Terumo Kabushiki Kaisha

Shigeyuki Kimura

Takemi Kobayashi

Yoshiki Takagi

Ryoji Kataoka

A blood component separation device for separating a plurality of blood components from blood sampled from a blood donor, and collecting platelets, includes: an operation unit that calculates a predicted platelet recovery rate from a hematocrit value of the blood and a platelet concentration of the blood, and calculates a recommended processing amount of the blood recommended for collecting a target number of units of platelets on the basis of the calculated predicted platelet recovery rate, wherein the operating unit sets the predicted platelet recovery rate calculated from any the hematocrit value and any the platelet concentration to be smaller by a predetermined value a when the blood donor is female than that when the blood donor is male.

Blood component separation device

A blood component separation device for separating a plurality of blood components from blood sampled from a blood donor, and collecting platelets, includes: an donor calculation unit that calculates a predicted platelet recovery rate from a hematocrit value of the blood and a platelet concentration of the blood, and calculates a recommended processing amount of the blood recommended for collecting a target number of units of platelets on the basis of the calculated predicted platelet recovery rate, wherein the operating unit sets the predicted platelet recovery rate calculated from any the hematocrit value and any the platelet concentration to be smaller by a predetermined value &#x3b1; when the blood donor is female than that when the blood donor is male.

The object of the invention is to provide a blood separation device that can reduce the total time for drawing blood to obtain high-concentration platelet liquid, thereby reducing the binding time of the blood donor. The device includes a temporary storage bag (Y) (also serves as a buffy coat bag) which is a whole blood bag for storing whole blood drawn from a blood donor. The controlling unit of the device controls the device to draw whole blood from the blood donor in parallel with at least either a circulation flow step or an acceleration step, thereby storing the drawn whole blood in the temporary storage bag (Y).

Set of containers for use on a blood component centrifugal separator

An object of the invention is to provide a blood component separation device that can keep the concentration of anticoagulant in a predetermined blood component to a constant level to minimize aggregation of a predetermined blood component (for example, aggregation of platelets). One aspect of the present invention is a blood component separation device that separates the predetermined blood component from the blood drawn from a blood donor while supplying to the blood an anticoagulant for preventing coagulation of the blood, where an anticoagulant ratio, or a ratio of an amount of the anticoagulant supplied in relation to the blood, is set according to a hematocrit value of the blood donor so that a concentration of the anticoagulant in the predetermined blood component becomes a predetermined value.

A blood component separation device includes a centrifuge bowl for separating a blood component from blood, a plasma bag for storing a plasma component, a platelet intermediate bag for storing high-concentration platelet liquid having high-concentration of platelets, and a temporary storage bag (also used as a buffy coat bag) for storing low-concentration platelet liquid having low-concentration of platelets. The blood component separation device performs control, from the second cycle onward, to mix the low-concentration platelet liquid stored in the temporary storage bag in the immediately preceding cycle with whole blood to supply the mixed liquid to the centrifuge bowl. An amount of high-concentration platelet liquid to be collected in the platelet intermediate bag in the first cycle is set to be smallest among all cycles, and an amount of high-concentration platelet liquid to be collected in a last cycle is set to be greatest among all the cycles.

Provided is a blood component separation device that can shorten the overall time to collect high-concentration platelet liquid for blood component donation, thereby reducing time to keep a donor for blood drawing. The blood component separation device includes a temporary storage bag (also used as a buffy coat bag) which is also used as a whole blood bag for storing whole blood drawn from the donor. A control means performs whole blood drawing from the donor in parallel with performing at least either of a circulation flow step and an acceleration step, thereby storing the collected whole blood in the temporary storage bag.

Method and apparatus for separating blood components including re-processing a low-concentration blood component

Method for controlling a blood component separation device including temporarily storing a component in a container

An object is to provide a blood component collection system capable of collecting a desired blood component of high quality. A blood component collection systemcomprises a centrifugal separatorcentrifuging blood into a plurality of components, first linefor feeding the blood to the centrifugal separator, a second linefor releasing the blood component from the centrifugal separator, a temporary reservoir bag' for temporarily reserving the platelet concentrate, a leukoreduction filterfor separating and reducing leukocyte from the platelet concentrate, and a platelet collection bagfor reserving the platelet concentrate having passed through the leukoreduction filter. The blood component collection systemis constructed to feed the platelet concentrate in the temporary reservoir bag&#x2032; to the platelet collection bagthrough the leukoreduction filter, and then, feed plasma and collect the platelet remaining in the leukoreduction filter(platelet concentrate from which leukocyte have been reduced) together with the plasma into the platelet collection bag

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Shizuoka, Japan

Shigeyuki Kimura