Patent ID: 9028688
Filing Date: 2015-05-12
Classification: B01L,G01N

Abstract:
1. An instrument for separating blood into blood cells and plasma or serum and analyzing components in the plasma or the serum comprising: a blood-sampling container having an opening at least at one end and a closing member having a large diameter portion, a small diameter portion and a stepped surface between the large diameter portion and the small diameter portion and press-fitted into the opening for collecting blood therein, a first hollow needle extending toward one end of the instrument; a second hollow needle extending toward the other end of the instrument, which is the opposite side from the one end; a tubular container body arranged between the first and second hollow needles and having an inner space so as to allow passage of blood; and a blood separation material arranged in the inner space of the container body to separate blood into blood cells and plasma or serum, wherein the blood separation material has an average hole diameter of from 2 μm to 8 μm; wherein the container body includes a first channel which allows blood to flow from a needlepoint of the first hollow needle toward the inner space of the container body and flow into the inner space of the container body, a second channel which allows the blood to flow from the inner space toward a needlepoint of the second hollow needle and flow out from the inner space, and a third channel which adjoins and extends downward from the needlepoint of the first hollow needle and an end of the third channel redirected sideways reaches an opening of a side surface of the container body allowing outside air to enter the third channel and flow toward the needlepoint of the first hollow needle to prevent pressure lowering in the blood sampling container when the first hollow needle is attached to the blood sampling container, and wherein the third channel is formed within the container body; and wherein the instrument for separating blood comprises a cylindrical first holder extending from said container body toward one end of the container body and the first holder includes a first engaging portion projecting from an inner peripheral surface of the first holder, which can be opposite to the stepped surface so that the stepped surface is engaged by the first engaging portion when the closing member is pierced through by the first hollow needle, and wherein the first holder includes a second engaging portion projecting from the inner peripheral surface of the first holder so that the closing member of the blood-sampling container is engaged thereby at a position before the closing member is pierced through by the first hollow needle.