Abstract: Apparatus and methods for separating blood components are disclosed in which an apparatus for separating blood generally includes a tube defining a channel and configured for receiving a quantity of blood and a float contained within the tube and having a density which is predefined so that the float is maintained at equilibrium between a first layer formed from a first fractional component of the blood and a second layer formed from a second fractional component of the blood. Upon completion of the centrifugation, the first layer may be removed from the tube while the float isolates the second layer from the first layer.

Abstract: In some forms, the present disclosure provides systems and methods for isolation of platelet rich plasma from a liquid tissue sample. In accordance with some forms of the disclosed systems and methods, provide rapid separation of blood components with the need for centrifugation. Accordingly, in one embodiment, the present disclosure provides a method for isolating platelet rich plasma, the method comprising combining a liquid tissue sample with a polymer composition, the polymer composition comprising polyethylene glycol.

Abstract: Disclosed is a device for separating a cellular component from a multicomponent fluid. The device can comprise a body, a first acoustic wave generator, and a second acoustic wave propagating component. The body can define a channel having a first surface and a second surface opposite the first surface. The channel can extend along a longitudinal axis from a first end to a second end. The first acoustic wave generator can be coupled to the first surface. The first acoustic wave generator can be configured to generate an acoustic wave having a wavelength. The second acoustic wave propagating component can be coupled to the second surface. The second surface can be spaced an integer fractional multiple of the wavelength from the first surface and each integer factional multiple equals a number of pressure nodes within the channel.

Abstract: Disclosed is a device for separating a cellular component from a multicomponent fluid. The device can include a body, a first acoustic wave generator, and a second acoustic wave propagating component. The body can define a channel having a first surface, an opposing second surface, a first side, and an opposing second side. The channel can extend along a longitudinal axis from a first end to an opposing second end. The first acoustic wave generator can be coupled to the first surface. The second acoustic wave propagating component can be coupled to the second surface. The first acoustic wave generator and second acoustic wave propagating component can be configured to generate a bulk standing acoustic wave in the channel.

Abstract: Apparatus and methods for concentrating platelet-rich plasma is described herein. One variation may generally comprise a tube having a length and defining a channel within and one or more ports located at a proximal end of the tube and in fluid communication with the channel. A plunger may slidably translatable within the channel while forming a seal against an inner surface of the channel and a float may have a pre-selected density and defining a concave interface surface, wherein the float is slidably contained within the channel such that the concave interface surface is in apposition to the one or more ports.

Abstract: Oxygen diffusive wound dressings and methods of manufacturing and use are described herein. The wound dressing may generally provide a ready supply of oxygen to a wound being treated via one or more oxygen conduits which are designed to pass oxygen from ambient air or other oxygen reservoirs into proximity to the wound, and may also provide for exudate removal through transecting channels in fluid communication with both the wound surface and a hydrophilic absorbent material.

Abstract: Apparatus and methods for processing blood are disclosed in which one variation generally comprises a tube defining a channel and an access tube extending into the channel. An open cell matrix configured to entrap red blood cells may be positioned within at least a portion of the channel. Another variation generally comprises a cylindrical tube and a plunger slidably positioned within the channel. The plunger also has a funnel positioned upon the plunger and is movable therewith. Both the plunger and funnel define a fluid channel through and in communication with the cylindrical tube.

Abstract: Apparatus and methods for separating blood components are disclosed in which an apparatus for separating blood generally includes a tube defining a channel and configured for receiving a quantity of blood and a float contained within the tube and having a density which is predefined so that the float is maintained at equilibrium between a first layer formed from a first fractional component of the blood and a second layer formed from a second fractional component of the blood. Upon completion of the centrifugation, the first layer may be removed from the tube while the float isolates the second layer from the first layer.

Abstract: Apparatus and methods for processing blood are disclosed in which one variation generally comprises a tube defining a channel and an access tube extending into the channel. An open cell matrix configured to entrap red blood cells may be positioned within at least a portion of the channel. Another variation generally comprises a cylindrical tube and a plunger slidably positioned within the channel. The plunger also has a funnel positioned upon the plunger and is movable therewith. Both the plunger and funnel define a fluid channel through and in communication with the cylindrical tube.

