EP0109652A2 - Centrifugeuse - Google Patents

Centrifugeuse Download PDF

Info

Publication number
EP0109652A2
EP0109652A2 EP83111445A EP83111445A EP0109652A2 EP 0109652 A2 EP0109652 A2 EP 0109652A2 EP 83111445 A EP83111445 A EP 83111445A EP 83111445 A EP83111445 A EP 83111445A EP 0109652 A2 EP0109652 A2 EP 0109652A2
Authority
EP
European Patent Office
Prior art keywords
chamber
centrifuge
shaft
drive
pulley
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP83111445A
Other languages
German (de)
English (en)
Other versions
EP0109652A3 (en
EP0109652B1 (fr
Inventor
Houshang Dr. Lolachi
Bernd Dr. Mathieu
Wolfram Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fresenius SE and Co KGaA
Original Assignee
Fresenius SE and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fresenius SE and Co KGaA filed Critical Fresenius SE and Co KGaA
Priority to AT83111445T priority Critical patent/ATE34676T1/de
Publication of EP0109652A2 publication Critical patent/EP0109652A2/fr
Publication of EP0109652A3 publication Critical patent/EP0109652A3/de
Application granted granted Critical
Publication of EP0109652B1 publication Critical patent/EP0109652B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0442—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/08—Arrangement or disposition of transmission gearing ; Couplings; Brakes

