JP3951602B2 - centrifuge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a holding body for accommodating a sample container (tube) used at the time of centrifugation, and more particularly to a holding body for stably holding a V-bottom centrifuge tube or a self-supporting centrifuge tube. is there.
[0002]
[Prior art]
Conventionally, the V-bottom centrifuge tube 9 or the self-supporting centrifuge tube 10 shown in FIGS. 5 and 6 has been used as a sample container for accommodating a sample during centrifugation. A V-bottom centrifuge tube 9 shown in FIG. 5 has a conical portion formed at the bottom of a cylindrical body, and an opening serving as a sample inlet on the opposite side. Further, the self-supporting centrifugal tube 10 shown in FIG. 6 has a cylindrical body and an opening as in the case of the V-bottom centrifugal tube 9, and a conical portion at the bottom and the side opposite to the opening so as to surround the conical portion. A cylindrical portion extending in the direction is formed. In addition, this cylindrical part has the length extended further downward from the cone part top part, and, thereby, the self-supporting centrifuge tube 10 is comprised so that it may invert.
[0003]
The V-bottom centrifugal tube 9 or the self-supporting centrifugal tube 10 described above is accommodated in the bucket 12 of the swing rotor 16 shown in FIG. 8 while being accommodated in the holding body 11 (tube rack) shown in FIG. The sample in the tubes 9 and 10 is centrifuged by swinging the bucket 12 swingably mounted on the swing rotor 16 rotated by the centrifuge motor from the vertical position to the horizontal position. Yes. As shown in FIG. 7, the tube rack 11 generally has two plates fixed up and down via struts, and the upper plate is formed with a plurality of circular holes for inserting the tubes. Further, in the case of the self-supporting centrifugal tube 10, a flat surface for supporting the tubular portion of the tube bottom is formed on the lower plate, and in the case of the V-bottom centrifugal tube 9, the lower plate is a flat surface. Since the stress concentrates on the top of the cone at the bottom of the tube and breaks, the lower plate is provided with a pad made of an elastic material such as rubber at the position facing the bottom of the tube to reduce the stress at the cone. It was done.
[0004]
Further, the centrifuge tube may be used while being supported by a container holding body called an adapter 15 as shown in FIG. 10 inserted into the tube hole of the angle rotor 14 shown in FIG. However, the bottom portion of the adapter 15 is generally formed so as to receive the conical portion of the V-bottom centrifuge tube 9, and an adapter having a bottom corresponding to the self-supporting centrifuge tube 10 has not been provided. .
[0005]
[Problems to be solved by the invention]
In the above-described swing rotor tube rack, if a V-bottom centrifuge tube and a self-supporting centrifuge tube having a cylindrical portion of the centrifuge tube having the same diameter are mixed, an operator mistakenly replaces the V-bottom centrifuge tube with the self-supporting centrifuge tube There has been a problem that it is used for a rack for use, or a self-standing centrifuge tube is used for a rack for a V-bottom centrifuge tube. That is, in the former case, since the lower plate is a flat surface, there is a problem that stress concentrates on the apex of the cone at the bottom of the tube and breaks the V-bottom centrifugal tube. In the latter case, since the cylindrical part at the bottom of the tube comes into contact with the pad, the height of the self-supporting centrifugal tube is higher than when the pad is receiving the conical part of the V-bottom centrifugal tube. Since the freestanding centrifuge tube is likely to come into contact with the rotor as it protrudes and becomes higher when the bucket swings, it is not preferable in view of safety.
[0006]
In addition, the above-described problem also occurs when a free-standing centrifuge tube is inserted into a V-bottom centrifuge tube adapter used in a centrifuge angle rotor.
[0007]
Furthermore, in the case of a self-supporting centrifuge tube, a flat surface for supporting the cylindrical portion of the lower portion of the tube, a portion supporting the side surface of the cylindrical portion, and a conical portion accommodating the sample are supported at the bottom of the insertion hole of the adapter. A part is needed. Therefore, when a self-supporting centrifugal tube is used as the adapter for the V-bottom centrifugal tube, there is a problem that the cylindrical portion of the self-supporting centrifugal tube is caught by a portion that receives the conical portion of the bottom of the insertion hole.
