Blood flow direction changeover device and method for hemodialyzer
US5605630A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 1994 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Feb 25, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/7563
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Blood guided out of the artery of a patient by a blood pump is introduced into an arterial inlet of a blood flow direction changeover device, and it is then guided from the outlet of the changeover device to a dialzyer through an inlet thereof. The blood then leaves an outlet of the dialyzer, enters the blood flow path changeover device, leaves a venous outlet of the changeover device and returns into the vein of the patient. The dialytic liquid, on the other hand, leaves a dialytic liquid outlet, passes through a dialytic liquid flow direction changeover device and is finally discharged through a dialytic liquid outlet. Then, the respective changeover devices are changed over to reverse the respective flows. This is intermittently repeated. Thus, blood coagulation can be inhibited or prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.