Personal hemodialysis system
US8114276B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 23, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87893
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dialysis machine includes a dialysis instrument having a pump actuator and first and second valve actuators, and a disposable cassette operable with the dialysis instrument, the disposable cassette including a pump portion operable with the pump actuator, first and second valve chambers operable with the first and second valve actuators, the first and second valve chambers communicating fluidly with each other, at least the first valve chamber communicating fluidly with a compliance chamber, the compliance chamber negating a first backpressure due to a pneumatic closing pressure used to close the first valve chamber to help to ensure the pneumatic pressure applied to the first valve chamber will close the first valve chamber against a second backpressure from an existing closure of the second valve chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.