US3706412A - Pressure-actuated centrifuge chuck and centrifuge incorporating the same - Google Patents
Pressure-actuated centrifuge chuck and centrifuge incorporating the same Download PDFInfo
- Publication number
- US3706412A US3706412A US166865A US3706412DA US3706412A US 3706412 A US3706412 A US 3706412A US 166865 A US166865 A US 166865A US 3706412D A US3706412D A US 3706412DA US 3706412 A US3706412 A US 3706412A
- Authority
- US
- United States
- Prior art keywords
- rotor
- spindle
- chuck
- fluid
- centrifuge
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/11—Vacuum
Definitions
- Bold 1/26 tron 15 by way of a fluid flow path extending through a .233/1 B, l R, l A, l C, 23 A,
- Means responsive tothe pressure in the system may be used to control the operation of the motor driving the [58] Field of Search [56] References Cited spindle and rotor to ensure locking of the rotor prior to startup.
- This invention relates to chucks, and more particularly to chucks mounted for rotation andto centrifuges embodying such chucks.
- centrifuging liquids such as blood
- a simple chuck which can hold the centrifuge rotor in proper alignment and which provides rapid and reliable engagement and disengagement with the rotor.
- the technician who performs the processing steps should be as free as possible from engineering details. This,. in turn, means that he should be able to place a centrifuge rotor in a chuck to attain automatic registry both with respect to axial alignment and perpendicular alignment and to effect the locking of the rotor in the chuck with the minimum number of motions, preferably only one.
- atmospheric pressure is employed to hold the centrifuge rotor securely to the chuck by providing a vacuum under most of the area under the base if the rotor. Axial and perpendicular of is attained by registration surfaces. Provision is made to evacuate the area under the rotor base through a hollow spindle. Means may also be provided to ensure that the evacuation has been attained prior to startup.
- FIG. 1 is a vertical cross section of the chuck andone embodiment of its associated spindle of this invention
- FIG. 2 is a cross section through a portion of the chuck body taken along plane 22 ofFIG. l; i
- FIG. 3 is a somewhat simplified side elevation of the entire equipment including safeguard means associated with centrifuge startup;
- FIG. 4 is a vertical cross section of the chuck and another embodiment of its associated spindle.
- the centrifuge rotor is mounted on a chuck 11 which in turn is affixed to a partially hollow spindle 12 having associated therewith fluid communication means 13 which provide alternative connections, through fluid flow control means 14, with a vacuum pump (or reservoir) or the atmosphere.
- the spindle is rotated by a suitable driving means 15.
- the centrifuge rotor 10 is typically formed of a suitable plastic material shaped on its base to have a flat peripheral surface 20, a downwardly inclined surface 21 forming a major portion of the base and a central circular alignment surface 22 ⁇ . Blood to be processed is introduced through a stationary inlet line 23 while the low-density fractions separated from the blood are forced .outwardly through passage 24 defined between stationary walls 25 and the wall 26.
- the actual internal design of the rotor is not part of the invention; and only a portion of it is illustrated by way of explanation.
- the chuck 11 is formed of a chuck body 30, the upper surface of which is contoured to provide a flat peripheral surface 31 adapted to engage the corresponding flat peripheral surface 20 of the rotor and through a sealing ring 32 to provide a fluid-tight seal.
- the sealing ring 32 is preferably'a large O-ring soft enough to allow contact between these perp'endicularity registration surfaces 20 and 31.
- the chuck body also has a downwardly inclined surface 33 essentially corresponding in surface area to the inclined surface 21 of the rotor, but spaced therefrom to define an evacuatable spacing 34 between the rotor base and the chuck body.
- the chuck body has a shallow central well 35 sized to correspond in diameter to the diameter of the circular alignment surface 22 of the rotor. The depth of the well 35 is such that a fluid passage 36 is defined below the rotor alignment disk 22. This fluid passage 36 is in communication with space 34 through a vent notch 37.
