JPH0628600B2 - Tri-Day Disk Spencer - Google Patents

Description

Detailed Description of the Invention a. INDUSTRIAL APPLICABILITY The present invention relates to a device for use in dispensing antibiotic-impregnated discs on a medium surface coated with a test organism, in order to test the susceptibility of the organism to antibiotics, namely It relates to dispensers.

B. 2. Description of the Related Art In a conventional dispenser, as described in JP-B-57-22317, disks are ejected one by one from individual cassettes containing a large number of circular disks and are dispensed on a medium surface. Although configured, none have yet been configured to mechanically distribute a tri-disc with three discs affixed to the central portion and both sides of the elongated substrate onto the medium surface.

Conventionally, when distributing the Tri-discs onto the medium surface, the human disks were relied on by picking up the Tri-discs one by one with tweezers and placing them one by one on the medium surface, and then pressing each disc against the medium surface. The distribution was taking place.

C. Problems to be Solved by the Invention In the above-mentioned distribution of tri-discs, not only the distribution work is troublesome and the work efficiency is poor, but also the position of each tri-disc on the medium surface and each disc are pressed against the medium surface. There is a problem that the power tends to vary.

D. Means for Solving the Problems The present invention is intended to provide a tri-disc dispenser capable of solving the above problems.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

In FIG. 1, (1) is a tri-disc, which is an elongated substrate (2) having flexibility, for example, a central portion and both sides of one side of a substrate (2) made of a flexible plastic thin plate, for example, Three discs (3) in which different antibiotics or the same antibiotics but different concentrations are impregnated into the part which is pulled inward from both ends of the substrate (2),
It is made by fixing (4) and (5) respectively. This disc (3),
For (4) and (5), for example, a square filter paper with a thickness of 1 mm is used, and the discs (5), (3) and (4) are arranged in this order or the disc (4),
(3) and (5) are soaked in order of increasing concentration of antibiotics, and the discs (4) and (5) on both sides are fixed with an adhesive at a position retracted about 3 mm from both ends of the substrate (2). To do.

In FIGS. 2 to 7, (6) is a cassette for storing a tri-disc, and a large number of tri-discs (1) are attached to the disc (3),
The case body (7) that stores the stacks with the (4) and (5) facing downwards is provided with an inlet (8) for inserting the tri-disc (1) at the upper end and the tri-disc (1) at the lower end. ) Is provided for discharging, and the side wall (10) in the longitudinal direction of the case body (7), (10) has a notch (11) cut out from the center of the lower end toward the upper end, (11) and slits (13), (13) cut from the lower end toward the upper end so as to form elastic plates (12), (12) on both sides of the notch (11), (11), and elastic Claws (14), (14) protruding from the inside of the lower ends of the plates (12), (12) to prevent the toridisc (1) from falling and the lower corners of the side walls (10), (10) Provided with claws (15), (15) protruding from inside to prevent both ends of the tri-disc (1) from bending downward, and the lateral wall (16), () of the case body (7) in the lateral direction. 16) The width from the bottom edge to the top edge is slightly narrower than the width of the substrate (2) of the Tri-disc (1). Notched so as to have, tri disc (1) is pushing pawl insertion port to prevent the shift to the both ends, (17), (1
7) is provided, an upper lid (20) having a guide tube (19) protruding downward from the central portion is fitted to the inlet (8) of the case body (7), and the inside of the case body (7) is , Protruding upward from the central portion of the lid plate (21) which is superposed on the upper surface of the uppermost tri-disc (1) of the many tri-discs (1) stored in a stack,
And the shaft pin (22) that fits up and down in the guide tube (19),
Insert the inner lid (24), which is provided with side walls (23) and (23) that stand up from both ends of the lid plate (21) and prevents the lid plate (21) from rotating, and insert the upper lid (20) and the middle lid (20). Between the lids (24), a push spring (25) that winds around the outer circumference of the guide cylinder (19) and presses the tori disks (1) on which the inner lid (24) is stacked is interposed, and the case body
One of the side walls (16) and (16) in the lateral direction of (7) has a projection (97), (97) for designating the insertion direction from the upper end to the lower end of both end edges. ) Is provided.

8 to 26, (26) is a dispenser device,
It has the following configuration.

