JP6375871B2 - Inner cup for centrifuge and centrifuge - Google Patents

Description

  The present invention relates to a centrifuge for separating a sample in the fields of medicine, pharmacy, genetic engineering, biotechnology and the like.

  The centrifuge includes a rotor capable of accommodating a plurality of sample containers filled with a sample therein, and driving means such as a motor for rotationally driving the rotor, and the centrifugal force is applied by rotating the rotor in the rotor chamber. The sample is centrifuged. A swing rotor for a centrifuge accommodates a sample container or a sample container filled with a sample in a bucket having a bottomed portion in an inner cup. The side surface of the bucket is provided with a concave portion that engages with the convex cylindrical surface of the rotor, and is held by the rotor body so as to be swingable. When the rotor is stationary, the central axis of the bucket and the drive shaft of the motor are parallel (swing angle θ = 0 °), but centrifugal force acts on the bucket as the rotational speed of the rotor increases. The bucket swings, and the bucket rotates about the swing axis so that θ> 0 °, and becomes substantially horizontal (θ≈90 °) at a rotational speed that generates a centrifugal force that adds the bucket horizontally. Thereafter, the centrifugal separation operation ends, and θ decreases as the rotational speed decreases, and θ = 0 ° when the rotor stops rotating. As described above, the swing rotor changes the relative angle between the central axis of the bucket and the drive shaft according to the magnitude of centrifugal force during centrifugation. One example of using the inner cup in a centrifuge is separation of red blood cells and plasma in a blood collection bag. The blood collection bag has a capacity of 200 to 600 ml, and a plurality of blood bags are connected to one to five by tubes, and there are various types of blood collection bags, and various types of connection, shapes and materials are used by manufacturers. ing. In order to efficiently process a large amount of blood collection bags at one time, it is currently mainstream to store two or more blood collection bags in one bucket and perform centrifugation.

  In order to centrifuge the blood collection bag as it is, an inner cup attached to the inside of the bucket is used so that it is easy to carry to the subsequent process and the centrifuged separation layer is not disturbed, and the blood collection bag is set in the inner cup. Centrifugal operation is performed in the state. The inner cup is provided with a partition wall for dividing into a plurality of storage chambers. If there is no partition when removing the blood collection bag after centrifugation, the blood collection bag that has lost its support when it is removed may lose shape and disturb the centrifuge layer. In order to prevent these from occurring, the partition wall is provided in order to prevent the other side from being contaminated. FIG. 17 is a perspective view of an inner cup 200 used in a conventional swing rotor. The inner cup 200 is provided with a plurality of partition walls 205 to 207. Here, four storage chambers 201 to 204 are defined, and one bag of each storage chamber 201 is stored. Since the blood collection bag is composed of various shapes and different materials as described above, when the blood collection bag is accommodated in a plurality of inner cups, the hydraulic pressure load due to centrifugal force is equally applied to the adjacent partition walls 205 to 207 from both sides. It doesn't mean. For this reason, in patent document 1, the accommodating part for accommodating multiple blood collection bags in the inner cup 200 is provided, and the site | part which accommodates the thing with which the blood collection bag is filled, and an empty thing separately, and clamps a tube is provided. Proposed. Patent Document 2 proposes that the blood collection bag is accommodated in a cylindrical filter unit, and in that state, the blood collection bag is accommodated in an inner cup separated by a partition plate and centrifuged to prevent damage to the blood collection bag and the inner cup. .

Japanese Patent Laid-Open No. 7-265741 JP 2006-116092 A

  The tube clamping part of patent document 1 is only a function which clamps a tube, and is not countermeasures with respect to the partition wall damage at the time of accommodating the multiple blood collection bag. Patent Document 2 does not directly prevent the hydraulic pressure due to centrifugation to the partition plate, but is a configuration in which the filter unit is rigid to prevent damage to the partition plate and the blood collection bag, and damage due to deformation of the partition plate is prevented. There is no description about the preventive measures.

The present invention has been made in view of the above background, and an object of the present invention is to provide a centrifuge having an inner cup separated by a partition wall, which can increase the rigidity of the inner cup and prevent the partition wall from being damaged. There is.
Another object of the present invention is to provide an inner cup for a centrifuge and a centrifuge using the same, which can further improve the rigidity of the bucket and can be easily taken out and the partition wall is not easily damaged.
Still another object of the present invention is to provide an inner cup for a centrifuge that can prevent damage to a blood collection bag or the like that is accommodated by making the partial regions of the partition wall separately deformable by making cuts, and a centrifuge using the same. Is to provide.

The characteristics of representative ones of the inventions disclosed in the present application will be described as follows.
According to one feature of the present invention, the inner cup to be housed in a plurality of buckets disposed swingably swing rotor body, provided with partition walls for dividing the inside inner cup accommodating chamber for accommodating the sample A plurality of are formed . Further, the partition wall of the inner cup is formed to include a protruding portion protruding above the opening, and a notch is formed so as to extend downward from above the protruding portion and further extend below the opening . It is preferable that the cut direction in the top view is not perpendicular to the axial direction of the holding pin that holds the bucket but is inclined. The partition wall is divided into one side and the other side in the swing axis direction by cutting, and the partition wall on one side and the partition wall on the other side divided by having the width of the cutting are in a non-contact state when viewed in the swing axis direction. The cut portions of the partition on one side and the partition on the other side are formed so as to overlap when viewed from the vertical direction of the partition below the opening. By forming the cut in this way, both sides of the cut portion of the protruding portion can be deformed separately, so that when the blood collection bag or the like is centrifuged, the inner cup is effectively damaged. It becomes possible to prevent.

  According to another feature of the invention, the projection is provided with an extraction hole or irregularity. The extraction holes are circular and are arranged adjacent to each other in the axial direction, and a notch is formed between the two extraction holes. Further, the cut may be formed outside the two extraction holes. It is preferable that a liquid thin film is provided in the cut so that the liquid does not leak from the cut portion to the adjacent storage chamber.

  According to still another aspect of the present invention, the bucket is formed such that a flat plate-shaped reinforcing rib that extends upward from the inner bottom and does not reach the opening of the bucket bridges from one side of the side to the other. As a result, a plurality of storage chambers are defined in the bucket. The inner cup is formed by connecting a plurality of cup-shaped members having an outer shape corresponding to the inner wall shape of the storage chamber of the bucket on the upper side so that a gap below the connected portion straddles the reinforcing rib. It is attached to. The reinforcing rib is preferably formed to a height that overlaps with the position of the holding pin when the bucket is mounted. In this case, the strength of the bucket can be greatly improved. Preferably, the bucket is divided into two storage chambers located on the inner peripheral side and the outer peripheral side when mounted on the rotor, and the reinforcing rib is formed at a position that coincides with the axial direction of the holding pin in a top view.