- the chuck body 30 is mounted for rotation on spindle 12 which comprises a hollow section 40 extending to at least that level where it has a port 41 providing a fluid connection with fluid communication means 13.
- the bottom solid section 42 of the spindle is adapted for attachment to driving means 15 as explained below.
- the fluid passage 43 within the spindle opens out into fluid passage 36.
- the outside diameter of the spindle is somewhat less than the diameter of well 35'thus providing an annular shoulder 44 around the top edge of spindle 40.
- the spindle, below the chuck 11, is encased in a heavy walled tubing 48 which serves as a support for an upper bearing means 49 and a lower bearing means 50.
- these components are comprised of a rotating inner spindle bearing 51, a ball bearing 52, an outer stationary bearing ring 53 and an annular ring 54 formed of an elastomeric material serving as a spindle bearing flexible mount to permit flexible accommodation to any unbalance of the rotating parts and to reduce the load on the bearing means 49.
- a fluid conduit 64 extends through the heavy-walled tubing 48 and it is welded thereto to form a fluid-tight seal.
- the fluid conduit 64 terminates within the fluid flow control means 14 which is shown in FIG. 1 to be'a three-way valve 65 connected by way of line 66, having a vacuum gage 67, to a vacuum tank and/or vacuum pump 68 (FIG. 3) and by way of line 69 to the atmosphere. In its third alternative position the valve 65 is closed to both lines 66 and 69 thus providing a closed vacuum system within the spindle and chuck.
- the lower bearing means 50 which does not require an annular elastomeric ring comparable to 54 of the I060ll 0039 upper bearing means, is held in place by a retainer ring 70.
- a key'71 is provided the pulley-spindle assembly.
- the pulley is driven by belt 75 which in turn is driven by any suitable means such as an electric motor 76 (FIG. 3).
- the centrifuge may be started.
- the valve 65 may be turned to completely isolate the vacuum system or it may be left in a position to provide continuous fluid communication between the chuck-spindle vacuum system and the vacuum tank and/or pump. By creating a pressure differential across the rotor from top to base, it is possible to use the atmospheric pressure as a force to hold the rotor in the chuck during centrifuging. After the motor has been stopped and the centrifuge rotor comes to rest, the valve 65 is turned to open the vacuum system to the atmosphere by way of line 68, thus destroying this pressure differential and making it possible to lift the rotor from the chuck. Thus it will be seen that once the rotor is placed on the chuck, it requires but one operation, i.e., turning valve 65, to engage the rotor to the chuck; and one operation to disengage it.
- FIG. 3 illustrates an embodiment of the apparatus of this invention which provides a safeguard against starting the centrifuge when the vacuum in the chuck-spindle vacuum system is insufficient to hold the centrifuge rotor.
- a vacuum actuated switch 80 such as amicroswitch actuated by a flexible metal bellows connected to the vacuum line, is connected by conduit 81 to conduit 64 and through suitable lead lines 82 to motor 76.
- the vacuum switch 80 is preset to be actuated at pressures equivalent to or below the pressure required in the vacuum system for holding the rotor. Through lines 82 the switch in turn permits the motor 76 to be started such as by closing a circuit between a power supply and the motor. Thus if, and only if, there is a sufficient vacuum attained in the system the centrifuge may be started. If a leak occurs in the vacuum system, then the vacuum switch 80 will serve to stop the motor.
- the apparatus illustrated in FIG. 4 embodies a modification in the spindle and in the spindle drive, and it incorporates means to cool the drive motor, the shaft and the heavy casing surrounding the centrifuge.
- like reference numerals are used to identify like components in FIG. 1.
- the spindle 12 of FIG. 4 is a shaft 85 which is hollow throughout its length thus defining a fluid passage 86 which terminates in a fluid .centrifuge rotor is placed on the chuck body, axial rechamber 87 defined within a housing 88 which provides a support for the lower bearing means 50.