[0008]
An object of the present invention is to provide a container holder that can solve the above problems, can stably support each centrifugal tube, and can improve workability by preventing breakage.
[0009]
[Means for Solving the Problems]
The purpose is to install a bottom rubber that receives the conical part of the V-bottom centrifugal tube on the lower plate of the tube rack used in the centrifugal swing rotor, and the bottom rubber is expanded by centrifugal force during rotation of the rotor. Supports the conical part of the centrifuge tube and makes the outer periphery of the bottom rubber smaller than the inner diameter of the cylindrical part at the bottom of the free-standing centrifugal tube so that the cylindrical part of the free-standing centrifugal tube does not get caught by the bottom rubber Is achieved.
[0010]
In addition, in adapters used in centrifuge angle rotors, bottom rubber that receives the conical part of the V-bottom centrifugal tube and free-standing centrifugal tube is installed at the bottom of the insertion hole, and the bottom rubber expands by centrifugal force during rotation of the rotor. The cone of the V-bottom centrifugal tube and the cone of the free-standing centrifugal tube are supported, the outer periphery of the bottom rubber is a cylindrical surface, and the diameter thereof is equal to or less than the inner diameter of the cylindrical portion at the bottom of the free-standing centrifugal tube. This is achieved by supporting the side surface of the cylindrical portion of the free-standing centrifugal tube.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The container holder in the present embodiment will be described with reference to FIGS. FIG. 1 is a longitudinal side view showing a tube rack used in a centrifugal swing rotor. The tube rack is composed of two handles 3 for fixing the upper plate 1 and the lower plate 2. The flat portion 4 of the lower plate 2 supports the bottom surface 7 of the cylindrical portion of the self-supporting centrifugal tube, and the bottom rubber 5. The conical portion 8 of the V-bottom centrifugal tube is supported by the inclined surface 6 during the rotation of the rotor.
[0012]
FIG. 2 is a vertical side view showing an adapter used for the centrifugal angle rotor. At the bottom of the test tube hole 24 of the adapter 23 accommodated in the tube hole 22 of the centrifuge angle rotor 21, the flat portion 25 supports the cylindrical partial bottom surface 7 of the free-standing centrifugal tube, and the inclined surface 6 of the bottom rubber 5 rotates the rotor. During rotation, the conical part 8 of the V-bottom centrifugal tube and the conical part 28 of the self-supporting tube are supported. The cylindrical portion side surface portion 27 of the free-standing centrifugal tube that is pushed in the centrifugal direction while the rotor is rotating is supported by the cylindrical portion 26 of the bottom rubber 5.
[0013]
FIG. 3 is a longitudinal side view showing the bottom rubber. The flat portion 31 of the bottom rubber 5 supports the apex surface of the V-bottom centrifugal tube. The inclined surface 6 of the bottom rubber 5 supports the conical portion of the V-bottom centrifugal tube and the conical portion of the self-supporting centrifugal tube that are expanded by centrifugal force during the rotation of the rotor. While the rotor is rotating, the cylindrical portion side surface portion of the self-supporting centrifugal tube pressed in the centrifugal direction by the centrifugal force is supported by the cylindrical portion 26 of the bottom rubber 5.
[0014]
FIG. 4 is a longitudinal side view showing another example of the bottom rubber. The hemispherical portion 41 of the bottom rubber 5 supports a hemispherical portion of a round-bottom cylindrical centrifuge tube and a hemispherical portion of a self-supporting centrifuge tube whose lower sample storage portion is hemispherical. While the rotor is rotating, the cylindrical portion 26 of the bottom rubber 5 supports the cylindrical portion side surface portion of the free-standing centrifugal tube that is pushed in the centrifugal direction by centrifugal force.
[0015]
The strength of the conical portion receiving portion of the sample container holding body is equal to or greater than the centrifugal force applied to the conical portions of the two types of sample containers, and the portion that supports the side surface of the sample container bottom cylindrical portion of the sample container holding body. Is stronger than the centrifugal force applied to the side surface of the cylindrical portion of the sample container.