  According to still another feature of the present invention, a drive shaft rotated by the drive means, a swing rotor body mounted on the drive shaft, a plurality of holding pins arranged on the swing rotor body, and latched on the holding pins Accordingly, in the centrifuge having a plurality of buckets arranged so as to be swingable and an inner cup accommodated in the bucket, the bucket has a substantially rectangular shape in a top view and has a concave portion that engages with the holding pin on the long side portion. A reinforcing rib is formed that extends upward from the bottom of the interior and does not reach the opening of the bucket and is parallel to the axial direction of the holding pin. A containment chamber is defined. Furthermore, a cover that covers the opening of the bucket and that can be opened and closed by a hinge mechanism is provided, a hinge mechanism having a swing shaft is provided on one long side of the bucket, and a lock member for locking the cover is provided on the bucket. It was provided on one long side. The inner cup attached to the bucket has an outer shape corresponding to the shape of the inner wall of the bucket housing chamber, and has a planar protrusion that protrudes upward to facilitate removal. The positional relationship is such that it extends in a direction perpendicular to the swing axis. The lid is provided with two reinforcing ribs that are convex upward and parallel to the lower inner wall, and the reinforcing ribs are arranged so as to be parallel to the protruding portion and spaced apart from each other by a predetermined distance. The positional relationship was such that the protruding portions that protruded entered between the reinforcing ribs. The bucket is formed with a partition plate that extends upward from the bottom inside and does not reach the upper end of the bucket, and the surface of the partition plate is arranged to be parallel to the swing axis of the bucket.

  According to the present invention, the uneven load received by the partition wall from the blood collection bag accommodated in the inner cup is applied to the partition wall and the projecting portion that can be independently deformed by the notch provided obliquely with respect to the plate thickness direction of the partition wall. Therefore, it is possible to prevent breakage of the protruding portion and the partition wall, and to effectively prevent damage to the stored blood collection bag and the like.

It is a front view of the centrifuge by this invention, and has shown the principal part with sectional drawing. It is a section perspective view of rotor assembly 2 of centrifuge 1 concerning the example of the present invention. It is a bottom view of the rotor main body 20 and the bucket 40 of the centrifuge 1 which concerns on the Example of this invention. It is a perspective view of the bucket 40 of FIG. 4 is a perspective view of the rotor assembly 2 showing a set state of the bucket 40 provided with a lid 60. FIG. It is a perspective view of the inner cup 80 simple substance of FIG. FIG. 3 is a top view of the inner cup 80 of FIG. 2. FIG. 3 is a longitudinal sectional view of a plane orthogonal to the swing axis of the inner cup 80 of FIG. 2. FIG. 3 is a perspective view showing a state where a blood collection bag 100 is housed in an inner cup 80 of FIG. 2. It is a perspective view which shows the lid | cover 60, the inner cup 80, and the bucket 40 of the open state. It is a perspective view which shows the lid | cover 60 and the bucket 40 of the closed state. FIGS. 11A and 11B are diagrams showing a single clip 70 in FIG. 11, wherein FIG. 11A is a perspective view seen from the back side, FIG. 11B is a perspective view seen from the front side, and FIG. It is. It is a fragmentary longitudinal cross-sectional view of the clip 70 of FIG. It is a figure which shows the state in rotation of the bucket 40 and the lid | cover 60 of the centrifuge 1 which concerns on the Example of this invention. It is a perspective view of the inner cup 120 in the 2nd Example of this invention. It is a perspective view of the inner cup 140 in the 3rd Example of this invention. It is a perspective view of the inner cup 200 used with the conventional swing rotor.

  Embodiments of the present invention will be described below with reference to the drawings. In the following drawings, the same portions are denoted by the same reference numerals, and repeated description is omitted. Further, in this specification, description will be made assuming that the front, rear, left, right, top, bottom, inner peripheral side, and outer peripheral side are directions shown in the drawing. In addition, when referring to the positional relationship, for example, when referring to parallel, orthogonal, plane, opposite, etc., not only when it is completely parallel, orthogonal, plane, opposite, but also substantially parallel, substantially orthogonal, This includes cases where the plane is substantially flat or substantially opposite.

  FIG. 1 is a longitudinal sectional view of a centrifuge 1 of the present invention. The centrifuge 1 includes a box-shaped housing 11 and is partitioned into two upper and lower spaces by a partition plate 12 near the upper and lower centers inside the housing 11. In the upper space of the partition plate 12, a substantially cylindrical bowl 4 having an upper surface opened is accommodated, and a protective wall 6 is disposed on the outer peripheral side of the bowl 4. The upper surface of the bowl 4 is sealed by a door 14 that can be opened and closed, thereby forming the rotor chamber 3. A refrigeration pipe 16 is wound around the bowl 4, and the interior of the rotor chamber 3 is maintained at a desired temperature by a cooling device (not shown). A rotor assembly 2 is installed in the rotor chamber 3. The rotor assembly 2 is a set of a swing rotor and a housing cover 30 that houses the swing rotor. In this embodiment, the swing rotor rotates while being housed in the housing cover 30. The swing rotor is configured by a plurality of buckets 40 that are fastened to the rotor main body 20 so that the rotor main body 20 attached to the drive shaft 7a is screwed to the drive shaft 7a with a lock screw 35. In the conventional swing rotor type centrifuge, the swing rotor is rotated without using the storage cover 30. However, in the present invention, the centrifugal operation may be performed without using the storage cover 30. Use is not essential to the invention.

  A motor 7 as a drive source is accommodated in the housing 8 at the lower stage partitioned by the partition plate 12 in the housing 11, and the housing 8 is fixed to a mounting member 13 to the partition plate 12 via a damper rubber 9. The The motor 7 is arranged such that its drive shaft 7a extends in the vertical direction. The drive shaft 7a extends from a through hole formed in the bottom of the bowl 4 so as to reach the inner space of the rotor chamber 3, and a crown 7b for transmitting the rotational torque of the drive shaft 7a is provided at the upper end of the drive shaft 7a. The rotor assembly 2 is held by the crown 7b. As the rotor assembly 2 rotates at a high speed, the bucket 40 swings around the swing axis by centrifugal force. The rotor assembly 2 can be removed to the outside from the rotor chamber 3 in the state of the assembly in this state with the lock screw 35 removed, and the rotor assembly 2 is accommodated in the state where the rotor assembly 2 is set in the centrifuge 1. It is also possible to remove the bucket 40 by removing the lid 33 of the cover 30.

  An operation display unit 10 is provided on the inclined panel 15 on the upper rear side of the housing 11. The operation display unit 10 functions as an input unit for receiving input from the user and a display unit for displaying information to the user, and can be formed by a plurality of buttons and an LED display device. You may comprise using a liquid crystal display. Although not shown in FIG. 1, display of information on the operation display unit 10 and control of receiving operation input from the user, rotation control of the motor 7, control of a cooling device (not shown) for flowing the refrigerant through the refrigeration pipe 16 A control unit (not shown) for controlling the entire centrifuge 1 is provided. The control unit is an electronic circuit that includes a microcomputer, volatile and nonvolatile storage memories, and the like.

