Filtration System Preparation of Fluids for Medical Applications

a technology of filtration system and fluid, applied in the direction of separation process, membrane, treatment water, etc., can solve the problems of high fluid supply rate, complicated devices, and high cost of filters

Inactive Publication Date: 2008-09-04
NXSTAGE MEDICAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such devices are necessarily complicated and require separate pumping systems for the purification process.
In addition, the rate of supply of fluid for such systems is very high, requir

Method used

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  • Filtration System Preparation of Fluids for Medical Applications
  • Filtration System Preparation of Fluids for Medical Applications
  • Filtration System Preparation of Fluids for Medical Applications

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Embodiment Construction

[0028]The present disclosure relates to apparatus, methods, devices, articles of manufacture, etc. for producing pure water and, in some embodiments, pure solutions. These may be used for the preparation of solutions for medical applications such as tissue irrigation, preparation of pharmaceutical, blood treatments such as hemofiltration, hemodialysis, hemodiafiltration and ultrafiltration, and other treatments.

[0029]As described in FIG. 1A, to supply suitable water that is substantially free of unwanted dissolved and undissolved materials, a combination of permanent and replaceable components may be provided at the treatment site. FIG. 1A is an overview of a framework that provides benefits, particularly in certain environments. One such environment is renal replacement therapy. Patients must be treated at least twice a week and often daily. On the other hand, excellent sterility design urges the use of pre-sterilized throw-away components to ensure against various modes of contami...

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Abstract

Systems, methods, and devices for preparation of water for various uses including blood treatment are described. In embodiments, fluid is passed either by pump or passively by gravity feed, through various filtration elements from a fluid source to a treatment fluid container. The latter forms a batch that may be used during treatment. The advantage of forming the batch before treatment is that the rate of filtering needn't match the rate of consumption during treatment which provides multiple benefits and liabilities to overcome, as discussed herein. Mechanisms for preparing pure water for infusion or medicaments are described such as elimination of chlorine and colloidal aluminum. Also various control mechanisms to help avoid contamination are describe.

Description

BACKGROUND OF THE INVENTION[0001]Many medical applications require purified water and other fluids. for example, hemofiltration, tissue irrigation, and hemodiafiltration. Some prior art systems have focused on continuous purification processes that require a separate dfiltration / purification apparatus that must be periodically purged and verified to provide sufficient constant flow of sterile replacement fluid. (See Chavallet U.S. Pat. Nos. 6,039,877 and 5,702,597.) Such devices are necessarily complicated and require separate pumping systems for the purification process. In addition, the rate of supply of fluid for such systems is very high, requiring expensive filters to be used. The same high-rate problem exists for the generation of replacement fluid for hemofiltration, and therefore also requires expensive filtering apparatus.[0002]Large and small scale inline systems are known for preparation of infusible fluids and for preparation of dialysate. The following prior art referen...

Claims

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Application Information

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IPC IPC(8): B01D35/157B01D39/00B01D24/00B01D15/00B01D15/04B01J39/00
CPCB01D2319/02B01D2317/02C02F1/42C02F1/444C02F2001/422C02F2001/425C02F2103/026C02F2209/008C02F2209/05C02F1/32B01D2313/16B01D2313/14B01D2313/04B01D2311/243B01D2311/04B01D61/28B01D61/243B01D61/22A61M1/1656A61M3/00B01D61/06B01D61/142B01D61/145B01D2311/26B01D2311/2626B01D2311/2623B01D2311/2619A61M1/1672A61M1/1674B01D61/146B01D61/44A61M1/1668A61M2205/33A61M2205/75B01D61/32C02F1/283
Inventor BURBANK, JEFFREY
Owner NXSTAGE MEDICAL
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