Methods and apparatus for autotransfusion of blood
US4772256A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1986 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Nov 7, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/604
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is directed to improved methods and apparatus for the collection of blood, which are particularly useful for autotransfusion purposes. The apparatus includes an upper reservoir wherein the collected blood enters the device. A lower container is placed in fluid communication with the upper reservoir. Disposed within the interior of the container is a conventional blood bag which is in turn placed in fluid communication with the upper reservoir. The upper reservoir has two external connections. The first connection is for receiving blood from the patient. The second external connection places the upper reservoir in communication with a source of vacuum. In one embodiment of the present invention a filtering structure is disposed within the upper reservoir and is connected directly to the inlet connection from the patient. The filtering mechanism provides for early debubbling of the blood flowing into the device and also filters out any emboli or cell masses which may have developed in the collection process. In one embodiment of the invention, the apparatus described above is combined with an air-blood separator to form a collection system. This system is partic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.