Catheter assemblies for controlled movement of fluid

A catheter assembly for infusion or aspiration of an internal body site, the catheter assembly comprising:

• a first catheter comprised of a tubular sidewall having an exterior surface extending between a proximal end and an opposing distal end, the sidewall bounding a lumen, at least one port being formed on the first catheter so as to provide fluid communication between the lumen and the exterior of the first catheter;
• and
• at least one filament outwardly extending through the at least one port or outwardly extending through the sidewall of the first catheter at a distance of 10 mm or less from the at least one port, the filament being attached to the first catheter.

A catheter assembly for infusion or aspiration of an internal body site, the catheter assembly comprising:

• a first catheter comprised of a tubular sidewall having an exterior surface extending between a proximal end and an opposing distal end, the sidewall bounding a lumen, a plurality of longitudinally spaced apart ports being formed on the first catheter so as to provide fluid communication between the lumen and the exterior surface of the sidewall;
• and
• a plurality of filaments, each filament from the plurality of filaments outwardly projecting from or adjacent to a corresponding one of each port of the plurality of ports.

A catheter assembly for infusion or aspiration of an internal body site, the catheter assembly comprising:

• a first catheter comprised of a tubular sidewall having an exterior surface extending between a proximal end and an opposing distal end, the sidewall bounding a lumen, at least one port being formed on the sidewall so as to provide fluid communication between the lumen and the exterior of the sidewall;
• and
• at least one filament integrally formed on the exterior surface of the first catheter, at least a portion of the at least one filament outwardly projecting from the first catheter at a distance of 10 mm or less from the at least one port.