U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Automated cleaning method for dialyzers

Patent 4444596 Issued on April 24, 1984. Estimated Expiration Date: Icon_subject May 3, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2827724

2878969

3352779

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3462361

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Inventors

Application

No. 06/373873 filed on 05/03/1982

US Classes:

134/18, Combined (e.g., automatic control)134/22.12, With pressurized fluid or fluid manipulation134/26, Using sequentially applied treating agents134/56R, Automatic controls134/57R, With electric control210/140, Preparation for treating operation210/321.69, With membrane cleaning or sterlizing means (other than by filter movement or rotating agitator)210/646, Hemodialysis210/90, Fluid pressure responsive210/96.2With membrane

Examiners

Primary: Lindsay, Robert L.

Attorney, Agent or Firm

International Classes

A61M 1/36 (20060101)
A61M 1/16 (20060101)
B01D 65/00 (20060101)
B01D 65/02 (20060101)

Abstract

A fully automated method and apparatus for cleaning and disinfecting blood dialyzers for reuse having multiple stations simultaneously capable of cleaning a plurality of dialyzers. The dialyzer, the station cleaning the dialyzer, and the patient are identified and the identifications are stored in memory. A predetermined sequence of cleaning procedures tailored to the type of dialyzer to be cleaned are provided. The cleaning procedures are automatically machined sequenced, and the sequence is selectively controlled in response to automatic test procedures measuring indicia of dialyzer reusability. The tests performed on the dialyzer include a blood presence test, a pressure leakage test, and an ultrafiltration rate test. If it is determined that the dialyzer is not reusable, it is either cleaned further to make it reusable or machine sequencing of subsequent cleaning procedures is inhibited.

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