Pipe joints or couplings – Having plural independent paths – Parallel paths
Reexamination Certificate
2005-03-01
2005-03-01
Hewitt, James M. (Department: 3679)
Pipe joints or couplings
Having plural independent paths
Parallel paths
C285S120100, C600S121000, C600S123000, C600S153000, C600S156000, C600S158000
Reexamination Certificate
active
06860516
ABSTRACT:
A channel tube coupling structure for an anti-pollution type endoscope which can easily and smoothly couple a multi-lumen type channel tube extending from a base end of an outer sheath with tubes on a side of the endoscope and separate the multi-lumen type channel tube therefrom. At a side surface in a vicinity of the base end of the channel tube, side holes communicate with a plurality of tubes that are formed so as to be shifted from one another in an axial direction. A coupling hole, where the base end portion of the channel tube is loosely inserted thereinto and freely removed therefrom, provides a space in a radial direction between the channel tube and the coupling hole. Annular sealing members are provided which seal portions between the respective side holes, in a state where the base end portion of the channel tube is inserted into the coupling hole. Respective holes on the endoscope side are opened and coupled at the inner peripheral surface of the coupling hole at portions along the annular sealing members.
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English Language Translation for JP Appln. No. 3-017573.
Ouchi Teruo
Yamamoto Kazuyuki
Greenblum & Bernstein P.L.C.
Hewitt James M.
PENTAX Corporation
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