Flexible cap and instrument seal for a suction control device in

Surgery – Truss – Perineal

Patent

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Details

128276, A61B 100

Patent

active

041989589

ABSTRACT:
A suction control device for an endoscope comprises an outer tube assembly having one end connected to the proximal end of the endoscope and an inner tube assembly coaxially inserted into the outer tube assembly. The inner tube assembly leads an elongated medical instrument therethrough to a channel in the endoscope. An air chamber is defined between the outer tube assembly and the inner tube assembly and communicates with the channel in the endoscope and with a suction pipe fixed to the outer tube. The proximal ends of the inner tube assembly and the outer tube assembly are covered with a flexible cap of a flexible material which is provided with an air inlet communicating with the inner tube assembly and another air inlet disposed near the first air inlet for communication with the air chamber such that both air inlets can be simultaneously blocked by a finger cushion. Provided in the inner tube assembly is a sealing member made of rubber having a central aperture with a diameter smaller than that of the medical instrument passing through it. The flexibility of the cap enables the finger to completely block the air inlets, and the close arrangement of the air inlets provides their simultaneously easy blocking by a single finger. Moreover, the sealing member assures a fluid tightness between the channel and the inner tube assembly.

REFERENCES:
patent: 3162195 (1964-12-01), Dick
patent: 3958566 (1976-05-01), Furihata
patent: 4013310 (1977-03-01), Dye

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