Opinion ID: 4532063
Heading Depth: 3
Heading Rank: 1

Heading: Spenser

Text: Entitled “Implantable Prosthetic Valve,” WIPO International Publication No. WO 03/047468 A1 (“Spenser”) relates to “a valve prosthesis for cardiac implantation or for implantation in other body ducts.” J.A. 1589. Spenser discloses “a valve prosthesis device suitable for [percutaneous] Case: 18-2004 Document: 104-2 Page: 5 Filed: 04/27/2020 BOSTON SCIENTIFIC SCIMED, INC. v. IANCU 5 implantation in body ducts,” that includes “a support stent, comprised of a deployable construction” with “a valve assembly comprising a flexible conduit having an inlet end and an outlet, made of pliant material,” such as polyurethane (“PU”) and polyethylene terephthalate fabric (“PET”), “attached to the [stent’s] support beams providing collapsible slack portions of the conduit at the outlet.” J.A. 1591–92; see J.A. 1590 (defining “percutaneously” as “inserting the valve assembly on a delivery device similar to a catheter, then implanting the valve at the desired location via a large blood vessel such as the femoral artery”). Spenser teaches that “[t]o prevent leakage from the [valve] inlet[,] it is optionally possible to roll up some slack wall of the inlet over the edge of the frame so as to present [a] rolled-up sleeve-like portion,” that is, a fabric cuff, “at the inlet.” J.A. 1609; see J.A. 1613 (providing for use of “PU leaflets and PET tubular construction” for its valve).