Fluid processing system with flow control manifold

• US 4,610,781 A
• Filed: 12/30/1983
• Issued: 09/09/1986
• Est. Priority Date: 12/30/1983
• Status: Expired due to Fees

• Current Assignee: Baxter Travenol Laboratories Incorporated
• Original Assignee: Baxter Travenol Laboratories Incorporated
• Inventors: Bilstad, Arnold C., Kruger, Robert J.
• Primary Examiner(s): Spear, Frank
• Application Number:
  US06/567,363
• Time in Patent Office: 984 Days
• Field of Search: 210/96.2, 210/929, 210/433.2, 210/927, 210/321.1, 210/321.2, 210/321.3, 210/85, 604/4, 604/6, 137/266
• US Class Current: 210/85
• CPC Class Codes: A61M 1/303 having a reservoir for treated blood to be returned
• CPC Class Codes: A61M 1/3496 Plasmapheresis; Leucopheresis; Lymphopheresis A61M1/3472 takes precedence
• CPC Class Codes: A61M 1/3603 in the same direction
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 2205/6036 characterised by physical shape, e.g. array of activating switches
• CPC Class Codes: A61M 2205/6063 Optical identification systems
• CPC Class Codes: A61M 2209/082 Mounting brackets, arm supports for equipment

Abstract

A fluid processing system includes an integral flow control and distribution manifold for establishing fluid communication between conduit segments of the system. In use, the fluid manifold is received in an actuator head of an associated processor apparatus, wherein valving elements selectively crimp valving passageways in the manifold to perform the procedure. The fluid circuit of the system accommodates multiple procedures, obviating the need to stock multiple systems and enabling manufacturing economics to be realized from higher production volumes.

Claims

1. A fluid processing system comprising a fluid circuit including

a plurality of tubing segments each having an end portion, and

a fluid distribtuion manifold integrally attached in flow communication with each of said tubing segments, said manifold including

a pair of fluid impermeable sheets having opposite side edges peripherally sealed together to define a manifold interior,

means for sealingly engaging said end portion of each of said tubing segments in a parallel spaced relationship along one of said sealed side edges, so that said tubing segments all communicate with said manifold interior, and

means for defining a plurality of baffles extending within said manifold interior between adjacent, sealingly engaged tubing segment end portions, said baffles extending from said one sealed side edge toward the opposite one of said sealed side edges to compartmentalize said manifold interior into adjacent fluid chambers, each associated with at least one of said flexible tubing segments, said baffles each having an end located at a generally equal distance from said opposite sealed side edge to define between said baffle ends and said opposite sealed side edge a plurality of mutually aligned passageways normally opening fluid communication between said adjacent fluid chambers and, thus, between associated tubing segments, and

a processing apparatus including

a receptacle for releasably receiving said opposite sealed side edge of said manifold with said tubing segments extending from said one sealed side edge externally of said receptacle,

pumping means attachable to at least one of said externally extending tubing segments to pump fluid through said fluid circuit,

a plurality of valve actuator assemblies located within said receptacle, each of said valve actuator assemblies being aligned with one of said mutually aligned manifold passageways and being operative for selectively closing said aligned passageway to block fluid communication between the adjacent fluid chambers, and

process control means for actuating each of said valve actuator assemblies in a predetermined pattern to control fluid flow between fluid chambers within said manifold, thereby controlling fluid flow through said fluid circuit to achieve a desired fluid processing procedure,

said fluid manifold further including indicia thereon indicative of the procedure, said control means being responsive to said indicia.

2. A fluid flow system as defined in claim 1 wherein said sheets are formed of plastic material.

3. A fluid flow system as defined in claim 1 wherein one of said sheets is relatively rigid.

4. A fluid flow system as defined in claim 1 wherein said manifold is generally rectangular in form.

5. Processing apparatus as defined in claim 1 wherein said valve actuators comprise electrically actuated solenoids.

6. Processing apparatus as defined in claim 1 wherein said receptacle includes index means for locking the fluid manifold in position relative to the valve actuator.

7. Processing apparatus as defined in claim 1 wherein said indicia comprise a plurality of apertures in the manifold, and said control means include electrical recognition means responsive to said apertures.