DIALYZING LIQUID-COLLECTING CONTAINER

• US 3,640,388 A
• Filed: 08/20/1970
• Issued: 02/08/1972
• Est. Priority Date: 08/20/1970
• Status: Expired due to Term

• Current Assignee: Andres Ferrari
• Original Assignee: Andres Ferrari
• Inventors: Ferrari, Andres
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/065,540
• Time in Patent Office: 537 Days
• Field of Search: 210/94,22,321 128/2R,2F,214R,DIG.5 23/258.5 73/425.6
• US Class Current: 210/94
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150099 by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
• CPC Class Codes: A61B 5/150229 Pumps for assisting the blood sampling
• CPC Class Codes: A61B 5/150251 Collection chamber divided into at least two compartments, e.g. for division of samples injection syringes having more than one chamber A61M5/19; syringes for injection of two or more media A61M5/2448, A61M5/284; sample preparation for further analysis A61B5/150755
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• CPC Class Codes: A61B 5/150274 Manufacture or production processes or steps for blood sampling devices
• CPC Class Codes: A61B 5/150343 Collection vessels for collecting blood samples from the skin surface, e.g. test tubes, cuvettes sampling from within body cavities A61B5/150015, A61B5/150045
• CPC Class Codes: A61B 5/150755 Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
• CPC Class Codes: A61B 5/150786 Optical identification systems, e.g. bar codes, colour codes
• CPC Class Codes: A61B 5/150946 Means for varying, regulating, indicating or limiting the speed or time of blood collection
• CPC Class Codes: A61B 5/154 Devices using pre-evacuated means
• CPC Class Codes: A61J 1/05 for collecting, storing or administering blood, plasma or medical fluids multiple bags systems for separating or storing blood components A61M1/0209; Infusion or perfusion containers
• CPC Class Codes: A61J 1/12 with means for holding samples of contents
• CPC Class Codes: B01D 61/28 Apparatus therefor

Abstract

A liquid container, pumpable to aspirate liquid into it via an inlet passage, has a dialyzing membrane forming first and second compartments within the container on either side of the membrane. The inlet passage feeds into only one of the two compartments and that one compartment, at least, includes pumpable walls of the container.

Claims

1. Liquid container apparatus comprising A. liquid-impervious wall means forming a chamber with at least a collapsible and resiliently restoring externally accessible wall portion, B. a dialyzing membrane within said chamber dividing the chamber interior into at least first and second compartments arranged with said collapsible wall portion forming at least part of the wall of said first chamber, and C. inlet tubing means feeding into only said first of said first and second compartments, and said first compartment being closed except for said inlet tubing means and the porosity of said membrane.

2. Container apparatus as defined in claim 1 in which A. said wall means forms said chamber with at least two opposed collapsible and resiliently restoring externally accessible wall portions, and B. said dialyzing membrane is disposed in said chamber between said two opposed wall portions such that each wall portion forms a portion of a different one of said first and second compartments.

3. Container apparatus as defined in claim 1 in which said chamber extends along a first axis and said inlet tubing means feeds into said first compartment adjacent an extreme end thereof along said first axis.

4. A container for the collection, storage and dialysis of a liquid, said container comprising A. a tubelike collection passage having first and second ends and a first storage volume therein between said ends, B. a first chamber compartment connected with said first end of said passage to receive liquid therefrom, said first compartment resiliently maintaining a normal uncollapsed shape and being resiliently collapsiBle to expel fluid therefrom by way of said passage and resiliently recovering said normal uncollapsed shape when said second end of said passage is open to aspirate fluid thereinto, C. a semipermeable dialysis membrane forming part of the wall of said first chamber compartment, and D. a second chamber compartment contiguous with said first compartment and having said semipermeable dialysis membrane forming also a portion thereof for the passage of dialyzate between said first and second compartments through said membrane, and forming with said first compartment an enclosure normally fluidtight except for the entry of said passage into said first compartment.

5. A container as defined in claim 4 in which said first chamber compartment is sufficiently large and sufficiently resiliently collapsible to diminish the storage volume thereof by at least twice said first storage volume.

6. A container as defined in claim 5 further comprising a volume-indicating scale arranged along said passage for indicating the volume of liquid in said passage measuring from said second end thereof.

7. A container for the collection, storage and dialysis of liquid, said container comprising A. a manually holdable body casing sufficiently rigid to be self-supporting, B. means forming a tubular passage on said casing with an openly accessible inlet end, an outlet end, and a storage length therebetween, C. means forming on said casing a pouchlike chamber (1) having at least first and second compartments therein separated by a semipermeable dialysis membrane having a peripheral portion sealed to the walls of said chamber, and with said first compartment connected with said outlet end of said passage to provide fluid communication from the interior of said first compartment through said passage to the said inlet end thereof, and (2) having a resilient wall forming at least part of said first compartment and collapsible to diminish the volume of said first compartment and resiliently resuming a normal uncollapsed position.

8. A container as defined in claim 7 further comprising means forming a record panel on said casing for bearing readable indicia.

9. A container as defined in claim 7 further comprising a reagent liquid disposed in said chamber compartments.