Definitions

  • the invention relates to a centrifuge according to the preamble of claim 1.
  • the invention relates to a flow-through centrifuge in which materials are to be centrifuged in the flow, for example when processing blood or plasma processing.
  • a problem with flow centrifuges is the connection between a stationary and stationary feed and discharge point with the rotating centrifuge chamber.
  • the relative movement of the two connection points occurring here causes the connection lines to twist.
  • rotating seals or rotating couplings are therefore used at the connection points.
  • Such rotary seals are expensive to manufacture and normally sealing material is removed under the influence of the rotation, which can lead to leaks.
  • the use of rotary seals is problematic, particularly when processing blood, since contamination of the environment and the processed blood is possible in the event of errors and leaks.
  • the sensitive components of the blood, platelets in particular are injured by the high friction or turbulence caused by a rotating rotary seal.
  • a hollow cylinder rotating with it is mounted on this shaft, which has a gear meshing with the fixed ring gear which is offset laterally to the axis of rotation and which rolls on the fixed ring gear when the hollow cylinder rotates.
  • a laterally offset auxiliary shaft is also attached to the hollow cylinder, which also carries a gear on its underside and top, the lower gear meshing with the first gear and also causing it to rotate.
  • the upper gear on the auxiliary shaft transmits its rotational movement to a drive gear for a centrifuge chamber, for example, which is mounted concentrically to the first shaft.
  • the transmission ratio of the gear arrangement described is chosen so that the hollow cylinder moves at half the angular velocity and the same direction of rotation in comparison to the centrifuge chamber.
  • a disadvantage of the known arrangement is the use of gearwheels in general. This requires a very precise and therefore complex and expensive manufacture of the centrifuge. In addition gears need to be serviced, for example lubricated, and produce a relatively high running noise.
  • Another disadvantage is the tapping of the centrifuge chamber drive via the fixed ring gear. By rolling a gear on this fixed gear rim, the direction of rotation of the gear is reversed compared to the moving hollow cylinder. In order to achieve the required direction of rotation in the direction of rotation of the hollow cylinder, a gear wheel is therefore only required to reverse the direction of rotation, which also contributes to the high volume level, the maintenance intensity and the requirement for precise and therefore expensive production.
  • the drive movement for the centrifuge chamber is also supplied in the opposite direction of rotation and must be converted into the desired correct direction of rotation, corresponding to twice the angular velocity of the hollow cylinder, by using auxiliary shafts with auxiliary pulleys.
  • the structure is generally complex and expensive and can lead to quite large and heavy rotating parts.
  • the resulting high centrifugal forces have to be mastered, which, due to the large loop of the inflow and outflow line that is required, place a great strain on them.
  • twist or twist the supply line this is in the above
  • the object of the invention is to provide a generic centrifuge without reversing the direction of rotation, the rotating parts of which are simpler and smaller, and which is therefore less expensive.
  • a drive arrangement is proposed in which the drive for the centrifuge chamber and for the rotatable line driver, which rotates the line loop at half the angular velocity in the same direction of rotation as the centrifuge chamber, takes place in parallel.
  • the line driver can be driven by a first shaft and the centrifuge chamber via a chamber drive shaft, both the first shaft and the chamber drive shaft being connected to the output shaft of a drive motor attached to the support frame in a motion-transmitting manner.
  • the first shaft is advantageously designed as a hollow shaft for driving the line driver, through which the chamber drive shaft extends in a rotatably mounted manner.
  • the first shaft for driving the line driver and the chamber drive shaft can be driven directly by the motor output shaft in the same desired direction of rotation, the speed ratio of 2: 1 necessary for the disentangling being advantageously already set here by the appropriate choice of the transmission ratio.
  • a first embodiment of a centrifuge which consists essentially of a drive motor 1 on a support frame 2, a rotating frame 3, which is rotatably mounted on the supporting frame 2, and a centrifuge chamber 4 mounted on the rotating frame 3.
  • the drive motor carries on its vertically standing output shaft 5 two spaced pulleys 6 and 7, from which drive belts 8, 9 lead to further pulleys 10, 11.
  • the pulley 11 is seated at the lower end of a hollow shaft 12 which is supported and held in a bushing 13 by means of two bearings 14, 15.
