A method for collecting plasma includes determining the weight and hematocrit of a donor, and inserting a venous-access device into the donor. The method then withdraws blood from the donor through a draw line connected to a blood component separation device, and introduces anticoagulant into the withdrawn blood. The blood component separation device separates the blood into a plasma component and a second blood component, and the plasma component is collected from the blood component separation device and into a plasma collection container. The method may then calculate (1) a percentage of anticoagulant in the collected plasma component, and (2) a volume of pure plasma collected within the plasma collection container. The volume of pure plasma may be based, at least in part, on the calculated percentage of anticoagulant. The method may continue until a target volume of pure plasma is collected within the plasma collection container.

Methods and systems for transfusing reduced-volume blood components are disclosed. Previously collected blood components are introduced into a fluid circuit associated with an apparatus that further separates the component into a reduced volume component and supernatant. The reduced-volume blood component is transfused to the patient in need of the component without the risk of circulatory overload.

Apparatuses and methods of using them to collect blood, are provided, by first ensuring that the patient's skin is properly cleaned, to prevent contamination of the collected blood. One feature is a blood collection device configured to collect blood from a patient. Another feature is a scrub timer integrated into the device and configured to indicate to a user a scrub time period prior to beginning a blood draw process. The scrub timer can be configured to audibly and/or visually indicate to a user the start and stop times of a scrub cleaning process. In one embodiment, the scrub timer can be restarted, either manually or automatically, if the scrub cleaning process is not followed properly.

The invention relates to a blood line (108) comprising an infusion site (145) intended to inject into the line a solution, comprising: a first main channel (200) having a first passage section, a second main channel (220) having a second passage section, means for the formation (210) of a turbulence area located downstream from the first main channel, located upstream from the second main channel, these formation means comprising a first fluid passage means (224) defining a reduction (225) in the passage section and whose smallest passage section is smaller than the first passage section and smaller than the second fluid passage section, a secondary channel (230) comprising an inlet (231) for letting in the solution and an outlet (232) in fluid communication with the first main channel or the means for the formation of a turbulence area or the second main channel.

A system and method are provided for separating previously-collected whole blood into a red blood cell fraction and a plasma fraction by which the container of previously-collected whole blood is determined to be empty based on using the combination of the measured gross weight of the container and a calculated fluid flow rate from the container, based on weigh scale feedback. Upon detection of the empty container, flow from the container is stopped.

Described are embodiments that include methods and devices for separating components from multi-component fluids. Embodiments may involve use of separation vessels and movement of components into and out of separation vessels through ports. Embodiments may involve the separation of plasma from whole blood. Also described are embodiments that include methods and devices for positioning portions, e.g., loops, of disposables in medical devices. Embodiments may involve use of surfaces for automatically guiding loops to position them into a predetermined position.

Apparatuses and methods of using them to collect blood, are provided, by first ensuring that the patient's skin is properly cleaned, to prevent contamination of the collected blood. One feature is a blood collection device configured to collect blood from a patient. Another feature is a scrub timer integrated into the device and configured to indicate to a user a scrub time period prior to beginning a blood draw process. The scrub timer can be configured to audibly and/or visually indicate to a user the start and stop times of a scrub cleaning process. In one embodiment, the scrub timer can be restarted, either manually or automatically, if the scrub cleaning process is not followed properly.

The inventive apparatus is a device for collecting a target volume of blood in a collecting bag connected to a collection needle with a flexible tube. The device has a plate for the collecting bag and a clamping device for clamping the flexible tube. The device also has a bearing element having a bearing surface, and a clamping element with a clamping surface. The clamping element is able to move between an open position in which the flexible tube positioned between the bearing and clamping surfaces is not deformed and a closed position in which the flexible tube positioned between the bearing and clamping surfaces is closed off. The device also has a control unit configured to determine the volume of blood collected and move the clamping element from the open position to an intermediate position, when the determined volume of blood collected reaches a predetermined volume.

The present disclosure relates to a blood line (108) comprising an infusion site (145) intended to inject into the line a solution comprising: —a first main channel (200) having a first passage section, —a second main channel (220) having a second passage section, —means for the formation (210) of a turbulence area located downstream from the first main channel, located upstream from the second main channel, these formation means comprising a first fluid passage means (224) defining a reduction (225) in the passage section and whose smallest passage section is smaller than the first passage section and smaller than the second fluid passage section, —a secondary channel (230) comprising an inlet (231) for letting in the solution and an outlet (232) in fluid communication with the first main channel or the means for the formation of a turbulence area or the second main channel.

A method for collecting plasma includes determining the weight and hematocrit of a donor, and inserting a venous-access device into the donor. The method then withdraws blood from the donor through a draw line connected to a blood component separation device, and introduces anticoagulant into the withdrawn blood. The blood component separation device separates the blood into a plasma component and a second blood component, and the plasma component is collected from the blood component separation device and into a plasma collection container. The method may then calculate (1) a percentage of anticoagulant in the collected plasma component, and (2) a volume of pure plasma collected within the plasma collection container. The volume of pure plasma may be based, at least in part, on the calculated percentage of anticoagulant. The method may continue until a target volume of pure plasma is collected within the plasma collection container.