This technique has been used in China for decades, and is currently being investigated in the United States. In this technique, three sets of inflatable cuffs are placed around the calves, thighs, and buttocks. These are inflated rhythmically in timing with the heart to augment flow. This has had a surprisingly good long-term benefit in the patients studied to date. This subject is about as emotional as any I've ever been associated with in medicine.
Chelation is a term describing compounds which bind molecules, typically metal ions, within it.
Some have narrow but well-defined uses in mainstream medicine. EDTA chelation has been advanced for years as a possible agent for reversing atherosclerosis. Time has educated many in the medical community, and shown that calcium in atherosclerotic plaques are not the major issue, and that removing it will leave the majority of the plaque and its active fat and cholesterol intact. More recently, claims of an anti-oxidant effect have been advanced. This likewise has multiple potential flaws in scientific theory, and minimal data.