Patent · US Expired

Method for dialysis

US4601830A · kind A · utility

16Cited by

1References

6Claims

0Family size

Assignee

The United States of America as represented by the Administrator of Veteran Affairs · US

Inventor

Wei Chen · Nanhu, CN

Key dates

Filing date	Oct 28, 1981
Grant date	Jul 22, 1986
Priority date	—
Expiry date	Oct 28, 2001

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M1/1656
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A method and apparatus for the hemodialysis of the blood of kidney failure patients. The concentration of the dialysis solution is initially selected so that the solution osmolality approximates the osmolality of the patient's blood. The dialysis solution concentration is then reduced linearly as a function of time as the dialysis is carried out. The conductivity of the dialysis solution is measured and compared with high and low limit references. If the conductivity is outside the limits, an alarm is given and the concentration of the dialysis solution is held constant. A timer controls a proportional pumping means to reduce the concentration of the dialysis solution and concurrently reduces the conductivity reference limits for the alarm.

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