The guide columns (28) are set upright at the four corners of the base (27), and the elevating frame (29) is fitted to each guide column (28) so as to be able to move up and down, and the elevating frame (29) is attached. A push spring (30) suspended so as to be constantly pushed up to the upper end side of each guide column (28) is wound, and a handle (31) is attached to the central portion of the elevating frame (29). Inside the elevating frame (29), above the pedestal (27), there are insertion holes (32) through which a plurality of cassettes (6) are vertically inserted at appropriate intervals.
3) are installed, and the bottom plate (105) having the respective drop openings (34) for dropping the toridisc (1) at the position opposite to the respective insertion openings (32) is installed under these, and each fall At the rim of the mouth (34), the cassette from each insertion hole (32) as shown in Fig. 12
When inserting (6), push the claws (14), (14) apart against the elastic force of the elastic plates (12), (12) to spread them out and release the disk (1) from the disk release claw (35). ), (35) and cassette fixing plates (106), (106) into which both sides of the lower end of the cassette (6) are inserted. As shown in FIG. 9, the cassette fixing portions (33) and (33) are provided with the respective insertion openings (32) alternately displaced to the opposite side, and the insertion openings (32) have opposite ends. Each cassette in the section
Groove (9) that fits the ridge (97) for specifying the insertion direction of (6)
8) is provided. By doing so, when the inhibition circles (104) are formed in the medium (93) in the order of large, medium, and small in each medium in the medium (93) as shown in FIG. 28, their arrangements are alternately reversed. The area of the medium surface can be effectively used.
The lower end of each cassette (6) is the cassette fixing plate (106), (106)
Inserted into each cassette fixing plate (106), at the places spaced apart from the lower ends of each cassette (6), the push-out claws that open at the upper ends of the cassette fixing plates (106) and (106) are inserted. Inside the cassette (6), insert the pushing claws (36), (36) that are inserted into the cassettes (6) from the mouths (17), (17) and receive both ends of the lowest tri-disc (1). A pair of slide plates (37), (37) that slide toward each other are provided, and the slide plates (37), (37) are provided on the upper and lower sides of the slide plates (37),
Guide plates (107) and (108) for guiding the slide of (37) are provided, and a support base (109) is provided at both ends of each slide plate (37) and (37).
, (110) are fixed, and the guide plates (111) and (112) that stand upright from the base are installed at the places with a space inside them.
These include axle pins (11) fixed to supports (109) and (110).
3), (114) are slidably inserted, and each shaft pin (113), (11
4) Each support (109), (110) and each guide plate (111)
, (112) are wound around the springs (38) and (38), and the slide plates (37) and (37) are attached to the pushing claw group.
The tips of (36) and (36) are constantly pushed through the push-out claw insertion openings (17) and (17) to the positions to receive the lower surface of both ends of the lowest tri-disc (1), and at the same time each support ( 109) and (110) on their outer sides, fixed to the base (27) with stoppers (1
Always press 15) and (116). Of the elevating frame (29), the slide plates (37), at positions opposite to both ends of the (37), as shown in Fig. 15, a vertical plane (39) facing inward of the elevating frame (29). , A fixed cam (40) fixed to have (39),
(40) and springs (18), (18) from immediately below the fixed cams (40) and (40)
The movable cams (42) and (42) pivotally attached so as to have inclined surfaces (41) and (41) which are always inclined downward toward the outside of the elevating frame (29) by the elastic force of ), (110) cam followers that move the movable cam (4
2), while contacting the inclined surfaces (41) and (41) of (42), each slide plate (3
7), (37), and then the fixed cam (4
0), (40) vertical faces (39), (39) in contact with each slide plate (3
7), from the cam followers (43), (43) that stay in the position pushed inside (37), then move past the fixed cams (40), (40) and return to their original positions. The cam mechanism is provided. The space (44) between the cassette fixing portions (33) (33) and the base (27) is a plate that horizontally covers the upper part of the space (44) as shown in FIG. Each guide column (4
5) The upper lift plate (46), which is supported by the upper and lower parts, and the space
The lower support plate (48), which is a plate that horizontally covers the lower part of (44) and is vertically supported by the guide columns (47) that are upright from the base (27), is installed between the guide columns. A push spring (49), which is installed so as to constantly push up the upper limit position of the upper lift plate (46), is wound around (45), and each guide column (47) is
The springs (50) suspended so that the lower lift plate (48) is constantly pushed up to the upper limit position are wound, respectively.
(46) and the lower lift plate (48) are provided with through holes (51) and (52) for inserting the cassette (6) inserted from each insertion port (32), and the lower lift plate ( As shown in FIG. 8, the guide columns (45) and the push springs (49) are provided with through holes (53) in the (48). Above the both ends of the upper lift plate (46), the protrusions (54) and (54) protruded from the lift frame (29) are attached to the lift frame (2
Push down the upper lift plate (46) when lowering the (9) push pin (55)
Through the upper and lower sides of the push pin (55) and the upper and lower plates (46) of the push pin (55) by adjusting the screwing amount of the push pin (55). The distance between them, that is, the nut (58) for adjusting the timing when the push pin (55) pushes the upper lift plate (46) and the screw amount of the push pin (55) are adjusted by loosening and turning them. After adjusting the amount of screwing, turn it so that it is tightened.Tighten the nut (95) and attach the collar (59) to the lower end of the push pin (55) .The protrusion (54) of the push pin (55) The portion protruding downward from is provided with a push spring (60) wound around the protrusion (54) and the collar (59) and constantly pushing down the push pin (55).
