Syringe device with means for selectively isolating a blood samp

Details Syringe device with means for selectively isolating a blood samp Syringe device with means for selectively isolating a blood samp

1978-10-20

1980-06-10

Howell, Kyle L.

Surgery

Truss

Pad

128218PA, A61B 514

Patent

active

042067685

ABSTRACT:
A syringe is disclosed for taking blood samples which includes a tubular body, a plunger, a sealing member and a needle. The plunger and sealing member in combination are slideably received in the tubular body with the plunger receiving the sealing member for rotational movement about its longitudinal axis. The sealing member has two longitudinally spaced circumferential sealing locations with a cylindrical space between the sealing locations. Two closeable openings through each seal location are established in the sealing member at 180.degree. opposition to each other by a thread extending across each seal. The thread is attached to the plunger so that after blood passes through the seal nearest the needle end of the syringe, the plunger can be rotated to remove the thread from both seal locations thereby sealing the blood sample in the tubular body after all gases have been purged from the tubular body.

REFERENCES:
patent: 3943917 (1976-03-01), Johansen
patent: 3985122 (1976-10-01), Topham
patent: 4020831 (1977-05-01), Adler

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