Bayesian approach for design and analysis of medical device trials in the era of modern clinical studies

Medical device technology develops rapidly,and the life cycle of a medical device is much shorter than drugs.It is necessary to evaluate the safety and effectiveness ofamedical device in a timelymanner to keep upwith technology flux.Bayesian methods provides an efficient approach to addressing this challenge.In this article,we review the characteristics of the Bayesian approach and some Bayesian designs that were commonly used in medical device regulatory setting,including Bayesian adaptive design,Bayesian diagnostic design,Bayesian multiregional design,and Bayesian label expansion study.We illustrate these designs with medical devices approved by the US Food and Drug Administration(FDA).We also review several innovative Bayesian information borrowing methods,and briefly discuss the challenges and future directions of the Bayesian application in medical device trials.Our objective is to promote the use of the Bayesian approach to accelerate the development of innovative medical devices and their accessibility to patients for effective disease diagnoses and treatments.