  FIG. 2 is a cross-sectional perspective view of the rotor assembly 2 of the centrifuge 1 according to the embodiment of the present invention. The rotor assembly 2 includes a rotor body 20 in which a plurality of buckets 40 are set inside a housing cover 30 including a shell 31, a base 32, and a lid 33 (the rotor body 20 also includes a coupling 36 attached with screws). It is a housed assembly. FIG. 2 shows a state in which the inner cup 80 in which the sample 99 is put inside the bucket 40 is mounted. The bucket 40 has an inner wall shape that matches the outer shape of the inner cup 80, and is manufactured by integral molding or machining of an aluminum alloy. The housing cover 30 is used to prevent a temperature rise due to frictional heat with the air due to the unevenness of the rotor assembly 2 and to reduce noise such as wind noise during rotation of the rotor assembly 2 in the centrifugal separation operation. It is important that the thermal conductivity is good, the strength is excellent, and the weight is light. Here, it is made of a metal such as an aluminum alloy. The shell 31 is provided with a lower opening annular base 32, and the shell 31 and the base 32 form a bowl-shaped container. The base 32 is provided with a circular through hole in the center, and a coupling 36 for fixing the rotor body 20 is attached to the upper part of the through hole.

  A circular opening 31 a larger than the outer diameter of the rotor body 20 is formed on the upper side of the shell 31. A disc-shaped lid 33 is attached to the opening 31 a of the shell 31. A knob 34 is attached to the center of the lid 33, and a through hole is provided in the center of the knob 34. The upper end of the lock screw 35 can be inserted into the through hole, and the opening 31a of the shell 31 can be closed. Therefore, the lid 33 is only on the top of the shell 31. The base 32 and the coupling 36 of the shell 31 are fixed by screws, the housing cover 30 and the rotor body 20 can move together, and a fitting hole 36 a provided in the coupling 36 is set in the crown 7 b of the centrifuge 1. After that, the screw assembly 35a of the lock screw 35, which is rotatably attached to the rotor body 20, is screwed into a screw portion (not shown) provided on the crown 7b, so that the rotor assembly is mounted on the drive shaft 7a of the centrifuge 1. The solid 2 is fixed. 2 is a state in which the rotor main body 20 is not rotating, and the opening 41 of the bucket 40 is facing the direction of the opening 31a of the rotor assembly 2. However, the arrow described as centrifugal pressure indicates that the rotor assembly 2 is rotated (the opening 41 of the bucket 40 faces the through hole 22) and the bucket 40 is subjected to the centrifugal force applied to the sample 99 by the centrifugal force. It is the pressure generated by the applied centrifugal load.

  Next, the detailed structure of the swing rotor (the rotor body 20 and the bucket 40) will be described with reference to FIG. FIG. 3 is a bottom view of the rotor body 20 and the bucket 40 of the centrifuge 1 according to the embodiment of the present invention (here, the coupling 36 is not shown). A holding pin 26 protruding in a convex shape from the rotor body 20 is hooked in a concave depression (concave portion) formed in the bucket 40. The rotor body 20 includes a hub 21 having a substantially rectangular parallelepiped outer diameter in which a through hole 22 is formed, an arm portion 23 that extends radially outwardly from the hub 21 and extends in a cross shape when viewed from above, and an arm portion 23. A branch arm 24 connected so as to spread in a V-shape from the vicinity of each tip and a rib 25 for improving strength by connecting the adjacent branch arms 24 with a planar member. The rotor body 20 is manufactured mainly by precision casting made of stainless cast steel or aluminum alloy, and only a portion requiring combination accuracy is cut by machining. The hub 21 is a place to be installed on the coupling 36. When the number of buckets 40 to be attached is four, the four arm portions 23 are arranged around the rotation axis (rotation center) of the hub 21 at intervals of 90 °. Connected evenly. Depending on the number of attached buckets 40, the number of arm portions 23 and the interval (rotation angle) between the arm portions 23 can be arbitrarily set. It is preferable to set so that

  A branch arm 24 is formed on the outer portion of the arm portion 23 so as to branch into two at an angle of approximately 90 degrees. The branch arm 24 extends in a direction perpendicular to the rotation axis and faces the bucket 40 with the bucket 40 interposed therebetween. And the branch arm 24 to be parallel to each other. One bucket 40 is held by these parallel branch arms 24. Each branch arm 24 has a substantially cylindrical shape for supporting the bucket 40, and is formed with a holding pin 26 protruding so as to be a convex portion with respect to the bucket 40 side. The direction in which the holding pin 26 extends (the axial direction of the holding pin 26) is the same direction as the tangential direction of the rotation locus of the rotor body 20.

  FIG. 4 is a perspective view of the bucket 40 used in the centrifuge 1 according to the present embodiment. The bucket 40 is detachable with respect to the rotor main body 20, and can be mounted on the rotor main body 20 by moving the bucket 40 from top to bottom (mounting direction: downward parallel to the axial direction). The bucket 40 has an opening 41 at an upper portion, and internal spaces 48 a and 48 b for accommodating a plurality of inner cups 80 are formed below the opening 41. In the present embodiment, a rotation shaft holding portion 58 for supporting a rotation shaft (not shown) of a hinge mechanism 64 (described later) is formed on one of the long sides of the opening 41, and the recess 52 is formed on the other side. Is formed. Note that the bucket 40 can be used in an open state in which the lid 60 is not provided. In this case, the bucket 40 in which the concave portion 52 and the rotation shaft holding portion 58 are not formed may be used. The bucket 40 is manufactured by integral molding of a metal such as an aluminum alloy, for example, and has a cup shape having a substantially rectangular opening 41 when viewed from above, and the periphery of the opening 41 is partially A thick part 42 having an increased thickness is formed. The bucket 40 of the present embodiment has a shape that separates the internal spaces 48a and 48b, and two protruding portions 41a that are opposed to each other are formed on the inner side. The strength of the bucket 40 is lower than the protruding portion 41a. A partition plate 41b (see FIG. 2) that functions as a reinforcing rib to be raised is formed.

  On the long side surface of the bucket 40, a thick portion 42 and a concave portion sandwiched by two guide ribs 43 extending downward from the thick portion 42 are formed. This concave portion is concave when viewed from the axially outer side of the swing axis of the bucket, and the width of the concave portion is slightly larger than the diameter of the holding pin 26 so that the holding pin 26 can be guided. It is. The main purpose of the guide rib 43 is to form the guide surface 43 a for guiding the holding pin 26, but the rigidity of the bucket 40 can be significantly increased by forming the guide rib 43. In the present embodiment, a continuous groove portion 46 facing the tip end side of the cylindrical surface of the pin receiving portion 44 and having an inverted U shape in a side view in a region orthogonal to the swing axis (the bottom portion in terms of the recess). Formed. The inner surface of the inverted U-shaped groove 46 is formed with an orthogonal surface 45 that is a flat surface orthogonal to the swing axis.

