Current methods of preventing embolisms when inflating angioplasty balloons require a separate filter to be placed down the stream to catch any loose particles. An Israeli company called Angioslide has developed a new balloon catheter by the same name that features the filter, and an aspiration technology, within the balloon itself. Since only one device is inserted, the procedure can be done safer with probably fewer potential complications.
Some details about the device from Globes:
After the balloon is inflated within the blood vessel, a hook on the guidewire is gently pulled backwards, pulling after it the far end of the balloon, so that it folds back within the balloon, forming a hollow cone. This creates negative pressure in the space vacated by the end of the balloon that draws into it the problematic debris. Then, when the balloon is deflated, the debris at the bottom of the cone is trapped inside and can easily be pulled out.
The company’s first product is designed for use in opening blocked blood vessels in limbs, where there is currently no competition from the filter method, so that there is no need for comparative trials.