EXPANDED PTFE MEDICAL DEVICES WITH SPIRALED RIDGES AND PROCESS OF MANUFACTURE THEREOF

摘要

There is provided a unique process for the manufacture of a tubular PTFE or PTFE-tissue hybrid medical device is described having at least one luminal surface that is slightly ridged in a spiral configuration designed to rotate, or propagate the rotational flow of blood that is transitioning from an artery or vein into the implanted medical device. The process for the production of PTFE includes specially designed extrusion equipment depicted herein and/or specially designed tissue molding processes to be used in conjunction with the inventions of Pathak et al. and Edwin.