When you say “stent,†this means that you are referring to the tube that will make sure that it will support the blood vessel or the canal. This will only be placed temporarily to provide the needed support. The use of stent has been done since the 1960s. When you say “stint,†this means that you are referring to a certain “period of time.†There are also some people who would use “stint†when they are referring to misery or something that is related to frugality. The difference in vowels has definitely changed the meaning of these two words entirely and they should not be confused with each other.
It can be confusing to know the differences between words when they seem to sound the same in the beginning. The stent is the tube that will usually be placed inside the duct or canal. Sometimes it is placed inside the blood vessel. It is meant to provide tubular support, especially when there are some treatments that are being done to save living things. When you say stint, this refers to the time that is spent on doing work. Usually, stint will refer to a fixed amount of time. For instance, someone might say, “Her acting stint is done.†This means that the person has acted for a certain period of time that was fixed.