An implantable valve assembly having an extended operational lifespan, comprising: a drainage catheter having a proximal end and an opposite distal end; the drainage catheter comprising a single central lumen disposed proximate its proximal end having a single central passageway defined longitudinally therethrough; between the proximal and distal ends of the drainage catheter, the single central lumen transitions at an interface into a plurality of distinct branch lumen (120a, 120b) made of a shape memory material; each of the plural branch lumen having associated therewith a single branch passageway defined longitudinally therethrough; the single branch passageway of each of the plural branch lumen being in fluid communication with the single central passageway of the single central lumen; a dip coating of bioabsorbable material disposed at the distal end of the drainage catheter; at the time of implantation the dip coating securing the plural distinct branch lumen in direct physical contact with one another from the distal end of the drainage catheter to the interface with the central lumen; wherein each of the plural distinct branch lumen has an outer perimeter comprising at least one of a first outer surface section and a second outer surface section; together the first and second outer surface sections of a particular distinct branch lumen comprise its entire outer radial perimeter; while in a secured state with the plural distinct branch lumen held together by the dip coating: (i) the first outer surface section of each of the plural distinct branch lumen is in direct physical contact with the first outer surface section of at least one other branch lumen in a longitudinal direction from the interface to the distal end of the catheter; and (ii) the second outer surface section of each of the plural distinct branch lumen is not in physical contact with either the first or second outer surface sections of any other branch lumen; wherein each of the plural distinct branch lumen has a plurality of holes defined radially outward therethrough in the first and the second outer surface sections; while in the secured state with the plural distinct branch lumen held together by the dip coating a fluid is prohibited from passing through the plurality of holes defined in the first outer surface sections of any of the plural distinct branch lumen, the assembly further comprising at least one blocking member made of a bioabsorbable material masking the holes disposed at approximately the same axial distance from the distal end of the drainage catheter in the second outer surface sections of each of the plural distinct branch lumen prohibiting any fluid entering therein. a drainage catheter having a proximal end and an opposite distal end; the drainage catheter comprising a single central lumen disposed proximate its proximal end having a single central passageway defined longitudinally therethrough; between the proximal and distal ends of the drainage catheter, the single central lumen transitions at an interface into a plurality of distinct branch lumen (120a, 120b) made of a shape memory material; each of the plural branch lumen having associated therewith a single branch passageway defined longitudinally therethrough; the single branch passageway of each of the plural branch lumen being in fluid communication with the single central passageway of the single central lumen; a dip coating of bioabsorbable material disposed at the distal end of the drainage catheter; at the time of implantation the dip coating securing the plural distinct branch lumen in direct physical contact with one another from the distal end of the drainage catheter to the interface with the central lumen; wherein each of the plural distinct branch lumen has an outer perimeter comprising at least one of a first outer surface section and a second outer surface section; together the first and second outer surface sections of a particular distinct branch lumen comprise its entire outer radial perimeter; while in a secured state with the plural distinct branch lumen held together by the dip coating: (i) the first outer surface section of each of the plural distinct branch lumen is in direct physical contact with the first outer surface section of at least one other branch lumen in a longitudinal direction from the interface to the distal end of the catheter; and (ii) the second outer surface section of each of the plural distinct branch lumen is not in physical contact with either the first or second outer surface sections of any other branch lumen; wherein each of the plural distinct branch lumen has a plurality of holes defined radially outward therethrough in the first and the second outer surface sections; while in the secured state with the plural distinct branch lumen held together by the dip coating a fluid is prohibited from passing through the plurality of holes defined in the first outer surface sections of any of the plural distinct branch lumen, the assembly further comprising at least one blocking member made of a bioabsorbable material masking the holes disposed at approximately the same axial distance from the distal end of the drainage catheter in the second outer surface sections of each of the plural distinct branch lumen prohibiting any fluid entering therein.