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

1979-11-06

1982-04-27

Howell, Kyle L.

Surgery

Truss

Pad

128218PA, A61B 514

Patent

active

043265405

ABSTRACT:
A syringe device has a hollow tubular body that receives a plunger, having in combination a handle portion rotatable within a sealing member portion, for obtaining gas-free blood samples. After an interior chamber of the syringe body is filled with blood under the influences of an individual's blood pressure, a seal is selectively established to isolate the sample. The syringe body is open at one end to receive the plunger and frictionally receives a hypodermic needle through a cylindrical end element disposed at the other end. A pair of linearatly extending seal interrupters, sliced from the handle portion of the plunger, extend from a position fixed on the handle portion across the sealing member to establish breach points, which in turn allow air communication between the interior chamber and the atmosphere. A pair of grooves disposed longitudinally near the open end of the syringe body retain the seal interrupters and prevent permanent indentations from forming in the sealing member while in storage.

REFERENCES:
patent: 3354882 (1967-11-01), Coanda
patent: 3943917 (1976-03-01), Johansen
patent: 3985122 (1976-10-01), Topham
patent: 4020831 (1977-05-01), Adler
patent: 4133304 (1979-01-01), Bailey
patent: 4206768 (1980-06-01), Bailey
patent: 4212309 (1980-07-01), Moorehead

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