DISPOSABLE DIALYSER PACK WITH ADSORBENT

• US 3,608,729 A
• Filed: 09/27/1968
• Issued: 09/28/1971
• Est. Priority Date: 09/27/1967
• Status: Expired due to Term

• Current Assignee: Geoffrey Gordon Haselden
• Original Assignee: Geoffrey Gordon Haselden
• Inventors: Haselden, Geoffrey Gordon
• Primary Examiner(s): DeCesare, J. L.
• Application Number:
  US04/763,269
• Time in Patent Office: 1,096 Days
• Field of Search: 210/22,23,321,266
• US Class Current: 210/321.65
• CPC Class Codes: A61M 1/3679 by absorption A61M1/3675 takes precedence
• CPC Class Codes: B01D 61/28 Apparatus therefor
• CPC Class Codes: B01D 63/082 comprising a stack of flat membranes
• CPC Class Codes: B01D 63/0821 Membrane plate arrangements for submerged operation
• CPC Class Codes: Y10S 210/929 Hemoultrafiltrate volume measurement or control processes

Abstract

A self-contained pack for hemodialysis comprising a stack of rigid plastic sheets each formed with ridges and valleys and arranged in oppositely facing pairs, with pairs of flexible dialysis membranes interposed between the pairs of rigid sheets in the stack. The spaces between the paired membranes serve as blood flow passages, while the ridges of the rigid sheets provide support for the membranes. The spaces in the valleys between the ridges are packed with adsorbent material, e.g. an ion-exchange resin, immersed in nonflowing dialysis fluid.

Claims

2. A pack according to claim 1, wherein the solid adsorbent material provides further support for said membrane on said one side thereof.

3. A pack according to claim 1, wherein the plate is formed of synthetic plastic material by vacuum-molding technique.

4. A pack according to claim 1, comprising a succession of said plates arranged in a stack in oppositely facing pairs, with pairs of said membranes inserted between consecutive pairs of said plates, the stack being sealed around the edges of the plates and membranes in such manner as to prevent escape of said dialysis fluid and to confine flow of blood to the passages between said pairs of membranes.

5. A pack according to claim 4, wherein each said pair of membranes is provided by opposite walls of a flattened tube of membrance material.

6. A pack according to claim 1, wherein the adsorbent comprises an ion-exchange resin.

7. A pack according to claim 1, wherein the adsorbent includes at least one enzyme.

8. A pack according to claim 1, wherein at least one variable volume bag is connected to the chamber containing the adsorbent and dialysis fluid.

9. A pack according to claim 1, wherein a variable volume container filled with saline solution is in valved communication with said blood inlet connection.

10. A pack according to claim 1, including an air bubble rejector in said blood outlet connection.

11. A disposable portable pack according to claim 1, presterilized and sealed in an outer wrapping.