St. Jude Medical's quadripolar pacing system receives European CE Mark approval

St. Jude MedicalOct 21 2009

St. Jude Medical, Inc. (NYSE: STJ) today announced it has received European CE Mark approval for the industry’s first quadripolar pacing system for cardiac resynchronization therapy defibrillators (CRT-Ds). The quadripolar system offers physicians the ability to more effectively and efficiently manage the ever-changing pacing needs of patients with heart failure. It integrates multiple pacing options and features that enable physicians to better manage common pacing complications without having to surgically reposition the lead.

“Managing heart failure patients is often challenging and typically involves ongoing medical management,” said Dr. Klaus Gutleben, consultant cardiologist at the Heart and Diabetes Center North Rhine-Westphalia in Bad Oeynhausen, Germany. “This new quadripolar pacing system provides more options for managing the needs of my patients with heart failure and reduces the patient’s risk of needing multiple surgical procedures, which should lead to more efficient patient care.”

The quadripolar system, with the Quartet™ left ventricular pacing lead, features four pacing electrodes on the left ventricular lead – enabling up to 10 pacing configurations. Multiple pacing configurations provide physicians with more options to pace around scar tissue in the heart and avoid common pacing complications without the need to surgically reposition the lead.

Common pacing complications that can occur in patients implanted with a CRT system include high pacing thresholds and unintentional phrenic nerve or diaphragmatic stimulation. Patients with high pacing thresholds require significantly higher energy to pace the heart; this may reduce the device’s battery life or cause pacing to fail. Phrenic nerve and diaphragmatic stimulation occur when the electrical output from a device inadvertently activates the diaphragm muscle (either directly or via the phrenic nerve), causing hiccups upon each pacing stimulus. Both high pacing thresholds and phrenic nerve or diaphragmatic stimulation are often due to the location of the pacing lead electrode.

“The new features offered in this quadripolar system allow me to mitigate potential complications that would otherwise require an invasive procedure to re-place or reposition the left ventricular lead,” said Dr. Johannes Sperzel of the Kerckhoff Klinik in Bad Nauheim, Germany. “Moreover, the lead maintains excellent handling characteristics, as the additional electrodes do not impact my ability to place the lead in the targeted vein.”

In addition to multiple pacing options, the Quartet pacing lead features other St. Jude Medical technologies such as Optim™ insulation – a material that combines the biostability and flexibility of high-performance silicone rubber with the strength, tear resistance and abrasion resistance of polyurethane, to provide increased durability, flexibility and improved handling characteristics – and the “S-curve” design of the QuickFlex™ lead family, which increases stability.

“CRT has been demonstrated as an important treatment in reducing symptoms and slowing the progression of heart failure. This new system gives physicians more control over patient therapy by providing the flexibility to non-invasively adjust the pacing location or configuration,” said Eric S. Fain, M.D., president of the St. Jude Medical Cardiac Rhythm Management Division. “This approval of the industry’s first quadripolar pacing system is demonstrative of St. Jude Medical’s commitment to providing physicians with novel technology that addresses clinical needs.”