EP2243554A2 - Multi-lumen rope for continuous flow centrifuge - Google Patents
Multi-lumen rope for continuous flow centrifuge Download PDFInfo
- Publication number
- EP2243554A2 EP2243554A2 EP10172379A EP10172379A EP2243554A2 EP 2243554 A2 EP2243554 A2 EP 2243554A2 EP 10172379 A EP10172379 A EP 10172379A EP 10172379 A EP10172379 A EP 10172379A EP 2243554 A2 EP2243554 A2 EP 2243554A2
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- European Patent Office
- Prior art keywords
- rope
- fluid
- lumen
- set forth
- tubing
- 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.)
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- 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
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- 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
- B04B2005/0492—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 with fluid conveying umbilicus between stationary and rotary centrifuge parts
Definitions
- the present invention relates to centrifuge apparati and more particularly to a centrifuge which works in conjunction with a cassette, rotor or other device having fluid retentive chambers and fluid flow tubing fixedly attached to the axis of the device.
- U.S. Pat. No. 5,665,048 that provides a centrifuge for rotating a fluid retentive housing having fluid input and output tubing fixedly connected to a rotation axis of the fluid retentive housing, the centrifuge comprising: a frame; a first rotatable mechanism having a rotation axis, the fluid retentive housing being coaxially mounted thereon for co-rotation therewith; a second rotatable mechanism having a rotation axis, the first and second rotation mechanism being coaxially mounted on the frame; the second rotatable mechanism having an outer circumferential surface engaged with a drive mechanism, the drive mechanism driving the outer circumferential surface such that the second rotatable mechanism rotates at a selected rotational speed X; the first rotatable mechanism being interconnected to the second rotatable mechanism such that the first rotatable mechanism rotates simultaneously with the second rotatable mechanism at a rotational speed of 2X.
- the second rotatable mechanism includes a seat for holding a distal length of the output tubing which extends from the axis of the fluid retentive housing, wherein the distal length of the output tubing held by the seat is rotated around the rotation axis at the same rotational speed as the second rotatable mechanism.
- a centrifuge for rotating a fluid retentive housing such that one or more selected materials suspended in a fluid retained within the housing centrifuged upon rotation of the housing.
- the centrifuge includes a first rotatable mechanism having a rotation access with the fluid retentive housing being coaxially mounted on the first rotatable mechanism for co-rotation therewith.
- a second rotatable mechanism having a rotation axis with the first and second rotatable mechanisms being coaxially interconnected for co-rotation around a common axis.
- Fluid tubing connected to the axis of the fluid retentive housing has a distal length that extends axially outwardly from the fluid retentive housing.
- the improvement comprises a support arm mounted to the second rotatable mechanism, a support tube for receiving therethrough at least part of the distal length of the fluid tubing, and a bearing member for rotatably supporting the support tube in said support arm whereby upon rotation of the first and second rotation mechanisms, the fluid tubing is free to either rotate with or rotate relative to the support tube so as to minimize friction between the fluid tubing and the support therefor.
- a multi-lumen rope comprising a plurality of elongated tubes for delivering one or more fluids between a first fluid containing mechanism and a fluid receiving rotatably driven rotor.
- One end of the rope is attached to the center of the driven rotor and the other end of the rope is attached to the first fluid retaining mechanism.
- the first fluid retaining mechanism is mounted on an opposing side of the rotor such that the point of attachment of the other end of the rope is substantially coaxial with an axis of the rotor.
- the aforementioned elongated tubes may comprise at least one tube disposed of in a spiral wrap.
- This may be either a single strand or a multi-strand wrap and may be either in a counterclockwise or clockwise direction. And also, in a single strand or a multi-strand, at one end the spiral wrap may be clockwise while at the other end counterclockwise and also optionally have a straight section therebetween.
- FIG. 1 shows a centrifuge apparatus 10, the basic construction of which may be substantially the same as that described in U.S. Pat. No. 5,665,048 .
- the support includes the support arm 50 as well as its guide members 52 and 54.
- This apparatus includes a bag set 20.
- This may also be referred to as a self-contained fluid retentive centrifuge cassette or rotor which is mounted on an inner-rotatable chuck 60.
- the bag set 20, as illustrated in FIGS. 1 and 3 has fluid input and output 70 coaxially and fixedly attached to the axis 40 of the cassette 20. As shown, the cassette is mounted on the chuck 60 such that it's rotation axis is coaxial along common axis 40.