At the part of the protrusions (54), (54) that is spaced from the push pin (55) on both sides, push down the lower lift plate (48) when lowering the lift frame (29) as shown in Fig. 15. The pins (56) and (56) are screwed by the thread groove parts (61) and (61) provided on the upper parts thereof, and the push pin (5
Push pin (56), (5
The distance between the lower edge of 6) and the lower lift plate (48), i.e. the push pin
When adjusting the timing at which (56) and (56) press the lower lift plate (48), turn it so that it loosens, and then tighten it after adjusting the amount of screwing in nuts (62), (6
2) are screwed in respectively. Through holes (not shown) for inserting the lower ends of the push pins (56) and (56) are provided at the portions of the upper lift plate (46) that face the lower ends of the push pins (56) and (56). There is. In the portions of the upper lift plate (46) and the lower lift plate (48) that are close to the through holes (51) and (52), the lift shaft (63),
Insert (64), and at the upper end of them, lift shafts (63), (64)
Clasp to prevent falling off of the upper lift plate (46)
Attach (65) and (65), and in the middle of the part of the lifting shafts (63) and (64) that projects downward from the upper lifting plate (46), the lifting shaft
Insert the stopper plate (72) horizontally across each of (63) and (64), and attach the collars (66) and (66) that receive the stopper plate (72), and then lift the lifting shaft (63). , (64)
In the part between the upper lift plate (46) and the stopper plate (72), a push spring (6
7) and (67) are wound, and a disc pushing plate holder (68) is connected between the lower ends of the lifting shafts (63) and (64) as shown in the fourteenth illustration. In the state where the lower end of each cassette (6) is inserted between the cassette fixing plates (106) and (106), the lowest position of the tri-disc (1) from the position facing the notch (11). When it projects directly below the disc (3) and receives downward pressure, it rotates downward against the elastic force of the spring, and when the downward pressure is released it receives the spring elasticity and returns to its original position. It is fitted with a disc push plate (69) that moves back. As shown in Fig. 15, the lifting shafts (70) and (71) are inserted into the lower lifting plate (48) near the outside of the lifting shafts (63) and (64), and the lifting shaft (70 ), (71) are inserted into the stopper plates (72) at their upper ends, and the stoppers (73) at their upper ends prevent the lifting shafts (70), (71) from falling out of the stopper plates (72). , (73) and lift shaft (70), (7
In the part of 1) that protrudes downward from the lower lift plate (48), attach the collars (74) and (74) to the middle part,
Between the brims (74), (74) and the lower lifting plate (48), the lifting shafts (70), (7
Push springs (75), (75) suspended so that 1) is always pushed down.
Is wound around the lower end of the lifting shafts (70) and (71).
As shown in the drawing, the disc pushing plate holders (76) and (77) are connected, and the lower end of each cassette (6) is connected to the cassette fixing plates (106) and (106). ) In the state of being inserted between the cassettes (6), they protrude from the positions opposite to each other on both sides of the lower end of each cassette (6) toward the positions just below the discs (4) and (5) of the lowest tri-disc (1), When a downward pressing force is applied, it rotates downward, and when the downward pressing force is released, it is balanced by a weight so that it will return to its original position, or a spring-suspended disc pressing plate (7
8) and (79) are attached. Below the cassette fixing portions (33) and (33), as shown in the eleventh illustration, the tip end portion () into which the cassette (6) inserted from each insertion opening (32) penetrates into the passage (80) is inserted. The intermediate portion of the stopper (82) having 81) is pivotally attached by a pin (83), and the rear end (84) of each stopper (82) has a tip (8
A pulling spring (85) that pulls the rear end (84) is suspended so that 1) always enters the passage (80), and the side edge of the tip (81) facing the passage (80) is suspended. (86) has a notched edge (87),
Inclined plate inclined from side edge (86) to opposite side edge (88)
(89) and the stoppers (8
An engaging portion (90) for engaging the notch edge (87) and preventing the lifting shaft (63) from being pushed down when the tip portion (81) of (2) has entered the passage (80). Is provided. Cassette fixing part (3
3) and (33), in the state where the cassette (6) is completely inserted near both ends of each insertion port (32), the cassette (6)
Fix the cassette fixing leaf springs (99) and (99) that protrude so that the upper edge of the cassette can be pressed, and press the leaf springs (99) and (99) by hand to insert and remove the cassette (6). Do it while doing. When removing the cassette (6), the claws (14) and (14) receive the elasticity of the elastic plates (12) and (12) to close the discharge port (9), and then the both ends of the tri-disc (1). Since it is released from the push-out claws (36) and (36), even if the tri-disc (1) remains in the cassette (6), it does not fall from the discharge port (9). Immediately after each cassette (6) is pulled out, each stopper (82) returns to its original position due to the elasticity of the tension spring (85),
The notch edge (87) engages with the engaging portion of the elevating shaft (63). Under the both ends of the upper lift plate (46), screw it upright from the base (27), and adjust the amount of screwing to disc (3).
A stopper (91) is provided to stop the lowering of the upper lift plate (46) at the time of pressing on the medium surface, and at the lower end of the stopper (91), to adjust the screwing amount, turn it so that it loosens. The nut (92) is screwed in so that it can be tightened when tightened.

