Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1984-01-03
1986-09-09
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604256, A61M 2500
Patent
active
046106650
ABSTRACT:
A medical instrument comprises a main body having a path formed therethrough, through which a tubular member is insertable or drawable. A valve body is provided in the path of the main body, maintaining at least a liquid-tight state with the rod-like member, when the path is opened by the rod-like member inserted through the path, and closing the path at least in the liquid-tight state, when the rod-like member is not inserted through the path. The valve body has two end faces. The valve body is formed with a first slit openable in one of the end faces and a second slit openable in the other of the end faces. The first slit and the second slit cross each other in the valve body.
In consequence, rod-like members being of widely varied outer diameters are inserted through the path of the main body and held therein in a liquid-tight state to thereby reliably prevent blood leakage. Also, blood flow-out when the rod-like member or members are abruptly withdrawn from the path of the main body is reliably prevented. Further, a single valve body is provided so that the construction of the medical instrument can be simplified.
REFERENCES:
patent: 3853127 (1974-12-01), Spademan
patent: 4000739 (1977-01-01), Stevens
patent: 4143853 (1979-03-01), Abramson
patent: 4177814 (1979-12-01), Knepshield
patent: 4412836 (1983-11-01), Brignola
patent: 4430081 (1984-01-01), Timmermans
patent: 4436519 (1984-03-01), O'Neill
patent: 4475548 (1984-10-01), Muto
patent: 4496348 (1985-01-01), Genese et al.
Matsumoto Atsushi
Suzuki Tatsuo
Pellegrino Stephen C.
Rooney Mark
Terumo Kabushiki Kaisha
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