US Patent 7347828 Suction adapter for medical instrument

A suction adapter for use with first and second medical devices capable of accommodating suction, the adapter including a manifold having at least three ports and a flexible flow valve. The ports may include: a suction port configured for connecting to a suction source; a first device port configured for accommodating a first medical device, preferably an endoscope; and a second device port configured for accommodating a second medical device, preferably a suction biopsy device. The flexible flow valve has at least one opening and may be located between the first device port and both the second device port and the suction port.