- FIG. 1 actually shows the cutaway section indicating the chuck 60 and a further cutaway section showing a gear 91, part of the aforementioned gear train.
- FIGS. 2 and 3 illustrate the support arm 50.
- the support arm 50 at its central section 56 is fixedly attached to an inner-peripnery of the pulley 90.
- the support arm 50 rotates with the Hub 90.
- the support arm 50 is of elongated shape and extends on either side of the centrifuge apparatus 10, as illustrated in FIG. 1 .
- the support arm 50 has an elongated channel 58 which receives the support tube 80.
- the support tube 80 is actually supported in the channel 58 by means of a pair of bearings 82 illustrated in FIGS. 3 and 4 .
- Each of these bearings is accommodated in a corresponding recess 84 at opposite ends of the support arm, as illustrated in FIG. 2 .
- FIG. 1 shows all of these various components in their final assembled state.
- the fluid tubing 70 is shown being guided by a C-shaped guide member 52 into one end of the support tube 80.
- the fluid tubing length 72 extends out of the support tube and into the S-shaped tubing guide 54, as also illustrated in FIG. 1 .
- the fluid tubing is in the form of a multi-lumen rope, embodiments of which will be described hereinafter, the elements of the rope furthest from the access of rotation exert large forces against the supporting surface and consequently produce large frictional forces impeding the twists required to make the slip rope function. It has been found that the following perimeters are desirable for proper operation of a multi-lumen skip rope;
- Parameters 1 and 2 are generally met by selecting relatively small diameter, high durometer thermoplastic tubing. Gluing methods and fixtures were used so that an assembly of at least 9 lumens could be well fabricated with very uniform tubing lay and therefore stiffness and strength. This assembly is of a spiral wrapped construction to improve uniformity.
- FIG. 5A shows a single strand 100A counterclockwise wrap while FIG. 5B shows a multi-strand 100B counterclockwise wrap.
- FIG. 5C shows a single strand 100C clockwise wrap, while FIG. 5D shows a multi-strand 100D clockwise wrap.
- portions of the skip rope progress through curved supports from the access of rotation from the periphery where the rope is guided through very smooth, Teflon, hard coated aluminum parts. Please refer to FIG. 3 and guide members 52 and 54. That in these areas, the co-efficient of friction between the skip rope and the guides is preferably less than 0.2.
- the portion of the skip rope at the maximum radius from the center of rotation is a straight section of various lengths. This section can be very important to the overall torque needed to twist the rope. Indeed the weight of the skip rope assembly (plus fluids if it is filled) is increased by the G-field which may be a multiplier of 1,000 or more.
- this section of skip rope is supported by the aforementioned support tube 80. This is preferably a stiff tube of either metal of structural plastic. The stiff tube is itself supported by the aforementioned low friction bearings 82 allowing full rotation about its own axis. This reduces the torque needed to drive this region of the skip rope assembly to very nearly zero.
- This structure of the support tube and bearings provides an advantageous support for the length of fluid tubing or lumen between the guides 52 and 54. Because the support tube is free to rotate, upon rotation of the members such as 60 and 90 in FIG. 1 , in other words first and second rotation mechanisms, the fluid tubing is free to either rotate with or rotate relative to the support tube.
- FIG. 5B Another characteristic of the present invention relates to the construction of the multi-lumen rope itself, as illustrated, for example, in FIG. 5B .
- This may be comprised of a plurality of at least eight lumens 100B about a center lumen 102B.
- the center lumen 102B is straight while the other peripheral lumens wrap, such as illustrated in FIG. 5B .
- the center lumen 102B may be an expresser tube while the lumens 100B may be processing tubes.
- the tube 102B may be an input tubing and tubings 100B may be output tubings.
- the input and output tubings may be also reversed.
Abstract
Description
- The present invention relates to centrifuge apparati and more particularly to a centrifuge which works in conjunction with a cassette, rotor or other device having fluid retentive chambers and fluid flow tubing fixedly attached to the axis of the device.
