JP2017131463A - Centrifugal separation rotor and centrifugal separation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a centrifugal separation rotor and a centrifugal separation device to which an installation operator can attach a blood sampling circuit set in an easy posture.SOLUTION: A centrifugal separation rotor 78 of a centrifugal separation device 14 includes an upper rotor 82 constituting a rotor body. In the upper rotor 82, an axially penetrating top cavity 90, a mount groove 86 configured such that a blood separation chamber 18 can be mounted from above, and a slit 96 which communicates the top cavity 90 and an outer peripheral part of the upper rotor 82, penetrates axially, and can be inserted through a liquid transfer line 17.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a centrifuge rotor and a centrifuge.

  In recent blood donations, component blood collection (apheresis) with a light burden on a donor's body is performed in addition to whole blood collection for collecting whole blood from a donor. Component blood collection is a blood collection method that uses a component blood collection system (apheresis system), collects only specific blood components from whole blood, and returns the remaining components back to the body of the donor.

  Patent Document 1 discloses a component blood collection system that collects platelets by centrifuging whole blood taken from a blood donor. This component blood collection system includes a blood collection circuit set that forms a circuit through which blood to be processed or a blood component flows, and a centrifugal separator to which the blood collection circuit set is attached. The blood collection circuit set has a channel set including a strip-shaped blood separation chamber into which whole blood is introduced and a plurality of introduction or extraction tubes connected to the blood separation chamber.

  In use, the channel set is attached to the centrifuge rotor. The rotor is disposed vertically in the lower part in the centrifugal separator and has a mounting groove for mounting a blood separation chamber on the upper surface of the rotor. The rotor is further provided with a cavity that communicates an upper opening formed on the upper surface of the rotor and a side opening formed on the outer periphery of the rotor. In mounting the channel set on the rotor, the blood separation chamber to which a plurality of tubes are connected is inserted from the side opening of the rotor into the cavity, and the blood separation chamber is drawn upward from the upper opening, so that the blood separation chamber Install in the mounting groove.

Special table 2013-514863 gazette

  The present invention has been made in connection with the above-described prior art, and an object thereof is to provide a centrifuge rotor and a centrifuge device to which a blood collection circuit set can be attached in an easy posture for an installation operator. .

  To achieve the above object, the present invention applies centrifugal force to the blood separation chamber of a blood collection circuit set including a blood separation chamber and a liquid feeding line including at least one tube connected to the blood separation chamber. A centrifuge rotor configured to be rotated about a vertical axis, and a through-hole surrounded by the rotor body and penetrating in the axial direction of the rotor body; The liquid feed line is provided in the rotor body and communicates with a mounting groove configured to allow the blood separation chamber to be mounted from above, the through hole and the outer periphery of the rotor body, and penetrates in the axial direction. And a slit that can be inserted therethrough.

  According to the centrifuge rotor of the present invention adopting the above-described configuration, when a part of the blood collection circuit set is attached to the centrifuge rotor, the blood separation chamber is mounted from above the rotor body and is provided in the rotor body. The liquid feed line can be guided to the through hole of the rotor body through the slit. For this reason, the attachment operator can attach the blood collection circuit set in an easy posture. Therefore, the work burden on the installation worker can be reduced.

  The above centrifugal rotor further includes a lower rotor that is rotatable relative to the upper rotor coaxially with the upper rotor formed by the rotor body, and the lower rotor communicates with the through hole. In addition, a lower cavity that opens at the outer peripheral portion of the lower rotor and can communicate with the slit may be provided.

  With this configuration, when the blood collection circuit set is attached to the centrifuge rotor, by placing the slit and the lower cavity in communication, the liquid supply line is inserted into the through hole and the lower cavity via the slit and arranged. can do. Thereby, the attachment operator can attach a part of blood collection circuit set with a comfortable attitude | position with respect to the rotor for centrifugation which has an upper rotor and a lower rotor.

  In the above centrifugal rotor, the mounting groove has a first end portion constituting one end side in the extending direction of the mounting groove and a second end portion constituting the other end side in the extending direction. And it has extended so that the circumference | surroundings of the said through-hole may be enclosed in the range of less than one round, and the said slit may be provided between the said 1st end part and the said 2nd end part.

