Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
A leukocyte-removing filter device comprising: (a) a flat casing comprising opposite flat main walls fluid-tightly connected by a side wall structure to define an internal space of said casing, said casing having a top and a bottom portion which are spaced apart vertically of said casing, said top portion having an inlet for blood and an outlet for leukocyte-removed blood, and (b) a filter medium comprising at least one filter material sheet extending in said internal space of the casing along said flat main walls to partition said internal space into an inlet-side chamber communicated with said inlet and an outlet-side chamber communicated with said outlet.
Claim 2
Dependent Claim
76 words
The filter device according to claim 1, wherein the casing has a central axis vertically extending from said top portion to said bottom portion, and the inlet opens in a direction along a first line and the outlet opens in a direction along a second line, the first and second lines each forming an angle with the central axis and each angle being independently not more than 90° inclusive of 0° relative to the central axis.
Claim 3
Dependent Claim
28 words
The filter device according to claim 2, wherein each of said inlet and said outlet opens in a direction substantially parallel to the central axis of the casing.
Claim 4
Dependent Claim
47 words
The filter device according to claim 2 , wherein said inlet and said outlet are positioned in a symmetrical relationship with respect to a plane containing the central axis of the casing and extending in parallel to the main wall on the side of said outlet-side chamber.
Claim 5
Dependent Claim
77 words
The filter device according to claim 1, wherein the overall outer surface of said casing is substantially free of convexo-concave portions and sharp projections, rendering smooth said overall outer surface, and wherein said casing has an inner volume of from 1 ml to 150 ml and has the following outer dimensional characteristics: a width of not more than 15 cm, a height of not more than 25 cm and a thickness of not more than 2 cm.
Claim 6
Dependent Claim
61 words
The filter device according to claim 1, wherein said outlet-side chamber does not discontinuously vary in horizontal cross-sectional area more than 10 % over all of the inner space of the outlet-side chamber from its inner bottom portion to its inner uppermost portion and wherein the inner uppermost portion of said outlet-side chamber decreases in horizontal cross-sectional area toward said outlet.
Claim 7
Dependent Claim
175 words
A leukocyte-removing system comprising: a leukocyte-removing filter device comprising: (a) a flat casing comprising opposite flat main walls fluid-tightly connected by a side wall structure to define an internal space of said casing, said casing having a top and a bottom portion which are spaced apart vertically of said casing, said top portion having an inlet for blood and an outlet for leukocyte-removed blood, and (b) a filter medium comprising at least one filter material sheet extending in said internal space of the casing along said flat main walls to partition said internal space into an inlet-side chamber communicated with said inlet and an outlet-side chamber communicated with said outlet, inlet connecting means fluid-tightly connected to the inlet for aseptically connecting a part preceding the leukocyte-removing filter device to said inlet, at least one satellite bag, and outlet connecting means for fluid-tightly directly connecting said outlet of the leukocyte-removing filter device to said at least one satellite bag, said outlet connecting means comprising a tube, wherein said leukocyte-removing system is entirely in an aseptic state.
Claim 8
Dependent Claim
37 words
The system according to claim 7, further having an anticoagulant-containing blood collection bag fluid-tightly connected to said inlet connecting means, and wherein said at least one satellite bag includes a plurality of satellite bags connected in series.
Claim 9
Dependent Claim
35 words
The system according to claim 7, further having an anticoagulant-containing blood collection bag fluid-tightly connected to said inlet connecting means and having at least one satellite bag fluid-tightly, aseptically connected to said blood collection bag.