Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1984-03-09
1987-06-30
Kruter, J. L.
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
604 37, 604249, A61M 100
Patent
active
046767770
ABSTRACT:
An implement providing an irrigator/evacuator primarily intended for use in connection with urological surgery, includes a reservoir connected to one side of the barrel of a pump having an outlet opening at one end. A compressible bulb attached to the end of the barrel opposite the outlet opening can be utilized to displace fluid within the implement outwardly through the outlet opening for irrigation purposes, and subsequently to draw fluid into the implement for evacuation purposes. A free piston is housed within the pump so as to freely movable along the length of the barrel. Fluid drawn into the implement causes movement of the piston to a retracted position, allowing substantially unrestricted passage of pieces of tissue or other material into the reservoir. The outward displacement of fluid from the implement, on the other hand, causes movement of the piston toward the outlet end of the barrel, in which position the piston effectively prevents the expulsion of tissue and the like from the implement, without significantly restricting fluid flow.
REFERENCES:
patent: 1015895 (1912-01-01), Kelley
patent: 3003500 (1961-10-01), Barton et al.
patent: 3516443 (1970-06-01), Hughes
patent: 3519012 (1970-07-01), Van Patten
patent: 3780736 (1973-12-01), Chen
patent: 3892226 (1975-07-01), Rosen
patent: 4038983 (1977-08-01), Mittleman et al.
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