  With this configuration, since the slit does not cross the mounting groove, it does not affect the holding of the blood separation chamber by the mounting groove.

  In the above-described centrifuge rotor, a lid member capable of opening and closing the slit may be disposed in the rotor body.

  With this configuration, by closing the slit with the lid member when the rotor rotates, it is possible to suitably prevent the liquid supply line from popping out due to centrifugal force.

  Further, the present invention is a centrifugal separator configured to be mounted with a blood collection circuit set including a blood separation chamber and a liquid feeding line including at least one tube connected to the blood separation chamber, The blood separation chamber and the liquid feeding line can be attached, and a rotor for applying a centrifugal force to the blood separation chamber is provided, and the rotor is the above-described centrifugal separation rotor.

  According to the centrifuge rotor and centrifuge of the present invention, the blood collection circuit set can be attached in an easy posture for the installation operator.

It is the schematic of a blood collection system. It is a perspective view of the rotor for centrifugation concerning the embodiment of the present invention. It is a figure explaining the attachment method of the channel set to the rotor for centrifugation shown in FIG. It is typical sectional drawing which shows the state by which the channel set was attached to the centrifuge rotor shown in FIG.

  Hereinafter, preferred embodiments of a centrifuge rotor and a centrifuge according to the present invention will be described with reference to the accompanying drawings.

  In FIG. 1, a blood collection system 10 collects a specific blood component (in this embodiment, platelets) by continuously taking out blood (whole blood) from a donor and centrifuging it outside the body, and the remaining blood. It is configured as a blood apheresis system that returns components to the donor. The blood collection system 10 can also be applied to a system that collects whole blood by performing appropriate modifications.

  First, an outline of the blood collection system 10 shown in FIG. 1 will be described. The blood collection system 10 includes a blood collection circuit set 12 for storing and flowing blood components, and a centrifugal separator 14 that applies centrifugal force to the blood collection circuit set 12. The blood collection circuit set 12 has a blood separation chamber 18 as a primary separator that introduces whole blood taken from a blood donor and centrifuges the whole blood into a plurality of blood components.

  The centrifuge 14 has a centrifuge rotor 78 (hereinafter referred to as “rotor 78”) for applying a centrifugal force to the blood separation chamber 18. A mounting groove 86 extending in the circumferential direction around the rotational axis a of the rotor 78 is formed on the upper surface 82 a of the rotor 78, and the blood separation chamber 18 can be mounted in the mounting groove 86. Hereinafter, the blood collection circuit set 12 and the centrifugal separator 14 will be described in detail.

  The blood collection circuit set 12 is made disposable for each use in order to prevent contamination and hygiene. The blood collection circuit set 12 is formed in a predetermined path with a plurality of bags 16 including a blood separation chamber 18, a liquid feeding line 17 connected to the blood separation chamber 18, a plurality of tubes 20 connected to the plurality of bags 16. A cassette 22 in which a plurality of tubes 20 are held or connected, an anticoagulant introduction part 24, and a blood collection / return part 26 having a puncture needle 25 are provided.

  The plurality of bags 16 include a blood separation chamber 18, an auxiliary bag 28, a PPP bag 30, a storage solution bag 32, and a platelet bag 34.

  The blood separation chamber 18 is formed in a belt-like bag and is configured to be mounted in a mounting groove 86 provided in the rotor 78 of the centrifugal separator 14. The blood separation chamber 18 is a soft bag having a first chamber 40 (blood separation unit) to which the donor's whole blood is supplied, and can be easily folded, folded or rolled. is there. The first chamber 40 extends from one end 18a of the blood separation chamber 18 to the other end 18b. During the centrifugation process, the whole blood introduced into the first chamber 40 is centrifuged by centrifugal force while flowing from the one end 18a to the other end 18b.

  An introduction tube 46 is connected to one end 18 a of the blood separation chamber 18. The introduction tube 46 is connected to the blood collection / return unit 26 via the cassette 22. The blood collection / return unit 26 is connected to a sampling unit 49 that collects initial blood from a blood donor. The blood collection / return unit 26 is connected to the anticoagulant introduction unit 24 via the cassette 22.

