PRESSURE LAMINATION METHOD FOR FORMING COMPOSITE EPTFE/TEXTILE AND EPTFE/STENT/TEXTILE PROSTHESES

摘要

A method of forming a composite textile and ePTFE implantable device includes the steps of providing an ePTFE layer; providing a textile layer; applying a coating of an elastomeric bonding agent to one of the surfaces of the ePTFE layer or the textile layer; providing a hollow member having an open end and an opposed closed end defining a fluid passageway therebetween and having a wall portion with at least one hole extending therethrough, the hole being in fluid communication with the fluid passageway; concentrically placing the ePTFE layer and the textile layer onto the hollow member and over the at least one hole of the hollow member, thereby defining a composite assembly; placing the hollow member with the composite assembly within a pressure chamber; applying a pressure differential so that the pressure within the chamber is greater than a pressure within the fluid passageway of the hollow member; and applying heat to the bonding agent to adhesively bond the textile layer and the ePTFE layer to provide a laminated composite assembly.