Blood separation chamber with preformed blood flow passages and centralized connection to external tubing

• US 6,800,054 B2
• Filed: 05/15/2003
• Issued: 10/05/2004
• Est. Priority Date: 09/03/1999
• Status: Expired due to Term

• Current Assignee: Fenwal Incorporated (Fresenius SE & Co. KGaA)
• Original Assignee: Baxter International Inc.
• Inventors: Odak, Sanjay V., Rondeau, Georges E, Joie, Michel L. T., Westberg, Tom, Smith, Kelly B
• Primary Examiner(s): KIM, SUN U
• Application Number:
  US10/438,953
• Publication Number:
  US 20030203802A1
• Time in Patent Office: 509 Days
• Field of Search: 494/41, 494/43, 494/45, 494/50, 494/65, 494/67, 494/39
• US Class Current: 494/43
• CPC Class Codes: A61M 1/0209 Multiple bag systems for separating or storing blood components
• CPC Class Codes: A61M 1/362227 the interface providing means for actuating on functional elements of the cassette, e.g. plungers
• CPC Class Codes: A61M 1/36225 with blood pumping means or components thereof
• CPC Class Codes: A61M 1/362261 at least one cassette surface or portion thereof being flexible, e.g. the cassette having a rigid base portion with preformed channels and being covered with a foil
• CPC Class Codes: A61M 1/362264 the filter being a blood filter
• CPC Class Codes: A61M 1/362265 Details of valves
• CPC Class Codes: A61M 1/362266 Means for adding solutions or substances to the blood
• CPC Class Codes: A61M 1/3696 with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
• CPC Class Codes: A61M 1/38 Removing constituents from donor blood and storing or returning remainder to body , e.g. for transfusion
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 2230/30 Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: B01D 21/0012 Settling tanks making use of filters, e.g. by floating layers of particulate material
• CPC Class Codes: B01D 2221/08 Mobile separation devices
• CPC Class Codes: B01D 2221/10 Separation devices for use in medical, pharmaceutical or laboratory applications, e.g. separating amalgam from dental treatment residues
• 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 5/0442 with means for adding or withdrawing liquid substances during the centrifugation, e.g. continuous centrifugation
• CPC Class Codes: B04B 7/00 Elements of centrifuges drives B04B9/00; feeding, charging, or discharging appurtenances or devices B04B11/00

Abstract

A blood separation chamber comprises a base that includes formed walls that define a hub. A separation channel extends about the hub. A flow passage extends between the hub and the separation channel. The hub enables attachment of external tubing to convey blood to and from the separation channel through the hub.

Claims

1. A blood separation chamber comprising

a formed body, which, in use, rotates about a rotational axis,

a first interior wall formed on the body, which extends circumferentially about the rotational axis to define a hub,

inside and outside wails formed on the body, which extend circumferentially about the hub in a spaced apart relationship to define between them a separation channel,

second interior walls formed on the body, which extend radially from the hub in a spaced apart relationship to define between them a plurality of passages that communicate with the separation channel to direct blood between the hub and the separation channel, and

a connector formed on the body to couple exterior tubing to the hub in communication with the passages to convey blood to or from the plurality of passages during rotation of the formed body, said connector comprising a receptacle and a plurality of connection nipples that occupy the receptacle, each connection nipple communicating with at least one of said passages

an umbilicus carrying a plurality of lumens, the umbilicus including a mount sized and configured to be plugged into the receptacle, the mount including lumens that fit about the connection nipples when the mount is plugged into the receptacle, and

a keyed connection assembly associated with the mount and the receptacle permitting the mount to be plugged into the receptacle in only one orientation, to assure that the plurality of lumens in the umbilicus communicate with the plurality of passages in a predetermined arrangement.

2. A blood separation chamber according to claim 1, said umbilicus imparting rotation to said chamber.

3. A blood separation chamber according to claim 2, wherein said umbilicus is driven by a means for rotating said umbilicus.