In addition, the stents can be lined, if desired, with materials such as polymers, for example polytetrafluoroethylene (PTFE), silicone or GORTEX, to provide for the ease of blood flow therethrough. [0055] A third embodiment of the stent design, illustrated in FIGS. 9-11, incorporates attachment flanges or ???legs??? 30 that expand after introduction into the myocardium to hold the stent 34 in pla