Safety vacuum syringe for blood sampling

Details Safety vacuum syringe for blood sampling Safety vacuum syringe for blood sampling

1996-03-11

1998-07-07

Lewis, Aaron J.

Surgery

Diagnostic testing

Liquid collection

604110, 604164, A61M 500

Patent

active

057760764

ABSTRACT:
A safety vacuum syringe for blood sampling, which includes a barrel, a cylindrical vacuum container mounted inside the barrel, a reduced tubular lining cap mounted in the barrel at the front end, a hollow cylindrical connecting member fixedly secured to the front end of the cylindrical vacuum container, a needle holder having an outer needle cannula and an inner needle cannula at two opposite ends, an outer needle cap covered on the outer needle cannula, and an outer bottom cap fastened to the barrel to hold the vacuum container on the inside, wherein when the vacuum container is pulled out and detached from the barrel, the connecting member and the needle holder are pulled to the inside of the barrel, the outer needle cap and the outer bottom cap are respectively and invertedly inserted into the two opposite ends of the barrel to deform the needle cannulas in the barrel.

REFERENCES:
patent: 3886930 (1975-06-01), Ryan
patent: 4758231 (1988-07-01), Haber et al.
patent: 4838863 (1989-06-01), Allard et al.
patent: 4950241 (1990-08-01), Ranford
patent: 4976925 (1990-12-01), Porcher et al.
patent: 5069225 (1991-12-01), Okamura
patent: 5423758 (1995-06-01), Shaw

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