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Slip Coatings For Catheters


medicalNon-Stick Coatings are used widely in the medical industry, there are coatings for all the different procedures.  Most common of the non-stick medical instruments are catheter guidewires, they use hydrophilic coatings to prevent unnecessary patient trauma and possibly fatal complications such as Stick Slip.

Catheter Guidewires

Catheter guidewires are used to enter the veins to perform complex procedures on organs such as the brain and the heart. It is necessary for the guidewire to be coated in a hydrophilic material to reduce friction as the wire is pushed through. The wire needs to be able to steer and pass easily to its desired destination without causing the patient too much discomfort.

Hydrophilic Coatings

The plastics used to create the catheters are hydrophobic, they repel liquids, so when they come into contact with the body’s tissue it could be painful and even harmful for the patient. Using a hydrophilic coating on the plastic lubricates it once it comes in contact with bodily fluids like blood. Decreasing the friction will minimize any pain the patient might suffer and will help the catheter pass through the veins efficiently.

The benefits of using a hydrophilic coating are:

  •       It will ease the insertion, manipulation and removal of devices.
  •       They have a proven surface biocompatibility.
  •       The hydrophilic coating is inert.
  •       Irregular shaped devices can be coated.
  •       Hydrophilic coatings are permanently bonded.
  •       Low cost and reliable, high or low volume processing.

Stick Slip

Stick slip is the spontaneous jerking motion that occurs when objects slide over one another. If this happens in the body it can often lead to fatal complications. The hydrophilic coatings on guidewires reduce the risk of stick slip greatly.

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16:17 on 2014-07-29