- In the context of mechanisms which have come to be known as continuous flow centrifuges, when a length of tubing is fixedly attached to the rotation axis of a device which contains the fluid material to be centrifuged, the entire length of tubing must be rotated by use of rotary seals or some other means to avoid twisting the tubing. A well known method for avoiding the use of rotary seals is to curve the length of tubing outwardly from the axis and around the outer edge of the circumference of the rotor, cassettes or the like and, to rotate the tubing in an orbital fashion around the rotor/cassette at one-half times the rotational speed of the rotor/cassette itself. Such a method for eliminating tube twisting and apparati therefore are disclosed, for example, in
U.S. Pat. Nos. 4,216,770 ,4,419,089 and4,389,206 . - Problems inherent in such prior apparatuses which orbit the fluid flow tubing around the axis of centrifuge rotation are that the axis of rotation is disposed vertically, the tubing is routed through an axial shaft and the apparatus is driven by driving an axial shaft which requires a high aspect ratio and an elongated shaft which limit the rotational speed, render the apparatus instable and limits the ability of the user to mount a second cassette, rotor or the like on opposing sides of the chuck component of the apparatus.
- In accordance with the foregoing, reference is also made to
U.S. Pat. No. 5,665,048 that provides a centrifuge for rotating a fluid retentive housing having fluid input and output tubing fixedly connected to a rotation axis of the fluid retentive housing, the centrifuge comprising: a frame; a first rotatable mechanism having a rotation axis, the fluid retentive housing being coaxially mounted thereon for co-rotation therewith; a second rotatable mechanism having a rotation axis, the first and second rotation mechanism being coaxially mounted on the frame; the second rotatable mechanism having an outer circumferential surface engaged with a drive mechanism, the drive mechanism driving the outer circumferential surface such that the second rotatable mechanism rotates at a selected rotational speed X; the first rotatable mechanism being interconnected to the second rotatable mechanism such that the first rotatable mechanism rotates simultaneously with the second rotatable mechanism at a rotational speed of 2X. - The second rotatable mechanism includes a seat for holding a distal length of the output tubing which extends from the axis of the fluid retentive housing, wherein the distal length of the output tubing held by the seat is rotated around the rotation axis at the same rotational speed as the second rotatable mechanism. One of the problems associated with such an arrangement is that there is continuous friction between the tubing and the seat.
- Therefore, in accordance with the present invention, there is provided an improvement in a centrifuge, and, in particular, an improvement relating to fluid tubing by the support thereof. In accordance with the present invention, there is provided a centrifuge for rotating a fluid retentive housing such that one or more selected materials suspended in a fluid retained within the housing centrifuged upon rotation of the housing. The centrifuge includes a first rotatable mechanism having a rotation access with the fluid retentive housing being coaxially mounted on the first rotatable mechanism for co-rotation therewith. There is also provided a second rotatable mechanism having a rotation axis with the first and second rotatable mechanisms being coaxially interconnected for co-rotation around a common axis. Fluid tubing connected to the axis of the fluid retentive housing has a distal length that extends axially outwardly from the fluid retentive housing. In accordance with one embodiment of the present invention, the improvement comprises a support arm mounted to the second rotatable mechanism, a support tube for receiving therethrough at least part of the distal length of the fluid tubing, and a bearing member for rotatably supporting the support tube in said support arm whereby upon rotation of the first and second rotation mechanisms, the fluid tubing is free to either rotate with or rotate relative to the support tube so as to minimize friction between the fluid tubing and the support therefor.
- In accordance with another embodiment of the present invention, there is provided a multi-lumen rope comprising a plurality of elongated tubes for delivering one or more fluids between a first fluid containing mechanism and a fluid receiving rotatably driven rotor. One end of the rope is attached to the center of the driven rotor and the other end of the rope is attached to the first fluid retaining mechanism. The first fluid retaining mechanism is mounted on an opposing side of the rotor such that the point of attachment of the other end of the rope is substantially coaxial with an axis of the rotor. The aforementioned elongated tubes may comprise at least one tube disposed of in a spiral wrap. This may be either a single strand or a multi-strand wrap and may be either in a counterclockwise or clockwise direction. And also, in a single strand or a multi-strand, at one end the spiral wrap may be clockwise while at the other end counterclockwise and also optionally have a straight section therebetween.