[0016]
【The invention's effect】
According to the present invention, a centrifugal centrifuge tube or a centrifuge angle rotor can be used without selecting a container seat in a single container holder by using a cylindrical centrifuge tube having a different bottom shape and a diameter of the middle abdomen close to each other. Can be used.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a tube rack according to the present invention.
FIG. 2 is a longitudinal side view showing an adapter according to the present invention.
FIG. 3 is a longitudinal sectional side view showing a bottom rubber according to the present invention.
FIG. 4 is a longitudinal side view showing another bottom rubber according to the present invention.
FIG. 5 is an external perspective view showing a conventional V-bottom centrifuge tube.
FIG. 6 is an external perspective view showing a conventional self-supporting centrifuge tube.
FIG. 7 is an external perspective view showing a conventional tube rack.
FIG. 8 is an external perspective view showing a conventional swing rotor.
FIG. 9 is an external perspective view showing a conventional angle rotor.
FIG. 10 is an external perspective view showing a conventional adapter.
[Explanation of symbols]
Is the upper plate, 2 is the lower plate, 3 is the handle, 4 is the flat part of the lower plate, 5 is the bottom rubber, 6 is the slope of the bottom rubber, 7 is the bottom of the cylindrical part of the free-standing centrifugal tube, and 8 is the V bottom Cone-like portion of the centrifuge tube, 9 is a V-bottom centrifuge tube, 10 is a free-standing centrifuge tube, 11 is a holder, 12 is a bucket, 13 is a swing rotor, 14 is an angle rotor, 15 is an adapter, and 21 is for centrifugation Angle rotor, 22 is a tube hole, 23 is an adapter, 24 is a test tube hole, 25 is a flat part at the bottom of the test tube hole, 26 is a cylindrical part of the bottom rubber, 27 is a side surface part of the cylindrical part of the free-standing centrifugal tube, 28 Is a cone-like part of a free-standing centrifugal tube, 31 is a bottom rubber flat part, 41 is a hemispherical part of the bottom rubber, 71 is a rotor body, and 72 is a bucket.

Claims (4)

A centrifuge comprising: a drive device; a rotor rotated by the drive device; a bucket mounted on the rotor and swingable; and a sample container holder that supports a sample container accommodated in the bucket In
An elastic body capable of receiving the conical bottom portion of the sample container is provided on the lower plate of the sample container holding body, and an accommodating portion into which a cylindrical portion extending longer than the top of the conical bottom portion is inserted is provided around the elastic body. A centrifuge having a sample container holder. A centrifuge comprising a drive device, a rotor rotated by the drive device, a bucket mounted on the rotor and capable of swinging, and a sample container holder for supporting a sample container accommodated in the bucket In
  An elastic body capable of receiving the spherical bottom of the sample container is provided on the lower plate of the sample container holding body, and a receiving portion into which a cylindrical portion extending longer than the top of the spherical bottom is inserted is provided around the elastic body. A centrifuge having a sample container holder. Supports a drive device, an angle rotor having an insertion hole that is rotated by the drive device and has a fixed angle with respect to the rotation axis, and a sample container accommodated in the hole formed in the angle rotor in centrifuge and a sample vessel holder for,
The sample container holder is provided with an elastic body capable of receiving the conical bottom portion of the sample container, and an accommodating portion into which a cylindrical portion extending longer than the top of the conical bottom portion is inserted is provided around the elastic body. A centrifuge having a sample container holder. Supports a drive device, an angle rotor having an insertion hole that is rotated by the drive device and has a fixed angle with respect to the rotation axis, and a sample container accommodated in the hole formed in the angle rotor In a centrifuge equipped with a sample container holder,
  An elastic body capable of receiving the spherical bottom of the sample container is provided in the sample container holding body, and a receiving portion into which a cylindrical portion extending longer than the top of the spherical bottom is inserted is provided around the elastic body. A centrifuge having a sample container holder.

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