Single-needle type plasma separation apparatus and plasma collec

Details Single-needle type plasma separation apparatus and plasma collec Single-needle type plasma separation apparatus and plasma collec

1990-04-26

1992-08-25

Yu, Mickey

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

2101952, 2102572, 210651, 604 4, A61M 3700

Patent

active

051414902

ABSTRACT:
The single-needle type plasma separation apparatus of the present invention comprises a blood collection needle; a blood collection container; a first blood transportation tube connecting the blood collection needle to the blood collection container; a blood separator; a second blood transportation tube connecting the blood collection container to a blood inlet of the blood separator; a third blood transportation tube connecting a blood outlet of the blood separator to the first blood transportation tube; a plasma collection container; a plasma transportation tube connecting a plasma outlet of the plasma separator to the plasma collection container; and a blood collection container receptacle including a receiving portion for the blood collection container and capable of pressurizing and depressurizing the interior of the receiving portion. Because the single-needle type plasma separation apparatus of the present invention is provided with the blood collection container receptacle including the receiving portion for the blood collection container and capable of pressurizing and depressurizing the interior of the receiving portion, it is possible to carry out the collection of blood into the blood collection container, the transportation of the collected blood to the plasma separator, and the return of the concentrated red blood cells from the plasma separator. Therefore, the present invention affords the advantages that the circuit construction is simple, the whole size of the apparatus is small, the apparatus can be used even in a narrow car for blood donation because there is no necessity for ensuring a head for circulating blood through a plasma separator, parts to be handled can be gathered, improving the operability, and plasma can easily be collected. Furthermore, the blood transportation tubes connecting the components to one another can be shortened, the volume for priming of the plasma separation apparatus can be made small, and an automation of the operation becomes possible.

REFERENCES:
patent: 4322298 (1982-03-01), Persidsky
patent: 4639243 (1987-01-01), Schmidt et al.
patent: 4655742 (1987-04-01), Vantard
patent: 4886487 (1989-12-01), Solem et al.
patent: 4894164 (1990-01-01), Polaschegg
patent: 4904234 (1990-02-01), Shimomura et al.
patent: 4923449 (1990-05-01), Toya et al.
patent: 4966709 (1990-10-01), Nose et al.

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