JP2001170165A5 - - Google Patents

Claims (8)

A centrifuge having a rotor having a blood storage space therein, an inlet and an outlet communicating with the blood storage space, and centrifuging the blood introduced from the inlet by rotation of the rotor in the blood storage space. A first line for connecting a blood collection needle or a blood collection device connection portion to an inlet of the centrifuge; a second line connected to the outlet of the centrifuge; Plasma collection having a third line for anticoagulant injection connected to the first line, a first tube connected in the middle of the first line, and a second tube connected to the second line A blood component collection device comprising a blood component collection circuit comprising a bag and a platelet collection bag connected to the second line,
The blood component collection device according to claim 1, wherein the blood component collection device includes a control unit having a function of changing a centrifugal rotation speed of a rotor of the centrifugal separator according to a blood flow speed at the time of blood collection by a donor. 2. The blood according to claim 1, wherein the control unit has a function of changing a centrifugal rotation speed of a rotor of the centrifuge according to a blood component concentration of the donor and a blood flow speed at the time of blood collection of the donor. 3. Component sampling device. The blood component collection device according to claim 2, wherein the blood component concentration of the donor is a hematocrit value. The blood component collection device, a centrifugal separator driving device for rotating the rotor of the centrifuge, is disposed on the centrifugal separator side from the connection of the first line and the first tube, A first liquid supply pump for a first line, a second liquid supply pump for the third line, and a plurality of flow paths for opening and closing the flow path of the blood component collection circuit And a control unit for controlling the centrifugal separator driving device, the first liquid feed pump, the second liquid feed pump, and the plurality of flow path opening / closing means,
Further, the control unit is configured to collect the blood to which the anticoagulant is added, to separate the collected blood and to collect the separated plasma in the plasma collection bag, and to collect the plasma by the plasma collection step. A plasma circulation step of circulating the plasma in the plasma collection bag through the centrifuge, and at least one plasma collection / circulation step; and after the plasma collection / circulation step, the first liquid feeding pump The platelet collection step of accelerating the plasma circulation speed of the platelet to allow the platelets to flow out of the centrifuge and collect the platelets in the platelet collection bag. The centrifugal separator driving device, the first liquid feeding pump, and the second Claims 1 is pump and controls the plurality of flow path shutter means blood component collection apparatus according to any one of 3. The blood component collection device includes a centrifugal separator driving device for rotating the rotor of the centrifuge, the control unit uses a minimum rotor rotation speed storage function, and the blood component concentration of the donor, and A rotor rotation speed calculation function for calculating a rotor rotation speed in consideration of a blood flow speed at the time of blood collection of the blood donor, wherein the rotor rotation speed calculated by the rotor rotation speed calculation function is larger than the minimum rotor rotation speed. In such a case, the centrifugal separator driving device is controlled to rotate the rotor at the calculated rotor speed, and when the calculated rotor speed is smaller than the minimum rotor speed, The blood component collecting apparatus according to any one of claims 1 to 4, further comprising a function of controlling the centrifugal separator driving device to rotate the rotor. The blood component collection device includes a centrifuge drive device for rotating the rotor of the centrifuge, and a hematocrit value input unit or a hematocrit value measurement function, and the control unit calculates a rotor rotation speed. A number calculation function, a blood flow velocity calculation function at the time of blood collection of the blood donor, and a minimum rotor speed storage function, and when the blood flow velocity calculated by the blood flow velocity calculation function is larger than a certain value, The rotor rotation speed calculation function calculates the rotor rotation speed suitable for the hematocrit value using the input or measured hematocrit value, and the blood flow speed calculated by the blood flow speed calculation function is equal to or less than a certain value. In this case, the rotor rotation speed calculation function is a rotor suitable for the hematocrit value calculated using the input or measured hematocrit value. -Calculating a rotation speed lower than the rotation speed by a predetermined value, and if the rotor rotation speed calculated by the rotor rotation speed calculation function is larger than the minimum rotor rotation speed, the rotor speed is calculated by the calculated rotor rotation speed. Control the centrifuge drive to rotate the, if the calculated rotor speed is smaller than the minimum rotor speed, the centrifuge drive device to rotate the rotor at the minimum rotor speed The blood component collection device according to any one of claims 1 to 4, further comprising a function of controlling blood pressure. The hematocrit value measurement function is a hematocrit value measurement sensor provided at a position on the blood collection needle side from a connection with the third line for injecting an anticoagulant, which is the first line. 7. The blood component collection device according to 6. The blood component collection device according to claim 6, wherein the hematocrit value measurement function is a hematocrit value measurement function using a centrifugal separator during an initial plasma collection step.