  The bucket 40 illustrated in FIG. 2 is of a type that rotates while the opening 41 remains open, but the bucket 40 may be configured with a lid. By providing the lid 60, it is possible to prevent the connecting tube 105 of the blood collection bag 100 described later from spilling out of the bucket. FIG. 5 is a perspective view of the rotor assembly 2 using the bucket 40 with the lid 60. Here, for convenience of explanation, a state in which the lid 60 is attached to only two buckets 40 is illustrated, and the remaining two buckets 40 are illustrated in a state in which the lid portion is removed (actually, the lid 60 is removed). When used, all buckets 40 are provided with lids 60). Here, the bucket 40 has a substantially rectangular bucket 40 in which the radial length D of the bucket 40 is different from the rotational width W in the top view, and the radial length D> the rotational width W. Then, an inner cup 80 made of synthetic resin is mounted as a sample container inside the bucket 40. The inner cup 80 has an accommodation chamber 81a formed on the outer peripheral side of the rotor body 20, and has a space divided into two having an accommodation chamber 82a on the inner periphery side. In this embodiment, the space (81a, 82a) divided into two parts is arranged separately on the inner peripheral side and the outer peripheral side from the swing axis, and the opening / closing direction of the lid 60 is devised. The lid 60 is provided with a hinge mechanism 64 on one side of the long side of the opening 41 of the bucket 40, and a lid locking mechanism (such as 70) is formed on the other long side. Further, as indicated by a chain line in FIG. 5, the hinge axis of the hinge mechanism 64 is arranged to extend in the radial direction. In this way, the hinge axis is in a relative positional relationship so as to be orthogonal to the swing axis when viewed from above, so that when the lid 60 is opened to remove the inner cup 80 after the centrifugal separation operation is finished, the swing axis is centered. The risk of shaking the bucket 40 can be greatly reduced.

  When the inventors monitored the actual method of taking out the inner cup by the user, after the centrifugal operation was completed, the door 14 of the centrifuge 1 was opened, and the lid 33 of the rotor assembly 2 stopped rotating. And the bucket 40 with the lid 60 closed is visible as shown in FIG. As described above, in FIG. 5, for convenience of explanation, the two buckets 40 are not provided with lids 60, but in actuality, either all are provided with lids 60 or all are not provided with lids. Here, if the access direction of the user to the bucket 40 (the direction facing the rotor when standing on the front panel side) is the direction indicated by the arrow 39, the lid 60 of the bucket 40 indicated by the arrow A located at the front is opened. It will be. If the user is right-handed, the long side of the lid 60 on the hinge mechanism 64 side is suppressed with the little finger from the forefinger of the left hand, and the clip 70 is rotated to the left so that the vicinity of the upper end of the clip 70 as the locking mechanism is pinched with the thumb. By moving, the locked state of the lid 60 is released. When the locked state is released, the user opens the lid 60 by rotating the lid 60 as indicated by the arrow 69 while holding the clip 70 with the thumb of the left hand. Then, since the vicinity of the take-out hole 84 of the inner cup 80 is exposed inside the bucket 40, the user hooks the index cup and the middle finger into the take-out hole 84 of the inner cup 80 with the right hand and pulls the inner cup 80 into the bucket 40. Pull it out upward. At this time, when viewed from the user standing in front of the centrifuge 1, the index finger of the right hand is arranged so that the surface of the inner cup 80 serving as the gripping portion where the extraction hole 84 is formed extends in the left-right direction. When the middle finger is passed from the rear side to the front side, the operation of grasping the inner cup 80 is natural and very easy to take out. After moving the inner cup 80 to the work table or the like, the user rotates the rotor body 20 clockwise by about 90 degrees with a finger to take out the next inner cup 80, and positions the next bucket 40 to the front. The above operation is repeated. At this time, when rotating to the position of the arrow A, the bucket 40 is moved with respect to the rotor body 20 so that the hinge mechanisms 64 of all the buckets 40 are on one side (for example, the left side) when viewed from the direction of the arrow 39. It is good to wear.

  The method of taking out the inner cup 80 described above is merely an example, and is not limited to such a way of taking out. However, when only the inner cup 80 is removed with at least the bucket 40 attached to the rotor body 20. Thus, the configuration of the present invention can effectively prevent the bucket 40 from swinging when the inner cup 80 is taken out. This effect is obtained by the configuration in which the axial direction of the swing axis of the lid 60 is orthogonal to the axial direction of the swing axis (= the circumferential direction and substantially coincides with the rotational direction). is there. Further, since the surface of the partition protrusion 83 of the inner cup 80 extends in a direction perpendicular to the swing axis direction of the hinge mechanism 64 of the lid 60, the other side after the lid 60 is opened with one hand from these relative relationships. The effect that it is easy to take out the inner cup 80 by the hand is obtained.

  FIG. 6 is a perspective view of the inner cup 80 attached to the bucket 40. The inner cup 80 is manufactured by injection molding so that the bucket 40 and the inner cup 80 are in close contact with each other with a gap of several hundreds to several tens of microns. In this way, the outer portion of the inner cup 80 (the portion that contacts the inner wall of the bucket 40) has a so-called near net shape in which the inner surface of the bucket 40 has the same shape, so that a stable centrifugal operation can be performed. In addition, the uneven distribution of pressure applied to the inner cup 80 during the centrifugal separation operation can be effectively reduced. The inner cup 80 has two cup-shaped first containers 81 having storage chambers 81a and 82a and upper portions of the second container 82 connected by connecting ribs 87 and connecting portions 86, and a partition protrusion that extends upward at the connecting portion. The shape is such that the portion 83 is provided. The partition protrusion 83 is formed by aligning the side walls of the two cup-shaped containers and extending so as to continuously protrude upward, and is formed so as to be flush with the walls of the adjacent storage chambers 81a and 82a. It is the planar member made. The partition protruding portion 83 is provided with two circular extraction holes 84, and a notch 85 extending in the vertical direction is formed between the extraction holes 84. The notch 85 is continuously formed from the upper end surface to the lower end portion 85b of the partition protrusion 83, and the direction of the notch (see FIG. 7 described later) is not perpendicular to the surface of the partition protrusion 83 but is oblique. Formed to be. Note that the removal hole 84 is formed to facilitate the removal of the inner cup 80 from the bucket 40, so the shape of the removal hole is not limited to a circular shape. Moreover, the shape which does not open a hole but provides some uneven | corrugated | grooved part may be sufficient.

  The connecting portion connects the upper surface of the first container 81 and the second container 82 directly below the opening surface 81b and the opening surface 82b, and the connecting rib 87 connected on the same surface (horizontal plane) as the opening surface 81b and the opening surface 82b. It is formed by the connecting part 86. In the present embodiment, it is configured to be connected only by the upper part of a plurality of cup-shaped containers (first container 81 and second container 82), and in the part below the connecting part 86, the first container 81 and It formed so that the 2nd container 82 might leave | separate through a clearance gap. The reason why the lower portion is arranged in this manner is to mount the bucket 40 inside the inner cup 80 so as to straddle the partition plate 41b formed on the bucket 40. By providing the partition plate 41b to the bucket 40, the rigidity of the bucket 40 can be greatly improved, and the storage chambers 81a and 82a of the inner cup 80 held thereby are also damaged even if a strong centrifugal acceleration force is received from the sample. There was no fear and a swing rotor with high reliability and durability could be realized.

