Method of manufacturing a blood bag for use in a test for neutro

Details Method of manufacturing a blood bag for use in a test for neutro Method of manufacturing a blood bag for use in a test for neutro

1977-02-18

1979-05-01

Michell, Robert W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29157R, 29428, 128214D, 128272, 156 70, 156183, 156205, 1563031, 264230, 264248, 264295, 264342R, B29C 2700

Patent

active

041521846

ABSTRACT:
A flexible, collapsible blood bag which defines an access port at one end thereof. The blood bag contains cellophane film of sufficient area to process blood or plasma placed in the bag, so that reinfusion of the blood to a normal donor, after an appropriate residence time in the bag, causes a transient increase in the neutrophil count of the donor's blood. The cellophane film in the bag is folded in an ordered manner, to define generally parallel flow channels having ends positioned adjacent the access port. A screen member may be positioned between the cellophane film and the access port to prevent blocking thereof by the cellophane film. Also, the cellophane film may define a large plurality of raised surface portions, relative to the normal plane of the film, to facilitate the spacing of adjacent, folded layers of the film from each other. This facilitates the definition of the flow channels for blood distribution throughout the cellophane film.

REFERENCES:
patent: 3370710 (1968-02-01), Bluemle
patent: 3411698 (1968-11-01), Reynolds
patent: 3550839 (1970-12-01), Clayton
patent: 3712033 (1973-01-01), Gronholz
patent: 3827562 (1974-08-01), Esmond
patent: 3849314 (1974-11-01), Niccum et al.
patent: 3948777 (1976-04-01), Murata et al.
Clinical Research, Abstract by Woodward et al., vol. 21, p. 56 (1973).
Journal of Laboratory and Clinical Medicine, vol. 87, No. 6, pp. 1075-1086 (Jun. 9, 1976).

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