Boston Scientific Recalls Cryoablation Catheters
Boston Scientific has recalled (Class 1 — use instructions update) its POLARx and POLARx FIT Cryoablation Balloon Catheters because of atrio-esophageal fistula (AE fistula) risks. AE fistula is a known and inherent risk for patients undergoing catheter ablation for atrial fibrillation, according to the company. “Although uncommon, esophageal injury is a potentially life-threatening complication due to proximity of the esophagus to the posterior left atrium,” it says.
Since launching the devices in 2020, Boston Scientific says it has received seven such reports (worldwide) following atrial fibrillation ablations; four of them associated with a patient death.
“Detailed investigation of the available data associated with these AE fistula events did not identify product performance-related issues with any component of the cryoablation system,” the company says. “However, frequency and intensity of cryoablation applications were observed as possible contributing factors. Therefore, Boston Scientific is updating the POLARx and POLARx FIT cryoablation balloon catheter IFUs [instructions for use] to emphasize the risk of AE fistula, as well as practices that may reduce this risk.”