Hydrodynamic suction catheter

Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...

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604 35, 606159, A61M 300, A61M 100

Patent

active

054530881

ABSTRACT:
The drainage catheter comprises a basic tubular body having a distal end, a proximal end, a pressure channel in the tubular body and a discharge channel in the tubular body, the distal end having a bending of the pressure channel to communicate with the discharge channel. A nozzle ejector formation is provided in the distal end of the catheter after the bend in the pressure channel and having an orifice facing proximally into the discharge channel. The distal end further has an inlet opening disposed adjacent the orifice of the nozzle ejector formation. The basic tubular body has, at the proximal end, a pressure inlet to the pressure channel and a discharge outlet from the discharge channel. Coupling structure is coupled to the proximal end of the basic tubular body and includes a first, pressure channel for coupling a source of fluid under pressure to the pressure inlet at the proximal end of the catheter tubular body, a second, discharge channel for coupling the discharge outlet at the proximal end of the tubular body to a reservoir, and a third, curved channel for coupling, at the pressure inlet, the source of fluid under pressure to, at the discharge outlet, the reservoir, whereby fluid under pressure flowing through the third channel creates a suction at the discharge outlet to educe fluid from the discharge channel to the reservoir.

REFERENCES:
patent: 2568566 (1946-05-01), Sokolik
patent: 4715848 (1987-12-01), Beroza
patent: 4790818 (1988-12-01), De Luca
patent: 5037432 (1991-08-01), Molinari
patent: 5259842 (1993-11-01), Plechinger et al.
patent: 5318518 (1994-06-01), Plechinger et al.
patent: 5320599 (1994-06-01), Griep et al.

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