Patent ID: 8597417

Claim:
A blood reservoir that stores one or both of venous blood and cardiotomy blood, the blood reservoir comprising a housing and a filter means, the filter means including a venous blood filter means and a cardiotomy blood filter means, the venous blood filter means disposed in the housing and including a venous blood filter member for removing bubbles from the venous blood, and the cardiotomy blood filter means including a first cardiotomy blood filter member that is disposed in the housing and that removes foreign matter and bubbles from cardiotomy blood, and a second cardiotomy blood filter member that is disposed outside the first cardiotomy blood filter member and that removes foreign matter and bubbles from cardiotomy blood that has passed through the first cardiotomy blood filter member, the second filter member including a first filter portion that forms a wall portion and a second filter portion that forms a bottom portion, and the first filter portion and the second filter portion are formed with different specifications, wherein the first filter portion is formed by a non-woven fabric, and the second filter portion is formed by a single-layer mesh fabric.