Centrifuge sample container, centrifuge rotor using same, and centrifuge

1. A centrifuge sample container comprising a tubular body part and a bottom part closing a lower end side of the body part, wherein

the body part is a tubular part having two parallel plane surfaces and has an opening which is elliptical when viewed from above;

the bottom part is formed by a semi-cylindrical part and quarter spherical parts connected to sides of the semi-cylindrical part, and a height (H) of the body part is greater than a length (L 2 ) in a short axis direction of the opening; and

a curvature radius (R 1 ) of an outer surface of an arc part of the elliptical shape, a curvature radius (R 2 ) of an outer surface of the semi-cylindrical part, and a curvature radius (R 3 ) of an outer surface of each of the quarter spherical parts are formed to be equal.

2. The centrifuge sample container according to claim 1 , wherein a peripheral edge abutment part which is engaged with a holding hole of a rotor of a centrifuge by expanding radially outward in a flange shape is formed at an upper end side of the opening of the body part.

3. The centrifuge sample container according to claim 2 , wherein a hinge part is formed which is bendable and arranged in a manner of extending from a center of the curvature radius (R 1 ) of the peripheral edge abutment part, and a lid part which seals the opening of the body part is fixed to a front-end of the hinge part; and

the body part, the bottom part, the hinge part, and the lid part are manufactured by integral formation of a synthetic resin.

4. The centrifuge sample container according to claim 3 , wherein a rated capacity of the centrifuge sample container is less than 20 milliliters, and a length (L 1 ) in a long axis direction of the opening exceeds the length (L 2 ) in the short axis direction.

5. The centrifuge sample container according to claim 4 , wherein thicknesses of walls of the body part and the bottom part are uniform.

6. The centrifuge sample container according to claim 5 , wherein one of the quarter spherical parts at a side of the bottom part is an aggregation part of a sample accommodated in the centrifuge sample container.

7. A centrifuge rotor which is an angle type rotor and has a plurality of holding holes holding the centrifuge sample container according to claim 1 , wherein

each of the holding holes have a shape similar to an outer surface shape of the centrifuge sample container; and

a cross-section shape orthogonal to a central axis of the holding hole is an ellipse shape having two parallel straight parts, a long axis direction is arranged to match a radial direction of the centrifuge rotor and a short axis direction is arranged to be a circumferential direction of the centrifuge rotor.

8. The centrifuge rotor according to claim 7 , wherein the holding holes are arranged at equal intervals in the circumferential direction of the centrifuge rotor, and a distance (d) between two adjacent holding holes is smaller than the length (L 2 ) in the short axis of the holding holes.

9. The centrifuge rotor according to claim 8 , wherein an inclination angle of the angle type rotor is 45 degrees and a bottom surface of the centrifuge sample container that is attached to the holding hole is held to intersect at 90 degrees with respect to the inclination angle.

10. A centrifuge, comprising the centrifuge rotor according to claim 7 , a drive part rotating the centrifuge rotor, and a rotor chamber accommodating the centrifuge rotor.