  FIG. 7 is a top view of the inner cup 80 in the embodiment of the present invention. The inner cup 80 is disposed so that the two storage chambers 81a and 82a are adjacent from the outer peripheral side toward the inner peripheral side, and the long side portion of the inner cup 80 is disposed so as to extend from the inner peripheral side to the outer peripheral side. . The rotor body 20 is held by the holding pin 26 at two locations indicated by arrows 89a and 89b. With this arrangement, in the swing rotor of this embodiment, the position of the hinge mechanism of the lid 60 is the position of the arrow 89a, and the position of the clip 70 is the position of the arrow 89b. In addition, since it is possible to arbitrarily set which short side portion of the bucket 40 is on the inner peripheral side with respect to the rotor body 20, it is possible to set the hinge mechanism to the arrow 89b and the clip 70 to the arrow 89a side. It is. Similarly, since the inner cup 80 is symmetrical in shape on the inner peripheral side and the outer peripheral side, it can be mounted on the bucket 40 with the inner peripheral side and the outer peripheral side reversed. In this figure, notches 85 are formed so as to be at an arbitrary angle rather than at a right angle to the surface of the partition protrusion 83. The cut 85 is formed in a cut direction that is not 90 degrees with respect to the swing axis of the holding pin 26 when viewed from above. In FIG. 7, the length of the notch 85 seems to exceed the plate thickness of the upper end portion of the partition wall protruding portion 83, but it becomes thicker as the plate thickness of the partition wall protruding portion 83 and the subsequent partition wall portion becomes lower. (See FIG. 8 described later). If the width S of the cut 85 is configured to be sufficiently smaller than the diameter of the tube used in the blood collection bag 100 (described later) stored in the storage chambers 81a and 82a, the risk of pinching the tube in the cut 85 is reduced. .

  In this embodiment, the position of the holding pin 26 is indicated by arrows 89a and 89b, and the partition wall protruding portion 83 is disposed so as to pass through the axis of the swing axis in a top view. Therefore, when the lid 60 is opened and closed, there is less risk of the bucket 40 swinging around the swing axis, so there is less risk of swinging when the inner cup 80 containing the sample is taken out from the bucket 40. It is theoretically conceivable that the hinge mechanism of the lid 60 is installed in the vicinity of C1, and the clip 70 is locked at C2. However, this arrangement is not preferable because the swing axis and the rotation axis of the hinge mechanism are parallel to the swing axis, and there is a high risk of shaking the bucket 40 when the lid 60 is opened with one hand. Also, if the hinge mechanism is C1 and the clip is C2 (or the hinge mechanism is C2 and the clip is C1), the length of the long side exceeds the length that can be operated with one hand, which is not preferable from the viewpoint of operability. It is.

  FIG. 8 is a view showing a cross-sectional shape of the inner cup 80 in the BB portion of FIG. The inner cup 80 has a shape such that the first container 81 and the second container 82 are arranged with a gap 88 in the lower part and the upper part is connected to the connecting part 86. Below the connecting portion 86, the first container 81 and the second container 82 are separated from each other, the partition wall 81c and the partition wall 82c are not in contact with each other, and the gaps 88 thereof straddle the partition plate 41b. It is attached to. The upper side of the connecting portion 86 is formed so that the partition wall 81d of the first container 81 and the partition wall 82d of the second container 82 are integrally formed to be a plane continuous with the partition wall protruding portion 83 extending upward. In FIG. 8, it seems that the partition wall 81d and the partition wall 82d are separated in the upper part from the connecting portion 86, because this is because the cut 85 formed obliquely is located in the central part, and the cross-sectional position is B- As can be understood from being slightly shifted from the portion B, the partition wall 81d and the partition wall 82d above the connecting portion 86 are an integral partition wall having no space portion therebetween. In the present embodiment, the height H1 of the connecting portion 86 with respect to the height H of the opening surfaces 81b and 82b of the inner cup 80 is more than half. For this reason, since the height (≈H1) of the partition plate 41b of the bucket 40 can be sufficiently secured, not only the rigidity of the bucket 40 but also the strength against the centrifugal load force of the inner cup 80 held thereby are greatly useful. In addition, since the effect of improving the strength of the bucket 40 can be obtained even if the height H1 of the connecting portion 86 is reduced to about H1 = H / 2 or H1 = H / 4, for example, the ease of manufacturing the bucket 40 is improved. The height of H1 may be set as appropriate depending on the strength required for the bucket 40 and the like. In addition, it is also possible to comprise so that the partition plate 41b may not be provided in the bucket 40. In that case, it joins from the top to the bottom without providing the clearance gap 88 between the 1st container 81 and the 2nd container 82. A shape like this may be used. This can be realized in a shape as shown in FIG. 17 in which the partition wall protruding portion 83 and the extraction hole 84 are provided.

  Next, a state where the blood collection bag 100 containing the sample (blood) is put in the inner cup 80 will be described with reference to FIG. In the perspective view of FIG. 2, a state in which the liquid sample 99 is directly placed in the storage chambers 81 a and 82 a of the inner cup 80 is illustrated. However, the storage chambers 81a and 82a may not contain the sample directly but may contain the blood collection bag 100 containing a sample such as blood. FIG. 9 illustrates an example in which a blood collection bag 100 in which a plurality of bags (parent bag 101 and child bag 103) are connected by a connecting tube 105 is accommodated. The parent bag 101 and the child bag 103 are provided with two suction distribution tubes 102 and 104, respectively. When the blood collection bag 100 having such an external shape is not constant and has an attachment such as a connection tube is centrifuged, not only the arrangement of the bag but also the handling of the connection tube 105 becomes a problem. Usually, the blood collection bag 100 to be centrifuged is arranged so that the portion where the blood is collected comes to the bottom of the storage chambers 81a and 82a. If the connection tube 105 is on the bottom side, the blood collection bag is forcibly stretched due to the unevenness and the blood collection bag 100 is more likely to be damaged during the centrifugation. It is important to gather them on the opening surfaces 82b and 82b side). In this state, the swing rotor is rotated at a high speed. However, when a centrifugal load is applied, the swing rotor is not necessarily placed on the partition walls 81d and 82d (see FIG. 8) between the storage chambers 81a and 82a, and on the inner and outer peripheral sides of the partition protrusion 83. The pressure may not be applied evenly, and the pressure distribution may be uneven. If this pressure becomes non-uniform, there is a risk of damage to the partition wall protrusion 83 and the partition walls 81d and 82d. Therefore, in the present invention, the notch 85 is formed from the top to the vicinity immediately above the connecting portion 86 in the partition wall protruding portion 83 near the center as viewed in the axial direction of the swing axis. Since the notch 85 is inserted from the upper end position of the partition wall protruding portion 83 toward the bottom to the depth of cut 22, the axial direction of the partition wall protruding portion 83 even if the connecting tube 105 leans unevenly against the partition wall protruding portion 83 during centrifugation. Since both side portions of the inner cup 80 can be separately deformed, the breakage of the inner cup 80 in the vicinity of the partition protruding portion 83 can be effectively prevented. Unlike the case where the cut 85 is formed in an oblique direction rather than a direction orthogonal to the axial direction of the swing axis, unlike the case where the cut is made in the direction perpendicular to the plate thickness direction of the partition protrusion 83, the blood collection bag 100 and the connecting tube 105 are deformed. The risk of damaging the blood collection bag 100 and the connecting tube 105 can be reduced.

