In my country, about 70% of strokes are cerebral infarction. Due to the clot obstruction, surrounding brain cells will continue to die due to lack of oxygen. Therefore, timely and early treatment within the time window can "save" more brain cells and avoid further damage to the brain.
Compared with intravenous thrombolysis, endovascular thrombectomy is a newer treatment method for cerebral infarction in recent years, including stent thrombectomy and aspiration thrombectomy.
Endovascular thrombectomy
The operation is performed through a small catheter entering the artery, reaching the site of cerebral infarction and removing the thrombus from the body together.
The technology in this area is undoubtedly more advanced and mature abroad. Foreign company Capture Vascular has launched their Mega Vac medical thrombectomy system. It can remove blood clots more safely and avoid residual blood clots. The development of science and technology brings more possibilities to the medical industry.
Technical operating principle
Thrombus extraction
After thrombus formation, the Mega Vac catheter will follow the blood vessel to find the thrombus.
After that, the funnel mouth at the bottom of the catheter slowly opens, and human blood pressure will cause the funnel mouth to open to the maximum and closely fit the blood vessel wall. Block the blood flow in the blood vessel for a short period of time to prevent the blood flow from carrying thrombus fragments into the underlying blood vessel to form a distal embolism.
You don’t have to worry about crushing the blood vessel wall when the funnel opens. The radial design allows the blood vessels to bear only a slight amount of pressure.
Thrombus aspiration
After that, a thin tube will protrude from the funnel, pass through the thrombus, and open on the other side. Then, when the Thin Tube King is retrieving, it will push the thrombus into the catheter without leaving any residue. After the blood clot has been collected, the funnel will shrink back to its original size and the blood vessel will be unobstructed again.
This system can remove visible thrombi within two minutes without causing distal embolism. It is a simple but practical technology.
Thrombectomy has shown good therapeutic effects and safety for patients with mild brain damage. However, the jury is still out on whether thrombectomy is suitable for patients with severe brain damage.
At present, this system has obtained European CE certification and integrates more than 30 patents. Changes in technology have driven the rapid development of the medical industry. As a medical worker, the editor also hopes that advanced technologies can be widely used in China in the future to save more people suffering from diseases.