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First patient enrolled in REPRISE II trial to evaluate the safety and performance of the Lotus Valve System


Thursday, 11 Oct 2012 11:23

On 10 October 2012, Boston Scientific announced it has enrolled the first patient in the REPRISE II clinical trial to evaluate the safety and performance of the Lotus Valve System in up to 120 patients with severe aortic valve disease.

This international, multicentre study includes 15 sites in Australia, France, Germany and the UK. According to Boston Scientific, the Lotus Valve System is the first transcatheter aortic valve implantation (TAVI) device of its kind that is designed to minimise aortic regurgitation. The device is both fully repositionable and retrievable prior to release, offering predictable and precise placement. The results of the REPRISE II trial are expected to be used to support CE mark and other international regulatory approvals.

“We were encouraged by the promising results of the REPRISE I clinical trial completed earlier this year and we are therefore very confident about evaluating the safety and performance of the Lotus Valve in a larger patient cohort,” said Ian Meredith, director of Monash Heart, at Monash Medical Centre in Melbourne, Australia, and the principal investigator of the REPRISE II trial. “The Lotus Valve has a number of important features which address some of the limitations observed with the first generation devices. The ease of use, predictable and precise positioning, and the ability to fully reposition and retrieve the Lotus Valve offer the operator considerable reassurance and control. These features, along with the minimised risk of paravalvular leakage, may lead to improved clinical outcomes.”

The Lotus Valve System is a differentiated second-generation TAVI technology, which consists of a pre-loaded, stent-mounted tissue valve prosthesis and catheter delivery system used for guidance and percutaneous placement of the valve. The low-profile delivery system and introducer sheath are designed to enable predictable and precise placement, as well as bidirectional atraumatic repositioning and retrieval at any time prior to release of the aortic valve implant. The device also employs a unique Adaptive Seal feature designed to minimise the incidence of paravalvular regurgitation, which has proven to be a predictor of mortality.

Current study enrolment requires that patients have severe calcified aortic stenosis, are aged 70 years or older and are considered to be at high surgical risk, defined as an STS (Society of Thoracic Surgeons) mortality score >8 or the consensus opinion of the Heart Team. The REPRISE II study is designed to study two valve sizes, 23mm and 27mm, and have a five-year follow-up. Beyond that, it will assess for other endpoints recommended by the Valve Academic Research Consortium (VARC) and regulatory agencies. Study enrolment is expected to be completed in the first half of 2013.

“There is a high need for continued evolution of device technology to treat people with severe aortic valve disease,” said Keith D Dawkins, global chief medical officer for Boston Scientific. “We are looking forward to advancing the Boston Scientific valve program with REPRISE II, as we believe the Lotus Valve System is a unique technology that will offer interventional cardiologists greater precision and control in deployment which, in effect, may simplify the implantation procedure and lead to improved patient outcomes.”

The Lotus Valve System is an investigational device, limited by applicable law to investigational use and not available for sale. The device was developed by Sadra Medical, which Boston Scientific acquired in 2011.




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