a bioprosthetic valve graft comprises a valve frame and valve flaps , the latter acting to open or close a valve aperture to directionally control fluid flow through the bioprosthesis . the bioprosthetic valve graft comprises method for suturelessly attaching a biomaterial suturelessly bonded to the a method for securing a biomaterial to a valve frame includes positioning a flexible valve frame defining an open area on a first major surface of a biomaterial sheet having a peripheral edge , wherein positioning serves to approximate the valve frame and the peripheral edge of the biomaterial sheet to form an at least first bonding locus ; and suturelessly bonding the biomaterial to the valve frame at the at least first bonding locus . the method avoids the disadvantages associated with conventional sutures and substantially reduces medical complications in implantations .