“…From the late 1940s to the 1960s, dialyzers that featured plates, tubes, or capillaries, in addition to possessing enclosed dialysate compartments, began to be readily available. Examples of such dialyzers included the Skeggs‐Leonards dialyzer, the MacNeill type dialyzer (e.g., the MacNeill‐Collins dialyzer), and the Kiil dialyzer . Both the Skeggs‐Leonards and the Kiil dialyzers were plate devices while the MacNeill‐type devices possessed parallel straight cellophane tubes .…”