- Fluid conduit 64 extends through the bottom wall of housing 88 and it is welded thereto to form a fluid-tight seal.
- the fluid communication between the vacuum source and the evacuatable spacing 34 therefor comprises fluid conduit 64, fluid chamber 87, and passages 86, 36 and 37.
- the spindle shaft is driven by motor by being connected directly thereto.
- a fan 96 two bladesof which are shown, is also mounted on shaft 85 by suitable means such as by press fitting.
- a heavy casing 97 affixed to the upper end of housing 88, surrounds the motor and at least a portion of the centrifuge rotor 10. This casing comprises a lower, smaller-diameter section 98 and an upper, larger-diameter section 99 joined and made integral with the lower section through an annular section 100.
- the upper section 99 of the'casing is divided into a chuck/rotor chamber section 101 and a fan chamber section 102 by means of a horizontal, heavy-walled divider 103, which may be integral with the wall of section 99 and which provides the necessary support for upper bearing means 49.
- the lower casing 98 defines a motor cooling chamber 104 which opens into thefan chamber section 102.
- a plurality of air inlet ports 105 are spaced around the lower end of casing section 98 and a plurality of air discharge ports 106 are located in the wall of the upper casing section 99 providing for the discharge of air from the fan chamber section 102.
- the fan When the spindle rotates, the fan is also rotated and cooling air is drawn in through inlet ports 105 to sweep around the motor, the spindle and the bearing means.
- the casing 97 is also cooled which means that the environment about the centrifuge chuck and rotor is also controlled.
- FIG. 4 The operation of the embodiment of FIG. 4 is essentially the same as that for the apparatus of FIG. 1 and the safeguard mechanismshown in FIG. 3 is applicable to the apparatus of FIG. 4.
- a centrifuge in which a rotor is held in a spinning comprising in combination a. a rotor, the base of which is contoured to have a flat peripheral ,rotor registration surface, a
- sealing means adapted to form a fluid tight seal between the peripheral registration surfaces of said rotor and said chuck;
- a rotatable spindle adapted to support and rotate said chuck
- fluid communication means connecting said evacuating means and said evacuatable space defined between said rotor base and said chuck surface.
- a centrifuge in accordance with claim 1 wherein said fluid communication means comprises a fluid passage-within said spindle, means to define a fluid passage around a portion of said spindle, port means connecting said fluid passage in said spindle with said fluid passage around said spindle, and means to connect said fluid passage with said evacuating means.
- a centrifuge in accordance with claim 1 including switch means responsive to pressures within said fluid communication means, said switch means being adapted to control the operation of said driving means.
- a centrifuge in which a rotor is held in a chuck for spinning comprising in combination a. a rotor, the base of which is contoured to have a flat peripheral rotor registration surface, a downwardly inclined surface-and a central circular alignment surface;
- a chuck the upper surface of which is contoured to have a flat peripheral chuck registration surface substantially corresponding in size to said rotor registration surface, a downwardly inclined surface substantially corresponding in size and area to said downwardly inclined surface of said rotor base. and defining therewith an evacuatable space, and a shallow central well corresponding in diameter to said central circular alignment surface of said rotor and defining with said alignment surface an auxiliary evacuatable spacing in fluid communication with said evacuatable spacing;
- sealing means adapted to form a fluid tight seal between the peripheral registration surfaces of said rotor and said chuck;
- a rotatable spindle adapted to support and rotate said chuck and defining through at least a portion of its length an internal fluid passage opening at its top end into said auxiliary evacuatable spacing;
- heavy-walled tubing means surrounding said spindle below said chuck and defining around said spindle an annular spacing
- a port in the wall of said spindle providing fluid communication between said internal fluid passage in said spindle and said fluid tight annular passage;
- control means in said fluid communication means and being adapted to connect said evacuatable space through said auxiliary evacuatable space, said internal fluid passage in said spindle, said annular fluid passage and said fluid communication means with either said evacuating means or the atmosphere;
- driving means adapted to rotate said spindle.