  The anticoagulant introduction part 24 is configured to be connectable to an ACD solution storage bag (not shown). When the blood collection circuit set 12 is used, as an initial operation, an ACD liquid as an anticoagulant is supplied to the blood separation chamber 18 from the ACD liquid storage bag via the anticoagulant introduction part 24, thereby coagulating whole blood. Is suppressed.

  In the component blood collection using the blood collection circuit set 12, the whole blood taken out from the blood donor through the puncture needle 25 is stored in the blood separation chamber 18 attached to the attachment groove 86 from the one end 18a to which the introduction tube 46 is connected. It flows into the first chamber 40. The inflowing whole blood flows toward the other end 18 b along the extending direction of the blood separation chamber 18. The whole blood is subjected to centrifugal force during rotation of the rotor 78, so that the whole blood is centrifuged. In the case of the present embodiment, whole blood is centrifuged by plasma (light platelet-poor plasma: PPP) which is a light specific gravity component (supernatant component), concentrated red blood cells which are heavy specific gravity components (precipitation components), and medium specific gravity components. And buffy coat (BC).

  First to third outlet tubes 48 a to 48 c are connected to the other end portion 18 b of the blood separation chamber 18.

  The first outlet tube 48 a is connected to a reservoir 50 provided in the cassette 22. The concentrated erythrocytes generated by the centrifugation in the first chamber 40 are guided to the reservoir 50 by the first outlet tube 48a.

  The second lead-out tube 48 b is connected to the tube 52 connected to the PPP bag 30 and the reservoir 50 provided in the cassette 22 via the cassette 22. Plasma generated in the first chamber 40 by centrifugation of whole blood is guided to the cassette 22 via the second outlet tube 48b, and part of the plasma is introduced to the PPP bag 30 via the tube 52. The remaining plasma is introduced into the reservoir 50. The blood components (concentrated red blood cells and plasma) stored in the reservoir 50 are guided to the blood collection / return unit 26 after the centrifugal separation process and returned to the blood donor via the puncture needle 25.

  The third outlet tube 48 c is connected to a concentrator 56 as a secondary separator having the second chamber 54. The buffy coat generated in the first chamber 40 by the centrifugation of the whole blood is introduced into the concentrator 56 through the third lead-out tube 48c. The buffy coat contains a white blood cell component and platelet-rich plasma (a platelet-containing component).

  The concentrator 56 introduces the buffy coat from the blood separation chamber 18 into the second chamber 54, and further centrifuges the buffy coat by the centrifugal force accompanying the rotation of the rotor 78. The concentrator 56 is formed in a plurality of stepped conical shapes, and is attached to the rotor 78, the conical top side is disposed on the side far from the centrifugal center, and the conical bottom side is close to the centrifugal center. Placed on the side.

  In the concentrator 56, the buffy coat is separated into white blood cells that are heavy specific gravity components and platelets that are light specific gravity components (specifically, platelet-containing components including plasma and platelets). White blood cells are captured by a plurality of steps formed in the concentrator 56. The platelets flow out to the relay tube 58 connected to the outlet (bottom side) of the concentrator 56 and are introduced into the platelet bag 34 through the cassette 22 and the tube 60. In addition, the platelet storage solution (PAS solution) is supplied to the platelet bag 34 from the storage solution bag 32 through the tube 62, the cassette 22, and the tube 60 as the platelets are introduced.

  The introduction tube 46, the first lead-out tube 48a, the second lead-out tube 48b, and the relay tube 58 are bundled by a binding sheath 64. In the present embodiment, the liquid feeding line 17 includes an introduction tube 46, first to third outlet tubes 48a to 48c, a concentrator 56, and a relay tube 58. Hereinafter, a portion of the blood collection circuit set 12 constituted by the blood separation chamber 18 and the liquid feeding line 17 is referred to as a “channel set 36”.

  The centrifuge 14 is a device that is repeatedly used in component blood collection, and is provided, for example, in a medical facility or a blood collection vehicle. The centrifugal separator 14 includes a box-shaped device main body 70 formed relatively long in the height direction, and a centrifugal unit 72 accommodated in the device main body 70.

