I note the volume has picked up in this stock lately.
For info
-->What is a AAA stent graft?
The aorta is one of the main arteries of the body. When it becomes diseased it thins. As it thins it starts to balloon out under pressure from the blood flow. This is called an aneurysm of the aorta. Most aneurysms occur in the abdominal cavity hence abdominal aortic aneurysm or AAA or triple A for short Many aneurysms eventually rupture leading to catastrophic blood loss and death in many cases.
If an aneurysm is detected it can be treated by open surgery repair, but this is an invasive and complicated procedure not without its dangers for the patient. An alternative is the use of what is called a stent graft. A stent graft is a metal device, which gives the piece its strength, and is coated with cloth, often polyester, which when in place stops the blood gaining access to the ballooned area of the aorta.
The stent in the Anson AAA stent graft is made from nitinol, a shape memory alloy. If you think of your bathroom sponge at home when squeezed into the tiniest ball possible reverts back to its original shape when the pressure is released. The Anson graft is the same. The graft is inserted into the groin using a catheter and maneuvered into position before the protective sheath is removed and the graft expanded into shape. This minimally invasive procedure causes less trauma for the patient and is becoming the de-facto standard.
What is special about the Anson graft?
- It is so flexible it can go around 90 degree corners that most if not all other grafts can't.
- It is a single piece device rather than a modular device which are assembled in the aorta, perhaps through two access holes. One hole is better than two. Some modular devices have suffered fractures due to the stresses placed on them in the aorta
- Some devices are so rigid that the rings that make up the stent have fractured which is bad news for the patient.
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2bob