Dialysis valve and method
US7540859B2 · kind B2 · utility
78Cited by
15References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2004 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jul 5, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/0266
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dialysis valve includes a tube attached between an artery and a vein which, when elongated, simultaneously narrows in diameter at at least one location. The narrowed portion of the tube decreases the volume and velocity between the arterial and venous side of the patient to prevent damage or intimal hyperplasia on the venous side between dialysis treatments. When the valve is opened for dialysis, an unrestricted blood flow exists between the arterial and venous side, permitting a controlled, open blood flow during dialysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.