Recirculation of blood in an extracorporeal blood treatment system
US7981280B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2006 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Feb 25, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An extracorporeal blood treatment apparatus includes a blood treatment unit, a treatment fluid circuit, and a blood circuit. The treatment fluid circuit has a treatment fluid pump for circulating treatment fluid around the treatment fluid circuit and through the blood treatment unit. The blood circuit has a dual chamber blood pump for circulating blood around the blood circuit and through the blood treatment unit. An arterial line withdraws blood from a patient and delivers the withdrawn blood to the blood treatment unit. A venous line returns the treated blood to the patient. The arterial and venous lines can be switched between a first condition in which they are connected to the patient and a second condition in which they are disconnected from the patient and connected to each other for recirculation of blood through the blood circuit. A controller operates the blood pump, and switches the blood pump between a condition in which the dual chambers operate in phase with each other and a condition in which the dual chambers operate out of phase with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.