Bands of heat shrink tubing can be used as micro hose clamps on balloon catheters and other devices to reinforce bonds and help prevent failure under pressure. A narrow band of heat shrink tubing is applied over the end of the balloon. The polyester tubing, with its high hoop strength, grips the part much like a hose clamp, reinforcing the bond and keeping it from lifting off. It also provides a smooth transition without adding significantly to the bond diameter. The tubing can also be used to terminate braiding, spring coils and other parts to provide a smooth transition.
The key properties of polyester heat shrink tubing in micro hose clamp applications are:
Has substantial hoop strength to reinforce bonds and other areas Very thin so it does not add significantly to the device diameter Can help smooth diameter transitions Can be used to terminate braiding, springs, etc. Adhesive can be UV-cured through the clear tubing