Abstract: Multi-component separation devices configured to separate components of a liquid sample by centrifugation are provided. Aspects of the separation devices include a container having a distal end and a proximal end and a buoy configured to be displaced along a longitudinal axis within the container where the buoy includes one or more sealed chambers. Also provided are methods of using the subject devices to separate components of a multi-component liquid sample such as whole blood, bone marrow aspirate or stromal vascular fraction as well as systems suitable for practicing the subject methods.

Abstract: Multi-component separation devices configured to separate components of a liquid sample by centrifugation are provided. Aspects of the separation devices include a container having a distal end and a proximal end and a buoy configured to be displaced along a longitudinal axis within the container where the buoy includes one or more sealed chambers. Also provided are methods of using the subject devices to separate components of a multi-component liquid sample such as whole blood, bone marrow aspirate or stromal vascular fraction as well as systems suitable for practicing the subject methods.

Abstract: Multi-component separation devices configured to separate components of a liquid sample by centrifugation are provided. Aspects of the separation devices include a container having a distal end and a proximal end and a buoy configured to be displaced along a longitudinal axis within the container where the buoy includes one or more sealed chambers. Also provided are methods of using the subject devices to separate components of a multi-component liquid sample such as whole blood, bone marrow aspirate or stromal vascular fraction as well as systems suitable for practicing the subject methods.

Abstract: Methods of preparing liquid exchanged biological fractions are provided. Aspects of the present disclosure according to certain embodiments include introducing a biological sample into a centrifugation container having a buoy, subjecting the biological sample to a force of centrifugation to produce two or more fractions in the biological sample, collecting a first fraction of the biological sample from the container and introducing a liquid exchange fluid into the container to produce a liquid exchanged fraction that is a mixture of the liquid exchange fluid and a second fraction of the biological sample. Compositions having a liquid exchanged platelet-rich fluid and kits for practicing embodiments of the subject methods are also provided. Methods for applying compositions having a liquid exchanged platelet-rich fluid to a body site of the subject are described.

Abstract: Multi-component separation devices configured to separate components of a liquid sample by centrifugation are provided. Aspects of the separation devices include a container having a distal end and a proximal end and a buoy configured to be displaced along a longitudinal axis within the container where the buoy includes one or more sealed chambers. Also provided are methods of using the subject devices to separate components of a multi-component liquid sample such as whole blood, bone marrow aspirate or stromal vascular fraction as well as systems suitable for practicing the subject methods.

Abstract: The centrifugation vessel includes an outer wall containing an interior space. A dam defines a barrier which divides the interior space into at least two regions including a catch basin defining a higher gee region and a reservoir defining a lower gee region. These regions are joined together over the dam. The dam includes a face which is preferably tapered to enable optimization of speed of separation of a sample placed within the vessel. The vessel is usable in a biological sample processing method by having the higher gee region of the vessel configured to have an elongate form and the volume optimized for collection of a higher density fraction of the sample. Supply and withdrawal tubes extend into the regions for reliable extraction and separate collection of differing density fractions after separation by centrifugation.

Abstract: Aspects of the present disclosure include methods for preparing biocomposites having viable stem cells and platelets. Methods according to certain embodiments include combining a composition that contains viable stem cells with a composition the contains platelets in a centrifugation vessel, subjecting the centrifugation vessel to a force of centrifugation to produce two or more fractions such that each fraction includes a component having different density and collecting a fraction from the centrifuge vessel that includes the platelets and viable stem cells. Liquid biocomposites having viable stem cells and platelets and methods for administering the biocomposites to a body site of a subject are also provided.

Abstract: The centrifugation vessel includes an outer wall containing an interior space. A dam defines a barrier which divides the interior space into at least two regions including a catch basin defining a higher gee region and a reservoir defining a lower gee region. These regions are joined together over the dam. The dam includes a face which is preferably tapered to enable optimization of speed of separation of a sample placed within the vessel. The vessel is usable in a biological sample processing method by having the higher gee region of the vessel configured to have an elongate form and the volume optimized for collection of a higher density fraction of the sample. Supply and withdrawal tubes extend into the regions for reliable extraction and separate collection of differing density fractions after separation by centrifugation.