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FIG. 1 is a perspective view of a centrifuge apparatus according to the invention; -
FIG. 2 is a perspective view of a portion of the apparatus ofFIG. 1 , particularly, the support arm; -
FIG. 3 is an exploded perspective view showing the support arm with end guides and the fluid retentive housing with fluid tubing; -
FIG. 4 is an exploded perspective view showing the components of the fluid retentive housing and fluid tubing; and -
FIGS. 5A-5H disclose various separate embodiments of the fluid tubing or multi-lumen rope as in accordance with the present invention. -
FIG. 1 shows acentrifuge apparatus 10, the basic construction of which may be substantially the same as that described inU.S. Pat. No. 5,665,048 . As far as the invention of the present invention is concerned, this relates more to thetubing 70, and, in particular, its support from thecentrifuge apparatus 10. The support includes thesupport arm 50 as well as itsguide members - As indicated previously, the basic structure of the
centrifuge apparatus 10 may be the same as that described inU.S. Pat. No. 5,665,048 .U.S. Pat. No. 5,665,048 is thus hereby now incorporated by reference herein. This apparatus includes a bag set 20. This may also be referred to as a self-contained fluid retentive centrifuge cassette or rotor which is mounted on an inner-rotatable chuck 60. The bag set 20, as illustrated inFIGS. 1 and3 , has fluid input andoutput 70 coaxially and fixedly attached to theaxis 40 of thecassette 20. As shown, the cassette is mounted on thechuck 60 such that it's rotation axis is coaxial alongcommon axis 40. Thus, as thechuck 60 rotates, the fixedly attachedtubing 70 co-rotates therewith. As shown, there is alength 72 of thetubing 70 which extends axially outwardly from the area of thefixed attachment 71. Thelength 72 of tubing is curved axially backwardly toward and extends through a radially outer, separatelyrotatable pulley 90 which rotates, by virtue of a gear train interconnecting thepulley 90 and thechuck 60 at a speed of XRPM while the chuck rotates at a speed of 2XRPM. Again, reference is made toU.S. Pat. No. 5,665,048 which is incorporated by reference herein regarding the operation of the chuck and pulley arrangement.FIG. 1 actually shows the cutaway section indicating thechuck 60 and a further cutaway section showing agear 91, part of the aforementioned gear train. - In operation, as the
pulley 90 rotates, the backwardlycurved length 72 of the tubing is rotated aroundaxis 40 at a rate of XRPM while the fixedly attachedend 71 of thetubing 70 is actually rotated at a rate of 2XRPM. This phenomenon is well known in the art as enabling thetubing 70 to avoid twisting around its axis even as thecassette 20 and thechuck 60 forced thetubing U.S. Pat. No. 5,665,048 as well as inU.S. Pat. No. RE29,738 (3, 586, 413) (Adams ). - Now, reference is further made to
FIGS. 2 and3 which illustrate thesupport arm 50. Thesupport arm 50 at itscentral section 56, is fixedly attached to an inner-peripnery of thepulley 90. Thus, thesupport arm 50 rotates with the Hub 90. - The
support arm 50 is of elongated shape and extends on either side of thecentrifuge apparatus 10, as illustrated inFIG. 1 . As illustrated inFIG. 2 , thesupport arm 50 has anelongated channel 58 which receives thesupport tube 80. Thesupport tube 80 is actually supported in thechannel 58 by means of a pair ofbearings 82 illustrated inFIGS. 3 and 4 . Each of these bearings is accommodated in acorresponding recess 84 at opposite ends of the support arm, as illustrated inFIG. 2 . - Thus, the
support arm 50 is fixedly attached to thepulley 90, thesupport tube 80 is supported within the channel and support arm by means ofbearings 82 and then thefluid tubing 70 extends through thesupport tube 80, but in this regard,FIG. 1 shows all of these various components in their final assembled state. Thefluid tubing 70 is shown being guided by a C-shapedguide member 52 into one end of thesupport tube 80. At the other end of the support tube, thefluid tubing length 72 extends out of the support tube and into the S-shapedtubing guide 54, as also illustrated inFIG. 1 . - When the fluid tubing is in the form of a multi-lumen rope, embodiments of which will be described hereinafter, the elements of the rope furthest from the access of rotation exert large forces against the supporting surface and consequently produce large frictional forces impeding the twists required to make the slip rope function. It has been found that the following perimeters are desirable for proper operation of a multi-lumen skip rope;
- 1) strong but flexible skip rope assembly;
- 2) ability to transmit torque without damage to the rope;
- 3) low friction between rope and supports particularly far from the rotational axis where the g-field is high.
- Parameters 1 and 2 are generally met by selecting relatively small diameter, high durometer thermoplastic tubing. Gluing methods and fixtures were used so that an assembly of at least 9 lumens could be well fabricated with very uniform tubing lay and therefore stiffness and strength. This assembly is of a spiral wrapped construction to improve uniformity.