- a centrifuge in accordance with claim 7 including switch means responsive to pressures within said fluid communication means, said switch means being adapted to control the operation of said driving means whereby said driving means may be actuated only if the pressure in said evacuatable spacing is below a predetermined level.
- a centrifuge in which a rotor is held in a chuck for spinning, comprising in combination a. a rotor, the base of which is contoured to have a flat peripheral rotor registration surface, a downwardly inclined surface and a central circular alignment surface;
- a chuck the upper surface of which is contoured to have a flat peripheral chuck registration surface substantially corresponding in size to said rotor registration surface, a downwardly inclined surface substantially corresponding in size and area to said downwardly inclined surface of said rotor base and defining therewith an evacuatable space, and a shallow central well corresponding in diameter to said central circular alignment surface of said rotor and defining with said disk an auxiliary evacuatable spacing in fluid communication with said evacuatable spacing;
- sealing means adapted to' form a fluid tight seal between the peripheral registration surfaces of said rotor and said chuck;
- a rotatable spindle adapted to support and rotate said chuck and defining through its length an internal fluid passage opening at its top end into said auxiliary evacuatable spacing;
- housing means defining a fluid chamber around the bottom end of said spindle, in fluid communication with said internal fluid passage of said spindle and providing lower spindle bearing support means;
- fluid communication means connecting said fluid chamber with said evacuating means and with the atmosphere;
- fluid flow control means in said fluid communication means and being adapted to connect said evacuatable space through said auxiliary evacuatable space, said internal fluid passag in said spindle, said fluid chamber and said fluid communication means with either said evacuating means or the atmosphere;
- motor means directly connected to said spindle and mounted thereon adapted to rotate said spindle;
Abstract
Description
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16686571A | 1971-07-28 | 1971-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3706412A true US3706412A (en) | 1972-12-19 |
Family
ID=22604993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US166865A Expired - Lifetime US3706412A (en) | 1971-07-28 | 1971-07-28 | Pressure-actuated centrifuge chuck and centrifuge incorporating the same |
Country Status (6)
Country | Link |
---|---|
US (1) | US3706412A (en) |
CA (1) | CA960197A (en) |
DE (1) | DE2234168A1 (en) |
FR (1) | FR2147275B3 (en) |
GB (1) | GB1381155A (en) |
IT (1) | IT964816B (en) |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3944133A (en) * | 1972-12-26 | 1976-03-16 | Rohe Scientific Corporation | Automated centrifuge |
DE2522260A1 (en) * | 1975-05-20 | 1976-12-02 | Hofmann Maschf Geb | DEVICE FOR BALANCING MACHINES FOR CLAMPING AND CENTERING AXLESS ROTATING BODIES |
US4183545A (en) * | 1978-07-28 | 1980-01-15 | Advanced Simiconductor Materials/America | Rotary vacuum-chuck using no rotary union |
US4767396A (en) * | 1987-03-03 | 1988-08-30 | Haemonetics Corporation | Method and apparatus for processing biological fluids |
