JP2011011130A5 - - Google Patents

Description

According to one aspect of the present invention, in a centrifuge having a rotor having a plurality of holding holes for holding a sample container, a driving unit for rotating the rotor, and a chamber for forming a rotor chamber for housing the rotor. The horizontal cross-sectional shape of the hole is a substantially triangular shape having three vertices, and the vertical arrangement of the holding holes is such that the turning radius increases from the opening at the top to the bottom at the bottom. The holding hole is formed to be inclined with respect to the rotation axis of the rotor. In the central portion of the rotor , a hollow portion recessed downward is formed. Between the upper end portion of the opening portion and the holding hole of the rotor, continuous annular groove is provided radially to prevent liquid leakage, the opening I circular der lid to be fixed is attached by screws . The holding hole is arranged at a position where one of the three vertices in the cross section is located on the innermost circumference, and the remaining two vertices are located on the outer circumference side and the distance from the rotation axis of the rotor is equal . the holding hole, Ru is the sample container substantially triangular mounted to cross-sectional shape has three apex. At the top of the sample container, the opening is circular and a screw-on lid is attached. The clearance between the inner wall of the holding hole and the outer wall of the sample container attached to the holding hole is preferably 0.1 to 1 mm.

According to still another feature of the present invention, the holding hole is formed on the innermost peripheral side of the holding hole so as to position any one of the three apexes of the sample container. In addition, a neck support member having a circular opening that penetrates the lid of the sample container in the center has the same outer shape as the sample container, and the rotor is mounted on the sample container. Was configured to rotate.
According to still another aspect of the present invention, having a chamber for forming the rotor is a unitary structure having a plurality of holding holes for holding the sample container, and a drive unit for rotating the rotor, the rotor chamber that houses the rotor in a centrifuge, the horizontal cross-sectional shape of the holding hole is held hole so that to increase the radius of rotation in accordance with a substantially triangle have the three vertices portion, the holding hole extending from the top to the bottom of the opening Is formed so as to be inclined with respect to the rotation axis of the rotor, and one of the three apexes of the holding hole is located on the innermost circumference, and the remaining two apexes are on the outer circumference side, and the distance from the rotation axis of the rotor Are arranged at equidistant positions, and the sides of the approximately triangular shape of the holding hole are configured to have the same shape . At the center portion of the rotor is formed recessed gouging unit downward, the the gouging unit part of the upper end portion located on an inner circumference apex caries Chi top of the holding hole, and configured to be chipped off.

According to the first aspect of the present invention, the horizontal cross-sectional shape of the holding hole of the rotor is a substantially triangular shape having three apex portions, and the vertical arrangement of the holding holes is as follows from the top opening to the bottom. Since the holding hole is formed so as to be inclined with respect to the rotation axis of the rotor so that the rotation radius is increased, more samples can be accommodated as compared with a conventional cylindrical sample container. . In addition, since the bottom portion of the rotor is formed in the central portion of the rotor, the weight of the upper portion of the central axis of the rotor can be reduced, and the weight of the rotor can be further reduced.
According to the invention of claim 2, the opening is circular, it is possible to prevent spilling of the sample during extraction operations of the sample container lid is attached, et al., Which is fixed by screws, specimen during centrifugation A sample container structure that does not leak can be realized.

According to the invention of claim 3 , the holding hole has one of the three vertices in the cross section located on the innermost circumference, and the remaining two vertices are located on the outer circumference side and the distance from the rotation axis of the rotor is Since they are arranged at equidistant positions, the surplus part near the top of the outer peripheral part is deleted compared to the conventional cylindrical holding hole, the centrifugal load on the rotor is reduced, and the stress of the entire rotor is reduced. Therefore, it can be expected to improve the centrifugal separation performance by increasing the maximum rotational speed of the rotor.

According to the invention of claim 4, the handle portion threaded is formed, so to secure the lid to the rotor by screwing the Flip I formed in the depression hole can be realized with high sealability sample container .

According to the invention of claim 5 , the distance (L1) between the vertical center line of the sample container and the inner wall inside the sample container is larger than the distance (L2) between the vertical center line and the outer wall outside the sample container. Since the holding hole is configured as described above, the air that moves during centrifugation can be stored at a position on the inner peripheral side. Moreover, since the portion where the air moves is the apex portion of the sample container and is a strong portion, the durability of the sample container is improved and the centrifugal separation operation can be performed stably.

According to the invention of claim 6 , in the opening, the distance (C1) between the vertical center line and the inner wall inside the sample container opening is the distance (C2) between the vertical center line and the inner wall outside the sample container opening. ), The opening can be closed with a screw-on lid, and a highly sealed sample container can be realized.

According to the invention of claim 7 , since the three vertex portions of the sample container are formed with a radius of curvature smaller than the outer diameter of the lid, the strength of the vertex portion is configured to be sufficiently high in a limited thickness container. Can do.

