Annealing is a term that is typically used to refer to a process of heat treatment that is commonly utilized in science polymers to enhance the thermal and mechanical properties by altering the shape.
It is a procedure where the Polymers are heated within a desiccated environment to a temperature that is between the glass transition and melting temperatures for a certain amount of duration (normally between 1 to 10-hours). Continue reading to know more about medical balloon tests.
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What is the procedure for balloon angioplasty and what are the necessary thermal and mechanical properties?
Many different types of catheters are currently used in the medical field, but all of them have similar working methods. When catheters are inserted into the human body, they are commonly slid in and guided through by using openings or ducts such as arteries or the urethra until they reach the deploying position.
Previous and during the catheter insertion, the balloon is folded and located in circumscribe passing guide. Once the catheter is set in place, the balloon is deployed by inflating it to nominal pressure.
These operating conditions require the balloon to have thin walls to freely move through the guide but also to be high pressure resistant with burst pressure between 10 and 20 atm, nominal pressures between 5 and 10 atm, high dimensional stability, and high fatigue resistance.
Finally, balloon angioplasty also requires high-temperature stability since most balloons are conducted to a thermal manufacturing process after being blown such as laser bonding.