JPS5931318Y2 - Automatic blood cell washing centrifuge - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic blood cell washing centrifuge that performs an antiglobulin test (Coombs test) using a titration plate.

The purpose of this design is to enable the plate tray on which the titration plate is placed to be rotated so that the top surface of the titration plate faces outward, and to adjust the angle of inclination to the desired angle. The purpose is to make it adjustable.

The automatic blood cell washing centrifuge according to the present invention to achieve this purpose has a plate tray on which a titration plate is placed on the periphery of a rotating rotor attached to a vertical rotating shaft rotated by a motor. The rotor is suspended and supported by a support shaft so that it can freely swing between the inside toward the rotation axis and the outside toward the radial direction along the radial direction of the rotor, and an operating arm provided on the plate receiver is attached to the rotation axis. It is characterized in that it is connected to a slidably fitted slider via a connecting rod, and that an operating mechanism that moves the slider up and down is connected to the slider.

Next, an example of implementation will be specifically described based on the drawings.

In FIG. 1, reference numeral 1 denotes a motor for driving an automatic blood cell washing centrifuge A, which is supported on a machine frame a.

Reference numeral 10 denotes a vertical rotating shaft 10 which is rotated by the motor 1 and is installed so as to protrude upward from the motor 1.

Reference numeral 2 denotes a rotating rotor fixed to the rotating shaft 10, and is formed in the shape of an arm projecting in the radial direction (in the left-right direction in FIG. 1) from the boss portion 20 of the rotor. , 3 is suspended and supported by a support shaft 30 so as to be swingable between the inner side toward the rotating shaft 10 and the outer side toward the radial direction along the radial direction (arrow direction) of the rotating rotor 2.

The plate receiving tray 3 is formed in a size capable of mounting a titration plate P having a large number of plate holes W arranged vertically and horizontally, and the plate holes W of the titration plate P.
In order to centrifuge a sample etc. dispensed by a dispensing device (not shown), the centrifugal force caused by the rotation of the rotating rotor 2 causes the specimen to be swung outward around the support shaft 30 (
Fig. 1 The chain ribbon is rotated around the support shaft 30 toward the rotating shaft 10 so that the upper surface of the titration plate P faces outward in order to shake out the upper part separated in the above process. The position of the support shaft 30 that suspends and supports the plate receivers 3, 3 and the rotating shaft 1
By arranging the plate trays 3, 3 so that the distance to 0 is longer than the distance t of the rotation locus around the support shaft 30 of the plate trays 3, 3 (L>t), the plate trays 3, 3 Support shaft 30
This allows it to rotate more toward the rotating wheel 10 side.

Reference numeral 40 denotes a slider that is slidably inserted into a portion of the rotating shaft 10 that projects upward from the rotating rotor 2 so that it can be freely displaced, and a flange portion 41.41 provided at the lower end side of the slider.
is connected via connecting rods 42, 42 to an operating arm 32° 32 raised from the plate side plate 31 of the plate receiver 3, and the connecting rods 42, 42 are connected to the operating arm 32 of the plate receiver 3. The part is a long hole 42a.

42a.

Further, 43 is configured to move the slider 40 up and down along the rotating shaft 10 to rotate the aforementioned plate receiver 3 about the support shaft 30, thereby holding the plate receiver 3 at a desired inclination angle. The upper end of the slider 40 is a suppressing member of the operating mechanism 4, and is fitted and supported in a guide tube 45 provided on the machine frame a so as to be movable up and down.

The tip of a vertical screw rod 46 is screwed into the pressing member 43, and the screw rod 46 is used as the output of a motor M for forward/reverse rotation that is activated by turning on a hand switch (not shown). It is connected to a shaft, and when the threaded rod 46 rotates in the normal direction, the pressing member 43 descends, and when the threaded rod 46 rotates in the reverse direction, the suppressing member 43 rises.

S is a switch that regulates the range of rotation when the plate trays 3, 3 are rotated inward of the support shaft 30 so that the upper surface of the titration plate P set on the rack faces outward; The upper end of the guide tube 45 is arranged so that when the pressing member 43 descends, a flange 43a provided on the suppressing member 43 contacts the switch S and turns off the motor M. It is.

5 is an entrance/exit K through which the titration plate t-p is taken in and taken out.

This is a control device that positions the plate receivers 3, 3 with respect to K. The rotary shaft 10 of the motor 1 is protruded to the lower surface side of the motor 1, and a positioning motor M1 that rotates at a very low speed is attached to the lower end of the motor 1 using an electromagnetic motor. It is connected via the clutch 51, and when the motor 1 is operating (rotating), the motor M is automatically connected.
The conduction with 1 is Jl.