- Reference is also now made to
FIGS. 5A-5H for various designs of the rope.FIG. 5A shows a single strand 100A counterclockwise wrap whileFIG. 5B shows a multi-strand 100B counterclockwise wrap.FIG. 5C shows a single strand 100C clockwise wrap, whileFIG. 5D shows a multi-strand 100D clockwise wrap. Through testing and observation, it is found that the two ends of the skip rope behave asymmetrically. This is due to the fact that one end is twisting clockwise and the other end counterclockwise. One end tends to twist up while the other end untwists. Thus, it has been found that in accordance with one embodiment, during the rope fabrication, the twist direction may be reversed in mid-rope. In this rcgard, refer toFIGS. 5A ,5F and5H . It is noted that a small section of the rope in the middle has no twist. By doing so, one may install the rope so that both ends see the same twisting condition. The rope may be installed so that both ends twist up to yield maximum torque stiffness so that both ends untwist to produce minimum restriction to fluid flow in the tubes. - In accordance with the present invention, in order to provide the desired low friction, relating to the fluid tubing, it is noted that portions of the skip rope progress through curved supports from the access of rotation from the periphery where the rope is guided through very smooth, Teflon, hard coated aluminum parts. Please refer to
FIG. 3 and guidemembers - The portion of the skip rope at the maximum radius from the center of rotation is a straight section of various lengths. This section can be very important to the overall torque needed to twist the rope. Indeed the weight of the skip rope assembly (plus fluids if it is filled) is increased by the G-field which may be a multiplier of 1,000 or more. To reduce the torque needed to drive the twisting motion, this section of skip rope is supported by the
aforementioned support tube 80. This is preferably a stiff tube of either metal of structural plastic. The stiff tube is itself supported by the aforementionedlow friction bearings 82 allowing full rotation about its own axis. This reduces the torque needed to drive this region of the skip rope assembly to very nearly zero. This structure of the support tube and bearings, provides an advantageous support for the length of fluid tubing or lumen between theguides FIG. 1 , in other words first and second rotation mechanisms, the fluid tubing is free to either rotate with or rotate relative to the support tube. - Another characteristic of the present invention relates to the construction of the multi-lumen rope itself, as illustrated, for example, in
FIG. 5B . This may be comprised of a plurality of at least eightlumens 100B about a center lumen 102B. The center lumen 102B is straight while the other peripheral lumens wrap, such as illustrated inFIG. 5B . The center lumen 102B may be an expresser tube while thelumens 100B may be processing tubes. Put another way, the tube 102B may be an input tubing and tubings 100B may be output tubings. The input and output tubings may be also reversed. - It will now be apparent to those skilled in the art that other embodiments, improvements, details and uses can be made consistent with the letter and spirit of the foregoing disclosure and within the scope of this patent, which is limited only by the following claims, construed in accordance with the patent law, including the doctrine of equivalents.
- The invention can also be defined with reference to the following clauses:
- 1. In a centrifuge for rotating a fluid retentive housing such that one or more selected materials suspended in a fluid retained within the housing are centrifuged upon rotation of the housing, said centrifuge including: a first rotatable mechanism having a rotation axis with the fluid retentive housing being coaxially mounted on the first rotatable mechanism for co-rotation therewith; a second rotatable mechanism having a rotation axis with the first and second rotatable mechanisms being coaxially interconnected for co-rotation around a common axis; fluid tubing connected to the axis of the fluid retentive housing and having a distal length that extends axially outwardly from the fluid retentive housing; the improvement comprising ; a support arm mounted to the second rotatable mechanism, a support tube for receiving therethrough at least part of the distal length of said fluid tubing, and a bearing member for rotatably supporting said support tube in said support arm, whereby upon rotation of said first and second rotation mechanisms said fluid tubing is free to one of rotate with and rotate relative to said support tube.
- 2. In a centrifuge as set forth in clause 1, wherein said support arm extends to either side of said first and second rotatable mechanisms.
- 3. In a centrifuge as set forth in clause 1, wherein said support arm includes a longitudinal channel for receiving said support tube.
- 4. In a centrifuge as set forth in clause 3, wherein said support arm also includes oppositely disposed recesses for receiving said bearing member.
- 5. In a centrifuge as set forth in clause 4, wherein said bearing member comprises a pair of oppositely disposed bearings received in said recesses of said support arm and for supporting opposite ends of said support tube.
- 6. In a centrifuge as set forth in clause 5, including an input guide member secured to one side of said support arm.
- 7. In a centrifuge as set forth in clause 6, including an output guide member secured to an opposite end of said support arm.
- 8. In a centrifuge as set forth in clause 1, including an input guide member secured to one side of said support arm 9. In a centrifuge as set forth in clause 8, including an output guide member secured to an opposite end of said support arm
- 10. In a centrifuge as set forth in clause 1, wherein said fluid tubing comprises a high durometer urethane tubing.
