Patent · US Expired

Method for the indirect oxidation of urea

US4388163A · kind A · utility

20Cited by

6References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Gerhard Richter · Kreuztal, DE
Erhard Weidlich · Spardorf, DE
Konrad Mund

Key dates

Filing date	Oct 13, 1981
Grant date	Jun 14, 1983
Priority date	—
Expiry date	Oct 13, 2001

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M1/3486
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a method and apparatus for the indirect oxidation of urea by means of an electrochemical cell having two electrodes, to which an aqueous chloride-containing urea solution is supplied, and has as its object the provision of a method such that the urea is removed from the solution as completely as possible, without further changes occurring in the solution. According to the invention, the cell is divided for that purpose by an ion-conducting membrane into two spaces, one of which contains the anode and the other the cathode, and the solution is supplied first to the anode space and then to the cathode space. The method according to the invention serves in particular for extra-corporal blood purification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.