in the construction of epidural catheters, compliant balloon products, and similar medical devices.

DUKE Extrusion offers polyurethane tubing in numerous varieties to meet the unique requirements of customer applications. Our polyurethane extrusion is available in durometers ranging from 62A to 75D. Typically clear, polyurethane can be colored as needed, and can be compounded with radio-pacifiers and other additives to enhance its lubricity and other physical properties.

To learn more about our polyurethane medical tubing and catheter material, contact us today.

Properties of Polyurethane

Polyurethanes are segmented polymers that are made from three parts: the backbone, the diisocyanate, and the chain extender, each providing a different characteristic to the material. The backbone allows the polymer to be flexible, while the diisocyanate and the chain extender work together to form a cross-link that gives polyurethane its strength and elongation.

The diisocyantes of polyurethane come in two varieties: aromatic and aliphatic. The aromatics use benzene rings to make the resin stronger, and they tend to be less expensive. Aliphatics, however, are more resistant to chemicals and are made with hydrocarbon backbones.

Benefits of Polyurethane Medical Tubing

With many medical tubing materials available, polyurethane stands out for its strength, flexibility, and tear resistance. In many of its applications, tubing can spend much of its time bending and running against other materials. Without polyurethane, tubing will weaken and damage over time because of the continuous abrasion.

PUR is strong and flexible enough to handle the bending and rubbing, but its also soft enough to provide additional comfort to the patient. It is elastomeric and used in many sensitive applications like catheters where comfort is essential.

In addition to these benefits, polyurethane offers many more including:

  • Availability of a wide range of durometers
  • High tensile strength
  • Good biocompatibility
  • Customized chemistry for different applications
  • Plasticizer-free formulations
  • Resistance to degradation

Polyurethane tubing can be divided into three main categories:

Long Term Implants

  • ChronoFlex® medical extrusion
  • Carbothane® medical extrusion

Short Term Use

  • ChronoSil®
  • ChronoThane™
  • Estane® medical extrusion
  • HydroThane™
  • Pellethane® medical extrusion
  • Tecothane® medical extrusion
  • Texin® medical extrusion

Elastomeric Polyurethanes

  • ChronoPrene™
  • PolyBlend™
  • Tecoflex® tubing

Polyurethane Medical Tubing Applications

The characteristics of polyurethane make it perfect for many medical applications, and more are being utilized every day. Our medical tubing is used for purposes like:

  • Cardiovascular treatment devices
  • Catheter Tubing
  • Intra-aortic balloon pumps
  • Surgical Drains
  • Tracheotomy devices
  • Urological devices
  • Dialysis devices
  • Feeding tubes

Contact DUKE Extrusion for Medical Polyurethane Tubing

We provide stock catheter tubingcustom multi-lumen tubing, and a wide variety of other tubing types. Our fast, efficient manufacturing processes, superior quality products, and innovative designs help us consistently meet or exceed customer expectations.

Request a quote on the polyurethane extrusion your application requires, or contact us for more information.