- 11. In a centrifuge as set forth in clause 1, further including guide members at both ends of said support arm.
- 12. In a centrifuge as set forth in clause 11, wherein said pair of guide members are each smooth, Teflon, hardcoated, aluminum members.
- 13. A multi-lumen rope comprising a plurality of elongated tubes for delivering one or more fluids between a first fluid containing mechanism and a fluid receiving rotatably driven rotor, one end of the rope being attached to the center of the driven rotor, the other end of the rope being attached to the first fluid retaining mechanism, the first fluid retaining mechanism being mounted on an opposing side of the rotor and such that the point of attachment of the other end of the rope is substantially coaxial with an axis of the rotor, said elongated tubes comprising at least one tube disposed in a spiral wrap.
- 14. A multi-lumen rope as set forth in clause 13, wherein said plurality of tubes include a center expresser tube and a plurality of peripheral processing tubes.
- 15. A multi-lumen rope as set forth in clause 14, wherein said spiral wrap is counterclockwise.
- 16. A multi-lumen rope as set forth in clause 14, wherein said spiral wrap is clockwise.
- 17. A multi-lumen rope as set forth in clause 13, wherein one end of the rope has a right hand twist and the other end of the rope has a left hand twist.
- 18. A multi-lumen rope as set forth in clause 17, wherein a section of the rope in the middle has no twist.
- 19. A multi-lumen rope as set forth in clause 13, wherein the rope is installed so that both ends twist up to yield maximum tortional stiffness.
- 20. A multi-lumen rope as set forth in clause 13, wherein the rope is installed so that both ends untwist to produce minimum restriction to fluid flow in the tubes.
- 21. A multi-lumen rope comprising a plurality of elongated tubes for delivering one or more fluids between a first fluid containing mechanism and a fluid receiving rotatably driven rotor, one end of the rope being attached to the center of the driven rotor, the other end of the rope being attached to the first fluid retaining mechanism, the first fluid retaining mechanism being mounted on an opposing side of the rotor and such that the point of attachment of the other end of the rope is substantially coaxial with an axis of the rotor, a support arm rotatable with the rotor, a support tube for receiving therethrough at least part of the distal length of the elongated tubes, and a bearing member for rotatably supporting said support tube in said support arm.
- 22. A multi-lumen rope as set forth in clause 21, wherein said support arm has a channel for receiving said support tube and opposite recesses for receiving a pair of bearings that comprise said bearing member.
- 23. A multi-lumen rope as set forth in clause 22, further including an input guide member secured to one end of said support arm and an output guide member secured to the other end of said support arm.
- 24. A centrifuge for rotating a fluid retentive housing having fluid input and output tubing fixedly connected to a rotation axis of the fluid retentive housing, the centrifuge comprising: a frame; a first rotatable mechanism having a rotation axis and a first diameter, the fluid retentive housing being coaxially mounted on the first rotatable mechanism for co-rotation therewith; a second rotatable mechanism having a rotation axis and a second diameter greater than the first diameter, the first and second rotatable mechanisms being coaxially mounted on the frame ; the second rotatable mechanism having an outer circumferential surface engaged with a drive mechanism, the drive mechanism driving the outer circumferential surface such that the second rotatable mechanism rotates at a selected rotational speed X; the first rotatable mechanism being interconnected to the second rotatable mechanism such that the first rotatable mechanism rotates simultaneously with the second rotatable mechanism at a rotational speed of 2X, a support arm mounted to the second rotatable mechanism, a support tube for receiving therethrough at least part of the distal length of said fluid tubing, and a bearing member for rotatably supporting said support tube in said support arm, whereby upon rotation of said first and second rotation mechanisms said fluid tubing is free to one of rotate with and rotate relative to said support tube.
- 25. In a centrifuge as set forth in clause 24, wherein said support arm has a channel for receiving said support tube and opposite recesses for receiving a pair of bearings that comprise said bearing member.
- 26. In a centrifuge as set forth in clause 25, further including an input guide member secured to one end of said support arm and an output guide member secured to the other end of said support arm
Claims (7)
- A multi-lumen rope comprising a plurality of elongated tubes for delivering one or more fluids between a first fluid containing mechanism and a fluid receiving rotatably driven rotor, one end of the rope being attached to the center of the driven rotor, the other end of the rope being attached to the first fluid retaining mechanism, the first fluid retaining mechanism being mounted on an opposing side of the rotor and such that the point of attachment of the other end of the rope is substantially coaxial with an axis of the rotor, said elongated tubes comprising at least one tube disposed in a spiral wrap, wherein one end of the rope has a right hand twist and the other end of the rope has a left hand twist.
