JPH0515096Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a centrifuge adapter used for attaching a bucket to the rotor of a centrifuge and holding test tubes at the bottom of the bucket.

``Prior art'' When centrifuging a minute amount of a sample such as blood, a minute amount test tube is used. If you put a trace test tube in a regular test tube bucket,
Because the length of the test tube is shorter than the depth of the bucket,
You will not be able to remove the test tube with your fingers. Therefore, the test tube must be removed using tweezers, but it is slippery and the sample that has been centrifuged may mix again.
There was an inconvenience in which the sample was spilled and the test failed.

In order to prevent this, conventionally, an adapter has been used on the bucket to allow the test tube to protrude from the open end of the bucket so that the test tube can be directly grasped with the fingers. That is, as shown in FIG. 5, the raised bottom adapter 12 is inserted into the bucket 11, and the adapter 12
A trace test tube 13 was inserted and held in the container, and at this time, the bottom of the adapter was raised so that the test tube 13 protruded outward from the top of the bucket and the adapter. A ring-shaped protrusion 14 is formed on the outer periphery of the upper end of the bucket, and a pipe hook 15 is engaged with the ring-shaped protrusion 14, and the bucket 11 is hung on the rotor by this pipe hook 15 to perform centrifugation. It is supposed to be done.

When using a conventional adapter in this way, the position of the test tube 13 is located at the top of the bucket and therefore the distance of the test tube to its center of rotation during centrifugation is shortened, i.e. The radius of rotation becomes smaller, and as a result, the centrifugal force becomes weaker, making it necessary to perform centrifugation for a correspondingly longer time. It is not preferable to perform centrifugation for a long time in this way from the viewpoint of speeding up inspection processing. In other words, this goes against the desire to shorten the inspection processing time.

"Means for Solving the Problem" According to this invention, there is provided a test tube holder in which test tubes are housed, a handle that protrudes from the test tube holder upwardly from the opening of the bucket, and these test tube holders. It is provided with a connecting means that can connect the part and the handle by magnetic force and can detach the two connected by the magnetic force.

With this structure, even if the test tube is held in the adapter and the adapter is placed in the bottom of the bucket, the handle can be connected to the test tube holder using the magnetic coupling means to perform the test. The tube holder can be easily taken in and out of the bucket.

"Embodiment" FIGS. 1 and 2 show an embodiment of the adapter according to this invention, and parts corresponding to those in FIG. 5 are given the same reference numerals. In the adapter of this invention, a test tube holder 21 is provided, and the test tube 13 can be accommodated and held within the test tube holder 21. Further, a handle 22 that can be connected to the test tube holding portion 21 by magnetic coupling means is provided to protrude from the bucket bag 11.

That is, in this example, the test tube holder 21 has a tubular shape and has a bottom, and the outer peripheral surface of the bottom has a shape that roughly follows the inner peripheral surface of the bucket 11.
In this example, the test tube 13 is longer than the test tube holder 21, and the test tube 13 is housed in the test tube holder 21 with the upper end of the test tube 13 protruding from the test tube holder 21. I can do it. A ring-shaped magnetic body 23 is fixed to the upper end surface of the test tube holder 21 .

On the other hand, a permanent magnet 24 is attached in a ring shape to the handle 22 facing the magnetic body 23.
The test tube holder 21 and the handle 22 are magnetically coupled by the permanent magnet 24 and the magnetic body 23, and this magnetic coupling can be removed. In order to facilitate this removal, a center hole is penetrated through the handle 22, and a rod 25 is passed through this center hole so as to be freely removable, and the lower end surface of the rod 25 can be compared with the end surface of the test tube 13. A push button 26 is attached to the upper end of the rod 25, and a coil spring 27 is interposed between the push button 26 and the step on the opening side of the center hole. 25 is always biased upwards. When the permanent magnet 24 is magnetically coupled to the magnetic body 23, the upper end surface of the test tube 13 closely opposes the lower end surface of the rod 25, and when the push button 26 is pressed in this state, the magnetic body 23 and the permanent magnet The connection with 24 is released. Further, the length of the handle 22 is selected to be such that it protrudes from the bucket bag 11 when the magnetic body 23 and the permanent magnet 24 are magnetically coupled.

As shown in FIG. 3, a horseshoe-shaped permanent magnet 28 may be used as the permanent magnet, and this may be attached to the lower end of the rod 25.

As shown in FIG. 4, a lead screw 31 is formed on the inner circumferential surface of the upper end of the test tube holder 21, and the test tube holder 21 is covered with a lid 33 having a screw 32 screwed to the lead screw 31. At this time, the upper end surface of the test tube holder 21 is pressed by the O-ring 34 provided on the outer peripheral surface of the lid 33 to block the inside of the test tube holder 21 from the outside. You can also do it. In this case, a magnetic plate 35 may be provided on the upper end surface of the lid 33. As a handle for this, a handle equipped with a permanent magnet as shown in FIG. 1 or FIG. 3 may be used.

"Effects of the Invention" As described above, by using the adapter of this invention, the test tube 13 can be placed near the bottom of the bucket 11, and the presence of the handle 22 allows the test tube holder 2 can be easily taken in and out of the bucket 11, and the test tube holder 21
The coupling between the handle and the handle is performed by magnetic coupling means, and the coupling and release can be easily performed.

In the above description, a metal body made of a magnetic material is attached to the test tube holder 21 side, but a permanent magnet may be attached to the test tube holder 21 side, and a metal body made of a magnetic material may be attached to the handle 22 side. However, in general, the handle 22
Since the number of test tube holding parts 21 is greater than the number of
Those shown in this example are preferred.

In this way, with this device, the test tube can be placed at the bottom of the bucket using the test tube holder, and it is possible to apply a strong centrifugal force to the sample in the test tube, allowing centrifugal separation in a short time. It can be performed. Moreover, the test tubes can be easily taken in and out of the bucket.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the adapter according to this invention installed in a bucket bag, Fig. 2 is a perspective view showing the adapter shown in Fig. 1, and Fig. 3 is a perspective view showing another example of the adapter according to this invention. 4 is a cross-sectional view of another example of the test tube holding portion, and FIG. 5 is a cross-sectional view showing a state in which a test tube is mounted in a bucket using a conventional adapter.

Claims (1)

[Scope of Claim for Utility Model Registration] A centrifuge adapter used for attaching a bucket to the rotor of a centrifuge and positioning a test tube at the bottom of the bucket and holding it within the bucket, which A test tube holder in which a test tube is housed; a handle projecting upward from the opening of the bucket from the test tube holder; and a magnetically coupled connection between the handle and the test tube holder. A centrifugal separator adapter having a connecting means that allows the two to be removed.