WO1989001827A1 (en) * | 1987-09-04 | 1989-03-09 | Haemonetics Corporation | Portable centrifuge apparatus |
US4982153A (en) * | 1989-02-06 | 1991-01-01 | Cray Research, Inc. | Method and apparatus for cooling an integrated circuit chip during testing |
US5062826A (en) * | 1989-07-14 | 1991-11-05 | Marco Mantovani | Device for locking a blood centrifugation cell on a chuck |
US5312319A (en) * | 1992-04-29 | 1994-05-17 | Cobe Laboratories, Inc. | Centrifuge having a single swing arm for retaining a stator tube |
US5342279A (en) * | 1992-08-18 | 1994-08-30 | Alfa Laval Separation Inc. | Decanter centrifuge having dual motor drive |
US5591113A (en) * | 1994-10-31 | 1997-01-07 | Cobe Laboratories, Inc. | Centrifugally assisted centrifuge bowl mount |
US5658231A (en) * | 1995-09-21 | 1997-08-19 | Haemonetics Corporation | Mechanism for securing a separation bowl to a mechanical chuck |
US5733253A (en) * | 1994-10-13 | 1998-03-31 | Transfusion Technologies Corporation | Fluid separation system |
WO1998030304A1 (en) * | 1997-01-08 | 1998-07-16 | Bristol-Myers Squibb Company | A centrifuge apparatus with temperature control means |
US5851169A (en) * | 1996-01-31 | 1998-12-22 | Medtronic Electromedics, Inc. | Rotary plate and bowl clamp for blood centrifuge |
US5873810A (en) * | 1995-12-07 | 1999-02-23 | Bristol-Myers Squibb Company | Centrifuge apparatus with container locking means |
US5964690A (en) * | 1997-03-19 | 1999-10-12 | Medtronic, Inc. | Mechanism for fixing a blood centrifuge bowl to a rotating spindle |
US6132598A (en) * | 1997-01-08 | 2000-10-17 | Bristol-Myers Squibb Company | Centrifuge apparatus with temperature control means |
US20030064004A1 (en) * | 2001-09-17 | 2003-04-03 | Tomas Agren | Rotary drive in an instrument for processing microscale liquid sample volumes |
US20040147865A1 (en) * | 1994-10-13 | 2004-07-29 | Cianci James P. | System and method for processing blood |
US6796106B1 (en) | 2001-08-24 | 2004-09-28 | Drago Bulich | Rotating vacuum assisted carousel for packaging cable |
US20060199720A1 (en) * | 2005-01-21 | 2006-09-07 | Tien-Chu Juan | Plasmapheresis centrifuge bowl |
US20070213191A1 (en) * | 2006-03-07 | 2007-09-13 | Jacques Chammas | Rotor defining a fluid separation chamber of varying volume |
US20080153686A1 (en) * | 2005-01-25 | 2008-06-26 | Jean-Denis Rochat | Disposable Device for the Continuous Centrifugal Separation of a Physiological Fluid |
US8986238B2 (en) | 2012-08-15 | 2015-03-24 | Cyclone Medtech, Inc. | Systems and methods for salvaging red blood cells for autotransfusion |
US10683478B1 (en) * | 2019-05-16 | 2020-06-16 | Shenzhen Eureka biotechnology Co. Ltd | Device and system for processing a liquid sample containing cells |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008014734U1 (en) * | 2008-11-06 | 2010-03-25 | Hengst Gmbh & Co.Kg | centrifugal |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US581205A (en) * | 1897-04-20 | hewitt | ||
US2213107A (en) * | 1938-11-28 | 1940-08-27 | Research Corp | Ultracentrifuge |
US2917229A (en) * | 1958-04-17 | 1959-12-15 | Lourdes Instr Company | Refrigerated centrifuge |
US3527402A (en) * | 1969-02-05 | 1970-09-08 | Illinois Tool Works | Spindle assembly |
US3581981A (en) * | 1945-03-02 | 1971-06-01 | Cryogenic Technology Inc | Centrifuge chuck |
-
1971
- 1971-07-28 US US166865A patent/US3706412A/en not_active Expired - Lifetime
-
1972