- A multi-lumen rope as set forth in claim 1, wherein said plurality of tubes include a center expresser tube and a plurality of peripheral processing tubes.
- A multi-lumen rope as set forth in claim 2, wherein said spiral wrap is counterclockwise.
- A multi-lumen rope as set forth in claim 2, wherein said spiral wrap is clockwise.
- A multi-lumen rope as set forth in claim 1, wherein a section of the rope in the middle has no twist.
- A multi-lumen rope as set forth in claim 1, wherein the rope is installed so that both ends twist up to yield maximum tortional stiffness.
- A multi-lumen rope as set forth in claim 1, wherein the rope is installed so that both ends untwist to produce minimum restriction to fluid flow in the tubes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16232099P | 1999-10-28 | 1999-10-28 | |
EP00973959A EP1272277B1 (en) | 1999-10-28 | 2000-10-27 | Circumferentially driven continuous flow centrifuge |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP00973959.0 Division | 2000-10-27 | ||
EP00973959A Division EP1272277B1 (en) | 1999-10-28 | 2000-10-27 | Circumferentially driven continuous flow centrifuge |
Publications (2)
Publication Number | Publication Date |
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EP2243554A2 true EP2243554A2 (en) | 2010-10-27 |
EP2243554A3 EP2243554A3 (en) | 2014-01-15 |
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ID=22585131
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP10172379.9A Withdrawn EP2243554A3 (en) | 1999-10-28 | 2000-10-27 | Multi-lumen rope for continuous flow centrifuge |
EP00973959A Expired - Lifetime EP1272277B1 (en) | 1999-10-28 | 2000-10-27 | Circumferentially driven continuous flow centrifuge |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP00973959A Expired - Lifetime EP1272277B1 (en) | 1999-10-28 | 2000-10-27 | Circumferentially driven continuous flow centrifuge |
Country Status (7)
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EP (2) | EP2243554A3 (en) |
JP (2) | JP5147154B2 (en) |
AT (1) | ATE477057T1 (en) |
DE (1) | DE60044823D1 (en) |
ES (1) | ES2349888T3 (en) |
HK (1) | HK1053804A1 (en) |
WO (1) | WO2001030505A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109759247A (en) * | 2019-03-20 | 2019-05-17 | 尹康康 | A kind of desk centrifuge |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7001322B2 (en) * | 2000-10-04 | 2006-02-21 | Zymequest, Inc. | Multiple processing chamber set and use thereof |
DE10129769A1 (en) * | 2001-06-20 | 2003-01-09 | Fresenius Hemocare Gmbh | Hose assembly and method of making it |
US7651457B2 (en) | 2003-08-04 | 2010-01-26 | Zymequest, Inc. | Expandable processing and expression chamber |
CA2615648A1 (en) * | 2005-07-26 | 2007-02-01 | Zymequest, Inc. | Blood processing device and associated systems and methods |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3586413A (en) | 1969-03-25 | 1971-06-22 | Dale A Adams | Apparatus for providing energy communication between a moving and a stationary terminal |
US4216770A (en) | 1979-02-09 | 1980-08-12 | Baxter Travenol Laboratories, Inc. | Sickle cell therapeutic treatment |
US4389206A (en) | 1980-10-09 | 1983-06-21 | Baxter Travenol Laboratories, Inc. | Centrifugal processing apparatus and rotatable processing bowl apparatus |
US4419089A (en) | 1977-07-19 | 1983-12-06 | The United States Of America As Represented By The Department Of Health And Human Services | Blood cell separator |
US5665048A (en) | 1995-12-22 | 1997-09-09 | Jorgensen; Glen | Circumferentially driven continuous flow centrifuge |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2832374A (en) * | 1955-03-10 | 1958-04-29 | Breeze Corp | Flexible tube assemblies |
US3646972A (en) * | 1970-02-27 | 1972-03-07 | Kabel Metallwerke Ghh | Multitubing system |
