18 November 2019
In Germany, around 270,000 people suffer from a stroke each year. This sudden disruption to the supply of blood in the brain requires prompt medical attention. If not treated in time, a significant number of brain cells can die, leaving the patient with lasting damage such as paralysis or a speech impediment. In the worst case, it can prove fatal.
The therapy of choice is a thrombectomy: a thin catheter is inserted into an artery, via the groin, and advanced to the aorta, from where it is threaded all the way up to the blocked blood vessel in the brain. Once the blocked vessel has been reached, a special instrument known as a stent retriever is opened to reveal a tiny, basket-like mesh that becomes firmly entangled with the blood clot. The catheter is then withdrawn, along with the clot. This procedure takes from 45 minutes to three and a half hours. The ability to conduct a thrombectomy requires long training and plenty of practice. Depending on the specific case, anything between ten minutes and one and a half hours are required to navigate the catheter to the blood clot.
Researchers from the Project Group for Automation in Medicine and Biotechnology PAMB had the idea to use a robotic system – in the form of a computer-controlled catheter – to establish a faster and more reliable alternative to this painstaking procedure. In a new departure, they have harnessed the power of artificial intelligence to guide the catheter autonomously to the site of interest. “The surgical intervention itself, in which the blood clot is removed by means of the stent retriever, is still carried out by a physician. But the actual journey to the blocked blood vessel, where various anatomical difficulties have to be negotiated, is undertaken solely by an autonomously controlled catheter,” explains Johannes Horsch, one of the project group’s engineering scientists. “This procedure can be used not only for removing blood clots but also in other types of endovascular surgery, such as treatment for cardiac infarction or liver tumors.”
https://www.medica.de
AI enables autonomous navigation of catheters
Fraunhofer researchers have been investigating whether artificial intelligence might be used to steer a catheter automatically and reliably to a blocked blood vessel. The research team will be demonstrating this new technique at Medica 2019 (Hall 10, Booth G05).
 Photo: Fraunhofer IPAArtificial intelligence may soon assist neuroradiologists in endovascular surgery. |
The therapy of choice is a thrombectomy: a thin catheter is inserted into an artery, via the groin, and advanced to the aorta, from where it is threaded all the way up to the blocked blood vessel in the brain. Once the blocked vessel has been reached, a special instrument known as a stent retriever is opened to reveal a tiny, basket-like mesh that becomes firmly entangled with the blood clot. The catheter is then withdrawn, along with the clot. This procedure takes from 45 minutes to three and a half hours. The ability to conduct a thrombectomy requires long training and plenty of practice. Depending on the specific case, anything between ten minutes and one and a half hours are required to navigate the catheter to the blood clot.
Researchers from the Project Group for Automation in Medicine and Biotechnology PAMB had the idea to use a robotic system – in the form of a computer-controlled catheter – to establish a faster and more reliable alternative to this painstaking procedure. In a new departure, they have harnessed the power of artificial intelligence to guide the catheter autonomously to the site of interest. “The surgical intervention itself, in which the blood clot is removed by means of the stent retriever, is still carried out by a physician. But the actual journey to the blocked blood vessel, where various anatomical difficulties have to be negotiated, is undertaken solely by an autonomously controlled catheter,” explains Johannes Horsch, one of the project group’s engineering scientists. “This procedure can be used not only for removing blood clots but also in other types of endovascular surgery, such as treatment for cardiac infarction or liver tumors.”
https://www.medica.de
More news about "Medica":
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