The electromagnetic clutch 51 is set to engage at the same time as the motor 1 stops, and a rotary plate 52 is provided on the downwardly extending portion 10a of the rotary shaft 10 to control the positioning motor M1 to rotate half a rotation at the same time the electromagnetic clutch 51 is engaged. Install the
An entrance/exit K provided with an opening/closing lid (not shown) on its working surface 52a.

A recess 53.K is located at a position corresponding to K, that is, at a 180 degree position.
53, and further includes a microswitch S1 that turns off the motor M1 by acting on each recess 53, 53.
This is a configuration in which this is applied.

In addition, 6 is a guideway that collects the liquid shaken out from the titration plate P by the centrifugal force when the rotating rotor 2 is rotated with the plate receivers 3, 3 rotated inside the support shaft 30. be.

Next, to explain the function and effect, in the automatic blood cell washing centrifuge according to the present invention configured as described above, if the pressing member 43 is pulled up by the operation of the operating mechanism 4, the slider 40 can be freely moved toward the rotating shaft 10. Since the top slides up and down, by rotating the rotating rotor 2 in this state, the plate receiving tray 3
, 3 rotates outward around the support shaft 30, and rotates the titration plate 1-P set on the plate trays 3, 3 with its upper surface facing the rotating shaft 10, It becomes possible to centrifuge the specimen in each plate hole W (test hole) provided in the saucers 3, 3.

In this state, if the suppressing member 43 is moved downward by the operation of the actuating mechanism 4 described above, the slider 40 is pushed downward, and the connecting rod 4 is accordingly pushed downward.
2.42 is the operating arm 32.32 of the plate receiver 3°3
The plate receivers 3, 3 are rotated around the support shaft 30 toward the rotating shaft 10, and the plate receivers 3, 3 are rotated with the support shaft 30 as shown in FIG. 10, so that the upper surface of the titration plate P set on the rack faces outward, which is the centrifugal direction of the rotating rotor 2. As a result, the liquid separated from the sample in the above-mentioned centrifugation is It will be in a state where it will be rolled out quickly.

Therefore, according to the present invention, after centrifugation has been performed by rotating the rotating rotor 2 for a predetermined period of time, the plate receivers 3 are rotated by the operation of the operating mechanism 4 without stopping the rotating rotor 2. Rotate it to the axis 10 side,
Since the titration plate P placed between the support shaft 30 and the rotating shaft 10 can be switched to a state where the top surface faces outward, centrifugation of the sample and the liquid separated from the sample can be performed. The removal can be performed continuously while rotating the rotating rotor 2, and the work can be performed quickly.

Moreover, the angle of inclination when the plate receiver 3 is rotated inside the support shaft 30 can be adjusted to the desired angle by changing the position of the pressing member 43 that regulates the upper limit position of the slider 40 by the operation of the operating mechanism 4. Therefore, depending on the sample,
The angle of the plate tray 3 can be changed and adjusted as desired.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of an automatic blood cell washing centrifuge in which the present invention is implemented, Fig. 2 is an explanatory diagram of the same operation, and Fig. 3 is the same as in Fig. 1.
It is a sectional view taken along the line -■. Explanation of drawing symbols: A...Automatic blood cell washing centrifuge;
1... Motor 10... Rotating shaft, 1
0a...Downward extension part, 2...Rotating rotor, 20...Boss part, 3...Plate saucer, 30...Support Shaft, 31... Plate side plate, 32... Operating arm, 4...
- Operating mechanism, 40...Slider, 41...
・Flange part, 42...Connection rod, 42a・
... Long hole, 43 ... Pressing member, 43a.
...Brim section, 45...Guide tube, 46...
... Screw rod, 5 ... Control device, 51 ...
...Electromagnetic clutch, 52... Rotating plate, 52a.
...Action surface, 53 ... Concavity, 6 ...
... Taxiway, P ... Titration plate, W ...
...Plate hole, a...Machine frame, K...
Entrance/exit.

Claims (1)

[Scope of utility model registration request] A plate tray 3 on which a titration plate P is placed is mounted on the peripheral edge of a rotating rotor 2 attached to a vertical rotating shaft 10 rotated by a motor 1, on the inner side facing the rotating shaft 10 along the radial direction of the rotating rotor 2. The operating arm 32 is suspended from a support shaft 30 so as to be able to swing freely in the radial direction and the outside in the radial direction.
The slider 40 is connected to a slider 40 slidably fitted to the slider 0 through a connecting rod 42, and the slider 40 is connected to an actuation mechanism 4 that moves the slider 40 up and down. Automatic blood cell washing centrifuge.