Abstract: Separation of a wash liquid from red blood cells is disclosed using a filter separation and pressure differential system. The filter may include a membrane filter.

Abstract: Non-centrifugal methods for generating a solution rich in interleukin-1 receptor antagonist from a tissue comprising cytokine-producing cells. The solution rich in IL-1ra can also include at least one of sTNF-RI, sTNF-RII, IGF-I, EGF, HGF, PDGF-AB, PDGF-BB, VEGF, TGF-?1, and sIL-1 RII.

Abstract: An apparatus may allow 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.

Abstract: Methods for treating pain using a protein solution comprising two or more of IL1-ra, sTNF-R1, sTNF-RII, IGF-I, EGF, HGF, PDGF-AB, PDGF-BB, VEGF, TGF-?1, and sIL-1RII, Compositions may also contain white blood cells and platelets.

Abstract: Methods for making non-immunogenic anti-inflammatory cytokine compositions, comprising (a) obtaining a liquid comprising cytokine producing cells from a mammalian donor; (b) contacting the liquid with a solid extraction material to generate a composition rich in interleukin-1 receptor antagonist; and performing one or both of (i) removing cells from the composition and (ii) freezing the composition. The compositions comprise two or more of IL1-ra, sTNF-R1, sTNF-RII, IGF-I, EGF, HGF, PDGF-AB, PDGF-BB, VEGF, TGF-?1, and sIL-1RII. Compositions may also contain white blood cells and platelets.

Abstract: A system is disclosed for washing a selected component and removing the selected component from a wash material. The selected component may include red blood cells that are washed to remove a rejuvenating solution. The red blood cells may then be removed with various systems, such as a standing acoustic wave system from the wash solution. Pumps and flow restrictors that provide steady flow from pumps that generate pulsed flow are also disclosed.

Abstract: Disclosed is a device for separating a cellular component from a multicomponent fluid. The device can comprise a body, a first acoustic wave generator, and a second acoustic wave propagating component. The body can define a channel having a first surface and a second surface opposite the first surface. The channel can extend along a longitudinal axis from a first end to a second end. The first acoustic wave generator can be coupled to the first surface. The first acoustic wave generator can be configured to generate an acoustic wave having a wavelength. The second acoustic wave propagating component can be coupled to the second surface. The second surface can be spaced an integer fractional multiple of the wavelength from the first surface and each integer factional multiple equals a number of pressure nodes within the channel.

Abstract: Separation devices for separating a component from a multicomponent mixture are provided. The separation devices can include a body that defines a separation channel with a cross-sectional geometry that is not circular, rectangular, or square. The separation devices can be positioned relative to a base having an acoustic wave generator. A standing bulk acoustic wave generated by the acoustic wave generator can separate one or more components from the multicomponent mixture. Methods are provided for separating one or more components from a multicomponent mixture using the separation devices.

Abstract: A system is disclosed for washing a selected component and removing the selected component from a wash material. The selected component may include red blood cells that are washed to remove a rejuvenating solution. The red blood cells may then be removed with various systems, such as a standing acoustic wave system from the wash solution. Pumps and flow restrictors that provide steady flow from pumps that generate pulsed flow are also disclosed.

Abstract: Methods for making non-immunogenic anti-inflammatory cytokine compositions, comprising (a) obtaining a liquid comprising cytokine producing cells from a mammalian donor; (b) contacting the liquid with a solid extraction material to generate a composition rich in interleukin-1 receptor antagonist; and performing one or both of (i) removing cells from the composition and (ii) freezing the composition. The compositions comprise two or more of IL1-ra, sTNF-R1, sTNF-RII, IGF-I, EGF, HGF, PDGF-AB, PDGF-BB, VEGF, TGF-?1, and sIL-1RII, Compositions may also contain white blood cells and platelets.

Abstract: A material separation system and method is disclosed. The system may include a buoy having a volume that includes or houses a reacting component. The buoy may be placed in a container to hold the material to be separated during a separation procedure. The separated material may be used to various procedures following separation.