  • the socket 13 is detachably connected to the support frame via screw connections 16, 17.
  • a flange piece is placed on the upper part of the hollow shaft 12, with which a lower support plate 18 of the rotating frame 3 is detachably connected via screw connections 19, 20.
  • the drive for the rotating frame 3 thus works as follows: when the drive motor 1 is switched on, the drive shaft 5 and thus the pulley 6 rotate at a certain angular velocity.
  • the pulley 11 on the hollow shaft 12 has twice the diameter of the pulley 6, so that the hollow shaft rotates through the transmission of motion with the aid of the drive belt 8 at half the angular speed compared to the rotary movement of the drive motor 1. Due to the fixed connection of the rotating frame 3 to the hollow shaft 12, the rotating frame 3 thus also rotates at half the angular speed in comparison to the drive motor.
  • the pulley 7 has the same diameter as a chamber connected to drive shaft 21 pulley 1 0th
  • the chamber drive shaft 21 projects through the hollow shaft 12 and is held in this by bearings 22, 23.
  • This pulley 24 is connected via a drive belt 25 to a pulley 26, which is on the underside a vertically standing deflection shaft 27 is attached.
  • the deflection shaft is rotatably supported in bearings 29, 30 between the lower support plate 18 and an upper support plate 28 of the rotating frame 3, the upper and lower support plates 28, 18 being held and mounted at a distance by struts 31, 32.
  • the deflection shaft 27 is laterally offset from the axis of rotation of the hollow shaft 12 and the chamber drive shaft 21 in the outer region of the upper or lower support plate 28, 18.
  • the rotary movement is thus deflected from the central axis of rotation toward the side of the rotating frame 3.
  • the rotary movement is again directed to the central axis of rotation of the rotating frame 3 with the aid of a pulley 33 arranged on the upper side of the deflecting shaft 27 and a drive belt 34 running thereon.
  • the drive belt 34 lies there on a pulley 35 which is attached to the lower end of a vertically standing hollow shaft 36.
  • the hollow shaft 36 is supported by bearings 37, 38 in a bushing 39 which is detachably connected to the upper support plate 28 by screw connections 40, 41.
  • the hollow shaft 36 carries a flange 42 above the upper support plate 28 and thus outside the region of the rotating frame 3, on which the annular centrifuge chamber 4 is placed, the hollow shaft 36 with its upper end 43 protruding through a central recess in the centrifuge chamber 4.
  • the upper end 43 of the hollow shaft 36 carries a thread 44, onto which a union nut 45 is screwed for fixing the centrifuge chamber 4.
  • a funnel-shaped ring part 46 with outwardly bent edge regions is inserted.
  • the drive for the centrifuge chamber 4 works as follows: When the drive motor 1 is switched on, the motor output shaft 5 and thus also the pulley 7 are driven at a specific speed. Since the pulleys 7, 10 have the same diameter, the Chamber drive shaft 21 driven at the same speed. The pulleys 24, 35 have the same diameter, and the pulleys 26, 33 have a different diameter, but also the same diameter. Thus, the deflection shaft 27 only deflects the rotary movement offset to the side, so that a free space remains between the pulley 24 and the funnel-shaped ring part 46, but the speed occurring on the hollow shaft 36 is not changed by this arrangement compared to the motor speed. The hollow shaft 36 and thus the centrifuge chamber 4 thus runs at the same speed as the drive motor 1 and at twice the speed in comparison to the .. speed of the rotating frame 3 (as explained above) ..
  • a flexible line 47 in which an inflow and outflow line or an entire bundle of inflow and outflow lines can be contained, is inserted from below into the hollow shaft 36 and is firmly connected to a connection point 48 on the centrifuge chamber.
  • the line 47 is looped upwards around the centrifuge chamber 4 to a fixed connection point 49 .
  • On the upper support plate 28 a diagonally upward line support 50 is attached, which ends in an openable ring 51 with a snap lock, in which the line 47 is inserted.
  • the centrifuge described so far with its essential parts and the function of the drives for the rotating frame 3 and the centrifuge chamber 4 has the following function:
  • the medium to be centrifuged is from the fixed connection point, which can be attached to a container, for example, via the line 47 supplied with the speed of the drive motor 1 rotating centrifuge chamber 4.
  • line 47 can contain both an inflow and an outflow line.
  • the rotating frame 3 is moved at half the speed in comparison to the centrifuge chamber 4, so that the loop of the line 47, which is connected to the rotating frame 3 via the line support 50, is moved at half the speed around the centrifuge chamber 4.
  • this has the known effect that there is no twisting or twisting of the line 47.
