Switch bag type blood gathering set

Claim 1

A blood-gathering set of a switch-bag type for performing blood transfusion of blood gathered from a blood donor and stored beforehand to the same blood donor, and storing blood afresh by performing blood gathering afresh from the blood donor, said blood-gathering set comprising: liquid transfer means including a liquid introducing needle connectable to a container in which a medicament solution such as physiological salt solution or the like is stored, a first connecting tube connected to the liquid introducing needle, and a drip cylinder connected to the first connecting tube at a midpoint of the first connecting tube; blood-transfusing means including N individual (N≧2) blood-introducing needles connectable to blood bag means in which blood from the blood donor is stored to introduce blood contained in the blood bag means to the donor during subsequent transfusion, drip cylinder means connected with the blood introducing needles and provided with filter means inside thereof, and a second connecting tube connected with the drip cylinder means; blood-transfusing and blood-gathering means including a gathering needle for performing one of blood transfusion of blood introduced by said blood transfusion means to the blood donor and blood-gathering from the same blood donor, a third connecting tube connected to the gathering needle for guiding blood, and a medicament solution introducing portion connected to the third connecting tube at a midportion of the third connecting tube; washing solution storing means including a waste liquor bag for recovering waste liquor after priming of the blood-gathering set, a fourth connecting tube for guiding waste liquor to an inside of the waste liquor bag, and a valve arranged in the inside of the waste liquor bag for preventing countercurrent; n individual blood-storing members (n≧2 and n≧N) each including a blood-gathering bag for storing blood, a fifth connecting tube for communicating said blood-transfusing means and blood-transfusing and blood-gathering means with the blood-gathering bag, the fifth connecting tube having a connecting piece with flow channel which is open when the set is in use, and a second bag connected with the blood-gathering bag; and a plurality of joining members associated with the liquid transfer means, blood-transfusing means, and blood-transfusing and blood-transfering means for preventing invasion of outside air therein.