REINFORCED MULTI-LAYERED MEMBRANE

摘要

A multi-layered membrane may include a first layer made by polytetrafluoroethylene polymer (PTFE), a second layer made by fluorinated ethylene propylene polymer (FEP), a third layer made by a reinforcing unit, and a fourth layer made by PTFE. The second and third layers are sandwiched between the first and the fourth layers, and the reinforcing unit is configured to span a bone cavity and used for fixation to bone surrounding the bone cavity. The reinforcing unit is configured to form a desired shape prior to placement on the bone defect and maintain the formed shape upon placement. In one embodiment, the reinforcing unit has multiple elongated members forming a junction or junctions, and the elongated members have a free distal end that extends away from the junction; and at least one elongated member has an enlarged appendage formed in the free distal end spaced apart from the junction.

主权项

1. A multi-layered membrane, comprising a first layer made by polytetrafluoroethylene polymer (PTFE), a second layer made by fluorinated ethylene propylene polymer (FEP), a third layer made by a reinforcing unit, and a fourth layer made by polytetrafluoroethylene polymer (PTFE), wherein the second and third layers are sandwiched between the first layer and the fourth layer, and the reinforcing unit is configured to span a bone cavity and used for fixation to bone surrounding the bone cavity, wherein the reinforcing unit is configured to form a desired shape prior to placement on the bone defect and maintain the formed shape upon placement.