A method for processing particles contained in a liquid biological sample is presented. The method uses a rotatable vessel for processing particles contained in a liquid biological sample. The rotatable vessel has a longitudinal axis about which the vessel is rotatable, an upper portion having a top opening for receiving the liquid comprising the particles, a lower portion for holding the liquid while the rotatable vessel is resting, the lower portion having a bottom, and an intermediate portion located between the upper portion and the lower portion, the intermediate portion having a lateral collection chamber for holding the liquid while the rotatable vessel is rotating. The method employs dedicated acceleration and deceleration profiles for sedimentation and re-suspension of the particles of interest.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A storage portion forming a storage space 10, includes an inclined inner wall portion 20 that is connected to a base portion so that the diameter of the inclined inner wall portion gradually decreases; a concave portion 22 is formed at a part of the inclined inner wall portion; and the concave portion 22 includes a concave portion side surface 22b that is connected to a concave portion bottom surface 22a. The concave portion 22 is formed at a position, where the concave portion crosses an interface S between the specimen centrifuged during rotation and air, in a radial direction with respect to the central axis; and the maximum width of the concave portion 22 in a circumferential direction around the central axis is included in a range of 2 mm to a length of 20% of the whole circumference.

A method and device performing the method for estimation of cell count, such as sperm cell count, is disclosed. The device may be a kit including a cartridge configured to hold fluid, such as seminal fluid, and an instrument configured to centrifuge the cartridge. The cartridge and instrument are configured such that, during operation or centrifugation, they are securely attached to each other. The cartridge has a component with a defined cross-sectional volume. The defined cross-sectional volume is used to mark the component with markings, allowing a user of the device to read the markings and estimate cell volume and, thus, concentration. Various embodiments of the device are disclosed.

A centrifuge rotor includes a rotor body having a base, a sidewall, and a top. The top defines an opening that provides access to an annulus cavity inside the rotor body. A cover is removably attachable to the rotor body to seal the annulus cavity. A drive hub extends from a portion of the base of the rotor body and couples to a drive shaft of a centrifuge motor. The rotor body is sized to receive one or more sample containers in the annulus cavity, and to constrain the one or more sample containers inside the annulus cavity between the base, the sidewall, and the top when the one or more containers are advanced radially against the sidewall.

Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.

An injector allowing retraction/pulling of stem cells from adipose tissue via a suction tip and conservation of thereof in a tube without human touch or exposure to air, and it is characterized in that it has a movable modular piston allowing stem cells to be pulled into the tube via the suction tip, and a modular piston pin allowing the modular piston to stay in the tube and having a modular structure detachable from the modular piston.

The disclosure describes methods and devices with which to process and analyze difficult chemical, biological, environmental samples including but not limited to those containing bulk solids or particulates. The disclosure includes a cartridge which contains a separation tube as well as one or more valves and cavities for receiving raw sample materials and for directing and containing various fluids or samples. The cartridge may contain a separation fluid or density medium of defined density, and structures which direct particulates toward defined regions of the cartridge. Embodiments can include a rotational device for rotating the cartridge at defined rotational rates for defined time intervals. Embodiments allowing multiple assays from a single sample are also disclosed. In some embodiments, this device is used for direct processing and chemical analysis of food, soil, blood, stool, motor oil, semen, and other samples of interest.

A modular automatic analyzer using a circular type cartridge enabling centrifugation according to an exemplary embodiment of the present invention includes: a main body frame; an X-axis conveying unit which reciprocally moves in an X-axis direction with respect to the main body frame; a circular type cartridge accommodating housing which is installed with respect to the X-axis conveying unit so as to be reciprocally movable in the X-axis direction by the X-axis conveying unit, a single rotation drive unit which is installed in the circular type cartridge accommodating housing and is rotated step by step at a predetermined interval or rotated at a high speed for centrifugation, a circular type cartridge which is installed at an upper surface of the circular type cartridge accommodating housing so as to be rotatably connected to the rotation drive unit and has wells disposed to be spaced apart from each other at predetermined intervals in a circumferential direction of a disc-shaped main body, a tip lifting unit which picks up and moves a tip upward and downward, a measurement unit which measures a reaction in the well, a Z-axis drive unit which is provided with the tip lifting unit and the measurement unit and reciprocally operates in a Z-axis direction with respect to the main body frame, and a control unit C which controls an automatic immunity analyzer.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.