  • the line 47 can move freely in the ring 51.
  • a major advantage of the embodiment shown is seen in its simple structure and the possibility of easy and quick access to all individual parts. Maintenance and replacement of parts can therefore be carried out very quickly and easily.
  • the motor 1 is easily detachable and replaceable from the support frame 2 with the aid of screw connections 52, 53.
  • the entire rotating frame 3 can be separated from the support frame 2 in a similarly simple manner by loosening the screw connections 16, 17. Furthermore, the unit consisting of the bushing 13, the hollow shaft 12 and the chamber drive shaft 21 can be easily taken apart.
  • the bearings 14, 15 between the bushing 13 and the hollow shaft 12, and the bearings 22, 23 between the hollow shaft 12 and the chamber drive shaft 21 are each held from the outside via screw connections 55, 56, after their loosening both the bearings 14, 15, 22, 23 and the socket 13, the hollow shaft 12 and the chamber drive shaft 21 can be separated from one another.
  • the pulleys 10, 24 are secured from the outside using circlip brackets 57, 58 and are easily detachable.
  • the rotating frame 3 with its lower support plate 18 can also be lifted off.
  • the deflection shaft 27 with the bearings 29, 30 and the pulleys 26, 33 can also be easily dismantled and at the same time adjusted, for example to set a suitable drive belt tension.
  • the bearings 30, 29, in which the deflection shaft 27 runs are mounted in bearing blocks 59, 60, which can be displaced in the direction of the drive belts 25, 34 by means of adjusting devices 61, 62 arranged laterally on the lower and upper support plates 18, 28 . After loosening the adjusting devices 61, 62, the entire deflection shaft 27 can be removed, for example when changing the drive belts 25, 34.
  • a loosening of the centrifuge chamber 4 or its support and drive elements is also easy to carry out. After opening the screw connections 40, 41, the entire unit connected to the socket 39 can be removed from the rotating frame 3.
  • the bearings 37, 38 for the hollow shaft 36 can be removed from the bush 39 after loosening screw connections 63, 64, as a result of which the hollow shaft 36 can also be pulled out of the bush 39. Overall, the. Maintenance can be carried out quickly and easily for cleaning or repair purposes.
  • FIG. 2 shows a further embodiment of a centrifuge, which is essentially identical to the embodiment shown in FIG. 1.
  • These parts are a drive motor 65 with rotary connections to a hollow shaft 66 and a chamber drive shaft 67, with a rotating frame 68 of the hollow shaft 66 and of the chamber drive shaft is driven via a deflection shaft 69, a centrifuge chamber 70 at twice the speed of the rotating frame 68.
  • the rotating frame 68 also has an upper support plate 71 here.
  • the centrifuge chamber 70 is here not mounted above the upper support plate 71 but below a pulley 72 within the area of the rotating frame 68.
  • a line 73 is introduced into the centrifuge chamber 70 from below and is guided with a loop via a line support 74 around the centrifuge chamber 70 to a fixed connection point 75 above the centrifuge in the axial direction of the centrifuge chamber axis.
  • the arrangement shown here has the advantage that the rotating masses are more concentrated than in the first embodiment and are therefore easier to control with regard to vibrations and imbalances.
  • the arrangement of the centrifuge chamber 70 within the rotating frame 68 makes the entire arrangement more compact.
  • the embodiment shown in FIG. 3 has no coaxial mounting of the chamber drive shaft in the hollow shaft.
  • the output shaft 81 of the drive motor in turn carries two spaced apart pulleys 82 and 83, from which drive belts 84 and 85 lead to the further pulleys 86 and 87.
  • the pulley 87 sits at the lower end of a chamber drive shaft 88 which is rotatably supported in the support frame 80 with the help of the bearings 89 and 90.
  • the chamber drive shaft 88 also extends through the rotating frame 91, in which it is rotatably mounted by means of the bearing 92. At the upper end there is in turn a pulley 93 which is connected via a drive belt 94 to a pulley 95 which is seated on the deflection shaft 96.
  • This deflection shaft 96 is rotatably supported at its lower end via the bearing 97 in the rotating frame 91 and extends at its upper end through the rotating frame 91, a further bearing 98 being provided for storage.
  • This upper end has a pulley 99, which is connected via a drive belt 100 to the pulley 101, which is seated on a hollow shaft 102.
  • This hollow shaft 102 is aligned with the axis of rotation of the chamber drive shaft, thus the central axis of rotation, while the axis of rotation of the deflection shaft 96 is laterally offset.
  • the hollow shaft 102 is rotatably supported at its lower end via the bearing 103 in the upper part of the rotating frame 91.
