Toray Industries, Inc.

Hiroaki Fujieda

Yoshiyuki Ueno

Kazumi Tanaka

Hirokazu Sakaguchi

Aishan Han

Tomoaki Osuka

Masayuki Yamada

An object of the present invention is to provide a purification column which is a small purification column in which a volume of a liquid to be treated is reduced in order to reduce the amount of blood to be taken out and which realizes a low pressure loss and has high adsorption performance. The present invention provides a fiber bundle including a plurality of porous fibers that satisfies the following requirements (A) to (E):

Fiber bundle, method for producing same, and purification column

A solid fiber is described, where the solid fiber is characterized by (a) a modification degree Do/Di, in a cross section of the solid fiber of 1.20 to 8.50 where the inscribed circle diameter is denoted by Di and the circumscribed circle diameter is denoted by Do; and (b) a porous specific surface area of not less than 30 m/g.

Porous fiber, adsorbent material, and purification column

The present invention provides: a porous fiber that exhibits both improved adsorption capacity, and suppressed exposure and detachment of particulates; an adsorption column filled with said porous fiber; and a blood purification system in which an adsorption column is connected to a water removal column. The porous fiber according to the present invention has a three-dimensional pore structure formed by a solid fiber, and satisfies all of the following conditions. (1) The porous fiber has particulates having a diameter of not more than 200 &#x3bc;m, and the percentage of area occupied by said particulates having a diameter of not more than 200 &#x3bc;m in a horizontal cross section of the three-dimensional pore structure is at least 3.0%. (2) The porous fiber does not contain said particulates having a diameter of not more than 200 &#x3bc;m in the region within 1.0 &#x3bc;m in the depth direction from the outermost surface.

Porous fiber and adsorption column

There are provided porous fibers having excellent removal performance with respect to a material to be purified; and a purification column into which an adsorbent material obtained by bundling the fibers is incorporated. The porous fibers satisfying the following conditions (a) and (b) and having a shape in which three or more projected parts are continuously present in the lengthwise direction on the periphery part of a solid-state fiber: (a) The modification degree Do/Di in a cross section is 1.2 to 6.6 when the diameter of the inscribed circle is denoted by Di and the diameter of the circumscribed circle is denoted by Do., and (b) The specific surface area of pores is 50 m/g or more.

Porous fibers, adsorbent material, and purification column

A blood purification column includes an adsorbent and a casing whose two ends are open ends, wherein the adsorbent is housed inside the casing, and wherein one of two casing ends is a blood inflow-side end portion and another is a blood outflow-side end portion, and wherein a filter is disposed at the blood inflow-side end portion and/or the blood outflow-side end portion of the casing, and wherein the filter satisfies (1)-(3):

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Otsu, Japan

Hiroaki Fujieda