  The apparatus main body 70 has a function of accommodating a plurality of bags 16 of the blood collection circuit set 12 inside or holding the bag 16 and controlling centrifugation of blood taken into the blood collection circuit set 12. The apparatus main body 70 accommodates a display operation device 74 that performs operations and displays when blood is centrifuged, an attachment portion 76 that is configured to attach the cassette 22 of the blood collection circuit set 12, and a centrifuge unit 72. The housing part 79 and the door 81 which can open and close the front side of the housing part 79 are provided.

  The attachment portion 76 of the apparatus main body 70 is disposed on the upper side of the apparatus main body 70 and is configured to fit and hold the cassette 22. Further, although not shown in detail, the mounting portion 76 includes a plurality of pumps, a plurality of clamps, and a plurality of sensors. With the attachment of the cassette 22 to the attachment portion 76, these pumps, clamps, and sensors are arranged on the path formed by the tube 20 and the cassette 22 of the blood collection circuit set 12.

  The centrifuge unit 72 includes a rotor 78 that can rotate around a vertical axis, and a drive unit 80 (motor) that rotationally drives the rotor 78. The rotor 78 includes an upper rotor 82 (rotor main body) configured to be mounted with the blood separation chamber 18 and a lower rotor 84 that can rotate coaxially with the upper rotor 82. The upper rotor 82 is rotatable relative to the lower rotor 84, and a mounting groove 86 for mounting the blood separation chamber 18 is provided on the upper surface 82a.

  The lower rotor 84 is connected to the output shaft of the drive unit 80. In order to rotate the upper rotor 82 at twice the speed of the lower rotor 84, the upper rotor 82 and the lower rotor 84 are connected by a pinion assembly 85. The pinion assembly 85 is engaged with, for example, an intermediate gear supported by the lower rotor 84 so as to be rotatable about an axis perpendicular to the rotation axis a of the rotor 78, and a lower portion of the intermediate gear provided at a non-rotation part. It has a lower gear and an upper gear provided on the upper rotor 82 around the rotation axis a.

  Such a pinion assembly 85 causes the upper rotor 82 to rotate twice each time the lower rotor 84 makes one rotation. As a result, even if the blood separation chamber 18 is continuously rotated by the rotor 78 for centrifugation, the blood separation chamber 18 and a plurality of tubes (such as the introduction tube 46) connected to the blood separation chamber 18 The twist between them falls within a predetermined range. Therefore, a rotary seal between the blood separation chamber 18 and the plurality of tubes is unnecessary.

  The means for rotating the upper rotor 82 at a speed twice that of the lower rotor 84 is not limited to the pinion assembly 85 described above, and may have other configurations. For example, the upper rotor 82 and the lower rotor 84 may be rotated by separate motors to rotate the upper rotor 82 at twice the speed of the lower rotor 84.

  As shown in FIG. 2, the mounting groove 86 provided on the upper surface 82 a of the upper rotor 82 is formed in a substantially annular shape so as to extend around the rotation axis a of the rotor 78. A substantially annular center of the mounting groove 86 coincides with the rotational axis a of the rotor 78. The mounting groove 86 is a groove having a depth in the vertical direction and opening upward.

  The mounting groove 86 is not a complete ring that goes around the rotation axis a, but is formed in a C shape with a part of a circle cut out. Therefore, the mounting groove 86 has a first end portion 87 constituting one end side in the circumferential direction and a second end portion 88 constituting the other end side in the circumferential direction. Although not shown, a fixing portion for mounting and fixing the concentrator 56 is provided on the upper surface 82 a of the upper rotor 82.

  Further, the upper rotor 82 is provided with an upper cavity 90 (through hole) penetrating in the vertical direction and a plurality of slit grooves (first to third slit grooves 92a to 92c). A holder 91 for holding the binding sheath 64 (see FIG. 1) is attached to the upper inner surface of the upper rotor 82. The holder 91 is disposed in the upper cavity 90. The first slit groove 92a communicates the first end portion 87 and the upper cavity 90, and when the blood separation chamber 18 is mounted, the introduction tube 46 (see FIG. 1) connected to the blood separation chamber 18 is inserted. Is done.