E. Operation Next, the operation of the tri-disc dispenser having the above configuration will be described.

First, a plurality of cassettes (6) in which a large number of tri-discs (1) are stored in the case body (7) so that the discs (3), (4) and (5) are stacked downward are shown in FIG. 11. Then, with the discharge port (9) facing downward, each is inserted from each insertion port (32) of the dispenser device (26). Then, the lower end of each cassette (6) first descends while sliding the inclined plate (89) of the stopper (82), so that the tip end of the stopper (82) is pushed away from the passage (80) and at the same time the notched edge ( 87 is disengaged from the engaging portion 90, and the elevating shafts 63 and 64 can be pushed down.
Next, the lower end of each cassette (6) is attached to the cassette fixing plate (106).
, (106) to the position fixed. In the process, each push-out pawl insertion port (17), (17) push-out pawl group (36), (36)
Is inserted, and both ends of the lowest tri-disc (1) ride on the tips of the pushing claw groups (36), (36). Each cassette
When the lower end of (6) is fixed so as to communicate completely with each drop port (34), the claws (14) and (14) hit the disc opening claw (35) as shown in FIG. 12, The elastic plates (12), (12) are pushed out against the elastic force to open the discharge port (9) and release the fall prevention of the tri-disc (1) at the same time.

At a predetermined position below the dispenser device (26) loaded with the plurality of cassettes (6) as described above, the culture medium (93) is poured as shown in the fifteenth illustration, and the test bacteria are applied to the culture medium surface. When the handle (31) is pushed downward while resisting the elasticity of the spring (30) after placing the petri dish (94), the parts of the dispenser device (26) operate in the following order.

The elevating frame (29) descends and the cam (42), as shown in FIG. 16,
Since each inclined surface (41), (41) of (42) descends while hitting the cam followers (43), (43), the cam followers (43), (4)
3) and the slide plates (37), (37) are pushed inward against the elastic force of the push springs (38), (38), and at the same time, the push-out pawl groups (36), (36) are the same. Pushed in the direction. Then, the tips of the pushing claw groups (36) and (36) are fixed to the both ends of the lower surface of the tri-disc (1) as shown in the seventeenth diagram (4),
Since it moves while hitting (5), it fits both discs (4) and (5) inward, and the tri-disc (1) is loaded with the next tri-disc, so the board
(2) bends downwards, and the disc (3) turns into the disc push plate (6
9) Push downward. Then, the disc pushing plate (69) rotates downward against the elastic force of the spring and is pushed away from the lower surface of the disc (3), but the substrate (2) bends further downward as shown in FIG. 18. The disc pushing plate (69) returns to its original position by the elastic force of the spring, and the central portion of the substrate (2) moves below the disc pushing plate (69). At this point, the cam (4
2), (42) each inclined surface (41), (41) is the cam follower (43), (4
3), followed by cams (40), (40) vertical planes (39), (39)
Comes down while contacting the cam followers (43), (43), the cam followers (43), (43) and the slide plates (37), (37) stop at the positions pushed as described above, and the pushing claws Group (3
6) and (36) stop with the substrate (2) bent as described above.