  As described above, when a sample container made of various shapes and different materials such as a blood collection bag is centrifuged by the inner cup 80, a hydraulic load due to centrifugal force is not necessarily applied to adjacent partition walls. Although not necessarily, in this embodiment, the storage chambers are divided into a plurality of spaces 81a and 82a, and they are joined by a partition wall. The partition wall protrudes upward from the inner cup 80, and the protruding portion is provided with an extraction hole 84 or an uneven portion for easy removal from the bucket 40. Further, since the partition wall protruding portion 83 is cut obliquely with respect to the partition wall thickness direction from the upper end surface to a portion that does not reach the same position as the upper end surface on the opening side when the sample container is accommodated, the partition wall is effectively damaged. Could be prevented. As a result, it is possible to prevent damage to the blood collection bag due to breakage of the inner cup 80 and to prevent contamination from the breakage portion of the partition wall to the other storage chamber adjacent thereto. In addition, even if the contamination was avoided, the possibility of losing the support by the other blood collection bag, causing the shape loss, disturbing the centrifuge layer, and making the precious sample unusable could be greatly reduced.

  Next, the lid 60 attached to the bucket 40 and the lock mechanism for fixing the lid 60 will be described with reference to FIGS. The lid 60 is fixed in a single-opening manner having a hinge mechanism on one side, and a lock mechanism is provided on the long side facing the hinge portion. Here, the locking mechanism includes a clip 70 that is pivotally supported by a rotation shaft fixed to the lid 60 and has a latching piece, and a recess 52 formed on the bucket 40 side so as to engage with the latching piece. Formed by. The lid 60 is manufactured by integral molding of a synthetic resin such as plastic from the viewpoint of ease of manufacture and weight reduction, and the clip 70 is also an integral molded product made of synthetic resin. The lid 60 has an outer edge along the opening of the bucket 40, is covered so as to protrude upward, and a flange 61 for improving close contact with the bucket 40 is formed in the opening 60a. The Two reinforcing ribs 67 extending in parallel are formed at the center of the inside of the lid 60 (the side facing the storage chambers 81a and 82a). When the lid 60 is closed, the reinforcing ribs 67 are configured to have a parallel positional relationship such that a predetermined distance is provided between the inner peripheral side and the outer peripheral side of the partition wall protruding portion 83. The partition protrusion 83 and the reinforcing rib 67 are not brought into contact with each other because the partition protrusion 83 provided with a notch 85 and allowing slight deformation at the time of centrifugation can move freely. On the other hand, the gap between the reinforcing rib 67 and the partition protrusion 83 when the lid 60 is closed may be configured to be sufficiently smaller than the diameter of the connection tube 105 of the blood collection bag 100. With such a narrow gap, when the connecting tube 105 does not fit properly in the storage chambers 81a and 82a, for example, when the storage tube 81a straddles the other storage chamber, the lid 60 is provided. This is because the user can feel whether or not the blood collection bag 100 is properly accommodated in the open / closed state of the lid 60 because it does not close properly.

  Reinforcing ribs 68 are provided on the inner peripheral side and the outer peripheral side of the reinforcing rib 67 of the lid 60. The lower end position of the reinforcing rib 68 is positioned higher than the lower end position of the reinforcing rib 67 so as not to prevent accommodation of the blood collection bag 100 when the lid 60 is closed. Two attachment arms 62 are formed on the long side portion of the lid 60, and a rotation shaft 63 (described later in FIG. 13) is provided to connect the attachment arms 62, and supports the clip 70. In the long side portion of the bucket 40, step portions 51, 54a, and 54b are formed to form the recess 52, and a lateral through hole 55 is formed so as to extend from the step 54a to the step 54b. Further, a width that engages with a retaining piece 72 (described later in FIG. 12) of the clip 70 by opening two longitudinal grooves 53 with a drill downward from above the concave portion 52 formed in the stepped portion 51. Can be formed.

  FIG. 11 is a perspective view of the bucket 40 showing a state in which the lid 60 is closed. The lid 60 is preferably made of a transparent or translucent resin so that the internal situation can be seen when closed. The upper surface 60b of the lid 60 is formed in a curved surface that is convex upward so as to be strong against centrifugal loads. Further, a recess 60c that is recessed inward is formed in the vicinity where the clip 70 is attached. Although not visible in FIG. 11, a concave portion is similarly formed on the hinge mechanism 64 side. The clip 70 is pivotally supported on the lid 60 side, and moves accompanying the lid 60 when the lid 60 is opened and closed. Therefore, when the lid 60 is opened, there is no protruding member in the opening 40a of the bucket 40, so that the inner cup 80 can be taken out or attached smoothly.

  12 is a view showing the clip 70 alone in FIG. 11, wherein (1) is a perspective view seen from the back side, (2) is a perspective view seen from the front side, and (3) shows a cross-sectional shape. It is a cross-sectional perspective view. In this embodiment, the lid 60 is a single-open type using a hinge mechanism 64 and is configured to be fixed to the bucket 40 by a clip 70 pivotally supported on the lid 60 side. The clip 70 is manufactured from a synthetic resin such as plastic. However, during the centrifugal separation operation, not only the lid 60 but also the clip 70 is similarly subjected to a centrifugal load. Therefore, it is necessary to configure the clip 70 with a light material, and it is preferable to avoid using a torsion spring for biasing the clip 70 in a predetermined direction. This is because even a lightweight torsion spring is subjected to a large centrifugal load, and the metal torsion spring causes damage to the synthetic resin parts of the clip 70 and the lid 60. On the other hand, the member to be hooked is a metal bucket 40, which is made of a material that does not elastically deform when the clip 70 is mounted, so that the clip 70 side is sufficiently elastically deformed in order to realize the lock mechanism. Must be configured. Therefore, in this embodiment, the clip 70 is configured to swing around a rotating shaft 63 (described later in FIG. 13) provided on the lid 60 side, and is a convex hook that engages with the concave portion 52 of the bucket 40. A stop piece 72 was provided. Furthermore, slits 75a and 75b extending in a direction parallel to the axis of the swing shaft of the clip 70 are provided at and near the convex hooking piece 72. A central portion 70b of the clip 70 as viewed in the vertical direction holds the clip 70 so as not to fall off the rotation shaft 63 by being attached to the rotation shaft 63, and only a predetermined angle with respect to the rotation shaft 63. A cylindrical surface 71 is formed so that it can swing. On the upper side of the central portion 70b, an upper arm portion 70a serving as an action piece that is acted upon when the user opens the lid 60 is formed. In addition, a holding piece 72 that fits into a recess 52 (see FIG. 13 to be described later) formed in the bucket 40 is held below the central portion 70b, and when the user closes and locks the lid 60. A lower arm portion 70c serving as an action piece to be acted is formed.

