Blood extracting and centrifuging device

Details Blood extracting and centrifuging device Blood extracting and centrifuging device

1981-11-16

1984-07-17

Apley, Richard J.

Surgery

Truss

Pad

128765, 604110, 604228, A61B 500

Patent

active

044599978

ABSTRACT:
A blood extracting and centrifuging device has a cylindrical body 1 with front and rear ends 2, 3. The front end is adapted to receive a removable cannula 4 and a piston 8 is sealingly movable within the cylindrical body 1. A piston rod 9 attached to the piston 8 extends through a bore 10 at the rear end of the cylindrical body and is used to retract the piston, from an advanced position adjacent the front end to a retracted position adjacent the rear end, whereby to generate a vacuum in the cylindrical body 1 for extracting blood via the cannula 4. Securing means in the form of an annular retaining projection 22 on one of the piston 8 and the piston rod and an annular lip 24 at the rear end of the cylindrical body 1 are provided to secure the piston to the cylindrical body in its retracted position. After a blood sample has been taken the piston rod 9 can be removed and the cylindrical body 1 inserted directly in a centrifuge without the need to transfer the blood to a centrifuging vessel.

REFERENCES:
patent: 3115135 (1963-12-01), Sarnoff
patent: 3262449 (1966-07-01), Pannier, Jr. et al.
patent: 3438373 (1969-04-01), Pannier, Jr.
patent: 3577980 (1971-05-01), Cohen
patent: 3828778 (1974-08-01), Weinhart
patent: 3937211 (1976-02-01), Merten
patent: 3985122 (1976-10-01), Topham
patent: 4057050 (1977-11-01), Sarstedt
patent: 4066067 (1978-01-01), Micheli
patent: 4180069 (1979-12-01), Walters
patent: 4268481 (1981-05-01), Suovaniemi et al.
patent: 4286640 (1981-09-01), Knox et al.

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