Further, the elevating frame (29) descends, the lower end of the push pin (55) hits the upper elevating plate (46) as shown in FIG. 19, and the upper elevating plate (46) is pushed down. Then, the stopper plate (7
2), the elevating shafts (63), (64) and the disc pushing plate (69) are lowered, and the disc pushing plate (69) causes the disc (3) from the substrate (2) as shown in FIG. 93) Press on. This pressing force is held substantially constant by the elastic force of the pressing spring (67).

At this point, the upper lift plate (46) hits the stopper (91) and stops, so that the force that pushes it down to the disc push plate (69) stops transmitting, and the disc push plate (69) stops.
Stops.

Further, the elevating frame (29) is lowered, and the cams (40), (40) move below the cam followers (43), (43). Then,
The elastic force of the push springs (38) and (38) acts on the slide plates (37) and (37) and the cam followers (43) and (43), and the cam followers (43) and (43) act as cams as shown in FIG. 21. Since it returns to the original position after passing above (40) and (40), the push-out pawl groups (36) and (36) also return to their original positions, and at the same time, both ends of the tri-disc (1) push-out pawl group ( 36), so that the discs (4) and (5) on both sides push away from the disc push plates (78) and (79) located below them, due to the restoring force of the substrate (1). After being rotated to the end, it drops onto the culture medium (93), and the both ends of the toridisc (1) to be dropped next ride on the tips of the pushing claw groups (36) and (36). When the discs (4) and (5) fall onto the culture medium (93) by the restoring force of the substrate (2) from the curved state of the tri-disc (1), push the disc pushing plates (78) and (79) away. If it falls, but the restoring force of the substrate (2) is weak, the disc push plate (78),
It may be skipped in front of (79) and fall to a position where it is removed from directly under the disc pushing plates (78) and (79). In that case, as shown in FIG. 24, a guide plate that guides the tri-disc (1) in front of the disc push plates (78) and (79) so that the tri-disc (1) falls directly below the disc push plates (78) and (79). Provide (96) and (96).

Further, the elevating frame (29) descends and the pressing spring (60) is compressed, and at the same time, the lower ends of the push pins (56) and (56) hit the lower elevating plate (48) as shown in FIG. The lift plate (48) is pushed down. Then, the elevating shafts (70), (71) and the disc pushing plates (78), (79) descend, and the disc pushing plates (78), (7
9) is the disk (4) from above the substrate (2) as shown in the 22nd figure,
Press (5) onto the medium (93). This pressing force is kept substantially constant by the elastic force of the pressing spring (75).

At this point, the lower end of the lifting frame (29) is
6) and the dish (94) are struck against the table (117) on which it is placed, and the lower lift plate (48) is guided by the guide plate (111).
, Close to the top of (112) or guide plate (111)
, (112) is stopped, and the force to push them down is not transmitted to the disc push plates (78), (79), the disc push plates (78), (79) stop, and Distribution of (1) is completed.

When the push-down of the handle (31) is released, the lifting frame (29), lower lifting plate (48), lifting shafts (70), (71), disc pushing plate (7
8), (79), the upper lifting plate (46), the lifting shafts (63), (64), and the disc pushing plate (69) are sequentially lifted to the original position by the elastic force of each pushing spring. During this time, the outer surfaces of the cams (40), (40)
The cam followers (43), (43), (43), and then the outer inclined surfaces of the cams (42), (42) are pushed up by the cam followers (43), (43) to rise, so that the cam followers (43), (43), 43) is stationary in its original position.

The above operations 1 to 5 are simultaneously performed on all the cassettes (6) loaded in the dispenser device (26).