  In FIG. 12 (2), two ribs 73 are formed on the outer side when viewed from the bucket 40 of the upper arm portion 70a. The rib 73 is a convex portion extending in a direction parallel to the swing axis of the clip 70, and is a portion that comes into contact with a finger when the user pushes the upper arm portion 70 a from the outside to the inside, and is formed integrally with the clip 70. . Similarly, when the user pushes the lower arm portion 70 c from the outside to the inside, three ribs 74 that are portions that come into contact with the finger are also formed on the clip 70. The cylindrical surface 71 is formed by two cylindrical holding members 71a and 71b which are divided into two parts, and the holding members 71a and 71b cause the cylindrical surface 71 to turn the rotating shaft 63 (FIG. 13) by the elastic force caused by the material of the clip 70. Can be attached or removed easily. The latch piece 72 formed on the lower arm portion 70c has a thin attachment portion 72a when viewed in a sectional view as shown in (3), and the thickness in the vertical direction increases from the attachment portion 72a to the vicinity of the center on the front end side. The number of claw portions 72b is increased, and the distal end portion 72c has a narrowed shape for easy mounting. Here, the outline of the latching piece 72 in a cross-sectional view is a semicircular shape on the lower side and a shape close to a key shape on the upper side. Further, slits 75a and 75b are formed in the lower arm portion 70c. The slit 75 a is formed so as to penetrate from the front surface to the back surface of the clip 70, and is formed so as to extend in a direction parallel to the swing axis of the clip 70. Here, two slits 75 are formed: a slit 75 a provided at a position coincident with the latching piece 72 when viewed in the vertical direction, and a slit 75 b formed near the upper side of the latching piece 72. The widths of the slits 75a and 75b are preferably about the same as the distance between the center positions of the longitudinal grooves 53 in FIG. By forming the slit 75 in this way, the position of the latching piece 72 can be moved by a minute distance in the vertical direction by the elastic deformation force of the synthetic resin, and the thickness in the vertical direction of the claw portion 72b of the latching piece 72 is increased. Can be changed. For this reason, the latching piece 72 can be fitted into or removed from the recess 52 of the bucket 40, and the lid 60 can be fixed to or released from the bucket 40 by the clip 70.

  FIG. 13 is a partial longitudinal sectional view of the clip 70 of FIG. The state shown in the figure shows a state in which the lid 60 is closed and the clip 70 is positioned in the locked state, and the latching piece 72 is fitted inside the recess 52 of the bucket 40. The recess 52 has a substantially circular cross-sectional shape due to the characteristics of the cutting method, and the latching piece 72 that has entered the inside spreads in the vertical direction by elastic deformation so that the latching piece 72 does not come out of the recess 52. When the operator closes the lid 60, the lid 60 is closed and the flange portion 61 is brought into contact with the opening 41 of the bucket. Fit in. In the clip 70, a cylindrical surface 71 is pivotally attached to a rotation shaft 63 that is fixed to an attachment arm 62 of the lid 60. Here, the rotation shaft 63 is formed with a portion projecting in a convex shape in a sectional view on the lower side thereof, and the clip 70 is restricted so as not to rotate more than a predetermined angle when the lid 60 is opened, and when the lid 60 is closed. The risk of damage due to the lower end of the clip 70 being sandwiched between the openings 41 is reduced.

  When the lid 60 is closed, the lower end position of the reinforcing rib 67 formed inside the lid 60 is higher than the height of the opening surfaces 81b and 82b of the inner cup 80 by a distance d. If the distance d is configured to be sufficiently smaller than the diameter of the connecting tube 105 (see FIG. 9), the lid 60 can be smoothly moved from the storage chamber 81a to the storage chamber 82a or when the connecting tube 105 straddles in the opposite direction. It means not closing. The lower end position of the reinforcing rib 67 and the upper end positions of the opening surfaces 81b and 82b are preferably arranged so as to have a slight gap. Further, in order to prevent the load applied to the lid 60 from being applied to the inner cup 80 when a centrifugal load is applied, not only the reinforcing rib 67 but also any part of the lid 60 is not in direct contact with the inner cup 80. And good. In the present embodiment, the flange portion 61 of the lid 60 is in direct contact with the opening 41 of the bucket 40, and a packing 49 is interposed in the groove portion 42 a provided in the bucket 40. A cut 85 is formed in the inner cup 80. The cut 85 extends downward between the two through holes 84 as indicated by an arrow 85c from the upper end of the partition wall protruding portion 83, and the lower end thereof is at least an opening surface 81b. , 82b so as to extend downward.

  FIG. 14 is a diagram illustrating a state in which the bucket 40 and the lid 60 of the centrifuge 1 according to the embodiment of the present invention are rotating at high speed. In FIG. 14, the rotor main body 20, the base 32, the coupling 36, and the lock screw 35 are omitted and shown in an integrated manner. The height of the reinforcing rib 67 is L1, the height of the reinforcing rib 68 (the length in the height direction of the bucket) is L2, and the blood collected in the inner cup 80 with the length of the reinforcing rib 68 shortened. The volume of the space portion is not limited as much as possible to the pack 100 or the like. Note that the lower end portion of the reinforcing rib 68 and the opening surface 81b of the inner cup 80 are configured so as not to contact each other at a distance d. Here, the bucket 40 is in a state of swinging in the horizontal direction around the central axis (swing axis) of the holding pin. At this time, it can be understood that the partition wall protruding portion 83 of the inner cup 80 and the reinforcing rib 67 of the lid 60 are in a non-contact state with a predetermined distance c therebetween. Even if a non-uniform load is applied from one of the two storage chambers of the inner cup 80 to the other side via the partition protrusion 83, the gap between the two reinforcing ribs 67 is coupled with the provision of the notch 85. It becomes movable.

  As described above, in this embodiment, the lid 60 can be attached to the bucket 40, and the locking mechanism is realized by a mechanism using the clip 70. Therefore, even if the sample is spilled for some reason during the centrifugation operation, Could reduce the risk of splashing. Moreover, since the lid 60 is transparent or translucent, it is easy to handle because the internal situation is known. Furthermore, since the portion of the locking mechanism of the lid 60 that is easily damaged is the inexpensive clip 70, the replacement is easy and the cost for the replacement can be reduced.

  FIG. 15 is a perspective view of the inner cup 120 in the second embodiment of the present invention. In the second embodiment, the depth of the cut 125 is further deepened as compared with the first embodiment. The lower end 125b of the cut depth 125 extends to the vicinity of the bottom of the storage chambers 121a and 122a. In this case, it is necessary to change the shape of the bucket 40, and it is necessary to reduce the height of the partition plate 41b (see FIG. 2). On the other hand, when the notch 125 is deepened, there is a risk that when the sample leaks in one of the storage chambers 121a and 122a divided by the partition protrusion 123, the other storage chamber is reached. Therefore, although not shown in FIG. 15, if the cut-out 125 is closed by applying a thin film tape 129 of about 1/10 or less of the thickness of the partition wall, the partition protrusion portion is prevented while preventing liquid leakage. 123 unbalanced deformation can be allowed. The tape 129 may be similarly attached to the accommodation chamber 122a side as well. The tape 129 may be formed of a material having a certain degree of elasticity, or may be formed of a special tape in which only a portion facing the notch 125 has a bellows shape. Further, instead of closing with the tape 129, the entire inner wall portions of the accommodating chambers 121a and 122a including the notch 125 portion may be covered with some thin film. With this configuration, even if the blood collection bag 100 in one of the storage chambers 121a and 122a is damaged, contamination to the other can be prevented.

