Hemofiltration systems, methods and devices used to treat inflammatory mediator related disease

• US 20040199099A1
• Filed: 04/16/2004
• Published: 10/07/2004
• Est. Priority Date: 07/10/1998
• Status: Abandoned Application

• Current Assignee: Immunocept LLC
• Original Assignee: Immunocept LLC
• Inventors: Matson, James R., Lee, Patrice A.
• Application Number:
  US10/826,736
• Publication Number:
  US 20040199099A1
• Time in Patent Office: Days
• US Class Current: 604/6.09
• CPC Class Codes: A61M 1/3437 downstream of the filter, e.g. post-dilution with filtrate
• CPC Class Codes: A61M 1/3472 with treatment of the filtrate
• CPC Class Codes: A61M 1/3475 with filtrate treatment agent in the same enclosure as the membrane
• CPC Class Codes: A61M 1/3486 Biological, chemical treatment, e.g. chemical precipitation; treatment by absorbents

Abstract

A hemofiltration system for a mammal is provided with a hemofilter and an adsorbent device. The hemofilter removes ultrafiltrate from a blood stream extracted from the mammal to create a filtered blood stream and an ultrafiltrate stream. The adsorbent device has one or more adsorbent materials and is used to adsorb inflammatory mediators from the ultrafiltrate stream received from the hemofilter removing inflammatory mediators that cause inflammatory mediator related disease, sepsis, and SIRS/MODS/MOSF to create a post adsorption ultrafiltrate stream. The post adsorption ultrafiltrate stream is selectively combined with the filtered blood stream and together with the filtered blood stream is returned to the mammal.

Claims

1. A hemofiltration system to treat an inflammatory mediator related disease in a mammal, comprising:

a hemofilter operable to remove ultrafiltrate from a blood stream extracted from the mammal and to create a filtered blood stream and an ultrafiltrate stream;

an adsorptive device containing at least one adsorbent material operable to receive the ultrafiltrate stream from the hemofilter and to remove a wide range of inflammatory mediators therefrom to create a post adsorption ultrafiltrate stream;

the adsorbent material selected from a group consisting of coated materials, uncoated materials, a matrix of rods, a matrix configured for convenient presentation of ultrafiltrate to adsorbent material, beads, and particulates and any combination thereof; and

tubing for use in combining the post adsorption ultrafiltrate stream with the filtered blood stream and returning the combined stream to the mammal.

2. The hemofiltration system of claim 1, wherein the adsorbent material is comprised of adsorbent resins selected from a group consisting of immobilized polymyxin B, polystyrene-derivative fibers, cation exchange resins, neutral exchange resins, anion exchange resins, cellulose materials, polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, cellulose derivatives, specific antibody coated materials, specific antagonist coated materials, and any combination thereof.

3. The hemofiltration system of claim 1, wherein the ultrafiltrate stream comprises plasma water, electrolytes, blood peptides and proteins.

4. The hemofiltration system of claim 1, wherein the hemofilter comprises a material selected from the group of polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, and cellulose derivatives, and the jacket comprises polycarbonate.

5. The hemofiltration system of claim 1, wherein the adsorbent material is selected from a group consisting of activated charcoal, uncharged resins, charged resins, silica, immobilized polymyxin B, anion exchange resin, cation exchange resin, neutral exchange resin, polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, cellulose derivatives, immobilized monoclonal antibodies, immobilized IM receptors, immobilized specific antagonists, and any combination thereof.

6. A hemofiltration system to treat an inflammatory mediator related disease including sepsis and septic shock in a mammal, comprising:

a hemofilter operable to remove ultrafiltrate from a blood stream extracted from the mammal and to create a filtered blood stream and an ultrafiltrate stream;

an adsorptive device containing at least one adsorbent material operable to receive the ultrafiltrate stream from the hemofilter and to remove at least one inflammatory mediator therefrom to create a post adsorption ultrafiltrate stream;

the adsorbent material selected from a group consisting of coated materials, uncoated materials, a matrix of rods, a matrix configured for convenient presentation of ultrafiltrate to adsorbent material, beads, and particulates and any combination thereof; and

means for selectively combining the post adsorption ultrafiltrate stream with the filtered blood stream and returning the combined stream to the mammal.

7. The hemofiltration system of claim 6, wherein the adsorbent material is comprised of adsorbent resins selected from a group consisting of immobilized polymyxin B, polystyrene-derivative fibers, cation exchange resins, neutral exchange resins, anion exchange resins, cellulose materials, polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, cellulose derivatives, specific antibody coated materials, specific antagonist coated materials, and any combination thereof.

8. The hemofiltration system of claim 6, wherein the ultrafiltrate stream comprises plasma water, electrolytes, blood peptides and proteins.

9. The hemofiltration system of claim 6, wherein the hemofilter comprises a material selected from the group of polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, and cellulose derivatives, and the jacket comprises polycarbonate.

10. The hemofiltration system of claim 6, wherein the adsorbent material is selected from a group consisting of activated charcoal, uncharged resins, charged resins, silica, immobilized polymyxin B, anion exchange resin, cation exchange resin, neutral exchange resin, polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, cellulose derivatives, immobilized monoclonal antibodies, immobilized IM receptors, immobilized specific antagonists, and any combination thereof.

11. A hemofiltration system to treat an inflammatory mediator related disease in a mammal, comprising:

a hemofilter operable to remove ultrafiltrate from a blood stream extracted from the mammal and to create a filtered blood stream and an ultrafiltrate stream;

an adsorptive device containing at least one adsorbent material operable to receive the ultrafiltrate stream from the hemofilter and to remove a wide range of inflammatory mediators therefrom to create a post adsorption ultrafiltrate stream;

the adsorbent material selected from a group consisting of coated materials, uncoated materials, a matrix of rods, a matrix configured for convenient presentation of ultrafiltrate to adsorbent material, beads, and particulates and any combination thereof;

tubing operable to combine the post adsorption ultrafiltrate stream with the filtered blood stream and return the combined stream to the mammal;

a first pump to transfer the post adsorption ultrafiltrate stream from the adsorptive device; and

a second pump to transfer a portion of the post adsorption ultrafiltrate stream which is not returned to the mammal to the waste reservoir using a second ultrafiltrate pump.

12. The hemofiltration system of claim 11 wherein the adsorbent material is comprised of adsorbent resins selected from a group consisting of immobilized polymyxin B, polystyrene-derivative fibers, cation exchange resins, neutral exchange resins, anion exchange resins, cellulose materials, polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, cellulose derivatives, specific antibody coated materials, specific antagonist coated materials, and any combination thereof.

13. The hemofiltration system of claim 11, wherein the ultrafiltrate stream comprises plasma water, electrolytes, blood peptides and proteins.

14. The hemofiltration system of claim 11, wherein the hemofilter comprises a material selected from the group of polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, and cellulose derivatives, and the jacket comprises polycarbonate.

15. The hemofiltration system of claim 11, wherein the adsorbent material is selected from a group consisting of activated charcoal, uncharged resins, charged resins, silica, immobilized polymyxin B, anion exchange resin, cation exchange resin, neutral exchange resin, polysulfone, polyacrylonitrile, polymethylmethacrylate, polyvinyl-alcohol, polyamide, polycarbonate, cellulose derivatives, immobilized monoclonal antibodies, immobilized IM receptors, immobilized specific antagonists, and any combination thereof.