Patent ID: 9713476
Date: 2017-07-25
CPC Classifications: A61B,A61M,B29C,B29K,B29L,B32B,Y10T

Claim:
1. A multi-layer film heat welded medical balloon device comprising a multiplicity of layers of thermoplastic film including at least two thermoplastic film layers heat welded at peripheral edges to form a compartment adapted to receive fluid to expand said film layers relative to each other, and heat welded at one or more locations inside an area enclosed by the heat welded peripheral edges so as to enable the balloon device to articulate to a desired shape upon inflation, with a third thermoplastic film layer of said multiplicity of layers arranged so that a distal portion of the balloon device will bulge upwardly to form said desired shape upon inflation, and at least one of the layers heat welded to another of said layers, intermediate said peripheral edges, to form subcompartments in fluid communication with one another in said compartment that are configured to enable the device to articulate to said desired shape, wherein all layers are heat welded to one another at peripheral edges thereof, wherein all heat welded locations of said medical balloon device comprise heat weld regions on the thermoplastic film layers joining the thermoplastic film layers at said locations to one another.