- 1972-07-05 CA CA146,441A patent/CA960197A/en not_active Expired
- 1972-07-12 DE DE2234168A patent/DE2234168A1/en active Pending
- 1972-07-27 IT IT69452/72A patent/IT964816B/en active
- 1972-07-27 FR FR7227158A patent/FR2147275B3/fr not_active Expired
- 1972-07-28 GB GB3551972A patent/GB1381155A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US581205A (en) * | 1897-04-20 | hewitt | ||
US2213107A (en) * | 1938-11-28 | 1940-08-27 | Research Corp | Ultracentrifuge |
US3581981A (en) * | 1945-03-02 | 1971-06-01 | Cryogenic Technology Inc | Centrifuge chuck |
US2917229A (en) * | 1958-04-17 | 1959-12-15 | Lourdes Instr Company | Refrigerated centrifuge |
US3527402A (en) * | 1969-02-05 | 1970-09-08 | Illinois Tool Works | Spindle assembly |
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3944133A (en) * | 1972-12-26 | 1976-03-16 | Rohe Scientific Corporation | Automated centrifuge |
DE2522260A1 (en) * | 1975-05-20 | 1976-12-02 | Hofmann Maschf Geb | DEVICE FOR BALANCING MACHINES FOR CLAMPING AND CENTERING AXLESS ROTATING BODIES |
US4031760A (en) * | 1975-05-20 | 1977-06-28 | Gebr. Hofmann Kg | Apparatus for balancing machines for chucking and centering of anaxial bodies of rotation |
US4183545A (en) * | 1978-07-28 | 1980-01-15 | Advanced Simiconductor Materials/America | Rotary vacuum-chuck using no rotary union |
US4767396A (en) * | 1987-03-03 | 1988-08-30 | Haemonetics Corporation | Method and apparatus for processing biological fluids |
WO1989001827A1 (en) * | 1987-09-04 | 1989-03-09 | Haemonetics Corporation | Portable centrifuge apparatus |
US4889524A (en) * | 1987-09-04 | 1989-12-26 | Haemonetics Corporation | Portable centrifuge apparatus |
US4982153A (en) * | 1989-02-06 | 1991-01-01 | Cray Research, Inc. | Method and apparatus for cooling an integrated circuit chip during testing |
US5062826A (en) * | 1989-07-14 | 1991-11-05 | Marco Mantovani | Device for locking a blood centrifugation cell on a chuck |
US5312319A (en) * | 1992-04-29 | 1994-05-17 | Cobe Laboratories, Inc. | Centrifuge having a single swing arm for retaining a stator tube |
US5342279A (en) * | 1992-08-18 | 1994-08-30 | Alfa Laval Separation Inc. | Decanter centrifuge having dual motor drive |
US7332125B2 (en) | 1994-10-13 | 2008-02-19 | Haemonetics Corporation | System and method for processing blood |
US20040147865A1 (en) * | 1994-10-13 | 2004-07-29 | Cianci James P. | System and method for processing blood |
US5733253A (en) * | 1994-10-13 | 1998-03-31 | Transfusion Technologies Corporation | Fluid separation system |
US7452322B2 (en) | 1994-10-13 | 2008-11-18 | Haemonetics Corporation | Rotor with elastic diaphragm for liquid-separation system |
US5591113A (en) * | 1994-10-31 | 1997-01-07 | Cobe Laboratories, Inc. | Centrifugally assisted centrifuge bowl mount |
US5658231A (en) * | 1995-09-21 | 1997-08-19 | Haemonetics Corporation | Mechanism for securing a separation bowl to a mechanical chuck |
US5873810A (en) * | 1995-12-07 | 1999-02-23 | Bristol-Myers Squibb Company | Centrifuge apparatus with container locking means |
US5851169A (en) * | 1996-01-31 | 1998-12-22 | Medtronic Electromedics, Inc. | Rotary plate and bowl clamp for blood centrifuge |
US6132598A (en) * | 1997-01-08 | 2000-10-17 | Bristol-Myers Squibb Company | Centrifuge apparatus with temperature control means |
WO1998030304A1 (en) * | 1997-01-08 | 1998-07-16 | Bristol-Myers Squibb Company | A centrifuge apparatus with temperature control means |
