Patent ID: 6235303
Filing Date: 2001-05-22
Classification: A61F,A61J,A61K

Abstract:
Method of manufacturing a tubular capsule including fibre, the capsule having a wall delimiting internal compartments isolated from one another, the wall being made from a solution of at least one polymer, and at least one of the compartments containing a biologically active medium, the method comprising:coextruding the solution of at least one polymer and the biologically active medium by simultaneously injecting the polymer solution and the biologically active medium through a die of determined dimensions;interrupting the injection of the biologically active medium at determined points in time to form in the fibre successive compartments containing the biologically active medium and separated by a partition section made from the polymer solution; andcausing partial early solidification of the fibre as it leaves the die to a sufficient extent to prevent the fibre from breaking at the partition sections.