  The second slit groove 92 b and the third slit groove 92 c communicate the second end portion 88 and the upper cavity 90. The second slit groove 92b is inserted with a third outlet tube 48c (see FIG. 1) connected to the blood separation chamber 18 when the blood separation chamber 18 is mounted. The third slit groove 92c is inserted with the first lead-out tube 48a and the second lead-out tube 48b (see FIG. 1) connected to the blood separation chamber 18 when the blood separation chamber 18 is mounted.

  As shown in FIG. 2, the upper rotor 82 further has a slit 96 that communicates with the upper cavity 90 and the outer periphery of the upper rotor 82 and penetrates in the axial direction. In the present embodiment, the slit 96 penetrates between the upper cavity 90 and the outer peripheral portion of the upper rotor 82 in the radial direction, and the width gradually decreases toward the rotation axis a side. The width of the slit 96 refers to the distance between the opposing walls 96 a and 96 b forming the slit 96. The width of the slit 96 may be substantially constant in the radial direction of the upper rotor 82.

  The slit 96 is formed in a size that allows the liquid feed line 17 (see FIG. 1) to be inserted. In the present embodiment, the width of the slit 96 (the width of the narrowest portion) is set to be substantially the same as or slightly larger than the thickness (outer diameter) of the bundling sheath 64. Thereby, when attaching the channel set 36 to the rotor 78, the binding sheath 64 (liquid feeding line 17) can be passed through the slit 96 from the outer periphery of the upper rotor 82 to the upper cavity 90 without any trouble.

  In the present embodiment, the slit 96 is provided between the first end portion 87 and the second end portion 88 of the mounting groove 86. That is, the slit 96 is formed so as to cross between the first end portion 87 and the second end portion 88 and does not communicate with the mounting groove 86. In the modification, the slit 96 may be formed so as to cross the mounting groove 86. In this case, the slit 96 communicates with the mounting groove 86.

  The upper rotor 82 is further provided with a lid member 97 that can open and close the slit 96. In the present embodiment, the lid member 97 is disposed on the outer peripheral portion of the upper rotor 82 so as to be slidable in the circumferential direction. In FIG. 2, the lid member 97 is open. By sliding the lid member 97 in the arrow A direction from the state of FIG. 2, the lid member 97 is closed and the outer diameter side of the slit 96 is closed.

  The lid member 97 may be rotatably supported on the outer peripheral portion of the upper rotor 82 via a hinge portion. A lock portion that maintains the closed state of the lid member 97 may be further provided.

  The lower rotor 84 is provided with a lower cavity 94 that communicates with an upper cavity 90 formed at the center of the upper rotor 82 and opens at the outer peripheral surface of the lower rotor 84. Specifically, the lower cavity 94 includes a vertical hole portion 94a that extends vertically below the upper cavity 90, and a side hole portion 94b that communicates the lower portion of the vertical hole portion 94a with the outer peripheral surface of the lower rotor 84. Have

  The lower cavity 94 can communicate with a slit 96 provided in the upper rotor 82. Specifically, the lower rotor 84 is provided with a notch 98 that communicates the vertical hole portion 94a and the outer peripheral portion of the lower rotor 84 and the side hole portion 94b. Can communicate with each other through the notch 98.

  The width of the notch 98 (the width of the narrowest portion) is set to be substantially the same as or slightly larger than the thickness (outer diameter) of the binding sheath 64. Thereby, when attaching the channel set 36 to the rotor 78, the binding sheath 64 can be passed from the outer peripheral portion of the lower rotor 84 to the upper cavity 90 through the notch portion 98 without any trouble.

  In FIG. 2, the slit 96 and the notch 98 are displaced in the circumferential direction, and the slit 96 and the lower cavity 94 are not in communication. On the other hand, when the upper rotor 82 and the lower rotor 84 are rotated relative to each other about the rotation axis a so that the circumferential positions of the slit 96 and the notch 98 coincide with each other, the slit 96 and the lower cavity 94 are notched. Communication is established via the section 98.

  Further, a curved tube support portion 100 is attached to the lower rotor 84. The tube support portion 100 is a member for supporting a part of the liquid feeding line 17 (a plurality of tubes bundled by the bundling sheath 64), the lower end is fixed to the outer peripheral portion of the lower rotor 84, and the upper rotor 82. It extends upward to a higher position.