After the dispensing of the Tri-disc (1) is completed, the petri dish (94) is taken out from under the dispenser device (26), a new petri dish is placed under the dispenser device (26), and the above operation is performed again. The distribution of the Tridisk (1) can be repeated.

When the above-mentioned operations (1) to (3) are attempted to be performed in a state where the cassette (6) is not inserted into all or part of each insertion opening (32), the lifting shaft (63 ) Is engaged with the notch edge (87) of the stopper (82) by the engaging portion (90) provided at the upper end thereof, so that it does not descend even when the elevating frame (29) descends, so The disc pushing plate (69) connected between the lower ends of the shafts (63) and (64) also does not descend, and the contact of the disc pushing plate (69) with the culture medium (93) is prevented. Further, the lifting shafts (63) and (64) and the lifting shafts (70) and (71) and the disc pushing plates (78) and (79) connected between their lower ends do not descend, and the disc pushing plates (78 ) And (79) are prevented from contacting the medium (93).

At the inserted part of the cassette (6),
Since the notch edge (87) of 2) is disengaged from the engaging portion (90) of the elevating shaft (63), the above operations 1 to 5 are normally performed.

Cassette loaded in dispenser device (26)
In any one of (6), or in two or more cassettes, when all of the tri-discs (1) have been distributed and there are empty cassettes, when the above operations (1) to (3) are performed, Empty cassette (6) out of the group of extrusion claws (36), (36)
The push-out claw corresponding to the above hits the side walls (23) and (23) of the inner lid (24) in the cassette (6) and stops, making it impossible to push down the handle (31) and operating it further. Can not be.

Disc push plates (69), (70), (71)
It is necessary to adjust the strength with which (3), (4), and (5) are pressed against the medium (93), and to adjust the lowest limit position according to changes in the height of the medium surface. Adjust the push plate (69) by adjusting the amount of screwing in the stopper (91).
For disc push plates (70) and (71), push pin (56),
Adjust by adjusting the screw-in amount of (56).

Incidentally, if the lowermost position of the disc pushing plate (69), (70), (71) is adjusted to be slightly lower than the thickness of the disc (3), (4), (5) from the culture medium surface, Malfunction, eg Tridisk
Even if the tips of the push-out claws (36) and (36) are not caught on both ends of (1), the disc push plates (69), (70), (7
1) does not come into contact with the medium (93).

As means for bending the Tri-disc (1) downward,
The tips of the pushing claw groups (36) and (36) are directly abutted against the discs (4) and (5), and the pushing claw group (3
Steps (118) and (118) are provided at the tips of 6) and (36), and both ends of the Tridisk (1) can be placed on them,
Various means can be adopted, such as providing push-out claw groups (36) at both ends of (1), and pressing portions for pressing the tips of (36).

When the discs (4) and (5) are pressed against the culture medium (93) by the disc pushing plates (70) and (71), a means for stopping the lowering of the raising and lowering frame (29) is to lift the raising and lowering frame (29). Place the bottom edge on the table (11
7) and place it on the platform (29) at an appropriate position on the lifting frame (2
Various means such as providing a stopper for stopping the descending of 9) can be adopted.

As a means for disposing the petri dish (94) under the dispenser device (26), for example, one of the following three means is adopted.

As shown in FIG. 25, the dispenser device (26) is lifted and the petri dish (94) placed on a desk or the like is placed on the petri dish (94) so that the petri dish (94) is located at the center.

As shown in FIG. 26, one side of the base of the dispenser device (26), for example, one side in the longitudinal direction is used as a fulcrum to make a range of 20 ° to 30 °.
After tilting the slide, the petri dish (94) is slid under the dispenser device (26), and then the dispenser device (26) is placed on the petri dish (94).

As shown in FIG. 27, the dispenser device (26) is lifted to a position slightly higher than the height of the petri dish (94) by the spring (101) supported by the pin standing on the bottom plate (100), and the bottom rising (100) is reached. ), Place the petri dish (94) on the drawer plate (102), and push it under the dispenser device (26), and pull the handle (3
When 1) is pushed down, first the entire dispenser device (26) is lowered, and from the time when the platform (27) contacts the petri dish (94),
The operation of the dispenser device (26) itself starts, and after the operation is completed, the entire dispenser device (26) is placed in a petri dish (9
4) Raise the drawer plate (102) to a height where it can be pulled out.

