What is a covered stent?
The covered stent is a flexible tube used to repair or support the damaged part of the blood vessel. These stents are made of metal frame and are covered with an extremely resistant fabric. Placing the covered stent in a damaged blood vessel is a relatively simple surgery, even if the blood vessels are around the heart.
The frame inside the covered stent is made of a metal network that prevents the loss of its form, because blood pressure usually applied to the wall wall is applied to the stent instead. A resistant fabric such as polyester is mounted around the frame. In some cases, this substance can only cover a part of the stent or can only cover the inner or outer side. The use of stent, which is completely covered, reduces the risk of tumor development due to the device, although it is not always practical to cover the entire stent.
The most common usage and covered stent is to prevent the aneurysm from rupture of the blood vessel. Aneurysm of the sonsObří that the blood vessel a balloon due to the weakness in the wall wall. Over time, balloons are prone to tearing or tearing. When this happens in the main blood vessel, such as aorta, it can lead to the patient's death. The use of an indoor stent to provide structure and support of damaged blood vessels can significantly reduce the risk of the patient that it will have a serious episode related to the presence of aneurysm.
In most cases, the covered stent can be inserted into the patient's blood vessel by a relatively non -invasive procedure. The doctor puts the stent into the container through an easily accessible area and feeds the stent over the container until it reaches the damaged parts. While the doctor maneuver the covered stent into the position, it is infected in a narrow tube, allowing the doctor to move through the stent through the sprava.
Once the covered stent reaches the damaged parts of the blood vessel, the doctor uses the balloon to expand the stent to its full size. Once the stent has expanded, it fits comfortably into the wall of the damaged blood vessel. The blood pressure on which it was subjected toThose blood vessels, now instead of pushing against the stent, preventing the wall of the blood vessel from further damage.