Hemodialysis device

Patent 4683053 Issued on July 28, 1987. Estimated Expiration Date:

May 7, 2005. 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.

Abstract Claims Description Full Text

Patent References

3441136

Artificial haemodialysis kidneys
Patent #: 3979284
Issued on: 09/07/1976
Inventor: Granger , et al.

Apparatus for measuring ultrafiltration during dialysis
Patent #: 4141834
Issued on: 02/27/1979
Inventor: Bellotti , et al.

Computer-control medical care system Patent #: 4370983
Issued on: 02/01/1983
Inventor: Lichtenstein

Inventor

Polaschegg, Hans-Dietrich

Application

No. 06/731808 filed on 05/07/1985

US Classes:

210/86, Material level or thickness responsive210/321.6, CASING DIVIDED BY MEMBRANE INTO SECTIONS HAVING INLET(S) AND/OR OUTLET(S)210/929HEMOULTRAFILTRATE VOLUME MEASUREMENT OR CONTROL PROCESSES

Examiners

Primary: Spear, Frank

Attorney, Agent or Firm

Townsend and Townsend

International Classes

A61M 1/16 (20060101)
B01D 61/22 (20060101)
A61M 1/34 (20060101)

Foreign Application Priority Data

1984-05-08 DE

Abstract

Hemodialysis device (10) with a control apparatus (74) and a line (52) which is connected to a valve arrangement (50) downstream of the suction pump (20) and to a dialyzing liquid source (16). The dialyzing liquid source (16) has a volume measuring apparatus (54, 58) with which the ultrafiltrate generated by the suction pump (20) can be determined in the recirculation circuit. The ultrafiltration rate thereby established serves to control the suction pump (20) with the aid of the control apparatus (74), in some cases the transmembrane pressure being determined with the aid of the pressure gauges (62, 66) and from which the current ultrafiltration coefficient can be measured. Furthermore, the hemodialysis device (10) has a safe possibility of feeding disinfectant concentrate into the recirculation circuit downstream of the dialyzer (12).