  FIG. 16 is a perspective view of the inner cup 140 in the third embodiment of the present invention. Here, a plurality of cuts are arranged in the partition protrusion 143. That is, a notch 145 is formed in the vicinity of the center in the axial direction of the swing axis of the partition protrusion 143 and extends in the vertical direction between the two extraction holes 144, and the notches 148 are formed on both sides of the extraction hole 144, respectively. These cuts 145 and 148 are cut obliquely with respect to the surface of the partition protrusion 143. In this embodiment, the lower end 145b of the notch 145 and the lower end 148b of the notch 148 are formed so as to be different in position, but the depth of the notch may be the same, or the depth may be changed at the center and both ends. Also good. By providing the plurality of cuts 145 and 148 in this way, the partition protrusion 143 can be flexibly deformed against an uneven load caused by the connecting tube 105 or the like. Here, the partition protrusions 143 to be connected are formed so that the upper ends thereof are above the opening surfaces 141 b and 142 b and the lower ends thereof extend below the lower ends 145 b of the cuts 145.

  As mentioned above, although this invention was demonstrated based on the Example, this invention is not limited to the above-mentioned Example, A various change is possible within the range which does not deviate from the meaning. For example, in the above-described embodiment, the number of storage chambers of the inner cup 80 has been described as two, but it is also possible to use one or more than three, and in the case of three or more, each partition wall that separates the storage chambers. What is necessary is just to form the notch formed diagonally from the top to the downward direction.

DESCRIPTION OF SYMBOLS 1 Centrifuge 2 Rotor assembly 3 Rotor chamber 4 Bowl 6 Protective wall 7 Motor 7a Drive shaft 7b Crown 8 Housing 9 Damper rubber 10 Operation display part 11 Housing | casing 12 Partition plate 13 Mounting member 14 Door 15 Inclination panel 16 Refrigeration piping 20 Rotor Main body 21 Hub 22 Through hole 23 Arm portion 24 Branch arm 25 Rib 26 Holding pin 30 Housing cover 31 Shell 31a Opening portion 32 Base 33 Lid 34 Knob 35 Lock screw 35a Screw portion 36 Coupling 36a Fitting hole 36b Screw portion 40 Bucket 40a Opening 41 Opening 41a Projection 41b Partition plate 42 Thick part 42a Groove 43 Guide rib 43a Guide surface 44 Pin receiving part 45 Orthogonal surface 46 Groove 48a, 48b Internal space 49 Packing 51 Step part 52 Recess 53 Vertical groove 54a, 54b Step 5 Through-hole 58 Rotating shaft holding portion 60 Lid 60a Opening portion 60b Upper surface 60c Recess 61 Flange portion 62 Mounting arm 63 Rotating shaft 64 Hinge mechanism 67, 68 Reinforcement rib 70 Clip 70a Upper arm portion 70b Center portion 70c Lower arm portion 71 Cylindrical surface 72 Latching piece 72a Attachment portion 72b Claw portion 72c Tip portion 73, 74 Rib 75, 75a, 75b Slit 80 Inner cup 81 First container 81a Storage chamber 81b Open surface 81c, 81d Partition wall 82 Second container 82a Storage chamber 82b Open surface 82c, 82d Bulkhead 83 Bulkhead protrusion 84 Extraction hole 85 Notch 85b Lower end 86 Connection section 87 Connection rib 88 Gap 99 Sample 100 Blood collection bag 101 Parent bag 102 Inhalation distribution tube 103 Child bag 104 Outlet 105 Connection tube 120 Inner cup 121 First container 122 Second container 121a, 122a Storage chamber 123 Bulkhead protrusion 124 Extraction hole 125 Notch 125b Lower end 126 Connection part 127 Connection rib 129 Tape 140 Inner cup 141 First container 142 Second container 141a, 142a Storage chamber 141b 142b Opening surface 143 Bulkhead protrusion 144 Removal hole 145, 148 Notch 145b, 148b Lower end 147 Connecting rib 200 Inner cup 201-204 Storage chamber 205-207 Bulkhead

Claims (11)

Met inner cup which is accommodated in a plurality of buckets arranged swingably by a retaining pin of the swing rotor body,
The accommodation chamber partition wall is provided for accommodating the sample for dividing the interior into the inner cup is formed with a plurality, in the partition wall is formed to include a protrusion protruding above the opening of the inner cup,
Said partition wall has a notch made form as further extend below the said opening extending downward from the top of the protrusion,
The inner cup is characterized in that the cut direction is oblique to the axial direction of the holding pin in a top view . The partition is divided into one side and the other side in the swing axis direction by the incision, and the one side partition and the other side partition divided by having a notch width are in a non-contact state when viewed in the swing axis direction. And
2. The inner cup according to claim 1 , wherein the cut portions of the partition on the one side and the partition on the other side overlap when viewed from the vertical direction of the partition below the opening . The inner cup according to claim 2 , wherein a hole or an unevenness for extraction is provided in the protruding portion. 4. The extraction hole according to claim 3 , wherein the extraction hole is circular and is arranged adjacent to two in the axial direction of the holding pin, and the notch is formed between the two extraction holes. The inner cup described. The said extraction hole is circular, is arrange | positioned adjacent to the axial direction of the said holding pin, and the said notch is formed in the outer side of the said two extraction holes, The Claim 3 characterized by the above-mentioned. 4. The inner cup according to 4 . The inner cup according to any one of claims 1 to 5 , wherein a thin film is provided in the cut. The bucket has a plurality of storage chambers defined in the bucket by forming a flat reinforcing rib having a height that extends upward from the bottom inside and does not reach the opening of the bucket,
In the inner cup, a plurality of cup-shaped members having an outer shape corresponding to the shape of the inner wall of the storage chamber of the bucket are connected on the upper side, and a gap below the connected portion straddles the reinforcing rib. in to the inner cup as claimed in any one of claims 1 6, characterized in that mounted on the bucket. The bucket is partitioned two accommodating chambers of the inner and outer circumferential sides, said reinforcing ribs in top view according to claim 7, characterized in that it is arranged at a position which coincides with the axial direction of the retaining pin Inner cup. A drive shaft rotated by the drive means, a swing rotor body mounted on the drive shaft, a plurality of holding pins arranged on the swing rotor body, and swingable by being hooked on the holding pins. A centrifuge having a plurality of buckets,
A centrifuge using the inner cup according to any one of claims 1 to 8 .   In the inner cup accommodated in a plurality of buckets arranged to be swingable by the holding pins of the swing rotor body,
  The bucket has a plurality of storage chambers defined in the bucket by forming a flat reinforcing rib having a height that extends upward from the bottom inside and does not reach the opening of the bucket,
  In the inner cup, a plurality of cup-shaped members having an outer shape corresponding to the shape of the inner wall of the storage chamber of the bucket are connected on the upper side, and a gap below the connected portion straddles the reinforcing rib. The inner cup is attached to the bucket, and a partition is provided inside the inner cup, and the partition is cut.   11. The bucket according to claim 10, wherein the bucket is divided into two storage chambers on an inner peripheral side and an outer peripheral side, and the reinforcing rib is disposed at a position that coincides with an axial direction of the holding pin in a top view. Inner cup.

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