Method of determining system volume of a dialysis machine
US6280634A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Jun 9, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of calibrating a dialysis machine to determine the volume of a dialysate flow path of the machine including a dialysate preparation tank includes the steps of introducing a known quantity of electrically conductive chemicals into the dialysate preparation tank, filling the dialysate solution flow path with water, mixing the chemicals with water to form a solution, measuring the conductivity of the solution, calculating the system volume (V.sub.sys) according to the relation: V.sub.sys =M/(a.sub.1 r+b.sub.1) where M is the mass in grams of the chemicals, a.sub.1 and b.sub.1 are a coefficient of linearity and a constant of linearity, respectively, for the chemicals and r is the measured conductivity of the solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.