Medical drug formulation and delivery system and reverse osmosis purification device

• US 5,352,364 A
• Filed: 12/15/1992
• Issued: 10/04/1994
• Est. Priority Date: 08/20/1990
• Status: Expired due to Fees

• Current Assignee: Hospira Incorporated (Pfizer Inc.)
• Original Assignee: Abbott Laboratories Incorporated
• Inventors: Wecker, Sheldon M., Kruger, Robert J., Larkin, Mark E., Mayoral, Joaquin, Frederick, Warren P.
• Primary Examiner(s): SPEAR JR, FRANK
• Application Number:
  US07/990,580
• Time in Patent Office: 658 Days
• Field of Search: 210/641, 210/652, 210/321.75, 210/259, 210/317, 210/257.2, 210/651, 604/4, 604/5, 604/6
• US Class Current: 210/652
• CPC Class Codes: A61M 1/1643 with weighing of fresh and used dialysis fluid
• CPC Class Codes: A61M 1/1662 with heat exchange between fresh and used dialysate
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/281 Instillation other than by gravity
• CPC Class Codes: A61M 1/284 Continuous flow peritoneal dialysis [CFPD]
• CPC Class Codes: A61M 1/288 Priming priming in extracorporeal blood circuits A61M1/3643
• CPC Class Codes: A61M 2205/3613 by body heat
• CPC Class Codes: B01D 2311/08 Specific process operations in the concentrate stream
• CPC Class Codes: B01D 2311/14 Pressure control
• CPC Class Codes: B01D 2311/165 Cross-flow velocity control
• CPC Class Codes: B01D 2313/086 Meandering flow path over the membrane
• CPC Class Codes: B01D 2313/143 on the feed side
• CPC Class Codes: B01D 2313/24 Specific pressurizing or depressurizing means
• CPC Class Codes: B01D 61/026 comprising multiple reverse osmosis steps
• CPC Class Codes: B01D 63/103 Details relating to membrane envelopes
• CPC Class Codes: B01D 63/1031 Glue line or sealing patterns
• CPC Class Codes: B01D 63/106 Anti-Telescopic-Devices [ATD]
• CPC Class Codes: B01D 63/12 comprising multiple spiral-wound assemblies
• CPC Class Codes: C02F 1/441 by reverse osmosis

Abstract

A reverse osmosis device for purifying water from a source comprising a housing having an inlet for passage of water from the source, a first outlet for passage of purified water from the housing and a second outlet for passage of waste water remaining after purification. A first reverse osmosis multilayer assembly is disposed within the housing in fluid communication with the inlet for purification of at least a first portion of the water from the source. Water treatment chemicals can be positioned in a core about which the first reserve osmosis multilayer assembly is wound. The treatment chemicals are in fluid communication with the first reverse osmosis multilayer assembly to receive the first purified portion of water and for removal of at least chemical contaminants therefrom. A second reverse osmosis multilayer assembly is also wound on the core and is in fluid communication with the water treatment chemicals to receive the chemically purified water for purification of at least a second portion thereof. The second reserve osmosis multilayer assembly is in fluid communication with the first outlet so as to permit passage of the second portion of purified water therethrough.

Claims

1. Method for purifying fluid from a source comprising:

a. passing fluid in a spiral fluid manner from the source through a first spiral wound reverse osmosis means being in fluid communication with the source so as to purify at least a portion of the fluid from the source; and

b. passing the purified first portion of fluid in a spiral flow manner through a second spiral wound osmosis means being in fluid communication with said first reverse osmosis means to receive at least some of the purified portion of fluid for further purification of at least a further portion of the fluid.

2. Method for purifying water from a source comprising:

a. passing water in a spiral fluid flow manner from the source through a first spiral wound reverse osmosis means being in fluid communication with the source so as to purify at least a first portion of the water from the source; and

b. passing the purified first portion of water in a spiral fluid flow manner through a second spiral wound reverse osmosis means being in fluid communication with said first reverse osmosis means to receive the purified first portion of fluid for further purification of at least a second portion of the water.

3. Method for purifying water from a source comprising:

a. passing water in a spiral fluid flow manner from the source through a first spiral wound reverse osmosis means being in fluid communication with the source so as to purify at least a first portion of the water from the source;

b. passing the purified first portion of water through chemical means being in fluid communication with said first reverse osmosis means to receive said first purified portion of water and for removal of at least chemical contaminants from said first purified portions of water; and

c. passing the chemically purified water in a spiral fluid flow manner through a second spiral wound reverse osmosis means being in fluid communication with said chemical means to receive the chemically purified water for purification of at least a second portion of the chemically purified water, said second reverse osmosis means also being in fluid communication with a first outlet and a second outlet so as to permit passage of said second portion of purified water through said first outlet and for passage of wastewater through said second outlet.

4. Method for purifying water from a source comprising:

a. passing water in a spiral fluid flow manner from the source through a first spiral wound reverse osmosis means being in fluid communication with the source so as to purify at least a first portion of the water from the source;

b. passing the purified first portion of water in a spiral fluid flow manner through a second spiral wound reverse osmosis means being in fluid communication with said first osmosis means to receive the purified first portion of water for further purification of at least a second portion of the water; and

c. passing the purified second portion of water through chemical means being in fluid communication with said second reverse osmosis means to receive said second purified portion of water and for removal of at least chemical contaminants from said purified second portion of water, said chemical means also being in fluid communication with an outlet so as to permit passage of said chemically purified water through said outlet.

5. The method according to claim 4 further comprising passing the chemically purified water through a filtration means for further purification.