Centrifugal processing system with direct access drawer

• US 5,362,291 A
• Filed: 02/09/1994
• Issued: 11/08/1994
• Est. Priority Date: 12/23/1991
• Status: Expired due to Fees

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Williamson, Warren P. IV
• Primary Examiner(s): Scherbel, David A.
• Assistant Examiner(s): Till, Terrence R.
• Application Number:
  US08/193,908
• Time in Patent Office: 272 Days
• Field of Search: 210/767, 210/781, 210/782, 312/209, 312/293.1, 312/330.1, 68/23 R, 68/23.3, 68/210, 422/44, 422/72, 494/16, 494/12, 494/17, 494/18, 494/19, 494/20, 494/21
• US Class Current: 494/18
• CPC Class Codes: B04B 2005/045 having annular separation channels
• CPC Class Codes: B04B 2005/0492 with fluid conveying umbilicus between stationary and rotary centrifuge parts
• CPC Class Codes: B04B 5/0428 with flexible receptacles
• CPC Class Codes: B04B 5/0442 with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
• CPC Class Codes: B04B 7/02 Casings; Lids shock absorbers, vibration dampers F16F

Abstract

A drawer-mounted centrifuge provides easy access for loading and unloading disposable processing elements. The centrifuge also includes an umbilicus holder that moves between an operating position and an out-of-the-way position as the drawer opens and closes.

Claims

1. A centrifugation system for separating blood into component parts comprising

a frame enclosing an interior area,

a centrifuge having a mass, and

a base including mounts supporting and structurally isolating the mass of the centrifuge for rotation relative to the frame about a rotational axis, the base including at least one track and being carried for movement relative to the frame generally perpendicular to the rotational axis on the at least one track between a first position, in which the isolated mass of the centrifuge is located within the interior area of the frame and access to the centrifuge is blocked by the frame, and a second position, in which the isolated mass of the centrifuge is located outside the interior area of the frame and access to the centrifuge is permitted.

3. A system according to claim 1 or 2

wherein the frame includes a drawer carried by and movable on the at least one track between a closed position and an opened position, and

wherein the centrifuge base is mounted within the drawer and is located in its first position when the drawer is closed and is located in its second position when the drawer is opened.

4. A system according to claim 3

and further including means for locking the drawer in its closed position.

5. A system according to claim 3

and further including interlock means for preventing opening of drawer when the centrifuge is rotated.

2. A centrifugation system for separating blood into component parts comprising

a frame enclosing an interior area,

a centrifuge having a mass,

a processing chamber removably attachable to the centrifuge for receiving blood to undergo centrifugal separation

a base including mounts supporting and structurally isolating the mass of the centrifuge for rotation relative to the frame about a rotational axis, the base including at least one track and being carried for movement relative to the frame generally perpendicular the rotational axis on the at least one track between a first position, in which the isolated mass of the centrifuge is located within the interior area of the frame and access to the centrifuge is blocked by the frame, and a second position, in which the isolated mass of the centrifuge is located outside the interior area of the frame and access to the centrifuge is permitted for attaching and removing the processing chamber.

6. A centrifugation system comprising

a frame enclosing an interior area,

a centrifuge, means for rotating the centrifuge about an axis,

a processing chamber removably attachable to the centrifuge,

an umbilicus for conveying fluid into the processing chamber to undergo centrifugal separation during rotation of the centrifuge,

a base supporting the centrifuge on the frame and including

a holder releasably receiving the umbilicus, the holder being moveable between an operating position for orienting the umbilicus in a prescribed adjacent relationship with the centrifuge and an nonoperating position spaced away from centrifuge,

at least one track supporting the base for movement between an enclosed position, in which the centrifuge and holder are located within the interior area of the frame and access to the centrifuge and the holder is blocked, and an exposed position, in which the centrifuge and holder are located outside the interior area of the frame and access to the centrifuge and the holder are permitted for attaching and removing the processing chamber and receiving and removing the umbilicus, and

means for moving the holder toward its operating position during movement of the base toward the enclosed position and for moving the holder toward its nonoperating position during movement of the base toward the exposed position.

7. A system according to claim 6

and further including locking means for retaining the holder in its operating position when the base is in its enclosed position.

8. A system according to claim 7

wherein the locking means is freed in response to movement of the base from its enclosed position toward its exposed position.

9. A system according to claim 6

and further including force dampening mounts between the base and the centrifuge and the holder for isolating the base from vibration and oscillation of the centrifuge and holder during rotation of the centrifuge.

10. A system according to claim 6

wherein the at least one track moves the base in a direction generally perpendicular to the rotation axis of the centrifuge, and

wherein the means for moving the holder pivots the holder generally axially of the rotational axis.

11. A system according to claim 6

wherein the frame includes a drawer carried by and movable on the at least one track between a closed position and an opened position, and

wherein the centrifuge base is mounted within the drawer and is located in the enclosed position when the drawer is closed and is located in the exposed position when the drawer is opened.

12. A system according to claim 11

wherein the drawer has an open top to allow user access to the centrifuge and the holder when the drawer is opened.

13. A system according to claim 12

wherein the holder orients the umbilicus in a prescribed relationship above the centrifuge when in its operating position and is spaced away from centrifuge when in its nonoperating position to allow access to the centrifuge through the open top of the drawer when the drawer is opened.

14. A system according to claim 11

wherein the drawer moves the base in a direction generally perpendicular to the rotation axis of the centrifuge, and

wherein the means for moving the holder pivots the holder generally axially of the rotational axis during movement of the drawer.

15. A system according to claim 6

wherein the means for moving the holder includes first means for biasing the holder toward its nonoperating position and second means for retaining the holder means in its operating position against the force of the first means when the base is in its enclosed position.

16. A system according to claim 15

wherein the second means includes locking means for retaining the holder in its operating position when the base is in its enclosed position and means for releasing the locking means in response to movement of the base from its enclosed position toward its exposed position to allow the first means to urge the holder towards its nonoperating position.