Patent ID: 6013184
Filing Date: 2000-01-11
Classification: A61K,A61M,Y10T

Abstract:
A device for preparing leukocyte-depleted products from leukocyte-containing fluid, comprising at least an inlet port, a leukocyte removal filter, an outlet port, a first conduit which connects the inlet port and the leukocyte removal filter and a second conduit which connects the leukocyte removal filter and the outlet port said leukocyte removal filter having a permeability resistance of 20 to 4,900 Pa (2 to 500 mm H.sub.2 O) and a distance from the inlet port to the outlet port of approximately 0.5 to 3.0 meters, wherein1) a flow opening portion comprising a cylindrical hollow tube for controlling flow rate having an opening cross section narrower than that of the second conduit and having a fixed, over time, length is provided in the second conduit;2) said cylindrical hollow tube has a fixed, over time, effective cross section in the range of 0.1 to 5.0 mm.sup.2 over its length, a ratio of length to effective cross section in the range of 10 to 400 mm/mm.sup.2, and a fixed length of 10 to 200 mm; and3) a flow rate can be adjusted to 20-50 ml/min.