F. EFFECTS OF THE INVENTION Since the present invention is configured as described above, the position and pressing force of the tri-disc can be adjusted by a simple operation of pushing down the elevating frame in a state where the cassette is inserted in all or part of the cassette insertion portion. It can be distributed repeatedly on the surface of the medium without causing dispersion, and the distribution work can be streamlined.
In addition, in the part where the cassette is not inserted, a stopper that stops the lowering of the disc pushing plate is provided to prevent the contact between the disc pushing plate and the medium and prevent their cross-contamination. Can be distributed on the medium surface. In addition, by providing an inner lid inside the cassette, not only can the rotation of the Tri-disc be prevented, but if any of the cassettes loaded in the device becomes empty, the operation of the device is stopped and there is a cassette in which the Tri-disc disappears. It has the advantage of being able to inform.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a perspective view of a tri-disc, FIG. 2 is a perspective view of a cassette for accommodating a tri-disc, and FIG. Fig. 4 is a bottom view of Fig. 3, Fig. 5 is a right side view of Fig. 3, Fig. 6 is an enlarged sectional view taken along line AA of Fig. 3, and Fig. 7 is B of Fig. 3. -B line enlarged sectional view, FIGS. 8 to 23 show an example of a dispenser device, FIG. 8 is a partial sectional side view, FIG. 9 is a partial sectional plan view,
10 is a cross-sectional view of a main part, FIG. 11 is a perspective view of a cassette insertion portion, FIG. 12 is a perspective view of a portion for fixing the lower end of the cassette, and FIG. 13 is a pair of slide plates, a cam, FIG. 14 is a perspective view for explaining the positional relationship between the central portion of the tori-disc and the disc pushing plate for pushing the disc, and FIG. 14 is a pair of slide plates and each disc pushing plate for pushing the central portion and both side portions of the cam and the tori-disc. Fig. 15 is a perspective view for explaining the positional relationship with Fig. 15, Fig. 15 is a diagram showing a state in which a petri dish containing a culture medium coated with the test bacteria is placed under the dispenser device, and Fig. 16 is a movable push-out claw group. FIG. 17 shows a state in which the push-out claws have started to be pushed inward by the cam, FIG. 17 shows a state in which the push-out claw group pushes the tri-disc so that the central portion of the push-claw bends downward, and FIG. 18 shows the push-out claws by the movable cam. 19 to 22 are diagrams for explaining the order in which each disc pushing plate is pushed down, FIG. 23 is a diagram showing an example of changing the pushing claw group, and FIG. 24 is a disc. FIG. 25 to FIG. 27 are perspective views for explaining the positional relationship between the push plate and the guide plate for guiding the drop of the Tri-disc onto the culture medium surface, and FIGS. 25 to 27 show three examples of means for arranging the dish under the dispenser device. FIG. 28 is a perspective view showing an example of an arrangement of blocking circles formed on the medium surface. (1) …… Tridisk, (2) …… Board, (3), (4), (5)…
… Disk, (6) …… cassette, (7) …… case body,
(9) …… Discharge port, (14) …… Fall prevention claw, (17) …… Extrusion claw insertion port, (18) …… Pressing spring, (26) …… Dispenser device, (27) …… Platform , (28) …… Guide support, (29) ……
Lifting frame, (30) …… Pressing spring, (31) …… Handle, (32) …… Insertion port, (33) …… Cassette fixing part, (34) …… Falling port, (35)
…… Disc release claws, (36) …… Extrusion claws, (37) ……
Slide plate, (38) …… Pressing spring, (39) …… Vertical surface, (40)
…… Fixed cam, (41) …… Slope, (42) …… Movable cam, (4
3) …… Cam follower, (44) …… Space, (46) …… Upper lift plate, (48) …… Lower lift plate, (49) …… Press spring, (50) ……
Push spring, (55) …… push pin, (56) …… push pin, (6
3), (64) …… elevation axis, (67) …… pressing spring, (69) …… disc push plate, (70), (71) …… elevating axis, (75) …… pressing spring, (78 ), (79) …… Disk push plate, (91) …… Stopper, (97) …… Protrusions for inserting direction designation, (98) …… Groove, (1
05) ... bottom plate, (106) ... cassette fixing plate.

