Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1982-05-20
1984-08-28
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
A61M 300
Patent
active
044682166
ABSTRACT:
An irrigation suction catheter comprises an elongated flexible outer tube having a proximal end connectable to a source of vacuum, a distal end having a suction inlet across the terminal tip and an aperture, near the proximal end opening to the atmosphere, but closable by the thumb or finger to close the suction circuit. Sleeved within the suction tube is an elongated flexible irrigation tube having a proximal end connectable to pressurized irrigation fluid, a distal end extending beyond the suction inlet, to form a projecting flexible tip with an irrigation discharge outlet at the terminus of the tip. A vortical circulation is set up by the irrigation outlet to guide dislodged debris into the suction inlet, when both suction and irrigation are applied simultaneously. The inner, flexible irrigation tube, with its projecting terminal tip may also be sleeved in the hollow bore of a fiber optic endoscope, or in a bronchoscope, gastroscope, colonoscope or other similar devices. The projecting distal end of the irrigation tube is easily bendable and free to move sidewise or axially within the annular suction inlet opening to dislodge particles and free the opening of plugging.
REFERENCES:
patent: 1884970 (1916-05-01), Larssen
patent: 1889425 (1932-11-01), Sorensen
patent: 2148541 (1939-02-01), Dierker
patent: 3766916 (1973-10-01), Moorehead et al.
patent: 4096860 (1978-06-01), McLaughlin
patent: 4294251 (1981-10-01), Greenwald et al.
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