SUNNYVALE, Calif.--(BUSINESS WIRE)--Nanostim, Inc., a privately-owned developer of miniaturized, leadless pacemakers, today announced the first successful implants of a leadless pacemaker in a series of 11 patients at Homolka Hospital in Prague, Czech Republic. The leadless pacemakers were implanted by Dr. Petr Neuzil, Head of Cardiology at Homolka Hospital, Prague, and Dr. Vivek Reddy, Director of Electrophysiology at Mount Sinai Hospital in New York. The patients were enrolled in the company’s LEADLESS Study, which is designed to examine the safety and effectiveness of the first totally self-contained, leadless pacemaker. The study is a prospective, single-arm, multicenter study that will be conducted in up to eight centers in Europe to gather data in support of CE Mark approval.