  More specifically, the tube support portion 100 extends outward from the fixing portion with respect to the lower rotor 84 in the radial direction of the rotor 78, extends sideways of the upper rotor 82, and extends upward. Curved so as to approach the rotational axis a above 82. The tube support part 100 is not in contact with the upper rotor 82. In addition, the tube support portion 100 is provided with a plurality of hook-like hook portions 102 at intervals in the vertical direction.

  Next, operations and effects of the rotor 78 and the centrifugal separator 14 according to this embodiment configured as described above will be described.

  A blood collection circuit set 12 is attached to the centrifugal separator 14 as preparation (setup) for collecting component blood from a blood donor using the blood collection system 10 shown in FIG. In mounting the blood collection circuit set 12 to the centrifugal separator 14, specifically, the cassette 22 is attached to the mounting portion 76, and a bag other than the blood separation chamber 18 among the plurality of bags 16 is appropriately disposed in the centrifugal separator 14. The channel set 36 is attached to the rotor 78.

  When attaching the channel set 36 to the rotor 78, the installation operator opens the door 81 of the apparatus main body 70 to access the rotor 78. Then, as shown in FIG. 3, the attachment operator lowers the blood separation chamber 18 developed in a C shape from the upper side of the upper rotor 82, inserts the blood separation chamber 18 into the attachment groove 86, and attaches it. Further, at the time of mounting, the introduction tube 46 and the first to third outlet tubes 48a to 48c are inserted into the first to third slit grooves 92a to 92c.

  Next, the installation operator rotates the upper rotor 82 and the lower rotor 84 to bring the slit 96 provided in the upper rotor 82 and the notch 98 provided in the lower rotor 84 to the own side. In addition, the phase alignment is performed so that the circumferential positions of the slit 96 and the notch 98 coincide with each other. Thereby, the slit 96 and the notch 98 communicate with each other, and the slit 96 and the lower cavity 94 communicate with each other via the notch 98. Note that when the door 81 is opened and the slit 96 and the notch 98 are directed toward the mounting operator and are in the same circumferential position, the above-described phase alignment is not necessary.

  Next, the attaching operator connects the liquid supply line 17 (a plurality of tubes such as the bundling sheath 64 and the introduction tube 46 held thereby) connected to the blood separation chamber 18 to the slit 96 and the notch 98. To the upper cavity 90 and the lower cavity 94. At this time, the vicinity of the upper end of the binding sheath 64 is fixed to the holder 91 provided in the upper rotor 82. As a result, as shown in FIG. 4, the liquid feeding line 17 is inserted into the upper cavity 90 and the lower cavity 94.

  Next, the attachment operator attaches and fixes the concentrator 56 (see FIG. 1) to a fixing portion (not shown) provided in the upper rotor 82. Further, as shown in FIG. 4, the attaching operator lifts the binding sheath 64 above the rotor 78 while hooking the binding sheath 64 that has come out of the lower opening 95 on the hooking portion 102 of the tube support portion 100. As a result, as shown in FIG. 4, the liquid feeding line 17 connected to the blood separation chamber 18 is inserted into the upper cavity 90 and the lower cavity 94 of the rotor 78 and pulled out from the lower opening 95, and then upward from the lower opening 95. It is held by the rotor 78 in the form of heading. Although not shown, the binding sheath 64 (liquid feeding line 17) is drawn to the outside at the upper part of the apparatus main body 70.

  In this case, according to the rotor 78 according to the present embodiment, when part of the blood collection circuit set 12 (channel set 36) is attached to the rotor 78, the blood separation chamber 18 is attached from above the upper rotor 82 (rotor body). At the same time, the liquid feed line 17 can be guided to the upper cavity 90 (through hole) of the upper rotor 82 through the slit 96 provided in the upper rotor 82. For this reason, the attachment operator can attach the blood collection circuit set 12 in an easy posture. Therefore, the work burden on the installation worker can be reduced.

