Apparatus and method for separating and concentrating fluids containing multiple components
First Claim
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1. A method of separating a fraction from a whole sample, comprising:
- placing an obtained volume of a whole heterogeneous material, including at least a first liquid portion and a solid portion, obtained substantially simultaneously while reaming a bone, in a container having at least a first section and a second section;
separating the solid portion from the first liquid portion at least by retaining at least a first portion of the solid portion of the obtained volume of a whole heterogeneous material in the first section of the container and allowing a separated portion of the first liquid portion to move to the second section;
forming a fraction of at least the separated portion of the first liquid portion including at least undifferentiated cells in the second section of the container; and
extracting the formed fraction from the second section of the container at least by allowing a first member to contact a second member;
wherein forming the fraction of the liquid including at least undifferentiated cells in the second section of the container includes;
positioning at least the container including the second section in a centrifuge device; and
centrifuging the container in the centrifuge device so that a buoy including the first member and the second member moves within the second section;
wherein extracting the formed fraction from the second section of the container includes accessing a volume between the first member of the buoy and the second member of the buoy through a passage in the first member of the buoy;
wherein during extraction a first surface of the first member is configured to mate with a second surface of the second member.
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Abstract
An apparatus that allows for separating and collecting a fraction of a sample. The apparatus, when used with a centrifuge, allows for the creation of at least three fractions in the apparatus. It also provides for a new method of extracting the buffy coat phase from a whole blood sample and mesenchymal stem cells from bone reaming material. A buoy system that may include a first buoy portion and a second buoy member operably interconnected may be used to form at least three fractions from a sample during a substantially single centrifugation process. Therefore, the separation of various fractions may be substantially quick and efficient.
561 Citations
5 Claims
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1. A method of separating a fraction from a whole sample, comprising:
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placing an obtained volume of a whole heterogeneous material, including at least a first liquid portion and a solid portion, obtained substantially simultaneously while reaming a bone, in a container having at least a first section and a second section; separating the solid portion from the first liquid portion at least by retaining at least a first portion of the solid portion of the obtained volume of a whole heterogeneous material in the first section of the container and allowing a separated portion of the first liquid portion to move to the second section; forming a fraction of at least the separated portion of the first liquid portion including at least undifferentiated cells in the second section of the container; and extracting the formed fraction from the second section of the container at least by allowing a first member to contact a second member; wherein forming the fraction of the liquid including at least undifferentiated cells in the second section of the container includes; positioning at least the container including the second section in a centrifuge device; and centrifuging the container in the centrifuge device so that a buoy including the first member and the second member moves within the second section; wherein extracting the formed fraction from the second section of the container includes accessing a volume between the first member of the buoy and the second member of the buoy through a passage in the first member of the buoy; wherein during extraction a first surface of the first member is configured to mate with a second surface of the second member. - View Dependent Claims (2, 3, 4, 5)
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Specification