  • the drive train extending across the centrifugal fu g enhunt 104 which is fixed to the upper end of the hollow shaft 102 from the pulley 83 'belt over the propellant 85, the pulley 87, the chamber drive shaft 88, the pulley 93, the drive belt 94, the pulley 95, the deflection shaft 96, the pulley 99, the drive belt 100, the pulley 101 and the hollow shaft 102.
  • the diameter of the pulleys 83 and 87, the pulleys 93 and 101 and the pulleys 95 and 99 are identical.
  • the output shaft 81 and the hollow shaft 102 rotate at the same angular velocity.
  • the gear train for driving the centrifuge chamber 104 is essentially the same as the gear train of the embodiment shown in FIG. 1. Only the pulley 99 and, in a corresponding manner, the pulley 101 are located above the rotating frame 91. On the other hand, however, the arrangement of these pulleys within the rotating frame 91 may also be possible, as shown in FIG. 1.
  • the rotating frame drive shaft 106 is laterally offset from the chamber drive shaft 88, and is therefore not located in the central axis of rotation of the entire arrangement.
  • This rotating frame drive shaft 106 passes through the support frame 80 and is mounted and held therein with the bearing 107.
  • the pulley 86 which is connected to the output shaft 81 via the drive belt 84, is fastened to the rotating frame drive shaft 106 below the support frame.
  • the pulleys 82 and 86 advantageously have the same diameter, so that the shafts 81 and 106 rotate at the same angular velocity.
  • This rotating frame drive shaft has a further pulley 108 in a fastened arrangement at its other end above the support frame.
  • This pulley 108 is located below the rotating frame 91 and is not in contact with it. From this pulley 108 there is a drive belt 109 which drives a pulley 110, the axis of which coincides with the central axis of rotation of the arrangement.
  • This pulley 110 is fastened to the underside of the rotating frame 91 and has a recess 111 through which the chamber drive shaft 88 passes. Thus, this pulley 110 is not in contact with the centrifuge chamber drive train.
  • the pulley 110 has twice the diameter of the pulley 108, with the result that the rotating frame 91 is rotated at half the speed of the drive motor.
  • the drive train extends to the movement of the rotating frame 91 from the output shaft 81, the R iemenschei- be 82, the drive belt 84, the pulley 86, the rotary frame drive shaft 106, the pulley 108, the drive belt 109, the pulley 110 to the rotary frame 91st
  • the output shaft can coincide with one of the two drive shafts, that is to say with the chamber drive shaft 88 or with the rotating frame drive shaft 106.
  • the output shaft 81 coincides with the rotating frame drive shaft 106.
  • pulleys 82, 83 and 86 are omitted, a pulley 112 being provided instead of the pulley 86, which corresponds to the pulley 83 in shape and effect.
  • This pulley 112 is connected to the pulley 87 by an extended drive belt 113.
  • the rotating frame drive shaft 106 is extended in the direction of the drive motor M with a shoulder 114 which is driven directly by the drive motor M.
  • FIG. 3 shows in a basic embodiment the arrangement of the drive trains and their storage in the support frame 80 and the rotating frame 91.
  • the structural details of these drive trains correspond to those of the embodiments of FIGS. 1 and 2, so that the described therein Flanges and bushings are also used here.
  • Belt drives are used as rotary connections in the described embodiments. These belt drives have an advantageously low noise level and are therefore preferred. However, the effect according to the invention is also achieved in the case of gear drives in the drive according to the invention, since the direction of rotation is reversed after each gear connection, but overall the centrifuge chamber and the rotating frame are rotated in the same direction because no planetary movement is carried out.
  • the features of the invention show a centrifuge without rotary or grinding seals, with which a known speed ratio between a centrifuge chamber and a line driver of 2: 1 is achieved.
  • the drive for this is simplified by the arrangement, in particular the coaxial arrangement of the drive shafts, since the desired same directions of rotation are always generated. This leads to a compact and simple structure in which the rotating masses are kept small.
  • the 2: 1 gear ratio between the individual gears and pulleys is normally preferred to achieve the 2: 1 ratio in the rotational speeds between the centrifuge chamber 4, 70 and 104 on the one hand and the rotatable cable carrier on the other.
  • the diameter ratio as far as it is indicated above with 2: 1, can also be selected differently, for example with 1: 1 or otherwise, including possible intermediate values, as long as it is ensured that this is compared Differences in the rotational speeds resulting from the illustrated embodiments are compensated for by appropriate selection of the gear ratios of other gear wheels or pulleys, in order to ensure that the explained speed ratio between the centrifuge chamber and the line driver is ultimately achieved.