  In contrast to this embodiment, in the above-described prior art, the slits 96 are not provided in the upper rotor 82, and thus the above-described operation and effect of this embodiment cannot be obtained. That is, in the case where the slit 96 is not provided, when attaching the channel set 36 to the rotor 78, the attaching operator first opens the lower opening 95 in a state where the blood separation chamber 18 is bent (or rolled) to be small. Through which the blood separation chamber 18 is inserted. At this time, since the lower opening 95 is located in the lower part of the centrifugal separator 14, the installation operator needs to make the body a considerably low posture. Next, the attachment operator moves the blood separation chamber 18 upward in the upper cavity 90 while inserting the hand holding the blood separation chamber 18 into the lower cavity 94, and pulls out the blood separation chamber 18 from the upper opening 93. . Then, the attachment operator expands the blood separation chamber 18 drawn out in a bent state into an annular shape and inserts it into the mounting groove 86. As described above, when the slit 96 is not provided, the attaching operator needs to insert the blood separation chamber 18 through the lower opening 95, so that the body must be in a considerably low posture. For this reason, the channel set 36 cannot be attached in an easy posture.

  According to this embodiment, when the blood collection circuit set 12 is attached to the rotor 78, the slit 96 and the lower cavity 94 are in communication with each other, so that the blood is sent to the upper cavity 90 and the lower cavity 94 via the slit 96. A liquid line 17 can be inserted and placed. Thereby, the attachment operator can attach a part of the blood collection circuit set 12 to the rotor 78 having the upper rotor 82 and the lower rotor 84 in an easy posture.

  According to the present embodiment, the mounting groove 86 extends so as to surround the periphery of the upper cavity 90 within a range of less than one round, and the slit 96 is between the first end portion 87 and the second end portion 88. Is provided. With this configuration, since the slit 96 does not cross the mounting groove 86, the holding of the blood separation chamber 18 by the mounting groove 86 is not affected.

  According to the present embodiment, the upper rotor 82 is provided with the lid member 97 that can open and close the slit 96. With this configuration, by closing the slit 96 with the lid member 97 when the rotor rotates, it is possible to suitably prevent the liquid feeding line 17 from jumping out due to centrifugal force.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 12 ... Blood collection circuit set 14 ... Centrifugal device 17 ... Liquid feeding line 18 ... Blood separation chamber 78 ... Centrifugal rotor 82 ... Upper rotor 84 ... Lower rotor 86 ... Mounting groove 87 ... 1st end part 88 ... 2nd end Part 90 ... Upper cavity 94 ... Lower cavity 96 ... Slit 97 ... Lid member

Claims (5)

A centrifuge rotor configured to apply a centrifugal force to the blood separation chamber of a blood collection circuit set including a blood separation chamber and a liquid feeding line including at least one tube connected to the blood separation chamber. And
A rotor body that is driven to rotate about a vertical axis;
A through hole surrounded by the rotor body and penetrating in the axial direction of the rotor body;
A mounting groove provided in the rotor body and configured so that the blood separation chamber can be mounted from above;
A slit that allows the through hole and the outer peripheral portion of the rotor body to communicate with each other and penetrates in the axial direction, and allows the liquid feeding line to be inserted therethrough.
A centrifugal rotor characterized by that. The centrifuge rotor according to claim 1,
Below the upper rotor constituted by the rotor body, further comprises a lower rotor that can rotate relative to the upper rotor coaxially,
The lower rotor is provided with a lower cavity that communicates with the through-hole and opens at the outer periphery of the lower rotor, and is capable of communicating with the slit.
A centrifugal rotor characterized by that. The centrifuge rotor according to claim 1 or 2,
The mounting groove has a first end portion that constitutes one end side in the extending direction of the mounting groove and a second end portion that constitutes the other end side in the extending direction, and around the through hole. It extends so as to enclose in less than one round,
The slit is provided between the first end and the second end.
A centrifugal rotor characterized by that. In the rotor for centrifugation according to any one of claims 1 to 3,
The rotor body is provided with a lid member capable of opening and closing the slit.
A centrifugal rotor characterized by that. A centrifugal separator configured to be mounted with a blood collection circuit set including a blood separation chamber and a liquid feeding line including at least one tube connected to the blood separation chamber,
The blood separation chamber and the liquid supply line can be attached, and includes a rotor that applies centrifugal force to the blood separation chamber,
The rotor is the centrifuge rotor according to any one of claims 1 to 4.
A centrifugal separator characterized by that.

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