US4018304A (en) | 1975-10-08 | 1977-04-19 | Baxter Travenol Laboratories, Inc. | Lubrication system for a centrifugal liquid processing system |
US4425112A (en) | 1976-02-25 | 1984-01-10 | The United States Of America As Represented By The Department Of Health And Human Services | Flow-through centrifuge |
US4221322A (en) | 1977-10-31 | 1980-09-09 | Union Carbide Corporation | Tube guide insert and constraint fittings for compensating rotor |
US4163519A (en) * | 1977-11-01 | 1979-08-07 | Union Carbide Corporation | Compensating rotor |
US4287061A (en) * | 1978-10-26 | 1981-09-01 | National Research Development Corporation | Rotating coil centrifuge |
JPS5680247U (en) * | 1979-11-27 | 1981-06-29 | ||
US4372484A (en) * | 1981-02-04 | 1983-02-08 | Gambro Ab | Device for the separation of a liquid, especially whole blood |
US4459169A (en) * | 1981-03-16 | 1984-07-10 | Baxter Travenol Laboratories, Inc. | Rotatable bowl assembly for centrifugal processing apparatus having a bonded and prewound umbilical system |
JPS61245855A (en) * | 1985-04-22 | 1986-11-01 | Green Cross Corp:The | Continuous blood separation apparatus |
DE3632241A1 (en) * | 1986-09-23 | 1988-06-09 | Fresenius Ag | MULTIPLE HOSE ARRANGEMENT AND METHOD FOR THE PRODUCTION THEREOF |
JPH0790184B2 (en) * | 1987-07-27 | 1995-10-04 | 株式会社ミドリ十字 | Centrifuge container assembly |
US5431814A (en) * | 1993-10-22 | 1995-07-11 | Jorgensen; Glen | Centrifugal filter apparatus and method |
DE19803534C2 (en) * | 1998-01-30 | 1999-11-11 | Fresenius Ag | Centrifuge and line for supplying and / or discharging at least one fluid from the separation unit of a centrifuge to a fixed connection point |
-
2000
- 2000-10-27 JP JP2001532909A patent/JP5147154B2/en not_active Expired - Fee Related
- 2000-10-27 EP EP10172379.9A patent/EP2243554A3/en not_active Withdrawn
- 2000-10-27 DE DE60044823T patent/DE60044823D1/en not_active Expired - Lifetime
- 2000-10-27 EP EP00973959A patent/EP1272277B1/en not_active Expired - Lifetime
- 2000-10-27 WO PCT/US2000/029705 patent/WO2001030505A1/en active Application Filing
- 2000-10-27 ES ES00973959T patent/ES2349888T3/en not_active Expired - Lifetime
- 2000-10-27 AT AT00973959T patent/ATE477057T1/en not_active IP Right Cessation
-
2003
- 2003-07-02 HK HK03104730.4A patent/HK1053804A1/en unknown
-
2010
- 2010-07-21 JP JP2010164388A patent/JP2010284651A/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3586413A (en) | 1969-03-25 | 1971-06-22 | Dale A Adams | Apparatus for providing energy communication between a moving and a stationary terminal |
USRE29738E (en) | 1969-03-25 | 1978-08-22 | Apparatus for providing energy communication between a moving and a stationary terminal | |
US4419089A (en) | 1977-07-19 | 1983-12-06 | The United States Of America As Represented By The Department Of Health And Human Services | Blood cell separator |
US4216770A (en) | 1979-02-09 | 1980-08-12 | Baxter Travenol Laboratories, Inc. | Sickle cell therapeutic treatment |
US4389206A (en) | 1980-10-09 | 1983-06-21 | Baxter Travenol Laboratories, Inc. | Centrifugal processing apparatus and rotatable processing bowl apparatus |
US5665048A (en) | 1995-12-22 | 1997-09-09 | Jorgensen; Glen | Circumferentially driven continuous flow centrifuge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109759247A (en) * | 2019-03-20 | 2019-05-17 | 尹康康 | A kind of desk centrifuge |
Also Published As
Publication number | Publication date |
---|---|
JP5147154B2 (en) | 2013-02-20 |
EP1272277B1 (en) | 2010-08-11 |
ES2349888T3 (en) | 2011-01-12 |
JP2010284651A (en) | 2010-12-24 |
JP2003514645A (en) | 2003-04-22 |
EP1272277A4 (en) | 2005-06-15 |
EP2243554A3 (en) | 2014-01-15 |
WO2001030505A1 (en) | 2001-05-03 |
EP1272277A1 (en) | 2003-01-08 |
HK1053804A1 (en) | 2003-11-07 |
DE60044823D1 (en) | 2010-09-23 |
ATE477057T1 (en) | 2010-08-15 |
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