Systems and methods for making a laminar ventricular partitioning device

A method of securing a polymeric sheet to rib components of a frame structure, wherein the rib components are jointed at a hub to form an expandable and collapsible implant, the method comprising the steps of:

• decreasing a diameter of the frame structure;
• placing the frame structure into an assembly fixture, wherein the assembly fixture is configured to hold the frame structure in a loaded configuration with a decreased diameter;
• placing a polymeric sheet into the assembly fixture;
• and
• heating the assembly under pressure to fuse the sheet to the frame structure.

An assembly fixture for securing a polymeric sheet to rib components of a frame structure, wherein the rib components are jointed at a hub to form an expandable and collapsible implant, the fixture comprising:

• a first platen having male shaping portion and a rim portion positioned around the periphery of the first platen;
• and
• a second platen having female shaping portion and a rim portion positioned around the periphery of the second platen;
• wherein the male and female shaping portions are configured to hold the rib components of the frame structure in a loaded configuration with a decreased diameter.