US5964690A (en) * | 1997-03-19 | 1999-10-12 | Medtronic, Inc. | Mechanism for fixing a blood centrifuge bowl to a rotating spindle |
US6796106B1 (en) | 2001-08-24 | 2004-09-28 | Drago Bulich | Rotating vacuum assisted carousel for packaging cable |
US20050006893A1 (en) * | 2001-08-24 | 2005-01-13 | Drago Bulich | Rotating vacuum assisted carousel for packaging cable |
US7021674B2 (en) | 2001-08-24 | 2006-04-04 | Drago Bulich | Rotatable vacuum coupling |
US20030064004A1 (en) * | 2001-09-17 | 2003-04-03 | Tomas Agren | Rotary drive in an instrument for processing microscale liquid sample volumes |
US7169360B2 (en) * | 2001-09-17 | 2007-01-30 | Gyros Ab | Rotary drive in an instrument for processing microscale liquid sample volumes |
US20060199720A1 (en) * | 2005-01-21 | 2006-09-07 | Tien-Chu Juan | Plasmapheresis centrifuge bowl |
US20080153686A1 (en) * | 2005-01-25 | 2008-06-26 | Jean-Denis Rochat | Disposable Device for the Continuous Centrifugal Separation of a Physiological Fluid |
US8070664B2 (en) * | 2005-01-25 | 2011-12-06 | Jean-Denis Rochat | Disposable device for the continuous centrifugal separation of a physiological fluid |
US8348823B2 (en) | 2005-01-25 | 2013-01-08 | Jean-Denis Rochat | Disposable device for the continuous centrifugal separation of a physiological fluid |
US20070213191A1 (en) * | 2006-03-07 | 2007-09-13 | Jacques Chammas | Rotor defining a fluid separation chamber of varying volume |
US7998052B2 (en) | 2006-03-07 | 2011-08-16 | Jacques Chammas | Rotor defining a fluid separation chamber of varying volume |
US20110237418A1 (en) * | 2006-03-07 | 2011-09-29 | Jacques Chammas | Rotor defining a fluid separation chamber of varying volume |
US8986238B2 (en) | 2012-08-15 | 2015-03-24 | Cyclone Medtech, Inc. | Systems and methods for salvaging red blood cells for autotransfusion |
US10076595B2 (en) | 2012-08-15 | 2018-09-18 | Cyclone Medtech, Inc. | Systems and methods for blood recovery from absorbent surgical materials |
US10683478B1 (en) * | 2019-05-16 | 2020-06-16 | Shenzhen Eureka biotechnology Co. Ltd | Device and system for processing a liquid sample containing cells |
Also Published As
Publication number | Publication date |
---|---|
CA960197A (en) | 1974-12-31 |
IT964816B (en) | 1974-01-31 |
FR2147275A1 (en) | 1973-03-09 |
GB1381155A (en) | 1975-01-22 |
FR2147275B3 (en) | 1975-09-05 |
DE2234168A1 (en) | 1973-02-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AMERICAN HOSPITAL SPPLY CORPORATION, ONE AMERICAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HAEMONETICS CORPORATION, A CORP. OF DE.;REEL/FRAME:004483/0821 Effective date: 19850514 |
|
AS | Assignment |
Owner name: FLEET NATIONAL BANK, A NATIONAL BANKING ASSOCIATIO Free format text: SECURITY INTEREST;ASSIGNOR:LATHAM LABS, INC., A CORP. OF MA.;REEL/FRAME:004520/0794 Owner name: FLEET CREDIT CORPORATION Free format text: SECURITY INTEREST;ASSIGNOR:LATHAM LABS, INC., A CORP. OF MA.;REEL/FRAME:004520/0794 |
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Owner name: HAEMONETICS CORPORATION, A MASSACHUSETTS CORP.,STA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FLEET NATIONAL BANK;REEL/FRAME:004598/0821 Effective date: 19860601 Owner name: HAEMONETICS CORPORATION, A MASSACHUSETTS CORP. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FLEET NATIONAL BANK;REEL/FRAME:004598/0821 Effective date: 19860601 |