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  • Centrifugal Separators (AREA)
EP83111445A 1982-11-18 1983-11-15 Centrifugeuse Expired EP0109652B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83111445T ATE34676T1 (de) 1982-11-18 1983-11-15 Zentrifuge.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3242541 1982-11-18
DE19823242541 DE3242541A1 (de) 1982-11-18 1982-11-18 Zentrifuge

Publications (3)

Publication Number Publication Date
EP0109652A2 true EP0109652A2 (fr) 1984-05-30
EP0109652A3 EP0109652A3 (en) 1985-10-09
EP0109652B1 EP0109652B1 (fr) 1988-06-01

Family

ID=6178378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111445A Expired EP0109652B1 (fr) 1982-11-18 1983-11-15 Centrifugeuse

Country Status (5)

Country Link
US (1) US4540397A (fr)
EP (1) EP0109652B1 (fr)
JP (1) JPH0651133B2 (fr)
AT (1) ATE34676T1 (fr)
DE (2) DE3242541A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295707C (zh) * 2001-12-18 2007-01-17 株式会社东芝 具有磁屏蔽层的磁存储器件及其制造方法

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DE4310975C2 (de) * 1993-04-03 1997-04-03 Fresenius Ag Schlauchanordnung für eine gleitdichtungsfreie Zentrifuge
DE4330905C2 (de) * 1993-09-11 1995-06-14 Fresenius Ag Verriegelungsvorrichtung für eine Lageranordnung einer Separationskammer einer Zentrifuge
US5514069A (en) * 1993-12-22 1996-05-07 Baxter International Inc. Stress-bearing umbilicus for a compact centrifuge
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DE19801767C1 (de) * 1998-01-19 1999-10-07 Fresenius Ag Zentrifuge
DE19803534C2 (de) * 1998-01-30 1999-11-11 Fresenius Ag Zentrifuge und Leitung zum Zuführen und/oder Abführen mindestens eines Fluids von der Separationseinheit einer Zentrifuge zu einer ortsfesten Anschlußstelle
DE19803535C2 (de) * 1998-01-30 1999-11-18 Fresenius Ag Zentrifuge und Leitung zum Zuführen und/oder Abführen mindestens eines Fluids von der Separationseinheit einer Zentrifuge zu einer ortsfesten Anschlußstelle
EP1043071A1 (fr) * 1999-04-09 2000-10-11 Jean-Denis Rochat Appareil de cetrifugation de liquide et utillisation de cet appareil
DE19944617C2 (de) * 1999-09-17 2002-01-10 Fresenius Ag Zentrifuge mit einem magnetischen Getriebe
US20020107469A1 (en) * 2000-11-03 2002-08-08 Charles Bolan Apheresis methods and devices
DE10129769A1 (de) 2001-06-20 2003-01-09 Fresenius Hemocare Gmbh Schlauchanordnung und Verfahren zu ihrer Herstellung
DE10142744C1 (de) 2001-08-31 2003-05-22 Fresenius Hemocare Gmbh Zentrifuge
US7479123B2 (en) 2002-03-04 2009-01-20 Therakos, Inc. Method for collecting a desired blood component and performing a photopheresis treatment
US7211037B2 (en) 2002-03-04 2007-05-01 Therakos, Inc. Apparatus for the continuous separation of biological fluids into components and method of using same
US8092075B2 (en) * 2003-09-11 2012-01-10 Thinky Corporation Agitation/deaeration device
US7476209B2 (en) 2004-12-21 2009-01-13 Therakos, Inc. Method and apparatus for collecting a blood component and performing a photopheresis treatment
DE102007011332A1 (de) 2007-03-08 2008-09-11 Fresenius Hemocare Deutschland Gmbh Vorrichtung und Verfahren zum Separieren einer Zellsuspension, insbesondere zum Abtrennen mindestens einer Blutkomponente aus Vollblut
US8257239B2 (en) 2010-06-15 2012-09-04 Fenwal, Inc. Umbilicus for use in an umbilicus-driven fluid processing
US8277369B2 (en) 2010-06-15 2012-10-02 Fenwal, Inc. Bearing and bearing assembly for umbilicus of a fluid processing system
EP2731725B1 (fr) * 2011-09-22 2015-01-14 Fenwal, Inc. Système d'entraînement pour centrifugeuse
US9347540B2 (en) * 2011-09-22 2016-05-24 Fenwal, Inc. Flexible shaft drive system for centrifuge with pivoting arms
GB201116721D0 (en) * 2011-09-28 2011-11-09 Glaxo Group Ltd Novel device
EP2698208A1 (fr) 2012-08-14 2014-02-19 Fresenius Kabi Deutschland GmbH Dispositif de centrifugation et procédé de fonctionnement dýun dispositif de centrifugation
US9383044B2 (en) 2013-02-15 2016-07-05 Fenwal, Inc. Low cost umbilicus without overmolding
CN114273096B (zh) * 2021-12-25 2024-08-23 董庆丰 医疗实验室用的低速自抽负压离心机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1295707C (zh) * 2001-12-18 2007-01-17 株式会社东芝 具有磁屏蔽层的磁存储器件及其制造方法

Also Published As

Publication number Publication date
DE3242541A1 (de) 1984-05-24
EP0109652A3 (en) 1985-10-09
EP0109652B1 (fr) 1988-06-01
ATE34676T1 (de) 1988-06-15
US4540397A (en) 1985-09-10
DE3242541C2 (fr) 1987-09-17
JPH0651133B2 (ja) 1994-07-06
JPS59156448A (ja) 1984-09-05
DE3376805D1 (en) 1988-07-07

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