Patent ID: 8376980

Claim:
A segmented ingrowth preventing indwelling catheter assembly, the ingrowth preventing indwelling catheter assembly having a distal end configured to be placed within a brain ventricle for drainage of cerebrospinal fluid, the ingrowth preventing indwelling catheter assembly comprising: a first segment of porous fiber membrane tubing having a porosity of less than 5 micrometers so as to be impermeable to tissue ingrowth and having a drainage or delivery fluid-flow rate appropriate for an intended application; a second segment including a non-porous tip having a proximal end attached to a first end of the first segment of porous fiber membrane tubing to form the distal end of the ingrowth preventing indwelling catheter assembly, the proximal end of said second segment terminating at said first end of said first segment; a third segment of non-porous and flexible tubing having a distal end attached to a second end of the first segment of porous fiber membrane tubing, the distal end of said third segment terminating at said second end of said first segment, wherein said second segment is overlapping with said first segment at said first end of said first segment and said third segment is overlapping with said first segment at said second end of said first segment; and a rigid tubular reinforcement member having a plurality of apertures therethrough disposed within the first segment of porous fiber membrane tubing, said tubular reinforcement member being attached between said second segment including said non-porous tip and said third segment of non-porous and flexible tubing.