Patent ID: 7887661
Filing Date: 2011-02-15
Classification: A61M

Abstract:
1. A method comprising: winding a plurality of layers of ePTFE onto a large mandrel; bonding a seam between two of a plurality of second ePTFE windings; fusing together the layers of ePTFE; heating the layers of ePTFE at a temperature of approximately 380 degrees celsius for a duration of between 20 minutes and 30 minutes; stretching the fused layers of ePTFE onto a small mandrel, wherein stretching comprises: putting the small mandrel within an inner diameter of fused ePTFE layers; stretching apart a distal end and a proximate end of the ePTFE sufficiently to stretch the inner diameter of fused ePTFE layers onto an outer diameter of the small mandrel; compacting the stretched fused layers of ePTFE axially; one of wrapping an outer diameter of the stretched fused layers of ePTFE with a polytetrafluoroethylene, and constraining the outer diameter of the stretched fused layers of ePTFE within a steel tube before compacting, and then sufficiently compacting axially inwards a distal end and a proximate end of the stretched fused layers of ePTFE, such that during inflation of the lined ePTFE balloon, the compacted stretched fused layers of ePTFE may not expand axially bonding a balloon liner to the compacted stretched fused layers of ePTFE to form a lined ePTFE balloon.