Blood withdrawal device with safety valve and cylindrical contai

Details Blood withdrawal device with safety valve and cylindrical contai Blood withdrawal device with safety valve and cylindrical contai

1986-11-12

1988-12-13

Hindenburg, Max

Surgery

Truss

Pad

604 52, 604414, A61R 500

Patent

active

047903309

ABSTRACT:
The novel safety blood withdrawal device includes as principal components a syringe body (SK) with a cannula holder, a collecting container (AB) which can be pressed into the syringe body, and a continuous tube (R).
The collecting container is present in the form of a hollow cylinder (11) with a forwardly fitted, fixed sealing plug (12) of elastic material and with an internally fitted sealing piston (13), which is movable relative to the piston inner wall.
The syringe body exhibits at its rear end gripping lugs (21) and at the end face (22) a cannula holder (23).
The continuous tube is mounted by means of a closing piece (31) in a closure block (32) to be movable in the direction of the longitudinal axis of the device, the closure block (32) being tightly secured at the front sealing surface (22) and creating a liquid-conducting connection between the interior space of the cannula and the interior cavity (33) of the closure block (32), and the closing piece (31) tightly fixed to the continuous tube, in the event of pressure on the tube in the direction of the tip of the device, creating a liquid-conducting connection between the interior space of the tube and the interior cavity (33), and, in the event of tension on the continuous tube, sealing this connection in a liquid-tight manner.
The novel device is used, advantageously as a set, for the withdrawal of blood from humans.

REFERENCES:
patent: 3159159 (1964-12-01), Cohen
patent: 3494352 (1970-02-01), Russo et al.
patent: 3659587 (1972-05-01), Baldwin
patent: 4166450 (1979-09-01), Abramson
patent: 4312362 (1982-01-01), Kaufman
patent: 4512766 (1985-04-01), Vailancourt

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