According to the invention of claim 8 , since the holding hole is formed on the innermost peripheral side of the holding hole so as to position any one of the three apexes of the sample container, the mounting position of the sample container is specified. Therefore, it is possible to prevent the phenomenon that a specific portion is rapidly deteriorated, and to extend the life of the sample container.

According to the invention of claim 9 , since the neck support member is installed on the shoulder portion of the sample container and the lid of the sample container is supported, the opening and the lid of the sample container are deformed in the centrifugal force direction by centrifugal force. Can be prevented.

According to the invention of claim 10 , since the clearance between the inner wall of the holding hole and the outer wall of the sample container attached to the holding hole is 0.1 to 1 mm, the sample container can be easily attached and detached and centrifuged. When a centrifugal force is applied to the sample container itself and the sample, excessive deformation and breakage of the sample container can be prevented.
According to the invention of claim 11, one of the three vertices is located at the innermost circumference, and the remaining two vertices are arranged at equidistant positions on the outer circumference side, and each of the substantially triangular holding holes is provided. Since the sides have the same shape, the mounting position of the sample container is not fixed at a specific position, a phenomenon that the specific part is rapidly deteriorated can be prevented, and the life of the sample container can be extended. .

Claims (13)

In a centrifuge having a rotor having a plurality of holding holes for holding a sample container, a drive unit for rotating the rotor, and a chamber for forming a rotor chamber for housing the rotor ,
Horizontal cross-sectional shape of the front Symbol holding hole has a substantially triangular shape having three apexes,
The vertical arrangement of the holding holes is formed such that the holding holes are inclined with respect to the rotation axis of the rotor so that the radius of rotation increases from the opening at the top to the bottom .
Centrifuge characterized that you have been formed recessed gouging portion downward in the center portion of the rotor. Between the opening of the rotor and the upper end of the holding hole, an annular groove that is continuous in the radial direction is provided to prevent liquid leakage ,
The centrifuge according to claim 1, wherein the opening is circular and a lid fixed with screws is attached . The holding hole is arranged at a position where one of the three vertices in the cross section is located on the innermost circumference, and the remaining two vertices are located on the outer circumference side and are equidistant from the rotation axis of the rotor. And
Said retaining hole, centrifuge according to claim 2, the sample container substantially triangular cross-sectional shape having three vertices portion is characterized in that it is fitted. It is attached so as to penetrate through the hole formed in the lid, and has a handle portion in which a screw thread is formed at the tip for fixing the lid ,
The centrifuge according to claim 3, wherein the lid is fixed to the rotor by screwing the handle portion into a screw hole formed in the bore portion . When the sample container is mounted in the holding hole, in a longitudinal section including the vertical center line of the sample container and the rotation axis of the rotor,
The distance (L1) between the vertical center line of the sample container and the inner wall inside the sample container is larger than the distance (L2) between the vertical center line and the inner wall outside the sample container. The centrifuge according to claim 4, wherein a holding hole is formed .   In the opening of the sample container, the distance (C1) between the vertical center line and the inner wall inside the sample container opening is the distance (C2) between the vertical center line and the inner wall outside the sample container opening. The centrifuge according to claim 5, wherein The centrifuge according to any one of claims 1 to 6 , wherein three vertex portions of the sample container are formed with a radius of curvature smaller than an outer diameter of the lid. The innermost side of the holding hole, claim 1-7, characterized in that one any of the three vertices of the sample container to form the retaining hole so that positioned The centrifuge according to one item. The shape seen from above has the same outer shape as the sample container, and a neck support member having a circular opening that penetrates the lid of the sample container at the center is provided,
The centrifuge according to claim 3 , wherein the rotor is rotated in a state where the neck support member is mounted on the sample container. The centrifuge according to any one of claims 1 to 9 , wherein a gap between an inner wall of the holding hole and an outer wall of the sample container attached to the holding hole is 0.1 to 1 mm. Separator.   A rotor that is an integral structure having a plurality of holding holes for holding a sample container;
  A drive unit for rotating the rotor;
  In a centrifuge having a chamber forming a rotor chamber that houses the rotor,
  The horizontal cross-sectional shape of the holding hole is a substantially triangular shape having three apexes,
  The holding hole has a radius of rotation that increases from the top opening to the bottom. The holding hole is formed to be inclined with respect to the rotation axis of the rotor,
  The holding hole has one of the three vertices located on the innermost periphery, and the remaining two vertices are on the outer peripheral side. And arranged at a position where the distance from the rotation axis of the rotor is equal.
  Each of the sides of the substantially triangular shape of the holding hole has the same shape.   In the central portion of the rotor, a recess recessed in a downward direction is formed. The centrifuge according to claim 11. Of the apex of the holding hole, a part of the upper end located on the innermost periphery is cut by the bore. The centrifuge of claim 12, wherein the centrifuge is missing.