This is a very clever product, anatomically well conceived and beautifully manufactured. I am sure it is a great boon to reflux sufferers who have normal anatomy. The cost appears high in the UK but this is a very small price to pay if it helps to avoid the disease spiral from eosophagitis to carcinoma via Barretts.
Unfortunately it has no relevance to patients who have experienced Ivor Lewis surgery and whose plumbing is radically different. Indeed it could be potentially dangerous in increasing the occurrence of acid/bile reflux and the risk of subsequent aspiration pneumonia.