Medical fluid collection device

Details Medical fluid collection device Medical fluid collection device

1980-10-07

1983-02-01

Yasko, John D.

Surgery

Truss

Pad

128765, 128218PA, A61B 514

Patent

active

043709877

ABSTRACT:
A medical fluid collection system includes a double ended needle having a disc secured thereto. A resilient elastomeric sleeve is secured to the disc to extend around a portion of the needle, and a pierceable translucent plug is secured to the sleeve such that the plug is situated over one end of the needle in an extended position to prevent fluids from leaking therefrom. This plug is preferably provided with a convex outer surface adjacent the one end of the needle and is moveable along the needle to a retracted position in which the one end of the needle extends out of the plug. The sleeve acts to bias the plug into the extended position. A fluid collection device includes a barrel which defines a bore. A piston is slidingly and sealingly positioned in the bore, and a pierceable diaphragm is provided to seal an interior volume of the bore between the piston and the diaphragm. The diaphragm defines a recess shaped to receive and position the outer surface of the plug such that, when the plug is positioned in the recess and the barrel is urged toward the disc, the one end of the needle passes through the plug and the diaphragm into the interior volume of the barrel. In addition, a rod or cord is attached to the piston to extend outside of the barrel, and locking members are provided on the barrel to lock the rod or cord in position. The rod or cord and the locking members are used to develop a vacuum inside the barrel to aid in drawing fluids through the double ended needle.

REFERENCES:
patent: 3797487 (1974-03-01), Schmidt
patent: 3835835 (1974-09-01), Thompson et al.
patent: 3930492 (1976-01-01), Hatsuno et al.
patent: 4009716 (1977-03-01), Cohen
patent: 4011868 (1977-03-01), Friend
patent: 4192320 (1980-03-01), Megahed
patent: 4216782 (1980-08-01), Sarstedt

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