Claims (6)

[Claims] 1. A cassette comprising a cassette and a dispenser device, wherein the cassette has a large number of tri-discs in which a disc impregnated with an antibiotic is fixed to a central portion and both side portions of a flexible elongated substrate. When the cassette is inserted into the dispenser device, the tips of the ejector claws of the dispenser device are the most It has push-out pawl insertion ports that insert into the cassette so as to receive both ends of the lower tri-disc, and the dispenser device installs the elevating frame via springs above the base and the inside of the elevating frame. Is provided with a cassette fixing part for inserting and fixing a plurality of the above cassettes, and a cassette insertion part is provided under each cassette fixing part. Is provided with a disc opening claw that spreads the fall prevention claw, and a pair of slide plates that connect a pair of push-out claws that respectively receive both end portions of the lowest tri-disc, and the elevating frame, when descending, The push-out claw group pushes the lowermost tri-disc from both ends thereof and pushes it out from the discharge port while bending the central part downward, keeping the disc in the central part in contact with the medium surface, and then returning it to the original position. Returning, provided with a cam mechanism for operating the pair of slide plates so as to drop both ends of the lowest tri-disc to the culture medium surface, connected to the elevating frame, and when bending the central portion of the tri-disc,
A disk pushing plate that presses the central disk against the medium surface in synchronism with the lowering of the elevating frame, and a disk on both sides in synchronism with the lowering of the elevating frame when falling on the medium surface at both ends of the tri-disc. And a disk pressing plate for pressing the disk to the medium surface, and a stopper for stopping the transmission of the pressing force to the disk pressing plate when the disks are pressed to the medium surface. 2. The cassette has a projection for designating an insertion direction,
The tri-disk dispenser according to claim 1, wherein the cassette insertion port of the dispenser device is provided with a groove portion into which the insertion direction designating projection is fitted. 3. An elevating frame in which a dispenser device is fitted to each guide column upright on a bed so as to be able to move up and down, and the upper end side of each guide column is constantly pushed up by a spring, and a handle attached to the elevating frame. , A cassette fixing part that is installed above the platform inside the elevating frame and that has an insertion opening through which the cassettes are vertically inserted at appropriate intervals, and a bottom plate that is installed below the cassette fixing part. A pair of slides, and a pair of slides, each of which has a tori-disc drop port facing each of the above-mentioned insertion ports, and the disc-opening claws at the edges thereof, a cassette fixing plate into which the lower end of the cassette is inserted. A spring that suspends the plate so that the tip of the pushing claw group always presses the bottom surface of both ends of the lowest tri-disc in each cassette, and each slide of the lifting frame. A cam provided so as to have a vertical plane facing the inside of the elevating frame, and an inclined surface sloping downward from the position right below the cam toward the outer lower side of the elevating frame. And the cam followers that are provided at both ends of each slide plate so that when the elevating frame descends, they contact the inclined surface of each cam and then the vertical plane, and then return to their original positions, and the cassette fixing In the space between the base and the base, the upper and lower lift plates and the lower lift plate are individually raised and lowered at intervals in the vertical direction, and are erected to the upper limit positions by springs. Push down the lift plate first, and then push down the lower lift plate to each push pin connected to the lift frame, and the spring on the upper lift plate near the cassette insertion part. And the connecting shaft, the disc pushing plate connected to the raising shaft so that the central portion of the tri-disc is pressed against the culture medium surface when the raising shaft descends, and the cassette inserting portion in the lower raising plate. An elevating shaft connected to a portion approached by a spring and a disk pushing plate connected to the elevating shaft so as to press the disks on both sides of the tri-disk against the culture medium surface when the elevating shaft descends. The tridisk dispenser according to any one of claims 1 and 2. 4. A fixed cam fixed to the elevating frame such that the cam has a vertical plane toward the inside of the elevating frame, and a spring immediately below the fixed cam toward the outer lower side of the elevating frame by the elastic force of a spring. It consists of a movable cam that is pivoted so that it always tilts, and the cam follower contacts the inclined surface of the movable cam and the vertical surface of the fixed cam in this order when the elevating frame descends, and then passes over the fixed cam. The tri-disc dispenser according to claim 2, which is connected to each slide plate so as to return to the position. 5. A push pin that pushes down the upper lift plate is supported so that the distance between it and the upper lift plate can be adjusted, and a push pin that pushes down the lower lift plate is supported so that the distance between it and the lower lift plate can be adjusted. The tri-disc dispenser according to claim 3. 6. The cassette fixing portion is provided with a stopper for stopping transmission of a force for pushing them down to each disk pushing plate when the cassette is not inserted. The described Tri-disc dispenser.